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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 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 GrTextContext_DEFINED | 8 #ifndef GrTextContext_DEFINED |
9 #define GrTextContext_DEFINED | 9 #define GrTextContext_DEFINED |
10 | 10 |
11 #include "GrClip.h" | 11 #include "GrClip.h" |
12 #include "GrGlyph.h" | 12 #include "GrGlyph.h" |
13 #include "GrPaint.h" | 13 #include "GrPaint.h" |
14 #include "SkDeviceProperties.h" | 14 #include "SkDeviceProperties.h" |
15 | 15 |
16 #include "SkPostConfig.h" | 16 #include "SkPostConfig.h" |
17 | 17 |
18 class GrClip; | |
19 class GrContext; | 18 class GrContext; |
20 class GrDrawTarget; | 19 class GrDrawTarget; |
21 class GrFontScaler; | 20 class GrFontScaler; |
22 | 21 |
23 /* | 22 /* |
24 * This class wraps the state for a single text render | 23 * This class wraps the state for a single text render |
25 */ | 24 */ |
26 class GrTextContext { | 25 class GrTextContext { |
27 public: | 26 public: |
28 virtual ~GrTextContext(); | 27 virtual ~GrTextContext(); |
29 | 28 |
30 bool drawText(GrRenderTarget* rt, const GrClip&, const GrPaint&, const SkPa
int&, | 29 bool drawText(GrRenderTarget* rt, const GrPaint&, const SkPaint&, const SkMa
trix& viewMatrix, |
31 const SkMatrix& viewMatrix, const char text[], size_t byteLeng
th, SkScalar x, | 30 const char text[], size_t byteLength, SkScalar x, SkScalar y); |
32 SkScalar y); | 31 bool drawPosText(GrRenderTarget* rt, const GrPaint&, const SkPaint&, const S
kMatrix& viewMatrix, |
33 bool drawPosText(GrRenderTarget* rt, const GrClip&, const GrPaint&, const Sk
Paint&, | |
34 const SkMatrix& viewMatrix, | |
35 const char text[], size_t byteLength, | 32 const char text[], size_t byteLength, |
36 const SkScalar pos[], int scalarsPerPosition, | 33 const SkScalar pos[], int scalarsPerPosition, |
37 const SkPoint& offset); | 34 const SkPoint& offset); |
38 | 35 |
39 protected: | 36 protected: |
40 GrTextContext* fFallbackTextContext; | 37 GrTextContext* fFallbackTextContext; |
41 GrContext* fContext; | 38 GrContext* fContext; |
42 SkDeviceProperties fDeviceProperties; | 39 SkDeviceProperties fDeviceProperties; |
43 | 40 |
44 SkAutoTUnref<GrRenderTarget> fRenderTarget; | 41 SkAutoTUnref<GrRenderTarget> fRenderTarget; |
45 GrClip fClip; | 42 const GrClip* fClip; |
46 GrDrawTarget* fDrawTarget; | 43 GrDrawTarget* fDrawTarget; |
47 SkIRect fClipRect; | 44 SkIRect fClipRect; |
48 GrPaint fPaint; | 45 GrPaint fPaint; |
49 SkPaint fSkPaint; | 46 SkPaint fSkPaint; |
50 | 47 |
51 GrTextContext(GrContext*, const SkDeviceProperties&); | 48 GrTextContext(GrContext*, const SkDeviceProperties&); |
52 | 49 |
53 virtual bool canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) = 0; | 50 virtual bool canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) = 0; |
54 | 51 |
55 virtual void onDrawText(GrRenderTarget*, const GrClip&, const GrPaint&, cons
t SkPaint&, | 52 virtual void onDrawText(GrRenderTarget*, const GrPaint&, const SkPaint&, |
56 const SkMatrix& viewMatrix, const char text[], size_
t byteLength, | 53 const SkMatrix& viewMatrix, const char text[], size_
t byteLength, |
57 SkScalar x, SkScalar y) = 0; | 54 SkScalar x, SkScalar y) = 0; |
58 virtual void onDrawPosText(GrRenderTarget*, const GrClip&, const GrPaint&, c
onst SkPaint&, | 55 virtual void onDrawPosText(GrRenderTarget*, const GrPaint&, const SkPaint&, |
59 const SkMatrix& viewMatrix, | 56 const SkMatrix& viewMatrix, |
60 const char text[], size_t byteLength, | 57 const char text[], size_t byteLength, |
61 const SkScalar pos[], int scalarsPerPosition, | 58 const SkScalar pos[], int scalarsPerPosition, |
62 const SkPoint& offset) = 0; | 59 const SkPoint& offset) = 0; |
63 | 60 |
64 void init(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&); | 61 void init(GrRenderTarget*, const GrPaint&, const SkPaint&); |
65 void finish() { fDrawTarget = NULL; } | 62 void finish() { fDrawTarget = NULL; } |
66 | 63 |
67 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); | 64 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); |
68 // sets extent in stopVector and returns glyph count | 65 // sets extent in stopVector and returns glyph count |
69 static int MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, | 66 static int MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, |
70 const char text[], size_t byteLength, SkVector* stopV
ector); | 67 const char text[], size_t byteLength, SkVector* stopV
ector); |
71 }; | 68 }; |
72 | 69 |
73 #endif | 70 #endif |
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