RmMFCScrollWnd.h

//=================================================================================================//
// filename: RmMFCColorSlider.h                                                                    //
//                                                                                                 //
//           ATI Research, Inc.                                                                    //
//           3D Application Research Group                                                         //
//                                                                                                 //
// description: Definition of the CRmScrollWnd class.                                              //
//                                                                                                 //
//=================================================================================================//
//   (C) 2004 ATI Research, Inc.  All rights reserved.                                             //
//=================================================================================================//

#ifndef _RM_MFC_UTILITIES_SCROLL_WND_H_
#define _RM_MFC_UTILITIES_SCROLL_WND_H_

#include <MFCUtilities/RmMFCTypes.h>

//=================================================================================================//
// Class:         CRmScrollFrame                                                                   //
//                                                                                                 //
// Description:   Provides frame window for an attached child window                               //
//=================================================================================================//
class CRmScrollFrame : public CWnd
{
public: // Public member functions
            
        // Generated message map functions
        //{{AFX_MSG(CRmScrollFrame)
   afx_msg LRESULT OnChildResize( WPARAM wParam, LPARAM lParam );
   afx_msg LRESULT OnChildScroll( WPARAM wParam, LPARAM lParam );
   afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
   afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
        //}}AFX_MSG
   
   DECLARE_MESSAGE_MAP()
   
}; // end class CRmScrollFrame : public CWnd

//=================================================================================================//
// Class:         CRmScrollWnd                                                                     //
//                                                                                                 //
// Description:   Provides scrolling frame window for an attached child window                     //
//=================================================================================================//
class RMMFCUTIL_API CRmScrollWnd : public CWnd
{
public: // Public type definitions

   enum CRmScrollWndControlIDs
   {
      HorizontalScrollBarID = 0x123,
      VerticalScrollBarID,
      
   }; // end enum CRmScrollWndControlIDs

public: // Public member functions

   // Default construction / destruction
   CRmScrollWnd();
   virtual ~CRmScrollWnd();
   
   // ScrollWnd Create function   
   void CreateScrollWnd(   HWND hParentWnd,
                           RECT& rect,
                           DWORD dwStyle = WS_CHILD | WS_VISIBLE,
                           bool bCenterChild = false );
        
   // Attach / Detach Child window
   bool  AttachScrollChild( CWnd *pChildWnd );
   CWnd* DetachScrollChild();
   CWnd* GetScrollChild() { return( m_pScrollChildWnd ); }
   
   // Scroll adjustment and helper functions
   void AdjustScrollWindow();
   
   static void CalculateScrollBarRequirements(  CRect *pFrameRect,
                                                CRect *pChildRect,
                                                bool &bNeedHorizontalScrollBar,
                                                bool &bNeedVerticalScrollBar ) ;
   
        // Generated message map functions
        //{{AFX_MSG(CRmScrollWnd)
   afx_msg void      OnSize(UINT nType, int cx, int cy);
   afx_msg void      OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
   afx_msg void      OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
   afx_msg LRESULT   OnChildResize( WPARAM wParam, LPARAM lParam );
   afx_msg LRESULT   OnChildScroll( WPARAM wParam, LPARAM lParam );
   afx_msg void      OnDestroy();
   afx_msg BOOL      OnMouseWheel(UINT nFlags, short zDelta, CPoint pt);
        //}}AFX_MSG
   
   DECLARE_MESSAGE_MAP()
   
protected: // protected member variables

   // Horizontal and Vertical Scroll bars
   CScrollBar  m_horizontalScrollBar;
   CScrollBar  m_verticalScrollBar;
   
   // Frame / Child windows
   CRmScrollFrame m_frameWnd;
   CWnd           *m_pScrollChildWnd;
   bool           m_bAdjustingScrollWindow;
   bool           m_bCenterChild;
   
}; // end class CRmScrollWnd : public CWnd

#endif // !defined( _RM_MFC_UTILITIES_SCROLL_WND_H_ )

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