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

#ifndef PG_SCROLLWIDGET_H
#define PG_SCROLLWIDGET_H

#include "pgthemewidget.h"
#include "pgscrollbar.h"
#include "pgscrollarea.h"


class DECLSPEC PG_ScrollWidget : public PG_ThemeWidget  {
public:

        enum {
            IDWIDGETLIST_VSCROLL = PG_WIDGETID_INTERNAL + 10, IDWIDGETLIST_HSCROLL
        };

        PG_ScrollWidget(PG_Widget* parent, const PG_Rect& r = PG_Rect::null, const std::string& style="ScrollWidget");

        ~PG_ScrollWidget();

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

        void EnableScrollBar(bool enable, PG_ScrollBar::ScrollDirection direction = PG_ScrollBar::VERTICAL);

        void ScrollTo( int x, int y);

        void ScrollToWidget(PG_Widget* widget, bool bVertical = true);

        Uint16 GetListHeight();

        Uint16 GetListWidth();

        Uint16 GetWidgetCount();

        PG_Widget* GetFirstInList();

        virtual void DeleteAll();

        virtual void RemoveAll();

        void AddChild(PG_Widget* child);

   void SetLineSize( int linesize );
   int GetLineSize();

        void SetShiftOnRemove(bool shiftx, bool shifty);

        Uint16 GetScrollPosX();

        Uint16 GetScrollPosY();

        void SetAutoResize(bool bRemove, bool bAdd);

        PG_ScrollArea::SignalAreaChangedHeight sigAreaChangedHeight;

        PG_ScrollArea::SignalAreaChangedWidth sigAreaChangedWidth;

protected:

        void eventSizeWidget(Uint16 w, Uint16 h);

   bool eventMouseButtonDown(const SDL_MouseButtonEvent* button);
   
        bool handleScrollPos(PG_ScrollBar* widget, long data);

        bool handleScrollTrack(PG_ScrollBar* widget, long data);

        bool handleAreaChangedHeight(PG_ScrollArea* area, Uint16 h);

        bool handleAreaChangedWidth(PG_ScrollArea* area, Uint16 w);

        PG_ScrollBar* my_objVerticalScrollbar;
        PG_ScrollBar* my_objHorizontalScrollbar;
        PG_ScrollArea* my_scrollarea;

        int my_widthScrollbar;
        int my_heightHorizontalScrollbar;

        bool my_enableVerticalScrollbar;
        bool my_enableHorizontalScrollbar;
        int my_scrollLineSize;

        void CheckScrollBars();

private:

        PG_ScrollWidget(const PG_ScrollWidget&);

        PG_ScrollWidget& operator=(const PG_ScrollWidget&);

        DLLLOCAL void CalcScrollbarVisibility();
        DLLLOCAL void RecalcPositions(bool bV, bool bH);
};

#endif // PG_SCROLLWIDGET_H

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