pgscrollbar.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/pgscrollbar.h,v $
    CVS/RCS Revision: $Revision: 1.2 $
    Status:           $State: Exp $
*/

#ifndef PG_SCROLLBAR_H
#define PG_SCROLLBAR_H

#include "pgthemewidget.h"
#include "pgbutton.h"

class DECLSPEC PG_ScrollBar : public PG_ThemeWidget {

protected:

#ifndef DOXYGEN_SKIP
class ScrollButton : public PG_Button {
        public:

                ScrollButton(PG_ScrollBar* parent, const PG_Rect& r = PG_Rect::null);
                virtual ~ScrollButton();

                void SetTickMode(bool on);

        protected:

                bool eventMouseButtonDown(const SDL_MouseButtonEvent* button);
                bool eventMouseMotion(const SDL_MouseMotionEvent* motion);
                PG_ScrollBar* GetParent();
                bool eventMouseButtonUp(const SDL_MouseButtonEvent* button);
                int GetPosFromPoint(PG_Point p);

        private:

                PG_Point offset;

                bool my_tickMode;

        };
#endif          // DOXYGEN_SKIP


public:

        typedef enum {
            VERTICAL,   
            HORIZONTAL  
        } ScrollDirection;

        enum {
            IDSCROLLBAR_UP = PG_WIDGETID_INTERNAL + 1,          
            IDSCROLLBAR_DOWN = PG_WIDGETID_INTERNAL + 2,        
            IDSCROLLBAR_LEFT = PG_WIDGETID_INTERNAL + 3,                
            IDSCROLLBAR_RIGHT = PG_WIDGETID_INTERNAL + 4,       
            IDSCROLLBAR_DRAG = PG_WIDGETID_INTERNAL + 5         
        };

        template<class datatype>
class SignalScrollPos : public PG_Signal2<PG_ScrollBar*, datatype> {}
        ;
        template<class datatype>
class SignalScrollTrack : public PG_Signal2<PG_ScrollBar*, datatype> {}
        ;

        PG_ScrollBar(PG_Widget* parent, const PG_Rect& r = PG_Rect::null, ScrollDirection direction = VERTICAL, int id = -1, const std::string& style="Scrollbar");

        virtual ~PG_ScrollBar();

        void LoadThemeStyle(const std::string& widgettype);

        void SetPosition(int pos);

        int GetPosition();

        void SetRange(Uint32 min, Uint32 max);

        int GetMinRange();

        int GetMaxRange();

        void SetLineSize(int ls);
   int  GetLineSize();

        void SetPageSize(int ps);

   
        SignalScrollPos<long> sigScrollPos;
        SignalScrollTrack<long> sigScrollTrack;

protected:

        void eventSizeWidget(Uint16 w, Uint16 h);

        bool eventMouseMotion(const SDL_MouseMotionEvent* motion);

        bool eventMouseButtonDown(const SDL_MouseButtonEvent* button);

        virtual bool handleButtonClick(PG_Button* button);

        bool eventMouseButtonUp(const SDL_MouseButtonEvent* button);

        int scroll_min;

        int scroll_max;

        int scroll_current;

        int my_linesize;

        int my_pagesize;

        PG_Button* scrollbutton[2];

        ScrollButton* dragbutton;

        PG_Rect position[4];

        ScrollDirection sb_direction;

        virtual void RecalcPositions();

        friend class ScrollButton;

private:

        PG_ScrollBar(const PG_ScrollBar&);

        PG_ScrollBar& operator=(PG_ScrollBar&);

};

#endif // PG_SCROLLBAR_H

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