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Side by Side Diff: Source/platform/geometry/RoundedRect.h

Issue 815933006: Change all uses of the RoundedRect class to use FloatRoundedRect instead. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 5 years, 12 months ago
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1 /*
2 * Copyright (C) 2003, 2006, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef RoundedRect_h
28 #define RoundedRect_h
29
30 #include "platform/geometry/FloatQuad.h"
31 #include "platform/geometry/IntRect.h"
32
33 namespace blink {
34
35 // This class is used to represent rectangles with rounded corners. It is only
36 // used for painting. It uses integer units because using layout units leads to
37 // blurry rounded corners.
38 class PLATFORM_EXPORT RoundedRect {
39 public:
40 class PLATFORM_EXPORT Radii {
41 public:
42 Radii() { }
43 Radii(const IntSize& topLeft, const IntSize& topRight, const IntSize& bo ttomLeft, const IntSize& bottomRight)
44 : m_topLeft(topLeft)
45 , m_topRight(topRight)
46 , m_bottomLeft(bottomLeft)
47 , m_bottomRight(bottomRight)
48 {
49 }
50
51 void setTopLeft(const IntSize& size) { m_topLeft = size; }
52 void setTopRight(const IntSize& size) { m_topRight = size; }
53 void setBottomLeft(const IntSize& size) { m_bottomLeft = size; }
54 void setBottomRight(const IntSize& size) { m_bottomRight = size; }
55 const IntSize& topLeft() const { return m_topLeft; }
56 const IntSize& topRight() const { return m_topRight; }
57 const IntSize& bottomLeft() const { return m_bottomLeft; }
58 const IntSize& bottomRight() const { return m_bottomRight; }
59
60 bool isZero() const;
61
62 void includeLogicalEdges(const Radii& edges, bool isHorizontal, bool inc ludeLogicalLeftEdge, bool includeLogicalRightEdge);
63 void excludeLogicalEdges(bool isHorizontal, bool excludeLogicalLeftEdge, bool excludeLogicalRightEdge);
64
65 void scale(float factor);
66 void expand(int topWidth, int bottomWidth, int leftWidth, int rightWidth );
67 void expand(int size) { expand(size, size, size, size); }
68 void shrink(int topWidth, int bottomWidth, int leftWidth, int rightWidth ) { expand(-topWidth, -bottomWidth, -leftWidth, -rightWidth); }
69 void shrink(int size) { shrink(size, size, size, size); }
70
71 private:
72 IntSize m_topLeft;
73 IntSize m_topRight;
74 IntSize m_bottomLeft;
75 IntSize m_bottomRight;
76 };
77
78 explicit RoundedRect(const IntRect&, const Radii& = Radii());
79 RoundedRect(int x, int y, int width, int height);
80 RoundedRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight);
81
82 const IntRect& rect() const { return m_rect; }
83 const Radii& radii() const { return m_radii; }
84 bool isRounded() const { return !m_radii.isZero(); }
85 bool isEmpty() const { return m_rect.isEmpty(); }
86
87 // Returns a quickly computed rect enclosed by the rounded rect.
88 IntRect radiusCenterRect() const;
89
90 void setRect(const IntRect& rect) { m_rect = rect; }
91 void setRadii(const Radii& radii) { m_radii = radii; }
92
93 void move(const IntSize& size) { m_rect.move(size); }
94 void inflate(int size) { m_rect.inflate(size); }
95 void inflateWithRadii(int size);
96 void expandRadii(int size) { m_radii.expand(size); }
97 void shrinkRadii(int size) { m_radii.shrink(size); }
98
99 void includeLogicalEdges(const Radii& edges, bool isHorizontal, bool include LogicalLeftEdge, bool includeLogicalRightEdge);
100 void excludeLogicalEdges(bool isHorizontal, bool excludeLogicalLeftEdge, boo l excludeLogicalRightEdge);
101
102 bool isRenderable() const;
103 void adjustRadii();
104
105 // Tests whether the quad intersects any part of this rounded rectangle.
106 // This only works for convex quads.
107 bool intersectsQuad(const FloatQuad&) const;
108
109 private:
110 IntRect m_rect;
111 Radii m_radii;
112 };
113
114 inline bool operator==(const RoundedRect::Radii& a, const RoundedRect::Radii& b)
115 {
116 return a.topLeft() == b.topLeft() && a.topRight() == b.topRight() && a.botto mLeft() == b.bottomLeft() && a.bottomRight() == b.bottomRight();
117 }
118
119 inline bool operator!=(const RoundedRect::Radii& a, const RoundedRect::Radii& b)
120 {
121 return !(a == b);
122 }
123
124 inline bool operator==(const RoundedRect& a, const RoundedRect& b)
125 {
126 return a.rect() == b.rect() && a.radii() == b.radii();
127 }
128
129
130 } // namespace blink
131
132 #endif // RoundedRect_h
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