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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 GrCoordTransform_DEFINED | 8 #ifndef GrCoordTransform_DEFINED |
| 9 #define GrCoordTransform_DEFINED | 9 #define GrCoordTransform_DEFINED |
| 10 | 10 |
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| 56 * framework should internally do a y reversal to account for it being upsid
e down by Skia's | 56 * framework should internally do a y reversal to account for it being upsid
e down by Skia's |
| 57 * coord convention. | 57 * coord convention. |
| 58 */ | 58 */ |
| 59 GrCoordTransform(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture
* texture = NULL) { | 59 GrCoordTransform(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture
* texture = NULL) { |
| 60 SkDEBUGCODE(fInEffect = false); | 60 SkDEBUGCODE(fInEffect = false); |
| 61 this->reset(sourceCoords, m, texture); | 61 this->reset(sourceCoords, m, texture); |
| 62 } | 62 } |
| 63 | 63 |
| 64 void reset(GrCoordSet sourceCoords, const GrTexture* texture) { | 64 void reset(GrCoordSet sourceCoords, const GrTexture* texture) { |
| 65 SkASSERT(!fInEffect); | 65 SkASSERT(!fInEffect); |
| 66 SkASSERT(NULL != texture); | 66 SkASSERT(texture); |
| 67 this->reset(sourceCoords, MakeDivByTextureWHMatrix(texture), texture); | 67 this->reset(sourceCoords, MakeDivByTextureWHMatrix(texture), texture); |
| 68 } | 68 } |
| 69 | 69 |
| 70 void reset(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture* text
ure = NULL) { | 70 void reset(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture* text
ure = NULL) { |
| 71 SkASSERT(!fInEffect); | 71 SkASSERT(!fInEffect); |
| 72 fSourceCoords = sourceCoords; | 72 fSourceCoords = sourceCoords; |
| 73 fMatrix = m; | 73 fMatrix = m; |
| 74 fReverseY = NULL != texture && kBottomLeft_GrSurfaceOrigin == texture->o
rigin(); | 74 fReverseY = texture && kBottomLeft_GrSurfaceOrigin == texture->origin(); |
| 75 } | 75 } |
| 76 | 76 |
| 77 GrCoordTransform& operator= (const GrCoordTransform& other) { | 77 GrCoordTransform& operator= (const GrCoordTransform& other) { |
| 78 SkASSERT(!fInEffect); | 78 SkASSERT(!fInEffect); |
| 79 fSourceCoords = other.fSourceCoords; | 79 fSourceCoords = other.fSourceCoords; |
| 80 fMatrix = other.fMatrix; | 80 fMatrix = other.fMatrix; |
| 81 fReverseY = other.fReverseY; | 81 fReverseY = other.fReverseY; |
| 82 return *this; | 82 return *this; |
| 83 } | 83 } |
| 84 | 84 |
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| 97 fReverseY == other.fReverseY; | 97 fReverseY == other.fReverseY; |
| 98 } | 98 } |
| 99 | 99 |
| 100 GrCoordSet sourceCoords() const { return fSourceCoords; } | 100 GrCoordSet sourceCoords() const { return fSourceCoords; } |
| 101 const SkMatrix& getMatrix() const { return fMatrix; } | 101 const SkMatrix& getMatrix() const { return fMatrix; } |
| 102 bool reverseY() const { return fReverseY; } | 102 bool reverseY() const { return fReverseY; } |
| 103 | 103 |
| 104 /** Useful for effects that want to insert a texture matrix that is implied
by the texture | 104 /** Useful for effects that want to insert a texture matrix that is implied
by the texture |
| 105 dimensions */ | 105 dimensions */ |
| 106 static inline SkMatrix MakeDivByTextureWHMatrix(const GrTexture* texture) { | 106 static inline SkMatrix MakeDivByTextureWHMatrix(const GrTexture* texture) { |
| 107 SkASSERT(NULL != texture); | 107 SkASSERT(texture); |
| 108 SkMatrix mat; | 108 SkMatrix mat; |
| 109 mat.setIDiv(texture->width(), texture->height()); | 109 mat.setIDiv(texture->width(), texture->height()); |
| 110 return mat; | 110 return mat; |
| 111 } | 111 } |
| 112 | 112 |
| 113 private: | 113 private: |
| 114 GrCoordSet fSourceCoords; | 114 GrCoordSet fSourceCoords; |
| 115 SkMatrix fMatrix; | 115 SkMatrix fMatrix; |
| 116 bool fReverseY; | 116 bool fReverseY; |
| 117 | 117 |
| 118 typedef SkNoncopyable INHERITED; | 118 typedef SkNoncopyable INHERITED; |
| 119 | 119 |
| 120 #ifdef SK_DEBUG | 120 #ifdef SK_DEBUG |
| 121 public: | 121 public: |
| 122 void setInEffect() const { fInEffect = true; } | 122 void setInEffect() const { fInEffect = true; } |
| 123 private: | 123 private: |
| 124 mutable bool fInEffect; | 124 mutable bool fInEffect; |
| 125 #endif | 125 #endif |
| 126 }; | 126 }; |
| 127 | 127 |
| 128 #endif | 128 #endif |
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