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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef GrStencilAndCoverTextContext_DEFINED | 8 #ifndef GrStencilAndCoverTextContext_DEFINED |
9 #define GrStencilAndCoverTextContext_DEFINED | 9 #define GrStencilAndCoverTextContext_DEFINED |
10 | 10 |
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25 class GrStencilAndCoverTextContext : public GrTextContext { | 25 class GrStencilAndCoverTextContext : public GrTextContext { |
26 public: | 26 public: |
27 GrStencilAndCoverTextContext(GrContext*, const SkDeviceProperties&); | 27 GrStencilAndCoverTextContext(GrContext*, const SkDeviceProperties&); |
28 virtual ~GrStencilAndCoverTextContext(); | 28 virtual ~GrStencilAndCoverTextContext(); |
29 | 29 |
30 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], | 30 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], |
31 size_t byteLength, | 31 size_t byteLength, |
32 SkScalar x, SkScalar y) SK_OVERRIDE; | 32 SkScalar x, SkScalar y) SK_OVERRIDE; |
33 virtual void drawPosText(const GrPaint&, const SkPaint&, | 33 virtual void drawPosText(const GrPaint&, const SkPaint&, |
34 const char text[], size_t byteLength, | 34 const char text[], size_t byteLength, |
35 const SkScalar pos[], SkScalar constY, | 35 const SkScalar pos[], int scalarsPerPosition, |
36 int scalarsPerPosition) SK_OVERRIDE; | 36 const SkPoint& offset) SK_OVERRIDE; |
37 | 37 |
38 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; | 38 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; |
39 | 39 |
40 private: | 40 private: |
41 static const int kGlyphBufferSize = 1024; | 41 static const int kGlyphBufferSize = 1024; |
42 | 42 |
43 enum RenderMode { | 43 enum RenderMode { |
44 /** | 44 /** |
45 * This is the render mode used by drawText(), which is mainly used by | 45 * This is the render mode used by drawText(), which is mainly used by |
46 * the Skia unit tests. It tries match the other text backends exactly, | 46 * the Skia unit tests. It tries match the other text backends exactly, |
47 * with the exception of not implementing LCD text, and doing anti- | 47 * with the exception of not implementing LCD text, and doing anti- |
48 * aliasing with the built-in MSAA. | 48 * aliasing with the built-in MSAA. |
49 */ | 49 */ |
50 kMaxAccuracy_RenderMode, | 50 kMaxAccuracy_RenderMode, |
51 | 51 |
52 /** | 52 /** |
53 * This is the render mode used by drawPosText(). It ignores hinting and | 53 * This is the render mode used by drawPosText(). It ignores hinting and |
54 * LCD text, even if the client provided positions for hinted glyphs, | 54 * LCD text, even if the client provided positions for hinted glyphs, |
55 * and renders from a canonically-sized, generic set of paths for the | 55 * and renders from a canonically-sized, generic set of paths for the |
56 * given typeface. In the future we should work out a system for the | 56 * given typeface. In the future we should work out a system for the |
57 * client to know it should not provide hinted glyph positions. This | 57 * client to know it should not provide hinted glyph positions. This |
58 * render mode also tries to use GPU stroking for fake bold, even when | 58 * render mode also tries to use GPU stroking for fake bold, even when |
59 * SK_USE_FREETYPE_EMBOLDEN is set. | 59 * SK_USE_FREETYPE_EMBOLDEN is set. |
60 */ | 60 */ |
61 kMaxPerformance_RenderMode, | 61 kMaxPerformance_RenderMode, |
62 }; | 62 }; |
63 | 63 |
64 void init(const GrPaint&, const SkPaint&, size_t textByteLength, | 64 void init(const GrPaint&, const SkPaint&, size_t textByteLength, |
65 RenderMode, SkScalar textTranslateY = 0); | 65 RenderMode, const SkPoint& textTranslate); |
66 void initGlyphs(SkGlyphCache* cache); | 66 void initGlyphs(SkGlyphCache* cache); |
67 void appendGlyph(uint16_t glyphID, float x); | 67 void appendGlyph(uint16_t glyphID, float x); |
68 void appendGlyph(uint16_t glyphID, float x, float y); | 68 void appendGlyph(uint16_t glyphID, float x, float y); |
69 void flush(); | 69 void flush(); |
70 void finish(); | 70 void finish(); |
71 | 71 |
72 GrDrawState::AutoRestoreEffects fStateRestore; | 72 GrDrawState::AutoRestoreEffects fStateRestore; |
73 SkScalar fTextRatio; | 73 SkScalar fTextRatio; |
74 float fTextInverseRatio; | 74 float fTextInverseRatio; |
75 SkGlyphCache* fGlyphCache; | 75 SkGlyphCache* fGlyphCache; |
76 GrPathRange* fGlyphs; | 76 GrPathRange* fGlyphs; |
77 uint32_t fIndexBuffer[kGlyphBufferSize]; | 77 uint32_t fIndexBuffer[kGlyphBufferSize]; |
78 float fTransformBuffer[2 * kGlyphBufferSize]; | 78 float fTransformBuffer[2 * kGlyphBufferSize]; |
79 GrDrawTarget::PathTransformType fTransformType; | 79 GrDrawTarget::PathTransformType fTransformType; |
80 int fPendingGlyphCount; | 80 int fPendingGlyphCount; |
81 SkMatrix fContextInitialMatrix; | 81 SkMatrix fContextInitialMatrix; |
82 bool fNeedsDeviceSpaceGlyphs; | 82 bool fNeedsDeviceSpaceGlyphs; |
83 }; | 83 }; |
84 | 84 |
85 #endif | 85 #endif |
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