1 /* 2 * Copyright (c) 2006,2007,2008, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef BitmapImageSingleFrameSkia_h 32 #define BitmapImageSingleFrameSkia_h 33 34 #include "Image.h" 35 #include "NativeImageSkia.h" 36 37 namespace WebCore { 38 39 // This image class can be used in places which need an Image, but have 40 // raw pixel data rather than undecoded image data. 41 // The Image is simpler than a BitmapImage, as it does not have image 42 // observers, animation, multiple frames, or non-decoded data. 43 // Therefore trimming the decoded data (destroyDecodedData()) has no effect. 44 // 45 // The difficulty with putting this in BitmapImage::create(NativeImagePtr) 46 // is that NativeImagePtr = NativeImageSkia, yet callers have SkBitmap. 47 class BitmapImageSingleFrameSkia : public Image { 48 public: 49 // Creates a new Image from the given SkBitmap. If "copyPixels" is true, a 50 // deep copy is done. Otherwise, a shallow copy is done (pixel data is 51 // ref'ed). 52 static PassRefPtr<BitmapImageSingleFrameSkia> create(const SkBitmap&, bool copyPixels); 53 54 virtual bool isBitmapImage() const { return true; } 55 56 virtual IntSize size() const 57 { 58 return IntSize(m_nativeImage.width(), m_nativeImage.height()); 59 } 60 61 // Do nothing, as we only have the one representation of data (decoded). 62 virtual void destroyDecodedData(bool destroyAll = true) { } 63 64 virtual unsigned decodedSize() const 65 { 66 return m_nativeImage.decodedSize(); 67 } 68 69 // We only have a single frame. 70 virtual NativeImagePtr nativeImageForCurrentFrame() 71 { 72 return &m_nativeImage; 73 } 74 75 protected: 76 virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator); 77 78 private: 79 NativeImageSkia m_nativeImage; 80 81 // Creates a new Image from the given SkBitmap, using a shallow copy. 82 explicit BitmapImageSingleFrameSkia(const SkBitmap&); 83 }; 84 85 FloatRect normalizeRect(const FloatRect&); 86 87 } // namespace WebCore 88 89 #endif // BitmapImageSingleFrameSkia_h 90
