187 lines
5.4 KiB
C++
187 lines
5.4 KiB
C++
/*******************************************************************************
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*
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* rowview.h
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*
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* interface of the CRowView class and CRowViewHeaderBar class
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*
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* Modified from the Microsoft Foundation Classes C++ library.
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* Copyright (C) 1992 Microsoft Corporation
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* All rights reserved.
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*
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* This class implements the behavior of a scrolling view that presents
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* multiple rows of fixed-height data. A row view is similar to an
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* owner-draw listbox in its visual behavior; but unlike listboxes,
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* a row view has all of the benefits of a view (as well as scroll view),
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* including perhaps most importantly printing and print preview.
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*
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* additional copyright notice: Copyright 1995, Citrix Systems Inc.
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*
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* Citrix modifications include optional horizontal scrolling header bar
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* (derived from MFC CStatusBar class) and horizontal scrolling keyboard
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* control.
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*
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* $Author: butchd $ Butch Davis
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*
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* $Log: N:\NT\PRIVATE\UTILS\CITRIX\WINUTILS\COMMON\VCS\ROWVIEW.H $
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*
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* Rev 1.1 18 Jul 1995 06:50:16 butchd
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* Scrolling fix for Windows95 / MFC 3.0
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*
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* Rev 1.0 01 Mar 1995 10:54:50 butchd
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* Initial revision.
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*
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* Rev 1.0 02 Aug 1994 18:18:34 butchd
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* (Initial revision: was duplicated in each app directory).
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*
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*******************************************************************************/
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#define IDW_HEADER_BAR 100
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////////////////////////////////////////////////////////////////////////////////
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// CRowViewHeaderBar class
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//
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class CRowViewHeaderBar : public CStatusBar
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{
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DECLARE_DYNAMIC(CRowViewHeaderBar)
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/*
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* Member variables.
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*/
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public:
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CView * m_pView;
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/*
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* Implementation
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*/
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public:
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CRowViewHeaderBar();
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virtual ~CRowViewHeaderBar();
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/*
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* Overrides of MFC CStatusBar class
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*/
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protected:
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virtual void DoPaint(CDC* pDC);
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/*
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* Message map / commands.
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*/
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protected:
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//{{AFX_MSG(CRowViewHeaderBar)
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#if _MFC_VER >= 0x400
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afx_msg void OnPaint();
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#endif
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//}}AFX_MSG
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DECLARE_MESSAGE_MAP()
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}; // end CRowViewHeaderBar class interface
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// CRowView class
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//
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class CRowView : public CScrollView
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{
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DECLARE_DYNAMIC(CRowView)
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/*
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* Member variables.
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*/
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protected:
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int m_nRowWidth; // width of row in current device units
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int m_nRowHeight; // height of row in current device untis
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int m_nPrevSelectedRow; // index of the most recently selected row
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int m_nPrevRowCount; // most recent row count, before update
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int m_nPageScrollRows; // # rows to PageUp/PageDown scroll (>=1).
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int m_nRowsPerPrintedPage; // how many rows fit on a printed page
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BOOL m_bThumbTrack; // Flag to handle SB_THUMBTRACK or not.
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CRowViewHeaderBar * m_pHeaderBar; // Optional header bar.
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/*
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* Implementation
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*/
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public:
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CRowView();
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protected:
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virtual ~CRowView();
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BOOL CreateHeaderBar();
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/*
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* Mandantory overridables (must be overridden in the CRowView derived class)
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*/
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protected:
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virtual void GetRowWidthHeight( CDC* pDC, int& nRowWidth,
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int& nRowHeight ) = 0;
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virtual int GetActiveRow() = 0;
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virtual int GetRowCount() = 0;
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virtual void OnDrawRow( CDC* pDC, int nRow, int y, BOOL bSelected ) = 0;
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virtual void ChangeSelectionNextRow( BOOL bNext ) = 0;
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virtual void ChangeSelectionToRow( int nRow ) = 0;
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/*
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* Optional overridables (must be overridden in the CRowView derived class if
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* a header bar is desired).
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*/
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public:
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virtual void OnDrawHeaderBar( CDC* pDC, int y ) = 0;
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/*
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* Optional overridables (may be overridden in the CRowView derived class)
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*/
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public:
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virtual void ResetHeaderBar();
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/*
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* Overrides of MFC CScrollView class
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*/
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public:
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void OnScroll(int nBar, UINT nSBCode, UINT nPos);
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/*
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* Overrides of MFC CView class
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*/
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void OnInitialUpdate();
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virtual void OnPrepareDC( CDC* pDC, CPrintInfo* pInfo = NULL );
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virtual void OnDraw( CDC* pDC );
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virtual BOOL OnPreparePrinting( CPrintInfo* pInfo );
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virtual void OnBeginPrinting( CDC* pDC, CPrintInfo* pInfo );
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virtual void OnPrint( CDC* pDC, CPrintInfo* pInfo );
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/*
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* Operations
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*/
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protected:
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virtual void UpdateRow( int nInvalidRow );
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BOOL IsScrollingNeeded( int nBar );
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#ifndef MFC300
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int GetScrollLimit( int nBar );
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#endif
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virtual void CalculateRowMetrics( CDC* pDC );
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virtual void UpdateScrollSizes();
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virtual int RowToYPos( int nRow );
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virtual CRect RowToWndRect( CDC* pDC, int nRow );
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virtual int LastViewableRow();
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virtual void RectLPtoRowRange( const CRect& rectLP,
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int& nFirstRow,
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int& nLastRow,
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BOOL bIncludePartiallyShownRows );
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/*
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* Message map / commands
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*/
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protected:
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//{{AFX_MSG(CRowView)
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afx_msg void OnKeyDown( UINT nChar, UINT nRepCnt, UINT nFlags );
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afx_msg void OnSize( UINT nType, int cx, int cy );
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afx_msg void OnLButtonDown( UINT nFlags, CPoint point );
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afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
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afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
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afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
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//}}AFX_MSG
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DECLARE_MESSAGE_MAP()
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}; // end CRowView class interface
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////////////////////////////////////////////////////////////////////////////////
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