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1 /* | |
2 * Copyright (C) 2009 Apple Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions | |
6 * are met: | |
7 * 1. Redistributions of source code must retain the above copyright | |
8 * notice, this list of conditions and the following disclaimer. | |
9 * 2. Redistributions in binary form must reproduce the above copyright | |
10 * notice, this list of conditions and the following disclaimer in the | |
11 * documentation and/or other materials provided with the distribution. | |
12 * | |
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
24 */ | |
25 | |
26 #ifndef SKY_ENGINE_CORE_HTML_CANVAS_CANVASRENDERINGCONTEXT_H_ | |
27 #define SKY_ENGINE_CORE_HTML_CANVAS_CANVASRENDERINGCONTEXT_H_ | |
28 | |
29 #include "sky/engine/core/html/HTMLCanvasElement.h" | |
30 #include "sky/engine/platform/heap/Handle.h" | |
31 #include "sky/engine/wtf/HashSet.h" | |
32 #include "sky/engine/wtf/Noncopyable.h" | |
33 #include "sky/engine/wtf/text/StringHash.h" | |
34 | |
35 namespace blink { class WebLayer; } | |
36 | |
37 namespace blink { | |
38 | |
39 class CanvasImageSource; | |
40 class HTMLCanvasElement; | |
41 class KURL; | |
42 class WebGLObject; | |
43 | |
44 class CanvasRenderingContext { | |
45 WTF_MAKE_NONCOPYABLE(CanvasRenderingContext); | |
46 WTF_MAKE_FAST_ALLOCATED; | |
47 public: | |
48 virtual ~CanvasRenderingContext() { } | |
49 | |
50 #if !ENABLE(OILPAN) | |
51 void ref() { m_canvas->ref(); } | |
52 void deref() { m_canvas->deref(); } | |
53 #endif | |
54 | |
55 HTMLCanvasElement* canvas() const { return m_canvas; } | |
56 | |
57 virtual bool is2d() const { return false; } | |
58 virtual bool is3d() const { return false; } | |
59 virtual bool isAccelerated() const { return false; } | |
60 virtual bool hasAlpha() const { return true; } | |
61 virtual void setIsHidden(bool) = 0; | |
62 | |
63 virtual void paintRenderingResultsToCanvas() {} | |
64 | |
65 virtual blink::WebLayer* platformLayer() const { return 0; } | |
66 | |
67 protected: | |
68 CanvasRenderingContext(HTMLCanvasElement*); | |
69 | |
70 private: | |
71 RawPtr<HTMLCanvasElement> m_canvas; | |
72 HashSet<String> m_cleanURLs; | |
73 HashSet<String> m_dirtyURLs; | |
74 }; | |
75 | |
76 } // namespace blink | |
77 | |
78 #endif // SKY_ENGINE_CORE_HTML_CANVAS_CANVASRENDERINGCONTEXT_H_ | |
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