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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 GrTextStrike; | 13 class GrTextStrike; |
14 | 14 |
15 /* | 15 /* |
16 * This class implements GrTextContext using distance field fonts | 16 * This class implements GrTextContext using distance field fonts |
17 */ | 17 */ |
18 class GrDistanceFieldTextContext : public GrTextContext { | 18 class GrDistanceFieldTextContext : public GrTextContext { |
19 public: | 19 public: |
20 GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&); | 20 GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&, bool enabl
e); |
21 virtual ~GrDistanceFieldTextContext(); | 21 virtual ~GrDistanceFieldTextContext(); |
22 | 22 |
23 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz
e_t byteLength, | 23 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz
e_t byteLength, |
24 SkScalar x, SkScalar y) SK_OVERRIDE; | 24 SkScalar x, SkScalar y) SK_OVERRIDE; |
25 virtual void drawPosText(const GrPaint&, const SkPaint&, | 25 virtual void drawPosText(const GrPaint&, const SkPaint&, |
26 const char text[], size_t byteLength, | 26 const char text[], size_t byteLength, |
27 const SkScalar pos[], SkScalar constY, | 27 const SkScalar pos[], SkScalar constY, |
28 int scalarsPerPosition) SK_OVERRIDE; | 28 int scalarsPerPosition) SK_OVERRIDE; |
29 | 29 |
30 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; | 30 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; |
31 | 31 |
32 private: | 32 private: |
33 GrTextStrike* fStrike; | 33 GrTextStrike* fStrike; |
34 SkScalar fTextRatio; | 34 SkScalar fTextRatio; |
35 bool fUseLCDText; | 35 bool fUseLCDText; |
| 36 bool fEnableDFRendering; |
36 | 37 |
37 void init(const GrPaint&, const SkPaint&); | 38 void init(const GrPaint&, const SkPaint&); |
38 void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontSca
ler*); | 39 void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontSca
ler*); |
39 void flushGlyphs(); // automatically called by destructor | 40 void flushGlyphs(); // automatically called by destructor |
40 void finish(); | 41 void finish(); |
41 | 42 |
42 enum { | 43 enum { |
43 kMinRequestedGlyphs = 1, | 44 kMinRequestedGlyphs = 1, |
44 kDefaultRequestedGlyphs = 64, | 45 kDefaultRequestedGlyphs = 64, |
45 kMinRequestedVerts = kMinRequestedGlyphs * 4, | 46 kMinRequestedVerts = kMinRequestedGlyphs * 4, |
46 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, | 47 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, |
47 }; | 48 }; |
48 | 49 |
49 SkPoint* fVertices; | 50 SkPoint* fVertices; |
50 int32_t fMaxVertices; | 51 int32_t fMaxVertices; |
51 GrTexture* fCurrTexture; | 52 GrTexture* fCurrTexture; |
52 int fCurrVertex; | 53 int fCurrVertex; |
53 }; | 54 }; |
54 | 55 |
55 #endif | 56 #endif |
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