Source/core/html/HTMLCanvasElement.h - Issue 758493004: canvas: make a temporary buffer when a context doesn't exist.

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

Issue 758493004: canvas: make a temporary buffer when a context doesn't exist. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: buffer() creates noContextImageBuffer when no context Created 6 years ago

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« Source/core/css/CSSCanvasValue.cpp ('K') | « Source/core/frame/ImageBitmap.cpp ('k') | Source/core/html/HTMLCanvasElement.cpp » ('j') | Source/core/html/HTMLCanvasElement.cpp » ('J')

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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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202	202

203 bool m_originClean;	203 bool m_originClean;

204	204

205 // It prevents HTMLCanvasElement::buffer() from continuously re-attempting t o allocate an imageBuffer	205 // It prevents HTMLCanvasElement::buffer() from continuously re-attempting t o allocate an imageBuffer

206 // after the first attempt failed.	206 // after the first attempt failed.

207 mutable bool m_didFailToCreateImageBuffer;	207 mutable bool m_didFailToCreateImageBuffer;

208 bool m_imageBufferIsClear;	208 bool m_imageBufferIsClear;

209 OwnPtr<ImageBuffer> m_imageBuffer;	209 OwnPtr<ImageBuffer> m_imageBuffer;

210 mutable OwnPtr<GraphicsContextStateSaver> m_contextStateSaver;	210 mutable OwnPtr<GraphicsContextStateSaver> m_contextStateSaver;

211	211

	212 // temporary imageBuffer until a context is created.

	213 mutable OwnPtr<ImageBuffer> m_noContextImageBuffer;

212 mutable RefPtr<Image> m_copiedImage; // FIXME: This is temporary for platfor ms that have to copy the image buffer to render (and for CSSCanvasValue).	214 mutable RefPtr<Image> m_copiedImage; // FIXME: This is temporary for platfor ms that have to copy the image buffer to render (and for CSSCanvasValue).

213 };	215 };

214	216

215 } // namespace blink	217 } // namespace blink

216	218

217 #endif // HTMLCanvasElement_h	219 #endif // HTMLCanvasElement_h

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