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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 SkSurface_Base_DEFINED | 8 #ifndef SkSurface_Base_DEFINED |
| 9 #define SkSurface_Base_DEFINED | 9 #define SkSurface_Base_DEFINED |
| 10 | 10 |
| (...skipping 25 matching lines...) Expand all Loading... |
| 36 virtual SkCanvas* onNewCanvas() = 0; | 36 virtual SkCanvas* onNewCanvas() = 0; |
| 37 | 37 |
| 38 virtual SkSurface* onNewSurface(const SkImageInfo&) = 0; | 38 virtual SkSurface* onNewSurface(const SkImageInfo&) = 0; |
| 39 | 39 |
| 40 /** | 40 /** |
| 41 * Allocate an SkImage that represents the current contents of the surface. | 41 * Allocate an SkImage that represents the current contents of the surface. |
| 42 * This needs to be able to outlive the surface itself (if need be), and | 42 * This needs to be able to outlive the surface itself (if need be), and |
| 43 * must faithfully represent the current contents, even if the surface | 43 * must faithfully represent the current contents, even if the surface |
| 44 * is changed after this called (e.g. it is drawn to via its canvas). | 44 * is changed after this called (e.g. it is drawn to via its canvas). |
| 45 */ | 45 */ |
| 46 virtual SkImage* onNewImageSnapshot(SkBudgeted, ForceCopyMode) = 0; | 46 virtual SkImage* onNewImageSnapshot(Budgeted, ForceCopyMode) = 0; |
| 47 | 47 |
| 48 /** | 48 /** |
| 49 * Default implementation: | 49 * Default implementation: |
| 50 * | 50 * |
| 51 * image = this->newImageSnapshot(); | 51 * image = this->newImageSnapshot(); |
| 52 * if (image) { | 52 * if (image) { |
| 53 * image->draw(canvas, ...); | 53 * image->draw(canvas, ...); |
| 54 * image->unref(); | 54 * image->unref(); |
| 55 * } | 55 * } |
| 56 */ | 56 */ |
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| 74 * Called only when we _didn't_ copy-on-write; we assume the copies start m
utable. | 74 * Called only when we _didn't_ copy-on-write; we assume the copies start m
utable. |
| 75 */ | 75 */ |
| 76 virtual void onRestoreBackingMutability() {} | 76 virtual void onRestoreBackingMutability() {} |
| 77 | 77 |
| 78 /** | 78 /** |
| 79 * Issue any pending surface IO to the current backend 3D API and resolve an
y surface MSAA. | 79 * Issue any pending surface IO to the current backend 3D API and resolve an
y surface MSAA. |
| 80 */ | 80 */ |
| 81 virtual void onPrepareForExternalIO() {} | 81 virtual void onPrepareForExternalIO() {} |
| 82 | 82 |
| 83 inline SkCanvas* getCachedCanvas(); | 83 inline SkCanvas* getCachedCanvas(); |
| 84 inline SkImage* refCachedImage(SkBudgeted, ForceUnique); | 84 inline SkImage* refCachedImage(Budgeted, ForceUnique); |
| 85 | 85 |
| 86 bool hasCachedImage() const { return fCachedImage != nullptr; } | 86 bool hasCachedImage() const { return fCachedImage != nullptr; } |
| 87 | 87 |
| 88 // called by SkSurface to compute a new genID | 88 // called by SkSurface to compute a new genID |
| 89 uint32_t newGenerationID(); | 89 uint32_t newGenerationID(); |
| 90 | 90 |
| 91 private: | 91 private: |
| 92 SkCanvas* fCachedCanvas; | 92 SkCanvas* fCachedCanvas; |
| 93 SkImage* fCachedImage; | 93 SkImage* fCachedImage; |
| 94 | 94 |
| (...skipping 12 matching lines...) Expand all Loading... |
| 107 SkCanvas* SkSurface_Base::getCachedCanvas() { | 107 SkCanvas* SkSurface_Base::getCachedCanvas() { |
| 108 if (nullptr == fCachedCanvas) { | 108 if (nullptr == fCachedCanvas) { |
| 109 fCachedCanvas = this->onNewCanvas(); | 109 fCachedCanvas = this->onNewCanvas(); |
| 110 if (fCachedCanvas) { | 110 if (fCachedCanvas) { |
| 111 fCachedCanvas->setSurfaceBase(this); | 111 fCachedCanvas->setSurfaceBase(this); |
| 112 } | 112 } |
| 113 } | 113 } |
| 114 return fCachedCanvas; | 114 return fCachedCanvas; |
| 115 } | 115 } |
| 116 | 116 |
| 117 SkImage* SkSurface_Base::refCachedImage(SkBudgeted budgeted, ForceUnique unique)
{ | 117 SkImage* SkSurface_Base::refCachedImage(Budgeted budgeted, ForceUnique unique) { |
| 118 SkImage* snap = fCachedImage; | 118 SkImage* snap = fCachedImage; |
| 119 if (kYes_ForceUnique == unique && snap && !snap->unique()) { | 119 if (kYes_ForceUnique == unique && snap && !snap->unique()) { |
| 120 snap = nullptr; | 120 snap = nullptr; |
| 121 } | 121 } |
| 122 if (snap) { | 122 if (snap) { |
| 123 return SkRef(snap); | 123 return SkRef(snap); |
| 124 } | 124 } |
| 125 ForceCopyMode fcm = (kYes_ForceUnique == unique) ? kYes_ForceCopyMode : | 125 ForceCopyMode fcm = (kYes_ForceUnique == unique) ? kYes_ForceCopyMode : |
| 126 kNo_ForceCopyMode; | 126 kNo_ForceCopyMode; |
| 127 snap = this->onNewImageSnapshot(budgeted, fcm); | 127 snap = this->onNewImageSnapshot(budgeted, fcm); |
| 128 if (kNo_ForceUnique == unique) { | 128 if (kNo_ForceUnique == unique) { |
| 129 SkASSERT(!fCachedImage); | 129 SkASSERT(!fCachedImage); |
| 130 fCachedImage = SkSafeRef(snap); | 130 fCachedImage = SkSafeRef(snap); |
| 131 } | 131 } |
| 132 SkASSERT(!fCachedCanvas || fCachedCanvas->getSurfaceBase() == this); | 132 SkASSERT(!fCachedCanvas || fCachedCanvas->getSurfaceBase() == this); |
| 133 return snap; | 133 return snap; |
| 134 } | 134 } |
| 135 | 135 |
| 136 #endif | 136 #endif |
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