Remove CSS clients of ImageResource

sky/engine/core/rendering/style/StyleFetchedImageSet.h

-/*
- * 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 SKY_ENGINE_CORE_RENDERING_STYLE_STYLEFETCHEDIMAGESET_H_
-#define SKY_ENGINE_CORE_RENDERING_STYLE_STYLEFETCHEDIMAGESET_H_
-
-#include "sky/engine/core/fetch/ImageResourceClient.h"
-#include "sky/engine/core/fetch/ResourcePtr.h"
-#include "sky/engine/core/rendering/style/StyleImage.h"
-#include "sky/engine/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 {
-    WTF_MAKE_FAST_ALLOCATED;
-public:
-    static PassRefPtr<StyleFetchedImageSet> create(ImageResource* image, float imageScaleFactor, CSSImageSetValue* value)
-    {
-        return adoptRef(new StyleFetchedImageSet(image, imageScaleFactor, value));
-    }
-    virtual ~StyleFetchedImageSet();
-
-    virtual PassRefPtr<CSSValue> cssValue() 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.
-    virtual WrappedImagePtr data() const override { return m_bestFitImage.get(); }
-
-    void clearImageSetValue() { m_imageSetValue = 0; }
-
-    virtual bool canRender(const RenderObject&) const override;
-    virtual bool isLoaded() const override;
-    virtual bool errorOccurred() const override;
-    virtual LayoutSize imageSize(const RenderObject*) const override;
-    virtual bool imageHasRelativeWidth() const override;
-    virtual bool imageHasRelativeHeight() const override;
-    virtual void computeIntrinsicDimensions(const RenderObject*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) override;
-    virtual bool usesImageContainerSize() const override;
-    virtual void setContainerSizeForRenderer(const RenderObject*, const IntSize&) override;
-    virtual void addClient(RenderObject*) override;
-    virtual void removeClient(RenderObject*) override;
-    virtual PassRefPtr<Image> image(RenderObject*, const IntSize&) const override;
-    virtual float imageScaleFactor() const override { return m_imageScaleFactor; }
-    virtual bool knownToBeOpaque(const RenderObject*) const override;
-    virtual ImageResource* cachedImage() const override { return m_bestFitImage.get(); }
-
-private:
-    StyleFetchedImageSet(ImageResource*, float imageScaleFactor, CSSImageSetValue*);
-
-    ResourcePtr<ImageResource> m_bestFitImage;
-    float m_imageScaleFactor;
-
-    // FIXME: oilpan: Change to RawPtr when moving this class onto oilpan heap.
-    // Also add "if !ENABLE(OILPAN)" around clearImageSetValue above as well as around its
-    // caller since it should not be needed once both of the objects are on the heap and
-    // oilpan is enabled.
-    CSSImageSetValue* m_imageSetValue; // Not retained; it owns us.
-};
-
-DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleFetchedImageSet, isImageResourceSet());
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_RENDERING_STYLE_STYLEFETCHEDIMAGESET_H_