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CSSFilterImageValue.h
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119 lines (93 loc) · 4.11 KB
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/*
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
* Copyright (C) 2021 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 "CSSImageGeneratorValue.h"
#include "CachedImageClient.h"
#include "CachedResourceHandle.h"
#include "FilterOperations.h"
#include "Image.h"
#include <wtf/Function.h>
namespace WebCore {
class FilterSubimageObserverProxy;
class RenderElement;
namespace Style {
class BuilderState;
}
class CSSFilterImageValue final : public CSSImageGeneratorValue {
friend class FilterSubimageObserverProxy;
public:
static Ref<CSSFilterImageValue> create(Ref<CSSValue>&& imageValue, Ref<CSSValue>&& filterValue)
{
return adoptRef(*new CSSFilterImageValue(WTFMove(imageValue), WTFMove(filterValue)));
}
~CSSFilterImageValue();
String customCSSText() const;
RefPtr<Image> image(RenderElement&, const FloatSize&);
bool isFixedSize() const { return true; }
FloatSize fixedSize(const RenderElement&);
bool isPending() const;
bool knownToBeOpaque(const RenderElement&) const;
void loadSubimages(CachedResourceLoader&, const ResourceLoaderOptions&);
bool traverseSubresources(const WTF::Function<bool (const CachedResource&)>& handler) const;
bool equals(const CSSFilterImageValue&) const;
bool equalInputImages(const CSSFilterImageValue&) const;
const FilterOperations& filterOperations() const { return m_filterOperations; }
void setFilterOperations(const FilterOperations& filterOperations) { m_filterOperations = filterOperations; }
CachedImage* cachedImage() const { return m_cachedImage.get(); }
Ref<CSSFilterImageValue> valueWithStylesResolved(Style::BuilderState&);
private:
CSSFilterImageValue(Ref<CSSValue>&& imageValue, Ref<CSSValue>&& filterValue)
: CSSImageGeneratorValue(FilterImageClass)
, m_imageValue(WTFMove(imageValue))
, m_filterValue(WTFMove(filterValue))
, m_filterSubimageObserver(this)
{
}
class FilterSubimageObserverProxy final : public CachedImageClient {
public:
FilterSubimageObserverProxy(CSSFilterImageValue* ownerValue)
: m_ownerValue(ownerValue)
, m_ready(false)
{
}
virtual ~FilterSubimageObserverProxy() = default;
void imageChanged(CachedImage*, const IntRect* = nullptr) final;
void setReady(bool ready) { m_ready = ready; }
private:
CSSFilterImageValue* m_ownerValue;
bool m_ready;
};
void filterImageChanged(const IntRect&);
void createFilterOperations(Style::BuilderState&);
Ref<CSSValue> m_imageValue;
Ref<CSSValue> m_filterValue;
FilterOperations m_filterOperations;
CachedResourceHandle<CachedImage> m_cachedImage;
FilterSubimageObserverProxy m_filterSubimageObserver;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSFilterImageValue, isFilterImageValue())