1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) 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 "core/css/CSSValue.h" 28 #include "platform/geometry/IntSize.h" 29 #include "platform/geometry/LayoutSize.h" 30 #include "platform/graphics/Image.h" 31 #include "wtf/PassRefPtr.h" 32 #include "wtf/RefCounted.h" 33 #include "wtf/RefPtr.h" 34 35 namespace blink { 36 37 class ImageResource; 38 class CSSValue; 39 class RenderObject; 40 41 typedef void* WrappedImagePtr; 42 43 class StyleImage : public RefCounted<StyleImage> { 44 public: 45 virtual ~StyleImage() { } 46 47 bool operator==(const StyleImage& other) const 48 { 49 return data() == other.data(); 50 } 51 52 virtual PassRefPtrWillBeRawPtr<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 ImageResource* cachedImage() const { return 0; } 70 71 ALWAYS_INLINE bool isImageResource() const { return m_isImageResource; } 72 ALWAYS_INLINE bool isPendingImage() const { return m_isPendingImage; } 73 ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; } 74 ALWAYS_INLINE bool isImageResourceSet() const { return m_isImageResourceSet; } 75 76 protected: 77 StyleImage() 78 : m_isImageResource(false) 79 , m_isPendingImage(false) 80 , m_isGeneratedImage(false) 81 , m_isImageResourceSet(false) 82 { 83 } 84 bool m_isImageResource:1; 85 bool m_isPendingImage:1; 86 bool m_isGeneratedImage:1; 87 bool m_isImageResourceSet:1; 88 }; 89 90 #define DEFINE_STYLE_IMAGE_TYPE_CASTS(thisType, function) \ 91 DEFINE_TYPE_CASTS(thisType, StyleImage, styleImage, styleImage->function, styleImage.function); \ 92 inline thisType* to##thisType(const RefPtr<StyleImage>& styleImage) { return to##thisType(styleImage.get()); } \ 93 typedef int NeedsSemiColonAfterDefineStyleImageTypeCasts 94 95 } 96 #endif 97
