98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
/*++
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Copyright (C) 1996-1999 Microsoft Corporation
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Module Name:
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intrvbar.h
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Abstract:
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Definition of the interval bar class used by the CTimeRange class.
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--*/
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#ifndef _INTRVBAR_H_
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#define _INTRVBAR_H_
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class CIntervalBar {
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friend LRESULT APIENTRY IntervalBarWndProc (
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HWND hWnd,
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UINT uiMsg,
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WPARAM wParam,
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LPARAM lParam
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);
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private:
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enum {
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ModeNone,
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ModeLeft,
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ModeRight,
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ModeCenter
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};
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HWND m_hWnd ;
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INT m_iBeginValue ; // user-supplied lowest range
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INT m_iEndValue ; // user-supplied highest range
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INT m_iStartValue ; // current start of selected interval
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INT m_iStopValue ; // current end of selected interval
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RECT m_rectBorder ;
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RECT m_rectLeftBk ;
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RECT m_rectLeftGrab ;
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RECT m_rectCenterGrab ;
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RECT m_rectRightGrab ;
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RECT m_rectRightBk ;
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HBRUSH m_hBrushBk ;
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POINTS m_ptsMouse ;
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INT m_iMode ; // who is being tracked?
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void NotifyChange ( void );
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BOOL GrabRect ( LPRECT lpRect );
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void DrawGrab (HDC hDC, LPRECT lprectGrab, BOOL bDown );
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INT ValueToPixel ( INT iValue );
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INT PixelToValue ( INT xPixel );
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void CalcPositions ( void );
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void Draw ( HDC hDC, LPRECT lprectUpdate );
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void MoveLeftRight ( BOOL bStart, BOOL bLeft, INT iMoveAmt );
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void StartGrab ( void );
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void EndGrab ( void );
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void Update ( void );
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BOOL OnKeyDown ( WPARAM wParam );
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void OnLButtonDown ( POINTS ptsMouse );
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void OnLButtonUp ( void );
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void OnMouseMove ( POINTS ptsMouse );
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public:
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CIntervalBar ( void );
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~CIntervalBar ( void );
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BOOL Init ( HWND hWndParent );
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HWND Window ( void ) { return m_hWnd; }
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void SetRange ( INT iBegin, INT iEnd );
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void SetStart ( INT iStart );
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void SetStop ( INT iStop );
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INT Start ( void ) { return m_iStartValue; }
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INT Stop ( void ) { return m_iStopValue; }
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INT XStart ( void ) { return m_rectLeftGrab.left; }
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INT XStop ( void ) { return m_rectRightGrab.right; }
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};
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typedef CIntervalBar *PCIntervalBar ;
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//==========================================================================//
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// Constants //
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//==========================================================================//
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#define ILN_SELCHANGED (WM_USER + 0x200)
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#endif
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