FractionalLayoutSize.h [plain text]
#ifndef FractionalLayoutSize_h
#define FractionalLayoutSize_h
#include "FloatSize.h"
#include "FractionalLayoutUnit.h"
#include "IntSize.h"
namespace WebCore {
class FractionalLayoutPoint;
class FractionalLayoutSize {
public:
FractionalLayoutSize() : m_width(0), m_height(0) { }
FractionalLayoutSize(const IntSize& size) : m_width(size.width()), m_height(size.height()) { }
FractionalLayoutSize(FractionalLayoutUnit width, FractionalLayoutUnit height) : m_width(width), m_height(height) { }
explicit FractionalLayoutSize(const FloatSize& size) : m_width(size.width()), m_height(size.height()) { }
FractionalLayoutUnit width() const { return m_width; }
FractionalLayoutUnit height() const { return m_height; }
void setWidth(FractionalLayoutUnit width) { m_width = width; }
void setHeight(FractionalLayoutUnit 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(FractionalLayoutUnit width, FractionalLayoutUnit height)
{
m_width += width;
m_height += height;
}
void scale(float scale)
{
m_width = static_cast<int>(static_cast<float>(m_width) * scale);
m_height = static_cast<int>(static_cast<float>(m_height) * scale);
}
FractionalLayoutSize expandedTo(const FractionalLayoutSize& other) const
{
return FractionalLayoutSize(m_width > other.m_width ? m_width : other.m_width,
m_height > other.m_height ? m_height : other.m_height);
}
FractionalLayoutSize shrunkTo(const FractionalLayoutSize& other) const
{
return FractionalLayoutSize(m_width < other.m_width ? m_width : other.m_width,
m_height < other.m_height ? m_height : other.m_height);
}
void clampNegativeToZero()
{
*this = expandedTo(FractionalLayoutSize());
}
FractionalLayoutSize transposedSize() const
{
return FractionalLayoutSize(m_height, m_width);
}
private:
FractionalLayoutUnit m_width, m_height;
};
inline FractionalLayoutSize& operator+=(FractionalLayoutSize& a, const FractionalLayoutSize& b)
{
a.setWidth(a.width() + b.width());
a.setHeight(a.height() + b.height());
return a;
}
inline FractionalLayoutSize& operator-=(FractionalLayoutSize& a, const FractionalLayoutSize& b)
{
a.setWidth(a.width() - b.width());
a.setHeight(a.height() - b.height());
return a;
}
inline FractionalLayoutSize operator+(const FractionalLayoutSize& a, const FractionalLayoutSize& b)
{
return FractionalLayoutSize(a.width() + b.width(), a.height() + b.height());
}
inline FractionalLayoutSize operator-(const FractionalLayoutSize& a, const FractionalLayoutSize& b)
{
return FractionalLayoutSize(a.width() - b.width(), a.height() - b.height());
}
inline FractionalLayoutSize operator-(const FractionalLayoutSize& size)
{
return FractionalLayoutSize(-size.width(), -size.height());
}
inline bool operator==(const FractionalLayoutSize& a, const FractionalLayoutSize& b)
{
return a.width() == b.width() && a.height() == b.height();
}
inline bool operator!=(const FractionalLayoutSize& a, const FractionalLayoutSize& b)
{
return a.width() != b.width() || a.height() != b.height();
}
inline IntSize flooredIntSize(const FractionalLayoutSize& s)
{
return IntSize(s.width().toInt(), s.height().toInt());
}
inline IntSize roundedIntSize(const FractionalLayoutSize& s)
{
return IntSize(s.width().round(), s.height().round());
}
IntSize pixelSnappedIntSize(const FractionalLayoutSize&, const FractionalLayoutPoint&);
}
#endif // FractionalLayoutSize_h