1/* 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) 4 * (C) 2000 Dirk Mueller (mueller@kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24#ifndef StyleImage_h 25#define StyleImage_h 26 27#include "CSSValue.h" 28#include "Image.h" 29#include "IntSize.h" 30#include "LayoutSize.h" 31#include <wtf/PassRefPtr.h> 32#include <wtf/RefCounted.h> 33#include <wtf/RefPtr.h> 34 35namespace WebCore { 36 37class CachedImage; 38class CSSValue; 39class RenderObject; 40 41typedef void* WrappedImagePtr; 42 43class StyleImage : public RefCounted<StyleImage> { 44public: 45 virtual ~StyleImage() { } 46 47 bool operator==(const StyleImage& other) const 48 { 49 return data() == other.data(); 50 } 51 52 virtual PassRefPtr<CSSValue> cssValue() const = 0; 53 54 virtual bool canRender(const RenderObject*, float /*multiplier*/) const { return true; } 55 virtual bool isLoaded() const { return true; } 56 virtual bool errorOccurred() const { return false; } 57 virtual LayoutSize imageSize(const RenderObject*, float multiplier) const = 0; 58 virtual void computeIntrinsicDimensions(const RenderObject*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) = 0; 59 virtual bool imageHasRelativeWidth() const = 0; 60 virtual bool imageHasRelativeHeight() const = 0; 61 virtual bool usesImageContainerSize() const = 0; 62 virtual void setContainerSizeForRenderer(const RenderObject*, const IntSize&, float) = 0; 63 virtual void addClient(RenderObject*) = 0; 64 virtual void removeClient(RenderObject*) = 0; 65 virtual PassRefPtr<Image> image(RenderObject*, const IntSize&) const = 0; 66 virtual WrappedImagePtr data() const = 0; 67 virtual float imageScaleFactor() const { return 1; } 68 virtual bool knownToBeOpaque(const RenderObject*) const = 0; 69 virtual CachedImage* cachedImage() const { return 0; } 70 71 ALWAYS_INLINE bool isCachedImage() const { return m_isCachedImage; } 72 ALWAYS_INLINE bool isPendingImage() const { return m_isPendingImage; } 73 ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; } 74 ALWAYS_INLINE bool isCachedImageSet() const { return m_isCachedImageSet; } 75 76 static bool imagesEquivalent(StyleImage* image1, StyleImage* image2) 77 { 78 if (image1 != image2) { 79 if (!image1 || !image2) 80 return false; 81 return *image1 == *image2; 82 } 83 return true; 84 } 85 86protected: 87 StyleImage() 88 : m_isCachedImage(false) 89 , m_isPendingImage(false) 90 , m_isGeneratedImage(false) 91 , m_isCachedImageSet(false) 92 { 93 } 94 bool m_isCachedImage:1; 95 bool m_isPendingImage:1; 96 bool m_isGeneratedImage:1; 97 bool m_isCachedImageSet:1; 98}; 99 100} 101#endif 102