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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef PaintRenderingContext2D_h | |
6 #define PaintRenderingContext2D_h | |
7 | |
8 #include "bindings/core/v8/ScriptWrappable.h" | |
9 #include "modules/ModulesExport.h" | |
10 #include "modules/canvas2d/BaseRenderingContext2D.h" | |
11 #include "third_party/skia/include/core/SkCanvas.h" | |
12 | |
13 namespace blink { | |
14 | |
15 class CanvasImageSource; | |
16 class Color; | |
17 class ImageBuffer; | |
18 | |
19 class MODULES_EXPORT PaintRenderingContext2D : public BaseRenderingContext2D, pu blic NoBaseWillBeGarbageCollectedFinalized<PaintRenderingContext2D>, public Scri ptWrappable { | |
20 DEFINE_WRAPPERTYPEINFO(); | |
21 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PaintRenderingContext2D); | |
22 WTF_MAKE_NONCOPYABLE(PaintRenderingContext2D); | |
23 USING_FAST_MALLOC_WILL_BE_REMOVED(PaintRenderingContext2D); | |
24 public: | |
25 PassOwnPtrWillBeRawPtr<PaintRenderingContext2D> create(PassOwnPtr<ImageBuffe r> imageBuffer) | |
26 { | |
27 return adoptPtrWillBeNoop(new PaintRenderingContext2D(imageBuffer)); | |
28 } | |
29 | |
30 // BaseRenderingContext2D | |
31 | |
32 // PaintRenderingContext2D doesn't have any pixel readback so the origin | |
33 // is always clean, and unable to taint it. | |
34 bool originClean() const final { return true; } | |
Justin Novosad
2016/03/17 18:46:10
could put ASSERT_NOT_REACHED() here and in wouldTa
ikilpatrick
2016/03/17 19:15:41
It's actually used a bunch of times inside of Base
| |
35 void setOriginTainted() final { } | |
36 bool wouldTaintOrigin(CanvasImageSource*) final { return false; } | |
37 | |
38 int width() const final; | |
39 int height() const final; | |
40 | |
41 bool hasImageBuffer() const final { return m_imageBuffer; } | |
42 ImageBuffer* imageBuffer() const final { return m_imageBuffer.get(); } | |
43 | |
44 bool parseColorOrCurrentColor(Color&, const String& colorString) const final ; | |
45 | |
46 SkCanvas* drawingCanvas() const final; | |
47 SkCanvas* existingDrawingCanvas() const final; | |
48 void disableDeferral(DisableDeferralReason) final { } | |
49 | |
50 AffineTransform baseTransform() const final; | |
51 | |
52 void didDraw(const SkIRect& dirtyRect) final; | |
53 | |
54 // TODO(ikilpatrick): We'll need to either only accept resolved filters | |
55 // from a typed-om <filter> object, or use the appropriate style resolution | |
56 // host to determine 'em' units etc in filters. At the moment just pretend | |
Justin Novosad
2016/03/17 18:46:10
You could just specify built-in defaults
ikilpatrick
2016/03/17 19:15:42
Sorry, I fall off quickly when it comes to filters
| |
57 // that we don't have a filter set. | |
58 bool stateHasFilter() final { return false; } | |
59 SkImageFilter* stateGetFilter() final { return nullptr; } | |
60 | |
61 void validateStateStack() final; | |
62 | |
63 bool hasAlpha() const final { return true; } | |
64 | |
65 // PaintRenderingContext2D cannot lose it's context. | |
66 bool isContextLost() const final { return false; } | |
67 | |
68 private: | |
69 explicit PaintRenderingContext2D(PassOwnPtr<ImageBuffer>); | |
70 | |
71 OwnPtr<ImageBuffer> m_imageBuffer; | |
72 }; | |
73 | |
74 } // namespace blink | |
75 | |
76 #endif // PaintRenderingContext2D_h | |
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