LineNumberEdit.h

#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 );

        int GetLineHeight() {return m_zero.cy;}

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_)

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