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81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
/*
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* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PolygonShape_h
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#define PolygonShape_h
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#include "core/rendering/shapes/Shape.h"
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#include "core/rendering/shapes/ShapeInterval.h"
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#include "platform/geometry/FloatPolygon.h"
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namespace blink {
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class OffsetPolygonEdge FINAL : public VertexPair {
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public:
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OffsetPolygonEdge(const FloatPolygonEdge& edge, const FloatSize& offset)
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: m_vertex1(edge.vertex1() + offset)
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, m_vertex2(edge.vertex2() + offset)
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{
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}
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virtual const FloatPoint& vertex1() const OVERRIDE { return m_vertex1; }
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virtual const FloatPoint& vertex2() const OVERRIDE { return m_vertex2; }
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bool isWithinYRange(float y1, float y2) const { return y1 <= minY() && y2 >= maxY(); }
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bool overlapsYRange(float y1, float y2) const { return y2 >= minY() && y1 <= maxY(); }
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float xIntercept(float y) const;
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FloatShapeInterval clippedEdgeXRange(float y1, float y2) const;
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private:
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FloatPoint m_vertex1;
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FloatPoint m_vertex2;
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};
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class PolygonShape FINAL : public Shape {
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WTF_MAKE_NONCOPYABLE(PolygonShape);
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public:
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PolygonShape(PassOwnPtr<Vector<FloatPoint> > vertices, WindRule fillRule)
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: Shape()
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, m_polygon(vertices, fillRule)
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{
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}
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virtual LayoutRect shapeMarginLogicalBoundingBox() const OVERRIDE;
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virtual bool isEmpty() const OVERRIDE { return m_polygon.isEmpty(); }
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virtual LineSegment getExcludedInterval(LayoutUnit logicalTop, LayoutUnit logicalHeight) const OVERRIDE;
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virtual void buildDisplayPaths(DisplayPaths&) const OVERRIDE;
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private:
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FloatPolygon m_polygon;
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};
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} // namespace blink
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#endif // PolygonShape_h
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