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/*
* Copyright (C) 2010 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. ``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 COMPUTER, INC. OR
* 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 StylePendingImage_h
#define StylePendingImage_h
#include "core/css/CSSCursorImageValue.h"
#include "core/css/CSSImageGeneratorValue.h"
#include "core/css/CSSImageSetValue.h"
#include "core/css/CSSImageValue.h"
#include "core/rendering/style/StyleImage.h"
#include "platform/graphics/Image.h"
namespace blink {
// StylePendingImage is a placeholder StyleImage that is entered into the RenderStyle during
// style resolution, in order to avoid loading images that are not referenced by the final style.
// They should never exist in a RenderStyle after it has been returned from the style selector.
class StylePendingImage final : public StyleImage {
public:
static PassRefPtr<StylePendingImage> create(CSSValue* value) { return adoptRef(new StylePendingImage(value)); }
virtual WrappedImagePtr data() const override { return m_value; }
virtual PassRefPtrWillBeRawPtr<CSSValue> cssValue() const override { return m_value; }
CSSImageValue* cssImageValue() const { return m_value->isImageValue() ? toCSSImageValue(m_value) : 0; }
CSSImageGeneratorValue* cssImageGeneratorValue() const { return m_value->isImageGeneratorValue() ? toCSSImageGeneratorValue(m_value) : 0; }
CSSCursorImageValue* cssCursorImageValue() const { return m_value->isCursorImageValue() ? toCSSCursorImageValue(m_value) : 0; }
CSSImageSetValue* cssImageSetValue() const { return m_value->isImageSetValue() ? toCSSImageSetValue(m_value) : 0; }
virtual LayoutSize imageSize(const RenderObject*, float /*multiplier*/) const override { return LayoutSize(); }
virtual bool imageHasRelativeWidth() const override { return false; }
virtual bool imageHasRelativeHeight() const override { return false; }
virtual void computeIntrinsicDimensions(const RenderObject*, Length& /* intrinsicWidth */ , Length& /* intrinsicHeight */, FloatSize& /* intrinsicRatio */) override { }
virtual bool usesImageContainerSize() const override { return false; }
virtual void setContainerSizeForRenderer(const RenderObject*, const IntSize&, float) override { }
virtual void addClient(RenderObject*) override { }
virtual void removeClient(RenderObject*) override { }
virtual PassRefPtr<Image> image(RenderObject*, const IntSize&) const override
{
ASSERT_NOT_REACHED();
return nullptr;
}
virtual bool knownToBeOpaque(const RenderObject*) const override { return false; }
private:
StylePendingImage(CSSValue* value)
: m_value(value)
{
m_isPendingImage = true;
}
CSSValue* m_value; // Not retained; it owns us.
};
DEFINE_STYLE_IMAGE_TYPE_CASTS(StylePendingImage, isPendingImage());
}
#endif
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