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/*
* Copyright (c) 2012, 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 LayoutSize_h
#define LayoutSize_h
#include "FloatSize.h"
#include "IntSize.h"
#include "LayoutUnit.h"
namespace WebCore {
class LayoutPoint;
class LayoutSize {
public:
LayoutSize() : m_width(0), m_height(0) { }
LayoutSize(const IntSize& size) : m_width(size.width()), m_height(size.height()) { }
LayoutSize(LayoutUnit width, LayoutUnit height) : m_width(width), m_height(height) { }
explicit LayoutSize(const FloatSize& size) : m_width(size.width()), m_height(size.height()) { }
LayoutUnit width() const { return m_width; }
LayoutUnit height() const { return m_height; }
void setWidth(LayoutUnit width) { m_width = width; }
void setHeight(LayoutUnit height) { m_height = height; }
bool isEmpty() const { return m_width <= 0 || m_height <= 0; }
bool isZero() const { return !m_width && !m_height; }
float aspectRatio() const { return static_cast<float>(m_width) / static_cast<float>(m_height); }
void expand(LayoutUnit width, LayoutUnit height)
{
m_width += width;
m_height += height;
}
void shrink(LayoutUnit width, LayoutUnit height)
{
m_width -= width;
m_height -= height;
}
void scale(float scale)
{
m_width *= scale;
m_height *= scale;
}
void scale(float widthScale, float heightScale)
{
m_width *= widthScale;
m_height *= heightScale;
}
LayoutSize expandedTo(const LayoutSize& other) const
{
return LayoutSize(m_width > other.m_width ? m_width : other.m_width,
m_height > other.m_height ? m_height : other.m_height);
}
LayoutSize shrunkTo(const LayoutSize& other) const
{
return LayoutSize(m_width < other.m_width ? m_width : other.m_width,
m_height < other.m_height ? m_height : other.m_height);
}
void clampNegativeToZero()
{
*this = expandedTo(LayoutSize());
}
void clampToMinimumSize(const LayoutSize& minimumSize)
{
if (m_width < minimumSize.width())
m_width = minimumSize.width();
if (m_height < minimumSize.height())
m_height = minimumSize.height();
}
LayoutSize transposedSize() const
{
return LayoutSize(m_height, m_width);
}
operator FloatSize() const { return FloatSize(m_width, m_height); }
private:
LayoutUnit m_width, m_height;
};
inline LayoutSize& operator+=(LayoutSize& a, const LayoutSize& b)
{
a.setWidth(a.width() + b.width());
a.setHeight(a.height() + b.height());
return a;
}
inline LayoutSize& operator-=(LayoutSize& a, const LayoutSize& b)
{
a.setWidth(a.width() - b.width());
a.setHeight(a.height() - b.height());
return a;
}
inline LayoutSize operator+(const LayoutSize& a, const LayoutSize& b)
{
return LayoutSize(a.width() + b.width(), a.height() + b.height());
}
inline LayoutSize operator-(const LayoutSize& a, const LayoutSize& b)
{
return LayoutSize(a.width() - b.width(), a.height() - b.height());
}
inline LayoutSize operator-(const LayoutSize& size)
{
return LayoutSize(-size.width(), -size.height());
}
inline bool operator==(const LayoutSize& a, const LayoutSize& b)
{
return a.width() == b.width() && a.height() == b.height();
}
inline bool operator!=(const LayoutSize& a, const LayoutSize& b)
{
return a.width() != b.width() || a.height() != b.height();
}
inline IntSize flooredIntSize(const LayoutSize& s)
{
return IntSize(s.width().floor(), s.height().floor());
}
inline IntSize roundedIntSize(const LayoutSize& s)
{
return IntSize(s.width().round(), s.height().round());
}
inline LayoutSize roundedLayoutSize(const FloatSize& s)
{
#if ENABLE(SUBPIXEL_LAYOUT)
return LayoutSize(s);
#else
return roundedIntSize(s);
#endif
}
} // namespace WebCore
#endif // LayoutSize_h
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