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#ifndef ESIZE_H
#define ESIZE_H
#include <iostream>
#define MIN(a,b) (a < b ? a : b)
#define MAX(a,b) (a > b ? a : b)
class eSize
{
public:
eSize();
eSize( int w, int h );
bool isNull() const;
bool isEmpty() const;
bool isValid() const;
int width() const;
int height() const;
void setWidth( int w );
void setHeight( int h );
void transpose();
eSize expandedTo( const eSize & ) const;
eSize boundedTo( const eSize & ) const;
int &rwidth();
int &rheight();
eSize &operator+=( const eSize & );
eSize &operator-=( const eSize & );
eSize &operator*=( int c );
eSize &operator*=( double c );
eSize &operator/=( int c );
eSize &operator/=( double c );
friend inline bool operator==( const eSize &, const eSize & );
friend inline bool operator!=( const eSize &, const eSize & );
friend inline eSize operator+( const eSize &, const eSize & );
friend inline eSize operator-( const eSize &, const eSize & );
friend inline eSize operator*( const eSize &, int );
friend inline eSize operator*( int, const eSize & );
friend inline eSize operator*( const eSize &, double );
friend inline eSize operator*( double, const eSize & );
friend inline eSize operator/( const eSize &, int );
friend inline eSize operator/( const eSize &, double );
private:
int wd;
int ht;
};
/*****************************************************************************
eSize stream functions
*****************************************************************************/
namespace std
{
inline ostream &operator<<( ostream &s, const eSize &sz )
{
s << sz.width() << sz.height();
return s;
}
inline istream &operator>>( istream &s, eSize &sz )
{
s >> sz.rwidth() >> sz.rheight();
return s;
}
}
/*****************************************************************************
eSize inline functions
*****************************************************************************/
inline eSize::eSize()
{ wd = ht = -1; }
inline eSize::eSize( int w, int h )
{ wd=w; ht=h; }
inline bool eSize::isNull() const
{ return wd==0 && ht==0; }
inline bool eSize::isEmpty() const
{ return wd<1 || ht<1; }
inline bool eSize::isValid() const
{ return wd>=0 && ht>=0; }
inline int eSize::width() const
{ return wd; }
inline int eSize::height() const
{ return ht; }
inline void eSize::setWidth( int w )
{ wd=w; }
inline void eSize::setHeight( int h )
{ ht=h; }
inline int &eSize::rwidth()
{ return wd; }
inline int &eSize::rheight()
{ return ht; }
inline eSize &eSize::operator+=( const eSize &s )
{ wd+=s.wd; ht+=s.ht; return *this; }
inline eSize &eSize::operator-=( const eSize &s )
{ wd-=s.wd; ht-=s.ht; return *this; }
inline eSize &eSize::operator*=( int c )
{ wd*=c; ht*=c; return *this; }
inline eSize &eSize::operator*=( double c )
{ wd=(int)(wd*c); ht=(int)(ht*c); return *this; }
inline bool operator==( const eSize &s1, const eSize &s2 )
{ return s1.wd == s2.wd && s1.ht == s2.ht; }
inline bool operator!=( const eSize &s1, const eSize &s2 )
{ return s1.wd != s2.wd || s1.ht != s2.ht; }
inline eSize operator+( const eSize & s1, const eSize & s2 )
{ return eSize(s1.wd+s2.wd, s1.ht+s2.ht); }
inline eSize operator-( const eSize &s1, const eSize &s2 )
{ return eSize(s1.wd-s2.wd, s1.ht-s2.ht); }
inline eSize operator*( const eSize &s, int c )
{ return eSize(s.wd*c, s.ht*c); }
inline eSize operator*( int c, const eSize &s )
{ return eSize(s.wd*c, s.ht*c); }
inline eSize operator*( const eSize &s, double c )
{ return eSize((int)(s.wd*c), (int)(s.ht*c)); }
inline eSize operator*( double c, const eSize &s )
{ return eSize((int)(s.wd*c), (int)(s.ht*c)); }
inline eSize &eSize::operator/=( int c )
{
wd/=c; ht/=c;
return *this;
}
inline eSize &eSize::operator/=( double c )
{
wd=(int)(wd/c); ht=(int)(ht/c);
return *this;
}
inline eSize operator/( const eSize &s, int c )
{
return eSize(s.wd/c, s.ht/c);
}
inline eSize operator/( const eSize &s, double c )
{
return eSize((int)(s.wd/c), (int)(s.ht/c));
}
inline eSize eSize::expandedTo( const eSize & otherSize ) const
{
return eSize( MAX(wd,otherSize.wd), MAX(ht,otherSize.ht) );
}
inline eSize eSize::boundedTo( const eSize & otherSize ) const
{
return eSize( MIN(wd,otherSize.wd), MIN(ht,otherSize.ht) );
}
inline void eSize::transpose()
{
int tmp = wd;
wd = ht;
ht = tmp;
}
#endif // ESIZE_H
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