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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 SkDeferredCanvas_DEFINED | 8 #ifndef SkDeferredCanvas_DEFINED |
9 #define SkDeferredCanvas_DEFINED | 9 #define SkDeferredCanvas_DEFINED |
10 | 10 |
11 #include "SkCanvas.h" | 11 #include "SkCanvas.h" |
12 #include "SkPixelRef.h" | 12 #include "SkPixelRef.h" |
13 | 13 |
14 class DeferredDevice; | 14 class DeferredDevice; |
15 class SkImage; | 15 class SkImage; |
16 class SkSurface; | 16 class SkSurface; |
17 | 17 |
18 #if !defined(SK_DEFERRED_CANVAS_USES_FACTORIES) | |
19 // This is temporary, for rolling the API change into Chromium/Blink | |
20 #define SK_DEFERRED_CANVAS_USES_FACTORIES 0 | |
21 #endif | |
22 | |
18 /** \class SkDeferredCanvas | 23 /** \class SkDeferredCanvas |
19 Subclass of SkCanvas that encapsulates an SkPicture or SkGPipe for deferred | 24 Subclass of SkCanvas that encapsulates an SkPicture or SkGPipe for deferred |
20 drawing. The main difference between this class and SkPictureRecord (the | 25 drawing. The main difference between this class and SkPictureRecord (the |
21 canvas provided by SkPicture) is that this is a full drop-in replacement | 26 canvas provided by SkPicture) is that this is a full drop-in replacement |
22 for SkCanvas, while SkPictureRecord only supports draw operations. | 27 for SkCanvas, while SkPictureRecord only supports draw operations. |
23 SkDeferredCanvas will transparently trigger the flushing of deferred | 28 SkDeferredCanvas will transparently trigger the flushing of deferred |
24 draw operations when an attempt is made to access the pixel data. | 29 draw operations when an attempt is made to access the pixel data. |
25 */ | 30 */ |
26 class SK_API SkDeferredCanvas : public SkCanvas { | 31 class SK_API SkDeferredCanvas : public SkCanvas { |
27 public: | 32 public: |
28 class NotificationClient; | 33 class NotificationClient; |
29 | 34 |
35 #if SK_DEFERRED_CANVAS_USES_FACTORIES | |
reed1
2013/05/28 12:55:18
Why do we need to ever hide the new methods?
| |
36 /** Construct a canvas with the specified device to draw into. | |
37 @param device Specifies a device for the canvas to draw into. | |
38 */ | |
39 static SkDeferredCanvas* create(SkDevice* device); | |
reed1
2013/05/28 12:55:18
Static methods are Capitalized.
reed1
2013/05/28 12:55:18
Do we really need to expose a version that takes a
Justin Novosad
2013/05/28 14:05:30
It would require a whole lot of work in our test p
| |
40 | |
41 /** Construct a canvas with the specified surface to draw into. | |
42 This factory must be used for newImageSnapshot to work. | |
43 @param surface Specifies a surface for the canvas to draw into. | |
44 */ | |
45 static SkDeferredCanvas* create(SkSurface* surface); | |
46 #else | |
47 /** DEPRECATED | |
48 */ | |
30 SkDeferredCanvas(); | 49 SkDeferredCanvas(); |
31 | 50 |
32 /** Construct a canvas with the specified device to draw into. | 51 /** DEPRACATED, use create instead |
52 Construct a canvas with the specified device to draw into. | |
33 Equivalent to calling default constructor, then setDevice. | 53 Equivalent to calling default constructor, then setDevice. |
34 @param device Specifies a device for the canvas to draw into. | 54 @param device Specifies a device for the canvas to draw into. |
35 */ | 55 */ |
36 explicit SkDeferredCanvas(SkDevice* device); | 56 explicit SkDeferredCanvas(SkDevice* device); |
37 | 57 |
38 /** Construct a canvas with the specified surface to draw into. | 58 /** DEPRECATED, use create instead |
59 Construct a canvas with the specified surface to draw into. | |
39 This constructor must be used for newImageSnapshot to work. | 60 This constructor must be used for newImageSnapshot to work. |
40 @param surface Specifies a surface for the canvas to draw into. | 61 @param surface Specifies a surface for the canvas to draw into. |
41 */ | 62 */ |
42 explicit SkDeferredCanvas(SkSurface* surface); | 63 explicit SkDeferredCanvas(SkSurface* surface); |
64 #endif | |
43 | 65 |
44 virtual ~SkDeferredCanvas(); | 66 virtual ~SkDeferredCanvas(); |
45 | 67 |
46 /** | 68 /** DEPRECATED |
47 * Specify a device to be used by this canvas. Calling setDevice will | 69 * Specify a device to be used by this canvas. Calling setDevice will |
48 * release the previously set device, if any. Takes a reference on the | 70 * release the previously set device, if any. Takes a reference on the |
49 * device. | 71 * device. |
50 * | 72 * |
51 * @param device The device that the canvas will raw into | 73 * @param device The device that the canvas will raw into |
52 * @return The device argument, for convenience. | 74 * @return The device argument, for convenience. |
53 */ | 75 */ |
54 virtual SkDevice* setDevice(SkDevice* device); | 76 virtual SkDevice* setDevice(SkDevice* device); |
55 | 77 |
56 /** | 78 /** |
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247 * or completely overwritten by the command currently being recorded. | 269 * or completely overwritten by the command currently being recorded. |
248 */ | 270 */ |
249 virtual void skippedPendingDrawCommands() {} | 271 virtual void skippedPendingDrawCommands() {} |
250 }; | 272 }; |
251 | 273 |
252 protected: | 274 protected: |
253 virtual SkCanvas* canvasForDrawIter(); | 275 virtual SkCanvas* canvasForDrawIter(); |
254 DeferredDevice* getDeferredDevice() const; | 276 DeferredDevice* getDeferredDevice() const; |
255 | 277 |
256 private: | 278 private: |
279 #if SK_DEFERRED_CANVAS_USES_FACTORIES | |
280 SkDeferredCanvas(DeferredDevice*); | |
281 #endif | |
282 | |
257 void recordedDrawCommand(); | 283 void recordedDrawCommand(); |
258 SkCanvas* drawingCanvas() const; | 284 SkCanvas* drawingCanvas() const; |
259 SkCanvas* immediateCanvas() const; | 285 SkCanvas* immediateCanvas() const; |
260 bool isFullFrame(const SkRect*, const SkPaint*) const; | 286 bool isFullFrame(const SkRect*, const SkPaint*) const; |
261 void validate() const; | 287 void validate() const; |
262 void init(); | 288 void init(); |
263 bool fDeferredDrawing; | 289 bool fDeferredDrawing; |
264 | 290 |
265 friend class SkDeferredCanvasTester; // for unit testing | 291 friend class SkDeferredCanvasTester; // for unit testing |
266 typedef SkCanvas INHERITED; | 292 typedef SkCanvas INHERITED; |
267 }; | 293 }; |
268 | 294 |
269 | 295 |
270 #endif | 296 #endif |
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