third_party/WebKit/Source/core/html/canvas/CanvasImageSource.h - Issue 2351363002: Make CSSStyleImageValue a member of CanvasImageSource.

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Issue 2351363002: Make CSSStyleImageValue a member of CanvasImageSource. (Closed)

Patch Set: added additional nullptr checks to getSourceImageForCanvas, changed toImageSourceInternal to includ… 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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47 class CORE_EXPORT CanvasImageSource {	47 class CORE_EXPORT CanvasImageSource {

48 public:	48 public:

49 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*, Accele rationHint, SnapshotReason, const FloatSize&) const = 0;	49 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*, Accele rationHint, SnapshotReason, const FloatSize&) const = 0;

50	50

51 // IMPORTANT: Result must be independent of whether destinationContext is	51 // IMPORTANT: Result must be independent of whether destinationContext is

52 // already tainted because this function may be used to determine whether	52 // already tainted because this function may be used to determine whether

53 // a CanvasPattern is "origin clean", and that pattern may be used on	53 // a CanvasPattern is "origin clean", and that pattern may be used on

54 // another canvas, which may not be already tainted.	54 // another canvas, which may not be already tainted.

55 virtual bool wouldTaintOrigin(SecurityOrigin* destinationSecurityOrigin) con st = 0;	55 virtual bool wouldTaintOrigin(SecurityOrigin* destinationSecurityOrigin) con st = 0;

56	56

	57 virtual bool isCSSImageValue() const { return false; }

57 virtual bool isVideoElement() const { return false; }	58 virtual bool isVideoElement() const { return false; }

58 virtual bool isCanvasElement() const { return false; }	59 virtual bool isCanvasElement() const { return false; }

59 virtual bool isSVGSource() const { return false; }	60 virtual bool isSVGSource() const { return false; }

60 virtual bool isImageBitmap() const { return false; }	61 virtual bool isImageBitmap() const { return false; }

61 virtual bool isOffscreenCanvas() const { return false; }	62 virtual bool isOffscreenCanvas() const { return false; }

62	63

63 // Adjusts the source and destination rectangles for cases where the actual	64 // Adjusts the source and destination rectangles for cases where the actual

64 // source image is a subregion of the image returned by getSourceImageForCan vas.	65 // source image is a subregion of the image returned by getSourceImageForCan vas.

65 virtual void adjustDrawRects(FloatRect* srcRect, FloatRect* dstRect) const { }	66 virtual void adjustDrawRects(FloatRect* srcRect, FloatRect* dstRect) const { }

66	67

67 virtual FloatSize elementSize(const FloatSize& defaultObjectSize) const = 0;	68 virtual FloatSize elementSize(const FloatSize& defaultObjectSize) const = 0;

68 virtual FloatSize defaultDestinationSize(const FloatSize& defaultObjectSize) const { return elementSize(defaultObjectSize); }	69 virtual FloatSize defaultDestinationSize(const FloatSize& defaultObjectSize) const { return elementSize(defaultObjectSize); }

69 virtual const KURL& sourceURL() const { return blankURL(); }	70 virtual const KURL& sourceURL() const { return blankURL(); }

70 virtual bool isOpaque() const { return false; }	71 virtual bool isOpaque() const { return false; }

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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