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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 RoundedIntRect_h
     28 #define RoundedIntRect_h
     29 
     30 #include "IntRect.h"
     31 
     32 namespace WebCore {
     33 
     34 
     35 class RoundedIntRect {
     36 public:
     37     class Radii {
     38     public:
     39         Radii() {}
     40         Radii(const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight)
     41             : m_topLeft(topLeft)
     42             , m_topRight(topRight)
     43             , m_bottomLeft(bottomLeft)
     44             , m_bottomRight(bottomRight)
     45         {
     46         }
     47 
     48         void setTopLeft(const IntSize& size) { m_topLeft = size; }
     49         void setTopRight(const IntSize& size) { m_topRight = size; }
     50         void setBottomLeft(const IntSize& size) { m_bottomLeft = size; }
     51         void setBottomRight(const IntSize& size) { m_bottomRight = size; }
     52         const IntSize& topLeft() const { return m_topLeft; }
     53         const IntSize& topRight() const { return m_topRight; }
     54         const IntSize& bottomLeft() const { return m_bottomLeft; }
     55         const IntSize& bottomRight() const { return m_bottomRight; }
     56 
     57         bool isZero() const;
     58 
     59         void includeLogicalEdges(const Radii& edges, bool isHorizontal, bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
     60         void excludeLogicalEdges(bool isHorizontal, bool excludeLogicalLeftEdge, bool excludeLogicalRightEdge);
     61 
     62         void scale(float factor);
     63         void expand(int topWidth, int bottomWidth, int leftWidth, int rightWidth);
     64         void expand(int size) { expand(size, size, size, size); }
     65         void shrink(int topWidth, int bottomWidth, int leftWidth, int rightWidth) { expand(-topWidth, -bottomWidth, -leftWidth, -rightWidth); }
     66         void shrink(int size) { shrink(size, size, size, size); }
     67 
     68     private:
     69         IntSize m_topLeft;
     70         IntSize m_topRight;
     71         IntSize m_bottomLeft;
     72         IntSize m_bottomRight;
     73     };
     74 
     75     explicit RoundedIntRect(const IntRect&, const Radii& = Radii());
     76     RoundedIntRect(int x, int y, int width, int height);
     77     RoundedIntRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight);
     78 
     79     const IntRect& rect() const { return m_rect; }
     80     const Radii& radii() const { return m_radii; }
     81     bool isRounded() const { return !m_radii.isZero(); }
     82     bool isEmpty() const { return m_rect.isEmpty(); }
     83 
     84     void setRect(const IntRect& rect) { m_rect = rect; }
     85     void setRadii(const Radii& radii) { m_radii = radii; }
     86 
     87     void move(const IntSize& size) { m_rect.move(size); }
     88     void inflate(int size) { m_rect.inflate(size);  }
     89     void inflateWithRadii(int size) { m_rect.inflate(size); m_radii.expand(size); }
     90     void expandRadii(int size) { m_radii.expand(size); }
     91     void shrinkRadii(int size) { m_radii.shrink(size); }
     92 
     93     void includeLogicalEdges(const Radii& edges, bool isHorizontal, bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
     94     void excludeLogicalEdges(bool isHorizontal, bool excludeLogicalLeftEdge, bool excludeLogicalRightEdge);
     95 
     96     bool isRenderable() const;
     97 
     98 private:
     99     IntRect m_rect;
    100     Radii m_radii;
    101 };
    102 
    103 inline bool operator==(const RoundedIntRect::Radii& a, const RoundedIntRect::Radii& b)
    104 {
    105     return a.topLeft() == b.topLeft() && a.topRight() == b.topRight() && a.bottomLeft() == b.bottomLeft() && a.bottomRight() == b.bottomRight();
    106 }
    107 
    108 inline bool operator==(const RoundedIntRect& a, const RoundedIntRect& b)
    109 {
    110     return a.rect() == b.rect() && a.radii() == b.radii();
    111 }
    112 
    113 
    114 } // namespace WebCore
    115 
    116 #endif // RoundedIntRect_h
    117