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/*
* Copyright (C) 2003, 2006, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RoundedRect_h
#define RoundedRect_h
#include "platform/geometry/FloatQuad.h"
#include "platform/geometry/IntRect.h"
namespace WebCore {
// This class is used to represent rectangles with rounded corners. It is only
// used for painting. It uses integer units because using layout units leads to
// blurry rounded corners.
class PLATFORM_EXPORT RoundedRect {
public:
class PLATFORM_EXPORT Radii {
public:
Radii() { }
Radii(const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight)
: m_topLeft(topLeft)
, m_topRight(topRight)
, m_bottomLeft(bottomLeft)
, m_bottomRight(bottomRight)
{
}
void setTopLeft(const IntSize& size) { m_topLeft = size; }
void setTopRight(const IntSize& size) { m_topRight = size; }
void setBottomLeft(const IntSize& size) { m_bottomLeft = size; }
void setBottomRight(const IntSize& size) { m_bottomRight = size; }
const IntSize& topLeft() const { return m_topLeft; }
const IntSize& topRight() const { return m_topRight; }
const IntSize& bottomLeft() const { return m_bottomLeft; }
const IntSize& bottomRight() const { return m_bottomRight; }
bool isZero() const;
void includeLogicalEdges(const Radii& edges, bool isHorizontal, bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
void excludeLogicalEdges(bool isHorizontal, bool excludeLogicalLeftEdge, bool excludeLogicalRightEdge);
void scale(float factor);
void expand(int topWidth, int bottomWidth, int leftWidth, int rightWidth);
void expand(int size) { expand(size, size, size, size); }
void shrink(int topWidth, int bottomWidth, int leftWidth, int rightWidth) { expand(-topWidth, -bottomWidth, -leftWidth, -rightWidth); }
void shrink(int size) { shrink(size, size, size, size); }
private:
IntSize m_topLeft;
IntSize m_topRight;
IntSize m_bottomLeft;
IntSize m_bottomRight;
};
explicit RoundedRect(const IntRect&, const Radii& = Radii());
RoundedRect(int x, int y, int width, int height);
RoundedRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight);
const IntRect& rect() const { return m_rect; }
const Radii& radii() const { return m_radii; }
bool isRounded() const { return !m_radii.isZero(); }
bool isEmpty() const { return m_rect.isEmpty(); }
// Returns a quickly computed rect enclosed by the rounded rect.
IntRect radiusCenterRect() const;
void setRect(const IntRect& rect) { m_rect = rect; }
void setRadii(const Radii& radii) { m_radii = radii; }
void move(const IntSize& size) { m_rect.move(size); }
void inflate(int size) { m_rect.inflate(size); }
void inflateWithRadii(int size);
void expandRadii(int size) { m_radii.expand(size); }
void shrinkRadii(int size) { m_radii.shrink(size); }
void includeLogicalEdges(const Radii& edges, bool isHorizontal, bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
void excludeLogicalEdges(bool isHorizontal, bool excludeLogicalLeftEdge, bool excludeLogicalRightEdge);
bool isRenderable() const;
void adjustRadii();
// Tests whether the quad intersects any part of this rounded rectangle.
// This only works for convex quads.
bool intersectsQuad(const FloatQuad&) const;
private:
IntRect m_rect;
Radii m_radii;
};
inline bool operator==(const RoundedRect::Radii& a, const RoundedRect::Radii& b)
{
return a.topLeft() == b.topLeft() && a.topRight() == b.topRight() && a.bottomLeft() == b.bottomLeft() && a.bottomRight() == b.bottomRight();
}
inline bool operator!=(const RoundedRect::Radii& a, const RoundedRect::Radii& b)
{
return !(a == b);
}
inline bool operator==(const RoundedRect& a, const RoundedRect& b)
{
return a.rect() == b.rect() && a.radii() == b.radii();
}
} // namespace WebCore
#endif // RoundedRect_h
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