/work/obj-fuzz/dist/include/nsPoint.h
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #ifndef NSPOINT_H |
8 | | #define NSPOINT_H |
9 | | |
10 | | #include "nsCoord.h" |
11 | | #include "mozilla/gfx/BaseSize.h" |
12 | | #include "mozilla/gfx/BasePoint.h" |
13 | | #include "nsSize.h" |
14 | | #include "mozilla/gfx/Point.h" |
15 | | |
16 | | // nsIntPoint represents a point in one of the types of pixels. |
17 | | // Uses of nsIntPoint should eventually be converted to CSSIntPoint, |
18 | | // LayoutDeviceIntPoint, etc. (see layout/base/Units.h). |
19 | | typedef mozilla::gfx::IntPoint nsIntPoint; |
20 | | |
21 | | // nsPoint represents a point in app units. |
22 | | |
23 | | struct nsPoint : public mozilla::gfx::BasePoint<nscoord, nsPoint> { |
24 | | typedef mozilla::gfx::BasePoint<nscoord, nsPoint> Super; |
25 | | |
26 | 0 | nsPoint() : Super() {} |
27 | 0 | nsPoint(const nsPoint& aPoint) : Super(aPoint) {} |
28 | 0 | nsPoint(nscoord aX, nscoord aY) : Super(aX, aY) {} |
29 | | |
30 | | inline nsIntPoint ScaleToNearestPixels(float aXScale, float aYScale, |
31 | | nscoord aAppUnitsPerPixel) const; |
32 | | inline nsIntPoint ToNearestPixels(nscoord aAppUnitsPerPixel) const; |
33 | | |
34 | | /** |
35 | | * Return this point scaled to a different appunits per pixel (APP) ratio. |
36 | | * @param aFromAPP the APP to scale from |
37 | | * @param aToAPP the APP to scale to |
38 | | */ |
39 | | MOZ_MUST_USE inline nsPoint |
40 | | ScaleToOtherAppUnits(int32_t aFromAPP, int32_t aToAPP) const; |
41 | | |
42 | | MOZ_MUST_USE inline nsPoint |
43 | | RemoveResolution(const float resolution) const; |
44 | | MOZ_MUST_USE inline nsPoint |
45 | | ApplyResolution(const float resolution) const; |
46 | | }; |
47 | | |
48 | | inline nsPoint ToAppUnits(const nsIntPoint& aPoint, nscoord aAppUnitsPerPixel); |
49 | | |
50 | | inline nsIntPoint |
51 | | nsPoint::ScaleToNearestPixels(float aXScale, float aYScale, |
52 | | nscoord aAppUnitsPerPixel) const |
53 | 0 | { |
54 | 0 | return nsIntPoint( |
55 | 0 | NSToIntRoundUp(NSAppUnitsToDoublePixels(x, aAppUnitsPerPixel) * aXScale), |
56 | 0 | NSToIntRoundUp(NSAppUnitsToDoublePixels(y, aAppUnitsPerPixel) * aYScale)); |
57 | 0 | } |
58 | | |
59 | | inline nsIntPoint |
60 | | nsPoint::ToNearestPixels(nscoord aAppUnitsPerPixel) const |
61 | 0 | { |
62 | 0 | return ScaleToNearestPixels(1.0f, 1.0f, aAppUnitsPerPixel); |
63 | 0 | } |
64 | | |
65 | | inline nsPoint |
66 | | nsPoint::ScaleToOtherAppUnits(int32_t aFromAPP, int32_t aToAPP) const |
67 | 0 | { |
68 | 0 | if (aFromAPP != aToAPP) { |
69 | 0 | nsPoint point; |
70 | 0 | point.x = NSToCoordRound(NSCoordScale(x, aFromAPP, aToAPP)); |
71 | 0 | point.y = NSToCoordRound(NSCoordScale(y, aFromAPP, aToAPP)); |
72 | 0 | return point; |
73 | 0 | } |
74 | 0 | return *this; |
75 | 0 | } |
76 | | |
77 | | inline nsPoint |
78 | 0 | nsPoint::RemoveResolution(const float resolution) const { |
79 | 0 | if (resolution != 1.0f) { |
80 | 0 | nsPoint point; |
81 | 0 | point.x = NSToCoordRound(NSCoordToFloat(x) / resolution); |
82 | 0 | point.y = NSToCoordRound(NSCoordToFloat(y) / resolution); |
83 | 0 | return point; |
84 | 0 | } |
85 | 0 | return *this; |
86 | 0 | } |
87 | | |
88 | | inline nsPoint |
89 | 0 | nsPoint::ApplyResolution(const float resolution) const { |
90 | 0 | if (resolution != 1.0f) { |
91 | 0 | nsPoint point; |
92 | 0 | point.x = NSToCoordRound(NSCoordToFloat(x) * resolution); |
93 | 0 | point.y = NSToCoordRound(NSCoordToFloat(y) * resolution); |
94 | 0 | return point; |
95 | 0 | } |
96 | 0 | return *this; |
97 | 0 | } |
98 | | |
99 | | // app units are integer multiples of pixels, so no rounding needed |
100 | | inline nsPoint |
101 | | ToAppUnits(const nsIntPoint& aPoint, nscoord aAppUnitsPerPixel) |
102 | 0 | { |
103 | 0 | return nsPoint(NSIntPixelsToAppUnits(aPoint.x, aAppUnitsPerPixel), |
104 | 0 | NSIntPixelsToAppUnits(aPoint.y, aAppUnitsPerPixel)); |
105 | 0 | } |
106 | | |
107 | | #endif /* NSPOINT_H */ |