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Side by Side Diff: src/image/SkSurface_Base.h

Issue 872543002: Take budgeted param when snapping new image. (Closed) Base URL: https://skia.googlesource.com/skia.git@budgeted
Patch Set: Address comment and rebase Created 5 years, 11 months ago
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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 14 matching lines...) Expand all
25 * scope. 25 * scope.
26 */ 26 */
27 virtual SkCanvas* onNewCanvas() = 0; 27 virtual SkCanvas* onNewCanvas() = 0;
28 28
29 virtual SkSurface* onNewSurface(const SkImageInfo&) = 0; 29 virtual SkSurface* onNewSurface(const SkImageInfo&) = 0;
30 30
31 /** 31 /**
32 * Allocate an SkImage that represents the current contents of the surface. 32 * Allocate an SkImage that represents the current contents of the surface.
33 * This needs to be able to outlive the surface itself (if need be), and 33 * This needs to be able to outlive the surface itself (if need be), and
34 * must faithfully represent the current contents, even if the surface 34 * must faithfully represent the current contents, even if the surface
35 * is chaged after this calle (e.g. it is drawn to via its canvas). 35 * is changed after this called (e.g. it is drawn to via its canvas).
36 */ 36 */
37 virtual SkImage* onNewImageSnapshot() = 0; 37 virtual SkImage* onNewImageSnapshot(Budgeted) = 0;
38 38
39 /** 39 /**
40 * Default implementation: 40 * Default implementation:
41 * 41 *
42 * image = this->newImageSnapshot(); 42 * image = this->newImageSnapshot();
43 * if (image) { 43 * if (image) {
44 * image->draw(canvas, ...); 44 * image->draw(canvas, ...);
45 * image->unref(); 45 * image->unref();
46 * } 46 * }
47 */ 47 */
48 virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*); 48 virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*);
49 49
50 /** 50 /**
51 * Called as a performance hint when the Surface is allowed to make it's con tents 51 * Called as a performance hint when the Surface is allowed to make it's con tents
52 * undefined. 52 * undefined.
53 */ 53 */
54 virtual void onDiscard() {} 54 virtual void onDiscard() {}
55 55
56 /** 56 /**
57 * If the surface is about to change, we call this so that our subclass 57 * If the surface is about to change, we call this so that our subclass
58 * can optionally fork their backend (copy-on-write) in case it was 58 * can optionally fork their backend (copy-on-write) in case it was
59 * being shared with the cachedImage. 59 * being shared with the cachedImage.
60 */ 60 */
61 virtual void onCopyOnWrite(ContentChangeMode) = 0; 61 virtual void onCopyOnWrite(ContentChangeMode) = 0;
62 62
63 inline SkCanvas* getCachedCanvas(); 63 inline SkCanvas* getCachedCanvas();
64 inline SkImage* getCachedImage(); 64 inline SkImage* getCachedImage(Budgeted);
65 65
66 // called by SkSurface to compute a new genID 66 // called by SkSurface to compute a new genID
67 uint32_t newGenerationID(); 67 uint32_t newGenerationID();
68 68
69 private: 69 private:
70 SkCanvas* fCachedCanvas; 70 SkCanvas* fCachedCanvas;
71 SkImage* fCachedImage; 71 SkImage* fCachedImage;
72 72
73 void aboutToDraw(ContentChangeMode mode); 73 void aboutToDraw(ContentChangeMode mode);
74 friend class SkCanvas; 74 friend class SkCanvas;
75 friend class SkSurface; 75 friend class SkSurface;
76 76
77 typedef SkSurface INHERITED; 77 typedef SkSurface INHERITED;
78 }; 78 };
79 79
80 SkCanvas* SkSurface_Base::getCachedCanvas() { 80 SkCanvas* SkSurface_Base::getCachedCanvas() {
81 if (NULL == fCachedCanvas) { 81 if (NULL == fCachedCanvas) {
82 fCachedCanvas = this->onNewCanvas(); 82 fCachedCanvas = this->onNewCanvas();
83 if (fCachedCanvas) { 83 if (fCachedCanvas) {
84 fCachedCanvas->setSurfaceBase(this); 84 fCachedCanvas->setSurfaceBase(this);
85 } 85 }
86 } 86 }
87 return fCachedCanvas; 87 return fCachedCanvas;
88 } 88 }
89 89
90 SkImage* SkSurface_Base::getCachedImage() { 90 SkImage* SkSurface_Base::getCachedImage(Budgeted budgeted) {
91 if (NULL == fCachedImage) { 91 if (NULL == fCachedImage) {
92 fCachedImage = this->onNewImageSnapshot(); 92 fCachedImage = this->onNewImageSnapshot(budgeted);
93 SkASSERT(!fCachedCanvas || fCachedCanvas->getSurfaceBase() == this); 93 SkASSERT(!fCachedCanvas || fCachedCanvas->getSurfaceBase() == this);
94 } 94 }
95 return fCachedImage; 95 return fCachedImage;
96 } 96 }
97 97
98 #endif 98 #endif
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