CSSCrossfadeValue.h [plain text]
#pragma once
#include "CachedImageClient.h"
#include "CachedResourceHandle.h"
#include "CSSImageGeneratorValue.h"
#include <wtf/Function.h>
namespace WebCore {
class CSSPrimitiveValue;
class CSSCrossfadeValue final : public CSSImageGeneratorValue {
public:
static Ref<CSSCrossfadeValue> create(Ref<CSSValue>&& fromValue, Ref<CSSValue>&& toValue, Ref<CSSPrimitiveValue>&& percentageValue, bool prefixed = false);
~CSSCrossfadeValue();
String customCSSText() const;
Image* image(RenderElement&, const FloatSize&);
bool isFixedSize() const { return true; }
FloatSize fixedSize(const RenderElement&);
bool isPrefixed() const { return m_isPrefixed; }
bool isPending() const;
bool knownToBeOpaque(const RenderElement&) const;
void loadSubimages(CachedResourceLoader&, const ResourceLoaderOptions&);
bool traverseSubresources(const WTF::Function<bool (const CachedResource&)>& handler) const;
RefPtr<CSSCrossfadeValue> blend(const CSSCrossfadeValue&, double) const;
bool equals(const CSSCrossfadeValue&) const;
bool equalInputImages(const CSSCrossfadeValue&) const;
private:
CSSCrossfadeValue(Ref<CSSValue>&& fromValue, Ref<CSSValue>&& toValue, Ref<CSSPrimitiveValue>&& percentageValue, bool prefixed);
class SubimageObserver final : public CachedImageClient {
public:
SubimageObserver(CSSCrossfadeValue&);
private:
void imageChanged(CachedImage*, const IntRect*) final;
CSSCrossfadeValue& m_owner;
};
void crossfadeChanged();
Ref<CSSValue> m_fromValue;
Ref<CSSValue> m_toValue;
Ref<CSSPrimitiveValue> m_percentageValue;
CachedResourceHandle<CachedImage> m_cachedFromImage;
CachedResourceHandle<CachedImage> m_cachedToImage;
RefPtr<Image> m_generatedImage;
SubimageObserver m_subimageObserver;
bool m_isPrefixed { false };
bool m_subimagesAreReady { false };
};
}
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSCrossfadeValue, isCrossfadeValue())