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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef StyleFetchedImageSet_h
#define StyleFetchedImageSet_h
#include "core/fetch/ImageResourceClient.h"
#include "core/style/StyleImage.h"
#include "platform/geometry/LayoutSize.h"
namespace blink {
class ImageResource;
class CSSImageSetValue;
// This class keeps one cached image and has access to a set of alternatives.
class StyleFetchedImageSet final : public StyleImage, private ImageResourceClient {
USING_FAST_MALLOC_WILL_BE_REMOVED(StyleFetchedImageSet);
WILL_BE_USING_PRE_FINALIZER(StyleFetchedImageSet, dispose);
public:
static PassRefPtrWillBeRawPtr<StyleFetchedImageSet> create(ImageResource* image, float imageScaleFactor, CSSImageSetValue* value, const KURL& url)
{
return adoptRefWillBeNoop(new StyleFetchedImageSet(image, imageScaleFactor, value, url));
}
~StyleFetchedImageSet() override;
PassRefPtrWillBeRawPtr<CSSValue> cssValue() const override;
PassRefPtrWillBeRawPtr<CSSValue> computedCSSValue() const override;
// FIXME: This is used by StyleImage for equals comparison, but this implementation
// only looks at the image from the set that we have loaded. I'm not sure if that is
// meaningful enough or not.
WrappedImagePtr data() const override;
#if !ENABLE(OILPAN)
void clearImageSetValue() { m_imageSetValue = nullptr; }
#endif
bool canRender() const override;
bool isLoaded() const override;
bool errorOccurred() const override;
LayoutSize imageSize(const LayoutObject&, float multiplier, const LayoutSize& defaultObjectSize) const override;
bool imageHasRelativeSize() const override;
bool usesImageContainerSize() const override;
void addClient(LayoutObject*) override;
void removeClient(LayoutObject*) override;
PassRefPtr<Image> image(const LayoutObject&, const IntSize&, float) const override;
float imageScaleFactor() const override { return m_imageScaleFactor; }
bool knownToBeOpaque(const LayoutObject&) const override;
ImageResource* cachedImage() const override;
DECLARE_VIRTUAL_TRACE();
private:
StyleFetchedImageSet(ImageResource*, float imageScaleFactor, CSSImageSetValue*, const KURL&);
void dispose();
String debugName() const override { return "StyleFetchedImageSet"; }
RefPtrWillBeMember<ImageResource> m_bestFitImage;
float m_imageScaleFactor;
RawPtrWillBeMember<CSSImageSetValue> m_imageSetValue; // Not retained; it owns us.
const KURL m_url;
};
DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleFetchedImageSet, isImageResourceSet());
} // namespace blink
#endif // StyleFetchedImageSet_h
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