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Side by Side Diff: src/gpu/GrDistanceFieldTextContext.h

Issue 582963002: Solo gp (Closed) Base URL: https://skia.googlesource.com/skia.git@no_peb
Patch Set: rebase Created 6 years, 3 months ago
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1 /* 1 /*
2 * Copyright 2013 Google Inc. 2 * Copyright 2013 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 GrDistanceFieldTextContext_DEFINED 8 #ifndef GrDistanceFieldTextContext_DEFINED
9 #define GrDistanceFieldTextContext_DEFINED 9 #define GrDistanceFieldTextContext_DEFINED
10 10
11 #include "GrTextContext.h" 11 #include "GrTextContext.h"
12 12
13 class GrGeometryProcessor;
13 class GrTextStrike; 14 class GrTextStrike;
14 15
15 /* 16 /*
16 * This class implements GrTextContext using distance field fonts 17 * This class implements GrTextContext using distance field fonts
17 */ 18 */
18 class GrDistanceFieldTextContext : public GrTextContext { 19 class GrDistanceFieldTextContext : public GrTextContext {
19 public: 20 public:
20 GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&, bool enabl e); 21 GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&, bool enabl e);
21 virtual ~GrDistanceFieldTextContext(); 22 virtual ~GrDistanceFieldTextContext();
22 23
23 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz e_t byteLength, 24 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz e_t byteLength,
24 SkScalar x, SkScalar y) SK_OVERRIDE; 25 SkScalar x, SkScalar y) SK_OVERRIDE;
25 virtual void drawPosText(const GrPaint&, const SkPaint&, 26 virtual void drawPosText(const GrPaint&, const SkPaint&,
26 const char text[], size_t byteLength, 27 const char text[], size_t byteLength,
27 const SkScalar pos[], SkScalar constY, 28 const SkScalar pos[], SkScalar constY,
28 int scalarsPerPosition) SK_OVERRIDE; 29 int scalarsPerPosition) SK_OVERRIDE;
29 30
30 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; 31 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
31 32
32 private: 33 private:
33 GrTextStrike* fStrike; 34 GrTextStrike* fStrike;
34 SkScalar fTextRatio; 35 SkScalar fTextRatio;
35 bool fUseLCDText; 36 bool fUseLCDText;
36 bool fEnableDFRendering; 37 bool fEnableDFRendering;
37 SkAutoTUnref<GrEffect> fCachedEffect; 38 SkAutoTUnref<GrGeometryProcessor> fCachedGeometryProcessor;
38 // Used to check whether fCachedEffect is still valid. 39 // Used to check whether fCachedEffect is still valid.
39 uint32_t fEffectTextureUniqueID; 40 uint32_t fEffectTextureUniqueID;
40 SkColor fEffectColor; 41 SkColor fEffectColor;
41 uint32_t fEffectFlags; 42 uint32_t fEffectFlags;
42 GrTexture* fGammaTexture; 43 GrTexture* fGammaTexture;
43 44
44 void init(const GrPaint&, const SkPaint&); 45 void init(const GrPaint&, const SkPaint&);
45 void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontSca ler*); 46 void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontSca ler*);
46 void flushGlyphs(); // automatically called by destructor 47 void flushGlyphs(); // automatically called by destructor
47 void setupCoverageEffect(const SkColor& filteredColor); 48 void setupCoverageEffect(const SkColor& filteredColor);
48 void finish(); 49 void finish();
49 50
50 enum { 51 enum {
51 kMinRequestedGlyphs = 1, 52 kMinRequestedGlyphs = 1,
52 kDefaultRequestedGlyphs = 64, 53 kDefaultRequestedGlyphs = 64,
53 kMinRequestedVerts = kMinRequestedGlyphs * 4, 54 kMinRequestedVerts = kMinRequestedGlyphs * 4,
54 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, 55 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4,
55 }; 56 };
56 57
57 void* fVertices; 58 void* fVertices;
58 int32_t fMaxVertices; 59 int32_t fMaxVertices;
59 GrTexture* fCurrTexture; 60 GrTexture* fCurrTexture;
60 int fCurrVertex; 61 int fCurrVertex;
61 SkRect fVertexBounds; 62 SkRect fVertexBounds;
62 }; 63 };
63 64
64 #endif 65 #endif
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