商业编程-源码-视图分割源代码 minsplit.zip

// MinSplitterWnd.cpp : implementation file // #include "stdafx.h" #include <afxpriv.h> // For AFX_SIZEPARENTPARAMS and AfxRepositionWindow #include "MinSplitterWnd.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif //============================================================================== // // Kludges because we don't have access to mfc\src. // //============================================================================== // From afximpl.h and auxdata.cpp // Note: afxData.cxBorder and afxData.cyBorder aren't used anymore #define CX_BORDER 1 #define CY_BORDER 1 struct _AFXDATA { int cxBorder2, cyBorder2; BOOL bWin4; // TRUE if Windows 4.0 BOOL bNotWin4; // TRUE if not Windows 4.0 _AFXDATA() // From auxdata.cpp { // Cache various target platform version information DWORD dwVersion = ::GetVersion(); bWin4 = (BYTE)dwVersion >= 4; bNotWin4 = 1 - bWin4; // for convenience // cxBorder2 and cyBorder are 2x borders for Win4 cxBorder2 = bWin4 ? CX_BORDER*2 : CX_BORDER; cyBorder2 = bWin4 ? CY_BORDER*2 : CY_BORDER; } } afxData; // From winsplit.cpp... // HitTest return values (values and spacing between values is important) enum HitTestValue { noHit = 0, vSplitterBox = 1, hSplitterBox = 2, bothSplitterBox = 3, // just for keyboard vSplitterBar1 = 101, vSplitterBar15 = 115, hSplitterBar1 = 201, hSplitterBar15 = 215, splitterIntersection1 = 301, splitterIntersection225 = 525 }; //============================================================================== // // End of Kludges. // //============================================================================== ///////////////////////////////////////////////////////////////////////////// // CMinSplitterWnd CMinSplitterWnd::CMinSplitterWnd() { } CMinSplitterWnd::~CMinSplitterWnd() { } BEGIN_MESSAGE_MAP(CMinSplitterWnd, CSplitterWnd) //{{AFX_MSG_MAP(CMinSplitterWnd) ON_WM_MOUSEMOVE() ON_WM_WINDOWPOSCHANGING() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMinSplitterWnd message handlers void CMinSplitterWnd::OnMouseMove(UINT nFlags, CPoint point) { if ( m_bTracking && GetCapture() == this ) { // Work out which panes are left or above the splitter (horiz and vert). bool bSizingCol = false; bool bSizingRow = false; int nCol; int nRow; if ( m_htTrack >= hSplitterBar1 && m_htTrack <= hSplitterBar15 ) { nCol = m_htTrack - hSplitterBar1; bSizingCol = true; } else if ( m_htTrack >= vSplitterBar1 && m_htTrack <= vSplitterBar15 ) { nRow = m_htTrack - vSplitterBar1; bSizingRow = true; } else if ( m_htTrack >= splitterIntersection1 && m_htTrack <= splitterIntersection225 ) { nCol = ( m_htTrack - splitterIntersection1 ) % 15; nRow = ( m_htTrack - splitterIntersection1 ) / 15; bSizingCol = true; bSizingRow = true; } // if // Get client rect for limit calculations. CRect rectClient; GetClientRect( rectClient ); point.Offset( m_ptTrackOffset ); // point is the upper right of hit detect // Limit row. if ( bSizingRow ) { int nLimit1 = m_cyBorder; // Start with top border. // If top splitter... if ( nRow == 0 ) { nLimit1 += m_pRowInfo[ 0 ].nMinSize; // ...just add first row minimum size. } // If pane above splitter at minimum size... else if ( m_pRowInfo[ nRow ].nCurSize == m_pRowInfo[ nRow ].nMinSize ) { for ( int i = 0; i < nRow; i++ ) { nLimit1 += m_pRowInfo[ i ].nCurSize; // ...add previous rows' sizes and splitters. nLimit1 += m_cySplitter; } // for nLimit1 += m_pRowInfo[ i ].nCurSize; } // Otherwise... else { for ( int i = 0; i < nRow; i++ ) { nLimit1 += m_pRowInfo[ i ].nMinSize; // ...add previous rows' minimum sizes and splitters. nLimit1 += m_cySplitter; } // for nLimit1 += m_pRowInfo[ i ].nMinSize; } // if int nLimit2 = rectClient.bottom; // Start with bottom. nLimit2 -= m_cyBorder; // Take off bottom border. // If bottom splitter... if ( nRow + 1 == m_nRows - 1 ) { nLimit2 -= m_pRowInfo[ nRow + 1 ].nMinSize; // ...just take off last row minimum size. } // Otherwise... else { for ( int i = m_nRows - 1; i > nRow + 1; i-- ) { nLimit2 -= m_pRowInfo[ i ].nMinSize; // ...take off following rows' minimum sizes and splitters. nLimit2 -= m_cySplitter; } // for nLimit2 -= m_pRowInfo[ i ].nMinSize; } // if nLimit2 -= m_cySplitter / 2; // Take off half a splitter. if ( point.y < nLimit1 + m_cySplitter / 2 - 2 ) { point.y = nLimit1 + m_cySplitter / 2 - 2; } // if if ( point.y > nLimit2 - m_cySplitter / 2 ) { point.y = nLimit2 - m_cySplitter / 2; } // if } // if // Limit column. if ( bSizingCol ) { int nLimit1 = 0;// = m_cxBorder; // Start with left border. // If left splitter... if ( nCol == 0 ) { nLimit1 += m_pColInfo[ 0 ].nMinSize; // ...just add first column minimum size. } // If pane left of splitter at minimum size... else if ( m_pColInfo[ nCol ].nCurSize == m_pColInfo[ nCol ].nMinSize ) { for ( int i = 0; i < nCol; i++ ) { nLimit1 += m_pColInfo[ i ].nCurSize; // ...add previous columns' sizes and splitters. nLimit1 += m_cxSplitter; } // for nLimit1 += m_pColInfo[ i ].nCurSize; } // Otherwise... else { for ( int i = 0; i < nCol; i++ ) { nLimit1 += m_pColInfo[ i ].nMinSize; // ...add previous columns' minimum sizes and splitters. nLimit1 += m_cxSplitter; } // for nLimit1 += m_pColInfo[ i ].nMinSize; // Minimum height of each column, } // if int nLimit2 = rectClient.right; // Start with right. nLimit2 -= m_cxBorder; // Take off right border, // If right splitter... if ( nCol + 1 == m_nCols - 1 ) { nLimit2 -= m_pColInfo[ nCol + 1 ].nMinSize; // ...just take off last column minimum size. } // Otherwise... else { for ( int i = m_nCols - 1; i > nCol + 1; i-- ) { nLimit2 -= m_pColInfo[ i ].nMinSize; // ...take off following columns' minimum sizes and splitters. nLimit2 -= m_cxSplitter; } // for nLimit2 -= m_pColInfo[ i ].nMinSize; } // if nLimit2 -= m_cxSplitter / 2; // Take off half a splitter, if ( point.x < nLimit1/* + m_cxSplitter / 2 - 2*/ ) { point.x = nLimit1 /*+ m_cxSplitter / 2 - 2*/; } // if if ( point.x > nLimit2 - m_cxSplitter / 2 ) { point.x = nLimit2 - m_cxSplitter / 2; } // if } // if // Restore offset 'cos CSplitterWnd::OnMouseMove will do it again. point.Offset( -m_ptTrackOffset ); // point is the upper right of hit detect } // if // Call base class. CSplitterWnd::OnMouseMove(nFlags, point); } int CMinSplitterWnd::GetMinClientWidth() { // If no columns, no width. if ( m_pColInfo == NULL ) { return 0; } // if // Min width is... int nMinWidth = m_cxBorder; // Left border, for ( int nCol = 0; nCol < m_nCols; nCol++ ) { nMinWidth += m_pColInfo[ nCol ].nMinSize; // Minimum width of each column, if ( nCol < m_nCols - 1 ) { nMinWidth += m_cxSplitter; // Width of splitter for each column except the last, } // if } // for nMinWidth += m_cxBorder; // Right border. return nMinWidth; } int CMinSplitterWnd::GetMinClientHeight() { // If no rows, no height. if ( m_pRowInfo == NULL ) { return 0; } // if // Min height is... int nMinHeight = m_cyBorder; // Top border, for ( int nRow =