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/*
* Copyright (C) 2012 Adobe Systems Incorporated. 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 HOLDERS AND CONTRIBUTORS
* "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 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.
*/
#ifndef PolygonShape_h
#define PolygonShape_h
#include "core/layout/shapes/Shape.h"
#include "core/layout/shapes/ShapeInterval.h"
#include "platform/geometry/FloatPolygon.h"
#include <memory>
namespace blink {
class OffsetPolygonEdge final : public VertexPair {
DISALLOW_NEW();
public:
OffsetPolygonEdge(const FloatPolygonEdge& edge, const FloatSize& offset)
: m_vertex1(edge.vertex1() + offset),
m_vertex2(edge.vertex2() + offset) {}
const FloatPoint& vertex1() const override { return m_vertex1; }
const FloatPoint& vertex2() const override { return m_vertex2; }
bool isWithinYRange(float y1, float y2) const {
return y1 <= minY() && y2 >= maxY();
}
bool overlapsYRange(float y1, float y2) const {
return y2 >= minY() && y1 <= maxY();
}
float xIntercept(float y) const;
FloatShapeInterval clippedEdgeXRange(float y1, float y2) const;
private:
FloatPoint m_vertex1;
FloatPoint m_vertex2;
};
class PolygonShape final : public Shape {
WTF_MAKE_NONCOPYABLE(PolygonShape);
public:
PolygonShape(std::unique_ptr<Vector<FloatPoint>> vertices, WindRule fillRule)
: Shape(), m_polygon(std::move(vertices), fillRule) {}
LayoutRect shapeMarginLogicalBoundingBox() const override;
bool isEmpty() const override { return m_polygon.isEmpty(); }
LineSegment getExcludedInterval(LayoutUnit logicalTop,
LayoutUnit logicalHeight) const override;
void buildDisplayPaths(DisplayPaths&) const override;
private:
FloatPolygon m_polygon;
};
} // namespace blink
#endif // PolygonShape_h
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