pgrect.h

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/*
    ParaGUI - crossplatform widgetset
    Copyright (C) 2000,2001,2002  Alexander Pipelka
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    Alexander Pipelka
    pipelka@teleweb.at
 
    Last Update:      $Author: mbickel $
    Update Date:      $Date: 2007-04-13 16:15:57 $
    Source File:      $Source: /home/cvspsrv/cvsroot/games/asc/source/libs/paragui/include/pgrect.h,v $
    CVS/RCS Revision: $Revision: 1.2 $
    Status:           $State: Exp $
*/

#ifndef PG_RECT_H
#define PG_RECT_H

#include "pgpoint.h"

class PG_Widget;

class DECLSPEC PG_Rect : public SDL_Rect {
public:

        PG_Rect(Sint16 x = 0, Sint16 y = 0, Uint16 w = 0, Uint16 h = 0);

        PG_Rect(const PG_Rect& src);

        PG_Rect(const SDL_Rect& src);

        virtual ~PG_Rect();

        inline void SetRect(Sint16 nx, Sint16 ny, Uint16 nw, Uint16 nh) {
                x = nx;
                y = ny;
                w = nw;
                h = nh;
        }

        PG_Rect& operator =(const SDL_Rect& src);

        PG_Rect& operator =(const PG_Rect& src);

        PG_Rect operator / ( const PG_Rect& b) const ;

        inline bool operator ==(const PG_Rect& r) const {
                return (x == r.x) && (y == r.y) && (r.w == w) && (r.h == h);
        }

        inline bool operator !=(const PG_Rect& r) const {
                return !((x == r.x) && (y == r.y) && (r.w == w) && (r.h == h));
        }
        inline static bool IsInside(const PG_Point& p, PG_Rect& r) {
                return r.IsInside(p);
        }

        inline bool IsInside(const PG_Point& p) const {
                return ( (x <= p.x) && (p.x <= x + w) && (y <= p.y) && (p.y <= y + h) );
        }

        static PG_Rect IntersectRect(const PG_Rect& p, const PG_Rect& c);

        PG_Rect IntersectRect(const PG_Rect& p) const;

        inline Uint16 Width() const {
                return w;
        }

        inline Uint16 Height() const {
                return h;
        }

        inline bool IsNull() const {
                return (!Width() && !Height());
        }


        inline bool OverlapRect(const PG_Rect& p, const PG_Rect& c) const {
                return !( (p.x + p.w < c.x) || (p.x > c.x + c.w) || (p.y + p.h < c.y) || (p.y > c.y + c.h)  || (p.IntersectRect(c).IsNull()) );
        }


        inline bool OverlapRect(const PG_Rect& p) const {
                return OverlapRect(p, *this);
        }


        inline bool OverlapRect(PG_Rect* p) {
                return OverlapRect(*p, *this);
        }

        inline PG_Widget* next() {
                return my_next;
        }

        inline PG_Widget* prev() {
                return my_prev;
        }

        Sint16& my_xpos;

        Sint16& my_ypos;

        Uint16& my_width;

        Uint16& my_height;

        Uint32 index;

        static PG_Rect null;

protected:

        PG_Widget* my_next;

        PG_Widget* my_prev;

        friend class PG_RectList;
};

#endif  // PG_RECT_H

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