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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 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 "FloatSize.h"
#include <wtf/Vector.h>
namespace WTF {
class TextStream;
}
namespace WebCore {
// Legacy shadow blur radius is used for canvas, and -webkit-box-shadow.
// It has different treatment of radii > 8px.
enum class ShadowRadiusMode : bool {
Default,
Legacy
};
struct GraphicsDropShadow {
FloatSize offset;
float radius;
Color color;
ShadowRadiusMode radiusMode { ShadowRadiusMode::Default };
float opacity { 1 };
bool isVisible() const { return color.isVisible(); }
bool isBlurred() const { return isVisible() && radius; }
bool hasOutsets() const { return isBlurred() || (isVisible() && !offset.isZero()); }
};
inline bool operator==(const GraphicsDropShadow& a, const GraphicsDropShadow& b)
{
return a.offset == b.offset && a.radius == b.radius && a.color == b.color;
}
struct GraphicsGaussianBlur {
FloatSize radius;
friend bool operator==(const GraphicsGaussianBlur&, const GraphicsGaussianBlur&) = default;
};
struct GraphicsColorMatrix {
std::array<float, 20> values;
friend bool operator==(const GraphicsColorMatrix&, const GraphicsColorMatrix&) = default;
};
using GraphicsStyle = std::variant<
GraphicsDropShadow,
GraphicsGaussianBlur,
GraphicsColorMatrix
>;
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const GraphicsDropShadow&);
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const GraphicsGaussianBlur&);
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const GraphicsColorMatrix&);
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const GraphicsStyle&);
} // namespace WebCore
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