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1 /* | 1 /* |
2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. | 2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above | 8 * 1. Redistributions of source code must retain the above |
9 * copyright notice, this list of conditions and the following | 9 * copyright notice, this list of conditions and the following |
10 * disclaimer. | 10 * disclaimer. |
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
27 * OF THE POSSIBILITY OF SUCH DAMAGE. | 27 * OF THE POSSIBILITY OF SUCH DAMAGE. |
28 */ | 28 */ |
29 | 29 |
30 #ifndef PolygonShape_h | 30 #ifndef PolygonShape_h |
31 #define PolygonShape_h | 31 #define PolygonShape_h |
32 | 32 |
33 #include "core/rendering/shapes/Shape.h" | 33 #include "core/rendering/shapes/Shape.h" |
| 34 #include "core/rendering/shapes/ShapeInterval.h" |
34 #include "platform/geometry/FloatPolygon.h" | 35 #include "platform/geometry/FloatPolygon.h" |
35 | 36 |
36 namespace WebCore { | 37 namespace WebCore { |
37 | 38 |
38 class OffsetPolygonEdge FINAL : public VertexPair { | 39 class OffsetPolygonEdge FINAL : public VertexPair { |
39 public: | 40 public: |
40 enum Basis { | |
41 Edge, | |
42 Vertex, | |
43 LineTop | |
44 }; | |
45 | |
46 OffsetPolygonEdge(const FloatPolygonEdge& edge, const FloatSize& offset) | 41 OffsetPolygonEdge(const FloatPolygonEdge& edge, const FloatSize& offset) |
47 : m_vertex1(edge.vertex1() + offset) | 42 : m_vertex1(edge.vertex1() + offset) |
48 , m_vertex2(edge.vertex2() + offset) | 43 , m_vertex2(edge.vertex2() + offset) |
49 , m_edgeIndex(edge.edgeIndex()) | |
50 , m_basis(Edge) | |
51 { | |
52 } | |
53 | |
54 OffsetPolygonEdge(const FloatPoint& reflexVertex, const FloatSize& offset1,
const FloatSize& offset2) | |
55 : m_vertex1(reflexVertex + offset1) | |
56 , m_vertex2(reflexVertex + offset2) | |
57 , m_edgeIndex(-1) | |
58 , m_basis(Vertex) | |
59 { | |
60 } | |
61 | |
62 OffsetPolygonEdge(const FloatPolygon& polygon, float minLogicalIntervalTop,
const FloatSize& offset) | |
63 : m_vertex1(FloatPoint(polygon.boundingBox().x(), minLogicalIntervalTop)
+ offset) | |
64 , m_vertex2(FloatPoint(polygon.boundingBox().maxX(), minLogicalIntervalT
op) + offset) | |
65 , m_edgeIndex(-1) | |
66 , m_basis(LineTop) | |
67 { | 44 { |
68 } | 45 } |
69 | 46 |
70 virtual const FloatPoint& vertex1() const OVERRIDE { return m_vertex1; } | 47 virtual const FloatPoint& vertex1() const OVERRIDE { return m_vertex1; } |
71 virtual const FloatPoint& vertex2() const OVERRIDE { return m_vertex2; } | 48 virtual const FloatPoint& vertex2() const OVERRIDE { return m_vertex2; } |
72 int edgeIndex() const { return m_edgeIndex; } | 49 |
73 Basis basis() const { return m_basis; } | 50 bool isWithinYRange(float y1, float y2) const { return y1 <= minY() && y2 >=
maxY(); } |
| 51 bool overlapsYRange(float y1, float y2) const { return y2 >= minY() && y1 <=
maxY(); } |
| 52 float xIntercept(float y) const; |
| 53 FloatShapeInterval clippedEdgeXRange(float y1, float y2) const; |
74 | 54 |
75 private: | 55 private: |
76 FloatPoint m_vertex1; | 56 FloatPoint m_vertex1; |
77 FloatPoint m_vertex2; | 57 FloatPoint m_vertex2; |
78 int m_edgeIndex; | |
79 Basis m_basis; | |
80 }; | 58 }; |
81 | 59 |
82 class PolygonShape FINAL : public Shape { | 60 class PolygonShape FINAL : public Shape { |
83 WTF_MAKE_NONCOPYABLE(PolygonShape); | 61 WTF_MAKE_NONCOPYABLE(PolygonShape); |
84 public: | 62 public: |
85 PolygonShape(PassOwnPtr<Vector<FloatPoint> > vertices, WindRule fillRule) | 63 PolygonShape(PassOwnPtr<Vector<FloatPoint> > vertices, WindRule fillRule) |
86 : Shape() | 64 : Shape() |
87 , m_polygon(vertices, fillRule) | 65 , m_polygon(vertices, fillRule) |
88 , m_marginBounds(nullptr) | |
89 { | 66 { |
90 } | 67 } |
91 | 68 |
92 virtual LayoutRect shapeMarginLogicalBoundingBox() const OVERRIDE { return s
tatic_cast<LayoutRect>(shapeMarginBounds().boundingBox()); } | 69 virtual LayoutRect shapeMarginLogicalBoundingBox() const OVERRIDE; |
93 virtual bool isEmpty() const OVERRIDE { return m_polygon.isEmpty(); } | 70 virtual bool isEmpty() const OVERRIDE { return m_polygon.isEmpty(); } |
94 virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalH
eight, SegmentList&) const OVERRIDE; | 71 virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalH
eight, SegmentList&) const OVERRIDE; |
95 | 72 |
96 private: | 73 private: |
97 const FloatPolygon& shapeMarginBounds() const; | |
98 | |
99 FloatPolygon m_polygon; | 74 FloatPolygon m_polygon; |
100 mutable OwnPtr<FloatPolygon> m_marginBounds; | |
101 }; | 75 }; |
102 | 76 |
103 } // namespace WebCore | 77 } // namespace WebCore |
104 | 78 |
105 #endif // PolygonShape_h | 79 #endif // PolygonShape_h |
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