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/*
* Copyright (C) 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 "PathSegmentData.h"
#include <wtf/Function.h>
namespace WebCore {
class PathSegment {
public:
using Data = Variant<
PathMoveTo,
PathLineTo,
PathQuadCurveTo,
PathBezierCurveTo,
PathArcTo,
PathArc,
PathClosedArc,
PathEllipse,
PathEllipseInRect,
PathRect,
PathRoundedRect,
PathContinuousRoundedRect,
PathDataLine,
PathDataQuadCurve,
PathDataBezierCurve,
PathDataArc,
PathCloseSubpath
>;
PathSegment(Data&&);
bool operator==(const PathSegment&) const = default;
const Data& data() const & { return m_data; }
Data&& data() && { return WTFMove(m_data); }
bool closesSubpath() const { return std::holds_alternative<PathCloseSubpath>(m_data) || std::holds_alternative<PathClosedArc>(m_data); }
FloatPoint calculateEndPoint(const FloatPoint& currentPoint, FloatPoint& lastMoveToPoint) const;
std::optional<FloatPoint> tryGetEndPointWithoutContext() const;
FloatRect fastBoundingRect() const;
void extendFastBoundingRect(const FloatPoint& currentPoint, const FloatPoint& lastMoveToPoint, FloatRect& boundingRect) const;
void extendBoundingRect(const FloatPoint& currentPoint, const FloatPoint& lastMoveToPoint, FloatRect& boundingRect) const;
bool canApplyElements() const;
bool applyElements(const PathElementApplier&) const;
bool canTransform() const;
bool transform(const AffineTransform&);
private:
Data m_data;
};
using PathSegmentApplier = Function<void(const PathSegment&)>;
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const PathSegment&);
inline PathSegment::PathSegment(Data&& data)
: m_data(WTFMove(data))
{
}
} // namespace WebCore
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