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#ifndef ERECT_H
#define ERECT_H
#include <lib/gdi/esize.h>
#include <lib/gdi/epoint.h>
// x2 = x1 + width (AND NOT, NEVER, NEVER EVER +1 or -1 !!!!)
class eRect // rectangle class
{
friend class gRegion;
public:
/* eRect() constructs an INVALID rectangle. */
eRect() { x1 = y1 = 0; x2 = y2 = -1; }
eRect( const ePoint &topleft, const ePoint &bottomright );
// we use this contructor very often... do it inline...
eRect( const ePoint &topleft, const eSize &size )
{
x1 = topleft.x();
y1 = topleft.y();
x2 = (x1+size.width());
y2 = (y1+size.height());
}
eRect( int left, int top, int width, int height );
bool empty() const;
bool valid() const;
eRect normalize() const;
int left() const;
int top() const;
int right() const;
int bottom() const;
int &rLeft();
int &rTop();
int &rRight();
int &rBottom();
int x() const;
int y() const;
void setLeft( int pos );
void setTop( int pos );
void setRight( int pos );
void setBottom( int pos );
void setX( int x );
void setY( int y );
ePoint topLeft() const;
ePoint bottomRight() const;
ePoint topRight() const;
ePoint bottomLeft() const;
/* the sole intention of these functions
is to allow painting frames without
messing around with the coordinates.
they point to the last pixel included
in the rectangle (which means that 1 is
subtracted from the right and bottom
coordinates */
ePoint topLeft1() const;
ePoint bottomRight1() const;
ePoint topRight1() const;
ePoint bottomLeft1() const;
ePoint center() const;
void rect( int *x, int *y, int *w, int *h ) const;
void coords( int *x1, int *y1, int *x2, int *y2 ) const;
void moveTopLeft( const ePoint &p );
void moveBottomRight( const ePoint &p );
void moveTopRight( const ePoint &p );
void moveBottomLeft( const ePoint &p );
void moveCenter( const ePoint &p );
void moveBy( int dx, int dy )
{
x1 += dx;
y1 += dy;
x2 += dx;
y2 += dy;
}
void moveBy(ePoint r)
{
x1 += r.x();
y1 += r.y();
x2 += r.x();
y2 += r.y();
}
void setRect( int x, int y, int w, int h );
void setCoords( int x1, int y1, int x2, int y2 );
eSize size() const;
int width() const;
int height() const;
void setWidth( int w );
void setHeight( int h );
void setSize( const eSize &s );
eRect operator|(const eRect &r) const;
eRect operator&(const eRect &r) const;
eRect& operator|=(const eRect &r);
eRect& operator&=(const eRect &r);
bool contains( const ePoint &p) const;
bool contains( int x, int y) const;
bool contains( const eRect &r) const;
eRect unite( const eRect &r ) const;
eRect intersect( const eRect &r ) const;
bool intersects( const eRect &r ) const;
friend bool operator==( const eRect &, const eRect & );
friend bool operator!=( const eRect &, const eRect & );
static eRect emptyRect() { return eRect(0, 0, 0, 0); }
static eRect invalidRect() { return eRect(); }
void scale(int x_n, int x_d, int y_n, int y_d);
private:
int x1;
int y1;
int x2;
int y2;
};
bool operator==( const eRect &, const eRect & );
bool operator!=( const eRect &, const eRect & );
/*****************************************************************************
eRect inline member functions
*****************************************************************************/
inline eRect::eRect( int left, int top, int width, int height )
{
x1 = left;
y1 = top;
x2 = left+width;
y2 = top+height;
}
inline bool eRect::empty() const
{ return x1 >= x2 || y1 >= y2; }
inline bool eRect::valid() const
{ return x1 <= x2 && y1 <= y2; }
inline int eRect::left() const
{ return x1; }
inline int eRect::top() const
{ return y1; }
inline int eRect::right() const
{ return x2; }
inline int eRect::bottom() const
{ return y2; }
inline int &eRect::rLeft()
{ return x1; }
inline int & eRect::rTop()
{ return y1; }
inline int & eRect::rRight()
{ return x2; }
inline int & eRect::rBottom()
{ return y2; }
inline int eRect::x() const
{ return x1; }
inline int eRect::y() const
{ return y1; }
inline void eRect::setLeft( int pos )
{ x1 = pos; }
inline void eRect::setTop( int pos )
{ y1 = pos; }
inline void eRect::setRight( int pos )
{ x2 = pos; }
inline void eRect::setBottom( int pos )
{ y2 = pos; }
inline void eRect::setX( int x )
{ x1 = x; }
inline void eRect::setY( int y )
{ y1 = y; }
inline ePoint eRect::topLeft() const
{ return ePoint(x1, y1); }
inline ePoint eRect::bottomRight() const
{ return ePoint(x2, y2); }
inline ePoint eRect::topRight() const
{ return ePoint(x2, y1); }
inline ePoint eRect::bottomLeft() const
{ return ePoint(x1, y2); }
inline ePoint eRect::topLeft1() const
{ return ePoint(x1, y1); }
inline ePoint eRect::bottomRight1() const
{ return ePoint(x2-1, y2-1); }
inline ePoint eRect::topRight1() const
{ return ePoint(x2-1, y1); }
inline ePoint eRect::bottomLeft1() const
{ return ePoint(x1, y2-1); }
inline ePoint eRect::center() const
{ return ePoint((x1+x2)/2, (y1+y2)/2); }
inline int eRect::width() const
{ return x2 - x1; }
inline int eRect::height() const
{ return y2 - y1; }
inline eSize eRect::size() const
{ return eSize(x2-x1, y2-y1); }
inline bool eRect::contains( int x, int y) const
{
return (x >= x1) && (x < x2) && (y >= y1) && (y < y2);
}
#endif // eRect_H
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