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/*
* Copyright (C) 2003, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2005 Nokia. All rights reserved.
* 2008 Eric Seidel <eric@webkit.org>
*
* 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 COMPUTER, INC. ``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 COMPUTER, INC. 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 FloatSize_h
#define FloatSize_h
#include "IntSize.h"
#include <wtf/MathExtras.h>
#if USE(CG) || (PLATFORM(WX) && OS(DARWIN)) || USE(SKIA_ON_MAC_CHROME)
typedef struct CGSize CGSize;
#endif
#if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN))
#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
typedef struct CGSize NSSize;
#else
typedef struct _NSSize NSSize;
#endif
#endif
namespace WebCore {
class IntSize;
class FloatSize {
public:
FloatSize() : m_width(0), m_height(0) { }
FloatSize(float width, float height) : m_width(width), m_height(height) { }
FloatSize(const IntSize&);
static FloatSize narrowPrecision(double width, double height);
float width() const { return m_width; }
float height() const { return m_height; }
void setWidth(float width) { m_width = width; }
void setHeight(float height) { m_height = height; }
bool isEmpty() const { return m_width <= 0 || m_height <= 0; }
float aspectRatio() const { return m_width / m_height; }
void scale(float scale)
{
m_width *= scale;
m_height *= scale;
}
FloatSize expandedTo(const FloatSize& other) const
{
return FloatSize(m_width > other.m_width ? m_width : other.m_width,
m_height > other.m_height ? m_height : other.m_height);
}
FloatSize shrunkTo(const FloatSize& other) const
{
return FloatSize(m_width < other.m_width ? m_width : other.m_width,
m_height < other.m_height ? m_height : other.m_height);
}
float diagonalLength() const;
float diagonalLengthSquared() const
{
return m_width * m_width + m_height * m_height;
}
#if USE(CG) || (PLATFORM(WX) && OS(DARWIN)) || USE(SKIA_ON_MAC_CHROME)
explicit FloatSize(const CGSize&); // don't do this implicitly since it's lossy
operator CGSize() const;
#endif
#if (PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)) \
|| (PLATFORM(CHROMIUM) && OS(DARWIN))
explicit FloatSize(const NSSize &); // don't do this implicitly since it's lossy
operator NSSize() const;
#endif
private:
float m_width, m_height;
};
inline FloatSize& operator+=(FloatSize& a, const FloatSize& b)
{
a.setWidth(a.width() + b.width());
a.setHeight(a.height() + b.height());
return a;
}
inline FloatSize& operator-=(FloatSize& a, const FloatSize& b)
{
a.setWidth(a.width() - b.width());
a.setHeight(a.height() - b.height());
return a;
}
inline FloatSize operator+(const FloatSize& a, const FloatSize& b)
{
return FloatSize(a.width() + b.width(), a.height() + b.height());
}
inline FloatSize operator-(const FloatSize& a, const FloatSize& b)
{
return FloatSize(a.width() - b.width(), a.height() - b.height());
}
inline FloatSize operator-(const FloatSize& size)
{
return FloatSize(-size.width(), -size.height());
}
inline bool operator==(const FloatSize& a, const FloatSize& b)
{
return a.width() == b.width() && a.height() == b.height();
}
inline bool operator!=(const FloatSize& a, const FloatSize& b)
{
return a.width() != b.width() || a.height() != b.height();
}
inline IntSize roundedIntSize(const FloatSize& p)
{
return IntSize(static_cast<int>(roundf(p.width())), static_cast<int>(roundf(p.height())));
}
inline IntSize expandedIntSize(const FloatSize& p)
{
return IntSize(clampToInteger(ceilf(p.width())), clampToInteger(ceilf(p.height())));
}
} // namespace WebCore
#endif // FloatSize_h
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