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| 1 /* | |
| 2 * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved. | |
| 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 25 */ | |
| 26 | |
| 27 #ifndef SKY_ENGINE_CORE_HTML_CANVAS_CANVASIMAGESOURCE_H_ | |
| 28 #define SKY_ENGINE_CORE_HTML_CANVAS_CANVASIMAGESOURCE_H_ | |
| 29 | |
| 30 #include "sky/engine/wtf/PassRefPtr.h" | |
| 31 | |
| 32 namespace blink { | |
| 33 | |
| 34 class Image; | |
| 35 | |
| 36 enum SourceImageMode { | |
| 37 CopySourceImageIfVolatile, | |
| 38 DontCopySourceImage | |
| 39 }; | |
| 40 | |
| 41 enum SourceImageStatus { | |
| 42 NormalSourceImageStatus, | |
| 43 ExternalSourceImageStatus, // Shared with another GPU context | |
| 44 UndecodableSourceImageStatus, // Image element with a 'broken' image | |
| 45 ZeroSizeCanvasSourceImageStatus, // Source is a canvas with width or heigh o
f zero | |
| 46 IncompleteSourceImageStatus, // Image element with no source media | |
| 47 InvalidSourceImageStatus, | |
| 48 }; | |
| 49 | |
| 50 class CanvasImageSource { | |
| 51 public: | |
| 52 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceIma
geStatus* = 0) const = 0; | |
| 53 | |
| 54 virtual bool isVideoElement() const { return false; } | |
| 55 | |
| 56 // Adjusts the source and destination rectangles for cases where the actual | |
| 57 // source image is a subregion of the image returned by getSourceImageForCan
vas. | |
| 58 virtual void adjustDrawRects(FloatRect* srcRect, FloatRect* dstRect) const {
} | |
| 59 | |
| 60 virtual FloatSize sourceSize() const = 0; | |
| 61 virtual FloatSize defaultDestinationSize() const { return sourceSize(); } | |
| 62 virtual const KURL& sourceURL() const { return blankURL(); } | |
| 63 | |
| 64 protected: | |
| 65 virtual ~CanvasImageSource() { } | |
| 66 }; | |
| 67 | |
| 68 } // namespace blink | |
| 69 | |
| 70 #endif // SKY_ENGINE_CORE_HTML_CANVAS_CANVASIMAGESOURCE_H_ | |
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