//========================================================================

//

// SplashState.cc

//

// Copyright 2003-2013 Glyph & Cog, LLC

//

//========================================================================

#include <aconf.h>

#include <string.h>

#include "gmem.h"

#include "gmempp.h"

#include "SplashPattern.h"

#include "SplashScreen.h"

#include "SplashClip.h"

#include "SplashBitmap.h"

#include "SplashState.h"

//------------------------------------------------------------------------

// SplashState

//------------------------------------------------------------------------

// number of components in each color mode

int splashColorModeNComps[] = {

  1, 1, 3, 3

#if SPLASH_CMYK

  , 4

#endif

};

SplashState::SplashState(int width, int height, GBool vectorAntialias,

       SplashScreenParams *screenParams) {

  SplashColor color;

  int i;

  matrix[0] = 1;  matrix[1] = 0;

  matrix[2] = 0;  matrix[3] = 1;

  matrix[4] = 0;  matrix[5] = 0;

  memset(&color, 0, sizeof(SplashColor));

  strokePattern = new SplashSolidColor(color);

  fillPattern = new SplashSolidColor(color);

  screen = new SplashScreen(screenParams);

  blendFunc = NULL;

  strokeAlpha = 1;

  fillAlpha = 1;

  lineWidth = 1;

  lineCap = splashLineCapButt;

  lineJoin = splashLineJoinMiter;

  miterLimit = 10;

  flatness = 1;

  lineDash = NULL;

  lineDashLength = 0;

  lineDashPhase = 0;

  strokeAdjust = splashStrokeAdjustOff;

  alphaIsShape = gFalse;

  clip = new SplashClip(0, 0, width, height);

  clipIsShared = gFalse;

  softMask = NULL;

  deleteSoftMask = gFalse;

  inNonIsolatedGroup = gFalse;

  inKnockoutGroup = gFalse;

#if SPLASH_CMYK

  rgbTransferR = (Guchar *)gmalloc(8 * 256);

  rgbTransferG = rgbTransferR + 256;

  rgbTransferB = rgbTransferG + 256;

  grayTransfer = rgbTransferB + 256;

  cmykTransferC = grayTransfer + 256;

  cmykTransferM = cmykTransferC + 256;

  cmykTransferY = cmykTransferM + 256;

  cmykTransferK = cmykTransferY + 256;

#else

  rgbTransferR = (Guchar *)gmalloc(4 * 256);

  rgbTransferG = rgbTransferR + 256;

  rgbTransferB = rgbTransferG + 256;

  grayTransfer = rgbTransferB + 256;

#endif

  for (i = 0; i < 256; ++i) {

    rgbTransferR[i] = (Guchar)i;

    rgbTransferG[i] = (Guchar)i;

    rgbTransferB[i] = (Guchar)i;

    grayTransfer[i] = (Guchar)i;

#if SPLASH_CMYK

    cmykTransferC[i] = (Guchar)i;

    cmykTransferM[i] = (Guchar)i;

    cmykTransferY[i] = (Guchar)i;

    cmykTransferK[i] = (Guchar)i;

#endif

  }

  transferIsShared = gFalse;

  overprintMask = 0xffffffff;

  enablePathSimplification = gFalse;

  next = NULL;

}

SplashState::SplashState(int width, int height, GBool vectorAntialias,

       SplashScreen *screenA) {

  SplashColor color;

  int i;

  matrix[0] = 1;  matrix[1] = 0;

  matrix[2] = 0;  matrix[3] = 1;

  matrix[4] = 0;  matrix[5] = 0;

  memset(&color, 0, sizeof(SplashColor));

  strokePattern = new SplashSolidColor(color);

  fillPattern = new SplashSolidColor(color);

  screen = screenA->copy();

  blendFunc = NULL;

  strokeAlpha = 1;

  fillAlpha = 1;

  lineWidth = 1;

  lineCap = splashLineCapButt;

  lineJoin = splashLineJoinMiter;

  miterLimit = 10;

  flatness = 1;

  lineDash = NULL;

  lineDashLength = 0;

  lineDashPhase = 0;

  strokeAdjust = splashStrokeAdjustOff;

  alphaIsShape = gFalse;

  clip = new SplashClip(0, 0, width, height);

  clipIsShared = gFalse;

  softMask = NULL;

  deleteSoftMask = gFalse;

  inNonIsolatedGroup = gFalse;

  inKnockoutGroup = gFalse;

#if SPLASH_CMYK

  rgbTransferR = (Guchar *)gmalloc(8 * 256);

  rgbTransferG = rgbTransferR + 256;

  rgbTransferB = rgbTransferG + 256;

  grayTransfer = rgbTransferB + 256;

  cmykTransferC = grayTransfer + 256;

  cmykTransferM = cmykTransferC + 256;

  cmykTransferY = cmykTransferM + 256;

  cmykTransferK = cmykTransferY + 256;

#else

  rgbTransferR = (Guchar *)gmalloc(4 * 256);

  rgbTransferG = rgbTransferR + 256;

  rgbTransferB = rgbTransferG + 256;

  grayTransfer = rgbTransferB + 256;

#endif

  for (i = 0; i < 256; ++i) {

    rgbTransferR[i] = (Guchar)i;

    rgbTransferG[i] = (Guchar)i;

    rgbTransferB[i] = (Guchar)i;

    grayTransfer[i] = (Guchar)i;

#if SPLASH_CMYK

    cmykTransferC[i] = (Guchar)i;

    cmykTransferM[i] = (Guchar)i;

    cmykTransferY[i] = (Guchar)i;

    cmykTransferK[i] = (Guchar)i;

#endif

  }

  transferIsShared = gFalse;

  overprintMask = 0xffffffff;

  enablePathSimplification = gFalse;

  next = NULL;

}

SplashState::SplashState(SplashState *state) {

  memcpy(matrix, state->matrix, 6 * sizeof(SplashCoord));

  strokePattern = state->strokePattern->copy();

  fillPattern = state->fillPattern->copy();

  screen = state->screen->copy();

  blendFunc = state->blendFunc;

  strokeAlpha = state->strokeAlpha;

  fillAlpha = state->fillAlpha;

  lineWidth = state->lineWidth;

  lineCap = state->lineCap;

  lineJoin = state->lineJoin;

  miterLimit = state->miterLimit;

  flatness = state->flatness;

  if (state->lineDash) {

    lineDashLength = state->lineDashLength;

    lineDash = (SplashCoord *)gmallocn(lineDashLength, sizeof(SplashCoord));

    memcpy(lineDash, state->lineDash, lineDashLength * sizeof(SplashCoord));

  } else {

    lineDash = NULL;

    lineDashLength = 0;

  }

  lineDashPhase = state->lineDashPhase;

  strokeAdjust = state->strokeAdjust;

  alphaIsShape = state->alphaIsShape;

  clip = state->clip;

  clipIsShared = gTrue;

  softMask = state->softMask;

  deleteSoftMask = gFalse;

  inNonIsolatedGroup = state->inNonIsolatedGroup;

  inKnockoutGroup = state->inKnockoutGroup;

  rgbTransferR = state->rgbTransferR;

  rgbTransferG = state->rgbTransferG;

  rgbTransferB = state->rgbTransferB;

  grayTransfer = state->grayTransfer;

#if SPLASH_CMYK

  cmykTransferC = state->cmykTransferC;

  cmykTransferM = state->cmykTransferM;

  cmykTransferY = state->cmykTransferY;

  cmykTransferK = state->cmykTransferK;

#endif

  transferIsShared = gTrue;

  overprintMask = state->overprintMask;

  enablePathSimplification = state->enablePathSimplification;

  next = NULL;

}

SplashState::~SplashState() {

  delete strokePattern;

  delete fillPattern;

  delete screen;

  gfree(lineDash);

  if (!clipIsShared) {

    delete clip;

  }

  if (!transferIsShared) {

    gfree(rgbTransferR);

  }

  if (deleteSoftMask && softMask) {

    delete softMask;

  }

}

void SplashState::setStrokePattern(SplashPattern *strokePatternA) {

  delete strokePattern;

  strokePattern = strokePatternA;

}

void SplashState::setFillPattern(SplashPattern *fillPatternA) {

  delete fillPattern;

  fillPattern = fillPatternA;

}

void SplashState::setScreen(SplashScreen *screenA) {

  delete screen;

  screen = screenA;

}

void SplashState::setLineDash(SplashCoord *lineDashA, int lineDashLengthA,

            SplashCoord lineDashPhaseA) {

  gfree(lineDash);

  lineDashLength = lineDashLengthA;

  if (lineDashLength > 0) {

    lineDash = (SplashCoord *)gmallocn(lineDashLength, sizeof(SplashCoord));

    memcpy(lineDash, lineDashA, lineDashLength * sizeof(SplashCoord));

  } else {

    lineDash = NULL;

  }

  lineDashPhase = lineDashPhaseA;

}

GBool SplashState::lineDashContainsZeroLengthDashes() {

  int i;

  if (lineDashLength == 0) {

    return gFalse;

  }

  // if the line dash array has an odd number of elements, we need to

  // check all of the elements; if the length is even, we only need to

  // check even-number elements

  if (lineDashLength & 1) {

    for (i = 0; i < lineDashLength; ++i) {

      if (lineDash[i] == 0) {

  return gTrue;

      }

    }

  } else {

    for (i = 0; i < lineDashLength; i += 2) {

      if (lineDash[i] == 0) {

  return gTrue;

      }

    }

  }

  return gFalse;

}

void SplashState::clipResetToRect(SplashCoord x0, SplashCoord y0,

          SplashCoord x1, SplashCoord y1) {

  if (clipIsShared) {

    clip = clip->copy();

    clipIsShared = gFalse;

  }

  clip->resetToRect(x0, y0, x1, y1);

}

SplashError SplashState::clipToRect(SplashCoord x0, SplashCoord y0,

            SplashCoord x1, SplashCoord y1) {

  if (clipIsShared) {

    clip = clip->copy();

    clipIsShared = gFalse;

  }

  return clip->clipToRect(x0, y0, x1, y1);

}

SplashError SplashState::clipToPath(SplashPath *path, GBool eo) {

  if (clipIsShared) {

    clip = clip->copy();

    clipIsShared = gFalse;

  }

  return clip->clipToPath(path, matrix, flatness, eo,

        enablePathSimplification, strokeAdjust);

}

void SplashState::setSoftMask(SplashBitmap *softMaskA, GBool deleteBitmap) {

  if (deleteSoftMask) {

    delete softMask;

  }

  softMask = softMaskA;

  deleteSoftMask = deleteBitmap;

}

void SplashState::setTransfer(Guchar *red, Guchar *green, Guchar *blue,

            Guchar *gray) {

#if SPLASH_CMYK

  int i;

#endif

  if (transferIsShared) {

#if SPLASH_CMYK

    rgbTransferR = (Guchar *)gmalloc(8 * 256);

    rgbTransferG = rgbTransferR + 256;

    rgbTransferB = rgbTransferG + 256;

    grayTransfer = rgbTransferB + 256;

    cmykTransferC = grayTransfer + 256;

    cmykTransferM = cmykTransferC + 256;

    cmykTransferY = cmykTransferM + 256;

    cmykTransferK = cmykTransferY + 256;

#else

    rgbTransferR = (Guchar *)gmalloc(4 * 256);

    rgbTransferG = rgbTransferR + 256;

    rgbTransferB = rgbTransferG + 256;

    grayTransfer = rgbTransferB + 256;

#endif

    transferIsShared = gFalse;

  }

  memcpy(rgbTransferR, red, 256);

  memcpy(rgbTransferG, green, 256);

  memcpy(rgbTransferB, blue, 256);

  memcpy(grayTransfer, gray, 256);

#if SPLASH_CMYK

  for (i = 0; i < 256; ++i) {

    cmykTransferC[i] = (Guchar)(255 - rgbTransferR[255 - i]);

    cmykTransferM[i] = (Guchar)(255 - rgbTransferG[255 - i]);

    cmykTransferY[i] = (Guchar)(255 - rgbTransferB[255 - i]);

    cmykTransferK[i] = (Guchar)(255 - grayTransfer[255 - i]);

  }

#endif

}