#if !defined(AFX_LINENUMBEREDIT_H__CAB7A465_709C_42B8_80D0_2B0AF6D25AD4__INCLUDED_) #define AFX_LINENUMBEREDIT_H__CAB7A465_709C_42B8_80D0_2B0AF6D25AD4__INCLUDED_ ///////////////////////////////////////////////////////////////////////////// // CLineNumberStatic window class CLineNumberStatic : public CStatic { // Construction/destruction public: CLineNumberStatic(); virtual ~CLineNumberStatic(); // Operations public: void SetFgColor( COLORREF col, BOOL redraw ); void SetBgColor( COLORREF col, BOOL redraw ); void SetTopAndBottom( int topline, int bottomline ); void SetTopMargin( int topmargin ); void SetLineNumberFormat( CString format ); protected: afx_msg BOOL OnEraseBkgnd(CDC* pDC); afx_msg void OnPaint(); afx_msg void OnLButtonDown( UINT nFlags, CPoint point ); DECLARE_MESSAGE_MAP() private: // Attributes COLORREF m_fgcol; COLORREF m_bgcol; CString m_format; int m_topmargin; // Current top margin int m_topline; // Current top line number int m_bottomline; // Current bottom line number }; ///////////////////////////////////////////////////////////////////////////// // CLineNumberEdit window class CLineNumberEdit : public CEdit { // Construction/destruction public: CLineNumberEdit(); virtual ~CLineNumberEdit(); // Operations public: void SetMarginForegroundColor( COLORREF col, BOOL redraw = TRUE, BOOL bEnabled = TRUE ); void SetMarginBackgroundColor( COLORREF col, BOOL redraw = TRUE, BOOL bEnabled = TRUE ); void SetLineNumberFormat( CString format ); void SetLineNumberRange( UINT nMin, UINT nMax = 0 ); void UseSystemColours( BOOL bUseEnabled = TRUE, BOOL bUseDisabled = TRUE ); protected: virtual void PreSubclassWindow(); virtual afx_msg void OnEnable( BOOL bEnable ); virtual afx_msg void OnSysColorChange(); virtual afx_msg void OnChange(); virtual afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar); virtual afx_msg void OnVscroll(); virtual afx_msg void OnSize(UINT nType, int cx, int cy); virtual afx_msg LRESULT OnSetFont(WPARAM wParam, LPARAM lParam); // Maps to WM_SETFONT virtual afx_msg LRESULT OnSetText(WPARAM wParam, LPARAM lParam); // Maps to WM_SETTEXT virtual afx_msg LRESULT OnLineScroll(WPARAM wParam, LPARAM lParam); // Maps to EM_LINESCROLL virtual afx_msg LRESULT OnSelectLine(WPARAM wParam, LPARAM lParam); DECLARE_MESSAGE_MAP() private: void Prepare(); int CalcLineNumberWidth(); void UpdateTopAndBottom(); // Method to set window colour only void SetWindowColour( BOOL bEnable = TRUE ); // Attributes BOOL m_bUseEnabledSystemColours; COLORREF m_EnabledFgCol; COLORREF m_EnabledBgCol; BOOL m_bUseDisabledSystemColours; COLORREF m_DisabledFgCol; COLORREF m_DisabledBgCol; CLineNumberStatic m_line; CSize m_zero; int m_maxval; CString m_format; int m_LineDelta; // Introduced to provide an offset to the first line number }; #endif // !defined(AFX_LINENUMBEREDIT_H__CAB7A465_709C_42B8_80D0_2B0AF6D25AD4__INCLUDED_) //.cpp文件 /* ========================================================================== CLineNumberEdit Author : Johan Rosengren, Abstrakt Mekanik AB Date : 2004-03-09 Purpose : CLineNumberEdit is a CEdit-derived class that displays line numbers to the left of the text. Description : The class uses the edit rect to make space for the line numbers. The line numbers are relized through a special CStatic-derived class, CLineNumberStatic. As soon as the text is updated, the CLineNumberStatic is updated as well. Usage : The control can be dynamically created, or created from a dialog template. The formatting string for the line numbers can be set by calling SetLineNumberFormat (the same format string as for CString::Format). By calling SetMarginForegroundColor or SetMarginBackgroundColor the fore- and background colors for the line number display is set. ======================================================================== Update : Keith Bowes Date : 2004-04-13 Purpose : 1. To allow CLineNumberEdit to properly change colour when Enabled/Disabled or when system colours change. Changing system colours only has a noticable effect when a scheme such as Marine or Plum is chosen. 2. To allow a line number delta to be applied to the first line number so the index does not have to start at zero. 3. To allow a max value to be specified to stop the line count and to allow smarter size formatting. Description : 1. Added OnEnable and OnSysColorChange to detect when a colour change is required. This allows the line number area and CEdit area to update colours properly. Added colour ref variables to hold enabled/disabled states of the background/foreground colours. In an attempt to allow previous functionality to take precedence, if the colours are changed explicitly, the system colours are no longer queried. 2. Added m_LineDelta, applied when line numbers are formatted. 3. Using m_maxval when > 0 to limit the max values and when formatting colomn width. JRO: Added m_lineDelta as well. Usage : 1. Default behaviour is to change colours to reflect CEdit. manually changing the colour will cause the colours to only change to the specified colours. 2. SetLineNumberRange sets both min and max values. 3. SetLineNumberRange sets both min and max values. Comments : - Perhaps line values should be stored as UINT's as negative values may have unexpected results. - CLineNumberEdit::m_format creates a duplicate of CLineNumberStatic::m_format, is this needed? JRO: Even though the the two classes are thightly coupled, this duplication of data makes it easier to decouple them. A small matter, but code reuse is Politically Correct, and as such A Desirable Feature. - Added options could allow different system colours to be chosen and updated as system attributes are changed. - if m_maxval is exceeded in the edit box, new lines are added without line numbers. This might not be the desired behaviour. JRO: I think this is rather nifty, actually. If I, as a developer, sets the max number of lines to be numbered, I also expect this to be the case :-))) - It's not spelled wrong, just differently. ;0) ======================================================================== Update : Johan Rosengren Date : 2004-04-14 Purpose : 1. Allow deriving of CLineNumberEdit. Description : 1. Made the message handlers virtual. Usage : 1. Declare message handlers as virtual in derived classes. Note that CLineNumberEdit is not built to be derived from, however. ======================================================================== Update : Keith Bowes Date : 2004-04-22 Purpose : To allow processing of WM_LINESCROLL messages. Description : Added OnLineScroll to handle the message. Usage : Now will call UpdateTopAndBottom if the message is received. ======================================================================== Update : Johan Rosengren Date : 2004-05-02 Purpose : Select complete line when a line-number is clicked Description : Added registered user message, sent when the line- number static is clicked. Usage : See urm_SELECTLINE in the code. ========================================================================*/ #include "stdafx.h" #include "LineNumberEdit.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif // Registered message to allow selection of complete // lines by clicking the line number UINT urm_SELECTLINE = ::RegisterWindowMessage( "_LINE_NUMBER_EDIT_SELECTLINE_" ); ///////////////////////////////////////////////////////////////////////////// // CLineNumberEdit CLineNumberEdit::CLineNumberEdit() /* ============================================================ Function : CLineNumberEdit::CLineNumberEdit Description : constructor Return : void Parameters : none Usage : ============================================================*/ { m_hWnd = NULL; m_line.m_hWnd = NULL; m_zero.cx = 0; m_zero.cy = 0; m_format = _T( "%05i" ); m_LineDelta = 0; // Could default m_maxval to 99,999, but may cause problems // if m_format is changed and m_maxval is not... m_maxval = 0; // Setting up so by defult the original hard-coded colour // scheme is used when enabled and the system colours are // used when disabled. m_bUseEnabledSystemColours = FALSE; m_bUseDisabledSystemColours = TRUE; m_EnabledFgCol = RGB( 0, 0, 0 ); m_EnabledBgCol = RGB( 255, 255, 248 ); m_DisabledFgCol = GetSysColor( COLOR_GRAYTEXT ); m_DisabledBgCol = GetSysColor( COLOR_3DFACE ); SetWindowColour(); } CLineNumberEdit::~CLineNumberEdit() /* ============================================================ Function : CLineNumberEdit::~CLineNumberEdit Description : destructor Return : void Parameters : none Usage : ============================================================*/ { } BEGIN_MESSAGE_MAP(CLineNumberEdit, CEdit) ON_CONTROL_REFLECT(EN_CHANGE, OnChange) ON_WM_VSCROLL() ON_CONTROL_REFLECT(EN_VSCROLL, OnVscroll) ON_MESSAGE(WM_SETFONT, OnSetFont) ON_WM_SIZE() ON_MESSAGE(WM_SETTEXT, OnSetText) ON_WM_SYSCOLORCHANGE() ON_WM_ENABLE() ON_MESSAGE(EM_LINESCROLL, OnLineScroll) ON_REGISTERED_MESSAGE(urm_SELECTLINE, OnSelectLine) END_MESSAGE_MAP() void CLineNumberEdit::PreSubclassWindow() /* ============================================================ Function : CLineNumberEdit::PreSubclassWindow Description : This function is called before the control is subclassed for a control on a dialog template, and during creation for dynamically created controls. Return : void Parameters : none Usage : Called from MFC ============================================================*/ { // Unfortunately, we can't change to ES_MULTILINE // during run-time. ASSERT( GetStyle() & ES_MULTILINE ); // Creating the line number control SetLineNumberFormat( m_format ); } ///////////////////////////////////////////////////////////////////////////// // CLineNumberEdit message handlers void CLineNumberEdit::OnSysColorChange() /* ============================================================ Function : CLineNumberEdit::OnSysColorChange Description : Handles WM_SYSCOLORCHANGE. User has changed the system colours, want to refresh. Return : void Parameters : void Usage : Called from Windows ============================================================*/ { CEdit::OnSysColorChange(); // update the CStatic with the new colours SetWindowColour( IsWindowEnabled() ); } LRESULT CLineNumberEdit::OnSetText( WPARAM wParam, LPARAM lParam ) /* ============================================================ Function : CLineNumberEdit::OnSetText Description : Handles WM_SETTEXT. We must update the line numbers in the line number control as well. Return : LRESULT - From Def proc Parameters : WPARAM wParam - From Windows LPARAM lParam - From Windows Usage : Called from Windows ============================================================*/ { // Default processing LRESULT retval = DefWindowProc( WM_SETTEXT, wParam, lParam ); UpdateTopAndBottom(); return retval; } void CLineNumberEdit::OnChange() /* ============================================================ Function : CLineNumberEdit::OnChange Description : Mapped to EN_CHANGE. We must handle EN_CHANGE to let the line-number control reflect changes to the edit box content. Return : void Parameters : none Usage : Called from Windows ============================================================*/ { UpdateTopAndBottom(); } void CLineNumberEdit::OnVscroll() /* ============================================================ Function : CLineNumberEdit::OnVscroll Description : Mapped to EN_VSCROLL. We update the line numbers in the line number control Return : void Parameters : none Usage : Called from Windows ============================================================*/ { UpdateTopAndBottom(); } void CLineNumberEdit::OnVScroll( UINT nSBCode, UINT nPos, CScrollBar* pScrollBar ) /* ============================================================ Function : CLineNumberEdit::OnVScroll Description : Handles WM_VSCROLL. We handle WM_VSCROLL in addition to the notification EN_VSCROLL, to handle scrollbar dragging as well Return : void Parameters : UINT nSBCode - From Windows UINT nPos - From Windows CScrollBar* pScrollBar - From Windows Usage : Called from Windows ============================================================*/ { CEdit::OnVScroll( nSBCode, nPos, pScrollBar ); UpdateTopAndBottom(); } LRESULT CLineNumberEdit::OnLineScroll( WPARAM wParam, LPARAM lParam ) /* ============================================================ Function : CLineNumberEdit::OnLineScroll Description : Mapped to EM_LINESCROLL. We update the line numbers in the line number control. Return : void Parameters : none Usage : Called from Windows ============================================================*/ { // Default processing LRESULT retval = DefWindowProc( EM_LINESCROLL, wParam, lParam ); UpdateTopAndBottom(); return retval; } LRESULT CLineNumberEdit::OnSetFont( WPARAM wParam, LPARAM lParam ) /* ============================================================ Function : CLineNumberEdit::OnSetFont Description : Mapped to WM_SETFONT. We must recalculate the line number control size as well. Return : LRESULT - Always 0 Parameters : WPARAM wParam - From Windows LPARAM lParam - From Windows Usage : Called from Windows ============================================================*/ { DefWindowProc( WM_SETFONT, wParam, lParam ); // We resize the line-number // field Prepare(); return 0; } void CLineNumberEdit::OnSize( UINT nType, int cx, int cy ) /* ============================================================ Function : CLineNumberEdit::OnSize Description : Handles WM_SIZE. Recalculates the line number control size as well. Return : void Parameters : UINT nType - From Windows int cx - From Windows int cy - From Windows Usage : Called from Windows ============================================================*/ { CEdit::OnSize( nType, cx, cy ); // If we have the line-number // control, it must be resized // as well. if( m_line.m_hWnd ) Prepare(); } void CLineNumberEdit::OnEnable( BOOL bEnable ) /* ============================================================ Function : CLineNumberEdit::OnEnable Description : Handles WM_ENABLE. Calls to set colours. Return : void Parameters : BOOL bEnable - From Windows Usage : Called from Windows. ============================================================*/ { CEdit::OnEnable( bEnable ); SetWindowColour( bEnable ); } LRESULT CLineNumberEdit::OnSelectLine(WPARAM wParam, LPARAM /*lParam*/ ) /* ============================================================ Function : CLineNumberEdit::OnSelectLine Description : Handler for the urm_SELECTLINE registered message. Will select the line in wParam. Return : LRESULT - Not used Parameters : WPARAM wParam - The line to select LPARAM lParam - Not used Usage : Called from MFC. Use SendMessage( urm_SELECTLINE, line ) from code. ============================================================*/ { // Calc start and end position of the line int lineno = wParam + GetScrollPos( SB_VERT ); int start = LineIndex( lineno ); int end = LineIndex( lineno + 1 ); SetSel( start, end - 1 ); return 0; } void CLineNumberEdit::SetWindowColour( BOOL bEnable /*= TRUE*/ ) /* ============================================================ Function : CLineNumberEdit::SetWindowColour Description : Handles changing window colours. Return : void Parameters : BOOL bEnable - flag if set enabled/disabled colours Usage : Called to change colours in the edit box. ============================================================*/ { if (m_bUseEnabledSystemColours) { // re-query the system colours in case they have changed. m_EnabledFgCol = GetSysColor( COLOR_WINDOWTEXT ); m_EnabledBgCol = GetSysColor( COLOR_WINDOW ); } if (m_bUseDisabledSystemColours) { // re-query the system colours in case they have changed. m_DisabledFgCol = GetSysColor( COLOR_GRAYTEXT ); m_DisabledBgCol = GetSysColor( COLOR_3DFACE ); } // change the colour based on bEnable if (bEnable) { m_line.SetFgColor( m_EnabledFgCol, TRUE ); m_line.SetBgColor( m_EnabledBgCol, TRUE ); } else { m_line.SetFgColor( m_DisabledFgCol, TRUE ); m_line.SetBgColor( m_DisabledBgCol, TRUE ); } } void CLineNumberEdit::UseSystemColours( BOOL bUseEnabled /*= TRUE*/, BOOL bUseDisabled /*= TRUE*/ ) /* ============================================================ Function : CLineNumberEdit::UseSystemColours Description : Sets the Use*SystemColours flags. Return : void Parameters : BOOL bEnabled - flag if to use enabled system colours BOOL bDisabled - flag if to use disabled system colours Usage : Called to change colours in the edit box ============================================================*/ { m_bUseEnabledSystemColours = bUseEnabled; m_bUseDisabledSystemColours = bUseDisabled; BOOL bEnable = TRUE; if (::IsWindow(m_hWnd)) bEnable = IsWindowEnabled(); SetWindowColour( bEnable ); } ///////////////////////////////////////////////////////////////////////////// // CLineNumberEdit private implementation void CLineNumberEdit::Prepare() /* ============================================================ Function : CLineNumberEdit::Prepare Description : Setting the edit rect for the control and either create or move the line number control. Also sets the top- and bottom line numbers. Return : void Parameters : none Usage : Must be called to (re)establish the edit rect, must also be called as soon as the control changes size. ============================================================*/ { // Calc sizes int width = CalcLineNumberWidth(); CRect rect; GetClientRect( &rect ); CRect rectEdit( rect ); rect.right = width; rectEdit.left = rect.right + 1; // Setting the edit rect and // creating or moving child control SetRect( &rectEdit ); if( m_line.m_hWnd ) m_line.MoveWindow( 0, 0, width, rect.Height() ); else m_line.Create(NULL,WS_CHILD | WS_VISIBLE | SS_NOTIFY, rect, this, 1 ); GetRect( &rectEdit ); // Update line number control data m_line.SetTopMargin( rectEdit.top ); UpdateTopAndBottom(); } int CLineNumberEdit::CalcLineNumberWidth() /* ============================================================ Function : CLineNumberEdit::CalcLineNumberWidth Description : Calculates the desired width of the line number control, using the current format string and the max number of chars allowed (pessimistic - assumes one character per line). Return : int - The width in pixels Parameters : none Usage : Called as soon as the format string is changed. ============================================================*/ { CClientDC dc( this ); // If a new font is set during runtime, // we must explicitly select the font into // the CClientDC to measure it. CFont* font = GetFont(); CFont* oldFont = dc.SelectObject( font ); m_zero=dc.GetTextExtent( _T( "0" ) ); CString format; // GetLimitText returns the number of bytes the edit box may contain, // not the max number of lines... //... which is the max number of lines, given one character per d:o :-) int maxval = GetLimitText(); if (m_maxval > 0) maxval = m_maxval + m_LineDelta; format.Format( m_format, maxval ); CSize fmt = dc.GetTextExtent( format ); dc.SelectObject( oldFont ); // Calculate the size of the line- // number field. We add a 5 pixel margin // to the max size of the format string return fmt.cx + 5; } void CLineNumberEdit::UpdateTopAndBottom() /* ============================================================ Function : CLineNumberEdit::UpdateTopAndBottom Description : Updates the top- and bottom line number for the line number control. Return : void Parameters : none Usage : Should be called as soon as the contents of the control is changed. ============================================================*/ { CRect rect; GetClientRect( &rect ); int maxline = GetLineCount() + m_LineDelta; // Height for individual lines int lineheight = m_zero.cy; // Calculate the number of lines to draw int topline = GetFirstVisibleLine() + m_LineDelta; if( ( topline + ( rect.Height() / lineheight ) ) < maxline ) maxline = topline + ( rect.Height() / lineheight ); if ( m_maxval > 0 && maxline > m_maxval + m_LineDelta ) maxline = m_maxval + m_LineDelta; m_line.SetTopAndBottom( topline, maxline ); } ///////////////////////////////////////////////////////////////////////////// // CLineNumberEdit public implementation void CLineNumberEdit::SetMarginForegroundColor( COLORREF col, BOOL redraw, BOOL bEnabled /*= TRUE*/ ) /* ============================================================ Function : CLineNumberEdit::SetMarginForegroundColor Description : Sets the text color for the number margin. Return : void Parameters : COLORREF col - The new text color BOOL redraw - TRUE if the control should be redrawn (default) Usage : Call to set a new text color for the line number margin. The control will be redrawn if it exists. ============================================================*/ { m_line.SetFgColor( col, redraw ); if (bEnabled) { m_bUseEnabledSystemColours = FALSE; m_EnabledFgCol = col; } else { m_bUseDisabledSystemColours = FALSE; m_DisabledFgCol = col; } } void CLineNumberEdit::SetMarginBackgroundColor( COLORREF col, BOOL redraw, BOOL bEnabled /*= TRUE*/ ) /* ============================================================ Function : CLineNumberEdit::SetMarginBackgroundColor Description : Sets the background color for the number margin. Return : void Parameters : COLORREF col - The new background color BOOL redraw - TRUE if the control should be redrawn (default) Usage : Call to set a new background color for the line number margin. The control will be redrawn if it exists. ============================================================*/ { m_line.SetBgColor( col, redraw ); if (bEnabled) { m_bUseEnabledSystemColours = FALSE; m_EnabledBgCol = col; } else { m_bUseDisabledSystemColours = FALSE; m_DisabledBgCol = col; } } void CLineNumberEdit::SetLineNumberFormat( CString format ) /* ============================================================ Function : CLineNumberEdit::SetLineNumberFormat Description : Changes the way line numbers are presented on screen. Return : void Parameters : CString format - The new format string Usage : Call with a format string using the same format as CString::Format. It should contain one and only one numeric type. ============================================================*/ { m_format = format; m_line.SetLineNumberFormat( format ); if( m_hWnd ) Prepare(); } void CLineNumberEdit::SetLineNumberRange( UINT nMin, UINT nMax /*= 0*/ ) /* ============================================================ Function : CLineNumberEdit::SetLineNumberRange Description : Changes the default min and max line numbers. Return : void Parameters : int nMin - changes the line offset int nMax - changes the max line number Usage : Call to set up the min and max line numbers. ============================================================*/ { m_LineDelta = ( int ) nMin; m_maxval = ( int ) nMax; } ///////////////////////////////////////////////////////////////////////////// // CLineNumberStatic CLineNumberStatic::CLineNumberStatic() /* ============================================================ Function : CLineNumberStatic::CLineNumberStatic Description : constructor Return : void Parameters : none Usage : ============================================================*/ { m_bgcol = RGB( 255, 255, 248 ); m_fgcol = RGB( 0, 0, 0 ); m_format = _T( "%05i" ); m_topline = 0; m_bottomline = 0; } CLineNumberStatic::~CLineNumberStatic() /* ============================================================ Function : CLineNumberStatic::~CLineNumberStatic Description : destructor Return : void Parameters : none Usage : ============================================================*/ { } BEGIN_MESSAGE_MAP(CLineNumberStatic, CStatic) ON_WM_PAINT() ON_WM_ERASEBKGND() ON_WM_LBUTTONDOWN() END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CLineNumberStatic message handlers void CLineNumberStatic::OnPaint() /* ============================================================ Function : CLineNumberStatic::OnPaint Description : Handler for WM_PAINT. Return : void Parameters : none Usage : Called from Windows. ============================================================*/ { CPaintDC dcPaint( this ); CRect rect; GetClientRect( &rect ); // We double buffer the drawing - // preparing the memory CDC CDC dc; dc.CreateCompatibleDC( &dcPaint ); int saved = dc.SaveDC(); // Create GDI and select objects CBitmap bmp; CPen pen; bmp.CreateCompatibleBitmap( &dcPaint, rect.Width(), rect.Height() ); pen.CreatePen( PS_SOLID, 1, m_fgcol ); dc.SelectObject( &bmp ); dc.SelectObject( &pen ); // Painting the background dc.FillSolidRect( &rect, m_bgcol ); dc.MoveTo( rect.right - 1, 0 ); dc.LineTo( rect.right - 1, rect.bottom ); // Setting other attributes dc.SetTextColor( m_fgcol ); dc.SetBkColor( m_bgcol ); dc.SelectObject( GetParent()->GetFont() ); // Output the line numbers if( m_bottomline ) { int lineheight = dc.GetTextExtent( _T( "0" ) ).cy; for( int t = m_topline ; t < m_bottomline ; t++ ) { CString output; output.Format( m_format, t ); int topposition = m_topmargin + lineheight * ( t - m_topline ); dc.TextOut( 2, topposition, output ); } } dcPaint.BitBlt( 0, 0, rect. right, rect.bottom, &dc, 0, 0, SRCCOPY ); dc.RestoreDC( saved ); } BOOL CLineNumberStatic::OnEraseBkgnd( CDC* ) /* ============================================================ Function : CLineNumberStatic::OnEraseBkgnd Description : Mapped to WM_ERASEBKGND. Handled to avoid flicker, as we redraw the complete control in OnPaint Return : BOOL - Always TRUE Parameters : CDC* - From Windows Usage : Called from Windows. ============================================================*/ { return TRUE; } void CLineNumberStatic::OnLButtonDown( UINT nFlags, CPoint point ) /* ============================================================ Function : CLineNumberStatic::OnLButtonDown Description : Called when the control is clicked. Will send the urm_SELECTLINE registered message to the parent to select the line clicked on. Return : void Parameters : UINT nFlags - Not used CPoint point - Position of cursor Usage : Called from Windows. ============================================================*/ { // Find the line clicked on CClientDC dc( this ); dc.SelectObject( GetParent()->GetFont() ); int lineheight = dc.GetTextExtent( _T( "0" ) ).cy; int lineno = ( int ) ( ( double ) point.y / ( double ) lineheight ); // Select this line in the edit control GetParent()->SendMessage( urm_SELECTLINE, lineno ); CStatic::OnLButtonDown( nFlags, point ); } ///////////////////////////////////////////////////////////////////////////// // CLineNumberStatic public implementation void CLineNumberStatic::SetBgColor( COLORREF col, BOOL redraw ) /* ============================================================ Function : CLineNumberStatic::SetBgColor Description : This function sets the panel background color Return : void Parameters : COLORREF col - New background color BOOL redraw - TRUE if the control should be redrawn (default) Usage : Called from the parent. ============================================================*/ { m_bgcol = col; if( m_hWnd && redraw ) RedrawWindow(); } void CLineNumberStatic::SetFgColor( COLORREF col, BOOL redraw ) /* ============================================================ Function : CLineNumberStatic::SetFgColor Description : This function sets the panel foreground color Return : void Parameters : COLORREF col - New text color BOOL redraw - TRUE if the control should be redrawn (default) Usage : Called from the parent. ============================================================*/ { m_fgcol = col; if( m_hWnd && redraw ) RedrawWindow(); } void CLineNumberStatic::SetTopAndBottom( int topline, int bottomline ) /* ============================================================ Function : CLineNumberStatic::SetTopAndBottom Description : Sets the top- and bottom line and redraw the control (if it exists) Return : void Parameters : int topline - The top line number int bottomline - The bottom line number Usage : Called when the top and bottom line is changed in the parent. ============================================================*/ { m_topline = topline; m_bottomline = bottomline; if( m_hWnd ) RedrawWindow(); } void CLineNumberStatic::SetTopMargin( int topmargin ) /* ============================================================ Function : CLineNumberStatic::SetTopMargin Description : Sets the top margin for painting. Return : void Parameters : int topmargin - The top margin to set Usage : Will be called with the value of GetRect from the parent. ============================================================*/ { m_topmargin = topmargin; } void CLineNumberStatic::SetLineNumberFormat( CString format ) /* ============================================================ Function : CLineNumberStatic::SetLineNumberFormat Description : Sets the format string of the control Return : void Parameters : CString format - Format string to use Usage : Called from the parent when the format string is changed. ============================================================*/ { m_format = format; if( m_hWnd ) RedrawWindow(); }
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