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/*
* Copyright (C) 2022 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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.
*/
#pragma once
#include "CachedImageClient.h"
#include "CachedResourceHandle.h"
#include "StyleGeneratedImage.h"
namespace WebCore {
struct BlendingContext;
class StyleCrossfadeImage final : public StyleGeneratedImage, private CachedImageClient {
WTF_MAKE_FAST_ALLOCATED;
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(StyleCrossfadeImage);
public:
static Ref<StyleCrossfadeImage> create(RefPtr<StyleImage> from, RefPtr<StyleImage> to, double percentage, bool isPrefixed)
{
return adoptRef(*new StyleCrossfadeImage(WTFMove(from), WTFMove(to), percentage, isPrefixed));
}
virtual ~StyleCrossfadeImage();
RefPtr<StyleCrossfadeImage> blend(const StyleCrossfadeImage&, const BlendingContext&) const;
bool operator==(const StyleImage&) const final;
bool equals(const StyleCrossfadeImage&) const;
bool equalInputImages(const StyleCrossfadeImage&) const;
static constexpr bool isFixedSize = true;
private:
explicit StyleCrossfadeImage(RefPtr<StyleImage>&&, RefPtr<StyleImage>&&, double, bool);
Ref<CSSValue> computedStyleValue(const RenderStyle&) const final;
bool isPending() const final;
void load(CachedResourceLoader&, const ResourceLoaderOptions&) final;
RefPtr<Image> image(const RenderElement*, const FloatSize&, bool isForFirstLine) const final;
bool knownToBeOpaque(const RenderElement&) const final;
FloatSize fixedSize(const RenderElement&) const final;
void didAddClient(RenderElement&) final { }
void didRemoveClient(RenderElement&) final { }
// CachedImageClient.
void imageChanged(CachedImage*, const IntRect*) final;
RefPtr<StyleImage> m_from;
RefPtr<StyleImage> m_to;
double m_percentage;
bool m_isPrefixed;
// FIXME: Rather than caching and tracking the input image via CachedImages, we should
// instead use a new, StyleImage specific notification, to allow correct tracking of
// nested images (e.g. one of the input images for a StyleCrossfadeImage is a StyleFilterImage
// where its input image is a StyleCachedImage).
CachedResourceHandle<CachedImage> m_cachedFromImage;
CachedResourceHandle<CachedImage> m_cachedToImage;
bool m_inputImagesAreReady;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_STYLE_IMAGE(StyleCrossfadeImage, isCrossfadeImage)
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