third_party/WebKit/Source/core/html/canvas/CanvasImageSource.h - Issue 2362363002: Cancel GPU acceleration for 2D canvas when drawing very large images

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

Issue 2362363002: Cancel GPU acceleration for 2D canvas when drawing very large images (Closed)

Patch Set: fix sqrt Created 4 years, 2 months ago

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1 /*	1 /*

2 * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved.	2 * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved.

3 * Copyright (C) 2007 Alp Toker <alp@atoker.com>	3 * Copyright (C) 2007 Alp Toker <alp@atoker.com>

4 *	4 *

5 * Redistribution and use in source and binary forms, with or without	5 * Redistribution and use in source and binary forms, with or without

6 * modification, are permitted provided that the following conditions	6 * modification, are permitted provided that the following conditions

7 * are met:	7 * are met:

8 * 1. Redistributions of source code must retain the above copyright	8 * 1. Redistributions of source code must retain the above copyright

9 * notice, this list of conditions and the following disclaimer.	9 * notice, this list of conditions and the following disclaimer.

10 * 2. Redistributions in binary form must reproduce the above copyright	10 * 2. Redistributions in binary form must reproduce the above copyright

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61 virtual bool isOffscreenCanvas() const { return false; }	61 virtual bool isOffscreenCanvas() const { return false; }

62	62

63 // Adjusts the source and destination rectangles for cases where the actual	63 // Adjusts the source and destination rectangles for cases where the actual

64 // source image is a subregion of the image returned by getSourceImageForCan vas.	64 // source image is a subregion of the image returned by getSourceImageForCan vas.

65 virtual void adjustDrawRects(FloatRect* srcRect, FloatRect* dstRect) const { }	65 virtual void adjustDrawRects(FloatRect* srcRect, FloatRect* dstRect) const { }

66	66

67 virtual FloatSize elementSize(const FloatSize& defaultObjectSize) const = 0;	67 virtual FloatSize elementSize(const FloatSize& defaultObjectSize) const = 0;

68 virtual FloatSize defaultDestinationSize(const FloatSize& defaultObjectSize) const { return elementSize(defaultObjectSize); }	68 virtual FloatSize defaultDestinationSize(const FloatSize& defaultObjectSize) const { return elementSize(defaultObjectSize); }

69 virtual const KURL& sourceURL() const { return blankURL(); }	69 virtual const KURL& sourceURL() const { return blankURL(); }

70 virtual bool isOpaque() const { return false; }	70 virtual bool isOpaque() const { return false; }

	71 virtual bool isAccelerated() const = 0;

71	72

72 virtual int sourceWidth() = 0;	73 virtual int sourceWidth() = 0;

73 virtual int sourceHeight() = 0;	74 virtual int sourceHeight() = 0;

74	75

75 protected:	76 protected:

76 virtual ~CanvasImageSource() { }	77 virtual ~CanvasImageSource() { }

77 };	78 };

78	79

79 } // namespace blink	80 } // namespace blink

80	81

81 #endif	82 #endif

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