wg_scrollbar.h

// wg_scrollbar.h
//
// CScrollBar interface
//
//
// Copyright (c) 2002-2004 Rob Wiskow
// rob-dev@boxedchaos.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//


#ifndef _WG_SCROLLBAR_H_
#define _WG_SCROLLBAR_H_

#include "wg_range_control.h"
#include "wg_painter.h"
#include "wg_button.h"


namespace wGui
{


class CScrollBar : public CRangeControl<int>
{
public:
     enum EScrollBarType
     {
          VERTICAL,  
          HORIZONTAL  
     };

     CScrollBar(const CRect& WindowRect, CWindow* pParent, EScrollBarType ScrollBarType);

     virtual ~CScrollBar(void);

     virtual void SetJumpAmount(int iJumpAmount) { m_iJumpAmount = iJumpAmount; }

     virtual int GetJumpAmount(void) const { return m_iJumpAmount; }


     // CRangeControl overrides
     virtual void SetValue(int iValue, bool bRedraw = true);


     // CWindow overrides
     virtual void Draw(void) const;

     virtual void SetWindowRect(const CRect& WindowRect);

     virtual void MoveWindow(const CPoint& MoveDistance);

     virtual bool OnMouseButtonDown(CPoint Point, unsigned int Button);


     // CMessageClient overrides
     virtual bool HandleMessage(CMessage* pMessage);


protected:
     virtual void RepositionThumb(void);

     EScrollBarType m_ScrollBarType;  
     int m_iJumpAmount;  
     CPictureButton* m_pBtnUpLeft;  
     CPictureButton* m_pBtnDownRight;  
     CRect m_ThumbRect;  
     bool m_bDragging;  


private:
     void operator=(CScrollBar) { }  
};

}


#include "unit_tests/wg_scrollbar_unittests.h"

#endif  // _WG_SCROLLBAR_H_

---