1/* 2 * Copyright (C) 2008, 2012, 2013 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef GradientImage_h 27#define GradientImage_h 28 29#include "FloatSize.h" 30#include "GeneratedImage.h" 31#include "Gradient.h" 32#include "Image.h" 33#include <wtf/RefPtr.h> 34 35namespace WebCore { 36 37class ImageBuffer; 38 39class GradientImage final : public GeneratedImage { 40public: 41 static PassRefPtr<GradientImage> create(PassRefPtr<Gradient> generator, const FloatSize& size) 42 { 43 return adoptRef(new GradientImage(generator, size)); 44 } 45 46 virtual ~GradientImage(); 47 48protected: 49 virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator, BlendMode, ImageOrientationDescription) override; 50 virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform, 51 const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator, const FloatRect& destRect, BlendMode) override; 52 53 GradientImage(PassRefPtr<Gradient>, const FloatSize&); 54 55private: 56 RefPtr<Gradient> m_gradient; 57 std::unique_ptr<ImageBuffer> m_cachedImageBuffer; 58 FloatSize m_cachedAdjustedSize; 59 unsigned m_cachedGeneratorHash; 60}; 61 62} 63 64#endif 65