/src/xpdf-4.03/splash/Splash.cc
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1 | | //======================================================================== |
2 | | // |
3 | | // Splash.cc |
4 | | // |
5 | | // Copyright 2003-2020 Glyph & Cog, LLC |
6 | | // |
7 | | //======================================================================== |
8 | | |
9 | | #include <aconf.h> |
10 | | |
11 | | #ifdef USE_GCC_PRAGMAS |
12 | | #pragma implementation |
13 | | #endif |
14 | | |
15 | | #include <stdlib.h> |
16 | | #include <string.h> |
17 | | #include <limits.h> |
18 | | #include <math.h> |
19 | | #include "gmem.h" |
20 | | #include "gmempp.h" |
21 | | #include "GString.h" |
22 | | #include "SplashErrorCodes.h" |
23 | | #include "SplashMath.h" |
24 | | #include "SplashBitmap.h" |
25 | | #include "SplashState.h" |
26 | | #include "SplashPath.h" |
27 | | #include "SplashXPath.h" |
28 | | #include "SplashXPathScanner.h" |
29 | | #include "SplashPattern.h" |
30 | | #include "SplashScreen.h" |
31 | | #include "SplashFont.h" |
32 | | #include "SplashGlyphBitmap.h" |
33 | | #include "Splash.h" |
34 | | |
35 | | // the MSVC math.h doesn't define this |
36 | | #ifndef M_PI |
37 | | #define M_PI 3.14159265358979323846 |
38 | | #endif |
39 | | |
40 | | //------------------------------------------------------------------------ |
41 | | |
42 | | // distance of Bezier control point from center for circle approximation |
43 | | // = (4 * (sqrt(2) - 1) / 3) * r |
44 | 0 | #define bezierCircle ((SplashCoord)0.55228475) |
45 | 0 | #define bezierCircle2 ((SplashCoord)(0.5 * 0.55228475)) |
46 | | |
47 | | // Divide a 16-bit value (in [0, 255*255]) by 255, returning an 8-bit result. |
48 | 0 | static inline Guchar div255(int x) { |
49 | 0 | return (Guchar)((x + (x >> 8) + 0x80) >> 8); |
50 | 0 | } |
51 | | |
52 | | // Clip x to lie in [0, 255]. |
53 | 0 | static inline Guchar clip255(int x) { |
54 | 0 | return x < 0 ? 0 : x > 255 ? 255 : (Guchar)x; |
55 | 0 | } |
56 | | |
57 | | // Used by drawImage and fillImageMask to divide the target |
58 | | // quadrilateral into sections. |
59 | | struct ImageSection { |
60 | | int y0, y1; // actual y range |
61 | | int ia0, ia1; // vertex indices for edge A |
62 | | int ib0, ib1; // vertex indices for edge B |
63 | | SplashCoord xa0, ya0, xa1, ya1; // edge A |
64 | | SplashCoord dxdya; // slope of edge A |
65 | | SplashCoord xb0, yb0, xb1, yb1; // edge B |
66 | | SplashCoord dxdyb; // slope of edge B |
67 | | }; |
68 | | |
69 | | //------------------------------------------------------------------------ |
70 | | // SplashPipe |
71 | | //------------------------------------------------------------------------ |
72 | | |
73 | | #define splashPipeMaxStages 9 |
74 | | |
75 | | struct SplashPipe { |
76 | | // source pattern |
77 | | SplashPattern *pattern; |
78 | | |
79 | | // source alpha and color |
80 | | Guchar aInput; |
81 | | SplashColor cSrcVal; |
82 | | |
83 | | // source overprint mask |
84 | | //~ this is a kludge - this pointer should be passed as an arg to the |
85 | | //~ pipeRun function, but that would require passing in a lot of |
86 | | //~ null pointers, since it's rarely used |
87 | | Guint *srcOverprintMaskPtr; |
88 | | |
89 | | // special cases and result color |
90 | | GBool noTransparency; |
91 | | GBool shapeOnly; |
92 | | SplashPipeResultColorCtrl resultColorCtrl; |
93 | | |
94 | | // non-isolated group correction |
95 | | // (this is only used when Splash::composite() is called to composite |
96 | | // a non-isolated group onto the backdrop) |
97 | | GBool nonIsolatedGroup; |
98 | | |
99 | | // the "run" function |
100 | | void (Splash::*run)(SplashPipe *pipe, int x0, int x1, int y, |
101 | | Guchar *shapePtr, SplashColorPtr cSrcPtr); |
102 | | }; |
103 | | |
104 | | SplashPipeResultColorCtrl Splash::pipeResultColorNoAlphaBlend[] = { |
105 | | splashPipeResultColorNoAlphaBlendMono, |
106 | | splashPipeResultColorNoAlphaBlendMono, |
107 | | splashPipeResultColorNoAlphaBlendRGB, |
108 | | splashPipeResultColorNoAlphaBlendRGB |
109 | | #if SPLASH_CMYK |
110 | | , |
111 | | splashPipeResultColorNoAlphaBlendCMYK |
112 | | #endif |
113 | | }; |
114 | | |
115 | | SplashPipeResultColorCtrl Splash::pipeResultColorAlphaNoBlend[] = { |
116 | | splashPipeResultColorAlphaNoBlendMono, |
117 | | splashPipeResultColorAlphaNoBlendMono, |
118 | | splashPipeResultColorAlphaNoBlendRGB, |
119 | | splashPipeResultColorAlphaNoBlendRGB |
120 | | #if SPLASH_CMYK |
121 | | , |
122 | | splashPipeResultColorAlphaNoBlendCMYK |
123 | | #endif |
124 | | }; |
125 | | |
126 | | SplashPipeResultColorCtrl Splash::pipeResultColorAlphaBlend[] = { |
127 | | splashPipeResultColorAlphaBlendMono, |
128 | | splashPipeResultColorAlphaBlendMono, |
129 | | splashPipeResultColorAlphaBlendRGB, |
130 | | splashPipeResultColorAlphaBlendRGB |
131 | | #if SPLASH_CMYK |
132 | | , |
133 | | splashPipeResultColorAlphaBlendCMYK |
134 | | #endif |
135 | | }; |
136 | | |
137 | | //------------------------------------------------------------------------ |
138 | | // modified region |
139 | | //------------------------------------------------------------------------ |
140 | | |
141 | 0 | void Splash::clearModRegion() { |
142 | 0 | modXMin = bitmap->width; |
143 | 0 | modYMin = bitmap->height; |
144 | 0 | modXMax = -1; |
145 | 0 | modYMax = -1; |
146 | 0 | } |
147 | | |
148 | 0 | inline void Splash::updateModX(int x) { |
149 | 0 | if (x < modXMin) { |
150 | 0 | modXMin = x; |
151 | 0 | } |
152 | 0 | if (x > modXMax) { |
153 | 0 | modXMax = x; |
154 | 0 | } |
155 | 0 | } |
156 | | |
157 | 0 | inline void Splash::updateModY(int y) { |
158 | 0 | if (y < modYMin) { |
159 | 0 | modYMin = y; |
160 | 0 | } |
161 | 0 | if (y > modYMax) { |
162 | 0 | modYMax = y; |
163 | 0 | } |
164 | 0 | } |
165 | | |
166 | | //------------------------------------------------------------------------ |
167 | | // pipeline |
168 | | //------------------------------------------------------------------------ |
169 | | |
170 | | inline void Splash::pipeInit(SplashPipe *pipe, SplashPattern *pattern, |
171 | | Guchar aInput, GBool usesShape, |
172 | 0 | GBool nonIsolatedGroup, GBool usesSrcOverprint) { |
173 | 0 | SplashColorMode mode; |
174 | |
|
175 | 0 | mode = bitmap->mode; |
176 | |
|
177 | 0 | pipe->pattern = NULL; |
178 | | |
179 | | // source color |
180 | 0 | if (pattern && pattern->isStatic()) { |
181 | 0 | pattern->getColor(0, 0, pipe->cSrcVal); |
182 | 0 | pipe->pattern = NULL; |
183 | 0 | } else { |
184 | 0 | pipe->pattern = pattern; |
185 | 0 | } |
186 | | |
187 | | // source alpha |
188 | 0 | pipe->aInput = aInput; |
189 | | |
190 | | // source overprint mask |
191 | 0 | pipe->srcOverprintMaskPtr = NULL; |
192 | | |
193 | | // special cases |
194 | 0 | pipe->noTransparency = aInput == 255 && |
195 | 0 | !state->softMask && |
196 | 0 | !usesShape && |
197 | 0 | !state->inNonIsolatedGroup && |
198 | 0 | !state->inKnockoutGroup && |
199 | 0 | !nonIsolatedGroup && |
200 | 0 | state->overprintMask == 0xffffffff; |
201 | 0 | pipe->shapeOnly = aInput == 255 && |
202 | 0 | !state->softMask && |
203 | 0 | usesShape && |
204 | 0 | !state->inNonIsolatedGroup && |
205 | 0 | !state->inKnockoutGroup && |
206 | 0 | !nonIsolatedGroup && |
207 | 0 | state->overprintMask == 0xffffffff; |
208 | | |
209 | | // result color |
210 | 0 | if (pipe->noTransparency) { |
211 | | // the !state->blendFunc case is handled separately in pipeRun |
212 | 0 | pipe->resultColorCtrl = pipeResultColorNoAlphaBlend[mode]; |
213 | 0 | } else if (!state->blendFunc) { |
214 | 0 | pipe->resultColorCtrl = pipeResultColorAlphaNoBlend[mode]; |
215 | 0 | } else { |
216 | 0 | pipe->resultColorCtrl = pipeResultColorAlphaBlend[mode]; |
217 | 0 | } |
218 | | |
219 | | // non-isolated group correction |
220 | 0 | pipe->nonIsolatedGroup = nonIsolatedGroup; |
221 | | |
222 | | // select the 'run' function |
223 | 0 | pipe->run = &Splash::pipeRun; |
224 | 0 | if (overprintMaskBitmap || usesSrcOverprint) { |
225 | | // use Splash::pipeRun |
226 | 0 | } else if (!pipe->pattern && pipe->noTransparency && !state->blendFunc) { |
227 | 0 | if (mode == splashModeMono1 && !bitmap->alpha) { |
228 | 0 | pipe->run = &Splash::pipeRunSimpleMono1; |
229 | 0 | } else if (mode == splashModeMono8 && bitmap->alpha) { |
230 | 0 | pipe->run = &Splash::pipeRunSimpleMono8; |
231 | 0 | } else if (mode == splashModeRGB8 && bitmap->alpha) { |
232 | 0 | pipe->run = &Splash::pipeRunSimpleRGB8; |
233 | 0 | } else if (mode == splashModeBGR8 && bitmap->alpha) { |
234 | 0 | pipe->run = &Splash::pipeRunSimpleBGR8; |
235 | 0 | #if SPLASH_CMYK |
236 | 0 | } else if (mode == splashModeCMYK8 && bitmap->alpha) { |
237 | 0 | pipe->run = &Splash::pipeRunSimpleCMYK8; |
238 | 0 | #endif |
239 | 0 | } |
240 | 0 | } else if (!pipe->pattern && pipe->shapeOnly && !state->blendFunc) { |
241 | 0 | if (mode == splashModeMono1 && !bitmap->alpha) { |
242 | 0 | pipe->run = &Splash::pipeRunShapeMono1; |
243 | 0 | } else if (mode == splashModeMono8 && bitmap->alpha) { |
244 | 0 | pipe->run = &Splash::pipeRunShapeMono8; |
245 | 0 | } else if (mode == splashModeRGB8 && bitmap->alpha) { |
246 | 0 | pipe->run = &Splash::pipeRunShapeRGB8; |
247 | 0 | } else if (mode == splashModeBGR8 && bitmap->alpha) { |
248 | 0 | pipe->run = &Splash::pipeRunShapeBGR8; |
249 | 0 | #if SPLASH_CMYK |
250 | 0 | } else if (mode == splashModeCMYK8 && bitmap->alpha) { |
251 | 0 | pipe->run = &Splash::pipeRunShapeCMYK8; |
252 | 0 | #endif |
253 | 0 | } else if (mode == splashModeMono8 && !bitmap->alpha) { |
254 | | // this is used when drawing soft-masked images |
255 | 0 | pipe->run = &Splash::pipeRunShapeNoAlphaMono8; |
256 | 0 | } |
257 | 0 | } else if (!pipe->pattern && !pipe->noTransparency && !state->softMask && |
258 | 0 | usesShape && |
259 | 0 | !(state->inNonIsolatedGroup && groupBackBitmap->alpha) && |
260 | 0 | !state->inKnockoutGroup && |
261 | 0 | !state->blendFunc && !pipe->nonIsolatedGroup) { |
262 | 0 | if (mode == splashModeMono1 && !bitmap->alpha) { |
263 | 0 | pipe->run = &Splash::pipeRunAAMono1; |
264 | 0 | } else if (mode == splashModeMono8 && bitmap->alpha) { |
265 | 0 | pipe->run = &Splash::pipeRunAAMono8; |
266 | 0 | } else if (mode == splashModeRGB8 && bitmap->alpha) { |
267 | 0 | pipe->run = &Splash::pipeRunAARGB8; |
268 | 0 | } else if (mode == splashModeBGR8 && bitmap->alpha) { |
269 | 0 | pipe->run = &Splash::pipeRunAABGR8; |
270 | 0 | #if SPLASH_CMYK |
271 | 0 | } else if (mode == splashModeCMYK8 && bitmap->alpha) { |
272 | 0 | pipe->run = &Splash::pipeRunAACMYK8; |
273 | 0 | #endif |
274 | 0 | } |
275 | 0 | } else if (!pipe->pattern && |
276 | 0 | aInput == 255 && |
277 | 0 | state->softMask && |
278 | 0 | usesShape && |
279 | 0 | !state->inNonIsolatedGroup && |
280 | 0 | !state->inKnockoutGroup && |
281 | 0 | !nonIsolatedGroup && |
282 | 0 | state->overprintMask == 0xffffffff && |
283 | 0 | !state->blendFunc) { |
284 | 0 | if (mode == splashModeMono8 && bitmap->alpha) { |
285 | 0 | pipe->run = &Splash::pipeRunSoftMaskMono8; |
286 | 0 | } else if (mode == splashModeRGB8 && bitmap->alpha) { |
287 | 0 | pipe->run = &Splash::pipeRunSoftMaskRGB8; |
288 | 0 | } else if (mode == splashModeBGR8 && bitmap->alpha) { |
289 | 0 | pipe->run = &Splash::pipeRunSoftMaskBGR8; |
290 | 0 | #if SPLASH_CMYK |
291 | 0 | } else if (mode == splashModeCMYK8 && bitmap->alpha) { |
292 | 0 | pipe->run = &Splash::pipeRunSoftMaskCMYK8; |
293 | 0 | #endif |
294 | 0 | } |
295 | 0 | } else if (!pipe->pattern && !pipe->noTransparency && !state->softMask && |
296 | 0 | usesShape && |
297 | 0 | state->inNonIsolatedGroup && groupBackBitmap->alpha && |
298 | 0 | !state->inKnockoutGroup && |
299 | 0 | !state->blendFunc && !pipe->nonIsolatedGroup) { |
300 | 0 | if (mode == splashModeMono8 && bitmap->alpha) { |
301 | 0 | pipe->run = &Splash::pipeRunNonIsoMono8; |
302 | 0 | } else if (mode == splashModeRGB8 && bitmap->alpha) { |
303 | 0 | pipe->run = &Splash::pipeRunNonIsoRGB8; |
304 | 0 | } else if (mode == splashModeBGR8 && bitmap->alpha) { |
305 | 0 | pipe->run = &Splash::pipeRunNonIsoBGR8; |
306 | 0 | #if SPLASH_CMYK |
307 | 0 | } else if (mode == splashModeCMYK8 && bitmap->alpha) { |
308 | 0 | pipe->run = &Splash::pipeRunNonIsoCMYK8; |
309 | 0 | #endif |
310 | 0 | } |
311 | 0 | } |
312 | 0 | } |
313 | | |
314 | | // general case |
315 | | void Splash::pipeRun(SplashPipe *pipe, int x0, int x1, int y, |
316 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
317 | 0 | Guchar *shapePtr2; |
318 | 0 | Guchar shape, aSrc, aDest, alphaI, alphaIm1, alpha0, aResult; |
319 | 0 | SplashColor cSrc, cDest, cBlend; |
320 | 0 | Guchar shapeVal, cResult0, cResult1, cResult2, cResult3; |
321 | 0 | int cSrcStride, shapeStride, x, lastX, t; |
322 | 0 | SplashColorPtr destColorPtr; |
323 | 0 | Guchar destColorMask; |
324 | 0 | Guchar *destAlphaPtr; |
325 | 0 | SplashColorPtr color0Ptr; |
326 | 0 | Guchar color0Mask; |
327 | 0 | Guchar *alpha0Ptr; |
328 | 0 | SplashColorPtr softMaskPtr; |
329 | 0 | Guint overprintMask; |
330 | 0 | Guint *overprintMaskPtr; |
331 | 0 | #if SPLASH_CMYK |
332 | 0 | Guchar aPrev; |
333 | 0 | SplashColor cSrc2, cDest2; |
334 | 0 | #endif |
335 | |
|
336 | 0 | if (cSrcPtr && !pipe->pattern) { |
337 | 0 | cSrcStride = bitmapComps; |
338 | 0 | } else { |
339 | 0 | cSrcPtr = pipe->cSrcVal; |
340 | 0 | cSrcStride = 0; |
341 | 0 | } |
342 | |
|
343 | 0 | if (shapePtr) { |
344 | 0 | shapePtr2 = shapePtr; |
345 | 0 | shapeStride = 1; |
346 | 0 | for (; x0 <= x1; ++x0) { |
347 | 0 | if (*shapePtr2) { |
348 | 0 | break; |
349 | 0 | } |
350 | 0 | cSrcPtr += cSrcStride; |
351 | 0 | ++shapePtr2; |
352 | 0 | if (pipe->srcOverprintMaskPtr) { |
353 | 0 | ++pipe->srcOverprintMaskPtr; |
354 | 0 | } |
355 | 0 | } |
356 | 0 | } else { |
357 | 0 | shapeVal = 0xff; |
358 | 0 | shapePtr2 = &shapeVal; |
359 | 0 | shapeStride = 0; |
360 | 0 | } |
361 | 0 | if (x0 > x1) { |
362 | 0 | return; |
363 | 0 | } |
364 | 0 | updateModX(x0); |
365 | 0 | updateModY(y); |
366 | 0 | lastX = x0; |
367 | |
|
368 | 0 | useDestRow(y); |
369 | |
|
370 | 0 | if (bitmap->mode == splashModeMono1) { |
371 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; |
372 | 0 | destColorMask = (Guchar)(0x80 >> (x0 & 7)); |
373 | 0 | } else { |
374 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * bitmapComps]; |
375 | 0 | destColorMask = 0; // make gcc happy |
376 | 0 | } |
377 | 0 | if (bitmap->alpha) { |
378 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
379 | 0 | } else { |
380 | 0 | destAlphaPtr = NULL; |
381 | 0 | } |
382 | 0 | if (state->softMask) { |
383 | 0 | softMaskPtr = &state->softMask->data[y * state->softMask->rowSize + x0]; |
384 | 0 | } else { |
385 | 0 | softMaskPtr = NULL; |
386 | 0 | } |
387 | 0 | if (state->inKnockoutGroup) { |
388 | 0 | if (bitmap->mode == splashModeMono1) { |
389 | 0 | color0Ptr = |
390 | 0 | &groupBackBitmap->data[(groupBackY + y) * groupBackBitmap->rowSize + |
391 | 0 | ((groupBackX + x0) >> 3)]; |
392 | 0 | color0Mask = (Guchar)(0x80 >> ((groupBackX + x0) & 7)); |
393 | 0 | } else { |
394 | 0 | color0Ptr = |
395 | 0 | &groupBackBitmap->data[(groupBackY + y) * groupBackBitmap->rowSize + |
396 | 0 | (groupBackX + x0) * bitmapComps]; |
397 | 0 | color0Mask = 0; // make gcc happy |
398 | 0 | } |
399 | 0 | } else { |
400 | 0 | color0Ptr = NULL; |
401 | 0 | color0Mask = 0; // make gcc happy |
402 | 0 | } |
403 | 0 | if (state->inNonIsolatedGroup && groupBackBitmap->alpha) { |
404 | 0 | alpha0Ptr = |
405 | 0 | &groupBackBitmap->alpha[(groupBackY + y) |
406 | 0 | * groupBackBitmap->alphaRowSize + |
407 | 0 | (groupBackX + x0)]; |
408 | 0 | } else { |
409 | 0 | alpha0Ptr = NULL; |
410 | 0 | } |
411 | 0 | if (overprintMaskBitmap) { |
412 | 0 | overprintMaskPtr = overprintMaskBitmap + y * bitmap->width + x0; |
413 | 0 | } else { |
414 | 0 | overprintMaskPtr = NULL; |
415 | 0 | } |
416 | |
|
417 | 0 | for (x = x0; x <= x1; ++x) { |
418 | | |
419 | | //----- shape |
420 | |
|
421 | 0 | shape = *shapePtr2; |
422 | 0 | if (!shape) { |
423 | 0 | if (bitmap->mode == splashModeMono1) { |
424 | 0 | destColorPtr += destColorMask & 1; |
425 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
426 | 0 | } else { |
427 | 0 | destColorPtr += bitmapComps; |
428 | 0 | } |
429 | 0 | if (destAlphaPtr) { |
430 | 0 | ++destAlphaPtr; |
431 | 0 | } |
432 | 0 | if (softMaskPtr) { |
433 | 0 | ++softMaskPtr; |
434 | 0 | } |
435 | 0 | if (color0Ptr) { |
436 | 0 | if (bitmap->mode == splashModeMono1) { |
437 | 0 | color0Ptr += color0Mask & 1; |
438 | 0 | color0Mask = (Guchar)((color0Mask << 7) | (color0Mask >> 1)); |
439 | 0 | } else { |
440 | 0 | color0Ptr += bitmapComps; |
441 | 0 | } |
442 | 0 | } |
443 | 0 | if (alpha0Ptr) { |
444 | 0 | ++alpha0Ptr; |
445 | 0 | } |
446 | 0 | cSrcPtr += cSrcStride; |
447 | 0 | shapePtr2 += shapeStride; |
448 | 0 | if (pipe->srcOverprintMaskPtr) { |
449 | 0 | ++pipe->srcOverprintMaskPtr; |
450 | 0 | } |
451 | 0 | if (overprintMaskPtr) { |
452 | 0 | ++overprintMaskPtr; |
453 | 0 | } |
454 | 0 | continue; |
455 | 0 | } |
456 | 0 | lastX = x; |
457 | | |
458 | | //----- source color |
459 | | |
460 | | // static pattern: handled in pipeInit |
461 | | // fixed color: handled in pipeInit |
462 | | |
463 | | // dynamic pattern |
464 | 0 | if (pipe->pattern) { |
465 | 0 | pipe->pattern->getColor(x, y, pipe->cSrcVal); |
466 | 0 | } |
467 | |
|
468 | 0 | cResult0 = cResult1 = cResult2 = cResult3 = 0; // make gcc happy |
469 | |
|
470 | 0 | if (pipe->noTransparency && !state->blendFunc) { |
471 | | |
472 | | //----- result color |
473 | |
|
474 | 0 | switch (bitmap->mode) { |
475 | 0 | case splashModeMono1: |
476 | 0 | case splashModeMono8: |
477 | 0 | cResult0 = state->grayTransfer[cSrcPtr[0]]; |
478 | 0 | break; |
479 | 0 | case splashModeRGB8: |
480 | 0 | case splashModeBGR8: |
481 | 0 | cResult0 = state->rgbTransferR[cSrcPtr[0]]; |
482 | 0 | cResult1 = state->rgbTransferG[cSrcPtr[1]]; |
483 | 0 | cResult2 = state->rgbTransferB[cSrcPtr[2]]; |
484 | 0 | break; |
485 | 0 | #if SPLASH_CMYK |
486 | 0 | case splashModeCMYK8: |
487 | 0 | cResult0 = state->cmykTransferC[cSrcPtr[0]]; |
488 | 0 | cResult1 = state->cmykTransferM[cSrcPtr[1]]; |
489 | 0 | cResult2 = state->cmykTransferY[cSrcPtr[2]]; |
490 | 0 | cResult3 = state->cmykTransferK[cSrcPtr[3]]; |
491 | 0 | break; |
492 | 0 | #endif |
493 | 0 | } |
494 | 0 | aResult = 255; |
495 | |
|
496 | 0 | } else { // if (noTransparency && !blendFunc) |
497 | | |
498 | | //----- read destination pixel |
499 | | // (or backdrop color, for knockout groups) |
500 | |
|
501 | 0 | if (color0Ptr) { |
502 | |
|
503 | 0 | switch (bitmap->mode) { |
504 | 0 | case splashModeMono1: |
505 | 0 | cDest[0] = (*color0Ptr & color0Mask) ? 0xff : 0x00; |
506 | 0 | color0Ptr += color0Mask & 1; |
507 | 0 | color0Mask = (Guchar)((color0Mask << 7) | (color0Mask >> 1)); |
508 | 0 | break; |
509 | 0 | case splashModeMono8: |
510 | 0 | cDest[0] = *color0Ptr++; |
511 | 0 | break; |
512 | 0 | case splashModeRGB8: |
513 | 0 | cDest[0] = color0Ptr[0]; |
514 | 0 | cDest[1] = color0Ptr[1]; |
515 | 0 | cDest[2] = color0Ptr[2]; |
516 | 0 | color0Ptr += 3; |
517 | 0 | break; |
518 | 0 | case splashModeBGR8: |
519 | 0 | cDest[2] = color0Ptr[0]; |
520 | 0 | cDest[1] = color0Ptr[1]; |
521 | 0 | cDest[0] = color0Ptr[2]; |
522 | 0 | color0Ptr += 3; |
523 | 0 | break; |
524 | 0 | #if SPLASH_CMYK |
525 | 0 | case splashModeCMYK8: |
526 | 0 | cDest[0] = color0Ptr[0]; |
527 | 0 | cDest[1] = color0Ptr[1]; |
528 | 0 | cDest[2] = color0Ptr[2]; |
529 | 0 | cDest[3] = color0Ptr[3]; |
530 | 0 | color0Ptr += 4; |
531 | 0 | break; |
532 | 0 | #endif |
533 | 0 | } |
534 | |
|
535 | 0 | } else { |
536 | |
|
537 | 0 | switch (bitmap->mode) { |
538 | 0 | case splashModeMono1: |
539 | 0 | cDest[0] = (*destColorPtr & destColorMask) ? 0xff : 0x00; |
540 | 0 | break; |
541 | 0 | case splashModeMono8: |
542 | 0 | cDest[0] = *destColorPtr; |
543 | 0 | break; |
544 | 0 | case splashModeRGB8: |
545 | 0 | cDest[0] = destColorPtr[0]; |
546 | 0 | cDest[1] = destColorPtr[1]; |
547 | 0 | cDest[2] = destColorPtr[2]; |
548 | 0 | break; |
549 | 0 | case splashModeBGR8: |
550 | 0 | cDest[0] = destColorPtr[2]; |
551 | 0 | cDest[1] = destColorPtr[1]; |
552 | 0 | cDest[2] = destColorPtr[0]; |
553 | 0 | break; |
554 | 0 | #if SPLASH_CMYK |
555 | 0 | case splashModeCMYK8: |
556 | 0 | cDest[0] = destColorPtr[0]; |
557 | 0 | cDest[1] = destColorPtr[1]; |
558 | 0 | cDest[2] = destColorPtr[2]; |
559 | 0 | cDest[3] = destColorPtr[3]; |
560 | 0 | break; |
561 | 0 | #endif |
562 | 0 | } |
563 | |
|
564 | 0 | } |
565 | | |
566 | 0 | if (destAlphaPtr) { |
567 | 0 | aDest = *destAlphaPtr; |
568 | 0 | } else { |
569 | 0 | aDest = 0xff; |
570 | 0 | } |
571 | | |
572 | | //----- read source color; handle overprint |
573 | |
|
574 | 0 | if (pipe->srcOverprintMaskPtr) { |
575 | 0 | overprintMask = *pipe->srcOverprintMaskPtr++; |
576 | 0 | } else { |
577 | 0 | overprintMask = state->overprintMask; |
578 | 0 | } |
579 | 0 | if (overprintMaskPtr) { |
580 | 0 | *overprintMaskPtr++ |= overprintMask; |
581 | 0 | } |
582 | |
|
583 | 0 | switch (bitmap->mode) { |
584 | 0 | case splashModeMono1: |
585 | 0 | case splashModeMono8: |
586 | 0 | cSrc[0] = state->grayTransfer[cSrcPtr[0]]; |
587 | 0 | break; |
588 | 0 | case splashModeRGB8: |
589 | 0 | case splashModeBGR8: |
590 | 0 | cSrc[0] = state->rgbTransferR[cSrcPtr[0]]; |
591 | 0 | cSrc[1] = state->rgbTransferG[cSrcPtr[1]]; |
592 | 0 | cSrc[2] = state->rgbTransferB[cSrcPtr[2]]; |
593 | 0 | break; |
594 | 0 | #if SPLASH_CMYK |
595 | 0 | case splashModeCMYK8: |
596 | 0 | if (alpha0Ptr) { // non-isolated group |
597 | 0 | if (color0Ptr) { // non-isolated, knockout group |
598 | 0 | aPrev = *alpha0Ptr; |
599 | 0 | } else { // non-isolated, non-knockout group |
600 | 0 | aPrev = (Guchar)(*alpha0Ptr + aDest - div255(*alpha0Ptr * aDest)); |
601 | 0 | } |
602 | 0 | } else { // isolated group |
603 | 0 | if (color0Ptr) { // isolated, knockout group |
604 | 0 | aPrev = 0; |
605 | 0 | } else { // isolated, non-knockout group |
606 | 0 | aPrev = aDest; |
607 | 0 | } |
608 | 0 | } |
609 | 0 | if (overprintMask & 0x01) { |
610 | 0 | cSrc[0] = state->cmykTransferC[cSrcPtr[0]]; |
611 | 0 | } else { |
612 | 0 | cSrc[0] = div255(aPrev * cDest[0]); |
613 | 0 | } |
614 | 0 | if (overprintMask & 0x02) { |
615 | 0 | cSrc[1] = state->cmykTransferM[cSrcPtr[1]]; |
616 | 0 | } else { |
617 | 0 | cSrc[1] = div255(aPrev * cDest[1]); |
618 | 0 | } |
619 | 0 | if (overprintMask & 0x04) { |
620 | 0 | cSrc[2] = state->cmykTransferY[cSrcPtr[2]]; |
621 | 0 | } else { |
622 | 0 | cSrc[2] = div255(aPrev * cDest[2]); |
623 | 0 | } |
624 | 0 | if (overprintMask & 0x08) { |
625 | 0 | cSrc[3] = state->cmykTransferK[cSrcPtr[3]]; |
626 | 0 | } else { |
627 | 0 | cSrc[3] = div255(aPrev * cDest[3]); |
628 | 0 | } |
629 | 0 | break; |
630 | 0 | #endif |
631 | 0 | } |
632 | | |
633 | | //----- source alpha |
634 | | |
635 | 0 | if (softMaskPtr) { |
636 | 0 | if (shapePtr) { |
637 | 0 | aSrc = div255(div255(pipe->aInput * *softMaskPtr++) * shape); |
638 | 0 | } else { |
639 | 0 | aSrc = div255(pipe->aInput * *softMaskPtr++); |
640 | 0 | } |
641 | 0 | } else if (shapePtr) { |
642 | 0 | aSrc = div255(pipe->aInput * shape); |
643 | 0 | } else { |
644 | 0 | aSrc = pipe->aInput; |
645 | 0 | } |
646 | | |
647 | | //----- non-isolated group correction |
648 | |
|
649 | 0 | if (pipe->nonIsolatedGroup) { |
650 | | // This path is only used when Splash::composite() is called to |
651 | | // composite a non-isolated group onto the backdrop. In this |
652 | | // case, shape is the source (group) alpha. |
653 | 0 | t = (aDest * 255) / shape - aDest; |
654 | 0 | switch (bitmap->mode) { |
655 | 0 | #if SPLASH_CMYK |
656 | 0 | case splashModeCMYK8: |
657 | 0 | cSrc[3] = clip255(cSrc[3] + ((cSrc[3] - cDest[3]) * t) / 255); |
658 | 0 | #endif |
659 | 0 | case splashModeRGB8: |
660 | 0 | case splashModeBGR8: |
661 | 0 | cSrc[2] = clip255(cSrc[2] + ((cSrc[2] - cDest[2]) * t) / 255); |
662 | 0 | cSrc[1] = clip255(cSrc[1] + ((cSrc[1] - cDest[1]) * t) / 255); |
663 | 0 | case splashModeMono1: |
664 | 0 | case splashModeMono8: |
665 | 0 | cSrc[0] = clip255(cSrc[0] + ((cSrc[0] - cDest[0]) * t) / 255); |
666 | 0 | break; |
667 | 0 | } |
668 | 0 | } |
669 | | |
670 | | //----- blend function |
671 | | |
672 | 0 | if (state->blendFunc) { |
673 | 0 | #if SPLASH_CMYK |
674 | 0 | if (bitmap->mode == splashModeCMYK8) { |
675 | | // convert colors to additive |
676 | 0 | cSrc2[0] = (Guchar)(0xff - cSrc[0]); |
677 | 0 | cSrc2[1] = (Guchar)(0xff - cSrc[1]); |
678 | 0 | cSrc2[2] = (Guchar)(0xff - cSrc[2]); |
679 | 0 | cSrc2[3] = (Guchar)(0xff - cSrc[3]); |
680 | 0 | cDest2[0] = (Guchar)(0xff - cDest[0]); |
681 | 0 | cDest2[1] = (Guchar)(0xff - cDest[1]); |
682 | 0 | cDest2[2] = (Guchar)(0xff - cDest[2]); |
683 | 0 | cDest2[3] = (Guchar)(0xff - cDest[3]); |
684 | 0 | (*state->blendFunc)(cSrc2, cDest2, cBlend, bitmap->mode); |
685 | | // convert result back to subtractive |
686 | 0 | cBlend[0] = (Guchar)(0xff - cBlend[0]); |
687 | 0 | cBlend[1] = (Guchar)(0xff - cBlend[1]); |
688 | 0 | cBlend[2] = (Guchar)(0xff - cBlend[2]); |
689 | 0 | cBlend[3] = (Guchar)(0xff - cBlend[3]); |
690 | 0 | } else |
691 | 0 | #endif |
692 | 0 | (*state->blendFunc)(cSrc, cDest, cBlend, bitmap->mode); |
693 | 0 | } |
694 | | |
695 | | //----- result alpha and non-isolated group element correction |
696 | | |
697 | | // alphaI = alpha_i |
698 | | // alphaIm1 = alpha_(i-1) |
699 | |
|
700 | 0 | if (pipe->noTransparency) { |
701 | 0 | alphaI = alphaIm1 = aResult = 255; |
702 | 0 | } else if (alpha0Ptr) { |
703 | 0 | if (color0Ptr) { |
704 | | // non-isolated, knockout |
705 | 0 | aResult = aSrc; |
706 | 0 | alpha0 = *alpha0Ptr++; |
707 | 0 | alphaI = (Guchar)(aSrc + alpha0 - div255(aSrc * alpha0)); |
708 | 0 | alphaIm1 = alpha0; |
709 | 0 | } else { |
710 | | // non-isolated, non-knockout |
711 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
712 | 0 | alpha0 = *alpha0Ptr++; |
713 | 0 | alphaI = (Guchar)(aResult + alpha0 - div255(aResult * alpha0)); |
714 | 0 | alphaIm1 = (Guchar)(alpha0 + aDest - div255(alpha0 * aDest)); |
715 | 0 | } |
716 | 0 | } else { |
717 | 0 | if (color0Ptr) { |
718 | | // isolated, knockout |
719 | 0 | aResult = aSrc; |
720 | 0 | alphaI = aSrc; |
721 | 0 | alphaIm1 = 0; |
722 | 0 | } else { |
723 | | // isolated, non-knockout |
724 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
725 | 0 | alphaI = aResult; |
726 | 0 | alphaIm1 = aDest; |
727 | 0 | } |
728 | 0 | } |
729 | | |
730 | | //----- result color |
731 | |
|
732 | 0 | switch (pipe->resultColorCtrl) { |
733 | | |
734 | 0 | case splashPipeResultColorNoAlphaBlendMono: |
735 | 0 | cResult0 = div255((255 - aDest) * cSrc[0] + aDest * cBlend[0]); |
736 | 0 | break; |
737 | 0 | case splashPipeResultColorNoAlphaBlendRGB: |
738 | 0 | cResult0 = div255((255 - aDest) * cSrc[0] + aDest * cBlend[0]); |
739 | 0 | cResult1 = div255((255 - aDest) * cSrc[1] + aDest * cBlend[1]); |
740 | 0 | cResult2 = div255((255 - aDest) * cSrc[2] + aDest * cBlend[2]); |
741 | 0 | break; |
742 | 0 | #if SPLASH_CMYK |
743 | 0 | case splashPipeResultColorNoAlphaBlendCMYK: |
744 | 0 | cResult0 = div255((255 - aDest) * cSrc[0] + aDest * cBlend[0]); |
745 | 0 | cResult1 = div255((255 - aDest) * cSrc[1] + aDest * cBlend[1]); |
746 | 0 | cResult2 = div255((255 - aDest) * cSrc[2] + aDest * cBlend[2]); |
747 | 0 | cResult3 = div255((255 - aDest) * cSrc[3] + aDest * cBlend[3]); |
748 | 0 | break; |
749 | 0 | #endif |
750 | | |
751 | 0 | case splashPipeResultColorAlphaNoBlendMono: |
752 | 0 | if (alphaI == 0) { |
753 | 0 | cResult0 = 0; |
754 | 0 | } else { |
755 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest[0] + aSrc * cSrc[0]) |
756 | 0 | / alphaI); |
757 | 0 | } |
758 | 0 | break; |
759 | 0 | case splashPipeResultColorAlphaNoBlendRGB: |
760 | 0 | if (alphaI == 0) { |
761 | 0 | cResult0 = 0; |
762 | 0 | cResult1 = 0; |
763 | 0 | cResult2 = 0; |
764 | 0 | } else { |
765 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest[0] + aSrc * cSrc[0]) |
766 | 0 | / alphaI); |
767 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest[1] + aSrc * cSrc[1]) |
768 | 0 | / alphaI); |
769 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest[2] + aSrc * cSrc[2]) |
770 | 0 | / alphaI); |
771 | 0 | } |
772 | 0 | break; |
773 | 0 | #if SPLASH_CMYK |
774 | 0 | case splashPipeResultColorAlphaNoBlendCMYK: |
775 | 0 | if (alphaI == 0) { |
776 | 0 | cResult0 = 0; |
777 | 0 | cResult1 = 0; |
778 | 0 | cResult2 = 0; |
779 | 0 | cResult3 = 0; |
780 | 0 | } else { |
781 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest[0] + aSrc * cSrc[0]) |
782 | 0 | / alphaI); |
783 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest[1] + aSrc * cSrc[1]) |
784 | 0 | / alphaI); |
785 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest[2] + aSrc * cSrc[2]) |
786 | 0 | / alphaI); |
787 | 0 | cResult3 = (Guchar)(((alphaI - aSrc) * cDest[3] + aSrc * cSrc[3]) |
788 | 0 | / alphaI); |
789 | 0 | } |
790 | 0 | break; |
791 | 0 | #endif |
792 | | |
793 | 0 | case splashPipeResultColorAlphaBlendMono: |
794 | 0 | if (alphaI == 0) { |
795 | 0 | cResult0 = 0; |
796 | 0 | } else { |
797 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest[0] + |
798 | 0 | aSrc * ((255 - alphaIm1) * cSrc[0] + |
799 | 0 | alphaIm1 * cBlend[0]) / 255) |
800 | 0 | / alphaI); |
801 | 0 | } |
802 | 0 | break; |
803 | 0 | case splashPipeResultColorAlphaBlendRGB: |
804 | 0 | if (alphaI == 0) { |
805 | 0 | cResult0 = 0; |
806 | 0 | cResult1 = 0; |
807 | 0 | cResult2 = 0; |
808 | 0 | } else { |
809 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest[0] + |
810 | 0 | aSrc * ((255 - alphaIm1) * cSrc[0] + |
811 | 0 | alphaIm1 * cBlend[0]) / 255) |
812 | 0 | / alphaI); |
813 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest[1] + |
814 | 0 | aSrc * ((255 - alphaIm1) * cSrc[1] + |
815 | 0 | alphaIm1 * cBlend[1]) / 255) |
816 | 0 | / alphaI); |
817 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest[2] + |
818 | 0 | aSrc * ((255 - alphaIm1) * cSrc[2] + |
819 | 0 | alphaIm1 * cBlend[2]) / 255) |
820 | 0 | / alphaI); |
821 | 0 | } |
822 | 0 | break; |
823 | 0 | #if SPLASH_CMYK |
824 | 0 | case splashPipeResultColorAlphaBlendCMYK: |
825 | 0 | if (alphaI == 0) { |
826 | 0 | cResult0 = 0; |
827 | 0 | cResult1 = 0; |
828 | 0 | cResult2 = 0; |
829 | 0 | cResult3 = 0; |
830 | 0 | } else { |
831 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest[0] + |
832 | 0 | aSrc * ((255 - alphaIm1) * cSrc[0] + |
833 | 0 | alphaIm1 * cBlend[0]) / 255) |
834 | 0 | / alphaI); |
835 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest[1] + |
836 | 0 | aSrc * ((255 - alphaIm1) * cSrc[1] + |
837 | 0 | alphaIm1 * cBlend[1]) / 255) |
838 | 0 | / alphaI); |
839 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest[2] + |
840 | 0 | aSrc * ((255 - alphaIm1) * cSrc[2] + |
841 | 0 | alphaIm1 * cBlend[2]) / 255) |
842 | 0 | / alphaI); |
843 | 0 | cResult3 = (Guchar)(((alphaI - aSrc) * cDest[3] + |
844 | 0 | aSrc * ((255 - alphaIm1) * cSrc[3] + |
845 | 0 | alphaIm1 * cBlend[3]) / 255) |
846 | 0 | / alphaI); |
847 | 0 | } |
848 | 0 | break; |
849 | 0 | #endif |
850 | 0 | } |
851 | |
|
852 | 0 | } // if (noTransparency && !blendFunc) |
853 | | |
854 | | //----- write destination pixel |
855 | | |
856 | 0 | switch (bitmap->mode) { |
857 | 0 | case splashModeMono1: |
858 | 0 | if (state->screen->test(x, y, cResult0)) { |
859 | 0 | *destColorPtr |= destColorMask; |
860 | 0 | } else { |
861 | 0 | *destColorPtr &= (Guchar)~destColorMask; |
862 | 0 | } |
863 | 0 | destColorPtr += destColorMask & 1; |
864 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
865 | 0 | break; |
866 | 0 | case splashModeMono8: |
867 | 0 | *destColorPtr++ = cResult0; |
868 | 0 | break; |
869 | 0 | case splashModeRGB8: |
870 | 0 | destColorPtr[0] = cResult0; |
871 | 0 | destColorPtr[1] = cResult1; |
872 | 0 | destColorPtr[2] = cResult2; |
873 | 0 | destColorPtr += 3; |
874 | 0 | break; |
875 | 0 | case splashModeBGR8: |
876 | 0 | destColorPtr[0] = cResult2; |
877 | 0 | destColorPtr[1] = cResult1; |
878 | 0 | destColorPtr[2] = cResult0; |
879 | 0 | destColorPtr += 3; |
880 | 0 | break; |
881 | 0 | #if SPLASH_CMYK |
882 | 0 | case splashModeCMYK8: |
883 | 0 | destColorPtr[0] = cResult0; |
884 | 0 | destColorPtr[1] = cResult1; |
885 | 0 | destColorPtr[2] = cResult2; |
886 | 0 | destColorPtr[3] = cResult3; |
887 | 0 | destColorPtr += 4; |
888 | 0 | break; |
889 | 0 | #endif |
890 | 0 | } |
891 | 0 | if (destAlphaPtr) { |
892 | 0 | *destAlphaPtr++ = aResult; |
893 | 0 | } |
894 | |
|
895 | 0 | cSrcPtr += cSrcStride; |
896 | 0 | shapePtr2 += shapeStride; |
897 | 0 | } // for (x ...) |
898 | | |
899 | 0 | updateModX(lastX); |
900 | 0 | } |
901 | | |
902 | | // special case: |
903 | | // !pipe->pattern && pipe->noTransparency && !state->blendFunc && |
904 | | // bitmap->mode == splashModeMono1 && !bitmap->alpha) { |
905 | | void Splash::pipeRunSimpleMono1(SplashPipe *pipe, int x0, int x1, int y, |
906 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
907 | 0 | Guchar cResult0; |
908 | 0 | SplashColorPtr destColorPtr; |
909 | 0 | Guchar destColorMask; |
910 | 0 | SplashScreenCursor screenCursor; |
911 | 0 | int cSrcStride, x; |
912 | |
|
913 | 0 | if (cSrcPtr) { |
914 | 0 | cSrcStride = 1; |
915 | 0 | } else { |
916 | 0 | cSrcPtr = pipe->cSrcVal; |
917 | 0 | cSrcStride = 0; |
918 | 0 | } |
919 | 0 | if (x0 > x1) { |
920 | 0 | return; |
921 | 0 | } |
922 | 0 | updateModX(x0); |
923 | 0 | updateModX(x1); |
924 | 0 | updateModY(y); |
925 | |
|
926 | 0 | useDestRow(y); |
927 | |
|
928 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; |
929 | 0 | destColorMask = (Guchar)(0x80 >> (x0 & 7)); |
930 | |
|
931 | 0 | screenCursor = state->screen->getTestCursor(y); |
932 | |
|
933 | 0 | for (x = x0; x <= x1; ++x) { |
934 | | |
935 | | //----- write destination pixel |
936 | 0 | cResult0 = state->grayTransfer[cSrcPtr[0]]; |
937 | 0 | if (state->screen->testWithCursor(screenCursor, x, cResult0)) { |
938 | 0 | *destColorPtr |= destColorMask; |
939 | 0 | } else { |
940 | 0 | *destColorPtr &= (Guchar)~destColorMask; |
941 | 0 | } |
942 | 0 | destColorPtr += destColorMask & 1; |
943 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
944 | |
|
945 | 0 | cSrcPtr += cSrcStride; |
946 | 0 | } |
947 | 0 | } |
948 | | |
949 | | // special case: |
950 | | // !pipe->pattern && pipe->noTransparency && !state->blendFunc && |
951 | | // bitmap->mode == splashModeMono8 && bitmap->alpha) { |
952 | | void Splash::pipeRunSimpleMono8(SplashPipe *pipe, int x0, int x1, int y, |
953 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
954 | 0 | SplashColorPtr destColorPtr; |
955 | 0 | Guchar *destAlphaPtr; |
956 | 0 | int cSrcStride, x; |
957 | |
|
958 | 0 | if (cSrcPtr) { |
959 | 0 | cSrcStride = 1; |
960 | 0 | } else { |
961 | 0 | cSrcPtr = pipe->cSrcVal; |
962 | 0 | cSrcStride = 0; |
963 | 0 | } |
964 | 0 | if (x0 > x1) { |
965 | 0 | return; |
966 | 0 | } |
967 | 0 | updateModX(x0); |
968 | 0 | updateModX(x1); |
969 | 0 | updateModY(y); |
970 | |
|
971 | 0 | useDestRow(y); |
972 | |
|
973 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0]; |
974 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
975 | |
|
976 | 0 | for (x = x0; x <= x1; ++x) { |
977 | | |
978 | | //----- write destination pixel |
979 | 0 | *destColorPtr++ = state->grayTransfer[cSrcPtr[0]]; |
980 | 0 | *destAlphaPtr++ = 255; |
981 | |
|
982 | 0 | cSrcPtr += cSrcStride; |
983 | 0 | } |
984 | 0 | } |
985 | | |
986 | | // special case: |
987 | | // !pipe->pattern && pipe->noTransparency && !state->blendFunc && |
988 | | // bitmap->mode == splashModeRGB8 && bitmap->alpha) { |
989 | | void Splash::pipeRunSimpleRGB8(SplashPipe *pipe, int x0, int x1, int y, |
990 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
991 | 0 | SplashColorPtr destColorPtr; |
992 | 0 | Guchar *destAlphaPtr; |
993 | 0 | int cSrcStride, x; |
994 | |
|
995 | 0 | if (cSrcPtr) { |
996 | 0 | cSrcStride = 3; |
997 | 0 | } else { |
998 | 0 | cSrcPtr = pipe->cSrcVal; |
999 | 0 | cSrcStride = 0; |
1000 | 0 | } |
1001 | 0 | if (x0 > x1) { |
1002 | 0 | return; |
1003 | 0 | } |
1004 | 0 | updateModX(x0); |
1005 | 0 | updateModX(x1); |
1006 | 0 | updateModY(y); |
1007 | |
|
1008 | 0 | useDestRow(y); |
1009 | |
|
1010 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 3 * x0]; |
1011 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1012 | |
|
1013 | 0 | for (x = x0; x <= x1; ++x) { |
1014 | | |
1015 | | //----- write destination pixel |
1016 | 0 | destColorPtr[0] = state->rgbTransferR[cSrcPtr[0]]; |
1017 | 0 | destColorPtr[1] = state->rgbTransferG[cSrcPtr[1]]; |
1018 | 0 | destColorPtr[2] = state->rgbTransferB[cSrcPtr[2]]; |
1019 | 0 | destColorPtr += 3; |
1020 | 0 | *destAlphaPtr++ = 255; |
1021 | |
|
1022 | 0 | cSrcPtr += cSrcStride; |
1023 | 0 | } |
1024 | 0 | } |
1025 | | |
1026 | | // special case: |
1027 | | // !pipe->pattern && pipe->noTransparency && !state->blendFunc && |
1028 | | // bitmap->mode == splashModeBGR8 && bitmap->alpha) { |
1029 | | void Splash::pipeRunSimpleBGR8(SplashPipe *pipe, int x0, int x1, int y, |
1030 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1031 | 0 | SplashColorPtr destColorPtr; |
1032 | 0 | Guchar *destAlphaPtr; |
1033 | 0 | int cSrcStride, x; |
1034 | |
|
1035 | 0 | if (cSrcPtr) { |
1036 | 0 | cSrcStride = 3; |
1037 | 0 | } else { |
1038 | 0 | cSrcPtr = pipe->cSrcVal; |
1039 | 0 | cSrcStride = 0; |
1040 | 0 | } |
1041 | 0 | if (x0 > x1) { |
1042 | 0 | return; |
1043 | 0 | } |
1044 | 0 | updateModX(x0); |
1045 | 0 | updateModX(x1); |
1046 | 0 | updateModY(y); |
1047 | |
|
1048 | 0 | useDestRow(y); |
1049 | |
|
1050 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 3 * x0]; |
1051 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1052 | |
|
1053 | 0 | for (x = x0; x <= x1; ++x) { |
1054 | | |
1055 | | //----- write destination pixel |
1056 | 0 | destColorPtr[0] = state->rgbTransferB[cSrcPtr[2]]; |
1057 | 0 | destColorPtr[1] = state->rgbTransferG[cSrcPtr[1]]; |
1058 | 0 | destColorPtr[2] = state->rgbTransferR[cSrcPtr[0]]; |
1059 | 0 | destColorPtr += 3; |
1060 | 0 | *destAlphaPtr++ = 255; |
1061 | |
|
1062 | 0 | cSrcPtr += cSrcStride; |
1063 | 0 | } |
1064 | 0 | } |
1065 | | |
1066 | | #if SPLASH_CMYK |
1067 | | // special case: |
1068 | | // !pipe->pattern && pipe->noTransparency && !state->blendFunc && |
1069 | | // bitmap->mode == splashModeCMYK8 && bitmap->alpha) { |
1070 | | void Splash::pipeRunSimpleCMYK8(SplashPipe *pipe, int x0, int x1, int y, |
1071 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1072 | 0 | SplashColorPtr destColorPtr; |
1073 | 0 | Guchar *destAlphaPtr; |
1074 | 0 | int cSrcStride, x; |
1075 | |
|
1076 | 0 | if (cSrcPtr) { |
1077 | 0 | cSrcStride = 4; |
1078 | 0 | } else { |
1079 | 0 | cSrcPtr = pipe->cSrcVal; |
1080 | 0 | cSrcStride = 0; |
1081 | 0 | } |
1082 | 0 | if (x0 > x1) { |
1083 | 0 | return; |
1084 | 0 | } |
1085 | 0 | updateModX(x0); |
1086 | 0 | updateModX(x1); |
1087 | 0 | updateModY(y); |
1088 | |
|
1089 | 0 | useDestRow(y); |
1090 | |
|
1091 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 4 * x0]; |
1092 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1093 | |
|
1094 | 0 | for (x = x0; x <= x1; ++x) { |
1095 | | |
1096 | | //----- write destination pixel |
1097 | 0 | destColorPtr[0] = state->cmykTransferC[cSrcPtr[0]]; |
1098 | 0 | destColorPtr[1] = state->cmykTransferM[cSrcPtr[1]]; |
1099 | 0 | destColorPtr[2] = state->cmykTransferY[cSrcPtr[2]]; |
1100 | 0 | destColorPtr[3] = state->cmykTransferK[cSrcPtr[3]]; |
1101 | 0 | destColorPtr += 4; |
1102 | 0 | *destAlphaPtr++ = 255; |
1103 | |
|
1104 | 0 | cSrcPtr += cSrcStride; |
1105 | 0 | } |
1106 | 0 | } |
1107 | | #endif |
1108 | | |
1109 | | |
1110 | | // special case: |
1111 | | // !pipe->pattern && pipe->shapeOnly && !state->blendFunc && |
1112 | | // bitmap->mode == splashModeMono1 && !bitmap->alpha |
1113 | | void Splash::pipeRunShapeMono1(SplashPipe *pipe, int x0, int x1, int y, |
1114 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1115 | 0 | Guchar shape, aSrc, cSrc0, cDest0, cResult0; |
1116 | 0 | SplashColorPtr destColorPtr; |
1117 | 0 | Guchar destColorMask; |
1118 | 0 | SplashScreenCursor screenCursor; |
1119 | 0 | int cSrcStride, x, lastX; |
1120 | |
|
1121 | 0 | if (cSrcPtr) { |
1122 | 0 | cSrcStride = 1; |
1123 | 0 | } else { |
1124 | 0 | cSrcPtr = pipe->cSrcVal; |
1125 | 0 | cSrcStride = 0; |
1126 | 0 | } |
1127 | 0 | for (; x0 <= x1; ++x0) { |
1128 | 0 | if (*shapePtr) { |
1129 | 0 | break; |
1130 | 0 | } |
1131 | 0 | cSrcPtr += cSrcStride; |
1132 | 0 | ++shapePtr; |
1133 | 0 | } |
1134 | 0 | if (x0 > x1) { |
1135 | 0 | return; |
1136 | 0 | } |
1137 | 0 | updateModX(x0); |
1138 | 0 | updateModY(y); |
1139 | 0 | lastX = x0; |
1140 | |
|
1141 | 0 | useDestRow(y); |
1142 | |
|
1143 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; |
1144 | 0 | destColorMask = (Guchar)(0x80 >> (x0 & 7)); |
1145 | |
|
1146 | 0 | screenCursor = state->screen->getTestCursor(y); |
1147 | |
|
1148 | 0 | for (x = x0; x <= x1; ++x) { |
1149 | | |
1150 | | //----- shape |
1151 | 0 | shape = *shapePtr; |
1152 | 0 | if (!shape) { |
1153 | 0 | destColorPtr += destColorMask & 1; |
1154 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
1155 | 0 | cSrcPtr += cSrcStride; |
1156 | 0 | ++shapePtr; |
1157 | 0 | continue; |
1158 | 0 | } |
1159 | 0 | lastX = x; |
1160 | | |
1161 | | //----- source color |
1162 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
1163 | | |
1164 | | //----- source alpha |
1165 | 0 | aSrc = shape; |
1166 | | |
1167 | | //----- special case for aSrc = 255 |
1168 | 0 | if (aSrc == 255) { |
1169 | 0 | cResult0 = cSrc0; |
1170 | 0 | } else { |
1171 | | |
1172 | | //----- read destination pixel |
1173 | 0 | cDest0 = (*destColorPtr & destColorMask) ? 0xff : 0x00; |
1174 | | |
1175 | | //----- result color |
1176 | | // note: aDest = alphaI = aResult = 0xff |
1177 | 0 | cResult0 = (Guchar)div255((0xff - aSrc) * cDest0 + aSrc * cSrc0); |
1178 | 0 | } |
1179 | | |
1180 | | //----- write destination pixel |
1181 | 0 | if (state->screen->testWithCursor(screenCursor, x, cResult0)) { |
1182 | 0 | *destColorPtr |= destColorMask; |
1183 | 0 | } else { |
1184 | 0 | *destColorPtr &= (Guchar)~destColorMask; |
1185 | 0 | } |
1186 | 0 | destColorPtr += destColorMask & 1; |
1187 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
1188 | |
|
1189 | 0 | cSrcPtr += cSrcStride; |
1190 | 0 | ++shapePtr; |
1191 | 0 | } |
1192 | |
|
1193 | 0 | updateModX(lastX); |
1194 | 0 | } |
1195 | | |
1196 | | // special case: |
1197 | | // !pipe->pattern && pipe->shapeOnly && !state->blendFunc && |
1198 | | // bitmap->mode == splashModeMono8 && bitmap->alpha |
1199 | | void Splash::pipeRunShapeMono8(SplashPipe *pipe, int x0, int x1, int y, |
1200 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1201 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult, cSrc0, cDest0, cResult0; |
1202 | 0 | SplashColorPtr destColorPtr; |
1203 | 0 | Guchar *destAlphaPtr; |
1204 | 0 | int cSrcStride, x, lastX; |
1205 | |
|
1206 | 0 | if (cSrcPtr) { |
1207 | 0 | cSrcStride = 1; |
1208 | 0 | } else { |
1209 | 0 | cSrcPtr = pipe->cSrcVal; |
1210 | 0 | cSrcStride = 0; |
1211 | 0 | } |
1212 | 0 | for (; x0 <= x1; ++x0) { |
1213 | 0 | if (*shapePtr) { |
1214 | 0 | break; |
1215 | 0 | } |
1216 | 0 | cSrcPtr += cSrcStride; |
1217 | 0 | ++shapePtr; |
1218 | 0 | } |
1219 | 0 | if (x0 > x1) { |
1220 | 0 | return; |
1221 | 0 | } |
1222 | 0 | updateModX(x0); |
1223 | 0 | updateModY(y); |
1224 | 0 | lastX = x0; |
1225 | |
|
1226 | 0 | useDestRow(y); |
1227 | |
|
1228 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0]; |
1229 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1230 | |
|
1231 | 0 | for (x = x0; x <= x1; ++x) { |
1232 | | |
1233 | | //----- shape |
1234 | 0 | shape = *shapePtr; |
1235 | 0 | if (!shape) { |
1236 | 0 | ++destColorPtr; |
1237 | 0 | ++destAlphaPtr; |
1238 | 0 | cSrcPtr += cSrcStride; |
1239 | 0 | ++shapePtr; |
1240 | 0 | continue; |
1241 | 0 | } |
1242 | 0 | lastX = x; |
1243 | | |
1244 | | //----- source color |
1245 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
1246 | | |
1247 | | //----- source alpha |
1248 | 0 | aSrc = shape; |
1249 | | |
1250 | | //----- special case for aSrc = 255 |
1251 | 0 | if (aSrc == 255) { |
1252 | 0 | aResult = 255; |
1253 | 0 | cResult0 = cSrc0; |
1254 | 0 | } else { |
1255 | | |
1256 | | //----- read destination alpha |
1257 | 0 | aDest = *destAlphaPtr; |
1258 | | |
1259 | | //----- special case for aDest = 0 |
1260 | 0 | if (aDest == 0) { |
1261 | 0 | aResult = aSrc; |
1262 | 0 | cResult0 = cSrc0; |
1263 | 0 | } else { |
1264 | | |
1265 | | //----- read destination pixel |
1266 | 0 | cDest0 = *destColorPtr; |
1267 | | |
1268 | | //----- result alpha and non-isolated group element correction |
1269 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
1270 | 0 | alphaI = aResult; |
1271 | | |
1272 | | //----- result color |
1273 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
1274 | 0 | } |
1275 | 0 | } |
1276 | | |
1277 | | //----- write destination pixel |
1278 | 0 | *destColorPtr++ = cResult0; |
1279 | 0 | *destAlphaPtr++ = aResult; |
1280 | |
|
1281 | 0 | cSrcPtr += cSrcStride; |
1282 | 0 | ++shapePtr; |
1283 | 0 | } |
1284 | |
|
1285 | 0 | updateModX(lastX); |
1286 | 0 | } |
1287 | | |
1288 | | // special case: |
1289 | | // !pipe->pattern && pipe->shapeOnly && !state->blendFunc && |
1290 | | // bitmap->mode == splashModeRGB8 && bitmap->alpha |
1291 | | void Splash::pipeRunShapeRGB8(SplashPipe *pipe, int x0, int x1, int y, |
1292 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1293 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
1294 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
1295 | 0 | Guchar cDest0, cDest1, cDest2; |
1296 | 0 | Guchar cResult0, cResult1, cResult2; |
1297 | 0 | SplashColorPtr destColorPtr; |
1298 | 0 | Guchar *destAlphaPtr; |
1299 | 0 | int cSrcStride, x, lastX; |
1300 | |
|
1301 | 0 | if (cSrcPtr) { |
1302 | 0 | cSrcStride = 3; |
1303 | 0 | } else { |
1304 | 0 | cSrcPtr = pipe->cSrcVal; |
1305 | 0 | cSrcStride = 0; |
1306 | 0 | } |
1307 | 0 | for (; x0 <= x1; ++x0) { |
1308 | 0 | if (*shapePtr) { |
1309 | 0 | break; |
1310 | 0 | } |
1311 | 0 | cSrcPtr += cSrcStride; |
1312 | 0 | ++shapePtr; |
1313 | 0 | } |
1314 | 0 | if (x0 > x1) { |
1315 | 0 | return; |
1316 | 0 | } |
1317 | 0 | updateModX(x0); |
1318 | 0 | updateModY(y); |
1319 | 0 | lastX = x0; |
1320 | |
|
1321 | 0 | useDestRow(y); |
1322 | |
|
1323 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 3 * x0]; |
1324 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1325 | |
|
1326 | 0 | for (x = x0; x <= x1; ++x) { |
1327 | | |
1328 | | //----- shape |
1329 | 0 | shape = *shapePtr; |
1330 | 0 | if (!shape) { |
1331 | 0 | destColorPtr += 3; |
1332 | 0 | ++destAlphaPtr; |
1333 | 0 | cSrcPtr += cSrcStride; |
1334 | 0 | ++shapePtr; |
1335 | 0 | continue; |
1336 | 0 | } |
1337 | 0 | lastX = x; |
1338 | | |
1339 | | //----- source color |
1340 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
1341 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
1342 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
1343 | | |
1344 | | //----- source alpha |
1345 | 0 | aSrc = shape; |
1346 | | |
1347 | | //----- special case for aSrc = 255 |
1348 | 0 | if (aSrc == 255) { |
1349 | 0 | aResult = 255; |
1350 | 0 | cResult0 = cSrc0; |
1351 | 0 | cResult1 = cSrc1; |
1352 | 0 | cResult2 = cSrc2; |
1353 | 0 | } else { |
1354 | | |
1355 | | //----- read destination alpha |
1356 | 0 | aDest = *destAlphaPtr; |
1357 | | |
1358 | | //----- special case for aDest = 0 |
1359 | 0 | if (aDest == 0) { |
1360 | 0 | aResult = aSrc; |
1361 | 0 | cResult0 = cSrc0; |
1362 | 0 | cResult1 = cSrc1; |
1363 | 0 | cResult2 = cSrc2; |
1364 | 0 | } else { |
1365 | | |
1366 | | //----- read destination pixel |
1367 | 0 | cDest0 = destColorPtr[0]; |
1368 | 0 | cDest1 = destColorPtr[1]; |
1369 | 0 | cDest2 = destColorPtr[2]; |
1370 | | |
1371 | | //----- result alpha and non-isolated group element correction |
1372 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
1373 | 0 | alphaI = aResult; |
1374 | | |
1375 | | //----- result color |
1376 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
1377 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
1378 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
1379 | 0 | } |
1380 | 0 | } |
1381 | | |
1382 | | //----- write destination pixel |
1383 | 0 | destColorPtr[0] = cResult0; |
1384 | 0 | destColorPtr[1] = cResult1; |
1385 | 0 | destColorPtr[2] = cResult2; |
1386 | 0 | destColorPtr += 3; |
1387 | 0 | *destAlphaPtr++ = aResult; |
1388 | |
|
1389 | 0 | cSrcPtr += cSrcStride; |
1390 | 0 | ++shapePtr; |
1391 | 0 | } |
1392 | |
|
1393 | 0 | updateModX(lastX); |
1394 | 0 | } |
1395 | | |
1396 | | // special case: |
1397 | | // !pipe->pattern && pipe->shapeOnly && !state->blendFunc && |
1398 | | // bitmap->mode == splashModeBGR8 && bitmap->alpha |
1399 | | void Splash::pipeRunShapeBGR8(SplashPipe *pipe, int x0, int x1, int y, |
1400 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1401 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
1402 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
1403 | 0 | Guchar cDest0, cDest1, cDest2; |
1404 | 0 | Guchar cResult0, cResult1, cResult2; |
1405 | 0 | SplashColorPtr destColorPtr; |
1406 | 0 | Guchar *destAlphaPtr; |
1407 | 0 | int cSrcStride, x, lastX; |
1408 | |
|
1409 | 0 | if (cSrcPtr) { |
1410 | 0 | cSrcStride = 3; |
1411 | 0 | } else { |
1412 | 0 | cSrcPtr = pipe->cSrcVal; |
1413 | 0 | cSrcStride = 0; |
1414 | 0 | } |
1415 | 0 | for (; x0 <= x1; ++x0) { |
1416 | 0 | if (*shapePtr) { |
1417 | 0 | break; |
1418 | 0 | } |
1419 | 0 | cSrcPtr += cSrcStride; |
1420 | 0 | ++shapePtr; |
1421 | 0 | } |
1422 | 0 | if (x0 > x1) { |
1423 | 0 | return; |
1424 | 0 | } |
1425 | 0 | updateModX(x0); |
1426 | 0 | updateModY(y); |
1427 | 0 | lastX = x0; |
1428 | |
|
1429 | 0 | useDestRow(y); |
1430 | |
|
1431 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 3 * x0]; |
1432 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1433 | |
|
1434 | 0 | for (x = x0; x <= x1; ++x) { |
1435 | | |
1436 | | //----- shape |
1437 | 0 | shape = *shapePtr; |
1438 | 0 | if (!shape) { |
1439 | 0 | destColorPtr += 3; |
1440 | 0 | ++destAlphaPtr; |
1441 | 0 | cSrcPtr += cSrcStride; |
1442 | 0 | ++shapePtr; |
1443 | 0 | continue; |
1444 | 0 | } |
1445 | 0 | lastX = x; |
1446 | | |
1447 | | //----- source color |
1448 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
1449 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
1450 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
1451 | | |
1452 | | //----- source alpha |
1453 | 0 | aSrc = shape; |
1454 | | |
1455 | | //----- special case for aSrc = 255 |
1456 | 0 | if (aSrc == 255) { |
1457 | 0 | aResult = 255; |
1458 | 0 | cResult0 = cSrc0; |
1459 | 0 | cResult1 = cSrc1; |
1460 | 0 | cResult2 = cSrc2; |
1461 | 0 | } else { |
1462 | | |
1463 | | //----- read destination alpha |
1464 | 0 | aDest = *destAlphaPtr; |
1465 | | |
1466 | | //----- special case for aDest = 0 |
1467 | 0 | if (aDest == 0) { |
1468 | 0 | aResult = aSrc; |
1469 | 0 | cResult0 = cSrc0; |
1470 | 0 | cResult1 = cSrc1; |
1471 | 0 | cResult2 = cSrc2; |
1472 | 0 | } else { |
1473 | | |
1474 | | //----- read destination pixel |
1475 | 0 | cDest0 = destColorPtr[2]; |
1476 | 0 | cDest1 = destColorPtr[1]; |
1477 | 0 | cDest2 = destColorPtr[0]; |
1478 | | |
1479 | | //----- result alpha and non-isolated group element correction |
1480 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
1481 | 0 | alphaI = aResult; |
1482 | | |
1483 | | //----- result color |
1484 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
1485 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
1486 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
1487 | 0 | } |
1488 | 0 | } |
1489 | | |
1490 | | //----- write destination pixel |
1491 | 0 | destColorPtr[0] = cResult2; |
1492 | 0 | destColorPtr[1] = cResult1; |
1493 | 0 | destColorPtr[2] = cResult0; |
1494 | 0 | destColorPtr += 3; |
1495 | 0 | *destAlphaPtr++ = aResult; |
1496 | |
|
1497 | 0 | cSrcPtr += cSrcStride; |
1498 | 0 | ++shapePtr; |
1499 | 0 | } |
1500 | |
|
1501 | 0 | updateModX(lastX); |
1502 | 0 | } |
1503 | | |
1504 | | #if SPLASH_CMYK |
1505 | | // special case: |
1506 | | // !pipe->pattern && pipe->shapeOnly && !state->blendFunc && |
1507 | | // bitmap->mode == splashModeCMYK8 && bitmap->alpha |
1508 | | void Splash::pipeRunShapeCMYK8(SplashPipe *pipe, int x0, int x1, int y, |
1509 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1510 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
1511 | 0 | Guchar cSrc0, cSrc1, cSrc2, cSrc3; |
1512 | 0 | Guchar cDest0, cDest1, cDest2, cDest3; |
1513 | 0 | Guchar cResult0, cResult1, cResult2, cResult3; |
1514 | 0 | SplashColorPtr destColorPtr; |
1515 | 0 | Guchar *destAlphaPtr; |
1516 | 0 | int cSrcStride, x, lastX; |
1517 | |
|
1518 | 0 | if (cSrcPtr) { |
1519 | 0 | cSrcStride = 4; |
1520 | 0 | } else { |
1521 | 0 | cSrcPtr = pipe->cSrcVal; |
1522 | 0 | cSrcStride = 0; |
1523 | 0 | } |
1524 | 0 | for (; x0 <= x1; ++x0) { |
1525 | 0 | if (*shapePtr) { |
1526 | 0 | break; |
1527 | 0 | } |
1528 | 0 | cSrcPtr += cSrcStride; |
1529 | 0 | ++shapePtr; |
1530 | 0 | } |
1531 | 0 | if (x0 > x1) { |
1532 | 0 | return; |
1533 | 0 | } |
1534 | 0 | updateModX(x0); |
1535 | 0 | updateModY(y); |
1536 | 0 | lastX = x0; |
1537 | |
|
1538 | 0 | useDestRow(y); |
1539 | |
|
1540 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 4 * x0]; |
1541 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1542 | |
|
1543 | 0 | for (x = x0; x <= x1; ++x) { |
1544 | | |
1545 | | //----- shape |
1546 | 0 | shape = *shapePtr; |
1547 | 0 | if (!shape) { |
1548 | 0 | destColorPtr += 4; |
1549 | 0 | ++destAlphaPtr; |
1550 | 0 | cSrcPtr += cSrcStride; |
1551 | 0 | ++shapePtr; |
1552 | 0 | continue; |
1553 | 0 | } |
1554 | 0 | lastX = x; |
1555 | | |
1556 | | //----- read destination pixel |
1557 | 0 | cDest0 = destColorPtr[0]; |
1558 | 0 | cDest1 = destColorPtr[1]; |
1559 | 0 | cDest2 = destColorPtr[2]; |
1560 | 0 | cDest3 = destColorPtr[3]; |
1561 | 0 | aDest = *destAlphaPtr; |
1562 | | |
1563 | | //----- overprint |
1564 | 0 | cSrc0 = state->cmykTransferC[cSrcPtr[0]]; |
1565 | 0 | cSrc1 = state->cmykTransferM[cSrcPtr[1]]; |
1566 | 0 | cSrc2 = state->cmykTransferY[cSrcPtr[2]]; |
1567 | 0 | cSrc3 = state->cmykTransferK[cSrcPtr[3]]; |
1568 | | |
1569 | | //----- source alpha |
1570 | 0 | aSrc = shape; |
1571 | | |
1572 | | //----- special case for aSrc = 255 |
1573 | 0 | if (aSrc == 255) { |
1574 | 0 | aResult = 255; |
1575 | 0 | cResult0 = cSrc0; |
1576 | 0 | cResult1 = cSrc1; |
1577 | 0 | cResult2 = cSrc2; |
1578 | 0 | cResult3 = cSrc3; |
1579 | 0 | } else { |
1580 | | |
1581 | | //----- special case for aDest = 0 |
1582 | 0 | if (aDest == 0) { |
1583 | 0 | aResult = aSrc; |
1584 | 0 | cResult0 = cSrc0; |
1585 | 0 | cResult1 = cSrc1; |
1586 | 0 | cResult2 = cSrc2; |
1587 | 0 | cResult3 = cSrc3; |
1588 | 0 | } else { |
1589 | | |
1590 | | //----- result alpha and non-isolated group element correction |
1591 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
1592 | 0 | alphaI = aResult; |
1593 | | |
1594 | | //----- result color |
1595 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
1596 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
1597 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
1598 | 0 | cResult3 = (Guchar)(((alphaI - aSrc) * cDest3 + aSrc * cSrc3) / alphaI); |
1599 | 0 | } |
1600 | 0 | } |
1601 | | |
1602 | | //----- write destination pixel |
1603 | 0 | destColorPtr[0] = cResult0; |
1604 | 0 | destColorPtr[1] = cResult1; |
1605 | 0 | destColorPtr[2] = cResult2; |
1606 | 0 | destColorPtr[3] = cResult3; |
1607 | 0 | destColorPtr += 4; |
1608 | 0 | *destAlphaPtr++ = aResult; |
1609 | |
|
1610 | 0 | cSrcPtr += cSrcStride; |
1611 | 0 | ++shapePtr; |
1612 | 0 | } |
1613 | |
|
1614 | 0 | updateModX(lastX); |
1615 | 0 | } |
1616 | | #endif |
1617 | | |
1618 | | |
1619 | | // special case: |
1620 | | // !pipe->pattern && pipe->shapeOnly && !state->blendFunc && |
1621 | | // bitmap->mode == splashModeMono8 && !bitmap->alpha |
1622 | | void Splash::pipeRunShapeNoAlphaMono8(SplashPipe *pipe, int x0, int x1, int y, |
1623 | | Guchar *shapePtr, |
1624 | 0 | SplashColorPtr cSrcPtr) { |
1625 | 0 | Guchar shape, aSrc, cSrc0, cDest0, cResult0; |
1626 | 0 | SplashColorPtr destColorPtr; |
1627 | 0 | int cSrcStride, x, lastX; |
1628 | |
|
1629 | 0 | if (cSrcPtr) { |
1630 | 0 | cSrcStride = 1; |
1631 | 0 | } else { |
1632 | 0 | cSrcPtr = pipe->cSrcVal; |
1633 | 0 | cSrcStride = 0; |
1634 | 0 | } |
1635 | 0 | for (; x0 <= x1; ++x0) { |
1636 | 0 | if (*shapePtr) { |
1637 | 0 | break; |
1638 | 0 | } |
1639 | 0 | cSrcPtr += cSrcStride; |
1640 | 0 | ++shapePtr; |
1641 | 0 | } |
1642 | 0 | if (x0 > x1) { |
1643 | 0 | return; |
1644 | 0 | } |
1645 | 0 | updateModX(x0); |
1646 | 0 | updateModY(y); |
1647 | 0 | lastX = x0; |
1648 | |
|
1649 | 0 | useDestRow(y); |
1650 | |
|
1651 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0]; |
1652 | |
|
1653 | 0 | for (x = x0; x <= x1; ++x) { |
1654 | | |
1655 | | //----- shape |
1656 | 0 | shape = *shapePtr; |
1657 | 0 | if (!shape) { |
1658 | 0 | ++destColorPtr; |
1659 | 0 | cSrcPtr += cSrcStride; |
1660 | 0 | ++shapePtr; |
1661 | 0 | continue; |
1662 | 0 | } |
1663 | 0 | lastX = x; |
1664 | | |
1665 | | //----- source color |
1666 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
1667 | | |
1668 | | //----- source alpha |
1669 | 0 | aSrc = shape; |
1670 | | |
1671 | | //----- special case for aSrc = 255 |
1672 | 0 | if (aSrc == 255) { |
1673 | 0 | cResult0 = cSrc0; |
1674 | 0 | } else { |
1675 | | |
1676 | | //----- read destination pixel |
1677 | 0 | cDest0 = *destColorPtr; |
1678 | | |
1679 | | //----- result color |
1680 | 0 | cResult0 = div255((255 - aSrc) * cDest0 + aSrc * cSrc0); |
1681 | 0 | } |
1682 | | |
1683 | | //----- write destination pixel |
1684 | 0 | *destColorPtr++ = cResult0; |
1685 | |
|
1686 | 0 | cSrcPtr += cSrcStride; |
1687 | 0 | ++shapePtr; |
1688 | 0 | } |
1689 | |
|
1690 | 0 | updateModX(lastX); |
1691 | 0 | } |
1692 | | |
1693 | | // special case: |
1694 | | // !pipe->pattern && !pipe->noTransparency && !state->softMask && |
1695 | | // pipe->usesShape && !pipe->alpha0Ptr && !state->blendFunc && |
1696 | | // !pipe->nonIsolatedGroup && |
1697 | | // bitmap->mode == splashModeMono1 && !bitmap->alpha |
1698 | | void Splash::pipeRunAAMono1(SplashPipe *pipe, int x0, int x1, int y, |
1699 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1700 | 0 | Guchar shape, aSrc, cSrc0, cDest0, cResult0; |
1701 | 0 | SplashColorPtr destColorPtr; |
1702 | 0 | Guchar destColorMask; |
1703 | 0 | SplashScreenCursor screenCursor; |
1704 | 0 | int cSrcStride, x, lastX; |
1705 | |
|
1706 | 0 | if (cSrcPtr) { |
1707 | 0 | cSrcStride = 1; |
1708 | 0 | } else { |
1709 | 0 | cSrcPtr = pipe->cSrcVal; |
1710 | 0 | cSrcStride = 0; |
1711 | 0 | } |
1712 | 0 | for (; x0 <= x1; ++x0) { |
1713 | 0 | if (*shapePtr) { |
1714 | 0 | break; |
1715 | 0 | } |
1716 | 0 | cSrcPtr += cSrcStride; |
1717 | 0 | ++shapePtr; |
1718 | 0 | } |
1719 | 0 | if (x0 > x1) { |
1720 | 0 | return; |
1721 | 0 | } |
1722 | 0 | updateModX(x0); |
1723 | 0 | updateModY(y); |
1724 | 0 | lastX = x0; |
1725 | |
|
1726 | 0 | useDestRow(y); |
1727 | |
|
1728 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; |
1729 | 0 | destColorMask = (Guchar)(0x80 >> (x0 & 7)); |
1730 | |
|
1731 | 0 | screenCursor = state->screen->getTestCursor(y); |
1732 | |
|
1733 | 0 | for (x = x0; x <= x1; ++x) { |
1734 | | |
1735 | | //----- shape |
1736 | 0 | shape = *shapePtr; |
1737 | 0 | if (!shape) { |
1738 | 0 | destColorPtr += destColorMask & 1; |
1739 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
1740 | 0 | cSrcPtr += cSrcStride; |
1741 | 0 | ++shapePtr; |
1742 | 0 | continue; |
1743 | 0 | } |
1744 | 0 | lastX = x; |
1745 | | |
1746 | | //----- read destination pixel |
1747 | 0 | cDest0 = (*destColorPtr & destColorMask) ? 0xff : 0x00; |
1748 | | |
1749 | | //----- source color |
1750 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
1751 | | |
1752 | | //----- source alpha |
1753 | 0 | aSrc = div255(pipe->aInput * shape); |
1754 | | |
1755 | | //----- result color |
1756 | | // note: aDest = alphaI = aResult = 0xff |
1757 | 0 | cResult0 = (Guchar)div255((0xff - aSrc) * cDest0 + aSrc * cSrc0); |
1758 | | |
1759 | | //----- write destination pixel |
1760 | 0 | if (state->screen->testWithCursor(screenCursor, x, cResult0)) { |
1761 | 0 | *destColorPtr |= destColorMask; |
1762 | 0 | } else { |
1763 | 0 | *destColorPtr &= (Guchar)~destColorMask; |
1764 | 0 | } |
1765 | 0 | destColorPtr += destColorMask & 1; |
1766 | 0 | destColorMask = (Guchar)((destColorMask << 7) | (destColorMask >> 1)); |
1767 | |
|
1768 | 0 | cSrcPtr += cSrcStride; |
1769 | 0 | ++shapePtr; |
1770 | 0 | } |
1771 | |
|
1772 | 0 | updateModX(lastX); |
1773 | 0 | } |
1774 | | |
1775 | | // special case: |
1776 | | // !pipe->pattern && !pipe->noTransparency && !state->softMask && |
1777 | | // pipe->usesShape && !pipe->alpha0Ptr && !state->blendFunc && |
1778 | | // !pipe->nonIsolatedGroup && |
1779 | | // bitmap->mode == splashModeMono8 && bitmap->alpha |
1780 | | void Splash::pipeRunAAMono8(SplashPipe *pipe, int x0, int x1, int y, |
1781 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1782 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult, cSrc0, cDest0, cResult0; |
1783 | 0 | SplashColorPtr destColorPtr; |
1784 | 0 | Guchar *destAlphaPtr; |
1785 | 0 | int cSrcStride, x, lastX; |
1786 | |
|
1787 | 0 | if (cSrcPtr) { |
1788 | 0 | cSrcStride = 1; |
1789 | 0 | } else { |
1790 | 0 | cSrcPtr = pipe->cSrcVal; |
1791 | 0 | cSrcStride = 0; |
1792 | 0 | } |
1793 | 0 | for (; x0 <= x1; ++x0) { |
1794 | 0 | if (*shapePtr) { |
1795 | 0 | break; |
1796 | 0 | } |
1797 | 0 | cSrcPtr += cSrcStride; |
1798 | 0 | ++shapePtr; |
1799 | 0 | } |
1800 | 0 | if (x0 > x1) { |
1801 | 0 | return; |
1802 | 0 | } |
1803 | 0 | updateModX(x0); |
1804 | 0 | updateModY(y); |
1805 | 0 | lastX = x0; |
1806 | |
|
1807 | 0 | useDestRow(y); |
1808 | |
|
1809 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0]; |
1810 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1811 | |
|
1812 | 0 | for (x = x0; x <= x1; ++x) { |
1813 | | |
1814 | | //----- shape |
1815 | 0 | shape = *shapePtr; |
1816 | 0 | if (!shape) { |
1817 | 0 | ++destColorPtr; |
1818 | 0 | ++destAlphaPtr; |
1819 | 0 | cSrcPtr += cSrcStride; |
1820 | 0 | ++shapePtr; |
1821 | 0 | continue; |
1822 | 0 | } |
1823 | 0 | lastX = x; |
1824 | | |
1825 | | //----- read destination pixel |
1826 | 0 | cDest0 = *destColorPtr; |
1827 | 0 | aDest = *destAlphaPtr; |
1828 | | |
1829 | | //----- source color |
1830 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
1831 | | |
1832 | | //----- source alpha |
1833 | 0 | aSrc = div255(pipe->aInput * shape); |
1834 | | |
1835 | | //----- result alpha and non-isolated group element correction |
1836 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
1837 | 0 | alphaI = aResult; |
1838 | | |
1839 | | //----- result color |
1840 | 0 | if (alphaI == 0) { |
1841 | 0 | cResult0 = 0; |
1842 | 0 | } else { |
1843 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
1844 | 0 | } |
1845 | | |
1846 | | //----- write destination pixel |
1847 | 0 | *destColorPtr++ = cResult0; |
1848 | 0 | *destAlphaPtr++ = aResult; |
1849 | |
|
1850 | 0 | cSrcPtr += cSrcStride; |
1851 | 0 | ++shapePtr; |
1852 | 0 | } |
1853 | |
|
1854 | 0 | updateModX(lastX); |
1855 | 0 | } |
1856 | | |
1857 | | // special case: |
1858 | | // !pipe->pattern && !pipe->noTransparency && !state->softMask && |
1859 | | // pipe->usesShape && !pipe->alpha0Ptr && !state->blendFunc && |
1860 | | // !pipe->nonIsolatedGroup && |
1861 | | // bitmap->mode == splashModeRGB8 && bitmap->alpha |
1862 | | void Splash::pipeRunAARGB8(SplashPipe *pipe, int x0, int x1, int y, |
1863 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1864 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
1865 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
1866 | 0 | Guchar cDest0, cDest1, cDest2; |
1867 | 0 | Guchar cResult0, cResult1, cResult2; |
1868 | 0 | SplashColorPtr destColorPtr; |
1869 | 0 | Guchar *destAlphaPtr; |
1870 | 0 | int cSrcStride, x, lastX; |
1871 | |
|
1872 | 0 | if (cSrcPtr) { |
1873 | 0 | cSrcStride = 3; |
1874 | 0 | } else { |
1875 | 0 | cSrcPtr = pipe->cSrcVal; |
1876 | 0 | cSrcStride = 0; |
1877 | 0 | } |
1878 | 0 | for (; x0 <= x1; ++x0) { |
1879 | 0 | if (*shapePtr) { |
1880 | 0 | break; |
1881 | 0 | } |
1882 | 0 | cSrcPtr += cSrcStride; |
1883 | 0 | ++shapePtr; |
1884 | 0 | } |
1885 | 0 | if (x0 > x1) { |
1886 | 0 | return; |
1887 | 0 | } |
1888 | 0 | updateModX(x0); |
1889 | 0 | updateModY(y); |
1890 | 0 | lastX = x0; |
1891 | |
|
1892 | 0 | useDestRow(y); |
1893 | |
|
1894 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 3 * x0]; |
1895 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1896 | |
|
1897 | 0 | for (x = x0; x <= x1; ++x) { |
1898 | | |
1899 | | //----- shape |
1900 | 0 | shape = *shapePtr; |
1901 | 0 | if (!shape) { |
1902 | 0 | destColorPtr += 3; |
1903 | 0 | ++destAlphaPtr; |
1904 | 0 | cSrcPtr += cSrcStride; |
1905 | 0 | ++shapePtr; |
1906 | 0 | continue; |
1907 | 0 | } |
1908 | 0 | lastX = x; |
1909 | | |
1910 | | //----- read destination pixel |
1911 | 0 | cDest0 = destColorPtr[0]; |
1912 | 0 | cDest1 = destColorPtr[1]; |
1913 | 0 | cDest2 = destColorPtr[2]; |
1914 | 0 | aDest = *destAlphaPtr; |
1915 | | |
1916 | | //----- source color |
1917 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
1918 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
1919 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
1920 | | |
1921 | | //----- source alpha |
1922 | 0 | aSrc = div255(pipe->aInput * shape); |
1923 | | |
1924 | | //----- result alpha and non-isolated group element correction |
1925 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
1926 | 0 | alphaI = aResult; |
1927 | | |
1928 | | //----- result color |
1929 | 0 | if (alphaI == 0) { |
1930 | 0 | cResult0 = 0; |
1931 | 0 | cResult1 = 0; |
1932 | 0 | cResult2 = 0; |
1933 | 0 | } else { |
1934 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
1935 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
1936 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
1937 | 0 | } |
1938 | | |
1939 | | //----- write destination pixel |
1940 | 0 | destColorPtr[0] = cResult0; |
1941 | 0 | destColorPtr[1] = cResult1; |
1942 | 0 | destColorPtr[2] = cResult2; |
1943 | 0 | destColorPtr += 3; |
1944 | 0 | *destAlphaPtr++ = aResult; |
1945 | |
|
1946 | 0 | cSrcPtr += cSrcStride; |
1947 | 0 | ++shapePtr; |
1948 | 0 | } |
1949 | |
|
1950 | 0 | updateModX(lastX); |
1951 | 0 | } |
1952 | | |
1953 | | // special case: |
1954 | | // !pipe->pattern && !pipe->noTransparency && !state->softMask && |
1955 | | // pipe->usesShape && !pipe->alpha0Ptr && !state->blendFunc && |
1956 | | // !pipe->nonIsolatedGroup && |
1957 | | // bitmap->mode == splashModeBGR8 && bitmap->alpha |
1958 | | void Splash::pipeRunAABGR8(SplashPipe *pipe, int x0, int x1, int y, |
1959 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
1960 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
1961 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
1962 | 0 | Guchar cDest0, cDest1, cDest2; |
1963 | 0 | Guchar cResult0, cResult1, cResult2; |
1964 | 0 | SplashColorPtr destColorPtr; |
1965 | 0 | Guchar *destAlphaPtr; |
1966 | 0 | int cSrcStride, x, lastX; |
1967 | |
|
1968 | 0 | if (cSrcPtr) { |
1969 | 0 | cSrcStride = 3; |
1970 | 0 | } else { |
1971 | 0 | cSrcPtr = pipe->cSrcVal; |
1972 | 0 | cSrcStride = 0; |
1973 | 0 | } |
1974 | 0 | for (; x0 <= x1; ++x0) { |
1975 | 0 | if (*shapePtr) { |
1976 | 0 | break; |
1977 | 0 | } |
1978 | 0 | cSrcPtr += cSrcStride; |
1979 | 0 | ++shapePtr; |
1980 | 0 | } |
1981 | 0 | if (x0 > x1) { |
1982 | 0 | return; |
1983 | 0 | } |
1984 | 0 | updateModX(x0); |
1985 | 0 | updateModY(y); |
1986 | 0 | lastX = x0; |
1987 | |
|
1988 | 0 | useDestRow(y); |
1989 | |
|
1990 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 3 * x0]; |
1991 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
1992 | |
|
1993 | 0 | for (x = x0; x <= x1; ++x) { |
1994 | | |
1995 | | //----- shape |
1996 | 0 | shape = *shapePtr; |
1997 | 0 | if (!shape) { |
1998 | 0 | destColorPtr += 3; |
1999 | 0 | ++destAlphaPtr; |
2000 | 0 | cSrcPtr += cSrcStride; |
2001 | 0 | ++shapePtr; |
2002 | 0 | continue; |
2003 | 0 | } |
2004 | 0 | lastX = x; |
2005 | | |
2006 | | //----- read destination pixel |
2007 | 0 | cDest0 = destColorPtr[2]; |
2008 | 0 | cDest1 = destColorPtr[1]; |
2009 | 0 | cDest2 = destColorPtr[0]; |
2010 | 0 | aDest = *destAlphaPtr; |
2011 | | |
2012 | | //----- source color |
2013 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
2014 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
2015 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
2016 | | |
2017 | | //----- source alpha |
2018 | 0 | aSrc = div255(pipe->aInput * shape); |
2019 | | |
2020 | | //----- result alpha and non-isolated group element correction |
2021 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2022 | 0 | alphaI = aResult; |
2023 | | |
2024 | | //----- result color |
2025 | 0 | if (alphaI == 0) { |
2026 | 0 | cResult0 = 0; |
2027 | 0 | cResult1 = 0; |
2028 | 0 | cResult2 = 0; |
2029 | 0 | } else { |
2030 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2031 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2032 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2033 | 0 | } |
2034 | | |
2035 | | //----- write destination pixel |
2036 | 0 | destColorPtr[0] = cResult2; |
2037 | 0 | destColorPtr[1] = cResult1; |
2038 | 0 | destColorPtr[2] = cResult0; |
2039 | 0 | destColorPtr += 3; |
2040 | 0 | *destAlphaPtr++ = aResult; |
2041 | |
|
2042 | 0 | cSrcPtr += cSrcStride; |
2043 | 0 | ++shapePtr; |
2044 | 0 | } |
2045 | |
|
2046 | 0 | updateModX(lastX); |
2047 | 0 | } |
2048 | | |
2049 | | #if SPLASH_CMYK |
2050 | | // special case: |
2051 | | // !pipe->pattern && !pipe->noTransparency && !state->softMask && |
2052 | | // pipe->usesShape && !pipe->alpha0Ptr && !state->blendFunc && |
2053 | | // !pipe->nonIsolatedGroup && |
2054 | | // bitmap->mode == splashModeCMYK8 && bitmap->alpha |
2055 | | void Splash::pipeRunAACMYK8(SplashPipe *pipe, int x0, int x1, int y, |
2056 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2057 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
2058 | 0 | Guchar cSrc0, cSrc1, cSrc2, cSrc3; |
2059 | 0 | Guchar cDest0, cDest1, cDest2, cDest3; |
2060 | 0 | Guchar cResult0, cResult1, cResult2, cResult3; |
2061 | 0 | SplashColorPtr destColorPtr; |
2062 | 0 | Guchar *destAlphaPtr; |
2063 | 0 | int cSrcStride, x, lastX; |
2064 | |
|
2065 | 0 | if (cSrcPtr) { |
2066 | 0 | cSrcStride = 4; |
2067 | 0 | } else { |
2068 | 0 | cSrcPtr = pipe->cSrcVal; |
2069 | 0 | cSrcStride = 0; |
2070 | 0 | } |
2071 | 0 | for (; x0 <= x1; ++x0) { |
2072 | 0 | if (*shapePtr) { |
2073 | 0 | break; |
2074 | 0 | } |
2075 | 0 | cSrcPtr += cSrcStride; |
2076 | 0 | ++shapePtr; |
2077 | 0 | } |
2078 | 0 | if (x0 > x1) { |
2079 | 0 | return; |
2080 | 0 | } |
2081 | 0 | updateModX(x0); |
2082 | 0 | updateModY(y); |
2083 | 0 | lastX = x0; |
2084 | |
|
2085 | 0 | useDestRow(y); |
2086 | |
|
2087 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + 4 * x0]; |
2088 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2089 | |
|
2090 | 0 | for (x = x0; x <= x1; ++x) { |
2091 | | |
2092 | | //----- shape |
2093 | 0 | shape = *shapePtr; |
2094 | 0 | if (!shape) { |
2095 | 0 | destColorPtr += 4; |
2096 | 0 | ++destAlphaPtr; |
2097 | 0 | cSrcPtr += cSrcStride; |
2098 | 0 | ++shapePtr; |
2099 | 0 | continue; |
2100 | 0 | } |
2101 | 0 | lastX = x; |
2102 | | |
2103 | | //----- read destination pixel |
2104 | 0 | cDest0 = destColorPtr[0]; |
2105 | 0 | cDest1 = destColorPtr[1]; |
2106 | 0 | cDest2 = destColorPtr[2]; |
2107 | 0 | cDest3 = destColorPtr[3]; |
2108 | 0 | aDest = *destAlphaPtr; |
2109 | | |
2110 | | //----- overprint |
2111 | 0 | if (state->overprintMask & 1) { |
2112 | 0 | cSrc0 = state->cmykTransferC[cSrcPtr[0]]; |
2113 | 0 | } else { |
2114 | 0 | cSrc0 = div255(aDest * cDest0); |
2115 | 0 | } |
2116 | 0 | if (state->overprintMask & 2) { |
2117 | 0 | cSrc1 = state->cmykTransferM[cSrcPtr[1]]; |
2118 | 0 | } else { |
2119 | 0 | cSrc1 = div255(aDest * cDest1); |
2120 | 0 | } |
2121 | 0 | if (state->overprintMask & 4) { |
2122 | 0 | cSrc2 = state->cmykTransferY[cSrcPtr[2]]; |
2123 | 0 | } else { |
2124 | 0 | cSrc2 = div255(aDest * cDest2); |
2125 | 0 | } |
2126 | 0 | if (state->overprintMask & 8) { |
2127 | 0 | cSrc3 = state->cmykTransferK[cSrcPtr[3]]; |
2128 | 0 | } else { |
2129 | 0 | cSrc3 = div255(aDest * cDest3); |
2130 | 0 | } |
2131 | | |
2132 | | //----- source alpha |
2133 | 0 | aSrc = div255(pipe->aInput * shape); |
2134 | | |
2135 | | //----- result alpha and non-isolated group element correction |
2136 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2137 | 0 | alphaI = aResult; |
2138 | | |
2139 | | //----- result color |
2140 | 0 | if (alphaI == 0) { |
2141 | 0 | cResult0 = 0; |
2142 | 0 | cResult1 = 0; |
2143 | 0 | cResult2 = 0; |
2144 | 0 | cResult3 = 0; |
2145 | 0 | } else { |
2146 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2147 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2148 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2149 | 0 | cResult3 = (Guchar)(((alphaI - aSrc) * cDest3 + aSrc * cSrc3) / alphaI); |
2150 | 0 | } |
2151 | | |
2152 | | //----- write destination pixel |
2153 | 0 | destColorPtr[0] = cResult0; |
2154 | 0 | destColorPtr[1] = cResult1; |
2155 | 0 | destColorPtr[2] = cResult2; |
2156 | 0 | destColorPtr[3] = cResult3; |
2157 | 0 | destColorPtr += 4; |
2158 | 0 | *destAlphaPtr++ = aResult; |
2159 | |
|
2160 | 0 | cSrcPtr += cSrcStride; |
2161 | 0 | ++shapePtr; |
2162 | 0 | } |
2163 | |
|
2164 | 0 | updateModX(lastX); |
2165 | 0 | } |
2166 | | #endif |
2167 | | |
2168 | | |
2169 | | // special case: |
2170 | | // !pipe->pattern && aInput == 255 && state->softMask && usesShape && |
2171 | | // !state->inNonIsolatedGroup && !state->inKnockoutGroup && |
2172 | | // !nonIsolatedGroup && state->overprintMask == 0xffffffff && |
2173 | | // !state->blendFunc && |
2174 | | // bitmap->mode == splashModeMono8 && bitmap->alpha |
2175 | | void Splash::pipeRunSoftMaskMono8(SplashPipe *pipe, int x0, int x1, int y, |
2176 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2177 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
2178 | 0 | Guchar cSrc0, cDest0, cResult0; |
2179 | 0 | SplashColorPtr destColorPtr; |
2180 | 0 | Guchar *destAlphaPtr; |
2181 | 0 | SplashColorPtr softMaskPtr; |
2182 | 0 | int cSrcStride, x, lastX; |
2183 | |
|
2184 | 0 | if (cSrcPtr) { |
2185 | 0 | cSrcStride = 1; |
2186 | 0 | } else { |
2187 | 0 | cSrcPtr = pipe->cSrcVal; |
2188 | 0 | cSrcStride = 0; |
2189 | 0 | } |
2190 | 0 | for (; x0 <= x1; ++x0) { |
2191 | 0 | if (*shapePtr) { |
2192 | 0 | break; |
2193 | 0 | } |
2194 | 0 | cSrcPtr += cSrcStride; |
2195 | 0 | ++shapePtr; |
2196 | 0 | } |
2197 | 0 | if (x0 > x1) { |
2198 | 0 | return; |
2199 | 0 | } |
2200 | 0 | updateModX(x0); |
2201 | 0 | updateModY(y); |
2202 | 0 | lastX = x0; |
2203 | |
|
2204 | 0 | useDestRow(y); |
2205 | |
|
2206 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0]; |
2207 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2208 | 0 | softMaskPtr = &state->softMask->data[y * state->softMask->rowSize + x0]; |
2209 | |
|
2210 | 0 | for (x = x0; x <= x1; ++x) { |
2211 | | |
2212 | | //----- shape |
2213 | 0 | shape = *shapePtr; |
2214 | 0 | if (!shape) { |
2215 | 0 | ++destColorPtr; |
2216 | 0 | ++destAlphaPtr; |
2217 | 0 | ++softMaskPtr; |
2218 | 0 | cSrcPtr += cSrcStride; |
2219 | 0 | ++shapePtr; |
2220 | 0 | continue; |
2221 | 0 | } |
2222 | 0 | lastX = x; |
2223 | | |
2224 | | //----- read source color |
2225 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
2226 | | |
2227 | | //----- source alpha |
2228 | 0 | aSrc = div255(*softMaskPtr++ * shape); |
2229 | | |
2230 | | //----- special case for aSrc = 255 |
2231 | 0 | if (aSrc == 255) { |
2232 | 0 | aResult = 255; |
2233 | 0 | cResult0 = cSrc0; |
2234 | 0 | } else { |
2235 | | |
2236 | | //----- read destination alpha |
2237 | 0 | aDest = *destAlphaPtr; |
2238 | | |
2239 | | //----- special case for aDest = 0 |
2240 | 0 | if (aDest == 0) { |
2241 | 0 | aResult = aSrc; |
2242 | 0 | cResult0 = cSrc0; |
2243 | 0 | } else { |
2244 | | |
2245 | | //----- read destination pixel |
2246 | 0 | cDest0 = destColorPtr[0]; |
2247 | | |
2248 | | //----- result alpha and non-isolated group element correction |
2249 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2250 | 0 | alphaI = aResult; |
2251 | | |
2252 | | //----- result color |
2253 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2254 | 0 | } |
2255 | 0 | } |
2256 | | |
2257 | | //----- write destination pixel |
2258 | 0 | destColorPtr[0] = cResult0; |
2259 | 0 | ++destColorPtr; |
2260 | 0 | *destAlphaPtr++ = aResult; |
2261 | |
|
2262 | 0 | cSrcPtr += cSrcStride; |
2263 | 0 | ++shapePtr; |
2264 | 0 | } |
2265 | |
|
2266 | 0 | updateModX(lastX); |
2267 | 0 | } |
2268 | | |
2269 | | // special case: |
2270 | | // !pipe->pattern && aInput == 255 && state->softMask && usesShape && |
2271 | | // !state->inNonIsolatedGroup && !state->inKnockoutGroup && |
2272 | | // !nonIsolatedGroup && state->overprintMask == 0xffffffff && |
2273 | | // !state->blendFunc && |
2274 | | // bitmap->mode == splashModeRGB8 && bitmap->alpha |
2275 | | void Splash::pipeRunSoftMaskRGB8(SplashPipe *pipe, int x0, int x1, int y, |
2276 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2277 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
2278 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
2279 | 0 | Guchar cDest0, cDest1, cDest2; |
2280 | 0 | Guchar cResult0, cResult1, cResult2; |
2281 | 0 | SplashColorPtr destColorPtr; |
2282 | 0 | Guchar *destAlphaPtr; |
2283 | 0 | SplashColorPtr softMaskPtr; |
2284 | 0 | int cSrcStride, x, lastX; |
2285 | |
|
2286 | 0 | if (cSrcPtr) { |
2287 | 0 | cSrcStride = 3; |
2288 | 0 | } else { |
2289 | 0 | cSrcPtr = pipe->cSrcVal; |
2290 | 0 | cSrcStride = 0; |
2291 | 0 | } |
2292 | 0 | for (; x0 <= x1; ++x0) { |
2293 | 0 | if (*shapePtr) { |
2294 | 0 | break; |
2295 | 0 | } |
2296 | 0 | cSrcPtr += cSrcStride; |
2297 | 0 | ++shapePtr; |
2298 | 0 | } |
2299 | 0 | if (x0 > x1) { |
2300 | 0 | return; |
2301 | 0 | } |
2302 | 0 | updateModX(x0); |
2303 | 0 | updateModY(y); |
2304 | 0 | lastX = x0; |
2305 | |
|
2306 | 0 | useDestRow(y); |
2307 | |
|
2308 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * 3]; |
2309 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2310 | 0 | softMaskPtr = &state->softMask->data[y * state->softMask->rowSize + x0]; |
2311 | |
|
2312 | 0 | for (x = x0; x <= x1; ++x) { |
2313 | | |
2314 | | //----- shape |
2315 | 0 | shape = *shapePtr; |
2316 | 0 | if (!shape) { |
2317 | 0 | destColorPtr += 3; |
2318 | 0 | ++destAlphaPtr; |
2319 | 0 | ++softMaskPtr; |
2320 | 0 | cSrcPtr += cSrcStride; |
2321 | 0 | ++shapePtr; |
2322 | 0 | continue; |
2323 | 0 | } |
2324 | 0 | lastX = x; |
2325 | | |
2326 | | //----- read source color |
2327 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
2328 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
2329 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
2330 | | |
2331 | | //----- source alpha |
2332 | 0 | aSrc = div255(*softMaskPtr++ * shape); |
2333 | | |
2334 | | //----- special case for aSrc = 255 |
2335 | 0 | if (aSrc == 255) { |
2336 | 0 | aResult = 255; |
2337 | 0 | cResult0 = cSrc0; |
2338 | 0 | cResult1 = cSrc1; |
2339 | 0 | cResult2 = cSrc2; |
2340 | 0 | } else { |
2341 | | |
2342 | | //----- read destination alpha |
2343 | 0 | aDest = *destAlphaPtr; |
2344 | | |
2345 | | //----- special case for aDest = 0 |
2346 | 0 | if (aDest == 0) { |
2347 | 0 | aResult = aSrc; |
2348 | 0 | cResult0 = cSrc0; |
2349 | 0 | cResult1 = cSrc1; |
2350 | 0 | cResult2 = cSrc2; |
2351 | 0 | } else { |
2352 | | |
2353 | | //----- read destination pixel |
2354 | 0 | cDest0 = destColorPtr[0]; |
2355 | 0 | cDest1 = destColorPtr[1]; |
2356 | 0 | cDest2 = destColorPtr[2]; |
2357 | | |
2358 | | //----- result alpha and non-isolated group element correction |
2359 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2360 | 0 | alphaI = aResult; |
2361 | | |
2362 | | //----- result color |
2363 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2364 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2365 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2366 | 0 | } |
2367 | 0 | } |
2368 | | |
2369 | | //----- write destination pixel |
2370 | 0 | destColorPtr[0] = cResult0; |
2371 | 0 | destColorPtr[1] = cResult1; |
2372 | 0 | destColorPtr[2] = cResult2; |
2373 | 0 | destColorPtr += 3; |
2374 | 0 | *destAlphaPtr++ = aResult; |
2375 | |
|
2376 | 0 | cSrcPtr += cSrcStride; |
2377 | 0 | ++shapePtr; |
2378 | 0 | } |
2379 | |
|
2380 | 0 | updateModX(lastX); |
2381 | 0 | } |
2382 | | |
2383 | | // special case: |
2384 | | // !pipe->pattern && aInput == 255 && state->softMask && usesShape && |
2385 | | // !state->inNonIsolatedGroup && !state->inKnockoutGroup && |
2386 | | // !nonIsolatedGroup && state->overprintMask == 0xffffffff && |
2387 | | // !state->blendFunc && |
2388 | | // bitmap->mode == splashModeBGR8 && bitmap->alpha |
2389 | | void Splash::pipeRunSoftMaskBGR8(SplashPipe *pipe, int x0, int x1, int y, |
2390 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2391 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
2392 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
2393 | 0 | Guchar cDest0, cDest1, cDest2; |
2394 | 0 | Guchar cResult0, cResult1, cResult2; |
2395 | 0 | SplashColorPtr destColorPtr; |
2396 | 0 | Guchar *destAlphaPtr; |
2397 | 0 | SplashColorPtr softMaskPtr; |
2398 | 0 | int cSrcStride, x, lastX; |
2399 | |
|
2400 | 0 | if (cSrcPtr) { |
2401 | 0 | cSrcStride = 3; |
2402 | 0 | } else { |
2403 | 0 | cSrcPtr = pipe->cSrcVal; |
2404 | 0 | cSrcStride = 0; |
2405 | 0 | } |
2406 | 0 | for (; x0 <= x1; ++x0) { |
2407 | 0 | if (*shapePtr) { |
2408 | 0 | break; |
2409 | 0 | } |
2410 | 0 | cSrcPtr += cSrcStride; |
2411 | 0 | ++shapePtr; |
2412 | 0 | } |
2413 | 0 | if (x0 > x1) { |
2414 | 0 | return; |
2415 | 0 | } |
2416 | 0 | updateModX(x0); |
2417 | 0 | updateModY(y); |
2418 | 0 | lastX = x0; |
2419 | |
|
2420 | 0 | useDestRow(y); |
2421 | |
|
2422 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * 3]; |
2423 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2424 | 0 | softMaskPtr = &state->softMask->data[y * state->softMask->rowSize + x0]; |
2425 | |
|
2426 | 0 | for (x = x0; x <= x1; ++x) { |
2427 | | |
2428 | | //----- shape |
2429 | 0 | shape = *shapePtr; |
2430 | 0 | if (!shape) { |
2431 | 0 | destColorPtr += 3; |
2432 | 0 | ++destAlphaPtr; |
2433 | 0 | ++softMaskPtr; |
2434 | 0 | cSrcPtr += cSrcStride; |
2435 | 0 | ++shapePtr; |
2436 | 0 | continue; |
2437 | 0 | } |
2438 | 0 | lastX = x; |
2439 | | |
2440 | | //----- read source color |
2441 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
2442 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
2443 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
2444 | | |
2445 | | //----- source alpha |
2446 | 0 | aSrc = div255(*softMaskPtr++ * shape); |
2447 | | |
2448 | | //----- special case for aSrc = 255 |
2449 | 0 | if (aSrc == 255) { |
2450 | 0 | aResult = 255; |
2451 | 0 | cResult0 = cSrc0; |
2452 | 0 | cResult1 = cSrc1; |
2453 | 0 | cResult2 = cSrc2; |
2454 | 0 | } else { |
2455 | | |
2456 | | //----- read destination alpha |
2457 | 0 | aDest = *destAlphaPtr; |
2458 | | |
2459 | | //----- special case for aDest = 0 |
2460 | 0 | if (aDest == 0) { |
2461 | 0 | aResult = aSrc; |
2462 | 0 | cResult0 = cSrc0; |
2463 | 0 | cResult1 = cSrc1; |
2464 | 0 | cResult2 = cSrc2; |
2465 | 0 | } else { |
2466 | | |
2467 | | //----- read destination pixel |
2468 | 0 | cDest0 = destColorPtr[2]; |
2469 | 0 | cDest1 = destColorPtr[1]; |
2470 | 0 | cDest2 = destColorPtr[0]; |
2471 | | |
2472 | | //----- result alpha and non-isolated group element correction |
2473 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2474 | 0 | alphaI = aResult; |
2475 | | |
2476 | | //----- result color |
2477 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2478 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2479 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2480 | 0 | } |
2481 | 0 | } |
2482 | | |
2483 | | //----- write destination pixel |
2484 | 0 | destColorPtr[2] = cResult0; |
2485 | 0 | destColorPtr[1] = cResult1; |
2486 | 0 | destColorPtr[0] = cResult2; |
2487 | 0 | destColorPtr += 3; |
2488 | 0 | *destAlphaPtr++ = aResult; |
2489 | |
|
2490 | 0 | cSrcPtr += cSrcStride; |
2491 | 0 | ++shapePtr; |
2492 | 0 | } |
2493 | |
|
2494 | 0 | updateModX(lastX); |
2495 | 0 | } |
2496 | | |
2497 | | #if SPLASH_CMYK |
2498 | | // special case: |
2499 | | // !pipe->pattern && aInput == 255 && state->softMask && usesShape && |
2500 | | // !state->inNonIsolatedGroup && !state->inKnockoutGroup && |
2501 | | // !nonIsolatedGroup && state->overprintMask == 0xffffffff && |
2502 | | // !state->blendFunc && |
2503 | | // bitmap->mode == splashModeCMYK8 && bitmap->alpha |
2504 | | void Splash::pipeRunSoftMaskCMYK8(SplashPipe *pipe, int x0, int x1, int y, |
2505 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2506 | 0 | Guchar shape, aSrc, aDest, alphaI, aResult; |
2507 | 0 | Guchar cSrc0, cSrc1, cSrc2, cSrc3; |
2508 | 0 | Guchar cDest0, cDest1, cDest2, cDest3; |
2509 | 0 | Guchar cResult0, cResult1, cResult2, cResult3; |
2510 | 0 | SplashColorPtr destColorPtr; |
2511 | 0 | Guchar *destAlphaPtr; |
2512 | 0 | SplashColorPtr softMaskPtr; |
2513 | 0 | int cSrcStride, x, lastX; |
2514 | |
|
2515 | 0 | if (cSrcPtr) { |
2516 | 0 | cSrcStride = 4; |
2517 | 0 | } else { |
2518 | 0 | cSrcPtr = pipe->cSrcVal; |
2519 | 0 | cSrcStride = 0; |
2520 | 0 | } |
2521 | 0 | for (; x0 <= x1; ++x0) { |
2522 | 0 | if (*shapePtr) { |
2523 | 0 | break; |
2524 | 0 | } |
2525 | 0 | cSrcPtr += cSrcStride; |
2526 | 0 | ++shapePtr; |
2527 | 0 | } |
2528 | 0 | if (x0 > x1) { |
2529 | 0 | return; |
2530 | 0 | } |
2531 | 0 | updateModX(x0); |
2532 | 0 | updateModY(y); |
2533 | 0 | lastX = x0; |
2534 | |
|
2535 | 0 | useDestRow(y); |
2536 | |
|
2537 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * 4]; |
2538 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2539 | 0 | softMaskPtr = &state->softMask->data[y * state->softMask->rowSize + x0]; |
2540 | |
|
2541 | 0 | for (x = x0; x <= x1; ++x) { |
2542 | | |
2543 | | //----- shape |
2544 | 0 | shape = *shapePtr; |
2545 | 0 | if (!shape) { |
2546 | 0 | destColorPtr += 4; |
2547 | 0 | ++destAlphaPtr; |
2548 | 0 | ++softMaskPtr; |
2549 | 0 | cSrcPtr += cSrcStride; |
2550 | 0 | ++shapePtr; |
2551 | 0 | continue; |
2552 | 0 | } |
2553 | 0 | lastX = x; |
2554 | | |
2555 | | //----- read destination pixel |
2556 | 0 | cDest0 = destColorPtr[0]; |
2557 | 0 | cDest1 = destColorPtr[1]; |
2558 | 0 | cDest2 = destColorPtr[2]; |
2559 | 0 | cDest3 = destColorPtr[3]; |
2560 | | |
2561 | | //----- read destination alpha |
2562 | 0 | aDest = *destAlphaPtr; |
2563 | | |
2564 | | //----- overprint |
2565 | 0 | cSrc0 = state->cmykTransferC[cSrcPtr[0]]; |
2566 | 0 | cSrc1 = state->cmykTransferM[cSrcPtr[1]]; |
2567 | 0 | cSrc2 = state->cmykTransferY[cSrcPtr[2]]; |
2568 | 0 | cSrc3 = state->cmykTransferK[cSrcPtr[3]]; |
2569 | | |
2570 | | //----- source alpha |
2571 | 0 | aSrc = div255(*softMaskPtr++ * shape); |
2572 | | |
2573 | | //----- special case for aSrc = 255 |
2574 | 0 | if (aSrc == 255) { |
2575 | 0 | aResult = 255; |
2576 | 0 | cResult0 = cSrc0; |
2577 | 0 | cResult1 = cSrc1; |
2578 | 0 | cResult2 = cSrc2; |
2579 | 0 | cResult3 = cSrc3; |
2580 | 0 | } else { |
2581 | | |
2582 | | //----- special case for aDest = 0 |
2583 | 0 | if (aDest == 0) { |
2584 | 0 | aResult = aSrc; |
2585 | 0 | cResult0 = cSrc0; |
2586 | 0 | cResult1 = cSrc1; |
2587 | 0 | cResult2 = cSrc2; |
2588 | 0 | cResult3 = cSrc3; |
2589 | 0 | } else { |
2590 | | |
2591 | | //----- result alpha and non-isolated group element correction |
2592 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2593 | 0 | alphaI = aResult; |
2594 | | |
2595 | | //----- result color |
2596 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2597 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2598 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2599 | 0 | cResult3 = (Guchar)(((alphaI - aSrc) * cDest3 + aSrc * cSrc3) / alphaI); |
2600 | 0 | } |
2601 | 0 | } |
2602 | | |
2603 | | //----- write destination pixel |
2604 | 0 | destColorPtr[0] = cResult0; |
2605 | 0 | destColorPtr[1] = cResult1; |
2606 | 0 | destColorPtr[2] = cResult2; |
2607 | 0 | destColorPtr[3] = cResult3; |
2608 | 0 | destColorPtr += 4; |
2609 | 0 | *destAlphaPtr++ = aResult; |
2610 | |
|
2611 | 0 | cSrcPtr += cSrcStride; |
2612 | 0 | ++shapePtr; |
2613 | 0 | } |
2614 | |
|
2615 | 0 | updateModX(lastX); |
2616 | 0 | } |
2617 | | #endif |
2618 | | |
2619 | | |
2620 | | void Splash::pipeRunNonIsoMono8(SplashPipe *pipe, int x0, int x1, int y, |
2621 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2622 | 0 | Guchar shape, aSrc, aDest, alphaI, alpha0, aResult; |
2623 | 0 | Guchar cSrc0, cDest0, cResult0; |
2624 | 0 | SplashColorPtr destColorPtr; |
2625 | 0 | Guchar *destAlphaPtr; |
2626 | 0 | Guchar *alpha0Ptr; |
2627 | 0 | int cSrcStride, x, lastX; |
2628 | |
|
2629 | 0 | if (cSrcPtr) { |
2630 | 0 | cSrcStride = 1; |
2631 | 0 | } else { |
2632 | 0 | cSrcPtr = pipe->cSrcVal; |
2633 | 0 | cSrcStride = 0; |
2634 | 0 | } |
2635 | 0 | for (; x0 <= x1; ++x0) { |
2636 | 0 | if (*shapePtr) { |
2637 | 0 | break; |
2638 | 0 | } |
2639 | 0 | cSrcPtr += cSrcStride; |
2640 | 0 | ++shapePtr; |
2641 | 0 | } |
2642 | 0 | if (x0 > x1) { |
2643 | 0 | return; |
2644 | 0 | } |
2645 | 0 | updateModX(x0); |
2646 | 0 | updateModY(y); |
2647 | 0 | lastX = x0; |
2648 | |
|
2649 | 0 | useDestRow(y); |
2650 | |
|
2651 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0]; |
2652 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2653 | 0 | alpha0Ptr = &groupBackBitmap->alpha[(groupBackY + y) |
2654 | 0 | * groupBackBitmap->alphaRowSize + |
2655 | 0 | (groupBackX + x0)]; |
2656 | |
|
2657 | 0 | for (x = x0; x <= x1; ++x) { |
2658 | | |
2659 | | //----- shape |
2660 | 0 | shape = *shapePtr; |
2661 | 0 | if (!shape) { |
2662 | 0 | destColorPtr += 1; |
2663 | 0 | ++destAlphaPtr; |
2664 | 0 | ++alpha0Ptr; |
2665 | 0 | cSrcPtr += cSrcStride; |
2666 | 0 | ++shapePtr; |
2667 | 0 | continue; |
2668 | 0 | } |
2669 | 0 | lastX = x; |
2670 | | |
2671 | | //----- read destination pixel |
2672 | 0 | cDest0 = destColorPtr[0]; |
2673 | 0 | aDest = *destAlphaPtr; |
2674 | | |
2675 | | //----- source color |
2676 | 0 | cSrc0 = state->grayTransfer[cSrcPtr[0]]; |
2677 | | |
2678 | | //----- source alpha |
2679 | 0 | aSrc = div255(pipe->aInput * shape); |
2680 | | |
2681 | | //----- result alpha and non-isolated group element correction |
2682 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2683 | 0 | alpha0 = *alpha0Ptr++; |
2684 | 0 | alphaI = (Guchar)(aResult + alpha0 - div255(aResult * alpha0)); |
2685 | | |
2686 | | //----- result color |
2687 | 0 | if (alphaI == 0) { |
2688 | 0 | cResult0 = 0; |
2689 | 0 | } else { |
2690 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2691 | 0 | } |
2692 | | |
2693 | | //----- write destination pixel |
2694 | 0 | *destColorPtr++ = cResult0; |
2695 | 0 | *destAlphaPtr++ = aResult; |
2696 | |
|
2697 | 0 | cSrcPtr += cSrcStride; |
2698 | 0 | ++shapePtr; |
2699 | 0 | } // for (x ...) |
2700 | |
|
2701 | 0 | updateModX(lastX); |
2702 | 0 | } |
2703 | | |
2704 | | void Splash::pipeRunNonIsoRGB8(SplashPipe *pipe, int x0, int x1, int y, |
2705 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2706 | 0 | Guchar shape, aSrc, aDest, alphaI, alpha0, aResult; |
2707 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
2708 | 0 | Guchar cDest0, cDest1, cDest2; |
2709 | 0 | Guchar cResult0, cResult1, cResult2; |
2710 | 0 | SplashColorPtr destColorPtr; |
2711 | 0 | Guchar *destAlphaPtr; |
2712 | 0 | Guchar *alpha0Ptr; |
2713 | 0 | int cSrcStride, x, lastX; |
2714 | |
|
2715 | 0 | if (cSrcPtr) { |
2716 | 0 | cSrcStride = 3; |
2717 | 0 | } else { |
2718 | 0 | cSrcPtr = pipe->cSrcVal; |
2719 | 0 | cSrcStride = 0; |
2720 | 0 | } |
2721 | 0 | for (; x0 <= x1; ++x0) { |
2722 | 0 | if (*shapePtr) { |
2723 | 0 | break; |
2724 | 0 | } |
2725 | 0 | cSrcPtr += cSrcStride; |
2726 | 0 | ++shapePtr; |
2727 | 0 | } |
2728 | 0 | if (x0 > x1) { |
2729 | 0 | return; |
2730 | 0 | } |
2731 | 0 | updateModX(x0); |
2732 | 0 | updateModY(y); |
2733 | 0 | lastX = x0; |
2734 | |
|
2735 | 0 | useDestRow(y); |
2736 | |
|
2737 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * 3]; |
2738 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2739 | 0 | alpha0Ptr = &groupBackBitmap->alpha[(groupBackY + y) |
2740 | 0 | * groupBackBitmap->alphaRowSize + |
2741 | 0 | (groupBackX + x0)]; |
2742 | |
|
2743 | 0 | for (x = x0; x <= x1; ++x) { |
2744 | | |
2745 | | //----- shape |
2746 | 0 | shape = *shapePtr; |
2747 | 0 | if (!shape) { |
2748 | 0 | destColorPtr += 3; |
2749 | 0 | ++destAlphaPtr; |
2750 | 0 | ++alpha0Ptr; |
2751 | 0 | cSrcPtr += cSrcStride; |
2752 | 0 | ++shapePtr; |
2753 | 0 | continue; |
2754 | 0 | } |
2755 | 0 | lastX = x; |
2756 | | |
2757 | | //----- read destination pixel |
2758 | 0 | cDest0 = destColorPtr[0]; |
2759 | 0 | cDest1 = destColorPtr[1]; |
2760 | 0 | cDest2 = destColorPtr[2]; |
2761 | 0 | aDest = *destAlphaPtr; |
2762 | | |
2763 | | //----- source color |
2764 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
2765 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
2766 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
2767 | | |
2768 | | //----- source alpha |
2769 | 0 | aSrc = div255(pipe->aInput * shape); |
2770 | | |
2771 | | //----- result alpha and non-isolated group element correction |
2772 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2773 | 0 | alpha0 = *alpha0Ptr++; |
2774 | 0 | alphaI = (Guchar)(aResult + alpha0 - div255(aResult * alpha0)); |
2775 | | |
2776 | | //----- result color |
2777 | 0 | if (alphaI == 0) { |
2778 | 0 | cResult0 = 0; |
2779 | 0 | cResult1 = 0; |
2780 | 0 | cResult2 = 0; |
2781 | 0 | } else { |
2782 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2783 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2784 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2785 | 0 | } |
2786 | | |
2787 | | //----- write destination pixel |
2788 | 0 | destColorPtr[0] = cResult0; |
2789 | 0 | destColorPtr[1] = cResult1; |
2790 | 0 | destColorPtr[2] = cResult2; |
2791 | 0 | destColorPtr += 3; |
2792 | 0 | *destAlphaPtr++ = aResult; |
2793 | |
|
2794 | 0 | cSrcPtr += cSrcStride; |
2795 | 0 | ++shapePtr; |
2796 | 0 | } // for (x ...) |
2797 | |
|
2798 | 0 | updateModX(lastX); |
2799 | 0 | } |
2800 | | |
2801 | | void Splash::pipeRunNonIsoBGR8(SplashPipe *pipe, int x0, int x1, int y, |
2802 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2803 | 0 | Guchar shape, aSrc, aDest, alphaI, alpha0, aResult; |
2804 | 0 | Guchar cSrc0, cSrc1, cSrc2; |
2805 | 0 | Guchar cDest0, cDest1, cDest2; |
2806 | 0 | Guchar cResult0, cResult1, cResult2; |
2807 | 0 | SplashColorPtr destColorPtr; |
2808 | 0 | Guchar *destAlphaPtr; |
2809 | 0 | Guchar *alpha0Ptr; |
2810 | 0 | int cSrcStride, x, lastX; |
2811 | |
|
2812 | 0 | if (cSrcPtr) { |
2813 | 0 | cSrcStride = 3; |
2814 | 0 | } else { |
2815 | 0 | cSrcPtr = pipe->cSrcVal; |
2816 | 0 | cSrcStride = 0; |
2817 | 0 | } |
2818 | 0 | for (; x0 <= x1; ++x0) { |
2819 | 0 | if (*shapePtr) { |
2820 | 0 | break; |
2821 | 0 | } |
2822 | 0 | cSrcPtr += cSrcStride; |
2823 | 0 | ++shapePtr; |
2824 | 0 | } |
2825 | 0 | if (x0 > x1) { |
2826 | 0 | return; |
2827 | 0 | } |
2828 | 0 | updateModX(x0); |
2829 | 0 | updateModY(y); |
2830 | 0 | lastX = x0; |
2831 | |
|
2832 | 0 | useDestRow(y); |
2833 | |
|
2834 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * 3]; |
2835 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2836 | 0 | alpha0Ptr = &groupBackBitmap->alpha[(groupBackY + y) |
2837 | 0 | * groupBackBitmap->alphaRowSize + |
2838 | 0 | (groupBackX + x0)]; |
2839 | |
|
2840 | 0 | for (x = x0; x <= x1; ++x) { |
2841 | | |
2842 | | //----- shape |
2843 | 0 | shape = *shapePtr; |
2844 | 0 | if (!shape) { |
2845 | 0 | destColorPtr += 3; |
2846 | 0 | ++destAlphaPtr; |
2847 | 0 | ++alpha0Ptr; |
2848 | 0 | cSrcPtr += cSrcStride; |
2849 | 0 | ++shapePtr; |
2850 | 0 | continue; |
2851 | 0 | } |
2852 | 0 | lastX = x; |
2853 | | |
2854 | | //----- read destination pixel |
2855 | 0 | cDest0 = destColorPtr[2]; |
2856 | 0 | cDest1 = destColorPtr[1]; |
2857 | 0 | cDest2 = destColorPtr[0]; |
2858 | 0 | aDest = *destAlphaPtr; |
2859 | | |
2860 | | //----- source color |
2861 | 0 | cSrc0 = state->rgbTransferR[cSrcPtr[0]]; |
2862 | 0 | cSrc1 = state->rgbTransferG[cSrcPtr[1]]; |
2863 | 0 | cSrc2 = state->rgbTransferB[cSrcPtr[2]]; |
2864 | | |
2865 | | //----- source alpha |
2866 | 0 | aSrc = div255(pipe->aInput * shape); |
2867 | | |
2868 | | //----- result alpha and non-isolated group element correction |
2869 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2870 | 0 | alpha0 = *alpha0Ptr++; |
2871 | 0 | alphaI = (Guchar)(aResult + alpha0 - div255(aResult * alpha0)); |
2872 | | |
2873 | | //----- result color |
2874 | 0 | if (alphaI == 0) { |
2875 | 0 | cResult0 = 0; |
2876 | 0 | cResult1 = 0; |
2877 | 0 | cResult2 = 0; |
2878 | 0 | } else { |
2879 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2880 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2881 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
2882 | 0 | } |
2883 | | |
2884 | | //----- write destination pixel |
2885 | 0 | destColorPtr[0] = cResult2; |
2886 | 0 | destColorPtr[1] = cResult1; |
2887 | 0 | destColorPtr[2] = cResult0; |
2888 | 0 | destColorPtr += 3; |
2889 | 0 | *destAlphaPtr++ = aResult; |
2890 | |
|
2891 | 0 | cSrcPtr += cSrcStride; |
2892 | 0 | ++shapePtr; |
2893 | 0 | } // for (x ...) |
2894 | |
|
2895 | 0 | updateModX(lastX); |
2896 | 0 | } |
2897 | | |
2898 | | #if SPLASH_CMYK |
2899 | | void Splash::pipeRunNonIsoCMYK8(SplashPipe *pipe, int x0, int x1, int y, |
2900 | 0 | Guchar *shapePtr, SplashColorPtr cSrcPtr) { |
2901 | 0 | Guchar shape, aSrc, aDest, alphaI, alpha0, aResult, aPrev; |
2902 | 0 | Guchar cSrc0, cSrc1, cSrc2, cSrc3; |
2903 | 0 | Guchar cDest0, cDest1, cDest2, cDest3; |
2904 | 0 | Guchar cResult0, cResult1, cResult2, cResult3; |
2905 | 0 | SplashColorPtr destColorPtr; |
2906 | 0 | Guchar *destAlphaPtr; |
2907 | 0 | Guchar *alpha0Ptr; |
2908 | 0 | int cSrcStride, x, lastX; |
2909 | |
|
2910 | 0 | if (cSrcPtr) { |
2911 | 0 | cSrcStride = 4; |
2912 | 0 | } else { |
2913 | 0 | cSrcPtr = pipe->cSrcVal; |
2914 | 0 | cSrcStride = 0; |
2915 | 0 | } |
2916 | 0 | for (; x0 <= x1; ++x0) { |
2917 | 0 | if (*shapePtr) { |
2918 | 0 | break; |
2919 | 0 | } |
2920 | 0 | cSrcPtr += cSrcStride; |
2921 | 0 | ++shapePtr; |
2922 | 0 | } |
2923 | 0 | if (x0 > x1) { |
2924 | 0 | return; |
2925 | 0 | } |
2926 | 0 | updateModX(x0); |
2927 | 0 | updateModY(y); |
2928 | 0 | lastX = x0; |
2929 | |
|
2930 | 0 | useDestRow(y); |
2931 | |
|
2932 | 0 | destColorPtr = &bitmap->data[y * bitmap->rowSize + x0 * 4]; |
2933 | 0 | destAlphaPtr = &bitmap->alpha[y * bitmap->alphaRowSize + x0]; |
2934 | 0 | alpha0Ptr = &groupBackBitmap->alpha[(groupBackY + y) |
2935 | 0 | * groupBackBitmap->alphaRowSize + |
2936 | 0 | (groupBackX + x0)]; |
2937 | |
|
2938 | 0 | for (x = x0; x <= x1; ++x) { |
2939 | | |
2940 | | //----- shape |
2941 | 0 | shape = *shapePtr; |
2942 | 0 | if (!shape) { |
2943 | 0 | destColorPtr += 4; |
2944 | 0 | ++destAlphaPtr; |
2945 | 0 | ++alpha0Ptr; |
2946 | 0 | cSrcPtr += cSrcStride; |
2947 | 0 | ++shapePtr; |
2948 | 0 | continue; |
2949 | 0 | } |
2950 | 0 | lastX = x; |
2951 | | |
2952 | | //----- read destination pixel |
2953 | 0 | cDest0 = destColorPtr[0]; |
2954 | 0 | cDest1 = destColorPtr[1]; |
2955 | 0 | cDest2 = destColorPtr[2]; |
2956 | 0 | cDest3 = destColorPtr[3]; |
2957 | 0 | aDest = *destAlphaPtr; |
2958 | | |
2959 | | //----- overprint |
2960 | 0 | aPrev = (Guchar)(*alpha0Ptr + aDest - div255(*alpha0Ptr * aDest)); |
2961 | 0 | if (state->overprintMask & 0x01) { |
2962 | 0 | cSrc0 = state->cmykTransferC[cSrcPtr[0]]; |
2963 | 0 | } else { |
2964 | 0 | cSrc0 = div255(aPrev * cDest0); |
2965 | 0 | } |
2966 | 0 | if (state->overprintMask & 0x02) { |
2967 | 0 | cSrc1 = state->cmykTransferM[cSrcPtr[1]]; |
2968 | 0 | } else { |
2969 | 0 | cSrc1 = div255(aPrev * cDest1); |
2970 | 0 | } |
2971 | 0 | if (state->overprintMask & 0x04) { |
2972 | 0 | cSrc2 = state->cmykTransferY[cSrcPtr[2]]; |
2973 | 0 | } else { |
2974 | 0 | cSrc2 = div255(aPrev * cDest2); |
2975 | 0 | } |
2976 | 0 | if (state->overprintMask & 0x08) { |
2977 | 0 | cSrc3 = state->cmykTransferK[cSrcPtr[3]]; |
2978 | 0 | } else { |
2979 | 0 | cSrc3 = div255(aPrev * cDest3); |
2980 | 0 | } |
2981 | | |
2982 | | //----- source alpha |
2983 | 0 | aSrc = div255(pipe->aInput * shape); |
2984 | | |
2985 | | //----- result alpha and non-isolated group element correction |
2986 | 0 | aResult = (Guchar)(aSrc + aDest - div255(aSrc * aDest)); |
2987 | 0 | alpha0 = *alpha0Ptr++; |
2988 | 0 | alphaI = (Guchar)(aResult + alpha0 - div255(aResult * alpha0)); |
2989 | | |
2990 | | //----- result color |
2991 | 0 | if (alphaI == 0) { |
2992 | 0 | cResult0 = 0; |
2993 | 0 | cResult1 = 0; |
2994 | 0 | cResult2 = 0; |
2995 | 0 | cResult3 = 0; |
2996 | 0 | } else { |
2997 | 0 | cResult0 = (Guchar)(((alphaI - aSrc) * cDest0 + aSrc * cSrc0) / alphaI); |
2998 | 0 | cResult1 = (Guchar)(((alphaI - aSrc) * cDest1 + aSrc * cSrc1) / alphaI); |
2999 | 0 | cResult2 = (Guchar)(((alphaI - aSrc) * cDest2 + aSrc * cSrc2) / alphaI); |
3000 | 0 | cResult3 = (Guchar)(((alphaI - aSrc) * cDest3 + aSrc * cSrc3) / alphaI); |
3001 | 0 | } |
3002 | | |
3003 | | //----- write destination pixel |
3004 | 0 | destColorPtr[0] = cResult0; |
3005 | 0 | destColorPtr[1] = cResult1; |
3006 | 0 | destColorPtr[2] = cResult2; |
3007 | 0 | destColorPtr[3] = cResult3; |
3008 | 0 | destColorPtr += 4; |
3009 | 0 | *destAlphaPtr++ = aResult; |
3010 | |
|
3011 | 0 | cSrcPtr += cSrcStride; |
3012 | 0 | ++shapePtr; |
3013 | 0 | } // for (x ...) |
3014 | |
|
3015 | 0 | updateModX(lastX); |
3016 | 0 | } |
3017 | | #endif |
3018 | | |
3019 | | |
3020 | 0 | void Splash::useDestRow(int y) { |
3021 | 0 | int y0, y1, yy; |
3022 | |
|
3023 | 0 | if (groupDestInitMode == splashGroupDestPreInit) { |
3024 | 0 | return; |
3025 | 0 | } |
3026 | 0 | if (groupDestInitYMin > groupDestInitYMax) { |
3027 | 0 | y0 = y1 = y; |
3028 | 0 | groupDestInitYMin = groupDestInitYMax = y; |
3029 | 0 | } else if (y < groupDestInitYMin) { |
3030 | 0 | y0 = y; |
3031 | 0 | y1 = groupDestInitYMin - 1; |
3032 | 0 | groupDestInitYMin = y; |
3033 | 0 | } else if (y > groupDestInitYMax) { |
3034 | 0 | y0 = groupDestInitYMax + 1; |
3035 | 0 | y1 = y; |
3036 | 0 | groupDestInitYMax = y; |
3037 | 0 | } else { |
3038 | 0 | return; |
3039 | 0 | } |
3040 | 0 | for (yy = y0; yy <= y1; ++yy) { |
3041 | 0 | if (groupDestInitMode == splashGroupDestInitZero) { |
3042 | | // same as clear(color=0, alpha=0) |
3043 | 0 | memset(bitmap->data + bitmap->rowSize * yy, 0, |
3044 | 0 | bitmap->rowSize < 0 ? -bitmap->rowSize : bitmap->rowSize); |
3045 | 0 | if (bitmap->alpha) { |
3046 | 0 | memset(bitmap->alpha + bitmap->alphaRowSize * yy, 0, |
3047 | 0 | bitmap->alphaRowSize); |
3048 | 0 | } |
3049 | 0 | } else { // (groupDestInitMode == splashGroupDestInitCopy) |
3050 | | // same as blitTransparent |
3051 | 0 | copyGroupBackdropRow(yy); |
3052 | 0 | } |
3053 | 0 | } |
3054 | 0 | } |
3055 | | |
3056 | 0 | void Splash::copyGroupBackdropRow(int y) { |
3057 | 0 | SplashColorPtr p, q; |
3058 | 0 | Guchar mask, srcMask; |
3059 | 0 | int x; |
3060 | |
|
3061 | 0 | if (groupBackBitmap->mode != bitmap->mode) { |
3062 | 0 | return; |
3063 | 0 | } |
3064 | | |
3065 | 0 | if (bitmap->mode == splashModeMono1) { |
3066 | 0 | p = &bitmap->data[y * bitmap->rowSize]; |
3067 | 0 | mask = (Guchar)0x80; |
3068 | 0 | q = &groupBackBitmap->data[(groupBackY + y) * groupBackBitmap->rowSize |
3069 | 0 | + (groupBackX >> 3)]; |
3070 | 0 | srcMask = (Guchar)(0x80 >> (groupBackX & 7)); |
3071 | 0 | for (x = 0; x < bitmap->width; ++x) { |
3072 | 0 | if (*q & srcMask) { |
3073 | 0 | *p |= mask; |
3074 | 0 | } else { |
3075 | 0 | *p &= (Guchar)~mask; |
3076 | 0 | } |
3077 | 0 | if (!(mask = (Guchar)(mask >> 1))) { |
3078 | 0 | mask = 0x80; |
3079 | 0 | ++p; |
3080 | 0 | } |
3081 | 0 | if (!(srcMask = (Guchar)(srcMask >> 1))) { |
3082 | 0 | srcMask = 0x80; |
3083 | 0 | ++q; |
3084 | 0 | } |
3085 | 0 | } |
3086 | 0 | } else { |
3087 | 0 | p = &bitmap->data[y * bitmap->rowSize]; |
3088 | 0 | q = &groupBackBitmap->data[(groupBackY + y) * groupBackBitmap->rowSize |
3089 | 0 | + bitmapComps * groupBackX]; |
3090 | 0 | memcpy(p, q, bitmapComps * bitmap->width); |
3091 | 0 | } |
3092 | |
|
3093 | 0 | if (bitmap->alpha) { |
3094 | 0 | memset(&bitmap->alpha[y * bitmap->alphaRowSize], 0, bitmap->width); |
3095 | 0 | } |
3096 | 0 | } |
3097 | | |
3098 | | //------------------------------------------------------------------------ |
3099 | | |
3100 | | // Transform a point from user space to device space. |
3101 | | inline void Splash::transform(SplashCoord *matrix, |
3102 | | SplashCoord xi, SplashCoord yi, |
3103 | 0 | SplashCoord *xo, SplashCoord *yo) { |
3104 | | // [ m[0] m[1] 0 ] |
3105 | | // [xo yo 1] = [xi yi 1] * [ m[2] m[3] 0 ] |
3106 | | // [ m[4] m[5] 1 ] |
3107 | 0 | *xo = xi * matrix[0] + yi * matrix[2] + matrix[4]; |
3108 | 0 | *yo = xi * matrix[1] + yi * matrix[3] + matrix[5]; |
3109 | 0 | } |
3110 | | |
3111 | | //------------------------------------------------------------------------ |
3112 | | // SplashImageCache |
3113 | | //------------------------------------------------------------------------ |
3114 | | |
3115 | 0 | SplashImageCache::SplashImageCache() { |
3116 | 0 | tag = NULL; |
3117 | 0 | width = 0; |
3118 | 0 | height = 0; |
3119 | 0 | mode = splashModeRGB8; |
3120 | 0 | alpha = gFalse; |
3121 | 0 | interpolate = gFalse; |
3122 | 0 | colorData = NULL; |
3123 | 0 | alphaData = NULL; |
3124 | 0 | refCount = 1; |
3125 | 0 | } |
3126 | | |
3127 | 0 | SplashImageCache::~SplashImageCache() { |
3128 | 0 | if (tag) { |
3129 | 0 | delete tag; |
3130 | 0 | } |
3131 | 0 | gfree(colorData); |
3132 | 0 | gfree(alphaData); |
3133 | 0 | } |
3134 | | |
3135 | | GBool SplashImageCache::match(GString *aTag, int aWidth, int aHeight, |
3136 | | SplashColorMode aMode, GBool aAlpha, |
3137 | 0 | GBool aInterpolate) { |
3138 | 0 | return aTag && tag && !aTag->cmp(tag) && |
3139 | 0 | aWidth == width && aHeight == height && |
3140 | 0 | aMode == mode && aAlpha == alpha && |
3141 | 0 | aInterpolate == interpolate; |
3142 | 0 | } |
3143 | | |
3144 | | void SplashImageCache::reset(GString *aTag, int aWidth, int aHeight, |
3145 | | SplashColorMode aMode, GBool aAlpha, |
3146 | 0 | GBool aInterpolate) { |
3147 | 0 | if (tag) { |
3148 | 0 | delete tag; |
3149 | 0 | } |
3150 | 0 | if (aTag) { |
3151 | 0 | tag = aTag->copy(); |
3152 | 0 | } else { |
3153 | 0 | tag = NULL; |
3154 | 0 | } |
3155 | 0 | width = aWidth; |
3156 | 0 | height = aHeight; |
3157 | 0 | mode = aMode; |
3158 | 0 | alpha = aAlpha; |
3159 | 0 | interpolate = aInterpolate; |
3160 | 0 | gfree(colorData); |
3161 | 0 | colorData = NULL; |
3162 | 0 | gfree(alphaData); |
3163 | 0 | alphaData = NULL; |
3164 | 0 | } |
3165 | | |
3166 | 0 | void SplashImageCache::incRefCount() { |
3167 | 0 | ++refCount; |
3168 | 0 | } |
3169 | | |
3170 | 0 | void SplashImageCache::decRefCount() { |
3171 | 0 | --refCount; |
3172 | 0 | if (refCount == 0) { |
3173 | 0 | delete this; |
3174 | 0 | } |
3175 | 0 | } |
3176 | | |
3177 | | //------------------------------------------------------------------------ |
3178 | | // ImageScaler |
3179 | | //------------------------------------------------------------------------ |
3180 | | |
3181 | | // Abstract base class. |
3182 | | class ImageScaler { |
3183 | | public: |
3184 | | |
3185 | 0 | ImageScaler() {} |
3186 | 0 | virtual ~ImageScaler() {} |
3187 | | |
3188 | | // Compute the next line of the scaled image. This can be called up |
3189 | | // to [scaledHeight] times. |
3190 | | virtual void nextLine() = 0; |
3191 | | |
3192 | | // Retrieve the color and alpha data generated by the most recent |
3193 | | // call to nextLine(). |
3194 | | virtual Guchar *colorData() = 0; |
3195 | | virtual Guchar *alphaData() = 0; |
3196 | | }; |
3197 | | |
3198 | | //------------------------------------------------------------------------ |
3199 | | // BasicImageScaler |
3200 | | //------------------------------------------------------------------------ |
3201 | | |
3202 | | // The actual image scaler. |
3203 | | class BasicImageScaler: public ImageScaler { |
3204 | | public: |
3205 | | |
3206 | | BasicImageScaler(SplashImageSource aSrc, void *aSrcData, |
3207 | | int aSrcWidth, int aSrcHeight, int aNComps, GBool aHasAlpha, |
3208 | | int aScaledWidth, int aScaledHeight, GBool aInterpolate); |
3209 | | virtual ~BasicImageScaler(); |
3210 | | virtual void nextLine(); |
3211 | 0 | virtual Guchar *colorData() { return colorLine; } |
3212 | 0 | virtual Guchar *alphaData() { return alphaLine; } |
3213 | | |
3214 | | protected: |
3215 | | |
3216 | | void vertDownscaleHorizDownscale(); |
3217 | | void vertDownscaleHorizUpscaleNoInterp(); |
3218 | | void vertDownscaleHorizUpscaleInterp(); |
3219 | | void vertUpscaleHorizDownscaleNoInterp(); |
3220 | | void vertUpscaleHorizDownscaleInterp(); |
3221 | | void vertUpscaleHorizUpscaleNoInterp(); |
3222 | | void vertUpscaleHorizUpscaleInterp(); |
3223 | | |
3224 | | // source image data function |
3225 | | SplashImageSource src; |
3226 | | void *srcData; |
3227 | | |
3228 | | // source image size |
3229 | | int srcWidth; |
3230 | | int srcHeight; |
3231 | | |
3232 | | // scaled image size |
3233 | | int scaledWidth; |
3234 | | int scaledHeight; |
3235 | | |
3236 | | // number of color and alpha components |
3237 | | int nComps; |
3238 | | GBool hasAlpha; |
3239 | | |
3240 | | // params/state for vertical scaling |
3241 | | int yp, yq; |
3242 | | int yt, yn; |
3243 | | int ySrcCur, yScaledCur; |
3244 | | SplashCoord yInvScale; |
3245 | | |
3246 | | // params for horizontal scaling |
3247 | | int xp, xq; |
3248 | | SplashCoord xInvScale; |
3249 | | |
3250 | | // scaling function |
3251 | | void (BasicImageScaler::*scalingFunc)(); |
3252 | | |
3253 | | // temporary buffers for vertical scaling |
3254 | | Guchar *colorTmpBuf0; |
3255 | | Guchar *colorTmpBuf1; |
3256 | | Guchar *colorTmpBuf2; |
3257 | | Guchar *alphaTmpBuf0; |
3258 | | Guchar *alphaTmpBuf1; |
3259 | | Guchar *alphaTmpBuf2; |
3260 | | Guint *colorAccBuf; |
3261 | | Guint *alphaAccBuf; |
3262 | | |
3263 | | // output of horizontal scaling |
3264 | | Guchar *colorLine; |
3265 | | Guchar *alphaLine; |
3266 | | }; |
3267 | | |
3268 | | BasicImageScaler::BasicImageScaler(SplashImageSource aSrc, void *aSrcData, |
3269 | | int aSrcWidth, int aSrcHeight, |
3270 | | int aNComps, GBool aHasAlpha, |
3271 | | int aScaledWidth, int aScaledHeight, |
3272 | 0 | GBool aInterpolate) { |
3273 | 0 | colorTmpBuf0 = NULL; |
3274 | 0 | colorTmpBuf1 = NULL; |
3275 | 0 | colorTmpBuf2 = NULL; |
3276 | 0 | alphaTmpBuf0 = NULL; |
3277 | 0 | alphaTmpBuf1 = NULL; |
3278 | 0 | alphaTmpBuf2 = NULL; |
3279 | 0 | colorAccBuf = NULL; |
3280 | 0 | alphaAccBuf = NULL; |
3281 | 0 | colorLine = NULL; |
3282 | 0 | alphaLine = NULL; |
3283 | |
|
3284 | 0 | src = aSrc; |
3285 | 0 | srcData = aSrcData; |
3286 | 0 | srcWidth = aSrcWidth; |
3287 | 0 | srcHeight = aSrcHeight; |
3288 | 0 | scaledWidth = aScaledWidth; |
3289 | 0 | scaledHeight = aScaledHeight; |
3290 | 0 | nComps = aNComps; |
3291 | 0 | hasAlpha = aHasAlpha; |
3292 | | |
3293 | | // select scaling function; allocate buffers |
3294 | 0 | if (scaledHeight <= srcHeight) { |
3295 | | // vertical downscaling |
3296 | 0 | yp = srcHeight / scaledHeight; |
3297 | 0 | yq = srcHeight % scaledHeight; |
3298 | 0 | yt = 0; |
3299 | 0 | colorTmpBuf0 = (Guchar *)gmallocn(srcWidth, nComps); |
3300 | 0 | colorAccBuf = (Guint *)gmallocn(srcWidth, nComps * (int)sizeof(Guint)); |
3301 | 0 | if (hasAlpha) { |
3302 | 0 | alphaTmpBuf0 = (Guchar *)gmalloc(srcWidth); |
3303 | 0 | alphaAccBuf = (Guint *)gmallocn(srcWidth, sizeof(Guint)); |
3304 | 0 | } |
3305 | 0 | if (scaledWidth <= srcWidth) { |
3306 | 0 | scalingFunc = &BasicImageScaler::vertDownscaleHorizDownscale; |
3307 | 0 | } else { |
3308 | 0 | if (aInterpolate) { |
3309 | 0 | scalingFunc = &BasicImageScaler::vertDownscaleHorizUpscaleInterp; |
3310 | 0 | } else { |
3311 | 0 | scalingFunc = &BasicImageScaler::vertDownscaleHorizUpscaleNoInterp; |
3312 | 0 | } |
3313 | 0 | } |
3314 | 0 | } else { |
3315 | | // vertical upscaling |
3316 | 0 | yp = scaledHeight / srcHeight; |
3317 | 0 | yq = scaledHeight % srcHeight; |
3318 | 0 | yt = 0; |
3319 | 0 | yn = 0; |
3320 | 0 | if (aInterpolate) { |
3321 | 0 | yInvScale = (SplashCoord)srcHeight / (SplashCoord)scaledHeight; |
3322 | 0 | colorTmpBuf0 = (Guchar *)gmallocn(srcWidth, nComps); |
3323 | 0 | colorTmpBuf1 = (Guchar *)gmallocn(srcWidth, nComps); |
3324 | 0 | if (hasAlpha) { |
3325 | 0 | alphaTmpBuf0 = (Guchar *)gmalloc(srcWidth); |
3326 | 0 | alphaTmpBuf1 = (Guchar *)gmalloc(srcWidth); |
3327 | 0 | } |
3328 | 0 | ySrcCur = 0; |
3329 | 0 | yScaledCur = 0; |
3330 | 0 | if (scaledWidth <= srcWidth) { |
3331 | 0 | scalingFunc = &BasicImageScaler::vertUpscaleHorizDownscaleInterp; |
3332 | 0 | } else { |
3333 | 0 | colorTmpBuf2 = (Guchar *)gmallocn(srcWidth, nComps); |
3334 | 0 | if (hasAlpha) { |
3335 | 0 | alphaTmpBuf2 = (Guchar *)gmalloc(srcWidth); |
3336 | 0 | } |
3337 | 0 | scalingFunc = &BasicImageScaler::vertUpscaleHorizUpscaleInterp; |
3338 | 0 | } |
3339 | 0 | } else { |
3340 | 0 | colorTmpBuf0 = (Guchar *)gmallocn(srcWidth, nComps); |
3341 | 0 | if (hasAlpha) { |
3342 | 0 | alphaTmpBuf0 = (Guchar *)gmalloc(srcWidth); |
3343 | 0 | } |
3344 | 0 | if (scaledWidth <= srcWidth) { |
3345 | 0 | scalingFunc = &BasicImageScaler::vertUpscaleHorizDownscaleNoInterp; |
3346 | 0 | } else { |
3347 | 0 | scalingFunc = &BasicImageScaler::vertUpscaleHorizUpscaleNoInterp; |
3348 | 0 | } |
3349 | 0 | } |
3350 | 0 | } |
3351 | 0 | if (scaledWidth <= srcWidth) { |
3352 | 0 | xp = srcWidth / scaledWidth; |
3353 | 0 | xq = srcWidth % scaledWidth; |
3354 | 0 | } else { |
3355 | 0 | xp = scaledWidth / srcWidth; |
3356 | 0 | xq = scaledWidth % srcWidth; |
3357 | 0 | if (aInterpolate) { |
3358 | 0 | xInvScale = (SplashCoord)srcWidth / (SplashCoord)scaledWidth; |
3359 | 0 | } |
3360 | 0 | } |
3361 | 0 | colorLine = (Guchar *)gmallocn(scaledWidth, nComps); |
3362 | 0 | if (hasAlpha) { |
3363 | 0 | alphaLine = (Guchar *)gmalloc(scaledWidth); |
3364 | 0 | } |
3365 | 0 | } |
3366 | | |
3367 | 0 | BasicImageScaler::~BasicImageScaler() { |
3368 | 0 | gfree(colorTmpBuf0); |
3369 | 0 | gfree(colorTmpBuf1); |
3370 | 0 | gfree(colorTmpBuf2); |
3371 | 0 | gfree(alphaTmpBuf0); |
3372 | 0 | gfree(alphaTmpBuf1); |
3373 | 0 | gfree(alphaTmpBuf2); |
3374 | 0 | gfree(colorAccBuf); |
3375 | 0 | gfree(alphaAccBuf); |
3376 | 0 | gfree(colorLine); |
3377 | 0 | gfree(alphaLine); |
3378 | 0 | } |
3379 | | |
3380 | 0 | void BasicImageScaler::nextLine() { |
3381 | 0 | (this->*scalingFunc)(); |
3382 | 0 | } |
3383 | | |
3384 | 0 | void BasicImageScaler::vertDownscaleHorizDownscale() { |
3385 | | //--- vert downscale |
3386 | 0 | int yStep = yp; |
3387 | 0 | yt += yq; |
3388 | 0 | if (yt >= scaledHeight) { |
3389 | 0 | yt -= scaledHeight; |
3390 | 0 | ++yStep; |
3391 | 0 | } |
3392 | 0 | memset(colorAccBuf, 0, (srcWidth * nComps) * sizeof(Guint)); |
3393 | 0 | if (hasAlpha) { |
3394 | 0 | memset(alphaAccBuf, 0, srcWidth * sizeof(Guint)); |
3395 | 0 | } |
3396 | 0 | int nRowComps = srcWidth * nComps; |
3397 | 0 | for (int i = 0; i < yStep; ++i) { |
3398 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3399 | 0 | for (int j = 0; j < nRowComps; ++j) { |
3400 | 0 | colorAccBuf[j] += colorTmpBuf0[j]; |
3401 | 0 | } |
3402 | 0 | if (hasAlpha) { |
3403 | 0 | for (int j = 0; j < srcWidth; ++j) { |
3404 | 0 | alphaAccBuf[j] += alphaTmpBuf0[j]; |
3405 | 0 | } |
3406 | 0 | } |
3407 | 0 | } |
3408 | | |
3409 | | //--- horiz downscale |
3410 | 0 | int colorAcc[splashMaxColorComps]; |
3411 | 0 | int xt = 0; |
3412 | 0 | int unscaledColorIdx = 0; |
3413 | 0 | int unscaledAlphaIdx = 0; |
3414 | 0 | int scaledColorIdx = 0; |
3415 | |
|
3416 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
3417 | 0 | int xStep = xp; |
3418 | 0 | xt += xq; |
3419 | 0 | if (xt >= scaledWidth) { |
3420 | 0 | xt -= scaledWidth; |
3421 | 0 | ++xStep; |
3422 | 0 | } |
3423 | |
|
3424 | 0 | for (int j = 0; j < nComps; ++j) { |
3425 | 0 | colorAcc[j] = 0; |
3426 | 0 | } |
3427 | 0 | for (int i = 0; i < xStep; ++i) { |
3428 | 0 | for (int j = 0; j < nComps; ++j) { |
3429 | 0 | colorAcc[j] += colorAccBuf[unscaledColorIdx + j]; |
3430 | 0 | } |
3431 | 0 | unscaledColorIdx += nComps; |
3432 | 0 | } |
3433 | 0 | int nPixels = yStep * xStep; |
3434 | 0 | for (int j = 0; j < nComps; ++j) { |
3435 | 0 | colorLine[scaledColorIdx + j] = (Guchar)(colorAcc[j] / nPixels); |
3436 | 0 | } |
3437 | 0 | scaledColorIdx += nComps; |
3438 | |
|
3439 | 0 | if (hasAlpha) { |
3440 | 0 | int alphaAcc = 0; |
3441 | 0 | for (int i = 0; i < xStep; ++i) { |
3442 | 0 | alphaAcc += alphaAccBuf[unscaledAlphaIdx]; |
3443 | 0 | ++unscaledAlphaIdx; |
3444 | 0 | } |
3445 | 0 | alphaLine[scaledIdx] = (Guchar)(alphaAcc / nPixels); |
3446 | 0 | } |
3447 | 0 | } |
3448 | 0 | } |
3449 | | |
3450 | 0 | void BasicImageScaler::vertDownscaleHorizUpscaleNoInterp() { |
3451 | | //--- vert downscale |
3452 | 0 | int yStep = yp; |
3453 | 0 | yt += yq; |
3454 | 0 | if (yt >= scaledHeight) { |
3455 | 0 | yt -= scaledHeight; |
3456 | 0 | ++yStep; |
3457 | 0 | } |
3458 | 0 | memset(colorAccBuf, 0, (srcWidth * nComps) * sizeof(Guint)); |
3459 | 0 | if (hasAlpha) { |
3460 | 0 | memset(alphaAccBuf, 0, srcWidth * sizeof(Guint)); |
3461 | 0 | } |
3462 | 0 | int nRowComps = srcWidth * nComps; |
3463 | 0 | for (int i = 0; i < yStep; ++i) { |
3464 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3465 | 0 | for (int j = 0; j < nRowComps; ++j) { |
3466 | 0 | colorAccBuf[j] += colorTmpBuf0[j]; |
3467 | 0 | } |
3468 | 0 | if (hasAlpha) { |
3469 | 0 | for (int j = 0; j < srcWidth; ++j) { |
3470 | 0 | alphaAccBuf[j] += alphaTmpBuf0[j]; |
3471 | 0 | } |
3472 | 0 | } |
3473 | 0 | } |
3474 | | |
3475 | | //--- horiz upscale |
3476 | 0 | Guchar colorBuf[splashMaxColorComps]; |
3477 | 0 | int xt = 0; |
3478 | 0 | int scaledColorIdx = 0; |
3479 | 0 | int srcColorIdx = 0; |
3480 | 0 | int scaledAlphaIdx = 0; |
3481 | 0 | for (int srcIdx = 0; srcIdx < srcWidth; ++srcIdx) { |
3482 | 0 | int xStep = xp; |
3483 | 0 | xt += xq; |
3484 | 0 | if (xt >= srcWidth) { |
3485 | 0 | xt -= srcWidth; |
3486 | 0 | ++xStep; |
3487 | 0 | } |
3488 | 0 | for (int j = 0; j < nComps; ++j) { |
3489 | 0 | colorBuf[j] = (Guchar)(colorAccBuf[srcColorIdx + j] / yStep); |
3490 | 0 | } |
3491 | 0 | srcColorIdx += nComps; |
3492 | 0 | for (int i = 0; i < xStep; ++i) { |
3493 | 0 | for (int j = 0; j < nComps; ++j) { |
3494 | 0 | colorLine[scaledColorIdx + j] = colorBuf[j]; |
3495 | 0 | } |
3496 | 0 | scaledColorIdx += nComps; |
3497 | 0 | } |
3498 | 0 | if (hasAlpha) { |
3499 | 0 | Guchar alphaBuf = (Guchar)(alphaAccBuf[srcIdx] / yStep); |
3500 | 0 | for (int i = 0; i < xStep; ++i) { |
3501 | 0 | alphaLine[scaledAlphaIdx] = alphaBuf; |
3502 | 0 | ++scaledAlphaIdx; |
3503 | 0 | } |
3504 | 0 | } |
3505 | 0 | } |
3506 | 0 | } |
3507 | | |
3508 | 0 | void BasicImageScaler::vertDownscaleHorizUpscaleInterp() { |
3509 | | //--- vert downscale |
3510 | 0 | int yStep = yp; |
3511 | 0 | yt += yq; |
3512 | 0 | if (yt >= scaledHeight) { |
3513 | 0 | yt -= scaledHeight; |
3514 | 0 | ++yStep; |
3515 | 0 | } |
3516 | 0 | memset(colorAccBuf, 0, (srcWidth * nComps) * sizeof(Guint)); |
3517 | 0 | if (hasAlpha) { |
3518 | 0 | memset(alphaAccBuf, 0, srcWidth * sizeof(Guint)); |
3519 | 0 | } |
3520 | 0 | int nRowComps = srcWidth * nComps; |
3521 | 0 | for (int i = 0; i < yStep; ++i) { |
3522 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3523 | 0 | for (int j = 0; j < nRowComps; ++j) { |
3524 | 0 | colorAccBuf[j] += colorTmpBuf0[j]; |
3525 | 0 | } |
3526 | 0 | if (hasAlpha) { |
3527 | 0 | for (int j = 0; j < srcWidth; ++j) { |
3528 | 0 | alphaAccBuf[j] += alphaTmpBuf0[j]; |
3529 | 0 | } |
3530 | 0 | } |
3531 | 0 | } |
3532 | 0 | for (int j = 0; j < srcWidth * nComps; ++j) { |
3533 | 0 | colorAccBuf[j] /= yStep; |
3534 | 0 | } |
3535 | 0 | if (hasAlpha) { |
3536 | 0 | for (int j = 0; j < srcWidth; ++j) { |
3537 | 0 | alphaAccBuf[j] /= yStep; |
3538 | 0 | } |
3539 | 0 | } |
3540 | | |
3541 | | //--- horiz upscale |
3542 | 0 | int scaledColorIdx = 0; |
3543 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
3544 | 0 | SplashCoord xs = ((SplashCoord)scaledIdx + 0.5) * xInvScale; |
3545 | 0 | int x0 = splashFloor(xs - 0.5); |
3546 | 0 | int x1 = x0 + 1; |
3547 | 0 | SplashCoord s0 = (SplashCoord)x1 + 0.5 - xs; |
3548 | 0 | SplashCoord s1 = (SplashCoord)1 - s0; |
3549 | 0 | if (x0 < 0) { |
3550 | 0 | x0 = 0; |
3551 | 0 | } |
3552 | 0 | if (x1 >= srcWidth) { |
3553 | 0 | x1 = srcWidth - 1; |
3554 | 0 | } |
3555 | 0 | for (int j = 0; j < nComps; ++j) { |
3556 | 0 | colorLine[scaledColorIdx + j] = |
3557 | 0 | (Guchar)(int)(s0 * colorAccBuf[x0 * nComps + j] + |
3558 | 0 | s1 * colorAccBuf[x1 * nComps + j]); |
3559 | 0 | } |
3560 | 0 | scaledColorIdx += nComps; |
3561 | 0 | if (hasAlpha) { |
3562 | 0 | alphaLine[scaledIdx] = (Guchar)(int)(s0 * alphaAccBuf[x0] + |
3563 | 0 | s1 * alphaAccBuf[x1]); |
3564 | 0 | } |
3565 | 0 | } |
3566 | 0 | } |
3567 | | |
3568 | 0 | void BasicImageScaler::vertUpscaleHorizDownscaleNoInterp() { |
3569 | | //--- vert upscale |
3570 | 0 | if (yn == 0) { |
3571 | 0 | yn = yp; |
3572 | 0 | yt += yq; |
3573 | 0 | if (yt >= srcHeight) { |
3574 | 0 | yt -= srcHeight; |
3575 | 0 | ++yn; |
3576 | 0 | } |
3577 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3578 | 0 | } |
3579 | 0 | --yn; |
3580 | | |
3581 | | //--- horiz downscale |
3582 | 0 | int colorAcc[splashMaxColorComps]; |
3583 | 0 | int xt = 0; |
3584 | 0 | int unscaledColorIdx = 0; |
3585 | 0 | int unscaledAlphaIdx = 0; |
3586 | 0 | int scaledColorIdx = 0; |
3587 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
3588 | 0 | int xStep = xp; |
3589 | 0 | xt += xq; |
3590 | 0 | if (xt >= scaledWidth) { |
3591 | 0 | xt -= scaledWidth; |
3592 | 0 | ++xStep; |
3593 | 0 | } |
3594 | |
|
3595 | 0 | for (int j = 0; j < nComps; ++j) { |
3596 | 0 | colorAcc[j] = 0; |
3597 | 0 | } |
3598 | 0 | for (int i = 0; i < xStep; ++i) { |
3599 | 0 | for (int j = 0; j < nComps; ++j) { |
3600 | 0 | colorAcc[j] += colorTmpBuf0[unscaledColorIdx + j]; |
3601 | 0 | } |
3602 | 0 | unscaledColorIdx += nComps; |
3603 | 0 | } |
3604 | 0 | for (int j = 0; j < nComps; ++j) { |
3605 | 0 | colorLine[scaledColorIdx + j] = (Guchar)(colorAcc[j] / xStep); |
3606 | 0 | } |
3607 | 0 | scaledColorIdx += nComps; |
3608 | |
|
3609 | 0 | if (hasAlpha) { |
3610 | 0 | int alphaAcc = 0; |
3611 | 0 | for (int i = 0; i < xStep; ++i) { |
3612 | 0 | alphaAcc += alphaTmpBuf0[unscaledAlphaIdx]; |
3613 | 0 | ++unscaledAlphaIdx; |
3614 | 0 | } |
3615 | 0 | alphaLine[scaledIdx] = (Guchar)(alphaAcc / xStep); |
3616 | 0 | } |
3617 | 0 | } |
3618 | 0 | } |
3619 | | |
3620 | 0 | void BasicImageScaler::vertUpscaleHorizDownscaleInterp() { |
3621 | | //--- vert upscale |
3622 | 0 | if (ySrcCur == 0) { |
3623 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3624 | 0 | (*src)(srcData, colorTmpBuf1, alphaTmpBuf1); |
3625 | 0 | ySrcCur = 1; |
3626 | 0 | } |
3627 | 0 | SplashCoord ys = ((SplashCoord)yScaledCur + 0.5) * yInvScale; |
3628 | 0 | int y0 = splashFloor(ys - 0.5); |
3629 | 0 | int y1 = y0 + 1; |
3630 | 0 | SplashCoord vs0 = (SplashCoord)y1 + 0.5 - ys; |
3631 | 0 | SplashCoord vs1 = (SplashCoord)1 - vs0; |
3632 | 0 | if (y1 > ySrcCur && ySrcCur < srcHeight - 1) { |
3633 | 0 | Guchar *t = colorTmpBuf0; |
3634 | 0 | colorTmpBuf0 = colorTmpBuf1; |
3635 | 0 | colorTmpBuf1 = t; |
3636 | 0 | if (hasAlpha) { |
3637 | 0 | t = alphaTmpBuf0; |
3638 | 0 | alphaTmpBuf0 = alphaTmpBuf1; |
3639 | 0 | alphaTmpBuf1 = t; |
3640 | 0 | } |
3641 | 0 | (*src)(srcData, colorTmpBuf1, alphaTmpBuf1); |
3642 | 0 | ++ySrcCur; |
3643 | 0 | } |
3644 | 0 | Guchar *color0 = colorTmpBuf0; |
3645 | 0 | Guchar *color1 = colorTmpBuf1; |
3646 | 0 | Guchar *alpha0 = alphaTmpBuf0; |
3647 | 0 | Guchar *alpha1 = alphaTmpBuf1; |
3648 | 0 | if (y0 < 0) { |
3649 | 0 | y0 = 0; |
3650 | 0 | color1 = color0; |
3651 | 0 | alpha1 = alpha0; |
3652 | 0 | } |
3653 | 0 | if (y1 >= srcHeight) { |
3654 | 0 | y1 = srcHeight - 1; |
3655 | 0 | color0 = color1; |
3656 | 0 | alpha0 = alpha1; |
3657 | 0 | } |
3658 | 0 | ++yScaledCur; |
3659 | | |
3660 | | //--- horiz downscale |
3661 | 0 | int colorAcc[splashMaxColorComps]; |
3662 | 0 | int xt = 0; |
3663 | 0 | int unscaledColorIdx = 0; |
3664 | 0 | int unscaledAlphaIdx = 0; |
3665 | 0 | int scaledColorIdx = 0; |
3666 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
3667 | 0 | int xStep = xp; |
3668 | 0 | xt += xq; |
3669 | 0 | if (xt >= scaledWidth) { |
3670 | 0 | xt -= scaledWidth; |
3671 | 0 | ++xStep; |
3672 | 0 | } |
3673 | |
|
3674 | 0 | for (int j = 0; j < nComps; ++j) { |
3675 | 0 | colorAcc[j] = 0; |
3676 | 0 | } |
3677 | 0 | for (int i = 0; i < xStep; ++i) { |
3678 | 0 | for (int j = 0; j < nComps; ++j) { |
3679 | 0 | colorAcc[j] += (int)(vs0 * (int)color0[unscaledColorIdx + j] + |
3680 | 0 | vs1 * (int)color1[unscaledColorIdx + j]); |
3681 | 0 | } |
3682 | 0 | unscaledColorIdx += nComps; |
3683 | 0 | } |
3684 | 0 | for (int j = 0; j < nComps; ++j) { |
3685 | 0 | colorLine[scaledColorIdx + j] = (Guchar)(colorAcc[j] / xStep); |
3686 | 0 | } |
3687 | 0 | scaledColorIdx += nComps; |
3688 | |
|
3689 | 0 | if (hasAlpha) { |
3690 | 0 | int alphaAcc = 0; |
3691 | 0 | for (int i = 0; i < xStep; ++i) { |
3692 | 0 | alphaAcc += (int)(vs0 * (int)alpha0[unscaledAlphaIdx] + |
3693 | 0 | vs1 * (int)alpha1[unscaledAlphaIdx]); |
3694 | 0 | ++unscaledAlphaIdx; |
3695 | 0 | } |
3696 | 0 | alphaLine[scaledIdx] = (Guchar)(alphaAcc / xStep); |
3697 | 0 | } |
3698 | 0 | } |
3699 | 0 | } |
3700 | | |
3701 | 0 | void BasicImageScaler::vertUpscaleHorizUpscaleNoInterp() { |
3702 | | //--- vert upscale |
3703 | 0 | if (yn == 0) { |
3704 | 0 | yn = yp; |
3705 | 0 | yt += yq; |
3706 | 0 | if (yt >= srcHeight) { |
3707 | 0 | yt -= srcHeight; |
3708 | 0 | ++yn; |
3709 | 0 | } |
3710 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3711 | 0 | } |
3712 | 0 | --yn; |
3713 | | |
3714 | | //--- horiz upscale |
3715 | 0 | int xt = 0; |
3716 | 0 | int scaledColorIdx = 0; |
3717 | 0 | int srcColorIdx = 0; |
3718 | 0 | int scaledAlphaIdx = 0; |
3719 | 0 | for (int srcIdx = 0; srcIdx < srcWidth; ++srcIdx) { |
3720 | 0 | int xStep = xp; |
3721 | 0 | xt += xq; |
3722 | 0 | if (xt >= srcWidth) { |
3723 | 0 | xt -= srcWidth; |
3724 | 0 | ++xStep; |
3725 | 0 | } |
3726 | 0 | for (int i = 0; i < xStep; ++i) { |
3727 | 0 | for (int j = 0; j < nComps; ++j) { |
3728 | 0 | colorLine[scaledColorIdx + j] = colorTmpBuf0[srcColorIdx + j]; |
3729 | 0 | } |
3730 | 0 | scaledColorIdx += nComps; |
3731 | 0 | } |
3732 | 0 | srcColorIdx += nComps; |
3733 | 0 | if (hasAlpha) { |
3734 | 0 | Guchar alphaBuf = alphaTmpBuf0[srcIdx]; |
3735 | 0 | for (int i = 0; i < xStep; ++i) { |
3736 | 0 | alphaLine[scaledAlphaIdx] = alphaBuf; |
3737 | 0 | ++scaledAlphaIdx; |
3738 | 0 | } |
3739 | 0 | } |
3740 | 0 | } |
3741 | 0 | } |
3742 | | |
3743 | 0 | void BasicImageScaler::vertUpscaleHorizUpscaleInterp() { |
3744 | | //--- vert upscale |
3745 | 0 | if (ySrcCur == 0) { |
3746 | 0 | (*src)(srcData, colorTmpBuf0, alphaTmpBuf0); |
3747 | 0 | (*src)(srcData, colorTmpBuf1, alphaTmpBuf1); |
3748 | 0 | ySrcCur = 1; |
3749 | 0 | } |
3750 | 0 | SplashCoord ys = ((SplashCoord)yScaledCur + 0.5) * yInvScale; |
3751 | 0 | int y0 = splashFloor(ys - 0.5); |
3752 | 0 | int y1 = y0 + 1; |
3753 | 0 | SplashCoord vs0 = (SplashCoord)y1 + 0.5 - ys; |
3754 | 0 | SplashCoord vs1 = (SplashCoord)1 - vs0; |
3755 | 0 | if (y1 > ySrcCur && ySrcCur < srcHeight - 1) { |
3756 | 0 | Guchar *t = colorTmpBuf0; |
3757 | 0 | colorTmpBuf0 = colorTmpBuf1; |
3758 | 0 | colorTmpBuf1 = t; |
3759 | 0 | if (hasAlpha) { |
3760 | 0 | t = alphaTmpBuf0; |
3761 | 0 | alphaTmpBuf0 = alphaTmpBuf1; |
3762 | 0 | alphaTmpBuf1 = t; |
3763 | 0 | } |
3764 | 0 | (*src)(srcData, colorTmpBuf1, alphaTmpBuf1); |
3765 | 0 | ++ySrcCur; |
3766 | 0 | } |
3767 | 0 | Guchar *color0 = colorTmpBuf0; |
3768 | 0 | Guchar *color1 = colorTmpBuf1; |
3769 | 0 | Guchar *alpha0 = alphaTmpBuf0; |
3770 | 0 | Guchar *alpha1 = alphaTmpBuf1; |
3771 | 0 | if (y0 < 0) { |
3772 | 0 | y0 = 0; |
3773 | 0 | color1 = color0; |
3774 | 0 | alpha1 = alpha0; |
3775 | 0 | } |
3776 | 0 | if (y1 >= srcHeight) { |
3777 | 0 | y1 = srcHeight - 1; |
3778 | 0 | color0 = color1; |
3779 | 0 | alpha0 = alpha1; |
3780 | 0 | } |
3781 | 0 | ++yScaledCur; |
3782 | 0 | for (int srcIdx = 0; srcIdx < srcWidth * nComps; ++srcIdx) { |
3783 | 0 | colorTmpBuf2[srcIdx] = (Guchar)(int)(vs0 * (int)color0[srcIdx] + |
3784 | 0 | vs1 * (int)color1[srcIdx]); |
3785 | 0 | } |
3786 | 0 | if (hasAlpha) { |
3787 | 0 | for (int srcIdx = 0; srcIdx < srcWidth; ++srcIdx) { |
3788 | 0 | alphaTmpBuf2[srcIdx] = (Guchar)(int)(vs0 * (int)alpha0[srcIdx] + |
3789 | 0 | vs1 * (int)alpha1[srcIdx]); |
3790 | 0 | } |
3791 | 0 | } |
3792 | | |
3793 | | //--- horiz upscale |
3794 | 0 | int scaledColorIdx = 0; |
3795 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
3796 | 0 | SplashCoord xs = ((SplashCoord)scaledIdx + 0.5) * xInvScale; |
3797 | 0 | int x0 = splashFloor(xs - 0.5); |
3798 | 0 | int x1 = x0 + 1; |
3799 | 0 | SplashCoord hs0 = (SplashCoord)x1 + 0.5 - xs; |
3800 | 0 | SplashCoord hs1 = (SplashCoord)1 - hs0; |
3801 | 0 | if (x0 < 0) { |
3802 | 0 | x0 = 0; |
3803 | 0 | } |
3804 | 0 | if (x1 >= srcWidth) { |
3805 | 0 | x1 = srcWidth - 1; |
3806 | 0 | } |
3807 | 0 | for (int j = 0; j < nComps; ++j) { |
3808 | 0 | colorLine[scaledColorIdx + j] = |
3809 | 0 | (Guchar)(int)(hs0 * (int)colorTmpBuf2[x0 * nComps + j] + |
3810 | 0 | hs1 * (int)colorTmpBuf2[x1 * nComps + j]); |
3811 | 0 | } |
3812 | 0 | scaledColorIdx += nComps; |
3813 | 0 | if (hasAlpha) { |
3814 | 0 | alphaLine[scaledIdx] = (Guchar)(int)(hs0 * (int)alphaTmpBuf2[x0] + |
3815 | 0 | hs1 * (int)alphaTmpBuf2[x1]); |
3816 | 0 | } |
3817 | 0 | } |
3818 | 0 | } |
3819 | | |
3820 | | //------------------------------------------------------------------------ |
3821 | | // SavingImageScaler |
3822 | | //------------------------------------------------------------------------ |
3823 | | |
3824 | | // Wrapper around BasicImageScaler that saves the scaled image for use |
3825 | | // by ReplayImageScaler. |
3826 | | class SavingImageScaler: public BasicImageScaler { |
3827 | | public: |
3828 | | |
3829 | | SavingImageScaler(SplashImageSource aSrc, void *aSrcData, |
3830 | | int aSrcWidth, int aSrcHeight, int aNComps, GBool aHasAlpha, |
3831 | | int aScaledWidth, int aScaledHeight, GBool aInterpolate, |
3832 | | Guchar *aColorCache, Guchar *aAlphaCache); |
3833 | | virtual void nextLine(); |
3834 | | |
3835 | | private: |
3836 | | |
3837 | | Guchar *colorPtr; |
3838 | | Guchar *alphaPtr; |
3839 | | }; |
3840 | | |
3841 | | SavingImageScaler::SavingImageScaler(SplashImageSource aSrc, void *aSrcData, |
3842 | | int aSrcWidth, int aSrcHeight, |
3843 | | int aNComps, GBool aHasAlpha, |
3844 | | int aScaledWidth, int aScaledHeight, |
3845 | | GBool aInterpolate, |
3846 | | Guchar *aColorCache, Guchar *aAlphaCache): |
3847 | | BasicImageScaler(aSrc, aSrcData, aSrcWidth, aSrcHeight, aNComps, aHasAlpha, |
3848 | | aScaledWidth, aScaledHeight, aInterpolate) |
3849 | 0 | { |
3850 | 0 | colorPtr = aColorCache; |
3851 | 0 | alphaPtr = aAlphaCache; |
3852 | 0 | } |
3853 | | |
3854 | 0 | void SavingImageScaler::nextLine() { |
3855 | 0 | BasicImageScaler::nextLine(); |
3856 | 0 | memcpy(colorPtr, colorData(), scaledWidth * nComps); |
3857 | 0 | colorPtr += scaledWidth * nComps; |
3858 | 0 | if (hasAlpha) { |
3859 | 0 | memcpy(alphaPtr, alphaData(), scaledWidth); |
3860 | 0 | alphaPtr += scaledWidth; |
3861 | 0 | } |
3862 | 0 | } |
3863 | | |
3864 | | //------------------------------------------------------------------------ |
3865 | | // ReplayImageScaler |
3866 | | //------------------------------------------------------------------------ |
3867 | | |
3868 | | // "Replay" a scaled image saved by SavingImageScaler. |
3869 | | class ReplayImageScaler: public ImageScaler { |
3870 | | public: |
3871 | | |
3872 | | ReplayImageScaler(int aNComps, GBool aHasAlpha, |
3873 | | int aScaledWidth, |
3874 | | Guchar *aColorCache, Guchar *aAlphaCache); |
3875 | | virtual void nextLine(); |
3876 | 0 | virtual Guchar *colorData() { return colorLine; } |
3877 | 0 | virtual Guchar *alphaData() { return alphaLine; } |
3878 | | |
3879 | | private: |
3880 | | |
3881 | | int nComps; |
3882 | | GBool hasAlpha; |
3883 | | int scaledWidth; |
3884 | | Guchar *colorPtr; |
3885 | | Guchar *alphaPtr; |
3886 | | Guchar *colorLine; |
3887 | | Guchar *alphaLine; |
3888 | | }; |
3889 | | |
3890 | | ReplayImageScaler::ReplayImageScaler(int aNComps, GBool aHasAlpha, |
3891 | | int aScaledWidth, |
3892 | 0 | Guchar *aColorCache, Guchar *aAlphaCache) { |
3893 | 0 | nComps = aNComps; |
3894 | 0 | hasAlpha = aHasAlpha; |
3895 | 0 | scaledWidth = aScaledWidth; |
3896 | 0 | colorPtr = aColorCache; |
3897 | 0 | alphaPtr = aAlphaCache; |
3898 | 0 | colorLine = NULL; |
3899 | 0 | alphaLine = NULL; |
3900 | 0 | } |
3901 | | |
3902 | 0 | void ReplayImageScaler::nextLine() { |
3903 | 0 | colorLine = colorPtr; |
3904 | 0 | alphaLine = alphaPtr; |
3905 | 0 | colorPtr += scaledWidth * nComps; |
3906 | 0 | if (hasAlpha) { |
3907 | 0 | alphaPtr += scaledWidth; |
3908 | 0 | } |
3909 | 0 | } |
3910 | | |
3911 | | //------------------------------------------------------------------------ |
3912 | | // ImageMaskScaler |
3913 | | //------------------------------------------------------------------------ |
3914 | | |
3915 | | class ImageMaskScaler { |
3916 | | public: |
3917 | | |
3918 | | // Set up a MaskScaler to scale from [srcWidth]x[srcHeight] to |
3919 | | // [scaledWidth]x[scaledHeight]. |
3920 | | ImageMaskScaler(SplashImageMaskSource aSrc, void *aSrcData, |
3921 | | int aSrcWidth, int aSrcHeight, |
3922 | | int aScaledWidth, int aScaledHeight, GBool aInterpolate); |
3923 | | |
3924 | | ~ImageMaskScaler(); |
3925 | | |
3926 | | // Compute the next line of the scaled image mask. This can be |
3927 | | // called up to [scaledHeight] times. |
3928 | | void nextLine(); |
3929 | | |
3930 | | // Retrieve the data generated by the most recent call to |
3931 | | // nextLine(). |
3932 | 0 | Guchar *data() { return line; } |
3933 | | |
3934 | | private: |
3935 | | |
3936 | | void vertDownscaleHorizDownscale(); |
3937 | | void vertDownscaleHorizUpscaleNoInterp(); |
3938 | | void vertDownscaleHorizUpscaleInterp(); |
3939 | | void vertUpscaleHorizDownscaleNoInterp(); |
3940 | | void vertUpscaleHorizDownscaleInterp(); |
3941 | | void vertUpscaleHorizUpscaleNoInterp(); |
3942 | | void vertUpscaleHorizUpscaleInterp(); |
3943 | | |
3944 | | // source image data function |
3945 | | SplashImageMaskSource src; |
3946 | | void *srcData; |
3947 | | |
3948 | | // source image size |
3949 | | int srcWidth; |
3950 | | int srcHeight; |
3951 | | |
3952 | | // scaled image size |
3953 | | int scaledWidth; |
3954 | | int scaledHeight; |
3955 | | |
3956 | | // params/state for vertical scaling |
3957 | | int yp, yq; |
3958 | | int yt, yn; |
3959 | | int ySrcCur, yScaledCur; |
3960 | | SplashCoord yInvScale; |
3961 | | |
3962 | | // params for horizontal scaling |
3963 | | int xp, xq; |
3964 | | SplashCoord xInvScale; |
3965 | | |
3966 | | // vertical and horizontal scaling functions |
3967 | | void (ImageMaskScaler::*scalingFunc)(); |
3968 | | |
3969 | | // temporary buffers for vertical scaling |
3970 | | Guchar *tmpBuf0; |
3971 | | Guchar *tmpBuf1; |
3972 | | Guchar *tmpBuf2; |
3973 | | Guint *accBuf; |
3974 | | |
3975 | | // output of horizontal scaling |
3976 | | Guchar *line; |
3977 | | }; |
3978 | | |
3979 | | ImageMaskScaler::ImageMaskScaler(SplashImageMaskSource aSrc, void *aSrcData, |
3980 | | int aSrcWidth, int aSrcHeight, |
3981 | | int aScaledWidth, int aScaledHeight, |
3982 | 0 | GBool aInterpolate) { |
3983 | 0 | tmpBuf0 = NULL; |
3984 | 0 | tmpBuf1 = NULL; |
3985 | 0 | tmpBuf2 = NULL; |
3986 | 0 | accBuf = NULL; |
3987 | 0 | line = NULL; |
3988 | |
|
3989 | 0 | src = aSrc; |
3990 | 0 | srcData = aSrcData; |
3991 | 0 | srcWidth = aSrcWidth; |
3992 | 0 | srcHeight = aSrcHeight; |
3993 | 0 | scaledWidth = aScaledWidth; |
3994 | 0 | scaledHeight = aScaledHeight; |
3995 | | |
3996 | | // select scaling function; allocate buffers |
3997 | 0 | if (scaledHeight <= srcHeight) { |
3998 | | // vertical downscaling |
3999 | 0 | yp = srcHeight / scaledHeight; |
4000 | 0 | yq = srcHeight % scaledHeight; |
4001 | 0 | yt = 0; |
4002 | 0 | tmpBuf0 = (Guchar *)gmalloc(srcWidth); |
4003 | 0 | accBuf = (Guint *)gmallocn(srcWidth, sizeof(Guint)); |
4004 | 0 | if (scaledWidth <= srcWidth) { |
4005 | 0 | scalingFunc = &ImageMaskScaler::vertDownscaleHorizDownscale; |
4006 | 0 | } else { |
4007 | 0 | if (aInterpolate) { |
4008 | 0 | scalingFunc = &ImageMaskScaler::vertDownscaleHorizUpscaleInterp; |
4009 | 0 | } else { |
4010 | 0 | scalingFunc = &ImageMaskScaler::vertDownscaleHorizUpscaleNoInterp; |
4011 | 0 | } |
4012 | 0 | } |
4013 | 0 | } else { |
4014 | | // vertical upscaling |
4015 | 0 | yp = scaledHeight / srcHeight; |
4016 | 0 | yq = scaledHeight % srcHeight; |
4017 | 0 | yt = 0; |
4018 | 0 | yn = 0; |
4019 | 0 | if (aInterpolate) { |
4020 | 0 | yInvScale = (SplashCoord)srcHeight / (SplashCoord)scaledHeight; |
4021 | 0 | tmpBuf0 = (Guchar *)gmalloc(srcWidth); |
4022 | 0 | tmpBuf1 = (Guchar *)gmalloc(srcWidth); |
4023 | 0 | ySrcCur = 0; |
4024 | 0 | yScaledCur = 0; |
4025 | 0 | if (scaledWidth <= srcWidth) { |
4026 | 0 | scalingFunc = &ImageMaskScaler::vertUpscaleHorizDownscaleInterp; |
4027 | 0 | } else { |
4028 | 0 | tmpBuf2 = (Guchar *)gmalloc(srcWidth); |
4029 | 0 | scalingFunc = &ImageMaskScaler::vertUpscaleHorizUpscaleInterp; |
4030 | 0 | } |
4031 | 0 | } else { |
4032 | 0 | tmpBuf0 = (Guchar *)gmalloc(srcWidth); |
4033 | 0 | if (scaledWidth <= srcWidth) { |
4034 | 0 | scalingFunc = &ImageMaskScaler::vertUpscaleHorizDownscaleNoInterp; |
4035 | 0 | } else { |
4036 | 0 | scalingFunc = &ImageMaskScaler::vertUpscaleHorizUpscaleNoInterp; |
4037 | 0 | } |
4038 | 0 | } |
4039 | 0 | } |
4040 | 0 | if (scaledWidth <= srcWidth) { |
4041 | 0 | xp = srcWidth / scaledWidth; |
4042 | 0 | xq = srcWidth % scaledWidth; |
4043 | 0 | } else { |
4044 | 0 | xp = scaledWidth / srcWidth; |
4045 | 0 | xq = scaledWidth % srcWidth; |
4046 | 0 | if (aInterpolate) { |
4047 | 0 | xInvScale = (SplashCoord)srcWidth / (SplashCoord)scaledWidth; |
4048 | 0 | } |
4049 | 0 | } |
4050 | 0 | line = (Guchar *)gmalloc(scaledWidth); |
4051 | 0 | } |
4052 | | |
4053 | 0 | ImageMaskScaler::~ImageMaskScaler() { |
4054 | 0 | gfree(tmpBuf0); |
4055 | 0 | gfree(tmpBuf1); |
4056 | 0 | gfree(tmpBuf2); |
4057 | 0 | gfree(accBuf); |
4058 | 0 | gfree(line); |
4059 | 0 | } |
4060 | | |
4061 | 0 | void ImageMaskScaler::nextLine() { |
4062 | 0 | (this->*scalingFunc)(); |
4063 | 0 | } |
4064 | | |
4065 | 0 | void ImageMaskScaler::vertDownscaleHorizDownscale() { |
4066 | | //--- vert downscale |
4067 | 0 | int yStep = yp; |
4068 | 0 | yt += yq; |
4069 | 0 | if (yt >= scaledHeight) { |
4070 | 0 | yt -= scaledHeight; |
4071 | 0 | ++yStep; |
4072 | 0 | } |
4073 | 0 | memset(accBuf, 0, srcWidth * sizeof(Guint)); |
4074 | 0 | for (int i = 0; i < yStep; ++i) { |
4075 | 0 | (*src)(srcData, tmpBuf0); |
4076 | 0 | for (int j = 0; j < srcWidth; ++j) { |
4077 | 0 | accBuf[j] += tmpBuf0[j]; |
4078 | 0 | } |
4079 | 0 | } |
4080 | | |
4081 | | //--- horiz downscale |
4082 | 0 | int acc; |
4083 | 0 | int xt = 0; |
4084 | 0 | int unscaledIdx = 0; |
4085 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
4086 | 0 | int xStep = xp; |
4087 | 0 | xt += xq; |
4088 | 0 | if (xt >= scaledWidth) { |
4089 | 0 | xt -= scaledWidth; |
4090 | 0 | ++xStep; |
4091 | 0 | } |
4092 | |
|
4093 | 0 | acc = 0; |
4094 | 0 | for (int i = 0; i < xStep; ++i) { |
4095 | 0 | acc += accBuf[unscaledIdx]; |
4096 | 0 | ++unscaledIdx; |
4097 | 0 | } |
4098 | 0 | line[scaledIdx] = (Guchar)((255 * acc) / (xStep * yStep)); |
4099 | 0 | } |
4100 | 0 | } |
4101 | | |
4102 | 0 | void ImageMaskScaler::vertDownscaleHorizUpscaleNoInterp() { |
4103 | | //--- vert downscale |
4104 | 0 | int yStep = yp; |
4105 | 0 | yt += yq; |
4106 | 0 | if (yt >= scaledHeight) { |
4107 | 0 | yt -= scaledHeight; |
4108 | 0 | ++yStep; |
4109 | 0 | } |
4110 | 0 | memset(accBuf, 0, srcWidth * sizeof(Guint)); |
4111 | 0 | for (int i = 0; i < yStep; ++i) { |
4112 | 0 | (*src)(srcData, tmpBuf0); |
4113 | 0 | for (int j = 0; j < srcWidth; ++j) { |
4114 | 0 | accBuf[j] += tmpBuf0[j]; |
4115 | 0 | } |
4116 | 0 | } |
4117 | | |
4118 | | //--- horiz upscale |
4119 | 0 | int xt = 0; |
4120 | 0 | int scaledIdx = 0; |
4121 | 0 | for (int srcIdx = 0; srcIdx < srcWidth; ++srcIdx) { |
4122 | 0 | int xStep = xp; |
4123 | 0 | xt += xq; |
4124 | 0 | if (xt >= srcWidth) { |
4125 | 0 | xt -= srcWidth; |
4126 | 0 | ++xStep; |
4127 | 0 | } |
4128 | 0 | Guchar buf = (Guchar)((255 * accBuf[srcIdx]) / yStep); |
4129 | 0 | for (int i = 0; i < xStep; ++i) { |
4130 | 0 | line[scaledIdx] = buf; |
4131 | 0 | ++scaledIdx; |
4132 | 0 | } |
4133 | 0 | } |
4134 | 0 | } |
4135 | | |
4136 | 0 | void ImageMaskScaler::vertDownscaleHorizUpscaleInterp() { |
4137 | | //--- vert downscale |
4138 | 0 | int yStep = yp; |
4139 | 0 | yt += yq; |
4140 | 0 | if (yt >= scaledHeight) { |
4141 | 0 | yt -= scaledHeight; |
4142 | 0 | ++yStep; |
4143 | 0 | } |
4144 | 0 | memset(accBuf, 0, srcWidth * sizeof(Guint)); |
4145 | 0 | for (int i = 0; i < yStep; ++i) { |
4146 | 0 | (*src)(srcData, tmpBuf0); |
4147 | 0 | for (int j = 0; j < srcWidth; ++j) { |
4148 | 0 | accBuf[j] += tmpBuf0[j]; |
4149 | 0 | } |
4150 | 0 | } |
4151 | 0 | for (int j = 0; j < srcWidth; ++j) { |
4152 | 0 | accBuf[j] = (255 * accBuf[j]) / yStep; |
4153 | 0 | } |
4154 | | |
4155 | | //--- horiz upscale |
4156 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
4157 | 0 | SplashCoord xs = ((SplashCoord)scaledIdx + 0.5) * xInvScale; |
4158 | 0 | int x0 = splashFloor(xs - 0.5); |
4159 | 0 | int x1 = x0 + 1; |
4160 | 0 | SplashCoord s0 = (SplashCoord)x1 + 0.5 - xs; |
4161 | 0 | SplashCoord s1 = (SplashCoord)1 - s0; |
4162 | 0 | if (x0 < 0) { |
4163 | 0 | x0 = 0; |
4164 | 0 | } |
4165 | 0 | if (x1 >= srcWidth) { |
4166 | 0 | x1 = srcWidth - 1; |
4167 | 0 | } |
4168 | 0 | line[scaledIdx] = (Guchar)(int)(s0 * accBuf[x0] + s1 * accBuf[x1]); |
4169 | 0 | } |
4170 | 0 | } |
4171 | | |
4172 | 0 | void ImageMaskScaler::vertUpscaleHorizDownscaleNoInterp() { |
4173 | | //--- vert upscale |
4174 | 0 | if (yn == 0) { |
4175 | 0 | yn = yp; |
4176 | 0 | yt += yq; |
4177 | 0 | if (yt >= srcHeight) { |
4178 | 0 | yt -= srcHeight; |
4179 | 0 | ++yn; |
4180 | 0 | } |
4181 | 0 | (*src)(srcData, tmpBuf0); |
4182 | 0 | } |
4183 | 0 | --yn; |
4184 | | |
4185 | | //--- horiz downscale |
4186 | 0 | int acc; |
4187 | 0 | int xt = 0; |
4188 | 0 | int unscaledIdx = 0; |
4189 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
4190 | 0 | int xStep = xp; |
4191 | 0 | xt += xq; |
4192 | 0 | if (xt >= scaledWidth) { |
4193 | 0 | xt -= scaledWidth; |
4194 | 0 | ++xStep; |
4195 | 0 | } |
4196 | |
|
4197 | 0 | acc = 0; |
4198 | 0 | for (int i = 0; i < xStep; ++i) { |
4199 | 0 | acc += tmpBuf0[unscaledIdx]; |
4200 | 0 | ++unscaledIdx; |
4201 | 0 | } |
4202 | 0 | line[scaledIdx] = (Guchar)((255 * acc) / xStep); |
4203 | 0 | } |
4204 | 0 | } |
4205 | | |
4206 | 0 | void ImageMaskScaler::vertUpscaleHorizDownscaleInterp() { |
4207 | | //--- vert upscale |
4208 | 0 | if (ySrcCur == 0) { |
4209 | 0 | (*src)(srcData, tmpBuf0); |
4210 | 0 | (*src)(srcData, tmpBuf1); |
4211 | 0 | ySrcCur = 1; |
4212 | 0 | } |
4213 | 0 | SplashCoord ys = ((SplashCoord)yScaledCur + 0.5) * yInvScale; |
4214 | 0 | int y0 = splashFloor(ys - 0.5); |
4215 | 0 | int y1 = y0 + 1; |
4216 | 0 | SplashCoord vs0 = (SplashCoord)y1 + 0.5 - ys; |
4217 | 0 | SplashCoord vs1 = (SplashCoord)1 - vs0; |
4218 | 0 | if (y1 > ySrcCur && ySrcCur < srcHeight - 1) { |
4219 | 0 | Guchar *t = tmpBuf0; |
4220 | 0 | tmpBuf0 = tmpBuf1; |
4221 | 0 | tmpBuf1 = t; |
4222 | 0 | (*src)(srcData, tmpBuf1); |
4223 | 0 | ++ySrcCur; |
4224 | 0 | } |
4225 | 0 | Guchar *mask0 = tmpBuf0; |
4226 | 0 | Guchar *mask1 = tmpBuf1; |
4227 | 0 | if (y0 < 0) { |
4228 | 0 | y0 = 0; |
4229 | 0 | mask1 = mask0; |
4230 | 0 | } |
4231 | 0 | if (y1 >= srcHeight) { |
4232 | 0 | y1 = srcHeight - 1; |
4233 | 0 | mask0 = mask1; |
4234 | 0 | } |
4235 | 0 | ++yScaledCur; |
4236 | | |
4237 | | //--- horiz downscale |
4238 | 0 | int acc; |
4239 | 0 | int xt = 0; |
4240 | 0 | int unscaledIdx = 0; |
4241 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
4242 | 0 | int xStep = xp; |
4243 | 0 | xt += xq; |
4244 | 0 | if (xt >= scaledWidth) { |
4245 | 0 | xt -= scaledWidth; |
4246 | 0 | ++xStep; |
4247 | 0 | } |
4248 | |
|
4249 | 0 | acc = 0; |
4250 | 0 | for (int i = 0; i < xStep; ++i) { |
4251 | 0 | acc += (int)(vs0 * (int)mask0[unscaledIdx] + |
4252 | 0 | vs1 * (int)mask1[unscaledIdx]); |
4253 | 0 | ++unscaledIdx; |
4254 | 0 | } |
4255 | 0 | line[scaledIdx] = (Guchar)((255 * acc) / xStep); |
4256 | 0 | } |
4257 | 0 | } |
4258 | | |
4259 | 0 | void ImageMaskScaler::vertUpscaleHorizUpscaleNoInterp() { |
4260 | | //--- vert upscale |
4261 | 0 | if (yn == 0) { |
4262 | 0 | yn = yp; |
4263 | 0 | yt += yq; |
4264 | 0 | if (yt >= srcHeight) { |
4265 | 0 | yt -= srcHeight; |
4266 | 0 | ++yn; |
4267 | 0 | } |
4268 | 0 | (*src)(srcData, tmpBuf0); |
4269 | 0 | } |
4270 | 0 | --yn; |
4271 | | |
4272 | | //--- horiz upscale |
4273 | 0 | int xt = 0; |
4274 | 0 | int scaledIdx = 0; |
4275 | 0 | for (int srcIdx = 0; srcIdx < srcWidth; ++srcIdx) { |
4276 | 0 | int xStep = xp; |
4277 | 0 | xt += xq; |
4278 | 0 | if (xt >= srcWidth) { |
4279 | 0 | xt -= srcWidth; |
4280 | 0 | ++xStep; |
4281 | 0 | } |
4282 | 0 | Guchar buf = (Guchar)(255 * tmpBuf0[srcIdx]); |
4283 | 0 | for (int i = 0; i < xStep; ++i) { |
4284 | 0 | line[scaledIdx] = buf; |
4285 | 0 | ++scaledIdx; |
4286 | 0 | } |
4287 | 0 | } |
4288 | 0 | } |
4289 | | |
4290 | 0 | void ImageMaskScaler::vertUpscaleHorizUpscaleInterp() { |
4291 | | //--- vert upscale |
4292 | 0 | if (ySrcCur == 0) { |
4293 | 0 | (*src)(srcData, tmpBuf0); |
4294 | 0 | (*src)(srcData, tmpBuf1); |
4295 | 0 | ySrcCur = 1; |
4296 | 0 | } |
4297 | 0 | SplashCoord ys = ((SplashCoord)yScaledCur + 0.5) * yInvScale; |
4298 | 0 | int y0 = splashFloor(ys - 0.5); |
4299 | 0 | int y1 = y0 + 1; |
4300 | 0 | SplashCoord vs0 = (SplashCoord)255 * ((SplashCoord)y1 + 0.5 - ys); |
4301 | 0 | SplashCoord vs1 = (SplashCoord)255 - vs0; |
4302 | 0 | if (y1 > ySrcCur && ySrcCur < srcHeight - 1) { |
4303 | 0 | Guchar *t = tmpBuf0; |
4304 | 0 | tmpBuf0 = tmpBuf1; |
4305 | 0 | tmpBuf1 = t; |
4306 | 0 | (*src)(srcData, tmpBuf1); |
4307 | 0 | ++ySrcCur; |
4308 | 0 | } |
4309 | 0 | Guchar *mask0 = tmpBuf0; |
4310 | 0 | Guchar *mask1 = tmpBuf1; |
4311 | 0 | if (y0 < 0) { |
4312 | 0 | y0 = 0; |
4313 | 0 | mask1 = mask0; |
4314 | 0 | } |
4315 | 0 | if (y1 >= srcHeight) { |
4316 | 0 | y1 = srcHeight - 1; |
4317 | 0 | mask0 = mask1; |
4318 | 0 | } |
4319 | 0 | ++yScaledCur; |
4320 | 0 | for (int srcIdx = 0; srcIdx < srcWidth; ++srcIdx) { |
4321 | 0 | tmpBuf2[srcIdx] = (Guchar)(int)(vs0 * (int)mask0[srcIdx] + |
4322 | 0 | vs1 * (int)mask1[srcIdx]); |
4323 | 0 | } |
4324 | | |
4325 | | //--- horiz upscale |
4326 | 0 | for (int scaledIdx = 0; scaledIdx < scaledWidth; ++scaledIdx) { |
4327 | 0 | SplashCoord xs = ((SplashCoord)scaledIdx + 0.5) * xInvScale; |
4328 | 0 | int x0 = splashFloor(xs - 0.5); |
4329 | 0 | int x1 = x0 + 1; |
4330 | 0 | SplashCoord hs0 = (SplashCoord)x1 + 0.5 - xs; |
4331 | 0 | SplashCoord hs1 = (SplashCoord)1 - hs0; |
4332 | 0 | if (x0 < 0) { |
4333 | 0 | x0 = 0; |
4334 | 0 | } |
4335 | 0 | if (x1 >= srcWidth) { |
4336 | 0 | x1 = srcWidth - 1; |
4337 | 0 | } |
4338 | 0 | line[scaledIdx] = (Guchar)(int)(hs0 * (int)tmpBuf2[x0] + |
4339 | 0 | hs1 * (int)tmpBuf2[x1]); |
4340 | 0 | } |
4341 | 0 | } |
4342 | | |
4343 | | //------------------------------------------------------------------------ |
4344 | | // Splash |
4345 | | //------------------------------------------------------------------------ |
4346 | | |
4347 | | Splash::Splash(SplashBitmap *bitmapA, GBool vectorAntialiasA, |
4348 | | SplashImageCache *imageCacheA, |
4349 | 0 | SplashScreenParams *screenParams) { |
4350 | 0 | bitmap = bitmapA; |
4351 | 0 | bitmapComps = splashColorModeNComps[bitmap->mode]; |
4352 | 0 | vectorAntialias = vectorAntialiasA; |
4353 | 0 | inShading = gFalse; |
4354 | 0 | state = new SplashState(bitmap->width, bitmap->height, vectorAntialias, |
4355 | 0 | screenParams); |
4356 | 0 | scanBuf = (Guchar *)gmalloc(bitmap->width); |
4357 | 0 | if (bitmap->mode == splashModeMono1) { |
4358 | 0 | scanBuf2 = (Guchar *)gmalloc(bitmap->width); |
4359 | 0 | } else { |
4360 | 0 | scanBuf2 = NULL; |
4361 | 0 | } |
4362 | 0 | groupBackBitmap = NULL; |
4363 | 0 | groupDestInitMode = splashGroupDestPreInit; |
4364 | 0 | overprintMaskBitmap = NULL; |
4365 | 0 | minLineWidth = 0; |
4366 | 0 | clearModRegion(); |
4367 | 0 | debugMode = gFalse; |
4368 | |
|
4369 | 0 | if (imageCacheA) { |
4370 | 0 | imageCache = imageCacheA; |
4371 | 0 | imageCache->incRefCount(); |
4372 | 0 | } else { |
4373 | 0 | imageCache = new SplashImageCache(); |
4374 | 0 | } |
4375 | 0 | } |
4376 | | |
4377 | | Splash::Splash(SplashBitmap *bitmapA, GBool vectorAntialiasA, |
4378 | 0 | SplashImageCache *imageCacheA, SplashScreen *screenA) { |
4379 | 0 | bitmap = bitmapA; |
4380 | 0 | bitmapComps = splashColorModeNComps[bitmap->mode]; |
4381 | 0 | vectorAntialias = vectorAntialiasA; |
4382 | 0 | inShading = gFalse; |
4383 | 0 | state = new SplashState(bitmap->width, bitmap->height, vectorAntialias, |
4384 | 0 | screenA); |
4385 | 0 | scanBuf = (Guchar *)gmalloc(bitmap->width); |
4386 | 0 | if (bitmap->mode == splashModeMono1) { |
4387 | 0 | scanBuf2 = (Guchar *)gmalloc(bitmap->width); |
4388 | 0 | } else { |
4389 | 0 | scanBuf2 = NULL; |
4390 | 0 | } |
4391 | 0 | groupBackBitmap = NULL; |
4392 | 0 | groupDestInitMode = splashGroupDestPreInit; |
4393 | 0 | overprintMaskBitmap = NULL; |
4394 | 0 | minLineWidth = 0; |
4395 | 0 | clearModRegion(); |
4396 | 0 | debugMode = gFalse; |
4397 | |
|
4398 | 0 | if (imageCacheA) { |
4399 | 0 | imageCache = imageCacheA; |
4400 | 0 | imageCache->incRefCount(); |
4401 | 0 | } else { |
4402 | 0 | imageCache = new SplashImageCache(); |
4403 | 0 | } |
4404 | 0 | } |
4405 | | |
4406 | 0 | Splash::~Splash() { |
4407 | 0 | imageCache->decRefCount(); |
4408 | |
|
4409 | 0 | while (state->next) { |
4410 | 0 | restoreState(); |
4411 | 0 | } |
4412 | 0 | delete state; |
4413 | 0 | gfree(scanBuf); |
4414 | 0 | gfree(scanBuf2); |
4415 | 0 | } |
4416 | | |
4417 | | //------------------------------------------------------------------------ |
4418 | | // state read |
4419 | | //------------------------------------------------------------------------ |
4420 | | |
4421 | 0 | SplashCoord *Splash::getMatrix() { |
4422 | 0 | return state->matrix; |
4423 | 0 | } |
4424 | | |
4425 | 0 | SplashPattern *Splash::getStrokePattern() { |
4426 | 0 | return state->strokePattern; |
4427 | 0 | } |
4428 | | |
4429 | 0 | SplashPattern *Splash::getFillPattern() { |
4430 | 0 | return state->fillPattern; |
4431 | 0 | } |
4432 | | |
4433 | 0 | SplashScreen *Splash::getScreen() { |
4434 | 0 | return state->screen; |
4435 | 0 | } |
4436 | | |
4437 | 0 | SplashBlendFunc Splash::getBlendFunc() { |
4438 | 0 | return state->blendFunc; |
4439 | 0 | } |
4440 | | |
4441 | 0 | SplashCoord Splash::getStrokeAlpha() { |
4442 | 0 | return state->strokeAlpha; |
4443 | 0 | } |
4444 | | |
4445 | 0 | SplashCoord Splash::getFillAlpha() { |
4446 | 0 | return state->fillAlpha; |
4447 | 0 | } |
4448 | | |
4449 | 0 | SplashCoord Splash::getLineWidth() { |
4450 | 0 | return state->lineWidth; |
4451 | 0 | } |
4452 | | |
4453 | 0 | int Splash::getLineCap() { |
4454 | 0 | return state->lineCap; |
4455 | 0 | } |
4456 | | |
4457 | 0 | int Splash::getLineJoin() { |
4458 | 0 | return state->lineJoin; |
4459 | 0 | } |
4460 | | |
4461 | 0 | SplashCoord Splash::getMiterLimit() { |
4462 | 0 | return state->miterLimit; |
4463 | 0 | } |
4464 | | |
4465 | 0 | SplashCoord Splash::getFlatness() { |
4466 | 0 | return state->flatness; |
4467 | 0 | } |
4468 | | |
4469 | 0 | SplashCoord *Splash::getLineDash() { |
4470 | 0 | return state->lineDash; |
4471 | 0 | } |
4472 | | |
4473 | 0 | int Splash::getLineDashLength() { |
4474 | 0 | return state->lineDashLength; |
4475 | 0 | } |
4476 | | |
4477 | 0 | SplashCoord Splash::getLineDashPhase() { |
4478 | 0 | return state->lineDashPhase; |
4479 | 0 | } |
4480 | | |
4481 | 0 | SplashStrokeAdjustMode Splash::getStrokeAdjust() { |
4482 | 0 | return state->strokeAdjust; |
4483 | 0 | } |
4484 | | |
4485 | 0 | SplashClip *Splash::getClip() { |
4486 | 0 | return state->clip; |
4487 | 0 | } |
4488 | | |
4489 | 0 | SplashBitmap *Splash::getSoftMask() { |
4490 | 0 | return state->softMask; |
4491 | 0 | } |
4492 | | |
4493 | 0 | GBool Splash::getInNonIsolatedGroup() { |
4494 | 0 | return state->inNonIsolatedGroup; |
4495 | 0 | } |
4496 | | |
4497 | 0 | GBool Splash::getInKnockoutGroup() { |
4498 | 0 | return state->inKnockoutGroup; |
4499 | 0 | } |
4500 | | |
4501 | | //------------------------------------------------------------------------ |
4502 | | // state write |
4503 | | //------------------------------------------------------------------------ |
4504 | | |
4505 | 0 | void Splash::setMatrix(SplashCoord *matrix) { |
4506 | 0 | memcpy(state->matrix, matrix, 6 * sizeof(SplashCoord)); |
4507 | 0 | } |
4508 | | |
4509 | 0 | void Splash::setStrokePattern(SplashPattern *strokePattern) { |
4510 | 0 | state->setStrokePattern(strokePattern); |
4511 | 0 | } |
4512 | | |
4513 | 0 | void Splash::setFillPattern(SplashPattern *fillPattern) { |
4514 | 0 | state->setFillPattern(fillPattern); |
4515 | 0 | } |
4516 | | |
4517 | 0 | void Splash::setScreen(SplashScreen *screen) { |
4518 | 0 | state->setScreen(screen); |
4519 | 0 | } |
4520 | | |
4521 | 0 | void Splash::setBlendFunc(SplashBlendFunc func) { |
4522 | 0 | state->blendFunc = func; |
4523 | 0 | } |
4524 | | |
4525 | 0 | void Splash::setStrokeAlpha(SplashCoord alpha) { |
4526 | 0 | state->strokeAlpha = alpha; |
4527 | 0 | } |
4528 | | |
4529 | 0 | void Splash::setFillAlpha(SplashCoord alpha) { |
4530 | 0 | state->fillAlpha = alpha; |
4531 | 0 | } |
4532 | | |
4533 | 0 | void Splash::setLineWidth(SplashCoord lineWidth) { |
4534 | 0 | state->lineWidth = lineWidth; |
4535 | 0 | } |
4536 | | |
4537 | 0 | void Splash::setLineCap(int lineCap) { |
4538 | 0 | if (lineCap >= 0 && lineCap <= 2) { |
4539 | 0 | state->lineCap = lineCap; |
4540 | 0 | } else { |
4541 | 0 | state->lineCap = 0; |
4542 | 0 | } |
4543 | 0 | } |
4544 | | |
4545 | 0 | void Splash::setLineJoin(int lineJoin) { |
4546 | 0 | if (lineJoin >= 0 && lineJoin <= 2) { |
4547 | 0 | state->lineJoin = lineJoin; |
4548 | 0 | } else { |
4549 | 0 | state->lineJoin = 0; |
4550 | 0 | } |
4551 | 0 | } |
4552 | | |
4553 | 0 | void Splash::setMiterLimit(SplashCoord miterLimit) { |
4554 | 0 | state->miterLimit = miterLimit; |
4555 | 0 | } |
4556 | | |
4557 | 0 | void Splash::setFlatness(SplashCoord flatness) { |
4558 | 0 | if (flatness < 1) { |
4559 | 0 | state->flatness = 1; |
4560 | 0 | } else { |
4561 | 0 | state->flatness = flatness; |
4562 | 0 | } |
4563 | 0 | } |
4564 | | |
4565 | | void Splash::setLineDash(SplashCoord *lineDash, int lineDashLength, |
4566 | 0 | SplashCoord lineDashPhase) { |
4567 | 0 | state->setLineDash(lineDash, lineDashLength, lineDashPhase); |
4568 | 0 | } |
4569 | | |
4570 | 0 | void Splash::setStrokeAdjust(SplashStrokeAdjustMode strokeAdjust) { |
4571 | 0 | state->strokeAdjust = strokeAdjust; |
4572 | 0 | } |
4573 | | |
4574 | | void Splash::clipResetToRect(SplashCoord x0, SplashCoord y0, |
4575 | 0 | SplashCoord x1, SplashCoord y1) { |
4576 | 0 | state->clipResetToRect(x0, y0, x1, y1); |
4577 | 0 | } |
4578 | | |
4579 | | SplashError Splash::clipToRect(SplashCoord x0, SplashCoord y0, |
4580 | 0 | SplashCoord x1, SplashCoord y1) { |
4581 | 0 | return state->clipToRect(x0, y0, x1, y1); |
4582 | 0 | } |
4583 | | |
4584 | 0 | SplashError Splash::clipToPath(SplashPath *path, GBool eo) { |
4585 | 0 | return state->clipToPath(path, eo); |
4586 | 0 | } |
4587 | | |
4588 | 0 | void Splash::setSoftMask(SplashBitmap *softMask) { |
4589 | 0 | state->setSoftMask(softMask); |
4590 | 0 | } |
4591 | | |
4592 | | void Splash::setInTransparencyGroup(SplashBitmap *groupBackBitmapA, |
4593 | | int groupBackXA, int groupBackYA, |
4594 | | SplashGroupDestInitMode groupDestInitModeA, |
4595 | 0 | GBool nonIsolated, GBool knockout) { |
4596 | 0 | groupBackBitmap = groupBackBitmapA; |
4597 | 0 | groupBackX = groupBackXA; |
4598 | 0 | groupBackY = groupBackYA; |
4599 | 0 | groupDestInitMode = groupDestInitModeA; |
4600 | 0 | groupDestInitYMin = 1; |
4601 | 0 | groupDestInitYMax = 0; |
4602 | 0 | state->inNonIsolatedGroup = nonIsolated; |
4603 | 0 | state->inKnockoutGroup = knockout; |
4604 | 0 | } |
4605 | | |
4606 | 0 | void Splash::forceDeferredInit(int y, int h) { |
4607 | 0 | useDestRow(y); |
4608 | 0 | useDestRow(y + h - 1); |
4609 | 0 | } |
4610 | | |
4611 | | void Splash::setTransfer(Guchar *red, Guchar *green, Guchar *blue, |
4612 | 0 | Guchar *gray) { |
4613 | 0 | state->setTransfer(red, green, blue, gray); |
4614 | 0 | } |
4615 | | |
4616 | 0 | void Splash::setOverprintMask(Guint overprintMask) { |
4617 | 0 | state->overprintMask = overprintMask; |
4618 | 0 | } |
4619 | | |
4620 | | |
4621 | 0 | void Splash::setEnablePathSimplification(GBool en) { |
4622 | 0 | state->enablePathSimplification = en; |
4623 | 0 | } |
4624 | | |
4625 | | //------------------------------------------------------------------------ |
4626 | | // state save/restore |
4627 | | //------------------------------------------------------------------------ |
4628 | | |
4629 | 0 | void Splash::saveState() { |
4630 | 0 | SplashState *newState; |
4631 | |
|
4632 | 0 | newState = state->copy(); |
4633 | 0 | newState->next = state; |
4634 | 0 | state = newState; |
4635 | 0 | } |
4636 | | |
4637 | 0 | SplashError Splash::restoreState() { |
4638 | 0 | SplashState *oldState; |
4639 | |
|
4640 | 0 | if (!state->next) { |
4641 | 0 | return splashErrNoSave; |
4642 | 0 | } |
4643 | 0 | oldState = state; |
4644 | 0 | state = state->next; |
4645 | 0 | delete oldState; |
4646 | 0 | return splashOk; |
4647 | 0 | } |
4648 | | |
4649 | | //------------------------------------------------------------------------ |
4650 | | // drawing operations |
4651 | | //------------------------------------------------------------------------ |
4652 | | |
4653 | 0 | void Splash::clear(SplashColorPtr color, Guchar alpha) { |
4654 | 0 | SplashColorPtr row, p; |
4655 | 0 | Guchar mono; |
4656 | 0 | int x, y; |
4657 | |
|
4658 | 0 | switch (bitmap->mode) { |
4659 | 0 | case splashModeMono1: |
4660 | 0 | mono = (color[0] & 0x80) ? 0xff : 0x00; |
4661 | 0 | if (bitmap->rowSize < 0) { |
4662 | 0 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), |
4663 | 0 | mono, -bitmap->rowSize * bitmap->height); |
4664 | 0 | } else { |
4665 | 0 | memset(bitmap->data, mono, bitmap->rowSize * bitmap->height); |
4666 | 0 | } |
4667 | 0 | break; |
4668 | 0 | case splashModeMono8: |
4669 | 0 | if (bitmap->rowSize < 0) { |
4670 | 0 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), |
4671 | 0 | color[0], -bitmap->rowSize * bitmap->height); |
4672 | 0 | } else { |
4673 | 0 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); |
4674 | 0 | } |
4675 | 0 | break; |
4676 | 0 | case splashModeRGB8: |
4677 | 0 | if (color[0] == color[1] && color[1] == color[2]) { |
4678 | 0 | if (bitmap->rowSize < 0) { |
4679 | 0 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), |
4680 | 0 | color[0], -bitmap->rowSize * bitmap->height); |
4681 | 0 | } else { |
4682 | 0 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); |
4683 | 0 | } |
4684 | 0 | } else { |
4685 | 0 | row = bitmap->data; |
4686 | 0 | for (y = 0; y < bitmap->height; ++y) { |
4687 | 0 | p = row; |
4688 | 0 | for (x = 0; x < bitmap->width; ++x) { |
4689 | 0 | *p++ = color[0]; |
4690 | 0 | *p++ = color[1]; |
4691 | 0 | *p++ = color[2]; |
4692 | 0 | } |
4693 | 0 | row += bitmap->rowSize; |
4694 | 0 | } |
4695 | 0 | } |
4696 | 0 | break; |
4697 | 0 | case splashModeBGR8: |
4698 | 0 | if (color[0] == color[1] && color[1] == color[2]) { |
4699 | 0 | if (bitmap->rowSize < 0) { |
4700 | 0 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), |
4701 | 0 | color[0], -bitmap->rowSize * bitmap->height); |
4702 | 0 | } else { |
4703 | 0 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); |
4704 | 0 | } |
4705 | 0 | } else { |
4706 | 0 | row = bitmap->data; |
4707 | 0 | for (y = 0; y < bitmap->height; ++y) { |
4708 | 0 | p = row; |
4709 | 0 | for (x = 0; x < bitmap->width; ++x) { |
4710 | 0 | *p++ = color[2]; |
4711 | 0 | *p++ = color[1]; |
4712 | 0 | *p++ = color[0]; |
4713 | 0 | } |
4714 | 0 | row += bitmap->rowSize; |
4715 | 0 | } |
4716 | 0 | } |
4717 | 0 | break; |
4718 | 0 | #if SPLASH_CMYK |
4719 | 0 | case splashModeCMYK8: |
4720 | 0 | if (color[0] == color[1] && color[1] == color[2] && color[2] == color[3]) { |
4721 | 0 | if (bitmap->rowSize < 0) { |
4722 | 0 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), |
4723 | 0 | color[0], -bitmap->rowSize * bitmap->height); |
4724 | 0 | } else { |
4725 | 0 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); |
4726 | 0 | } |
4727 | 0 | } else { |
4728 | 0 | row = bitmap->data; |
4729 | 0 | for (y = 0; y < bitmap->height; ++y) { |
4730 | 0 | p = row; |
4731 | 0 | for (x = 0; x < bitmap->width; ++x) { |
4732 | 0 | *p++ = color[0]; |
4733 | 0 | *p++ = color[1]; |
4734 | 0 | *p++ = color[2]; |
4735 | 0 | *p++ = color[3]; |
4736 | 0 | } |
4737 | 0 | row += bitmap->rowSize; |
4738 | 0 | } |
4739 | 0 | } |
4740 | 0 | break; |
4741 | 0 | #endif |
4742 | 0 | } |
4743 | | |
4744 | 0 | if (bitmap->alpha) { |
4745 | 0 | memset(bitmap->alpha, alpha, bitmap->alphaRowSize * bitmap->height); |
4746 | 0 | } |
4747 | |
|
4748 | 0 | updateModX(0); |
4749 | 0 | updateModY(0); |
4750 | 0 | updateModX(bitmap->width - 1); |
4751 | 0 | updateModY(bitmap->height - 1); |
4752 | 0 | } |
4753 | | |
4754 | 0 | SplashError Splash::stroke(SplashPath *path) { |
4755 | 0 | SplashPath *path2, *dPath; |
4756 | 0 | SplashCoord t0, t1, t2, t3, w, w2, lineDashMax, lineDashTotal; |
4757 | 0 | int lineCap, lineJoin, i; |
4758 | |
|
4759 | 0 | if (debugMode) { |
4760 | 0 | printf("stroke [dash:%d] [width:%.2f]:\n", |
4761 | 0 | state->lineDashLength, (double)state->lineWidth); |
4762 | 0 | dumpPath(path); |
4763 | 0 | } |
4764 | 0 | opClipRes = splashClipAllOutside; |
4765 | 0 | if (path->length == 0) { |
4766 | 0 | return splashErrEmptyPath; |
4767 | 0 | } |
4768 | 0 | path2 = flattenPath(path, state->matrix, state->flatness); |
4769 | | |
4770 | | // Compute an approximation of the transformed line width. |
4771 | | // Given a CTM of [m0 m1], |
4772 | | // [m2 m3] |
4773 | | // if |m0|*|m3| >= |m1|*|m2| then use min{|m0|,|m3|}, else |
4774 | | // use min{|m1|,|m2|}. |
4775 | | // This handles the common cases -- [s 0 ] and [0 s] -- |
4776 | | // [0 +/-s] [+/-s 0] |
4777 | | // well, and still does something reasonable for the uncommon |
4778 | | // case transforms. |
4779 | 0 | t0 = splashAbs(state->matrix[0]); |
4780 | 0 | t1 = splashAbs(state->matrix[1]); |
4781 | 0 | t2 = splashAbs(state->matrix[2]); |
4782 | 0 | t3 = splashAbs(state->matrix[3]); |
4783 | 0 | if (t0 * t3 >= t1 * t2) { |
4784 | 0 | w = (t0 < t3) ? t0 : t3; |
4785 | 0 | } else { |
4786 | 0 | w = (t1 < t2) ? t1 : t2; |
4787 | 0 | } |
4788 | 0 | w2 = w * state->lineWidth; |
4789 | | |
4790 | | // construct the dashed path |
4791 | 0 | if (state->lineDashLength > 0) { |
4792 | | |
4793 | | // check the maximum transformed dash element length (using the |
4794 | | // same approximation as for line width) -- if it's less than 0.1 |
4795 | | // pixel, don't apply the dash pattern; this avoids a huge |
4796 | | // performance/memory hit with PDF files that use absurd dash |
4797 | | // patterns like [0.0007 0.0003] |
4798 | 0 | lineDashTotal = 0; |
4799 | 0 | lineDashMax = 0; |
4800 | 0 | for (i = 0; i < state->lineDashLength; ++i) { |
4801 | 0 | lineDashTotal += state->lineDash[i]; |
4802 | 0 | if (state->lineDash[i] > lineDashMax) { |
4803 | 0 | lineDashMax = state->lineDash[i]; |
4804 | 0 | } |
4805 | 0 | } |
4806 | | // Acrobat simply draws nothing if the dash array is [0] |
4807 | 0 | if (lineDashTotal == 0) { |
4808 | 0 | delete path2; |
4809 | 0 | return splashOk; |
4810 | 0 | } |
4811 | 0 | if (w * lineDashMax > 0.1) { |
4812 | |
|
4813 | 0 | dPath = makeDashedPath(path2); |
4814 | 0 | delete path2; |
4815 | 0 | path2 = dPath; |
4816 | 0 | if (path2->length == 0) { |
4817 | 0 | delete path2; |
4818 | 0 | return splashErrEmptyPath; |
4819 | 0 | } |
4820 | 0 | } |
4821 | 0 | } |
4822 | | |
4823 | | // round caps on narrow lines look bad, and can't be |
4824 | | // stroke-adjusted, so use projecting caps instead (but we can't do |
4825 | | // this if there are zero-length dashes or segments, because those |
4826 | | // turn into round dots) |
4827 | 0 | lineCap = state->lineCap; |
4828 | 0 | lineJoin = state->lineJoin; |
4829 | 0 | if (state->strokeAdjust == splashStrokeAdjustCAD && |
4830 | 0 | w2 < 3.5) { |
4831 | 0 | if (lineCap == splashLineCapRound && |
4832 | 0 | !state->lineDashContainsZeroLengthDashes() && |
4833 | 0 | !path->containsZeroLengthSubpaths()) { |
4834 | 0 | lineCap = splashLineCapProjecting; |
4835 | 0 | } |
4836 | 0 | if (lineJoin == splashLineJoinRound) { |
4837 | 0 | lineJoin = splashLineJoinBevel; |
4838 | 0 | } |
4839 | 0 | } |
4840 | | |
4841 | | // if there is a min line width set, and the transformed line width |
4842 | | // is smaller, use the min line width |
4843 | 0 | if (w > 0 && w2 < minLineWidth) { |
4844 | 0 | strokeWide(path2, minLineWidth / w, splashLineCapButt, splashLineJoinBevel); |
4845 | 0 | } else if (bitmap->mode == splashModeMono1 || !vectorAntialias) { |
4846 | | // in monochrome mode or if antialiasing is disabled, use 0-width |
4847 | | // lines for any transformed line width <= 1 -- lines less than 1 |
4848 | | // pixel wide look too fat without antialiasing |
4849 | 0 | if (w2 < 1.001) { |
4850 | 0 | strokeNarrow(path2); |
4851 | 0 | } else { |
4852 | 0 | strokeWide(path2, state->lineWidth, lineCap, lineJoin); |
4853 | 0 | } |
4854 | 0 | } else { |
4855 | | // in gray and color modes, only use 0-width lines if the line |
4856 | | // width is explicitly set to 0 |
4857 | 0 | if (state->lineWidth == 0) { |
4858 | 0 | strokeNarrow(path2); |
4859 | 0 | } else { |
4860 | 0 | strokeWide(path2, state->lineWidth, lineCap, lineJoin); |
4861 | 0 | } |
4862 | 0 | } |
4863 | |
|
4864 | 0 | delete path2; |
4865 | 0 | return splashOk; |
4866 | 0 | } |
4867 | | |
4868 | 0 | void Splash::strokeNarrow(SplashPath *path) { |
4869 | 0 | SplashPipe pipe; |
4870 | 0 | SplashXPath *xPath; |
4871 | 0 | SplashXPathSeg *seg; |
4872 | 0 | int x0, x1, y0, y1, xa, xb, y; |
4873 | 0 | SplashCoord dxdy; |
4874 | 0 | SplashClipResult clipRes; |
4875 | 0 | int nClipRes[3]; |
4876 | 0 | int i; |
4877 | |
|
4878 | 0 | nClipRes[0] = nClipRes[1] = nClipRes[2] = 0; |
4879 | |
|
4880 | 0 | xPath = new SplashXPath(path, state->matrix, state->flatness, gFalse, |
4881 | 0 | state->enablePathSimplification, |
4882 | 0 | state->strokeAdjust); |
4883 | |
|
4884 | 0 | pipeInit(&pipe, state->strokePattern, |
4885 | 0 | (Guchar)splashRound(state->strokeAlpha * 255), |
4886 | 0 | gTrue, gFalse); |
4887 | |
|
4888 | 0 | for (i = 0, seg = xPath->segs; i < xPath->length; ++i, ++seg) { |
4889 | 0 | if (seg->y0 <= seg->y1) { |
4890 | 0 | y0 = splashFloor(seg->y0); |
4891 | 0 | y1 = splashFloor(seg->y1); |
4892 | 0 | x0 = splashFloor(seg->x0); |
4893 | 0 | x1 = splashFloor(seg->x1); |
4894 | 0 | } else { |
4895 | 0 | y0 = splashFloor(seg->y1); |
4896 | 0 | y1 = splashFloor(seg->y0); |
4897 | 0 | x0 = splashFloor(seg->x1); |
4898 | 0 | x1 = splashFloor(seg->x0); |
4899 | 0 | } |
4900 | 0 | if ((clipRes = state->clip->testRect(x0 <= x1 ? x0 : x1, y0, |
4901 | 0 | x0 <= x1 ? x1 : x0, y1, |
4902 | 0 | state->strokeAdjust)) |
4903 | 0 | != splashClipAllOutside) { |
4904 | 0 | if (y0 == y1) { |
4905 | 0 | if (x0 <= x1) { |
4906 | 0 | drawStrokeSpan(&pipe, x0, x1, y0, clipRes == splashClipAllInside); |
4907 | 0 | } else { |
4908 | 0 | drawStrokeSpan(&pipe, x1, x0, y0, clipRes == splashClipAllInside); |
4909 | 0 | } |
4910 | 0 | } else { |
4911 | 0 | dxdy = seg->dxdy; |
4912 | 0 | y = state->clip->getYMinI(state->strokeAdjust); |
4913 | 0 | if (y0 < y) { |
4914 | 0 | y0 = y; |
4915 | 0 | x0 = splashFloor(seg->x0 + ((SplashCoord)y0 - seg->y0) * dxdy); |
4916 | 0 | } |
4917 | 0 | y = state->clip->getYMaxI(state->strokeAdjust); |
4918 | 0 | if (y1 > y) { |
4919 | 0 | y1 = y; |
4920 | 0 | x1 = splashFloor(seg->x0 + ((SplashCoord)y1 - seg->y0) * dxdy); |
4921 | 0 | } |
4922 | 0 | if (x0 <= x1) { |
4923 | 0 | xa = x0; |
4924 | 0 | for (y = y0; y <= y1; ++y) { |
4925 | 0 | if (y < y1) { |
4926 | 0 | xb = splashFloor(seg->x0 + |
4927 | 0 | ((SplashCoord)y + 1 - seg->y0) * dxdy); |
4928 | 0 | } else { |
4929 | 0 | xb = x1 + 1; |
4930 | 0 | } |
4931 | 0 | if (xa == xb) { |
4932 | 0 | drawStrokeSpan(&pipe, xa, xa, y, clipRes == splashClipAllInside); |
4933 | 0 | } else { |
4934 | 0 | drawStrokeSpan(&pipe, xa, xb - 1, y, |
4935 | 0 | clipRes == splashClipAllInside); |
4936 | 0 | } |
4937 | 0 | xa = xb; |
4938 | 0 | } |
4939 | 0 | } else { |
4940 | 0 | xa = x0; |
4941 | 0 | for (y = y0; y <= y1; ++y) { |
4942 | 0 | if (y < y1) { |
4943 | 0 | xb = splashFloor(seg->x0 + |
4944 | 0 | ((SplashCoord)y + 1 - seg->y0) * dxdy); |
4945 | 0 | } else { |
4946 | 0 | xb = x1 - 1; |
4947 | 0 | } |
4948 | 0 | if (xa == xb) { |
4949 | 0 | drawStrokeSpan(&pipe, xa, xa, y, clipRes == splashClipAllInside); |
4950 | 0 | } else { |
4951 | 0 | drawStrokeSpan(&pipe, xb + 1, xa, y, |
4952 | 0 | clipRes == splashClipAllInside); |
4953 | 0 | } |
4954 | 0 | xa = xb; |
4955 | 0 | } |
4956 | 0 | } |
4957 | 0 | } |
4958 | 0 | } |
4959 | 0 | ++nClipRes[clipRes]; |
4960 | 0 | } |
4961 | 0 | if (nClipRes[splashClipPartial] || |
4962 | 0 | (nClipRes[splashClipAllInside] && nClipRes[splashClipAllOutside])) { |
4963 | 0 | opClipRes = splashClipPartial; |
4964 | 0 | } else if (nClipRes[splashClipAllInside]) { |
4965 | 0 | opClipRes = splashClipAllInside; |
4966 | 0 | } else { |
4967 | 0 | opClipRes = splashClipAllOutside; |
4968 | 0 | } |
4969 | |
|
4970 | 0 | delete xPath; |
4971 | 0 | } |
4972 | | |
4973 | | void Splash::drawStrokeSpan(SplashPipe *pipe, int x0, int x1, int y, |
4974 | 0 | GBool noClip) { |
4975 | 0 | int x; |
4976 | |
|
4977 | 0 | x = state->clip->getXMinI(state->strokeAdjust); |
4978 | 0 | if (x > x0) { |
4979 | 0 | x0 = x; |
4980 | 0 | } |
4981 | 0 | x = state->clip->getXMaxI(state->strokeAdjust); |
4982 | 0 | if (x < x1) { |
4983 | 0 | x1 = x; |
4984 | 0 | } |
4985 | 0 | if (x0 > x1) { |
4986 | 0 | return; |
4987 | 0 | } |
4988 | 0 | for (x = x0; x <= x1; ++x) { |
4989 | 0 | scanBuf[x] = 0xff; |
4990 | 0 | } |
4991 | 0 | if (!noClip) { |
4992 | 0 | if (!state->clip->clipSpanBinary(scanBuf, y, x0, x1, state->strokeAdjust)) { |
4993 | 0 | return; |
4994 | 0 | } |
4995 | 0 | } |
4996 | 0 | (this->*pipe->run)(pipe, x0, x1, y, scanBuf + x0, NULL); |
4997 | 0 | } |
4998 | | |
4999 | | void Splash::strokeWide(SplashPath *path, SplashCoord w, |
5000 | 0 | int lineCap, int lineJoin) { |
5001 | 0 | SplashPath *path2; |
5002 | |
|
5003 | 0 | path2 = makeStrokePath(path, w, lineCap, lineJoin, gFalse); |
5004 | 0 | fillWithPattern(path2, gFalse, state->strokePattern, state->strokeAlpha); |
5005 | 0 | delete path2; |
5006 | 0 | } |
5007 | | |
5008 | | SplashPath *Splash::flattenPath(SplashPath *path, SplashCoord *matrix, |
5009 | 0 | SplashCoord flatness) { |
5010 | 0 | SplashPath *fPath; |
5011 | 0 | SplashCoord flatness2; |
5012 | 0 | Guchar flag; |
5013 | 0 | int i; |
5014 | |
|
5015 | 0 | fPath = new SplashPath(); |
5016 | | #if USE_FIXEDPOINT |
5017 | | flatness2 = flatness; |
5018 | | #else |
5019 | 0 | flatness2 = flatness * flatness; |
5020 | 0 | #endif |
5021 | 0 | i = 0; |
5022 | 0 | while (i < path->length) { |
5023 | 0 | flag = path->flags[i]; |
5024 | 0 | if (flag & splashPathFirst) { |
5025 | 0 | fPath->moveTo(path->pts[i].x, path->pts[i].y); |
5026 | 0 | ++i; |
5027 | 0 | } else { |
5028 | 0 | if (flag & splashPathCurve) { |
5029 | 0 | flattenCurve(path->pts[i-1].x, path->pts[i-1].y, |
5030 | 0 | path->pts[i ].x, path->pts[i ].y, |
5031 | 0 | path->pts[i+1].x, path->pts[i+1].y, |
5032 | 0 | path->pts[i+2].x, path->pts[i+2].y, |
5033 | 0 | matrix, flatness2, fPath); |
5034 | 0 | i += 3; |
5035 | 0 | } else { |
5036 | 0 | fPath->lineTo(path->pts[i].x, path->pts[i].y); |
5037 | 0 | ++i; |
5038 | 0 | } |
5039 | 0 | if (path->flags[i-1] & splashPathClosed) { |
5040 | 0 | fPath->close(); |
5041 | 0 | } |
5042 | 0 | } |
5043 | 0 | } |
5044 | 0 | return fPath; |
5045 | 0 | } |
5046 | | |
5047 | | void Splash::flattenCurve(SplashCoord x0, SplashCoord y0, |
5048 | | SplashCoord x1, SplashCoord y1, |
5049 | | SplashCoord x2, SplashCoord y2, |
5050 | | SplashCoord x3, SplashCoord y3, |
5051 | | SplashCoord *matrix, SplashCoord flatness2, |
5052 | 0 | SplashPath *fPath) { |
5053 | 0 | SplashCoord cx[splashMaxCurveSplits + 1][3]; |
5054 | 0 | SplashCoord cy[splashMaxCurveSplits + 1][3]; |
5055 | 0 | int cNext[splashMaxCurveSplits + 1]; |
5056 | 0 | SplashCoord xl0, xl1, xl2, xr0, xr1, xr2, xr3, xx1, xx2, xh; |
5057 | 0 | SplashCoord yl0, yl1, yl2, yr0, yr1, yr2, yr3, yy1, yy2, yh; |
5058 | 0 | SplashCoord dx, dy, mx, my, tx, ty, d1, d2; |
5059 | 0 | int p1, p2, p3; |
5060 | | |
5061 | | // initial segment |
5062 | 0 | p1 = 0; |
5063 | 0 | p2 = splashMaxCurveSplits; |
5064 | 0 | cx[p1][0] = x0; cy[p1][0] = y0; |
5065 | 0 | cx[p1][1] = x1; cy[p1][1] = y1; |
5066 | 0 | cx[p1][2] = x2; cy[p1][2] = y2; |
5067 | 0 | cx[p2][0] = x3; cy[p2][0] = y3; |
5068 | 0 | cNext[p1] = p2; |
5069 | |
|
5070 | 0 | while (p1 < splashMaxCurveSplits) { |
5071 | | |
5072 | | // get the next segment |
5073 | 0 | xl0 = cx[p1][0]; yl0 = cy[p1][0]; |
5074 | 0 | xx1 = cx[p1][1]; yy1 = cy[p1][1]; |
5075 | 0 | xx2 = cx[p1][2]; yy2 = cy[p1][2]; |
5076 | 0 | p2 = cNext[p1]; |
5077 | 0 | xr3 = cx[p2][0]; yr3 = cy[p2][0]; |
5078 | | |
5079 | | // compute the distances (in device space) from the control points |
5080 | | // to the midpoint of the straight line (this is a bit of a hack, |
5081 | | // but it's much faster than computing the actual distances to the |
5082 | | // line) |
5083 | 0 | transform(matrix, (xl0 + xr3) * 0.5, (yl0 + yr3) * 0.5, &mx, &my); |
5084 | 0 | transform(matrix, xx1, yy1, &tx, &ty); |
5085 | | #if USE_FIXEDPOINT |
5086 | | d1 = splashDist(tx, ty, mx, my); |
5087 | | #else |
5088 | 0 | dx = tx - mx; |
5089 | 0 | dy = ty - my; |
5090 | 0 | d1 = dx*dx + dy*dy; |
5091 | 0 | #endif |
5092 | 0 | transform(matrix, xx2, yy2, &tx, &ty); |
5093 | | #if USE_FIXEDPOINT |
5094 | | d2 = splashDist(tx, ty, mx, my); |
5095 | | #else |
5096 | 0 | dx = tx - mx; |
5097 | 0 | dy = ty - my; |
5098 | 0 | d2 = dx*dx + dy*dy; |
5099 | 0 | #endif |
5100 | | |
5101 | | // if the curve is flat enough, or no more subdivisions are |
5102 | | // allowed, add the straight line segment |
5103 | 0 | if (p2 - p1 == 1 || (d1 <= flatness2 && d2 <= flatness2)) { |
5104 | 0 | fPath->lineTo(xr3, yr3); |
5105 | 0 | p1 = p2; |
5106 | | |
5107 | | // otherwise, subdivide the curve |
5108 | 0 | } else { |
5109 | 0 | xl1 = splashAvg(xl0, xx1); |
5110 | 0 | yl1 = splashAvg(yl0, yy1); |
5111 | 0 | xh = splashAvg(xx1, xx2); |
5112 | 0 | yh = splashAvg(yy1, yy2); |
5113 | 0 | xl2 = splashAvg(xl1, xh); |
5114 | 0 | yl2 = splashAvg(yl1, yh); |
5115 | 0 | xr2 = splashAvg(xx2, xr3); |
5116 | 0 | yr2 = splashAvg(yy2, yr3); |
5117 | 0 | xr1 = splashAvg(xh, xr2); |
5118 | 0 | yr1 = splashAvg(yh, yr2); |
5119 | 0 | xr0 = splashAvg(xl2, xr1); |
5120 | 0 | yr0 = splashAvg(yl2, yr1); |
5121 | | // add the new subdivision points |
5122 | 0 | p3 = (p1 + p2) / 2; |
5123 | 0 | cx[p1][1] = xl1; cy[p1][1] = yl1; |
5124 | 0 | cx[p1][2] = xl2; cy[p1][2] = yl2; |
5125 | 0 | cNext[p1] = p3; |
5126 | 0 | cx[p3][0] = xr0; cy[p3][0] = yr0; |
5127 | 0 | cx[p3][1] = xr1; cy[p3][1] = yr1; |
5128 | 0 | cx[p3][2] = xr2; cy[p3][2] = yr2; |
5129 | 0 | cNext[p3] = p2; |
5130 | 0 | } |
5131 | 0 | } |
5132 | 0 | } |
5133 | | |
5134 | 0 | SplashPath *Splash::makeDashedPath(SplashPath *path) { |
5135 | 0 | SplashPath *dPath; |
5136 | 0 | SplashCoord lineDashTotal; |
5137 | 0 | SplashCoord lineDashStartPhase, lineDashDist, segLen; |
5138 | 0 | SplashCoord x0, y0, x1, y1, xa, ya; |
5139 | 0 | GBool lineDashStartOn, lineDashEndOn, lineDashOn, newPath; |
5140 | 0 | int lineDashStartIdx, lineDashIdx, subpathStart, nDashes; |
5141 | 0 | int i, j, k; |
5142 | |
|
5143 | 0 | lineDashTotal = 0; |
5144 | 0 | for (i = 0; i < state->lineDashLength; ++i) { |
5145 | 0 | lineDashTotal += state->lineDash[i]; |
5146 | 0 | } |
5147 | | // Acrobat simply draws nothing if the dash array is [0] |
5148 | 0 | if (lineDashTotal == 0) { |
5149 | 0 | return new SplashPath(); |
5150 | 0 | } |
5151 | 0 | lineDashStartPhase = state->lineDashPhase; |
5152 | 0 | if (lineDashStartPhase > lineDashTotal * 2) { |
5153 | 0 | i = splashFloor(lineDashStartPhase / (lineDashTotal * 2)); |
5154 | 0 | lineDashStartPhase -= lineDashTotal * i * 2; |
5155 | 0 | } else if (lineDashStartPhase < 0) { |
5156 | 0 | i = splashCeil(-lineDashStartPhase / (lineDashTotal * 2)); |
5157 | 0 | lineDashStartPhase += lineDashTotal * i * 2; |
5158 | 0 | } |
5159 | 0 | i = splashFloor(lineDashStartPhase / lineDashTotal); |
5160 | 0 | lineDashStartPhase -= (SplashCoord)i * lineDashTotal; |
5161 | 0 | lineDashStartOn = gTrue; |
5162 | 0 | lineDashStartIdx = 0; |
5163 | 0 | if (lineDashStartPhase > 0) { |
5164 | 0 | while (lineDashStartPhase >= state->lineDash[lineDashStartIdx]) { |
5165 | 0 | lineDashStartOn = !lineDashStartOn; |
5166 | 0 | lineDashStartPhase -= state->lineDash[lineDashStartIdx]; |
5167 | 0 | if (++lineDashStartIdx == state->lineDashLength) { |
5168 | 0 | lineDashStartIdx = 0; |
5169 | 0 | } |
5170 | 0 | } |
5171 | 0 | } |
5172 | |
|
5173 | 0 | dPath = new SplashPath(); |
5174 | | |
5175 | | // process each subpath |
5176 | 0 | i = 0; |
5177 | 0 | while (i < path->length) { |
5178 | | |
5179 | | // find the end of the subpath |
5180 | 0 | for (j = i; |
5181 | 0 | j < path->length - 1 && !(path->flags[j] & splashPathLast); |
5182 | 0 | ++j) ; |
5183 | | |
5184 | | // initialize the dash parameters |
5185 | 0 | lineDashOn = lineDashStartOn; |
5186 | 0 | lineDashEndOn = lineDashStartOn; |
5187 | 0 | lineDashIdx = lineDashStartIdx; |
5188 | 0 | lineDashDist = state->lineDash[lineDashIdx] - lineDashStartPhase; |
5189 | 0 | subpathStart = dPath->length; |
5190 | 0 | nDashes = 0; |
5191 | | |
5192 | | // process each segment of the subpath |
5193 | 0 | newPath = gTrue; |
5194 | 0 | for (k = i; k < j; ++k) { |
5195 | | |
5196 | | // grab the segment |
5197 | 0 | x0 = path->pts[k].x; |
5198 | 0 | y0 = path->pts[k].y; |
5199 | 0 | x1 = path->pts[k+1].x; |
5200 | 0 | y1 = path->pts[k+1].y; |
5201 | 0 | segLen = splashDist(x0, y0, x1, y1); |
5202 | | |
5203 | | // process the segment |
5204 | 0 | while (segLen > 0) { |
5205 | | |
5206 | | // Special case for zero-length dash segments: draw a very |
5207 | | // short -- but not zero-length -- segment. This ensures that |
5208 | | // we get the correct behavior with butt and projecting line |
5209 | | // caps. The PS/PDF specs imply that zero-length segments are |
5210 | | // not drawn unless the line cap is round, but Acrobat and |
5211 | | // Ghostscript both draw very short segments (for butt caps) |
5212 | | // and squares (for projecting caps). |
5213 | 0 | if (lineDashDist == 0) { |
5214 | 0 | if (lineDashOn) { |
5215 | 0 | if (newPath) { |
5216 | 0 | dPath->moveTo(x0, y0); |
5217 | 0 | newPath = gFalse; |
5218 | 0 | ++nDashes; |
5219 | 0 | } |
5220 | 0 | xa = x0 + ((SplashCoord)0.001 / segLen) * (x1 - x0); |
5221 | 0 | ya = y0 + ((SplashCoord)0.001 / segLen) * (y1 - y0); |
5222 | 0 | dPath->lineTo(xa, ya); |
5223 | 0 | } |
5224 | |
|
5225 | 0 | } else if (lineDashDist >= segLen) { |
5226 | 0 | if (lineDashOn) { |
5227 | 0 | if (newPath) { |
5228 | 0 | dPath->moveTo(x0, y0); |
5229 | 0 | newPath = gFalse; |
5230 | 0 | ++nDashes; |
5231 | 0 | } |
5232 | 0 | dPath->lineTo(x1, y1); |
5233 | 0 | } |
5234 | 0 | lineDashDist -= segLen; |
5235 | 0 | segLen = 0; |
5236 | |
|
5237 | 0 | } else { |
5238 | 0 | xa = x0 + (lineDashDist / segLen) * (x1 - x0); |
5239 | 0 | ya = y0 + (lineDashDist / segLen) * (y1 - y0); |
5240 | 0 | if (lineDashOn) { |
5241 | 0 | if (newPath) { |
5242 | 0 | dPath->moveTo(x0, y0); |
5243 | 0 | newPath = gFalse; |
5244 | 0 | ++nDashes; |
5245 | 0 | } |
5246 | 0 | dPath->lineTo(xa, ya); |
5247 | 0 | } |
5248 | 0 | x0 = xa; |
5249 | 0 | y0 = ya; |
5250 | 0 | segLen -= lineDashDist; |
5251 | 0 | lineDashDist = 0; |
5252 | 0 | } |
5253 | |
|
5254 | 0 | lineDashEndOn = lineDashOn; |
5255 | | |
5256 | | // get the next entry in the dash array |
5257 | 0 | if (lineDashDist <= 0) { |
5258 | 0 | lineDashOn = !lineDashOn; |
5259 | 0 | if (++lineDashIdx == state->lineDashLength) { |
5260 | 0 | lineDashIdx = 0; |
5261 | 0 | } |
5262 | 0 | lineDashDist = state->lineDash[lineDashIdx]; |
5263 | 0 | newPath = gTrue; |
5264 | 0 | } |
5265 | 0 | } |
5266 | 0 | } |
5267 | | |
5268 | | // in a closed subpath, where the dash pattern is "on" at both the |
5269 | | // start and end of the subpath, we need to merge the start and |
5270 | | // end to get a proper line join |
5271 | 0 | if ((path->flags[j] & splashPathClosed) && |
5272 | 0 | lineDashStartOn && |
5273 | 0 | lineDashEndOn) { |
5274 | 0 | if (nDashes == 1) { |
5275 | 0 | dPath->close(); |
5276 | 0 | } else if (nDashes > 1) { |
5277 | 0 | k = subpathStart; |
5278 | 0 | do { |
5279 | 0 | ++k; |
5280 | 0 | dPath->lineTo(dPath->pts[k].x, dPath->pts[k].y); |
5281 | 0 | } while (!(dPath->flags[k] & splashPathLast)); |
5282 | 0 | ++k; |
5283 | 0 | memmove(&dPath->pts[subpathStart], &dPath->pts[k], |
5284 | 0 | (dPath->length - k) * sizeof(SplashPathPoint)); |
5285 | 0 | memmove(&dPath->flags[subpathStart], &dPath->flags[k], |
5286 | 0 | (dPath->length - k) * sizeof(Guchar)); |
5287 | 0 | dPath->length -= k - subpathStart; |
5288 | 0 | dPath->curSubpath -= k - subpathStart; |
5289 | 0 | } |
5290 | 0 | } |
5291 | |
|
5292 | 0 | i = j + 1; |
5293 | 0 | } |
5294 | |
|
5295 | 0 | return dPath; |
5296 | 0 | } |
5297 | | |
5298 | 0 | SplashError Splash::fill(SplashPath *path, GBool eo) { |
5299 | 0 | if (debugMode) { |
5300 | 0 | printf("fill [eo:%d]:\n", eo); |
5301 | 0 | dumpPath(path); |
5302 | 0 | } |
5303 | 0 | return fillWithPattern(path, eo, state->fillPattern, state->fillAlpha); |
5304 | 0 | } |
5305 | | |
5306 | | SplashError Splash::fillWithPattern(SplashPath *path, GBool eo, |
5307 | | SplashPattern *pattern, |
5308 | 0 | SplashCoord alpha) { |
5309 | 0 | SplashPipe pipe; |
5310 | 0 | SplashPath *path2; |
5311 | 0 | SplashXPath *xPath; |
5312 | 0 | SplashXPathScanner *scanner; |
5313 | 0 | int xMin, yMin, xMax, xMin2, xMax2, yMax, y, t; |
5314 | 0 | SplashClipResult clipRes; |
5315 | |
|
5316 | 0 | if (path->length == 0) { |
5317 | 0 | return splashErrEmptyPath; |
5318 | 0 | } |
5319 | 0 | if (pathAllOutside(path)) { |
5320 | 0 | opClipRes = splashClipAllOutside; |
5321 | 0 | return splashOk; |
5322 | 0 | } |
5323 | | |
5324 | 0 | path2 = tweakFillPath(path); |
5325 | |
|
5326 | 0 | xPath = new SplashXPath(path2, state->matrix, state->flatness, gTrue, |
5327 | 0 | state->enablePathSimplification, |
5328 | 0 | state->strokeAdjust); |
5329 | 0 | if (path2 != path) { |
5330 | 0 | delete path2; |
5331 | 0 | } |
5332 | 0 | xMin = xPath->getXMin(); |
5333 | 0 | yMin = xPath->getYMin(); |
5334 | 0 | xMax = xPath->getXMax(); |
5335 | 0 | yMax = xPath->getYMax(); |
5336 | 0 | if (xMin > xMax || yMin > yMax) { |
5337 | 0 | delete xPath; |
5338 | 0 | return splashOk; |
5339 | 0 | } |
5340 | 0 | scanner = new SplashXPathScanner(xPath, eo, yMin, yMax); |
5341 | | |
5342 | | // check clipping |
5343 | 0 | if ((clipRes = state->clip->testRect(xMin, yMin, xMax, yMax, |
5344 | 0 | state->strokeAdjust)) |
5345 | 0 | != splashClipAllOutside) { |
5346 | |
|
5347 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > xMin) { |
5348 | 0 | xMin = t; |
5349 | 0 | } |
5350 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust)) < xMax) { |
5351 | 0 | xMax = t; |
5352 | 0 | } |
5353 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > yMin) { |
5354 | 0 | yMin = t; |
5355 | 0 | } |
5356 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust)) < yMax) { |
5357 | 0 | yMax = t; |
5358 | 0 | } |
5359 | 0 | if (xMin > xMax || yMin > yMax) { |
5360 | 0 | delete scanner; |
5361 | 0 | delete xPath; |
5362 | 0 | return splashOk; |
5363 | 0 | } |
5364 | | |
5365 | 0 | pipeInit(&pipe, pattern, (Guchar)splashRound(alpha * 255), |
5366 | 0 | gTrue, gFalse); |
5367 | | |
5368 | | // draw the spans |
5369 | 0 | if (vectorAntialias && !inShading) { |
5370 | 0 | for (y = yMin; y <= yMax; ++y) { |
5371 | 0 | scanner->getSpan(scanBuf, y, xMin, xMax, &xMin2, &xMax2); |
5372 | 0 | if (xMin2 <= xMax2) { |
5373 | 0 | if (clipRes != splashClipAllInside) { |
5374 | 0 | state->clip->clipSpan(scanBuf, y, xMin2, xMax2, |
5375 | 0 | state->strokeAdjust); |
5376 | 0 | } |
5377 | 0 | (this->*pipe.run)(&pipe, xMin2, xMax2, y, scanBuf + xMin2, NULL); |
5378 | 0 | } |
5379 | 0 | } |
5380 | 0 | } else { |
5381 | 0 | for (y = yMin; y <= yMax; ++y) { |
5382 | 0 | scanner->getSpanBinary(scanBuf, y, xMin, xMax, &xMin2, &xMax2); |
5383 | 0 | if (xMin2 <= xMax2) { |
5384 | 0 | if (clipRes != splashClipAllInside) { |
5385 | 0 | state->clip->clipSpanBinary(scanBuf, y, xMin2, xMax2, |
5386 | 0 | state->strokeAdjust); |
5387 | 0 | } |
5388 | 0 | (this->*pipe.run)(&pipe, xMin2, xMax2, y, scanBuf + xMin2, NULL); |
5389 | 0 | } |
5390 | 0 | } |
5391 | 0 | } |
5392 | 0 | } |
5393 | 0 | opClipRes = clipRes; |
5394 | |
|
5395 | 0 | delete scanner; |
5396 | 0 | delete xPath; |
5397 | 0 | return splashOk; |
5398 | 0 | } |
5399 | | |
5400 | | // Applies various tweaks to a fill path: |
5401 | | // (1) add stroke adjust hints to a filled rectangle |
5402 | | // (2) applies a minimum width to a zero-width filled rectangle (so |
5403 | | // stroke adjustment works correctly |
5404 | | // (3) convert a degenerate fill ('moveto lineto fill' and 'moveto |
5405 | | // lineto closepath fill') to a minimum-width filled rectangle |
5406 | | // |
5407 | | // These tweaks only apply to paths with a single subpath. |
5408 | | // |
5409 | | // Returns either the unchanged input path or a new path (in which |
5410 | | // case the returned path must be deleted by the caller). |
5411 | 0 | SplashPath *Splash::tweakFillPath(SplashPath *path) { |
5412 | 0 | SplashPath *path2; |
5413 | 0 | SplashCoord xx0, yy0, xx1, yy1, dx, dy, d, wx, wy, w; |
5414 | 0 | int n; |
5415 | |
|
5416 | 0 | if (state->strokeAdjust == splashStrokeAdjustOff || path->hints) { |
5417 | 0 | return path; |
5418 | 0 | } |
5419 | | |
5420 | 0 | n = path->getLength(); |
5421 | 0 | if (!((n == 2) || |
5422 | 0 | (n == 3 && |
5423 | 0 | path->flags[1] == 0) || |
5424 | 0 | (n == 4 && |
5425 | 0 | path->flags[1] == 0 && |
5426 | 0 | path->flags[2] == 0) || |
5427 | 0 | (n == 5 && |
5428 | 0 | path->flags[1] == 0 && |
5429 | 0 | path->flags[2] == 0 && |
5430 | 0 | path->flags[3] == 0))) { |
5431 | 0 | return path; |
5432 | 0 | } |
5433 | | |
5434 | 0 | path2 = path; |
5435 | | |
5436 | | // degenerate fill (2 or 3 points) or rectangle of (nearly) zero |
5437 | | // width --> replace with a min-width rectangle and hint |
5438 | 0 | if (n == 2 || |
5439 | 0 | (n == 3 && (path->flags[0] & splashPathClosed)) || |
5440 | 0 | (n == 3 && (splashAbs(path->pts[0].x - path->pts[2].x) < 0.001 && |
5441 | 0 | splashAbs(path->pts[0].y - path->pts[2].y) < 0.001)) || |
5442 | 0 | ((n == 4 || |
5443 | 0 | (n == 5 && (path->flags[0] & splashPathClosed))) && |
5444 | 0 | ((splashAbs(path->pts[0].x - path->pts[1].x) < 0.001 && |
5445 | 0 | splashAbs(path->pts[0].y - path->pts[1].y) < 0.001 && |
5446 | 0 | splashAbs(path->pts[2].x - path->pts[3].x) < 0.001 && |
5447 | 0 | splashAbs(path->pts[2].y - path->pts[3].y) < 0.001) || |
5448 | 0 | (splashAbs(path->pts[0].x - path->pts[3].x) < 0.001 && |
5449 | 0 | splashAbs(path->pts[0].y - path->pts[3].y) < 0.001 && |
5450 | 0 | splashAbs(path->pts[1].x - path->pts[2].x) < 0.001 && |
5451 | 0 | splashAbs(path->pts[1].y - path->pts[2].y) < 0.001)))) { |
5452 | 0 | wx = state->matrix[0] + state->matrix[2]; |
5453 | 0 | wy = state->matrix[1] + state->matrix[3]; |
5454 | 0 | w = splashSqrt(wx*wx + wy*wy); |
5455 | 0 | if (w < 0.001) { |
5456 | 0 | w = 0; |
5457 | 0 | } else { |
5458 | | // min width is 0.1 -- this constant is minWidth * sqrt(2) |
5459 | 0 | w = (SplashCoord)0.1414 / w; |
5460 | 0 | } |
5461 | 0 | xx0 = path->pts[0].x; |
5462 | 0 | yy0 = path->pts[0].y; |
5463 | 0 | if (n <= 3) { |
5464 | 0 | xx1 = path->pts[1].x; |
5465 | 0 | yy1 = path->pts[1].y; |
5466 | 0 | } else { |
5467 | 0 | xx1 = path->pts[2].x; |
5468 | 0 | yy1 = path->pts[2].y; |
5469 | 0 | } |
5470 | 0 | dx = xx1 - xx0; |
5471 | 0 | dy = yy1 - yy0; |
5472 | 0 | d = splashSqrt(dx * dx + dy * dy); |
5473 | 0 | if (d < 0.001) { |
5474 | 0 | d = 0; |
5475 | 0 | } else { |
5476 | 0 | d = w / d; |
5477 | 0 | } |
5478 | 0 | dx *= d; |
5479 | 0 | dy *= d; |
5480 | 0 | path2 = new SplashPath(); |
5481 | 0 | path2->moveTo(xx0 + dy, yy0 - dx); |
5482 | 0 | path2->lineTo(xx1 + dy, yy1 - dx); |
5483 | 0 | path2->lineTo(xx1 - dy, yy1 + dx); |
5484 | 0 | path2->lineTo(xx0 - dy, yy0 + dx); |
5485 | 0 | path2->close(gTrue); |
5486 | 0 | path2->addStrokeAdjustHint(0, 2, 0, 4); |
5487 | 0 | path2->addStrokeAdjustHint(1, 3, 0, 4); |
5488 | | |
5489 | | // unclosed rectangle --> close and hint |
5490 | 0 | } else if (n == 4 && !(path->flags[0] & splashPathClosed)) { |
5491 | 0 | path2->close(gTrue); |
5492 | 0 | path2->addStrokeAdjustHint(0, 2, 0, 4); |
5493 | 0 | path2->addStrokeAdjustHint(1, 3, 0, 4); |
5494 | | |
5495 | | // closed rectangle --> hint |
5496 | 0 | } else if (n == 5 && (path->flags[0] & splashPathClosed)) { |
5497 | 0 | path2->addStrokeAdjustHint(0, 2, 0, 4); |
5498 | 0 | path2->addStrokeAdjustHint(1, 3, 0, 4); |
5499 | 0 | } |
5500 | |
|
5501 | 0 | return path2; |
5502 | 0 | } |
5503 | | |
5504 | 0 | GBool Splash::pathAllOutside(SplashPath *path) { |
5505 | 0 | SplashCoord xMin1, yMin1, xMax1, yMax1; |
5506 | 0 | SplashCoord xMin2, yMin2, xMax2, yMax2; |
5507 | 0 | SplashCoord x, y; |
5508 | 0 | int xMinI, yMinI, xMaxI, yMaxI; |
5509 | 0 | int i; |
5510 | |
|
5511 | 0 | xMin1 = xMax1 = path->pts[0].x; |
5512 | 0 | yMin1 = yMax1 = path->pts[0].y; |
5513 | 0 | for (i = 1; i < path->length; ++i) { |
5514 | 0 | if (path->pts[i].x < xMin1) { |
5515 | 0 | xMin1 = path->pts[i].x; |
5516 | 0 | } else if (path->pts[i].x > xMax1) { |
5517 | 0 | xMax1 = path->pts[i].x; |
5518 | 0 | } |
5519 | 0 | if (path->pts[i].y < yMin1) { |
5520 | 0 | yMin1 = path->pts[i].y; |
5521 | 0 | } else if (path->pts[i].y > yMax1) { |
5522 | 0 | yMax1 = path->pts[i].y; |
5523 | 0 | } |
5524 | 0 | } |
5525 | |
|
5526 | 0 | transform(state->matrix, xMin1, yMin1, &x, &y); |
5527 | 0 | xMin2 = xMax2 = x; |
5528 | 0 | yMin2 = yMax2 = y; |
5529 | 0 | transform(state->matrix, xMin1, yMax1, &x, &y); |
5530 | 0 | if (x < xMin2) { |
5531 | 0 | xMin2 = x; |
5532 | 0 | } else if (x > xMax2) { |
5533 | 0 | xMax2 = x; |
5534 | 0 | } |
5535 | 0 | if (y < yMin2) { |
5536 | 0 | yMin2 = y; |
5537 | 0 | } else if (y > yMax2) { |
5538 | 0 | yMax2 = y; |
5539 | 0 | } |
5540 | 0 | transform(state->matrix, xMax1, yMin1, &x, &y); |
5541 | 0 | if (x < xMin2) { |
5542 | 0 | xMin2 = x; |
5543 | 0 | } else if (x > xMax2) { |
5544 | 0 | xMax2 = x; |
5545 | 0 | } |
5546 | 0 | if (y < yMin2) { |
5547 | 0 | yMin2 = y; |
5548 | 0 | } else if (y > yMax2) { |
5549 | 0 | yMax2 = y; |
5550 | 0 | } |
5551 | 0 | transform(state->matrix, xMax1, yMax1, &x, &y); |
5552 | 0 | if (x < xMin2) { |
5553 | 0 | xMin2 = x; |
5554 | 0 | } else if (x > xMax2) { |
5555 | 0 | xMax2 = x; |
5556 | 0 | } |
5557 | 0 | if (y < yMin2) { |
5558 | 0 | yMin2 = y; |
5559 | 0 | } else if (y > yMax2) { |
5560 | 0 | yMax2 = y; |
5561 | 0 | } |
5562 | | // sanity-check the coordinates - xMinI/yMinI/xMaxI/yMaxI are |
5563 | | // 32-bit integers, so coords need to be < 2^31 |
5564 | 0 | SplashXPath::clampCoords(&xMin2, &yMin2); |
5565 | 0 | SplashXPath::clampCoords(&xMax2, &yMax2); |
5566 | 0 | xMinI = splashFloor(xMin2); |
5567 | 0 | yMinI = splashFloor(yMin2); |
5568 | 0 | xMaxI = splashFloor(xMax2); |
5569 | 0 | yMaxI = splashFloor(yMax2); |
5570 | |
|
5571 | 0 | return state->clip->testRect(xMinI, yMinI, xMaxI, yMaxI, |
5572 | 0 | state->strokeAdjust) == |
5573 | 0 | splashClipAllOutside; |
5574 | 0 | } |
5575 | | |
5576 | | SplashError Splash::fillChar(SplashCoord x, SplashCoord y, |
5577 | 0 | int c, SplashFont *font) { |
5578 | 0 | SplashGlyphBitmap glyph; |
5579 | 0 | SplashCoord xt, yt; |
5580 | 0 | int x0, y0, xFrac, yFrac; |
5581 | 0 | SplashError err; |
5582 | |
|
5583 | 0 | if (debugMode) { |
5584 | 0 | printf("fillChar: x=%.2f y=%.2f c=%3d=0x%02x='%c'\n", |
5585 | 0 | (double)x, (double)y, c, c, c); |
5586 | 0 | } |
5587 | 0 | transform(state->matrix, x, y, &xt, &yt); |
5588 | 0 | x0 = splashFloor(xt); |
5589 | 0 | xFrac = splashFloor((xt - x0) * splashFontFraction); |
5590 | 0 | y0 = splashFloor(yt); |
5591 | 0 | yFrac = splashFloor((yt - y0) * splashFontFraction); |
5592 | 0 | if (!font->getGlyph(c, xFrac, yFrac, &glyph)) { |
5593 | 0 | return splashErrNoGlyph; |
5594 | 0 | } |
5595 | 0 | err = fillGlyph2(x0, y0, &glyph); |
5596 | 0 | if (glyph.freeData) { |
5597 | 0 | gfree(glyph.data); |
5598 | 0 | } |
5599 | 0 | return err; |
5600 | 0 | } |
5601 | | |
5602 | | SplashError Splash::fillGlyph(SplashCoord x, SplashCoord y, |
5603 | 0 | SplashGlyphBitmap *glyph) { |
5604 | 0 | SplashCoord xt, yt; |
5605 | 0 | int x0, y0; |
5606 | |
|
5607 | 0 | transform(state->matrix, x, y, &xt, &yt); |
5608 | 0 | x0 = splashFloor(xt); |
5609 | 0 | y0 = splashFloor(yt); |
5610 | 0 | return fillGlyph2(x0, y0, glyph); |
5611 | 0 | } |
5612 | | |
5613 | 0 | SplashError Splash::fillGlyph2(int x0, int y0, SplashGlyphBitmap *glyph) { |
5614 | 0 | SplashPipe pipe; |
5615 | 0 | SplashClipResult clipRes; |
5616 | 0 | Guchar alpha; |
5617 | 0 | Guchar *p; |
5618 | 0 | int xMin, yMin, xMax, yMax; |
5619 | 0 | int x, y, xg, yg, xx, t; |
5620 | |
|
5621 | 0 | xg = x0 - glyph->x; |
5622 | 0 | yg = y0 - glyph->y; |
5623 | 0 | xMin = xg; |
5624 | 0 | xMax = xg + glyph->w - 1; |
5625 | 0 | yMin = yg; |
5626 | 0 | yMax = yg + glyph->h - 1; |
5627 | 0 | if ((clipRes = state->clip->testRect(xMin, yMin, xMax, yMax, |
5628 | 0 | state->strokeAdjust)) |
5629 | 0 | != splashClipAllOutside) { |
5630 | 0 | pipeInit(&pipe, state->fillPattern, |
5631 | 0 | (Guchar)splashRound(state->fillAlpha * 255), |
5632 | 0 | gTrue, gFalse); |
5633 | 0 | if (clipRes == splashClipAllInside) { |
5634 | 0 | if (glyph->aa) { |
5635 | 0 | p = glyph->data; |
5636 | 0 | for (y = yMin; y <= yMax; ++y) { |
5637 | 0 | (this->*pipe.run)(&pipe, xMin, xMax, y, |
5638 | 0 | glyph->data + (y - yMin) * glyph->w, NULL); |
5639 | 0 | } |
5640 | 0 | } else { |
5641 | 0 | p = glyph->data; |
5642 | 0 | for (y = yMin; y <= yMax; ++y) { |
5643 | 0 | for (x = xMin; x <= xMax; x += 8) { |
5644 | 0 | alpha = *p++; |
5645 | 0 | for (xx = 0; xx < 8 && x + xx <= xMax; ++xx) { |
5646 | 0 | scanBuf[x + xx] = (alpha & 0x80) ? 0xff : 0x00; |
5647 | 0 | alpha = (Guchar)(alpha << 1); |
5648 | 0 | } |
5649 | 0 | } |
5650 | 0 | (this->*pipe.run)(&pipe, xMin, xMax, y, scanBuf + xMin, NULL); |
5651 | 0 | } |
5652 | 0 | } |
5653 | 0 | } else { |
5654 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > xMin) { |
5655 | 0 | xMin = t; |
5656 | 0 | } |
5657 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust)) < xMax) { |
5658 | 0 | xMax = t; |
5659 | 0 | } |
5660 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > yMin) { |
5661 | 0 | yMin = t; |
5662 | 0 | } |
5663 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust)) < yMax) { |
5664 | 0 | yMax = t; |
5665 | 0 | } |
5666 | 0 | if (xMin <= xMax && yMin <= yMax) { |
5667 | 0 | if (glyph->aa) { |
5668 | 0 | for (y = yMin; y <= yMax; ++y) { |
5669 | 0 | p = glyph->data + (y - yg) * glyph->w + (xMin - xg); |
5670 | 0 | memcpy(scanBuf + xMin, p, xMax - xMin + 1); |
5671 | 0 | state->clip->clipSpan(scanBuf, y, xMin, xMax, |
5672 | 0 | state->strokeAdjust); |
5673 | 0 | (this->*pipe.run)(&pipe, xMin, xMax, y, scanBuf + xMin, NULL); |
5674 | 0 | } |
5675 | 0 | } else { |
5676 | 0 | for (y = yMin; y <= yMax; ++y) { |
5677 | 0 | p = glyph->data + (y - yg) * ((glyph->w + 7) >> 3) |
5678 | 0 | + ((xMin - xg) >> 3); |
5679 | 0 | alpha = *p++; |
5680 | 0 | xx = (xMin - xg) & 7; |
5681 | 0 | alpha = (Guchar)(alpha << xx); |
5682 | 0 | for (x = xMin; xx < 8 && x <= xMax; ++x, ++xx) { |
5683 | 0 | scanBuf[x] = (alpha & 0x80) ? 255 : 0; |
5684 | 0 | alpha = (Guchar)(alpha << 1); |
5685 | 0 | } |
5686 | 0 | for (; x <= xMax; x += 8) { |
5687 | 0 | alpha = *p++; |
5688 | 0 | for (xx = 0; xx < 8 && x + xx <= xMax; ++xx) { |
5689 | 0 | scanBuf[x + xx] = (alpha & 0x80) ? 255 : 0; |
5690 | 0 | alpha = (Guchar)(alpha << 1); |
5691 | 0 | } |
5692 | 0 | } |
5693 | 0 | state->clip->clipSpanBinary(scanBuf, y, xMin, xMax, |
5694 | 0 | state->strokeAdjust); |
5695 | 0 | (this->*pipe.run)(&pipe, xMin, xMax, y, scanBuf + xMin, NULL); |
5696 | 0 | } |
5697 | 0 | } |
5698 | 0 | } |
5699 | 0 | } |
5700 | 0 | } |
5701 | 0 | opClipRes = clipRes; |
5702 | |
|
5703 | 0 | return splashOk; |
5704 | 0 | } |
5705 | | |
5706 | | void Splash::getImageBounds(SplashCoord xyMin, SplashCoord xyMax, |
5707 | 0 | int *xyMinI, int *xyMaxI) { |
5708 | 0 | if (state->strokeAdjust == splashStrokeAdjustOff) { |
5709 | | // make sure the coords fit in 32-bit ints |
5710 | | #if USE_FIXEDPOINT |
5711 | | if (xyMin < -32767) { |
5712 | | xyMin = -32767; |
5713 | | } else if (xyMin > 32767) { |
5714 | | xyMin = 32767; |
5715 | | } |
5716 | | if (xyMax < -32767) { |
5717 | | xyMax = -32767; |
5718 | | } else if (xyMax > 32767) { |
5719 | | xyMax = 32767; |
5720 | | } |
5721 | | #else |
5722 | 0 | if (xyMin < -1e9) { |
5723 | 0 | xyMin = -1e9; |
5724 | 0 | } else if (xyMin > 1e9) { |
5725 | 0 | xyMin = 1e9; |
5726 | 0 | } |
5727 | 0 | if (xyMax < -1e9) { |
5728 | 0 | xyMax = -1e9; |
5729 | 0 | } else if (xyMax > 1e9) { |
5730 | 0 | xyMax = 1e9; |
5731 | 0 | } |
5732 | 0 | #endif |
5733 | 0 | *xyMinI = splashFloor(xyMin); |
5734 | 0 | *xyMaxI = splashFloor(xyMax); |
5735 | 0 | if (*xyMaxI <= *xyMinI) { |
5736 | 0 | *xyMaxI = *xyMinI + 1; |
5737 | 0 | } |
5738 | 0 | } else { |
5739 | 0 | splashStrokeAdjust(xyMin, xyMax, xyMinI, xyMaxI, state->strokeAdjust); |
5740 | 0 | } |
5741 | 0 | } |
5742 | | |
5743 | | struct SplashDrawImageMaskRowData { |
5744 | | SplashPipe pipe; |
5745 | | }; |
5746 | | |
5747 | | // The glyphMode flag is not currently used, but may be useful if the |
5748 | | // stroke adjustment behavior is changed. |
5749 | | SplashError Splash::fillImageMask(GString *imageTag, |
5750 | | SplashImageMaskSource src, void *srcData, |
5751 | | int w, int h, SplashCoord *mat, |
5752 | 0 | GBool glyphMode, GBool interpolate) { |
5753 | 0 | if (debugMode) { |
5754 | 0 | printf("fillImageMask: w=%d h=%d mat=[%.2f %.2f %.2f %.2f %.2f %.2f]\n", |
5755 | 0 | w, h, (double)mat[0], (double)mat[1], (double)mat[2], |
5756 | 0 | (double)mat[3], (double)mat[4], (double)mat[5]); |
5757 | 0 | } |
5758 | | |
5759 | | //--- check for singular matrix |
5760 | 0 | if (!splashCheckDet(mat[0], mat[1], mat[2], mat[3], 0.000001)) { |
5761 | 0 | return splashErrSingularMatrix; |
5762 | 0 | } |
5763 | | |
5764 | | //--- compute image bbox, check clipping |
5765 | 0 | GBool flipsOnly = splashAbs(mat[1]) <= 0.0001 && splashAbs(mat[2]) <= 0.0001; |
5766 | 0 | GBool horizFlip = gFalse; |
5767 | 0 | GBool vertFlip = gFalse; |
5768 | 0 | int xMin, yMin, xMax, yMax; |
5769 | 0 | if (flipsOnly) { |
5770 | 0 | horizFlip = mat[0] < 0; |
5771 | 0 | vertFlip = mat[3] < 0; |
5772 | 0 | if (vertFlip) { |
5773 | 0 | if (horizFlip) { // bottom-up, mirrored |
5774 | 0 | getImageBounds(mat[0] + mat[4], mat[4], &xMin, &xMax); |
5775 | 0 | getImageBounds(mat[3] + mat[5], mat[5], &yMin, &yMax); |
5776 | 0 | } else { // bottom-up |
5777 | 0 | getImageBounds(mat[4], mat[0] + mat[4], &xMin, &xMax); |
5778 | 0 | getImageBounds(mat[3] + mat[5], mat[5], &yMin, &yMax); |
5779 | 0 | } |
5780 | 0 | } else { |
5781 | 0 | if (horizFlip) { // top-down, mirrored |
5782 | 0 | getImageBounds(mat[0] + mat[4], mat[4], &xMin, &xMax); |
5783 | 0 | getImageBounds(mat[5], mat[3] + mat[5], &yMin, &yMax); |
5784 | 0 | } else { // top-down |
5785 | 0 | getImageBounds(mat[4], mat[0] + mat[4], &xMin, &xMax); |
5786 | 0 | getImageBounds(mat[5], mat[3] + mat[5], &yMin, &yMax); |
5787 | 0 | } |
5788 | 0 | } |
5789 | 0 | } else { |
5790 | 0 | int xx = splashRound(mat[4]); // (0,0) |
5791 | 0 | int yy = splashRound(mat[5]); |
5792 | 0 | xMin = xMax = xx; |
5793 | 0 | yMin = yMax = yy; |
5794 | 0 | xx = splashRound(mat[0] + mat[4]); // (1,0) |
5795 | 0 | yy = splashRound(mat[1] + mat[5]); |
5796 | 0 | if (xx < xMin) { |
5797 | 0 | xMin = xx; |
5798 | 0 | } else if (xx > xMax) { |
5799 | 0 | xMax = xx; |
5800 | 0 | } |
5801 | 0 | if (yy < yMin) { |
5802 | 0 | yMin = yy; |
5803 | 0 | } else if (yy > yMax) { |
5804 | 0 | yMax = yy; |
5805 | 0 | } |
5806 | 0 | xx = splashRound(mat[2] + mat[4]); // (0,1) |
5807 | 0 | yy = splashRound(mat[3] + mat[5]); |
5808 | 0 | if (xx < xMin) { |
5809 | 0 | xMin = xx; |
5810 | 0 | } else if (xx > xMax) { |
5811 | 0 | xMax = xx; |
5812 | 0 | } |
5813 | 0 | if (yy < yMin) { |
5814 | 0 | yMin = yy; |
5815 | 0 | } else if (yy > yMax) { |
5816 | 0 | yMax = yy; |
5817 | 0 | } |
5818 | 0 | xx = splashRound(mat[0] + mat[2] + mat[4]); // (1,1) |
5819 | 0 | yy = splashRound(mat[1] + mat[3] + mat[5]); |
5820 | 0 | if (xx < xMin) { |
5821 | 0 | xMin = xx; |
5822 | 0 | } else if (xx > xMax) { |
5823 | 0 | xMax = xx; |
5824 | 0 | } |
5825 | 0 | if (yy < yMin) { |
5826 | 0 | yMin = yy; |
5827 | 0 | } else if (yy > yMax) { |
5828 | 0 | yMax = yy; |
5829 | 0 | } |
5830 | 0 | if (xMax <= xMin) { |
5831 | 0 | xMax = xMin + 1; |
5832 | 0 | } |
5833 | 0 | if (yMax <= yMin) { |
5834 | 0 | yMax = yMin + 1; |
5835 | 0 | } |
5836 | 0 | } |
5837 | 0 | SplashClipResult clipRes = |
5838 | 0 | state->clip->testRect(xMin, yMin, xMax - 1, yMax - 1, |
5839 | 0 | state->strokeAdjust); |
5840 | | // If the scaled mask is much wider and/or taller than the clip |
5841 | | // region, we use the "arbitrary" scaling path, to avoid a |
5842 | | // potentially very slow loop in the flips-only path (which scans |
5843 | | // the full width and height of the scaled mask, regardless of the |
5844 | | // clip region). |
5845 | 0 | int clipW = state->clip->getXMaxI(state->strokeAdjust) |
5846 | 0 | - state->clip->getXMinI(state->strokeAdjust); |
5847 | 0 | int clipH = state->clip->getYMaxI(state->strokeAdjust) |
5848 | 0 | - state->clip->getYMinI(state->strokeAdjust); |
5849 | 0 | GBool veryLarge = ((xMax - xMin) / 8 > clipW && xMax - xMin > 1000) || |
5850 | 0 | ((yMax - yMin) / 8 > clipH && yMax - yMin > 1000); |
5851 | | |
5852 | | //--- set up the SplashDrawImageMaskRowData object and the pipes |
5853 | 0 | SplashDrawImageMaskRowData dd; |
5854 | 0 | pipeInit(&dd.pipe, state->fillPattern, |
5855 | 0 | (Guchar)splashRound(state->fillAlpha * 255), |
5856 | 0 | gTrue, gFalse); |
5857 | | |
5858 | | //--- choose the drawRow function |
5859 | 0 | SplashDrawImageMaskRowFunc drawRowFunc; |
5860 | 0 | if (clipRes == splashClipAllInside) { |
5861 | 0 | drawRowFunc = &Splash::drawImageMaskRowNoClip; |
5862 | 0 | } else { |
5863 | 0 | if (vectorAntialias) { |
5864 | 0 | drawRowFunc = &Splash::drawImageMaskRowClipAA; |
5865 | 0 | } else { |
5866 | 0 | drawRowFunc = &Splash::drawImageMaskRowClipNoAA; |
5867 | 0 | } |
5868 | 0 | } |
5869 | | |
5870 | | //--- horizontal/vertical flips only |
5871 | 0 | if (flipsOnly && !veryLarge) { |
5872 | 0 | if (clipRes != splashClipAllOutside) { |
5873 | 0 | int scaledWidth = xMax - xMin; |
5874 | 0 | int scaledHeight = yMax - yMin; |
5875 | 0 | ImageMaskScaler scaler(src, srcData, w, h, |
5876 | 0 | scaledWidth, scaledHeight, interpolate); |
5877 | 0 | Guchar *tmpLine = NULL; |
5878 | 0 | if (horizFlip) { |
5879 | 0 | tmpLine = (Guchar *)gmalloc(scaledWidth); |
5880 | 0 | } |
5881 | 0 | if (vertFlip) { |
5882 | 0 | if (horizFlip) { // bottom-up, mirrored |
5883 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
5884 | 0 | scaler.nextLine(); |
5885 | 0 | mirrorImageMaskRow(scaler.data(), tmpLine, scaledWidth); |
5886 | 0 | (this->*drawRowFunc)(&dd, tmpLine, |
5887 | 0 | xMin, yMax - 1 - y, scaledWidth); |
5888 | 0 | } |
5889 | 0 | } else { // bottom-up |
5890 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
5891 | 0 | scaler.nextLine(); |
5892 | 0 | (this->*drawRowFunc)(&dd, scaler.data(), |
5893 | 0 | xMin, yMax - 1 - y, scaledWidth); |
5894 | 0 | } |
5895 | 0 | } |
5896 | 0 | } else { |
5897 | 0 | if (horizFlip) { // top-down, mirrored |
5898 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
5899 | 0 | scaler.nextLine(); |
5900 | 0 | mirrorImageMaskRow(scaler.data(), tmpLine, scaledWidth); |
5901 | 0 | (this->*drawRowFunc)(&dd, tmpLine, |
5902 | 0 | xMin, yMin + y, scaledWidth); |
5903 | 0 | } |
5904 | 0 | } else { // top-down |
5905 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
5906 | 0 | scaler.nextLine(); |
5907 | 0 | (this->*drawRowFunc)(&dd, scaler.data(), |
5908 | 0 | xMin, yMin + y, scaledWidth); |
5909 | 0 | } |
5910 | 0 | } |
5911 | 0 | } |
5912 | 0 | gfree(tmpLine); |
5913 | 0 | } |
5914 | | |
5915 | | //--- arbitrary transform |
5916 | 0 | } else { |
5917 | | // estimate of size of scaled image |
5918 | 0 | int scaledWidth = splashRound(splashSqrt(mat[0] * mat[0] |
5919 | 0 | + mat[1] * mat[1])); |
5920 | 0 | int scaledHeight = splashRound(splashSqrt(mat[2] * mat[2] |
5921 | 0 | + mat[3] * mat[3])); |
5922 | 0 | if (scaledWidth < 1) { |
5923 | 0 | scaledWidth = 1; |
5924 | 0 | } |
5925 | 0 | if (scaledHeight < 1) { |
5926 | 0 | scaledHeight = 1; |
5927 | 0 | } |
5928 | 0 | GBool downscaling = gTrue; |
5929 | 0 | if (veryLarge || (scaledWidth >= w && scaledHeight >= h)) { |
5930 | 0 | downscaling = gFalse; |
5931 | 0 | scaledWidth = w; |
5932 | 0 | scaledHeight = h; |
5933 | 0 | } |
5934 | | |
5935 | | // compute mapping from device space to scaled image space |
5936 | 0 | SplashCoord mat1[6]; |
5937 | 0 | mat1[0] = mat[0] / scaledWidth; |
5938 | 0 | mat1[1] = mat[1] / scaledWidth; |
5939 | 0 | mat1[2] = mat[2] / scaledHeight; |
5940 | 0 | mat1[3] = mat[3] / scaledHeight; |
5941 | 0 | mat1[4] = mat[4]; |
5942 | 0 | mat1[5] = mat[5]; |
5943 | 0 | SplashCoord det = mat1[0] * mat1[3] - mat1[1] * mat1[2]; |
5944 | 0 | if (splashAbs(det) < 1e-6) { |
5945 | | // this should be caught by the singular matrix check in drawImage |
5946 | 0 | return splashErrSingularMatrix; |
5947 | 0 | } |
5948 | 0 | SplashCoord invMat[6]; |
5949 | 0 | invMat[0] = mat1[3] / det; |
5950 | 0 | invMat[1] = -mat1[1] / det; |
5951 | 0 | invMat[2] = -mat1[2] / det; |
5952 | 0 | invMat[3] = mat1[0] / det; |
5953 | | // the extra "+ 0.5 * (...)" terms are here because the |
5954 | | // drawImageArbitrary(No)Interp functions multiply by pixel |
5955 | | // centers, (x + 0.5, y + 0.5) |
5956 | 0 | invMat[4] = (mat1[2] * mat1[5] - mat1[3] * mat1[4]) / det |
5957 | 0 | + (invMat[0] + invMat[2]) * 0.5; |
5958 | 0 | invMat[5] = (mat1[1] * mat1[4] - mat1[0] * mat1[5]) / det |
5959 | 0 | + (invMat[1] + invMat[3]) * 0.5; |
5960 | | |
5961 | | // if downscaling: store the downscaled image mask |
5962 | | // if upscaling: store the unscaled image mask |
5963 | 0 | Guchar *scaledMask = (Guchar *)gmallocn(scaledHeight, scaledWidth); |
5964 | 0 | if (downscaling) { |
5965 | 0 | ImageMaskScaler scaler(src, srcData, w, h, |
5966 | 0 | scaledWidth, scaledHeight, interpolate); |
5967 | 0 | Guchar *ptr = scaledMask; |
5968 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
5969 | 0 | scaler.nextLine(); |
5970 | 0 | memcpy(ptr, scaler.data(), scaledWidth); |
5971 | 0 | ptr += scaledWidth; |
5972 | 0 | } |
5973 | 0 | } else { |
5974 | 0 | Guchar *ptr = scaledMask; |
5975 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
5976 | 0 | (*src)(srcData, ptr); |
5977 | 0 | for (int x = 0; x < scaledWidth; ++x) { |
5978 | 0 | *ptr = (Guchar)(*ptr * 255); |
5979 | 0 | ++ptr; |
5980 | 0 | } |
5981 | 0 | } |
5982 | 0 | } |
5983 | | |
5984 | | // draw it |
5985 | 0 | if (interpolate) { |
5986 | 0 | drawImageMaskArbitraryInterp(scaledMask, |
5987 | 0 | &dd, drawRowFunc, invMat, |
5988 | 0 | scaledWidth, scaledHeight, |
5989 | 0 | xMin, yMin, xMax, yMax); |
5990 | 0 | } else { |
5991 | 0 | drawImageMaskArbitraryNoInterp(scaledMask, |
5992 | 0 | &dd, drawRowFunc, invMat, |
5993 | 0 | scaledWidth, scaledHeight, |
5994 | 0 | xMin, yMin, xMax, yMax); |
5995 | 0 | } |
5996 | | |
5997 | | // free the downscaled/unscaled image |
5998 | 0 | gfree(scaledMask); |
5999 | 0 | } |
6000 | | |
6001 | 0 | return splashOk; |
6002 | 0 | } |
6003 | | |
6004 | | void Splash::drawImageMaskArbitraryNoInterp( |
6005 | | Guchar *scaledMask, |
6006 | | SplashDrawImageMaskRowData *dd, |
6007 | | SplashDrawImageMaskRowFunc drawRowFunc, |
6008 | | SplashCoord *invMat, |
6009 | | int scaledWidth, int scaledHeight, |
6010 | 0 | int xMin, int yMin, int xMax, int yMax) { |
6011 | 0 | int tt = state->clip->getXMinI(state->strokeAdjust); |
6012 | 0 | if (tt > xMin) { |
6013 | 0 | xMin = tt; |
6014 | 0 | } |
6015 | 0 | tt = state->clip->getXMaxI(state->strokeAdjust) + 1; |
6016 | 0 | if (tt < xMax) { |
6017 | 0 | xMax = tt; |
6018 | 0 | } |
6019 | 0 | tt = state->clip->getYMinI(state->strokeAdjust); |
6020 | 0 | if (tt > yMin) { |
6021 | 0 | yMin = tt; |
6022 | 0 | } |
6023 | 0 | tt = state->clip->getYMaxI(state->strokeAdjust) + 1; |
6024 | 0 | if (tt < yMax) { |
6025 | 0 | yMax = tt; |
6026 | 0 | } |
6027 | 0 | if (xMax <= xMin || yMax <= yMin) { |
6028 | 0 | return; |
6029 | 0 | } |
6030 | | |
6031 | 0 | Guchar *buf = (Guchar *)gmalloc(xMax - xMin); |
6032 | |
|
6033 | 0 | for (int y = yMin; y < yMax; ++y) { |
6034 | 0 | int rowMin = xMax; |
6035 | 0 | int rowMax = 0; |
6036 | 0 | for (int x = xMin; x < xMax; ++x) { |
6037 | | // note: invMat includes a "+0.5" factor so that this is really |
6038 | | // a multiply by (x+0.5, y+0.5) |
6039 | 0 | int xx = splashFloor((SplashCoord)x * invMat[0] |
6040 | 0 | + (SplashCoord)y * invMat[2] + invMat[4]); |
6041 | 0 | int yy = splashFloor((SplashCoord)x * invMat[1] |
6042 | 0 | + (SplashCoord)y * invMat[3] + invMat[5]); |
6043 | 0 | if (xx >= 0 && xx < scaledWidth && |
6044 | 0 | yy >= 0 && yy < scaledHeight) { |
6045 | 0 | Guchar *p = scaledMask + (yy * scaledWidth + xx); |
6046 | 0 | Guchar *q = buf + (x - xMin); |
6047 | 0 | *q = *p; |
6048 | 0 | if (x < rowMin) { |
6049 | 0 | rowMin = x; |
6050 | 0 | } |
6051 | 0 | rowMax = x + 1; |
6052 | 0 | } |
6053 | 0 | } |
6054 | 0 | if (rowMin < rowMax) { |
6055 | 0 | (this->*drawRowFunc)(dd, buf + (rowMin - xMin), |
6056 | 0 | rowMin, y, rowMax - rowMin); |
6057 | 0 | } |
6058 | 0 | } |
6059 | |
|
6060 | 0 | gfree(buf); |
6061 | 0 | } |
6062 | | |
6063 | | void Splash::drawImageMaskArbitraryInterp( |
6064 | | Guchar *scaledMask, |
6065 | | SplashDrawImageMaskRowData *dd, |
6066 | | SplashDrawImageMaskRowFunc drawRowFunc, |
6067 | | SplashCoord *invMat, |
6068 | | int scaledWidth, int scaledHeight, |
6069 | 0 | int xMin, int yMin, int xMax, int yMax) { |
6070 | 0 | int tt = state->clip->getXMinI(state->strokeAdjust); |
6071 | 0 | if (tt > xMin) { |
6072 | 0 | xMin = tt; |
6073 | 0 | } |
6074 | 0 | tt = state->clip->getXMaxI(state->strokeAdjust) + 1; |
6075 | 0 | if (tt < xMax) { |
6076 | 0 | xMax = tt; |
6077 | 0 | } |
6078 | 0 | tt = state->clip->getYMinI(state->strokeAdjust); |
6079 | 0 | if (tt > yMin) { |
6080 | 0 | yMin = tt; |
6081 | 0 | } |
6082 | 0 | tt = state->clip->getYMaxI(state->strokeAdjust) + 1; |
6083 | 0 | if (tt < yMax) { |
6084 | 0 | yMax = tt; |
6085 | 0 | } |
6086 | 0 | if (xMax <= xMin || yMax <= yMin) { |
6087 | 0 | return; |
6088 | 0 | } |
6089 | | |
6090 | 0 | Guchar *buf = (Guchar *)gmalloc(xMax - xMin); |
6091 | |
|
6092 | 0 | for (int y = yMin; y < yMax; ++y) { |
6093 | 0 | int rowMin = xMax; |
6094 | 0 | int rowMax = 0; |
6095 | 0 | for (int x = xMin; x < xMax; ++x) { |
6096 | | // note: invMat includes a "+0.5" factor so that this is really |
6097 | | // a multiply by (x+0.5, y+0.5) |
6098 | 0 | SplashCoord xs = (SplashCoord)x * invMat[0] |
6099 | 0 | + (SplashCoord)y * invMat[2] + invMat[4]; |
6100 | 0 | SplashCoord ys = (SplashCoord)x * invMat[1] |
6101 | 0 | + (SplashCoord)y * invMat[3] + invMat[5]; |
6102 | 0 | int x0 = splashFloor(xs - 0.5); |
6103 | 0 | int x1 = x0 + 1; |
6104 | 0 | int y0 = splashFloor(ys - 0.5); |
6105 | 0 | int y1 = y0 + 1; |
6106 | 0 | if (x1 >= 0 && x0 < scaledWidth && y1 >= 0 && y0 < scaledHeight) { |
6107 | 0 | SplashCoord sx0 = (SplashCoord)x1 + 0.5 - xs; |
6108 | 0 | SplashCoord sx1 = (SplashCoord)1 - sx0; |
6109 | 0 | SplashCoord sy0 = (SplashCoord)y1 + 0.5 - ys; |
6110 | 0 | SplashCoord sy1 = (SplashCoord)1 - sy0; |
6111 | 0 | if (x0 < 0) { |
6112 | 0 | x0 = 0; |
6113 | 0 | } |
6114 | 0 | if (x1 >= scaledWidth) { |
6115 | 0 | x1 = scaledWidth - 1; |
6116 | 0 | } |
6117 | 0 | if (y0 < 0) { |
6118 | 0 | y0 = 0; |
6119 | 0 | } |
6120 | 0 | if (y1 >= scaledHeight) { |
6121 | 0 | y1 = scaledHeight - 1; |
6122 | 0 | } |
6123 | 0 | Guchar *p00 = scaledMask + (y0 * scaledWidth + x0); |
6124 | 0 | Guchar *p10 = scaledMask + (y0 * scaledWidth + x1); |
6125 | 0 | Guchar *p01 = scaledMask + (y1 * scaledWidth + x0); |
6126 | 0 | Guchar *p11 = scaledMask + (y1 * scaledWidth + x1); |
6127 | 0 | Guchar *q = buf + (x - xMin); |
6128 | 0 | *q = (Guchar)(int)(sx0 * (sy0 * (int)*p00 + sy1 * (int)*p01) + |
6129 | 0 | sx1 * (sy0 * (int)*p10 + sy1 * (int)*p11)); |
6130 | 0 | if (x < rowMin) { |
6131 | 0 | rowMin = x; |
6132 | 0 | } |
6133 | 0 | rowMax = x + 1; |
6134 | 0 | } |
6135 | 0 | } |
6136 | 0 | if (rowMin < rowMax) { |
6137 | 0 | (this->*drawRowFunc)(dd, buf + (rowMin - xMin), |
6138 | 0 | rowMin, y, rowMax - rowMin); |
6139 | 0 | } |
6140 | 0 | } |
6141 | |
|
6142 | 0 | gfree(buf); |
6143 | 0 | } |
6144 | | |
6145 | 0 | void Splash::mirrorImageMaskRow(Guchar *maskIn, Guchar *maskOut, int width) { |
6146 | 0 | Guchar *p, *q; |
6147 | |
|
6148 | 0 | p = maskIn; |
6149 | 0 | q = maskOut + (width - 1); |
6150 | 0 | for (int i = 0; i < width; ++i) { |
6151 | 0 | *q = *p; |
6152 | 0 | ++p; |
6153 | 0 | --q; |
6154 | 0 | } |
6155 | 0 | } |
6156 | | |
6157 | | void Splash::drawImageMaskRowNoClip(SplashDrawImageMaskRowData *data, |
6158 | | Guchar *maskData, |
6159 | 0 | int x, int y, int width) { |
6160 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, maskData, NULL); |
6161 | 0 | } |
6162 | | |
6163 | | void Splash::drawImageMaskRowClipNoAA(SplashDrawImageMaskRowData *data, |
6164 | | Guchar *maskData, |
6165 | 0 | int x, int y, int width) { |
6166 | 0 | if (y < 0 || y >= bitmap->height) { |
6167 | 0 | return; |
6168 | 0 | } |
6169 | 0 | if (x < 0) { |
6170 | 0 | maskData -= x; |
6171 | 0 | width += x; |
6172 | 0 | x = 0; |
6173 | 0 | } |
6174 | 0 | if (x + width > bitmap->width) { |
6175 | 0 | width = bitmap->width - x; |
6176 | 0 | } |
6177 | 0 | if (width <= 0) { |
6178 | 0 | return; |
6179 | 0 | } |
6180 | 0 | memcpy(scanBuf + x, maskData, width); |
6181 | 0 | state->clip->clipSpanBinary(scanBuf, y, x, x + width - 1, |
6182 | 0 | state->strokeAdjust); |
6183 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6184 | 0 | scanBuf + x, NULL); |
6185 | 0 | } |
6186 | | |
6187 | | void Splash::drawImageMaskRowClipAA(SplashDrawImageMaskRowData *data, |
6188 | | Guchar *maskData, |
6189 | 0 | int x, int y, int width) { |
6190 | 0 | if (y < 0 || y >= bitmap->height) { |
6191 | 0 | return; |
6192 | 0 | } |
6193 | 0 | if (x < 0) { |
6194 | 0 | maskData -= x; |
6195 | 0 | width += x; |
6196 | 0 | x = 0; |
6197 | 0 | } |
6198 | 0 | if (x + width > bitmap->width) { |
6199 | 0 | width = bitmap->width - x; |
6200 | 0 | } |
6201 | 0 | if (width <= 0) { |
6202 | 0 | return; |
6203 | 0 | } |
6204 | 0 | memcpy(scanBuf + x, maskData, width); |
6205 | 0 | state->clip->clipSpan(scanBuf, y, x, x + width - 1, state->strokeAdjust); |
6206 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6207 | 0 | scanBuf + x, NULL); |
6208 | 0 | } |
6209 | | |
6210 | | struct SplashDrawImageRowData { |
6211 | | int nComps; |
6212 | | GBool srcAlpha; |
6213 | | SplashPipe pipe; |
6214 | | }; |
6215 | | |
6216 | | SplashError Splash::drawImage(GString *imageTag, |
6217 | | SplashImageSource src, void *srcData, |
6218 | | SplashColorMode srcMode, GBool srcAlpha, |
6219 | | int w, int h, SplashCoord *mat, |
6220 | 0 | GBool interpolate) { |
6221 | 0 | if (debugMode) { |
6222 | 0 | printf("drawImage: srcMode=%d srcAlpha=%d w=%d h=%d mat=[%.2f %.2f %.2f %.2f %.2f %.2f]\n", |
6223 | 0 | srcMode, srcAlpha, w, h, (double)mat[0], (double)mat[1], (double)mat[2], |
6224 | 0 | (double)mat[3], (double)mat[4], (double)mat[5]); |
6225 | 0 | } |
6226 | | |
6227 | | //--- check color modes |
6228 | 0 | GBool ok = gFalse; |
6229 | 0 | int nComps = 0; |
6230 | 0 | switch (bitmap->mode) { |
6231 | 0 | case splashModeMono1: |
6232 | 0 | case splashModeMono8: |
6233 | 0 | ok = srcMode == splashModeMono8; |
6234 | 0 | nComps = 1; |
6235 | 0 | break; |
6236 | 0 | case splashModeRGB8: |
6237 | 0 | case splashModeBGR8: |
6238 | 0 | ok = srcMode == splashModeRGB8; |
6239 | 0 | nComps = 3; |
6240 | 0 | break; |
6241 | 0 | #if SPLASH_CMYK |
6242 | 0 | case splashModeCMYK8: |
6243 | 0 | ok = srcMode == splashModeCMYK8; |
6244 | 0 | nComps = 4; |
6245 | 0 | break; |
6246 | 0 | #endif |
6247 | 0 | default: |
6248 | 0 | ok = gFalse; |
6249 | 0 | break; |
6250 | 0 | } |
6251 | 0 | if (!ok) { |
6252 | 0 | return splashErrModeMismatch; |
6253 | 0 | } |
6254 | | |
6255 | | //--- check for singular matrix |
6256 | 0 | if (!splashCheckDet(mat[0], mat[1], mat[2], mat[3], 0.000001)) { |
6257 | 0 | return splashErrSingularMatrix; |
6258 | 0 | } |
6259 | | |
6260 | | //--- compute image bbox, check clipping |
6261 | 0 | GBool flipsOnly = splashAbs(mat[1]) <= 0.0001 && splashAbs(mat[2]) <= 0.0001; |
6262 | 0 | GBool horizFlip = gFalse; |
6263 | 0 | GBool vertFlip = gFalse; |
6264 | 0 | int xMin, yMin, xMax, yMax; |
6265 | 0 | if (flipsOnly) { |
6266 | 0 | horizFlip = mat[0] < 0; |
6267 | 0 | vertFlip = mat[3] < 0; |
6268 | 0 | if (vertFlip) { |
6269 | 0 | if (horizFlip) { // bottom-up, mirrored |
6270 | 0 | getImageBounds(mat[0] + mat[4], mat[4], &xMin, &xMax); |
6271 | 0 | getImageBounds(mat[3] + mat[5], mat[5], &yMin, &yMax); |
6272 | 0 | } else { // bottom-up |
6273 | 0 | getImageBounds(mat[4], mat[0] + mat[4], &xMin, &xMax); |
6274 | 0 | getImageBounds(mat[3] + mat[5], mat[5], &yMin, &yMax); |
6275 | 0 | } |
6276 | 0 | } else { |
6277 | 0 | if (horizFlip) { // top-down, mirrored |
6278 | 0 | getImageBounds(mat[0] + mat[4], mat[4], &xMin, &xMax); |
6279 | 0 | getImageBounds(mat[5], mat[3] + mat[5], &yMin, &yMax); |
6280 | 0 | } else { // top-down |
6281 | 0 | getImageBounds(mat[4], mat[0] + mat[4], &xMin, &xMax); |
6282 | 0 | getImageBounds(mat[5], mat[3] + mat[5], &yMin, &yMax); |
6283 | 0 | } |
6284 | 0 | } |
6285 | 0 | } else { |
6286 | 0 | int xx = splashRound(mat[4]); // (0,0) |
6287 | 0 | int yy = splashRound(mat[5]); |
6288 | 0 | xMin = xMax = xx; |
6289 | 0 | yMin = yMax = yy; |
6290 | 0 | xx = splashRound(mat[0] + mat[4]); // (1,0) |
6291 | 0 | yy = splashRound(mat[1] + mat[5]); |
6292 | 0 | if (xx < xMin) { |
6293 | 0 | xMin = xx; |
6294 | 0 | } else if (xx > xMax) { |
6295 | 0 | xMax = xx; |
6296 | 0 | } |
6297 | 0 | if (yy < yMin) { |
6298 | 0 | yMin = yy; |
6299 | 0 | } else if (yy > yMax) { |
6300 | 0 | yMax = yy; |
6301 | 0 | } |
6302 | 0 | xx = splashRound(mat[2] + mat[4]); // (0,1) |
6303 | 0 | yy = splashRound(mat[3] + mat[5]); |
6304 | 0 | if (xx < xMin) { |
6305 | 0 | xMin = xx; |
6306 | 0 | } else if (xx > xMax) { |
6307 | 0 | xMax = xx; |
6308 | 0 | } |
6309 | 0 | if (yy < yMin) { |
6310 | 0 | yMin = yy; |
6311 | 0 | } else if (yy > yMax) { |
6312 | 0 | yMax = yy; |
6313 | 0 | } |
6314 | 0 | xx = splashRound(mat[0] + mat[2] + mat[4]); // (1,1) |
6315 | 0 | yy = splashRound(mat[1] + mat[3] + mat[5]); |
6316 | 0 | if (xx < xMin) { |
6317 | 0 | xMin = xx; |
6318 | 0 | } else if (xx > xMax) { |
6319 | 0 | xMax = xx; |
6320 | 0 | } |
6321 | 0 | if (yy < yMin) { |
6322 | 0 | yMin = yy; |
6323 | 0 | } else if (yy > yMax) { |
6324 | 0 | yMax = yy; |
6325 | 0 | } |
6326 | 0 | if (xMax <= xMin) { |
6327 | 0 | xMax = xMin + 1; |
6328 | 0 | } |
6329 | 0 | if (yMax <= yMin) { |
6330 | 0 | yMax = yMin + 1; |
6331 | 0 | } |
6332 | 0 | } |
6333 | 0 | SplashClipResult clipRes = |
6334 | 0 | state->clip->testRect(xMin, yMin, xMax - 1, yMax - 1, |
6335 | 0 | state->strokeAdjust); |
6336 | | // If the scaled image is much wider and/or taller than the clip |
6337 | | // region, we use the arbitrary transform path, to avoid a |
6338 | | // potentially very slow loop in the flips-only path (which scans |
6339 | | // the full width and height of the scaled image, regardless of the |
6340 | | // clip region). |
6341 | 0 | int clipW = state->clip->getXMaxI(state->strokeAdjust) |
6342 | 0 | - state->clip->getXMinI(state->strokeAdjust); |
6343 | 0 | int clipH = state->clip->getYMaxI(state->strokeAdjust) |
6344 | 0 | - state->clip->getYMinI(state->strokeAdjust); |
6345 | 0 | GBool veryLarge = ((xMax - xMin) / 8 > clipW && xMax - xMin > 1000) || |
6346 | 0 | ((yMax - yMin) / 8 > clipH && yMax - yMin > 1000); |
6347 | | |
6348 | | //--- set up the SplashDrawImageRowData object and the pipes |
6349 | 0 | SplashDrawImageRowData dd; |
6350 | 0 | dd.nComps = nComps; |
6351 | 0 | dd.srcAlpha = srcAlpha; |
6352 | 0 | pipeInit(&dd.pipe, NULL, |
6353 | 0 | (Guchar)splashRound(state->fillAlpha * 255), |
6354 | 0 | clipRes != splashClipAllInside || srcAlpha, |
6355 | 0 | gFalse); |
6356 | | |
6357 | | //--- choose the drawRow function |
6358 | 0 | SplashDrawImageRowFunc drawRowFunc; |
6359 | 0 | if (clipRes == splashClipAllInside) { |
6360 | 0 | if (srcAlpha) { |
6361 | 0 | drawRowFunc = &Splash::drawImageRowNoClipAlpha; |
6362 | 0 | } else { |
6363 | 0 | drawRowFunc = &Splash::drawImageRowNoClipNoAlpha; |
6364 | 0 | } |
6365 | 0 | } else { |
6366 | 0 | if (srcAlpha) { |
6367 | 0 | if (vectorAntialias) { |
6368 | 0 | drawRowFunc = &Splash::drawImageRowClipAlphaAA; |
6369 | 0 | } else { |
6370 | 0 | drawRowFunc = &Splash::drawImageRowClipAlphaNoAA; |
6371 | 0 | } |
6372 | 0 | } else { |
6373 | 0 | if (vectorAntialias) { |
6374 | 0 | drawRowFunc = &Splash::drawImageRowClipNoAlphaAA; |
6375 | 0 | } else { |
6376 | 0 | drawRowFunc = &Splash::drawImageRowClipNoAlphaNoAA; |
6377 | 0 | } |
6378 | 0 | } |
6379 | 0 | } |
6380 | | |
6381 | | //--- horizontal/vertical flips only |
6382 | 0 | if (flipsOnly && !veryLarge) { |
6383 | 0 | if (clipRes != splashClipAllOutside) { |
6384 | 0 | int scaledWidth = xMax - xMin; |
6385 | 0 | int scaledHeight = yMax - yMin; |
6386 | 0 | ImageScaler *scaler = getImageScaler(imageTag, src, srcData, |
6387 | 0 | w, h, nComps, |
6388 | 0 | scaledWidth, scaledHeight, |
6389 | 0 | srcMode, srcAlpha, interpolate); |
6390 | 0 | Guchar *tmpLine = NULL; |
6391 | 0 | Guchar *tmpAlphaLine = NULL; |
6392 | 0 | if (horizFlip) { |
6393 | 0 | tmpLine = (Guchar *)gmallocn(scaledWidth, nComps); |
6394 | 0 | if (srcAlpha) { |
6395 | 0 | tmpAlphaLine = (Guchar *)gmalloc(scaledWidth); |
6396 | 0 | } |
6397 | 0 | } |
6398 | 0 | if (vertFlip) { |
6399 | 0 | if (horizFlip) { // bottom-up, mirrored |
6400 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6401 | 0 | scaler->nextLine(); |
6402 | 0 | mirrorImageRow(scaler->colorData(), scaler->alphaData(), |
6403 | 0 | tmpLine, tmpAlphaLine, |
6404 | 0 | scaledWidth, nComps, srcAlpha); |
6405 | 0 | (this->*drawRowFunc)(&dd, tmpLine, tmpAlphaLine, |
6406 | 0 | xMin, yMax - 1 - y, scaledWidth); |
6407 | 0 | } |
6408 | 0 | } else { // bottom-up |
6409 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6410 | 0 | scaler->nextLine(); |
6411 | 0 | (this->*drawRowFunc)(&dd, scaler->colorData(), scaler->alphaData(), |
6412 | 0 | xMin, yMax - 1 - y, scaledWidth); |
6413 | 0 | } |
6414 | 0 | } |
6415 | 0 | } else { |
6416 | 0 | if (horizFlip) { // top-down, mirrored |
6417 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6418 | 0 | scaler->nextLine(); |
6419 | 0 | mirrorImageRow(scaler->colorData(), scaler->alphaData(), |
6420 | 0 | tmpLine, tmpAlphaLine, |
6421 | 0 | scaledWidth, nComps, srcAlpha); |
6422 | 0 | (this->*drawRowFunc)(&dd, tmpLine, tmpAlphaLine, |
6423 | 0 | xMin, yMin + y, scaledWidth); |
6424 | 0 | } |
6425 | 0 | } else { // top-down |
6426 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6427 | 0 | scaler->nextLine(); |
6428 | 0 | (this->*drawRowFunc)(&dd, scaler->colorData(), scaler->alphaData(), |
6429 | 0 | xMin, yMin + y, scaledWidth); |
6430 | 0 | } |
6431 | 0 | } |
6432 | 0 | } |
6433 | 0 | gfree(tmpLine); |
6434 | 0 | gfree(tmpAlphaLine); |
6435 | 0 | delete scaler; |
6436 | 0 | } |
6437 | | |
6438 | | //--- arbitrary transform |
6439 | 0 | } else { |
6440 | | // estimate of size of scaled image |
6441 | 0 | int scaledWidth = splashRound(splashSqrt(mat[0] * mat[0] |
6442 | 0 | + mat[1] * mat[1])); |
6443 | 0 | int scaledHeight = splashRound(splashSqrt(mat[2] * mat[2] |
6444 | 0 | + mat[3] * mat[3])); |
6445 | 0 | if (scaledWidth < 1) { |
6446 | 0 | scaledWidth = 1; |
6447 | 0 | } |
6448 | 0 | if (scaledHeight < 1) { |
6449 | 0 | scaledHeight = 1; |
6450 | 0 | } |
6451 | 0 | if (veryLarge || (scaledWidth >= w && scaledHeight >= h)) { |
6452 | 0 | scaledWidth = w; |
6453 | 0 | scaledHeight = h; |
6454 | 0 | } |
6455 | | |
6456 | | // compute mapping from device space to scaled image space |
6457 | 0 | SplashCoord mat1[6]; |
6458 | 0 | mat1[0] = mat[0] / scaledWidth; |
6459 | 0 | mat1[1] = mat[1] / scaledWidth; |
6460 | 0 | mat1[2] = mat[2] / scaledHeight; |
6461 | 0 | mat1[3] = mat[3] / scaledHeight; |
6462 | 0 | mat1[4] = mat[4]; |
6463 | 0 | mat1[5] = mat[5]; |
6464 | 0 | SplashCoord det = mat1[0] * mat1[3] - mat1[1] * mat1[2]; |
6465 | 0 | if (splashAbs(det) < 1e-6) { |
6466 | | // this should be caught by the singular matrix check in drawImage |
6467 | 0 | return splashErrSingularMatrix; |
6468 | 0 | } |
6469 | 0 | SplashCoord invMat[6]; |
6470 | 0 | invMat[0] = mat1[3] / det; |
6471 | 0 | invMat[1] = -mat1[1] / det; |
6472 | 0 | invMat[2] = -mat1[2] / det; |
6473 | 0 | invMat[3] = mat1[0] / det; |
6474 | | // the extra "+ 0.5 * (...)" terms are here because the |
6475 | | // drawImageArbitrary(No)Interp functions multiply by pixel |
6476 | | // centers, (x + 0.5, y + 0.5) |
6477 | 0 | invMat[4] = (mat1[2] * mat1[5] - mat1[3] * mat1[4]) / det |
6478 | 0 | + (invMat[0] + invMat[2]) * 0.5; |
6479 | 0 | invMat[5] = (mat1[1] * mat1[4] - mat1[0] * mat1[5]) / det |
6480 | 0 | + (invMat[1] + invMat[3]) * 0.5; |
6481 | |
|
6482 | 0 | Guchar *scaledColor, *scaledAlpha; |
6483 | 0 | GBool freeScaledImage; |
6484 | 0 | getScaledImage(imageTag, src, srcData, w, h, nComps, |
6485 | 0 | scaledWidth, scaledHeight, srcMode, srcAlpha, interpolate, |
6486 | 0 | &scaledColor, &scaledAlpha, &freeScaledImage); |
6487 | | |
6488 | | // draw it |
6489 | 0 | if (interpolate) { |
6490 | 0 | drawImageArbitraryInterp(scaledColor, scaledAlpha, |
6491 | 0 | &dd, drawRowFunc, invMat, |
6492 | 0 | scaledWidth, scaledHeight, |
6493 | 0 | xMin, yMin, xMax, yMax, |
6494 | 0 | nComps, srcAlpha); |
6495 | 0 | } else { |
6496 | 0 | drawImageArbitraryNoInterp(scaledColor, scaledAlpha, |
6497 | 0 | &dd, drawRowFunc, invMat, |
6498 | 0 | scaledWidth, scaledHeight, |
6499 | 0 | xMin, yMin, xMax, yMax, |
6500 | 0 | nComps, srcAlpha); |
6501 | 0 | } |
6502 | | |
6503 | | // free the downscaled/unscaled image |
6504 | 0 | if (freeScaledImage) { |
6505 | 0 | gfree(scaledColor); |
6506 | 0 | gfree(scaledAlpha); |
6507 | 0 | } |
6508 | 0 | } |
6509 | | |
6510 | 0 | return splashOk; |
6511 | 0 | } |
6512 | | |
6513 | | ImageScaler *Splash::getImageScaler(GString *imageTag, |
6514 | | SplashImageSource src, void *srcData, |
6515 | | int w, int h, int nComps, |
6516 | | int scaledWidth, int scaledHeight, |
6517 | | SplashColorMode srcMode, |
6518 | 0 | GBool srcAlpha, GBool interpolate) { |
6519 | | // Notes: |
6520 | | // |
6521 | | // * If the scaled image width or height is greater than 2000, we |
6522 | | // don't cache it. |
6523 | | // |
6524 | | // * Caching is done on the third consecutive use (second |
6525 | | // consecutive reuse) of an image; this avoids overhead on the |
6526 | | // common case of single-use images. |
6527 | |
|
6528 | 0 | if (scaledWidth < 2000 && scaledHeight < 2000 && |
6529 | 0 | imageCache->match(imageTag, scaledWidth, scaledHeight, |
6530 | 0 | srcMode, srcAlpha, interpolate)) { |
6531 | 0 | if (imageCache->colorData) { |
6532 | 0 | return new ReplayImageScaler(nComps, srcAlpha, scaledWidth, |
6533 | 0 | imageCache->colorData, |
6534 | 0 | imageCache->alphaData); |
6535 | 0 | } else { |
6536 | 0 | int lineSize; |
6537 | 0 | if (scaledWidth < INT_MAX / nComps) { |
6538 | 0 | lineSize = scaledWidth * nComps; |
6539 | 0 | } else { |
6540 | 0 | lineSize = -1; |
6541 | 0 | } |
6542 | 0 | imageCache->colorData = (Guchar *)gmallocn(scaledHeight, lineSize); |
6543 | 0 | if (srcAlpha) { |
6544 | 0 | imageCache->alphaData = (Guchar *)gmallocn(scaledHeight, scaledWidth); |
6545 | 0 | } |
6546 | 0 | return new SavingImageScaler(src, srcData, |
6547 | 0 | w, h, nComps, srcAlpha, |
6548 | 0 | scaledWidth, scaledHeight, |
6549 | 0 | interpolate, |
6550 | 0 | imageCache->colorData, |
6551 | 0 | imageCache->alphaData); |
6552 | 0 | } |
6553 | 0 | } else { |
6554 | 0 | imageCache->reset(imageTag, scaledWidth, scaledHeight, |
6555 | 0 | srcMode, srcAlpha, interpolate); |
6556 | 0 | return new BasicImageScaler(src, srcData, |
6557 | 0 | w, h, nComps, srcAlpha, |
6558 | 0 | scaledWidth, scaledHeight, |
6559 | 0 | interpolate); |
6560 | 0 | } |
6561 | 0 | } |
6562 | | |
6563 | | void Splash::getScaledImage(GString *imageTag, |
6564 | | SplashImageSource src, void *srcData, |
6565 | | int w, int h, int nComps, |
6566 | | int scaledWidth, int scaledHeight, |
6567 | | SplashColorMode srcMode, |
6568 | | GBool srcAlpha, GBool interpolate, |
6569 | | Guchar **scaledColor, Guchar **scaledAlpha, |
6570 | 0 | GBool *freeScaledImage) { |
6571 | | // Notes: |
6572 | | // |
6573 | | // * If the scaled image width or height is greater than 2000, we |
6574 | | // don't cache it. |
6575 | | // |
6576 | | // * This buffers the whole image anyway, so there's no reason to |
6577 | | // skip caching on the first reuse. |
6578 | |
|
6579 | 0 | if (scaledWidth >= 2000 || scaledHeight >= 2000) { |
6580 | 0 | int lineSize; |
6581 | 0 | if (scaledWidth < INT_MAX / nComps) { |
6582 | 0 | lineSize = scaledWidth * nComps; |
6583 | 0 | } else { |
6584 | 0 | lineSize = -1; |
6585 | 0 | } |
6586 | 0 | *scaledColor = (Guchar *)gmallocn(scaledHeight, lineSize); |
6587 | 0 | if (srcAlpha) { |
6588 | 0 | *scaledAlpha = (Guchar *)gmallocn(scaledHeight, scaledWidth); |
6589 | 0 | } else { |
6590 | 0 | *scaledAlpha = NULL; |
6591 | 0 | } |
6592 | 0 | *freeScaledImage = gTrue; |
6593 | 0 | if (scaledWidth == w && scaledHeight == h) { |
6594 | 0 | Guchar *colorPtr = *scaledColor; |
6595 | 0 | Guchar *alphaPtr = *scaledAlpha; |
6596 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6597 | 0 | (*src)(srcData, colorPtr, alphaPtr); |
6598 | 0 | colorPtr += scaledWidth * nComps; |
6599 | 0 | if (srcAlpha) { |
6600 | 0 | alphaPtr += scaledWidth; |
6601 | 0 | } |
6602 | 0 | } |
6603 | 0 | } else { |
6604 | 0 | BasicImageScaler scaler(src, srcData, w, h, nComps, srcAlpha, |
6605 | 0 | scaledWidth, scaledHeight, interpolate); |
6606 | 0 | Guchar *colorPtr = *scaledColor; |
6607 | 0 | Guchar *alphaPtr = *scaledAlpha; |
6608 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6609 | 0 | scaler.nextLine(); |
6610 | 0 | memcpy(colorPtr, scaler.colorData(), scaledWidth * nComps); |
6611 | 0 | colorPtr += scaledWidth * nComps; |
6612 | 0 | if (srcAlpha) { |
6613 | 0 | memcpy(alphaPtr, scaler.alphaData(), scaledWidth); |
6614 | 0 | alphaPtr += scaledWidth; |
6615 | 0 | } |
6616 | 0 | } |
6617 | 0 | } |
6618 | 0 | } else { |
6619 | 0 | if (!imageCache->match(imageTag, scaledWidth, scaledHeight, |
6620 | 0 | srcMode, srcAlpha, interpolate) || |
6621 | 0 | !imageCache->colorData) { |
6622 | 0 | imageCache->reset(imageTag, scaledWidth, scaledHeight, |
6623 | 0 | srcMode, srcAlpha, interpolate); |
6624 | 0 | int lineSize; |
6625 | 0 | if (scaledWidth < INT_MAX / nComps) { |
6626 | 0 | lineSize = scaledWidth * nComps; |
6627 | 0 | } else { |
6628 | 0 | lineSize = -1; |
6629 | 0 | } |
6630 | 0 | imageCache->colorData = (Guchar *)gmallocn(scaledHeight, lineSize); |
6631 | 0 | if (srcAlpha) { |
6632 | 0 | imageCache->alphaData = (Guchar *)gmallocn(scaledHeight, scaledWidth); |
6633 | 0 | } |
6634 | 0 | if (scaledWidth == w && scaledHeight == h) { |
6635 | 0 | Guchar *colorPtr = imageCache->colorData; |
6636 | 0 | Guchar *alphaPtr = imageCache->alphaData; |
6637 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6638 | 0 | (*src)(srcData, colorPtr, alphaPtr); |
6639 | 0 | colorPtr += scaledWidth * nComps; |
6640 | 0 | if (srcAlpha) { |
6641 | 0 | alphaPtr += scaledWidth; |
6642 | 0 | } |
6643 | 0 | } |
6644 | 0 | } else { |
6645 | 0 | SavingImageScaler scaler(src, srcData, w, h, nComps, srcAlpha, |
6646 | 0 | scaledWidth, scaledHeight, interpolate, |
6647 | 0 | imageCache->colorData, imageCache->alphaData); |
6648 | 0 | Guchar *colorPtr = imageCache->colorData; |
6649 | 0 | Guchar *alphaPtr = imageCache->alphaData; |
6650 | 0 | for (int y = 0; y < scaledHeight; ++y) { |
6651 | 0 | scaler.nextLine(); |
6652 | 0 | memcpy(colorPtr, scaler.colorData(), scaledWidth * nComps); |
6653 | 0 | colorPtr += scaledWidth * nComps; |
6654 | 0 | if (srcAlpha) { |
6655 | 0 | memcpy(alphaPtr, scaler.alphaData(), scaledWidth); |
6656 | 0 | alphaPtr += scaledWidth; |
6657 | 0 | } |
6658 | 0 | } |
6659 | 0 | } |
6660 | 0 | } |
6661 | 0 | *scaledColor = imageCache->colorData; |
6662 | 0 | *scaledAlpha = imageCache->alphaData; |
6663 | 0 | *freeScaledImage = gFalse; |
6664 | 0 | } |
6665 | 0 | } |
6666 | | |
6667 | | void Splash::drawImageArbitraryNoInterp(Guchar *scaledColor, |
6668 | | Guchar *scaledAlpha, |
6669 | | SplashDrawImageRowData *dd, |
6670 | | SplashDrawImageRowFunc drawRowFunc, |
6671 | | SplashCoord *invMat, |
6672 | | int scaledWidth, int scaledHeight, |
6673 | | int xMin, int yMin, int xMax, int yMax, |
6674 | 0 | int nComps, GBool srcAlpha) { |
6675 | 0 | int tt = state->clip->getXMinI(state->strokeAdjust); |
6676 | 0 | if (tt > xMin) { |
6677 | 0 | xMin = tt; |
6678 | 0 | } |
6679 | 0 | tt = state->clip->getXMaxI(state->strokeAdjust) + 1; |
6680 | 0 | if (tt < xMax) { |
6681 | 0 | xMax = tt; |
6682 | 0 | } |
6683 | 0 | tt = state->clip->getYMinI(state->strokeAdjust); |
6684 | 0 | if (tt > yMin) { |
6685 | 0 | yMin = tt; |
6686 | 0 | } |
6687 | 0 | tt = state->clip->getYMaxI(state->strokeAdjust) + 1; |
6688 | 0 | if (tt < yMax) { |
6689 | 0 | yMax = tt; |
6690 | 0 | } |
6691 | 0 | if (xMax <= xMin || yMax <= yMin) { |
6692 | 0 | return; |
6693 | 0 | } |
6694 | | |
6695 | 0 | Guchar *colorBuf = (Guchar *)gmallocn(xMax - xMin, nComps); |
6696 | 0 | Guchar *alphaBuf = NULL; |
6697 | 0 | if (srcAlpha) { |
6698 | 0 | alphaBuf = (Guchar *)gmalloc(xMax - xMin); |
6699 | 0 | } |
6700 | |
|
6701 | 0 | for (int y = yMin; y < yMax; ++y) { |
6702 | 0 | int rowMin = xMax; |
6703 | 0 | int rowMax = 0; |
6704 | 0 | for (int x = xMin; x < xMax; ++x) { |
6705 | | // note: invMat includes a "+0.5" factor so that this is really |
6706 | | // a multiply by (x+0.5, y+0.5) |
6707 | 0 | int xx = splashFloor((SplashCoord)x * invMat[0] |
6708 | 0 | + (SplashCoord)y * invMat[2] + invMat[4]); |
6709 | 0 | int yy = splashFloor((SplashCoord)x * invMat[1] |
6710 | 0 | + (SplashCoord)y * invMat[3] + invMat[5]); |
6711 | 0 | if (xx >= 0 && xx < scaledWidth && |
6712 | 0 | yy >= 0 && yy < scaledHeight) { |
6713 | 0 | Guchar *p = scaledColor + (yy * scaledWidth + xx) * nComps; |
6714 | 0 | Guchar *q = colorBuf + (x - xMin) * nComps; |
6715 | 0 | for (int i = 0; i < nComps; ++i) { |
6716 | 0 | *q++ = *p++; |
6717 | 0 | } |
6718 | 0 | if (srcAlpha) { |
6719 | 0 | alphaBuf[x - xMin] = scaledAlpha[yy * scaledWidth + xx]; |
6720 | 0 | } |
6721 | 0 | if (x < rowMin) { |
6722 | 0 | rowMin = x; |
6723 | 0 | } |
6724 | 0 | rowMax = x + 1; |
6725 | 0 | } |
6726 | 0 | } |
6727 | 0 | if (rowMin < rowMax) { |
6728 | 0 | (this->*drawRowFunc)(dd, |
6729 | 0 | colorBuf + (rowMin - xMin) * nComps, |
6730 | 0 | alphaBuf + (rowMin - xMin), |
6731 | 0 | rowMin, y, rowMax - rowMin); |
6732 | 0 | } |
6733 | 0 | } |
6734 | |
|
6735 | 0 | gfree(colorBuf); |
6736 | 0 | gfree(alphaBuf); |
6737 | 0 | } |
6738 | | |
6739 | | void Splash::drawImageArbitraryInterp(Guchar *scaledColor, Guchar *scaledAlpha, |
6740 | | SplashDrawImageRowData *dd, |
6741 | | SplashDrawImageRowFunc drawRowFunc, |
6742 | | SplashCoord *invMat, |
6743 | | int scaledWidth, int scaledHeight, |
6744 | | int xMin, int yMin, int xMax, int yMax, |
6745 | 0 | int nComps, GBool srcAlpha) { |
6746 | 0 | int tt = state->clip->getXMinI(state->strokeAdjust); |
6747 | 0 | if (tt > xMin) { |
6748 | 0 | xMin = tt; |
6749 | 0 | } |
6750 | 0 | tt = state->clip->getXMaxI(state->strokeAdjust) + 1; |
6751 | 0 | if (tt < xMax) { |
6752 | 0 | xMax = tt; |
6753 | 0 | } |
6754 | 0 | tt = state->clip->getYMinI(state->strokeAdjust); |
6755 | 0 | if (tt > yMin) { |
6756 | 0 | yMin = tt; |
6757 | 0 | } |
6758 | 0 | tt = state->clip->getYMaxI(state->strokeAdjust) + 1; |
6759 | 0 | if (tt < yMax) { |
6760 | 0 | yMax = tt; |
6761 | 0 | } |
6762 | 0 | if (xMax <= xMin || yMax <= yMin) { |
6763 | 0 | return; |
6764 | 0 | } |
6765 | | |
6766 | 0 | Guchar *colorBuf = (Guchar *)gmallocn(xMax - xMin, nComps); |
6767 | 0 | Guchar *alphaBuf = NULL; |
6768 | 0 | if (srcAlpha) { |
6769 | 0 | alphaBuf = (Guchar *)gmalloc(xMax - xMin); |
6770 | 0 | } |
6771 | |
|
6772 | 0 | for (int y = yMin; y < yMax; ++y) { |
6773 | 0 | int rowMin = xMax; |
6774 | 0 | int rowMax = 0; |
6775 | 0 | for (int x = xMin; x < xMax; ++x) { |
6776 | | // note: invMat includes a "+0.5" factor so that this is really |
6777 | | // a multiply by (x+0.5, y+0.5) |
6778 | 0 | SplashCoord xs = (SplashCoord)x * invMat[0] |
6779 | 0 | + (SplashCoord)y * invMat[2] + invMat[4]; |
6780 | 0 | SplashCoord ys = (SplashCoord)x * invMat[1] |
6781 | 0 | + (SplashCoord)y * invMat[3] + invMat[5]; |
6782 | 0 | int x0 = splashFloor(xs - 0.5); |
6783 | 0 | int x1 = x0 + 1; |
6784 | 0 | int y0 = splashFloor(ys - 0.5); |
6785 | 0 | int y1 = y0 + 1; |
6786 | 0 | if (x1 >= 0 && x0 < scaledWidth && y1 >= 0 && y0 < scaledHeight) { |
6787 | 0 | SplashCoord sx0 = (SplashCoord)x1 + 0.5 - xs; |
6788 | 0 | SplashCoord sx1 = (SplashCoord)1 - sx0; |
6789 | 0 | SplashCoord sy0 = (SplashCoord)y1 + 0.5 - ys; |
6790 | 0 | SplashCoord sy1 = (SplashCoord)1 - sy0; |
6791 | 0 | if (x0 < 0) { |
6792 | 0 | x0 = 0; |
6793 | 0 | } |
6794 | 0 | if (x1 >= scaledWidth) { |
6795 | 0 | x1 = scaledWidth - 1; |
6796 | 0 | } |
6797 | 0 | if (y0 < 0) { |
6798 | 0 | y0 = 0; |
6799 | 0 | } |
6800 | 0 | if (y1 >= scaledHeight) { |
6801 | 0 | y1 = scaledHeight - 1; |
6802 | 0 | } |
6803 | 0 | Guchar *p00 = scaledColor + (y0 * scaledWidth + x0) * nComps; |
6804 | 0 | Guchar *p10 = scaledColor + (y0 * scaledWidth + x1) * nComps; |
6805 | 0 | Guchar *p01 = scaledColor + (y1 * scaledWidth + x0) * nComps; |
6806 | 0 | Guchar *p11 = scaledColor + (y1 * scaledWidth + x1) * nComps; |
6807 | 0 | Guchar *q = colorBuf + (x - xMin) * nComps; |
6808 | 0 | for (int i = 0; i < nComps; ++i) { |
6809 | 0 | *q++ = (Guchar)(int)(sx0 * (sy0 * (int)*p00++ + sy1 * (int)*p01++) + |
6810 | 0 | sx1 * (sy0 * (int)*p10++ + sy1 * (int)*p11++)); |
6811 | 0 | } |
6812 | 0 | if (srcAlpha) { |
6813 | 0 | p00 = scaledAlpha + (y0 * scaledWidth + x0); |
6814 | 0 | p10 = scaledAlpha + (y0 * scaledWidth + x1); |
6815 | 0 | p01 = scaledAlpha + (y1 * scaledWidth + x0); |
6816 | 0 | p11 = scaledAlpha + (y1 * scaledWidth + x1); |
6817 | 0 | q = alphaBuf + (x - xMin); |
6818 | 0 | *q = (Guchar)(int)(sx0 * (sy0 * (int)*p00 + sy1 * (int)*p01) + |
6819 | 0 | sx1 * (sy0 * (int)*p10 + sy1 * (int)*p11)); |
6820 | 0 | } |
6821 | 0 | if (x < rowMin) { |
6822 | 0 | rowMin = x; |
6823 | 0 | } |
6824 | 0 | rowMax = x + 1; |
6825 | 0 | } |
6826 | 0 | } |
6827 | 0 | if (rowMin < rowMax) { |
6828 | 0 | (this->*drawRowFunc)(dd, |
6829 | 0 | colorBuf + (rowMin - xMin) * nComps, |
6830 | 0 | alphaBuf + (rowMin - xMin), |
6831 | 0 | rowMin, y, rowMax - rowMin); |
6832 | 0 | } |
6833 | 0 | } |
6834 | |
|
6835 | 0 | gfree(colorBuf); |
6836 | 0 | gfree(alphaBuf); |
6837 | 0 | } |
6838 | | |
6839 | | void Splash::mirrorImageRow(Guchar *colorIn, Guchar *alphaIn, |
6840 | | Guchar *colorOut, Guchar *alphaOut, |
6841 | 0 | int width, int nComps, GBool srcAlpha) { |
6842 | 0 | Guchar *p, *q; |
6843 | |
|
6844 | 0 | p = colorIn; |
6845 | 0 | q = colorOut + (width - 1) * nComps; |
6846 | 0 | for (int i = 0; i < width; ++i) { |
6847 | 0 | for (int j = 0; j < nComps; ++j) { |
6848 | 0 | q[j] = p[j]; |
6849 | 0 | } |
6850 | 0 | p += nComps; |
6851 | 0 | q -= nComps; |
6852 | 0 | } |
6853 | |
|
6854 | 0 | if (srcAlpha) { |
6855 | 0 | p = alphaIn; |
6856 | 0 | q = alphaOut + (width - 1); |
6857 | 0 | for (int i = 0; i < width; ++i) { |
6858 | 0 | *q = *p; |
6859 | 0 | ++p; |
6860 | 0 | --q; |
6861 | 0 | } |
6862 | 0 | } |
6863 | 0 | } |
6864 | | |
6865 | | void Splash::drawImageRowNoClipNoAlpha(SplashDrawImageRowData *data, |
6866 | | Guchar *colorData, Guchar *alphaData, |
6867 | 0 | int x, int y, int width) { |
6868 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, NULL, colorData); |
6869 | 0 | } |
6870 | | |
6871 | | void Splash::drawImageRowNoClipAlpha(SplashDrawImageRowData *data, |
6872 | | Guchar *colorData, Guchar *alphaData, |
6873 | 0 | int x, int y, int width) { |
6874 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6875 | 0 | alphaData, colorData); |
6876 | 0 | } |
6877 | | |
6878 | | void Splash::drawImageRowClipNoAlphaNoAA(SplashDrawImageRowData *data, |
6879 | | Guchar *colorData, |
6880 | | Guchar *alphaData, |
6881 | 0 | int x, int y, int width) { |
6882 | 0 | if (y < 0 || y >= bitmap->height) { |
6883 | 0 | return; |
6884 | 0 | } |
6885 | 0 | if (x < 0) { |
6886 | 0 | colorData -= x * data->nComps; |
6887 | 0 | width += x; |
6888 | 0 | x = 0; |
6889 | 0 | } |
6890 | 0 | if (x + width > bitmap->width) { |
6891 | 0 | width = bitmap->width - x; |
6892 | 0 | } |
6893 | 0 | if (width <= 0) { |
6894 | 0 | return; |
6895 | 0 | } |
6896 | 0 | memset(scanBuf + x, 0xff, width); |
6897 | 0 | state->clip->clipSpanBinary(scanBuf, y, x, x + width - 1, |
6898 | 0 | state->strokeAdjust); |
6899 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6900 | 0 | scanBuf + x, colorData); |
6901 | 0 | } |
6902 | | |
6903 | | void Splash::drawImageRowClipNoAlphaAA(SplashDrawImageRowData *data, |
6904 | | Guchar *colorData, |
6905 | | Guchar *alphaData, |
6906 | 0 | int x, int y, int width) { |
6907 | 0 | if (y < 0 || y >= bitmap->height) { |
6908 | 0 | return; |
6909 | 0 | } |
6910 | 0 | if (x < 0) { |
6911 | 0 | colorData -= x * data->nComps; |
6912 | 0 | width += x; |
6913 | 0 | x = 0; |
6914 | 0 | } |
6915 | 0 | if (x + width > bitmap->width) { |
6916 | 0 | width = bitmap->width - x; |
6917 | 0 | } |
6918 | 0 | if (width <= 0) { |
6919 | 0 | return; |
6920 | 0 | } |
6921 | 0 | memset(scanBuf + x, 0xff, width); |
6922 | 0 | state->clip->clipSpan(scanBuf, y, x, x + width - 1, state->strokeAdjust); |
6923 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6924 | 0 | scanBuf + x, colorData); |
6925 | 0 | } |
6926 | | |
6927 | | void Splash::drawImageRowClipAlphaNoAA(SplashDrawImageRowData *data, |
6928 | | Guchar *colorData, |
6929 | | Guchar *alphaData, |
6930 | 0 | int x, int y, int width) { |
6931 | 0 | if (y < 0 || y >= bitmap->height) { |
6932 | 0 | return; |
6933 | 0 | } |
6934 | 0 | if (x < 0) { |
6935 | 0 | colorData -= x * data->nComps; |
6936 | 0 | alphaData -= x; |
6937 | 0 | width += x; |
6938 | 0 | x = 0; |
6939 | 0 | } |
6940 | 0 | if (x + width > bitmap->width) { |
6941 | 0 | width = bitmap->width - x; |
6942 | 0 | } |
6943 | 0 | if (width <= 0) { |
6944 | 0 | return; |
6945 | 0 | } |
6946 | 0 | memcpy(scanBuf + x, alphaData, width); |
6947 | 0 | state->clip->clipSpanBinary(scanBuf, y, x, x + width - 1, |
6948 | 0 | state->strokeAdjust); |
6949 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6950 | 0 | scanBuf + x, colorData); |
6951 | 0 | } |
6952 | | |
6953 | | void Splash::drawImageRowClipAlphaAA(SplashDrawImageRowData *data, |
6954 | | Guchar *colorData, |
6955 | | Guchar *alphaData, |
6956 | 0 | int x, int y, int width) { |
6957 | 0 | if (y < 0 || y >= bitmap->height) { |
6958 | 0 | return; |
6959 | 0 | } |
6960 | 0 | if (x < 0) { |
6961 | 0 | colorData -= x * data->nComps; |
6962 | 0 | alphaData -= x; |
6963 | 0 | width += x; |
6964 | 0 | x = 0; |
6965 | 0 | } |
6966 | 0 | if (x + width > bitmap->width) { |
6967 | 0 | width = bitmap->width - x; |
6968 | 0 | } |
6969 | 0 | if (width <= 0) { |
6970 | 0 | return; |
6971 | 0 | } |
6972 | 0 | memcpy(scanBuf + x, alphaData, width); |
6973 | 0 | state->clip->clipSpan(scanBuf, y, x, x + width - 1, state->strokeAdjust); |
6974 | 0 | (this->*data->pipe.run)(&data->pipe, x, x + width - 1, y, |
6975 | 0 | scanBuf + x, colorData); |
6976 | 0 | } |
6977 | | |
6978 | | SplashError Splash::composite(SplashBitmap *src, int xSrc, int ySrc, |
6979 | | int xDest, int yDest, int w, int h, |
6980 | 0 | GBool noClip, GBool nonIsolated) { |
6981 | 0 | SplashPipe pipe; |
6982 | 0 | Guchar *mono1Ptr, *lineBuf, *linePtr; |
6983 | 0 | Guchar mono1Mask, b; |
6984 | 0 | int x0, x1, x, y0, y1, y, t; |
6985 | |
|
6986 | 0 | if (!(src->mode == bitmap->mode || |
6987 | 0 | (src->mode == splashModeMono8 && bitmap->mode == splashModeMono1) || |
6988 | 0 | (src->mode == splashModeRGB8 && bitmap->mode == splashModeBGR8))) { |
6989 | 0 | return splashErrModeMismatch; |
6990 | 0 | } |
6991 | | |
6992 | 0 | pipeInit(&pipe, NULL, |
6993 | 0 | (Guchar)splashRound(state->fillAlpha * 255), |
6994 | 0 | !noClip || src->alpha != NULL, nonIsolated); |
6995 | 0 | if (src->mode == splashModeMono1) { |
6996 | | // in mono1 mode, pipeRun expects the source to be in mono8 |
6997 | | // format, so we need to extract the source color values into |
6998 | | // scanBuf, expanding them from mono1 to mono8 |
6999 | 0 | if (noClip) { |
7000 | 0 | if (src->alpha) { |
7001 | 0 | for (y = 0; y < h; ++y) { |
7002 | 0 | mono1Ptr = src->data + (ySrc + y) * src->rowSize + (xSrc >> 3); |
7003 | 0 | mono1Mask = (Guchar)(0x80 >> (xSrc & 7)); |
7004 | 0 | for (x = 0; x < w; ++x) { |
7005 | 0 | scanBuf[x] = (*mono1Ptr & mono1Mask) ? 0xff : 0x00; |
7006 | 0 | mono1Ptr += mono1Mask & 1; |
7007 | 0 | mono1Mask = (Guchar)((mono1Mask << 7) | (mono1Mask >> 1)); |
7008 | 0 | } |
7009 | | // this uses shape instead of alpha, which isn't technically |
7010 | | // correct, but works out the same |
7011 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7012 | 0 | src->alpha + |
7013 | 0 | (ySrc + y) * src->alphaRowSize + xSrc, |
7014 | 0 | scanBuf); |
7015 | 0 | } |
7016 | 0 | } else { |
7017 | 0 | for (y = 0; y < h; ++y) { |
7018 | 0 | mono1Ptr = src->data + (ySrc + y) * src->rowSize + (xSrc >> 3); |
7019 | 0 | mono1Mask = (Guchar)(0x80 >> (xSrc & 7)); |
7020 | 0 | for (x = 0; x < w; ++x) { |
7021 | 0 | scanBuf[x] = (*mono1Ptr & mono1Mask) ? 0xff : 0x00; |
7022 | 0 | mono1Ptr += mono1Mask & 1; |
7023 | 0 | mono1Mask = (Guchar)((mono1Mask << 7) | (mono1Mask >> 1)); |
7024 | 0 | } |
7025 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7026 | 0 | NULL, |
7027 | 0 | scanBuf); |
7028 | 0 | } |
7029 | 0 | } |
7030 | 0 | } else { |
7031 | 0 | x0 = xDest; |
7032 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > x0) { |
7033 | 0 | x0 = t; |
7034 | 0 | } |
7035 | 0 | x1 = xDest + w; |
7036 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust) + 1) < x1) { |
7037 | 0 | x1 = t; |
7038 | 0 | } |
7039 | 0 | y0 = yDest; |
7040 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > y0) { |
7041 | 0 | y0 = t; |
7042 | 0 | } |
7043 | 0 | y1 = yDest + h; |
7044 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust) + 1) < y1) { |
7045 | 0 | y1 = t; |
7046 | 0 | } |
7047 | 0 | if (x0 < x1 && y0 < y1) { |
7048 | 0 | if (src->alpha) { |
7049 | 0 | for (y = y0; y < y1; ++y) { |
7050 | 0 | mono1Ptr = src->data |
7051 | 0 | + (ySrc + y - yDest) * src->rowSize |
7052 | 0 | + ((xSrc + x0 - xDest) >> 3); |
7053 | 0 | mono1Mask = (Guchar)(0x80 >> ((xSrc + x0 - xDest) & 7)); |
7054 | 0 | for (x = x0; x < x1; ++x) { |
7055 | 0 | scanBuf[x] = (*mono1Ptr & mono1Mask) ? 0xff : 0x00; |
7056 | 0 | mono1Ptr += mono1Mask & 1; |
7057 | 0 | mono1Mask = (Guchar)((mono1Mask << 7) | (mono1Mask >> 1)); |
7058 | 0 | } |
7059 | 0 | memcpy(scanBuf2 + x0, |
7060 | 0 | src->alpha + (ySrc + y - yDest) * src->alphaRowSize + |
7061 | 0 | (xSrc + x0 - xDest), |
7062 | 0 | x1 - x0); |
7063 | 0 | if (!state->clip->clipSpanBinary(scanBuf2, y, x0, x1 - 1, |
7064 | 0 | state->strokeAdjust)) { |
7065 | 0 | continue; |
7066 | 0 | } |
7067 | | // this uses shape instead of alpha, which isn't technically |
7068 | | // correct, but works out the same |
7069 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, y, |
7070 | 0 | scanBuf2 + x0, |
7071 | 0 | scanBuf + x0); |
7072 | 0 | } |
7073 | 0 | } else { |
7074 | 0 | for (y = y0; y < y1; ++y) { |
7075 | 0 | mono1Ptr = src->data |
7076 | 0 | + (ySrc + y - yDest) * src->rowSize |
7077 | 0 | + ((xSrc + x0 - xDest) >> 3); |
7078 | 0 | mono1Mask = (Guchar)(0x80 >> ((xSrc + x0 - xDest) & 7)); |
7079 | 0 | for (x = x0; x < x1; ++x) { |
7080 | 0 | scanBuf[x] = (*mono1Ptr & mono1Mask) ? 0xff : 0x00; |
7081 | 0 | mono1Ptr += mono1Mask & 1; |
7082 | 0 | mono1Mask = (Guchar)((mono1Mask << 7) | (mono1Mask >> 1)); |
7083 | 0 | } |
7084 | 0 | memset(scanBuf2 + x0, 0xff, x1 - x0); |
7085 | 0 | if (!state->clip->clipSpanBinary(scanBuf2, y, x0, x1 - 1, |
7086 | 0 | state->strokeAdjust)) { |
7087 | 0 | continue; |
7088 | 0 | } |
7089 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, y, |
7090 | 0 | scanBuf2 + x0, |
7091 | 0 | scanBuf + x0); |
7092 | 0 | } |
7093 | 0 | } |
7094 | 0 | } |
7095 | 0 | } |
7096 | |
|
7097 | 0 | } else if (src->mode == splashModeBGR8) { |
7098 | | // in BGR8 mode, pipeRun expects the source to be in RGB8 format, |
7099 | | // so we need to swap bytes |
7100 | 0 | lineBuf = (Guchar *)gmallocn(w, 3); |
7101 | 0 | if (noClip) { |
7102 | 0 | if (src->alpha) { |
7103 | 0 | for (y = 0; y < h; ++y) { |
7104 | 0 | memcpy(lineBuf, |
7105 | 0 | src->data + (ySrc + y) * src->rowSize + xSrc * 3, |
7106 | 0 | w * 3); |
7107 | 0 | for (x = 0, linePtr = lineBuf; x < w; ++x, linePtr += 3) { |
7108 | 0 | b = linePtr[0]; |
7109 | 0 | linePtr[0] = linePtr[2]; |
7110 | 0 | linePtr[2] = b; |
7111 | 0 | } |
7112 | | // this uses shape instead of alpha, which isn't technically |
7113 | | // correct, but works out the same |
7114 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7115 | 0 | src->alpha + |
7116 | 0 | (ySrc + y) * src->alphaRowSize + xSrc, |
7117 | 0 | lineBuf); |
7118 | 0 | } |
7119 | 0 | } else { |
7120 | 0 | for (y = 0; y < h; ++y) { |
7121 | 0 | memcpy(lineBuf, |
7122 | 0 | src->data + (ySrc + y) * src->rowSize + xSrc * 3, |
7123 | 0 | w * 3); |
7124 | 0 | for (x = 0, linePtr = lineBuf; x < w; ++x, linePtr += 3) { |
7125 | 0 | b = linePtr[0]; |
7126 | 0 | linePtr[0] = linePtr[2]; |
7127 | 0 | linePtr[2] = b; |
7128 | 0 | } |
7129 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7130 | 0 | NULL, lineBuf); |
7131 | 0 | } |
7132 | 0 | } |
7133 | 0 | } else { |
7134 | 0 | x0 = xDest; |
7135 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > x0) { |
7136 | 0 | x0 = t; |
7137 | 0 | } |
7138 | 0 | x1 = xDest + w; |
7139 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust) + 1) < x1) { |
7140 | 0 | x1 = t; |
7141 | 0 | } |
7142 | 0 | y0 = yDest; |
7143 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > y0) { |
7144 | 0 | y0 = t; |
7145 | 0 | } |
7146 | 0 | y1 = yDest + h; |
7147 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust) + 1) < y1) { |
7148 | 0 | y1 = t; |
7149 | 0 | } |
7150 | 0 | if (x0 < x1 && y0 < y1) { |
7151 | 0 | if (src->alpha) { |
7152 | 0 | for (y = y0; y < y1; ++y) { |
7153 | 0 | memcpy(scanBuf + x0, |
7154 | 0 | src->alpha + (ySrc + y - yDest) * src->alphaRowSize + |
7155 | 0 | (xSrc + x0 - xDest), |
7156 | 0 | x1 - x0); |
7157 | 0 | state->clip->clipSpan(scanBuf, y, x0, x1 - 1, state->strokeAdjust); |
7158 | 0 | memcpy(lineBuf, |
7159 | 0 | src->data + |
7160 | 0 | (ySrc + y - yDest) * src->rowSize + |
7161 | 0 | (xSrc + x0 - xDest) * 3, |
7162 | 0 | (x1 - x0) * 3); |
7163 | 0 | for (x = 0, linePtr = lineBuf; x < x1 - x0; ++x, linePtr += 3) { |
7164 | 0 | b = linePtr[0]; |
7165 | 0 | linePtr[0] = linePtr[2]; |
7166 | 0 | linePtr[2] = b; |
7167 | 0 | } |
7168 | | // this uses shape instead of alpha, which isn't technically |
7169 | | // correct, but works out the same |
7170 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, y, |
7171 | 0 | scanBuf + x0, lineBuf); |
7172 | 0 | } |
7173 | 0 | } else { |
7174 | 0 | for (y = y0; y < y1; ++y) { |
7175 | 0 | memset(scanBuf + x0, 0xff, x1 - x0); |
7176 | 0 | state->clip->clipSpan(scanBuf, y, x0, x1 - 1, state->strokeAdjust); |
7177 | 0 | memcpy(lineBuf, |
7178 | 0 | src->data + |
7179 | 0 | (ySrc + y - yDest) * src->rowSize + |
7180 | 0 | (xSrc + x0 - xDest) * 3, |
7181 | 0 | (x1 - x0) * 3); |
7182 | 0 | for (x = 0, linePtr = lineBuf; x < x1 - x0; ++x, linePtr += 3) { |
7183 | 0 | b = linePtr[0]; |
7184 | 0 | linePtr[0] = linePtr[2]; |
7185 | 0 | linePtr[2] = b; |
7186 | 0 | } |
7187 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, yDest + y, |
7188 | 0 | scanBuf + x0, |
7189 | 0 | src->data + |
7190 | 0 | (ySrc + y - yDest) * src->rowSize + |
7191 | 0 | (xSrc + x0 - xDest) * bitmapComps); |
7192 | 0 | } |
7193 | 0 | } |
7194 | 0 | } |
7195 | 0 | } |
7196 | 0 | gfree(lineBuf); |
7197 | |
|
7198 | 0 | } else { // src->mode not mono1 or BGR8 |
7199 | 0 | if (noClip) { |
7200 | 0 | if (src->alpha) { |
7201 | 0 | for (y = 0; y < h; ++y) { |
7202 | | // this uses shape instead of alpha, which isn't technically |
7203 | | // correct, but works out the same |
7204 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7205 | 0 | src->alpha + |
7206 | 0 | (ySrc + y) * src->alphaRowSize + xSrc, |
7207 | 0 | src->data + (ySrc + y) * src->rowSize + |
7208 | 0 | xSrc * bitmapComps); |
7209 | 0 | } |
7210 | 0 | } else { |
7211 | 0 | for (y = 0; y < h; ++y) { |
7212 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7213 | 0 | NULL, |
7214 | 0 | src->data + (ySrc + y) * src->rowSize + |
7215 | 0 | xSrc * bitmapComps); |
7216 | 0 | } |
7217 | 0 | } |
7218 | 0 | } else { |
7219 | 0 | x0 = xDest; |
7220 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > x0) { |
7221 | 0 | x0 = t; |
7222 | 0 | } |
7223 | 0 | x1 = xDest + w; |
7224 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust) + 1) < x1) { |
7225 | 0 | x1 = t; |
7226 | 0 | } |
7227 | 0 | y0 = yDest; |
7228 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > y0) { |
7229 | 0 | y0 = t; |
7230 | 0 | } |
7231 | 0 | y1 = yDest + h; |
7232 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust) + 1) < y1) { |
7233 | 0 | y1 = t; |
7234 | 0 | } |
7235 | 0 | if (x0 < x1 && y0 < y1) { |
7236 | 0 | if (src->alpha) { |
7237 | 0 | for (y = y0; y < y1; ++y) { |
7238 | 0 | memcpy(scanBuf + x0, |
7239 | 0 | src->alpha + (ySrc + y - yDest) * src->alphaRowSize + |
7240 | 0 | (xSrc + x0 - xDest), |
7241 | 0 | x1 - x0); |
7242 | 0 | state->clip->clipSpan(scanBuf, y, x0, x1 - 1, state->strokeAdjust); |
7243 | | // this uses shape instead of alpha, which isn't technically |
7244 | | // correct, but works out the same |
7245 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, y, |
7246 | 0 | scanBuf + x0, |
7247 | 0 | src->data + |
7248 | 0 | (ySrc + y - yDest) * src->rowSize + |
7249 | 0 | (xSrc + x0 - xDest) * bitmapComps); |
7250 | 0 | } |
7251 | 0 | } else { |
7252 | 0 | for (y = y0; y < y1; ++y) { |
7253 | 0 | memset(scanBuf + x0, 0xff, x1 - x0); |
7254 | 0 | state->clip->clipSpan(scanBuf, y, x0, x1 - 1, state->strokeAdjust); |
7255 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, yDest + y, |
7256 | 0 | scanBuf + x0, |
7257 | 0 | src->data + |
7258 | 0 | (ySrc + y - yDest) * src->rowSize + |
7259 | 0 | (xSrc + x0 - xDest) * bitmapComps); |
7260 | 0 | } |
7261 | 0 | } |
7262 | 0 | } |
7263 | 0 | } |
7264 | 0 | } |
7265 | |
|
7266 | 0 | return splashOk; |
7267 | 0 | } |
7268 | | |
7269 | | SplashError Splash::compositeWithOverprint(SplashBitmap *src, |
7270 | | Guint *srcOverprintMaskBitmap, |
7271 | | int xSrc, int ySrc, |
7272 | | int xDest, int yDest, int w, int h, |
7273 | 0 | GBool noClip, GBool nonIsolated) { |
7274 | 0 | SplashPipe pipe; |
7275 | 0 | int x0, x1, y0, y1, y, t; |
7276 | |
|
7277 | 0 | if (!(src->mode == bitmap->mode || |
7278 | 0 | (src->mode == splashModeMono8 && bitmap->mode == splashModeMono1) || |
7279 | 0 | (src->mode == splashModeRGB8 && bitmap->mode == splashModeBGR8))) { |
7280 | 0 | return splashErrModeMismatch; |
7281 | 0 | } |
7282 | | |
7283 | 0 | pipeInit(&pipe, NULL, |
7284 | 0 | (Guchar)splashRound(state->fillAlpha * 255), |
7285 | 0 | !noClip || src->alpha != NULL, nonIsolated, gTrue); |
7286 | |
|
7287 | 0 | if (noClip) { |
7288 | 0 | if (src->alpha) { |
7289 | 0 | for (y = 0; y < h; ++y) { |
7290 | 0 | pipe.srcOverprintMaskPtr = srcOverprintMaskBitmap + y * w + xSrc; |
7291 | | // this uses shape instead of alpha, which isn't technically |
7292 | | // correct, but works out the same |
7293 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7294 | 0 | src->alpha + |
7295 | 0 | (ySrc + y) * src->alphaRowSize + xSrc, |
7296 | 0 | src->data + (ySrc + y) * src->rowSize + |
7297 | 0 | xSrc * bitmapComps); |
7298 | 0 | } |
7299 | 0 | } else { |
7300 | 0 | for (y = 0; y < h; ++y) { |
7301 | 0 | pipe.srcOverprintMaskPtr = srcOverprintMaskBitmap + y * w + xSrc; |
7302 | 0 | (this->*pipe.run)(&pipe, xDest, xDest + w - 1, yDest + y, |
7303 | 0 | NULL, |
7304 | 0 | src->data + (ySrc + y) * src->rowSize + |
7305 | 0 | xSrc * bitmapComps); |
7306 | 0 | } |
7307 | 0 | } |
7308 | 0 | } else { |
7309 | 0 | x0 = xDest; |
7310 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > x0) { |
7311 | 0 | x0 = t; |
7312 | 0 | } |
7313 | 0 | x1 = xDest + w; |
7314 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust) + 1) < x1) { |
7315 | 0 | x1 = t; |
7316 | 0 | } |
7317 | 0 | y0 = yDest; |
7318 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > y0) { |
7319 | 0 | y0 = t; |
7320 | 0 | } |
7321 | 0 | y1 = yDest + h; |
7322 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust) + 1) < y1) { |
7323 | 0 | y1 = t; |
7324 | 0 | } |
7325 | 0 | if (x0 < x1 && y0 < y1) { |
7326 | 0 | if (src->alpha) { |
7327 | 0 | for (y = y0; y < y1; ++y) { |
7328 | 0 | memcpy(scanBuf + x0, |
7329 | 0 | src->alpha + (ySrc + y - yDest) * src->alphaRowSize + |
7330 | 0 | (xSrc + x0 - xDest), |
7331 | 0 | x1 - x0); |
7332 | 0 | state->clip->clipSpan(scanBuf, y, x0, x1 - 1, state->strokeAdjust); |
7333 | 0 | pipe.srcOverprintMaskPtr = srcOverprintMaskBitmap |
7334 | 0 | + (ySrc + y - yDest) * w |
7335 | 0 | + (xSrc + x0 - xDest); |
7336 | | // this uses shape instead of alpha, which isn't technically |
7337 | | // correct, but works out the same |
7338 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, y, |
7339 | 0 | scanBuf + x0, |
7340 | 0 | src->data + |
7341 | 0 | (ySrc + y - yDest) * src->rowSize + |
7342 | 0 | (xSrc + x0 - xDest) * bitmapComps); |
7343 | 0 | } |
7344 | 0 | } else { |
7345 | 0 | for (y = y0; y < y1; ++y) { |
7346 | 0 | memset(scanBuf + x0, 0xff, x1 - x0); |
7347 | 0 | state->clip->clipSpan(scanBuf, y, x0, x1 - 1, state->strokeAdjust); |
7348 | 0 | pipe.srcOverprintMaskPtr = srcOverprintMaskBitmap |
7349 | 0 | + (ySrc + y - yDest) * w |
7350 | 0 | + (xSrc + x0 - xDest); |
7351 | 0 | (this->*pipe.run)(&pipe, x0, x1 - 1, y, |
7352 | 0 | scanBuf + x0, |
7353 | 0 | src->data + |
7354 | 0 | (ySrc + y - yDest) * src->rowSize + |
7355 | 0 | (xSrc + x0 - xDest) * bitmapComps); |
7356 | 0 | } |
7357 | 0 | } |
7358 | 0 | } |
7359 | 0 | } |
7360 | |
|
7361 | 0 | return splashOk; |
7362 | 0 | } |
7363 | | |
7364 | 0 | void Splash::compositeBackground(SplashColorPtr color) { |
7365 | 0 | SplashColorPtr p; |
7366 | 0 | Guchar *q; |
7367 | 0 | Guchar alpha, alpha1, c, color0, color1, color2, mask; |
7368 | 0 | #if SPLASH_CMYK |
7369 | 0 | Guchar color3; |
7370 | 0 | #endif |
7371 | 0 | int x, y; |
7372 | |
|
7373 | 0 | switch (bitmap->mode) { |
7374 | 0 | case splashModeMono1: |
7375 | 0 | color0 = color[0]; |
7376 | 0 | for (y = 0; y < bitmap->height; ++y) { |
7377 | 0 | p = &bitmap->data[y * bitmap->rowSize]; |
7378 | 0 | q = &bitmap->alpha[y * bitmap->alphaRowSize]; |
7379 | 0 | mask = 0x80; |
7380 | 0 | for (x = 0; x < bitmap->width; ++x) { |
7381 | 0 | alpha = *q++; |
7382 | 0 | if (alpha == 0) { |
7383 | 0 | if (color0 & 0x80) { |
7384 | 0 | *p |= mask; |
7385 | 0 | } else { |
7386 | 0 | *p &= (Guchar)~mask; |
7387 | 0 | } |
7388 | 0 | } else if (alpha != 255) { |
7389 | 0 | alpha1 = (Guchar)(255 - alpha); |
7390 | 0 | c = (*p & mask) ? 0xff : 0x00; |
7391 | 0 | c = div255(alpha1 * color0 + alpha * c); |
7392 | 0 | if (c & 0x80) { |
7393 | 0 | *p |= mask; |
7394 | 0 | } else { |
7395 | 0 | *p &= (Guchar)~mask; |
7396 | 0 | } |
7397 | 0 | } |
7398 | 0 | if (!(mask = (Guchar)(mask >> 1))) { |
7399 | 0 | mask = 0x80; |
7400 | 0 | ++p; |
7401 | 0 | } |
7402 | 0 | } |
7403 | 0 | } |
7404 | 0 | break; |
7405 | 0 | case splashModeMono8: |
7406 | 0 | color0 = color[0]; |
7407 | 0 | for (y = 0; y < bitmap->height; ++y) { |
7408 | 0 | p = &bitmap->data[y * bitmap->rowSize]; |
7409 | 0 | q = &bitmap->alpha[y * bitmap->alphaRowSize]; |
7410 | 0 | for (x = 0; x < bitmap->width; ++x) { |
7411 | 0 | alpha = *q++; |
7412 | 0 | if (alpha == 0) { |
7413 | 0 | p[0] = color0; |
7414 | 0 | } else if (alpha != 255) { |
7415 | 0 | alpha1 = (Guchar)(255 - alpha); |
7416 | 0 | p[0] = div255(alpha1 * color0 + alpha * p[0]); |
7417 | 0 | } |
7418 | 0 | ++p; |
7419 | 0 | } |
7420 | 0 | } |
7421 | 0 | break; |
7422 | 0 | case splashModeRGB8: |
7423 | 0 | case splashModeBGR8: |
7424 | 0 | color0 = color[0]; |
7425 | 0 | color1 = color[1]; |
7426 | 0 | color2 = color[2]; |
7427 | 0 | for (y = 0; y < bitmap->height; ++y) { |
7428 | 0 | p = &bitmap->data[y * bitmap->rowSize]; |
7429 | 0 | q = &bitmap->alpha[y * bitmap->alphaRowSize]; |
7430 | 0 | for (x = 0; x < bitmap->width; ++x) { |
7431 | 0 | alpha = *q++; |
7432 | 0 | if (alpha == 0) { |
7433 | 0 | p[0] = color0; |
7434 | 0 | p[1] = color1; |
7435 | 0 | p[2] = color2; |
7436 | 0 | } else if (alpha != 255) { |
7437 | 0 | alpha1 = (Guchar)(255 - alpha); |
7438 | 0 | p[0] = div255(alpha1 * color0 + alpha * p[0]); |
7439 | 0 | p[1] = div255(alpha1 * color1 + alpha * p[1]); |
7440 | 0 | p[2] = div255(alpha1 * color2 + alpha * p[2]); |
7441 | 0 | } |
7442 | 0 | p += 3; |
7443 | 0 | } |
7444 | 0 | } |
7445 | 0 | break; |
7446 | 0 | #if SPLASH_CMYK |
7447 | 0 | case splashModeCMYK8: |
7448 | 0 | color0 = color[0]; |
7449 | 0 | color1 = color[1]; |
7450 | 0 | color2 = color[2]; |
7451 | 0 | color3 = color[3]; |
7452 | 0 | for (y = 0; y < bitmap->height; ++y) { |
7453 | 0 | p = &bitmap->data[y * bitmap->rowSize]; |
7454 | 0 | q = &bitmap->alpha[y * bitmap->alphaRowSize]; |
7455 | 0 | for (x = 0; x < bitmap->width; ++x) { |
7456 | 0 | alpha = *q++; |
7457 | 0 | if (alpha == 0) { |
7458 | 0 | p[0] = color0; |
7459 | 0 | p[1] = color1; |
7460 | 0 | p[2] = color2; |
7461 | 0 | p[3] = color3; |
7462 | 0 | } else if (alpha != 255) { |
7463 | 0 | alpha1 = (Guchar)(255 - alpha); |
7464 | 0 | p[0] = div255(alpha1 * color0 + alpha * p[0]); |
7465 | 0 | p[1] = div255(alpha1 * color1 + alpha * p[1]); |
7466 | 0 | p[2] = div255(alpha1 * color2 + alpha * p[2]); |
7467 | 0 | p[3] = div255(alpha1 * color3 + alpha * p[3]); |
7468 | 0 | } |
7469 | 0 | p += 4; |
7470 | 0 | } |
7471 | 0 | } |
7472 | 0 | break; |
7473 | 0 | #endif |
7474 | 0 | } |
7475 | 0 | memset(bitmap->alpha, 255, bitmap->alphaRowSize * bitmap->height); |
7476 | 0 | } |
7477 | | |
7478 | | SplashError Splash::blitTransparent(SplashBitmap *src, int xSrc, int ySrc, |
7479 | 0 | int xDest, int yDest, int w, int h) { |
7480 | 0 | SplashColorPtr p, q; |
7481 | 0 | Guchar mask, srcMask; |
7482 | 0 | int x, y; |
7483 | |
|
7484 | 0 | if (src->mode != bitmap->mode) { |
7485 | 0 | return splashErrModeMismatch; |
7486 | 0 | } |
7487 | | |
7488 | 0 | switch (bitmap->mode) { |
7489 | 0 | case splashModeMono1: |
7490 | 0 | for (y = 0; y < h; ++y) { |
7491 | 0 | p = &bitmap->data[(yDest + y) * bitmap->rowSize + (xDest >> 3)]; |
7492 | 0 | mask = (Guchar)(0x80 >> (xDest & 7)); |
7493 | 0 | q = &src->data[(ySrc + y) * src->rowSize + (xSrc >> 3)]; |
7494 | 0 | srcMask = (Guchar)(0x80 >> (xSrc & 7)); |
7495 | 0 | for (x = 0; x < w; ++x) { |
7496 | 0 | if (*q & srcMask) { |
7497 | 0 | *p |= mask; |
7498 | 0 | } else { |
7499 | 0 | *p &= (Guchar)~mask; |
7500 | 0 | } |
7501 | 0 | if (!(mask = (Guchar)(mask >> 1))) { |
7502 | 0 | mask = 0x80; |
7503 | 0 | ++p; |
7504 | 0 | } |
7505 | 0 | if (!(srcMask = (Guchar)(srcMask >> 1))) { |
7506 | 0 | srcMask = 0x80; |
7507 | 0 | ++q; |
7508 | 0 | } |
7509 | 0 | } |
7510 | 0 | } |
7511 | 0 | break; |
7512 | 0 | case splashModeMono8: |
7513 | 0 | for (y = 0; y < h; ++y) { |
7514 | 0 | p = &bitmap->data[(yDest + y) * bitmap->rowSize + xDest]; |
7515 | 0 | q = &src->data[(ySrc + y) * src->rowSize + xSrc]; |
7516 | 0 | memcpy(p, q, w); |
7517 | 0 | } |
7518 | 0 | break; |
7519 | 0 | case splashModeRGB8: |
7520 | 0 | case splashModeBGR8: |
7521 | 0 | for (y = 0; y < h; ++y) { |
7522 | 0 | p = &bitmap->data[(yDest + y) * bitmap->rowSize + 3 * xDest]; |
7523 | 0 | q = &src->data[(ySrc + y) * src->rowSize + 3 * xSrc]; |
7524 | 0 | memcpy(p, q, 3 * w); |
7525 | 0 | } |
7526 | 0 | break; |
7527 | 0 | #if SPLASH_CMYK |
7528 | 0 | case splashModeCMYK8: |
7529 | 0 | for (y = 0; y < h; ++y) { |
7530 | 0 | p = &bitmap->data[(yDest + y) * bitmap->rowSize + 4 * xDest]; |
7531 | 0 | q = &src->data[(ySrc + y) * src->rowSize + 4 * xSrc]; |
7532 | 0 | memcpy(p, q, 4 * w); |
7533 | 0 | } |
7534 | 0 | break; |
7535 | 0 | #endif |
7536 | 0 | } |
7537 | | |
7538 | 0 | if (bitmap->alpha) { |
7539 | 0 | for (y = 0; y < h; ++y) { |
7540 | 0 | q = &bitmap->alpha[(yDest + y) * bitmap->alphaRowSize + xDest]; |
7541 | 0 | memset(q, 0, w); |
7542 | 0 | } |
7543 | 0 | } |
7544 | |
|
7545 | 0 | return splashOk; |
7546 | 0 | } |
7547 | | |
7548 | | SplashError Splash::blitCorrectedAlpha(SplashBitmap *dest, int xSrc, int ySrc, |
7549 | 0 | int xDest, int yDest, int w, int h) { |
7550 | 0 | SplashColorPtr p, q; |
7551 | 0 | Guchar *alpha0Ptr; |
7552 | 0 | Guchar alpha0, aSrc, mask, srcMask; |
7553 | 0 | int x, y; |
7554 | |
|
7555 | 0 | if (bitmap->mode != dest->mode || |
7556 | 0 | !bitmap->alpha || |
7557 | 0 | !dest->alpha || |
7558 | 0 | !groupBackBitmap) { |
7559 | 0 | return splashErrModeMismatch; |
7560 | 0 | } |
7561 | | |
7562 | 0 | switch (bitmap->mode) { |
7563 | 0 | case splashModeMono1: |
7564 | 0 | for (y = 0; y < h; ++y) { |
7565 | 0 | p = &dest->data[(yDest + y) * dest->rowSize + (xDest >> 3)]; |
7566 | 0 | mask = (Guchar)(0x80 >> (xDest & 7)); |
7567 | 0 | q = &bitmap->data[(ySrc + y) * bitmap->rowSize + (xSrc >> 3)]; |
7568 | 0 | srcMask = (Guchar)(0x80 >> (xSrc & 7)); |
7569 | 0 | for (x = 0; x < w; ++x) { |
7570 | 0 | if (*q & srcMask) { |
7571 | 0 | *p |= mask; |
7572 | 0 | } else { |
7573 | 0 | *p &= (Guchar)~mask; |
7574 | 0 | } |
7575 | 0 | if (!(mask = (Guchar)(mask >> 1))) { |
7576 | 0 | mask = 0x80; |
7577 | 0 | ++p; |
7578 | 0 | } |
7579 | 0 | if (!(srcMask = (Guchar)(srcMask >> 1))) { |
7580 | 0 | srcMask = 0x80; |
7581 | 0 | ++q; |
7582 | 0 | } |
7583 | 0 | } |
7584 | 0 | } |
7585 | 0 | break; |
7586 | 0 | case splashModeMono8: |
7587 | 0 | for (y = 0; y < h; ++y) { |
7588 | 0 | p = &dest->data[(yDest + y) * dest->rowSize + xDest]; |
7589 | 0 | q = &bitmap->data[(ySrc + y) * bitmap->rowSize + xSrc]; |
7590 | 0 | memcpy(p, q, w); |
7591 | 0 | } |
7592 | 0 | break; |
7593 | 0 | case splashModeRGB8: |
7594 | 0 | case splashModeBGR8: |
7595 | 0 | for (y = 0; y < h; ++y) { |
7596 | 0 | p = &dest->data[(yDest + y) * dest->rowSize + 3 * xDest]; |
7597 | 0 | q = &bitmap->data[(ySrc + y) * bitmap->rowSize + 3 * xSrc]; |
7598 | 0 | memcpy(p, q, 3 * w); |
7599 | 0 | } |
7600 | 0 | break; |
7601 | 0 | #if SPLASH_CMYK |
7602 | 0 | case splashModeCMYK8: |
7603 | 0 | for (y = 0; y < h; ++y) { |
7604 | 0 | p = &dest->data[(yDest + y) * dest->rowSize + 4 * xDest]; |
7605 | 0 | q = &bitmap->data[(ySrc + y) * bitmap->rowSize + 4 * xSrc]; |
7606 | 0 | memcpy(p, q, 4 * w); |
7607 | 0 | } |
7608 | 0 | break; |
7609 | 0 | #endif |
7610 | 0 | } |
7611 | | |
7612 | 0 | for (y = 0; y < h; ++y) { |
7613 | 0 | p = &dest->alpha[(yDest + y) * dest->alphaRowSize + xDest]; |
7614 | 0 | q = &bitmap->alpha[(ySrc + y) * bitmap->alphaRowSize + xSrc]; |
7615 | 0 | alpha0Ptr = &groupBackBitmap->alpha[(groupBackY + ySrc + y) |
7616 | 0 | * groupBackBitmap->alphaRowSize + |
7617 | 0 | (groupBackX + xSrc)]; |
7618 | 0 | for (x = 0; x < w; ++x) { |
7619 | 0 | alpha0 = *alpha0Ptr++; |
7620 | 0 | aSrc = *q++; |
7621 | 0 | *p++ = (Guchar)(alpha0 + aSrc - div255(alpha0 * aSrc)); |
7622 | 0 | } |
7623 | 0 | } |
7624 | |
|
7625 | 0 | return splashOk; |
7626 | 0 | } |
7627 | | |
7628 | | SplashPath *Splash::makeStrokePath(SplashPath *path, SplashCoord w, |
7629 | | int lineCap, int lineJoin, |
7630 | 0 | GBool flatten) { |
7631 | 0 | SplashPath *pathIn, *dashPath, *pathOut; |
7632 | 0 | SplashCoord d, dx, dy, wdx, wdy, dxNext, dyNext, wdxNext, wdyNext; |
7633 | 0 | SplashCoord crossprod, dotprod, miter, m; |
7634 | 0 | SplashCoord angle, angleNext, dAngle, xc, yc; |
7635 | 0 | SplashCoord dxJoin, dyJoin, dJoin, kappa; |
7636 | 0 | SplashCoord cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; |
7637 | 0 | GBool first, last, closed; |
7638 | 0 | int subpathStart0, subpathStart1, seg, i0, i1, j0, j1, k0, k1; |
7639 | 0 | int left0, left1, left2, right0, right1, right2, join0, join1, join2; |
7640 | 0 | int leftFirst, rightFirst, firstPt; |
7641 | |
|
7642 | 0 | pathOut = new SplashPath(); |
7643 | |
|
7644 | 0 | if (path->length == 0) { |
7645 | 0 | return pathOut; |
7646 | 0 | } |
7647 | | |
7648 | 0 | if (flatten) { |
7649 | 0 | pathIn = flattenPath(path, state->matrix, state->flatness); |
7650 | 0 | if (state->lineDashLength > 0) { |
7651 | 0 | dashPath = makeDashedPath(pathIn); |
7652 | 0 | delete pathIn; |
7653 | 0 | pathIn = dashPath; |
7654 | 0 | if (pathIn->length == 0) { |
7655 | 0 | delete pathIn; |
7656 | 0 | return pathOut; |
7657 | 0 | } |
7658 | 0 | } |
7659 | 0 | } else { |
7660 | 0 | pathIn = path; |
7661 | 0 | } |
7662 | | |
7663 | 0 | subpathStart0 = subpathStart1 = 0; // make gcc happy |
7664 | 0 | seg = 0; // make gcc happy |
7665 | 0 | closed = gFalse; // make gcc happy |
7666 | 0 | left0 = left1 = right0 = right1 = join0 = join1 = 0; // make gcc happy |
7667 | 0 | leftFirst = rightFirst = firstPt = 0; // make gcc happy |
7668 | |
|
7669 | 0 | i0 = 0; |
7670 | 0 | for (i1 = i0; |
7671 | 0 | !(pathIn->flags[i1] & splashPathLast) && |
7672 | 0 | i1 + 1 < pathIn->length && |
7673 | 0 | pathIn->pts[i1+1].x == pathIn->pts[i1].x && |
7674 | 0 | pathIn->pts[i1+1].y == pathIn->pts[i1].y; |
7675 | 0 | ++i1) ; |
7676 | |
|
7677 | 0 | while (i1 < pathIn->length) { |
7678 | 0 | if ((first = pathIn->flags[i0] & splashPathFirst)) { |
7679 | 0 | subpathStart0 = i0; |
7680 | 0 | subpathStart1 = i1; |
7681 | 0 | seg = 0; |
7682 | 0 | closed = pathIn->flags[i0] & splashPathClosed; |
7683 | 0 | } |
7684 | 0 | j0 = i1 + 1; |
7685 | 0 | if (j0 < pathIn->length) { |
7686 | 0 | for (j1 = j0; |
7687 | 0 | !(pathIn->flags[j1] & splashPathLast) && |
7688 | 0 | j1 + 1 < pathIn->length && |
7689 | 0 | pathIn->pts[j1+1].x == pathIn->pts[j1].x && |
7690 | 0 | pathIn->pts[j1+1].y == pathIn->pts[j1].y; |
7691 | 0 | ++j1) ; |
7692 | 0 | } else { |
7693 | 0 | j1 = j0; |
7694 | 0 | } |
7695 | 0 | if (pathIn->flags[i1] & splashPathLast) { |
7696 | 0 | if (first && lineCap == splashLineCapRound) { |
7697 | | // special case: zero-length subpath with round line caps --> |
7698 | | // draw a circle |
7699 | 0 | pathOut->moveTo(pathIn->pts[i0].x + (SplashCoord)0.5 * w, |
7700 | 0 | pathIn->pts[i0].y); |
7701 | 0 | pathOut->curveTo(pathIn->pts[i0].x + (SplashCoord)0.5 * w, |
7702 | 0 | pathIn->pts[i0].y + bezierCircle2 * w, |
7703 | 0 | pathIn->pts[i0].x + bezierCircle2 * w, |
7704 | 0 | pathIn->pts[i0].y + (SplashCoord)0.5 * w, |
7705 | 0 | pathIn->pts[i0].x, |
7706 | 0 | pathIn->pts[i0].y + (SplashCoord)0.5 * w); |
7707 | 0 | pathOut->curveTo(pathIn->pts[i0].x - bezierCircle2 * w, |
7708 | 0 | pathIn->pts[i0].y + (SplashCoord)0.5 * w, |
7709 | 0 | pathIn->pts[i0].x - (SplashCoord)0.5 * w, |
7710 | 0 | pathIn->pts[i0].y + bezierCircle2 * w, |
7711 | 0 | pathIn->pts[i0].x - (SplashCoord)0.5 * w, |
7712 | 0 | pathIn->pts[i0].y); |
7713 | 0 | pathOut->curveTo(pathIn->pts[i0].x - (SplashCoord)0.5 * w, |
7714 | 0 | pathIn->pts[i0].y - bezierCircle2 * w, |
7715 | 0 | pathIn->pts[i0].x - bezierCircle2 * w, |
7716 | 0 | pathIn->pts[i0].y - (SplashCoord)0.5 * w, |
7717 | 0 | pathIn->pts[i0].x, |
7718 | 0 | pathIn->pts[i0].y - (SplashCoord)0.5 * w); |
7719 | 0 | pathOut->curveTo(pathIn->pts[i0].x + bezierCircle2 * w, |
7720 | 0 | pathIn->pts[i0].y - (SplashCoord)0.5 * w, |
7721 | 0 | pathIn->pts[i0].x + (SplashCoord)0.5 * w, |
7722 | 0 | pathIn->pts[i0].y - bezierCircle2 * w, |
7723 | 0 | pathIn->pts[i0].x + (SplashCoord)0.5 * w, |
7724 | 0 | pathIn->pts[i0].y); |
7725 | 0 | pathOut->close(); |
7726 | 0 | } |
7727 | 0 | i0 = j0; |
7728 | 0 | i1 = j1; |
7729 | 0 | continue; |
7730 | 0 | } |
7731 | 0 | last = pathIn->flags[j1] & splashPathLast; |
7732 | 0 | if (last) { |
7733 | 0 | k0 = subpathStart1 + 1; |
7734 | 0 | } else { |
7735 | 0 | k0 = j1 + 1; |
7736 | 0 | } |
7737 | 0 | for (k1 = k0; |
7738 | 0 | !(pathIn->flags[k1] & splashPathLast) && |
7739 | 0 | k1 + 1 < pathIn->length && |
7740 | 0 | pathIn->pts[k1+1].x == pathIn->pts[k1].x && |
7741 | 0 | pathIn->pts[k1+1].y == pathIn->pts[k1].y; |
7742 | 0 | ++k1) ; |
7743 | | |
7744 | | // compute the deltas for segment (i1, j0) |
7745 | | #if USE_FIXEDPOINT |
7746 | | // the 1/d value can be small, which introduces significant |
7747 | | // inaccuracies in fixed point mode |
7748 | | d = splashDist(pathIn->pts[i1].x, pathIn->pts[i1].y, |
7749 | | pathIn->pts[j0].x, pathIn->pts[j0].y); |
7750 | | dx = (pathIn->pts[j0].x - pathIn->pts[i1].x) / d; |
7751 | | dy = (pathIn->pts[j0].y - pathIn->pts[i1].y) / d; |
7752 | | #else |
7753 | 0 | d = (SplashCoord)1 / splashDist(pathIn->pts[i1].x, pathIn->pts[i1].y, |
7754 | 0 | pathIn->pts[j0].x, pathIn->pts[j0].y); |
7755 | 0 | dx = d * (pathIn->pts[j0].x - pathIn->pts[i1].x); |
7756 | 0 | dy = d * (pathIn->pts[j0].y - pathIn->pts[i1].y); |
7757 | 0 | #endif |
7758 | 0 | wdx = (SplashCoord)0.5 * w * dx; |
7759 | 0 | wdy = (SplashCoord)0.5 * w * dy; |
7760 | | |
7761 | | // draw the start cap |
7762 | 0 | if (i0 == subpathStart0) { |
7763 | 0 | firstPt = pathOut->length; |
7764 | 0 | } |
7765 | 0 | if (first && !closed) { |
7766 | 0 | switch (lineCap) { |
7767 | 0 | case splashLineCapButt: |
7768 | 0 | pathOut->moveTo(pathIn->pts[i0].x - wdy, pathIn->pts[i0].y + wdx); |
7769 | 0 | pathOut->lineTo(pathIn->pts[i0].x + wdy, pathIn->pts[i0].y - wdx); |
7770 | 0 | break; |
7771 | 0 | case splashLineCapRound: |
7772 | 0 | pathOut->moveTo(pathIn->pts[i0].x - wdy, pathIn->pts[i0].y + wdx); |
7773 | 0 | pathOut->curveTo(pathIn->pts[i0].x - wdy - bezierCircle * wdx, |
7774 | 0 | pathIn->pts[i0].y + wdx - bezierCircle * wdy, |
7775 | 0 | pathIn->pts[i0].x - wdx - bezierCircle * wdy, |
7776 | 0 | pathIn->pts[i0].y - wdy + bezierCircle * wdx, |
7777 | 0 | pathIn->pts[i0].x - wdx, |
7778 | 0 | pathIn->pts[i0].y - wdy); |
7779 | 0 | pathOut->curveTo(pathIn->pts[i0].x - wdx + bezierCircle * wdy, |
7780 | 0 | pathIn->pts[i0].y - wdy - bezierCircle * wdx, |
7781 | 0 | pathIn->pts[i0].x + wdy - bezierCircle * wdx, |
7782 | 0 | pathIn->pts[i0].y - wdx - bezierCircle * wdy, |
7783 | 0 | pathIn->pts[i0].x + wdy, |
7784 | 0 | pathIn->pts[i0].y - wdx); |
7785 | 0 | break; |
7786 | 0 | case splashLineCapProjecting: |
7787 | 0 | pathOut->moveTo(pathIn->pts[i0].x - wdx - wdy, |
7788 | 0 | pathIn->pts[i0].y + wdx - wdy); |
7789 | 0 | pathOut->lineTo(pathIn->pts[i0].x - wdx + wdy, |
7790 | 0 | pathIn->pts[i0].y - wdx - wdy); |
7791 | 0 | break; |
7792 | 0 | } |
7793 | 0 | } else { |
7794 | 0 | pathOut->moveTo(pathIn->pts[i0].x - wdy, pathIn->pts[i0].y + wdx); |
7795 | 0 | pathOut->lineTo(pathIn->pts[i0].x + wdy, pathIn->pts[i0].y - wdx); |
7796 | 0 | } |
7797 | | |
7798 | | // draw the left side of the segment rectangle and the end cap |
7799 | 0 | left2 = pathOut->length - 1; |
7800 | 0 | if (last && !closed) { |
7801 | 0 | switch (lineCap) { |
7802 | 0 | case splashLineCapButt: |
7803 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy, pathIn->pts[j0].y - wdx); |
7804 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdy, pathIn->pts[j0].y + wdx); |
7805 | 0 | break; |
7806 | 0 | case splashLineCapRound: |
7807 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy, pathIn->pts[j0].y - wdx); |
7808 | 0 | pathOut->curveTo(pathIn->pts[j0].x + wdy + bezierCircle * wdx, |
7809 | 0 | pathIn->pts[j0].y - wdx + bezierCircle * wdy, |
7810 | 0 | pathIn->pts[j0].x + wdx + bezierCircle * wdy, |
7811 | 0 | pathIn->pts[j0].y + wdy - bezierCircle * wdx, |
7812 | 0 | pathIn->pts[j0].x + wdx, |
7813 | 0 | pathIn->pts[j0].y + wdy); |
7814 | 0 | pathOut->curveTo(pathIn->pts[j0].x + wdx - bezierCircle * wdy, |
7815 | 0 | pathIn->pts[j0].y + wdy + bezierCircle * wdx, |
7816 | 0 | pathIn->pts[j0].x - wdy + bezierCircle * wdx, |
7817 | 0 | pathIn->pts[j0].y + wdx + bezierCircle * wdy, |
7818 | 0 | pathIn->pts[j0].x - wdy, |
7819 | 0 | pathIn->pts[j0].y + wdx); |
7820 | 0 | break; |
7821 | 0 | case splashLineCapProjecting: |
7822 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy + wdx, |
7823 | 0 | pathIn->pts[j0].y - wdx + wdy); |
7824 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdy + wdx, |
7825 | 0 | pathIn->pts[j0].y + wdx + wdy); |
7826 | 0 | break; |
7827 | 0 | } |
7828 | 0 | } else { |
7829 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy, pathIn->pts[j0].y - wdx); |
7830 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdy, pathIn->pts[j0].y + wdx); |
7831 | 0 | } |
7832 | | |
7833 | | // draw the right side of the segment rectangle |
7834 | | // (NB: if stroke adjustment is enabled, the closepath operation MUST |
7835 | | // add a segment because this segment is used for a hint) |
7836 | 0 | right2 = pathOut->length - 1; |
7837 | 0 | pathOut->close(state->strokeAdjust != splashStrokeAdjustOff); |
7838 | | |
7839 | | // draw the join |
7840 | 0 | join2 = pathOut->length; |
7841 | 0 | if (!last || closed) { |
7842 | | |
7843 | | // compute the deltas for segment (j1, k0) |
7844 | | #if USE_FIXEDPOINT |
7845 | | // the 1/d value can be small, which introduces significant |
7846 | | // inaccuracies in fixed point mode |
7847 | | d = splashDist(pathIn->pts[j1].x, pathIn->pts[j1].y, |
7848 | | pathIn->pts[k0].x, pathIn->pts[k0].y); |
7849 | | dxNext = (pathIn->pts[k0].x - pathIn->pts[j1].x) / d; |
7850 | | dyNext = (pathIn->pts[k0].y - pathIn->pts[j1].y) / d; |
7851 | | #else |
7852 | 0 | d = (SplashCoord)1 / splashDist(pathIn->pts[j1].x, pathIn->pts[j1].y, |
7853 | 0 | pathIn->pts[k0].x, pathIn->pts[k0].y); |
7854 | 0 | dxNext = d * (pathIn->pts[k0].x - pathIn->pts[j1].x); |
7855 | 0 | dyNext = d * (pathIn->pts[k0].y - pathIn->pts[j1].y); |
7856 | 0 | #endif |
7857 | 0 | wdxNext = (SplashCoord)0.5 * w * dxNext; |
7858 | 0 | wdyNext = (SplashCoord)0.5 * w * dyNext; |
7859 | | |
7860 | | // compute the join parameters |
7861 | 0 | crossprod = dx * dyNext - dy * dxNext; |
7862 | 0 | dotprod = -(dx * dxNext + dy * dyNext); |
7863 | 0 | if (dotprod > 0.9999) { |
7864 | | // avoid a divide-by-zero -- set miter to something arbitrary |
7865 | | // such that sqrt(miter) will exceed miterLimit (and m is never |
7866 | | // used in that situation) |
7867 | | // (note: the comparison value (0.9999) has to be less than |
7868 | | // 1-epsilon, where epsilon is the smallest value |
7869 | | // representable in the fixed point format) |
7870 | 0 | miter = (state->miterLimit + 1) * (state->miterLimit + 1); |
7871 | 0 | m = 0; |
7872 | 0 | } else { |
7873 | 0 | miter = (SplashCoord)2 / ((SplashCoord)1 - dotprod); |
7874 | 0 | if (miter < 1) { |
7875 | | // this can happen because of floating point inaccuracies |
7876 | 0 | miter = 1; |
7877 | 0 | } |
7878 | 0 | m = splashSqrt(miter - 1); |
7879 | 0 | } |
7880 | | |
7881 | | // round join |
7882 | 0 | if (lineJoin == splashLineJoinRound) { |
7883 | | // join angle < 180 |
7884 | 0 | if (crossprod < 0) { |
7885 | 0 | angle = atan2((double)dx, (double)-dy); |
7886 | 0 | angleNext = atan2((double)dxNext, (double)-dyNext); |
7887 | 0 | if (angle < angleNext) { |
7888 | 0 | angle += 2 * M_PI; |
7889 | 0 | } |
7890 | 0 | dAngle = (angle - angleNext) / M_PI; |
7891 | 0 | if (dAngle < 0.501) { |
7892 | | // span angle is <= 90 degrees -> draw a single arc |
7893 | 0 | kappa = dAngle * bezierCircle * w; |
7894 | 0 | cx1 = pathIn->pts[j0].x - wdy + kappa * dx; |
7895 | 0 | cy1 = pathIn->pts[j0].y + wdx + kappa * dy; |
7896 | 0 | cx2 = pathIn->pts[j0].x - wdyNext - kappa * dxNext; |
7897 | 0 | cy2 = pathIn->pts[j0].y + wdxNext - kappa * dyNext; |
7898 | 0 | pathOut->moveTo(pathIn->pts[j0].x, pathIn->pts[j0].y); |
7899 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdyNext, |
7900 | 0 | pathIn->pts[j0].y + wdxNext); |
7901 | 0 | pathOut->curveTo(cx2, cy2, cx1, cy1, |
7902 | 0 | pathIn->pts[j0].x - wdy, |
7903 | 0 | pathIn->pts[j0].y + wdx); |
7904 | 0 | } else { |
7905 | | // span angle is > 90 degrees -> split into two arcs |
7906 | 0 | dJoin = splashDist(-wdy, wdx, -wdyNext, wdxNext); |
7907 | 0 | if (dJoin > 0) { |
7908 | 0 | dxJoin = (-wdyNext + wdy) / dJoin; |
7909 | 0 | dyJoin = (wdxNext - wdx) / dJoin; |
7910 | 0 | xc = pathIn->pts[j0].x |
7911 | 0 | + (SplashCoord)0.5 * w |
7912 | 0 | * cos((double)((SplashCoord)0.5 * (angle + angleNext))); |
7913 | 0 | yc = pathIn->pts[j0].y |
7914 | 0 | + (SplashCoord)0.5 * w |
7915 | 0 | * sin((double)((SplashCoord)0.5 * (angle + angleNext))); |
7916 | 0 | kappa = dAngle * bezierCircle2 * w; |
7917 | 0 | cx1 = pathIn->pts[j0].x - wdy + kappa * dx; |
7918 | 0 | cy1 = pathIn->pts[j0].y + wdx + kappa * dy; |
7919 | 0 | cx2 = xc - kappa * dxJoin; |
7920 | 0 | cy2 = yc - kappa * dyJoin; |
7921 | 0 | cx3 = xc + kappa * dxJoin; |
7922 | 0 | cy3 = yc + kappa * dyJoin; |
7923 | 0 | cx4 = pathIn->pts[j0].x - wdyNext - kappa * dxNext; |
7924 | 0 | cy4 = pathIn->pts[j0].y + wdxNext - kappa * dyNext; |
7925 | 0 | pathOut->moveTo(pathIn->pts[j0].x, pathIn->pts[j0].y); |
7926 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdyNext, |
7927 | 0 | pathIn->pts[j0].y + wdxNext); |
7928 | 0 | pathOut->curveTo(cx4, cy4, cx3, cy3, xc, yc); |
7929 | 0 | pathOut->curveTo(cx2, cy2, cx1, cy1, |
7930 | 0 | pathIn->pts[j0].x - wdy, |
7931 | 0 | pathIn->pts[j0].y + wdx); |
7932 | 0 | } |
7933 | 0 | } |
7934 | | |
7935 | | // join angle >= 180 |
7936 | 0 | } else { |
7937 | 0 | angle = atan2((double)-dx, (double)dy); |
7938 | 0 | angleNext = atan2((double)-dxNext, (double)dyNext); |
7939 | 0 | if (angleNext < angle) { |
7940 | 0 | angleNext += 2 * M_PI; |
7941 | 0 | } |
7942 | 0 | dAngle = (angleNext - angle) / M_PI; |
7943 | 0 | if (dAngle < 0.501) { |
7944 | | // span angle is <= 90 degrees -> draw a single arc |
7945 | 0 | kappa = dAngle * bezierCircle * w; |
7946 | 0 | cx1 = pathIn->pts[j0].x + wdy + kappa * dx; |
7947 | 0 | cy1 = pathIn->pts[j0].y - wdx + kappa * dy; |
7948 | 0 | cx2 = pathIn->pts[j0].x + wdyNext - kappa * dxNext; |
7949 | 0 | cy2 = pathIn->pts[j0].y - wdxNext - kappa * dyNext; |
7950 | 0 | pathOut->moveTo(pathIn->pts[j0].x, pathIn->pts[j0].y); |
7951 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy, |
7952 | 0 | pathIn->pts[j0].y - wdx); |
7953 | 0 | pathOut->curveTo(cx1, cy1, cx2, cy2, |
7954 | 0 | pathIn->pts[j0].x + wdyNext, |
7955 | 0 | pathIn->pts[j0].y - wdxNext); |
7956 | 0 | } else { |
7957 | | // span angle is > 90 degrees -> split into two arcs |
7958 | 0 | dJoin = splashDist(wdy, -wdx, wdyNext, -wdxNext); |
7959 | 0 | if (dJoin > 0) { |
7960 | 0 | dxJoin = (wdyNext - wdy) / dJoin; |
7961 | 0 | dyJoin = (-wdxNext + wdx) / dJoin; |
7962 | 0 | xc = pathIn->pts[j0].x |
7963 | 0 | + (SplashCoord)0.5 * w |
7964 | 0 | * cos((double)((SplashCoord)0.5 * (angle + angleNext))); |
7965 | 0 | yc = pathIn->pts[j0].y |
7966 | 0 | + (SplashCoord)0.5 * w |
7967 | 0 | * sin((double)((SplashCoord)0.5 * (angle + angleNext))); |
7968 | 0 | kappa = dAngle * bezierCircle2 * w; |
7969 | 0 | cx1 = pathIn->pts[j0].x + wdy + kappa * dx; |
7970 | 0 | cy1 = pathIn->pts[j0].y - wdx + kappa * dy; |
7971 | 0 | cx2 = xc - kappa * dxJoin; |
7972 | 0 | cy2 = yc - kappa * dyJoin; |
7973 | 0 | cx3 = xc + kappa * dxJoin; |
7974 | 0 | cy3 = yc + kappa * dyJoin; |
7975 | 0 | cx4 = pathIn->pts[j0].x + wdyNext - kappa * dxNext; |
7976 | 0 | cy4 = pathIn->pts[j0].y - wdxNext - kappa * dyNext; |
7977 | 0 | pathOut->moveTo(pathIn->pts[j0].x, pathIn->pts[j0].y); |
7978 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy, |
7979 | 0 | pathIn->pts[j0].y - wdx); |
7980 | 0 | pathOut->curveTo(cx1, cy1, cx2, cy2, xc, yc); |
7981 | 0 | pathOut->curveTo(cx3, cy3, cx4, cy4, |
7982 | 0 | pathIn->pts[j0].x + wdyNext, |
7983 | 0 | pathIn->pts[j0].y - wdxNext); |
7984 | 0 | } |
7985 | 0 | } |
7986 | 0 | } |
7987 | |
|
7988 | 0 | } else { |
7989 | 0 | pathOut->moveTo(pathIn->pts[j0].x, pathIn->pts[j0].y); |
7990 | | |
7991 | | // join angle < 180 |
7992 | 0 | if (crossprod < 0) { |
7993 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdyNext, |
7994 | 0 | pathIn->pts[j0].y + wdxNext); |
7995 | | // miter join inside limit |
7996 | 0 | if (lineJoin == splashLineJoinMiter && |
7997 | 0 | splashSqrt(miter) <= state->miterLimit) { |
7998 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdy + wdx * m, |
7999 | 0 | pathIn->pts[j0].y + wdx + wdy * m); |
8000 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdy, |
8001 | 0 | pathIn->pts[j0].y + wdx); |
8002 | | // bevel join or miter join outside limit |
8003 | 0 | } else { |
8004 | 0 | pathOut->lineTo(pathIn->pts[j0].x - wdy, |
8005 | 0 | pathIn->pts[j0].y + wdx); |
8006 | 0 | } |
8007 | | |
8008 | | // join angle >= 180 |
8009 | 0 | } else { |
8010 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy, |
8011 | 0 | pathIn->pts[j0].y - wdx); |
8012 | | // miter join inside limit |
8013 | 0 | if (lineJoin == splashLineJoinMiter && |
8014 | 0 | splashSqrt(miter) <= state->miterLimit) { |
8015 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdy + wdx * m, |
8016 | 0 | pathIn->pts[j0].y - wdx + wdy * m); |
8017 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdyNext, |
8018 | 0 | pathIn->pts[j0].y - wdxNext); |
8019 | | // bevel join or miter join outside limit |
8020 | 0 | } else { |
8021 | 0 | pathOut->lineTo(pathIn->pts[j0].x + wdyNext, |
8022 | 0 | pathIn->pts[j0].y - wdxNext); |
8023 | 0 | } |
8024 | 0 | } |
8025 | 0 | } |
8026 | |
|
8027 | 0 | pathOut->close(); |
8028 | 0 | } |
8029 | | |
8030 | | // add stroke adjustment hints |
8031 | 0 | if (state->strokeAdjust != splashStrokeAdjustOff) { |
8032 | | |
8033 | | // subpath with one segment |
8034 | 0 | if (seg == 0 && last) { |
8035 | 0 | switch (lineCap) { |
8036 | 0 | case splashLineCapButt: |
8037 | 0 | pathOut->addStrokeAdjustHint(firstPt, left2 + 1, |
8038 | 0 | firstPt, pathOut->length - 1); |
8039 | 0 | break; |
8040 | 0 | case splashLineCapProjecting: |
8041 | 0 | pathOut->addStrokeAdjustHint(firstPt, left2 + 1, |
8042 | 0 | firstPt, pathOut->length - 1, gTrue); |
8043 | 0 | break; |
8044 | 0 | case splashLineCapRound: |
8045 | 0 | break; |
8046 | 0 | } |
8047 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8048 | 0 | firstPt, pathOut->length - 1); |
8049 | 0 | } else { |
8050 | | |
8051 | | // start of subpath |
8052 | 0 | if (seg == 1) { |
8053 | | |
8054 | | // start cap |
8055 | 0 | if (!closed) { |
8056 | 0 | switch (lineCap) { |
8057 | 0 | case splashLineCapButt: |
8058 | 0 | pathOut->addStrokeAdjustHint(firstPt, left1 + 1, |
8059 | 0 | firstPt, firstPt + 1); |
8060 | 0 | pathOut->addStrokeAdjustHint(firstPt, left1 + 1, |
8061 | 0 | right1 + 1, right1 + 1); |
8062 | 0 | break; |
8063 | 0 | case splashLineCapProjecting: |
8064 | 0 | pathOut->addStrokeAdjustHint(firstPt, left1 + 1, |
8065 | 0 | firstPt, firstPt + 1, gTrue); |
8066 | 0 | pathOut->addStrokeAdjustHint(firstPt, left1 + 1, |
8067 | 0 | right1 + 1, right1 + 1, gTrue); |
8068 | 0 | break; |
8069 | 0 | case splashLineCapRound: |
8070 | 0 | break; |
8071 | 0 | } |
8072 | 0 | } |
8073 | | |
8074 | | // first segment |
8075 | 0 | pathOut->addStrokeAdjustHint(left1, right1, firstPt, left2); |
8076 | 0 | pathOut->addStrokeAdjustHint(left1, right1, right2 + 1, right2 + 1); |
8077 | 0 | } |
8078 | | |
8079 | | // middle of subpath |
8080 | 0 | if (seg > 1) { |
8081 | 0 | pathOut->addStrokeAdjustHint(left1, right1, left0 + 1, right0); |
8082 | 0 | pathOut->addStrokeAdjustHint(left1, right1, join0, left2); |
8083 | 0 | pathOut->addStrokeAdjustHint(left1, right1, right2 + 1, right2 + 1); |
8084 | 0 | } |
8085 | | |
8086 | | // end of subpath |
8087 | 0 | if (last) { |
8088 | |
|
8089 | 0 | if (closed) { |
8090 | | // first segment |
8091 | 0 | pathOut->addStrokeAdjustHint(leftFirst, rightFirst, |
8092 | 0 | left2 + 1, right2); |
8093 | 0 | pathOut->addStrokeAdjustHint(leftFirst, rightFirst, |
8094 | 0 | join2, pathOut->length - 1); |
8095 | | |
8096 | | // last segment |
8097 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8098 | 0 | left1 + 1, right1); |
8099 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8100 | 0 | join1, pathOut->length - 1); |
8101 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8102 | 0 | leftFirst - 1, leftFirst); |
8103 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8104 | 0 | rightFirst + 1, rightFirst + 1); |
8105 | |
|
8106 | 0 | } else { |
8107 | | |
8108 | | // last segment |
8109 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8110 | 0 | left1 + 1, right1); |
8111 | 0 | pathOut->addStrokeAdjustHint(left2, right2, |
8112 | 0 | join1, pathOut->length - 1); |
8113 | | |
8114 | | // end cap |
8115 | 0 | switch (lineCap) { |
8116 | 0 | case splashLineCapButt: |
8117 | 0 | pathOut->addStrokeAdjustHint(left2 - 1, left2 + 1, |
8118 | 0 | left2 + 1, left2 + 2); |
8119 | 0 | break; |
8120 | 0 | case splashLineCapProjecting: |
8121 | 0 | pathOut->addStrokeAdjustHint(left2 - 1, left2 + 1, |
8122 | 0 | left2 + 1, left2 + 2, gTrue); |
8123 | 0 | break; |
8124 | 0 | case splashLineCapRound: |
8125 | 0 | break; |
8126 | 0 | } |
8127 | 0 | } |
8128 | 0 | } |
8129 | 0 | } |
8130 | | |
8131 | 0 | left0 = left1; |
8132 | 0 | left1 = left2; |
8133 | 0 | right0 = right1; |
8134 | 0 | right1 = right2; |
8135 | 0 | join0 = join1; |
8136 | 0 | join1 = join2; |
8137 | 0 | if (seg == 0) { |
8138 | 0 | leftFirst = left2; |
8139 | 0 | rightFirst = right2; |
8140 | 0 | } |
8141 | 0 | } |
8142 | | |
8143 | 0 | i0 = j0; |
8144 | 0 | i1 = j1; |
8145 | 0 | ++seg; |
8146 | 0 | } |
8147 | | |
8148 | 0 | if (pathIn != path) { |
8149 | 0 | delete pathIn; |
8150 | 0 | } |
8151 | |
|
8152 | 0 | return pathOut; |
8153 | 0 | } |
8154 | | |
8155 | | SplashClipResult Splash::limitRectToClipRect(int *xMin, int *yMin, |
8156 | 0 | int *xMax, int *yMax) { |
8157 | 0 | int t; |
8158 | |
|
8159 | 0 | if ((t = state->clip->getXMinI(state->strokeAdjust)) > *xMin) { |
8160 | 0 | *xMin = t; |
8161 | 0 | } |
8162 | 0 | if ((t = state->clip->getXMaxI(state->strokeAdjust) + 1) < *xMax) { |
8163 | 0 | *xMax = t; |
8164 | 0 | } |
8165 | 0 | if ((t = state->clip->getYMinI(state->strokeAdjust)) > *yMin) { |
8166 | 0 | *yMin = t; |
8167 | 0 | } |
8168 | 0 | if ((t = state->clip->getYMaxI(state->strokeAdjust) + 1) < *yMax) { |
8169 | 0 | *yMax = t; |
8170 | 0 | } |
8171 | 0 | if (*xMin >= *xMax || *yMin >= *yMax) { |
8172 | 0 | return splashClipAllOutside; |
8173 | 0 | } |
8174 | 0 | return state->clip->testRect(*xMin, *yMin, *xMax - 1, *yMax - 1, |
8175 | 0 | state->strokeAdjust); |
8176 | 0 | } |
8177 | | |
8178 | 0 | void Splash::dumpPath(SplashPath *path) { |
8179 | 0 | int i; |
8180 | |
|
8181 | 0 | for (i = 0; i < path->length; ++i) { |
8182 | 0 | printf(" %3d: x=%8.2f y=%8.2f%s%s%s%s\n", |
8183 | 0 | i, (double)path->pts[i].x, (double)path->pts[i].y, |
8184 | 0 | (path->flags[i] & splashPathFirst) ? " first" : "", |
8185 | 0 | (path->flags[i] & splashPathLast) ? " last" : "", |
8186 | 0 | (path->flags[i] & splashPathClosed) ? " closed" : "", |
8187 | 0 | (path->flags[i] & splashPathCurve) ? " curve" : ""); |
8188 | 0 | } |
8189 | 0 | if (path->hintsLength == 0) { |
8190 | 0 | printf(" no hints\n"); |
8191 | 0 | } else { |
8192 | 0 | for (i = 0; i < path->hintsLength; ++i) { |
8193 | 0 | printf(" hint %3d: ctrl0=%d ctrl1=%d pts=%d..%d\n", |
8194 | 0 | i, path->hints[i].ctrl0, path->hints[i].ctrl1, |
8195 | 0 | path->hints[i].firstPt, path->hints[i].lastPt); |
8196 | 0 | } |
8197 | 0 | } |
8198 | 0 | } |
8199 | | |
8200 | 0 | void Splash::dumpXPath(SplashXPath *path) { |
8201 | 0 | int i; |
8202 | |
|
8203 | 0 | for (i = 0; i < path->length; ++i) { |
8204 | 0 | printf(" %4d: x0=%8.2f y0=%8.2f x1=%8.2f y1=%8.2f count=%d\n", |
8205 | 0 | i, (double)path->segs[i].x0, (double)path->segs[i].y0, |
8206 | 0 | (double)path->segs[i].x1, (double)path->segs[i].y1, |
8207 | 0 | path->segs[i].count); |
8208 | 0 | } |
8209 | 0 | } |
8210 | | |