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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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