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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2003 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef COMMON_RECT_H
#define COMMON_RECT_H
#include "scummsys.h"
namespace ScummVM {
/*! @brief simple class for handling both 2D position and size
This small class is an helper for position and size values.
*/
class Point {
friend class Rect;
private:
int32 _x; //!< The horizontal part of the point
int32 _y; //!< The vertical part of the point
public:
Point() : _x(0), _y(0) {};
Point(const Point & p) : _x(p._x), _y(p._y) {};
explicit Point(int32 x, int32 y) : _x(x), _y(y) {};
Point & operator=(const Point & p) { _x = p._x; _y = p._y; return *this; };
bool operator==(const Point & p) const { return _x == p._x && _y == p._y; };
const int32 & getX() const { return _x; };
const int32 & getY() const { return _y; };
int32 & getX() { return _x; };
int32 & getY() { return _y; };
Point operator+(const Point & p) const { return Point(_x + p._x, _y+p._y); };
Point operator-(const Point & p) const { return Point(_x - p._x, _y-p._y); };
Point & operator+=(const Point & p) { _x += p._x; _y += p._y; return *this; };
Point & operator-=(const Point & p) { _x -= p._x; _y -= p._y; return *this; };
bool isOrigin() const { return _x == 0 && _y == 0; };
void set(int32 x, int32 y) { _x = x; _y = y; }
};
/*! @brief simple class for handling a rectangular zone.
This small class is an helper for rectangles.
It is mostly used by the blitter class.
*/
class Rect {
private:
Point _topLeft; //!< The point at the top left of the rectangle
Point _bottomRight; //!< The point at the bottom right of the rectangle
public:
Rect() : _topLeft(0, 0), _bottomRight(0,0) {}
Rect(int32 x, int32 y) : _topLeft(0, 0), _bottomRight(x, y) {}
Rect(int32 x1, int32 y1, int32 x2, int32 y2) : _topLeft(x1, y1), _bottomRight(x2, y2) {}
Point size() const { return (_bottomRight - _topLeft); };
int32 width() const { return size()._x; }
int32 height() const { return size()._y; }
int32 left() const { return _topLeft._x; }
int32 right() const { return _bottomRight._x; }
int32 top() const { return _topLeft._y; }
int32 bottom() const { return _bottomRight._y; }
const Point & topLeft() const { return _topLeft; }
const Point & bottomRight() const { return _bottomRight; }
/*! @brief check if given position is inside the rectangle
@param x the horizontal position to check
@param y the vertical position to check
@return true if the given position is inside the rectangle, false otherwise
*/
bool isInside(int32 x, int32 y) const {
return (_topLeft._x <= x) && (_bottomRight._x > x) && (_topLeft._y <= y) && (_bottomRight._y > y);
}
/*! @brief check if given point is inside the rectangle
@param p the point to check
@return true if the given point is inside the rectangle, false otherwise
*/
bool isInside(const Point & p) const {
return (_topLeft._x <= p._x) && (_bottomRight._x > p._x) && (_topLeft._y <= p._y) && (_bottomRight._y > p._y);
}
bool clip(Rect & r) const;
};
}; // End of namespace ScummVM
#endif
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