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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 "GrGlyph.h" | 11 #include "GrGlyph.h" |
12 #include "GrPaint.h" | 12 #include "GrPaint.h" |
13 #include "SkDeviceProperties.h" | 13 #include "SkDeviceProperties.h" |
14 | 14 |
15 #include "SkPostConfig.h" | 15 #include "SkPostConfig.h" |
16 | 16 |
17 class GrContext; | 17 class GrContext; |
18 class GrDrawTarget; | 18 class GrDrawTarget; |
19 class GrFontScaler; | 19 class GrFontScaler; |
20 | 20 |
21 /* | 21 /* |
22 * This class wraps the state for a single text render | 22 * This class wraps the state for a single text render |
23 */ | 23 */ |
24 class GrTextContext { | 24 class GrTextContext { |
25 public: | 25 public: |
26 virtual ~GrTextContext(); | 26 virtual ~GrTextContext(); |
27 | 27 |
28 bool drawText(const GrPaint&, const SkPaint&, const char text[], size_t byte
Length, | 28 bool drawText(const GrPaint&, const SkPaint&, const SkMatrix& viewMatrix, co
nst char text[], |
29 SkScalar x, SkScalar y); | 29 size_t byteLength, SkScalar x, SkScalar y); |
30 bool drawPosText(const GrPaint&, const SkPaint&, | 30 bool drawPosText(const GrPaint&, const SkPaint&, const SkMatrix& viewMatrix, |
31 const char text[], size_t byteLength, | 31 const char text[], size_t byteLength, |
32 const SkScalar pos[], int scalarsPerPosition, | 32 const SkScalar pos[], int scalarsPerPosition, |
33 const SkPoint& offset); | 33 const SkPoint& offset); |
34 | 34 |
35 protected: | 35 protected: |
36 GrTextContext* fFallbackTextContext; | 36 GrTextContext* fFallbackTextContext; |
37 GrContext* fContext; | 37 GrContext* fContext; |
38 SkDeviceProperties fDeviceProperties; | 38 SkDeviceProperties fDeviceProperties; |
39 | 39 |
40 GrDrawTarget* fDrawTarget; | 40 GrDrawTarget* fDrawTarget; |
41 SkIRect fClipRect; | 41 SkIRect fClipRect; |
42 GrPaint fPaint; | 42 GrPaint fPaint; |
43 SkPaint fSkPaint; | 43 SkPaint fSkPaint; |
44 | 44 |
45 GrTextContext(GrContext*, const SkDeviceProperties&); | 45 GrTextContext(GrContext*, const SkDeviceProperties&); |
46 | 46 |
47 virtual bool canDraw(const SkPaint& paint) = 0; | 47 virtual bool canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) = 0; |
48 | 48 |
49 virtual void onDrawText(const GrPaint&, const SkPaint&, const char text[], s
ize_t byteLength, | 49 virtual void onDrawText(const GrPaint&, const SkPaint&, const SkMatrix& view
Matrix, |
50 SkScalar x, SkScalar y) = 0; | 50 const char text[], size_t byteLength, SkScalar x, Sk
Scalar y) = 0; |
51 virtual void onDrawPosText(const GrPaint&, const SkPaint&, | 51 virtual void onDrawPosText(const GrPaint&, const SkPaint&, const SkMatrix& v
iewMatrix, |
52 const char text[], size_t byteLength, | 52 const char text[], size_t byteLength, |
53 const SkScalar pos[], int scalarsPerPosition, | 53 const SkScalar pos[], int scalarsPerPosition, |
54 const SkPoint& offset) = 0; | 54 const SkPoint& offset) = 0; |
55 | 55 |
56 void init(const GrPaint&, const SkPaint&); | 56 void init(const GrPaint&, const SkPaint&); |
57 void finish() { fDrawTarget = NULL; } | 57 void finish() { fDrawTarget = NULL; } |
58 | 58 |
59 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); | 59 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); |
60 // sets extent in stopVector and returns glyph count | 60 // sets extent in stopVector and returns glyph count |
61 static int MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, | 61 static int MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, |
62 const char text[], size_t byteLength, SkVector* stopV
ector); | 62 const char text[], size_t byteLength, SkVector* stopV
ector); |
63 }; | 63 }; |
64 | 64 |
65 #endif | 65 #endif |
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