The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/effects/SkPorterDuff.cpp
gfx/skia/trunk/src/effects/SkPorterDuff.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:2b89bcdecb82 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #include "SkPorterDuff.h" | |
| 11 #include "SkXfermode.h" | |
| 12 | |
| 13 /* This file just exists as a compatibility layer, gluing the PorterDuff API | |
| 14 into the (extended) SkXfermode API | |
| 15 */ | |
| 16 | |
| 17 #define MAKE_PAIR(mode) { SkPorterDuff::k##mode##_Mode, SkXfermode::k##mode##_Mode } | |
| 18 | |
| 19 // this table must be in SkPorterDuff::Mode order, so it can be indexed directly | |
| 20 // with a porterduff mode. | |
| 21 static const struct Pair { | |
| 22 SkPorterDuff::Mode fPD; | |
| 23 SkXfermode::Mode fXF; | |
| 24 } gPairs[] = { | |
| 25 MAKE_PAIR(Clear), | |
| 26 MAKE_PAIR(Src), | |
| 27 MAKE_PAIR(Dst), | |
| 28 MAKE_PAIR(SrcOver), | |
| 29 MAKE_PAIR(DstOver), | |
| 30 MAKE_PAIR(SrcIn), | |
| 31 MAKE_PAIR(DstIn), | |
| 32 MAKE_PAIR(SrcOut), | |
| 33 MAKE_PAIR(DstOut), | |
| 34 MAKE_PAIR(SrcATop), | |
| 35 MAKE_PAIR(DstATop), | |
| 36 MAKE_PAIR(Xor), | |
| 37 MAKE_PAIR(Darken), | |
| 38 MAKE_PAIR(Lighten), | |
| 39 MAKE_PAIR(Modulate), | |
| 40 MAKE_PAIR(Screen), | |
| 41 { SkPorterDuff::kAdd_Mode, SkXfermode::kPlus_Mode }, | |
| 42 #ifdef SK_BUILD_FOR_ANDROID | |
| 43 MAKE_PAIR(Overlay), | |
| 44 #endif | |
| 45 }; | |
| 46 | |
| 47 static bool find_pdmode(SkXfermode::Mode src, SkPorterDuff::Mode* dst) { | |
| 48 const Pair* pairs = gPairs; | |
| 49 for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) { | |
| 50 if (pairs[i].fXF == src) { | |
| 51 if (dst) { | |
| 52 *dst = pairs[i].fPD; | |
| 53 } | |
| 54 return true; | |
| 55 } | |
| 56 } | |
| 57 return false; | |
| 58 } | |
| 59 | |
| 60 SkXfermode::Mode SkPorterDuff::ToXfermodeMode(Mode mode) { | |
| 61 SkASSERT((unsigned)mode < SkPorterDuff::kModeCount); | |
| 62 const Pair& pair = gPairs[mode]; | |
| 63 SkASSERT(pair.fPD == mode); | |
| 64 return pair.fXF; | |
| 65 } | |
| 66 | |
| 67 SkXfermode* SkPorterDuff::CreateXfermode(SkPorterDuff::Mode mode) { | |
| 68 const Pair& pair = gPairs[mode]; | |
| 69 SkASSERT(pair.fPD == mode); | |
| 70 return SkXfermode::Create(pair.fXF); | |
| 71 } | |
| 72 | |
| 73 bool SkPorterDuff::IsMode(SkXfermode* xfer, Mode* pdmode) { | |
| 74 SkXfermode::Mode xfmode; | |
| 75 if (!SkXfermode::AsMode(xfer, &xfmode)) { | |
| 76 return false; | |
| 77 } | |
| 78 return find_pdmode(xfmode, pdmode); | |
| 79 } | |
| 80 | |
| 81 SkXfermodeProc SkPorterDuff::GetXfermodeProc(Mode mode) { | |
| 82 return SkXfermode::GetProc(gPairs[mode].fXF); | |
| 83 } | |
| 84 | |
| 85 SkXfermodeProc16 SkPorterDuff::GetXfermodeProc16(Mode mode, SkColor srcColor) { | |
| 86 return SkXfermode::GetProc16(gPairs[mode].fXF, srcColor); | |
| 87 } |
