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Side by Side Diff: third_party/WebKit/Source/core/html/HTMLCanvasElement.h

Issue 2323933004: Disallow users modify canvas after it transfers control to offscreen (Closed)
Patch Set: Rebase Created 4 years, 3 months ago
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1 /* 1 /*
2 * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved. 2 * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com>
4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. 4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
5 * 5 *
6 * Redistribution and use in source and binary forms, with or without 6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions 7 * modification, are permitted provided that the following conditions
8 * are met: 8 * are met:
9 * 1. Redistributions of source code must retain the above copyright 9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer. 10 * notice, this list of conditions and the following disclaimer.
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81 81
82 DECLARE_NODE_FACTORY(HTMLCanvasElement); 82 DECLARE_NODE_FACTORY(HTMLCanvasElement);
83 ~HTMLCanvasElement() override; 83 ~HTMLCanvasElement() override;
84 84
85 // Attributes and functions exposed to script 85 // Attributes and functions exposed to script
86 int width() const { return size().width(); } 86 int width() const { return size().width(); }
87 int height() const { return size().height(); } 87 int height() const { return size().height(); }
88 88
89 const IntSize& size() const { return m_size; } 89 const IntSize& size() const { return m_size; }
90 90
91 void setWidth(int); 91 void setWidth(int, ExceptionState&);
92 void setHeight(int); 92 void setHeight(int, ExceptionState&);
93 93
94 void setSize(const IntSize& newSize) 94 void setSize(const IntSize& newSize);
95 {
96 if (newSize == size())
97 return;
98 m_ignoreReset = true;
99 setWidth(newSize.width());
100 setHeight(newSize.height());
101 m_ignoreReset = false;
102 reset();
103 }
104 95
105 // Called by Document::getCSSCanvasContext as well as above getContext(). 96 // Called by Document::getCSSCanvasContext as well as above getContext().
106 CanvasRenderingContext* getCanvasRenderingContext(const String&, const Canva sContextCreationAttributes&); 97 CanvasRenderingContext* getCanvasRenderingContext(const String&, const Canva sContextCreationAttributes&);
107 98
108 bool isPaintable() const; 99 bool isPaintable() const;
109 100
110 enum EncodeReason { 101 enum EncodeReason {
111 EncodeReasonToDataURL = 0, 102 EncodeReasonToDataURL = 0,
112 EncodeReasonToBlobCallback = 1, 103 EncodeReasonToBlobCallback = 1,
113 NumberOfEncodeReasons 104 NumberOfEncodeReasons
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269 // Used for OffscreenCanvas that controls this HTML canvas element 260 // Used for OffscreenCanvas that controls this HTML canvas element
270 std::unique_ptr<CanvasSurfaceLayerBridge> m_surfaceLayerBridge; 261 std::unique_ptr<CanvasSurfaceLayerBridge> m_surfaceLayerBridge;
271 262
272 int m_numFramesSinceLastRenderingModeSwitch; 263 int m_numFramesSinceLastRenderingModeSwitch;
273 bool m_pendingRenderingModeSwitch; 264 bool m_pendingRenderingModeSwitch;
274 }; 265 };
275 266
276 } // namespace blink 267 } // namespace blink
277 268
278 #endif // HTMLCanvasElement_h 269 #endif // HTMLCanvasElement_h
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