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/*
* Copyright (C) 2022-2023 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 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.
*/
#pragma once
#include "Color.h"
#include "Gradient.h"
#include "Pattern.h"
#include "SourceBrushLogicalGradient.h"
namespace WebCore {
class SourceBrush {
public:
using OptionalPatternGradient = std::variant<std::monostate, SourceBrushLogicalGradient, Ref<Pattern>>;
SourceBrush() = default;
WEBCORE_EXPORT SourceBrush(const Color&, OptionalPatternGradient&& = std::monostate { });
const Color& color() const { return m_color; }
void setColor(const Color color) { m_color = color; }
const OptionalPatternGradient& patternGradient() const { return m_patternGradient; }
WEBCORE_EXPORT Gradient* gradient() const;
WEBCORE_EXPORT Pattern* pattern() const;
RefPtr<Pattern> protectedPattern() const { return pattern(); }
WEBCORE_EXPORT const AffineTransform& gradientSpaceTransform() const;
WEBCORE_EXPORT std::optional<RenderingResourceIdentifier> gradientIdentifier() const;
WEBCORE_EXPORT void setGradient(Ref<Gradient>&&, const AffineTransform& spaceTransform = { });
void setPattern(Ref<Pattern>&&);
bool isInlineColor() const { return !hasPatternOrGradient() && m_color.tryGetAsSRGBABytes(); }
bool isVisible() const { return hasPatternOrGradient() || m_color.isVisible(); }
bool hasPatternOrGradient() const { return !std::holds_alternative<std::monostate>(m_patternGradient); }
friend bool operator==(const SourceBrush&, const SourceBrush&);
private:
Color m_color { Color::black };
OptionalPatternGradient m_patternGradient;
};
inline bool operator==(const SourceBrush& a, const SourceBrush& b)
{
// Workaround for Ref<> lack of operator==.
auto patternGradientEqual = [](const SourceBrush::OptionalPatternGradient& a, const SourceBrush::OptionalPatternGradient& b) -> bool {
if (a.index() != b.index())
return false;
if (auto* aGradient = std::get_if<SourceBrushLogicalGradient>(&a))
return *aGradient == std::get<SourceBrushLogicalGradient>(b);
if (auto* aPattern = std::get_if<Ref<Pattern>>(&a))
return aPattern->ptr() == std::get<Ref<Pattern>>(b).ptr();
return true;
};
return a.m_color == b.m_color && patternGradientEqual(a.m_patternGradient, b.m_patternGradient);
}
WTF::TextStream& operator<<(WTF::TextStream&, const SourceBrush&);
} // namespace WebCore
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