1/* 2 * Copyright (C) 2008, 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 GeneratedImage_h 27#define GeneratedImage_h 28 29#include "FloatSize.h" 30#include "Image.h" 31 32#include <wtf/RefPtr.h> 33 34namespace WebCore { 35 36class GeneratedImage : public Image { 37public: 38 virtual bool hasSingleSecurityOrigin() const override { return true; } 39 40 virtual void setContainerSize(const FloatSize& size) override { m_size = size; } 41 virtual bool usesContainerSize() const override { return true; } 42 virtual bool hasRelativeWidth() const override { return true; } 43 virtual bool hasRelativeHeight() const override { return true; } 44 virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) override; 45 46 virtual FloatSize size() const override { return m_size; } 47 48 // Assume that generated content has no decoded data we need to worry about 49 virtual void destroyDecodedData(bool /*destroyAll*/ = true) override { } 50 51protected: 52 virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator, BlendMode, ImageOrientationDescription) override = 0; 53 virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform, 54 const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator, const FloatRect& destRect, BlendMode) override = 0; 55 56 // FIXME: Implement this to be less conservative. 57 virtual bool currentFrameKnownToBeOpaque() override { return false; } 58 59 GeneratedImage() { } 60 61private: 62 FloatSize m_size; 63}; 64 65} 66 67#endif 68