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/*
* Copyright (C) 2013 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER 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 FloatBoxExtent_h
#define FloatBoxExtent_h
#include "platform/geometry/FloatRect.h"
namespace WebCore {
class FloatBoxExtent {
public:
FloatBoxExtent()
: m_top(0)
, m_right(0)
, m_bottom(0)
, m_left(0)
{
}
FloatBoxExtent(float top, float right, float bottom, float left)
: m_top(top)
, m_right(right)
, m_bottom(bottom)
, m_left(left)
{
}
float top() const { return m_top; }
void setTop(float top) { m_top = top; }
float right() const { return m_right; }
void setRight(float right) { m_right = right; }
float bottom() const { return m_bottom; }
void setBottom(float bottom) { m_bottom = bottom; }
float left() const { return m_left; }
void setLeft(float left) { m_left = left; }
bool isZero() const { return !left() && !right() && !top() && !bottom(); }
void expandRect(FloatRect& rect) const
{
if (isZero())
return;
rect.move(-left(), -top());
rect.expand(left() + right(), top() + bottom());
}
void unite(const FloatBoxExtent& other)
{
m_top = std::min(m_top, other.top());
m_right = std::max(m_right, other.right());
m_bottom = std::max(m_bottom, other.bottom());
m_left = std::min(m_left, other.left());
}
void unite(const FloatRect& rect)
{
m_top = std::min(m_top, rect.y());
m_right = std::max(m_right, rect.maxX());
m_bottom = std::max(m_bottom, rect.maxY());
m_left = std::min(m_left, rect.x());
}
private:
float m_top;
float m_right;
float m_bottom;
float m_left;
};
inline bool operator==(const FloatBoxExtent& a, const FloatBoxExtent& b)
{
return a.top() == b.top()
&& a.right() == b.right()
&& a.bottom() == b.bottom()
&& a.left() == b.left();
}
inline bool operator!=(const FloatBoxExtent& a, const FloatBoxExtent& b)
{
return !(a == b);
}
inline void operator+=(FloatBoxExtent& a, const FloatBoxExtent& b)
{
a.setTop(a.top() + b.top());
a.setRight(a.right() + b.right());
a.setBottom(a.bottom() + b.bottom());
a.setLeft(a.left() + b.left());
}
} // namespace WebCore
#endif // FloatBoxExtent_h
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