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26 #ifndef CSSImageSetValue_h
27 #define CSSImageSetValue_h
29 #include "core/css/CSSValueList.h"
30 #include "core/fetch/ResourceFetcher.h"
34 class ResourceFetcher;
35 class StyleFetchedImageSet;
38 class CSSImageSetValue : public CSSValueList {
41 static PassRefPtr<CSSImageSetValue> create()
43 return adoptRef(new CSSImageSetValue());
47 StyleFetchedImageSet* cachedImageSet(ResourceFetcher*, float deviceScaleFactor, const ResourceLoaderOptions&);
48 StyleFetchedImageSet* cachedImageSet(ResourceFetcher*, float deviceScaleFactor);
50 // Returns a StyleFetchedImageSet if the best fit image has been cached already, otherwise a StylePendingImage.
51 StyleImage* cachedOrPendingImageSet(float);
53 String customCSSText() const;
55 bool isPending() const { return !m_accessedBestFitImage; }
57 struct ImageWithScale {
62 bool hasFailedOrCanceledSubresources() const;
64 PassRefPtr<CSSImageSetValue> cloneForCSSOM() const;
67 ImageWithScale bestImageForScaleFactor();
71 explicit CSSImageSetValue(const CSSImageSetValue& cloneFrom);
74 static inline bool compareByScaleFactor(ImageWithScale first, ImageWithScale second) { return first.scaleFactor < second.scaleFactor; }
76 RefPtr<StyleImage> m_imageSet;
77 bool m_accessedBestFitImage;
79 // This represents the scale factor that we used to find the best fit image. It does not necessarily
80 // correspond to the scale factor of the best fit image.
83 Vector<ImageWithScale> m_imagesInSet;
86 DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageSetValue, isImageSetValue());
88 } // namespace WebCore
90 #endif // CSSImageSetValue_h