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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 "CSSGradientValue.h"
#include "StyleColor.h"
#include "StyleGeneratedImage.h"
#include <variant>
namespace WebCore {
struct StyleGradientImageStop {
std::optional<StyleColor> color;
RefPtr<CSSPrimitiveValue> position;
};
class StyleGradientImage final : public StyleGeneratedImage {
public:
using Stop = StyleGradientImageStop;
struct LinearData {
CSSLinearGradientValue::Data data;
CSSGradientRepeat repeating;
};
struct PrefixedLinearData {
CSSPrefixedLinearGradientValue::Data data;
CSSGradientRepeat repeating;
};
struct DeprecatedLinearData {
CSSDeprecatedLinearGradientValue::Data data;
};
struct RadialData {
CSSRadialGradientValue::Data data;
CSSGradientRepeat repeating;
};
struct PrefixedRadialData {
CSSPrefixedRadialGradientValue::Data data;
CSSGradientRepeat repeating;
};
struct DeprecatedRadialData {
CSSDeprecatedRadialGradientValue::Data data;
};
struct ConicData {
CSSConicGradientValue::Data data;
CSSGradientRepeat repeating;
};
using Data = std::variant<LinearData, DeprecatedLinearData, PrefixedLinearData, RadialData, DeprecatedRadialData, PrefixedRadialData, ConicData>;
static Ref<StyleGradientImage> create(Data data, CSSGradientColorInterpolationMethod colorInterpolationMethod, Vector<StyleGradientImageStop> stops)
{
return adoptRef(*new StyleGradientImage(WTFMove(data), colorInterpolationMethod, WTFMove(stops)));
}
virtual ~StyleGradientImage();
bool operator==(const StyleImage&) const final;
bool equals(const StyleGradientImage&) const;
static constexpr bool isFixedSize = false;
private:
explicit StyleGradientImage(Data&&, CSSGradientColorInterpolationMethod, Vector<StyleGradientImageStop>&&);
Ref<CSSValue> computedStyleValue(const RenderStyle&) const final;
bool isPending() const final;
void load(CachedResourceLoader&, const ResourceLoaderOptions&) final;
RefPtr<Image> image(const RenderElement*, const FloatSize&) const final;
bool knownToBeOpaque(const RenderElement&) const final;
FloatSize fixedSize(const RenderElement&) const final;
void didAddClient(RenderElement&) final { }
void didRemoveClient(RenderElement&) final { }
Ref<Gradient> createGradient(const LinearData&, const RenderElement&, const FloatSize&) const;
Ref<Gradient> createGradient(const PrefixedLinearData&, const RenderElement&, const FloatSize&) const;
Ref<Gradient> createGradient(const DeprecatedLinearData&, const RenderElement&, const FloatSize&) const;
Ref<Gradient> createGradient(const RadialData&, const RenderElement&, const FloatSize&) const;
Ref<Gradient> createGradient(const PrefixedRadialData&, const RenderElement&, const FloatSize&) const;
Ref<Gradient> createGradient(const DeprecatedRadialData&, const RenderElement&, const FloatSize&) const;
Ref<Gradient> createGradient(const ConicData&, const RenderElement&, const FloatSize&) const;
template<typename GradientAdapter> GradientColorStops computeStops(GradientAdapter&, const CSSToLengthConversionData&, const RenderStyle&, float maxLengthForRepeat, CSSGradientRepeat) const;
template<typename GradientAdapter> GradientColorStops computeStopsForDeprecatedVariants(GradientAdapter&, const CSSToLengthConversionData&, const RenderStyle&) const;
Data m_data;
CSSGradientColorInterpolationMethod m_colorInterpolationMethod;
Vector<StyleGradientImageStop> m_stops;
bool m_knownCacheableBarringFilter { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_STYLE_IMAGE(StyleGradientImage, isGradientImage)
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