#ifndef __HEXEDVW_H__INCLUDED__
#define __HEXEDVW_H__INCLUDED__

/////////////////////////////////////////////////////////////////////////////
// CHexEditView window

#define HVW_SHOW_ADDRESS 0x00001
#define HVW_SHOW_ASCII 0x0002
#define HVW_SHOW_HEX 0x0004
#define HVW_WIDE_ADDRESS 0x0008
#define HVW_ALL (HVW_SHOW_ADDRESS|HVW_SHOW_ASCII|HVW_SHOW_HEX|HVW_WIDE_ADDRESS)
#define HVW_EXTENDED (HVW_ALL|HVW_READ_ONLY)

#define HVW_READ_ONLY 0x1000
#define HVW_NO_ADDRESS_CHANGE 0x2000
#define HVW_HALF_PAGE 0x4000
#define HVW_UPDATE 0x8000

class CHexEditView : public CView
{
// Construction
public:
	DECLARE_DYNCREATE(CHexEditView)
	CHexEditView();

	enum EDITMODE{  
		EDIT_NONE,
		EDIT_ASCII,
		EDIT_HIGH,
		EDIT_LOW
	};
// Attributes
public:
	LPBYTE  *m_pData;      // pointer to data
	int     *m_length;     // length of data
	DWORD   m_dwFlags;
	int     m_topindex;     // offset of first visible byte on screen

	int     m_currentAddress; // address under cursor
	EDITMODE  m_currentMode;    // current editing mode: address/hex/ascii
	int     m_selStart;     // start address of selection
	int     m_selEnd;     // end address of selection

	int     m_bpr;        // byte per row 
	int     m_lpp;        // lines per page
  
	CFont   m_Font;
	int     m_lineHeight;
	int     m_nullWidth;

	int     m_offHex,
			m_offAscii,
			m_offAddress;

	CPoint    m_editPos;

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CHexEditView)
public:
	virtual BOOL Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext = NULL);
protected:
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	virtual void OnDraw(CDC* pDC);
	//}}AFX_VIRTUAL

// Implementation
public:
	int GetData(LPBYTE p, int len);
	int GetOrigData(LPBYTE &p);
	void SetData(LPBYTE p, int len);
	void SetOrigData(LPBYTE p, int len);
	CSize GetSel(void);
	void SetSel(int s, int e);
	void SetBPR(int bpr);
	void GetOptions(BOOL &a, BOOL &h, BOOL &c, BOOL &w, BOOL &r);
	void SetOptions(BOOL a, BOOL h, BOOL c, BOOL w, BOOL r);
	void SetOptions(DWORD dwFlags);
	virtual ~CHexEditView();

// Generated message map functions
protected:
	void    ScrollIntoView(int p);
	void    RepositionCaret(int p);
	void    Move(int x, int y);
	inline BOOL IsSelected(void);
	void    UpdateScrollbars(void);
	void    CreateEditCaret(void);
	void    CreateAddressCaret(void);
	CPoint    CalcPos(int x, int y);
	void    SelInsert(int s, int l);
	void    SelDelete(int s, int e);
	inline void NormalizeSel(void);
	void ResetView ();
	afx_msg void OnContextMenu(CWnd*, CPoint point);
	//{{AFX_MSG(CHexEditView)
	afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg void OnKillFocus(CWnd* pNewWnd);
	afx_msg void OnPaint();
	afx_msg void OnSetFocus(CWnd* pOldWnd);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg UINT OnGetDlgCode();
	afx_msg BOOL OnEraseBkgnd(CDC* pDC);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnLButtonDblClk(UINT nFlags, CPoint point);
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg void OnEditClear();
	afx_msg void OnEditCopy();
	afx_msg void OnEditCut();
	afx_msg void OnEditPaste();
	afx_msg void OnEditSelectAll();
	afx_msg void OnEditUndo();
	afx_msg void OnReadOnly();
	afx_msg void OnUpdateReadOnly (CCmdUI * pCmdUI);
	afx_msg void OnFormatShowAddress();
	afx_msg void OnUpdateFormatShowAddress (CCmdUI * pCmdUI);
	afx_msg void OnFormatShowAscii();
	afx_msg void OnUpdateFormatShowAscii (CCmdUI * pCmdUI);
	afx_msg void OnFormatShowHex();
	afx_msg void OnUpdateFormatShowHex (CCmdUI * pCmdUI);
	afx_msg void OnFormatWideAddress();
	afx_msg void OnUpdateFormatWideAddress (CCmdUI * pCmdUI);
	afx_msg void OnBpr (UINT nCmd);
	afx_msg void OnUpdateBpr (CCmdUI * pCmdUI);
	//}}AFX_MSG

  DECLARE_MESSAGE_MAP()
};

#endif // __HEXEDVW_H__INCLUDED__