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26 #ifndef StyleFetchedImageSet_h
27 #define StyleFetchedImageSet_h
29 #include "core/fetch/ImageResourceClient.h"
30 #include "core/fetch/ResourcePtr.h"
31 #include "core/rendering/style/StyleImage.h"
32 #include "platform/geometry/LayoutSize.h"
37 class CSSImageSetValue;
39 // This class keeps one cached image and has access to a set of alternatives.
41 class StyleFetchedImageSet final : public StyleImage, private ImageResourceClient {
42 WTF_MAKE_FAST_ALLOCATED;
44 static PassRefPtr<StyleFetchedImageSet> create(ImageResource* image, float imageScaleFactor, CSSImageSetValue* value)
46 return adoptRef(new StyleFetchedImageSet(image, imageScaleFactor, value));
48 virtual ~StyleFetchedImageSet();
50 virtual PassRefPtrWillBeRawPtr<CSSValue> cssValue() const override;
52 // FIXME: This is used by StyleImage for equals comparison, but this implementation
53 // only looks at the image from the set that we have loaded. I'm not sure if that is
54 // meaningful enough or not.
55 virtual WrappedImagePtr data() const override { return m_bestFitImage.get(); }
57 void clearImageSetValue() { m_imageSetValue = 0; }
59 virtual bool canRender(const RenderObject&, float multiplier) const override;
60 virtual bool isLoaded() const override;
61 virtual bool errorOccurred() const override;
62 virtual LayoutSize imageSize(const RenderObject*, float multiplier) const override;
63 virtual bool imageHasRelativeWidth() const override;
64 virtual bool imageHasRelativeHeight() const override;
65 virtual void computeIntrinsicDimensions(const RenderObject*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) override;
66 virtual bool usesImageContainerSize() const override;
67 virtual void setContainerSizeForRenderer(const RenderObject*, const IntSize&, float) override;
68 virtual void addClient(RenderObject*) override;
69 virtual void removeClient(RenderObject*) override;
70 virtual PassRefPtr<Image> image(RenderObject*, const IntSize&) const override;
71 virtual float imageScaleFactor() const override { return m_imageScaleFactor; }
72 virtual bool knownToBeOpaque(const RenderObject*) const override;
73 virtual ImageResource* cachedImage() const override { return m_bestFitImage.get(); }
76 StyleFetchedImageSet(ImageResource*, float imageScaleFactor, CSSImageSetValue*);
78 ResourcePtr<ImageResource> m_bestFitImage;
79 float m_imageScaleFactor;
81 // FIXME: oilpan: Change to RawPtrWillBeMember when moving this class onto oilpan heap.
82 // Also add "if !ENABLE(OILPAN)" around clearImageSetValue above as well as around its
83 // caller since it should not be needed once both of the objects are on the heap and
85 CSSImageSetValue* m_imageSetValue; // Not retained; it owns us.
88 DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleFetchedImageSet, isImageResourceSet());
92 #endif // StyleFetchedImageSet_h