#ifndef __BUFFER_WND_H_
#define __BUFFER_WND_H_

//#pragma once

/*
CBufferWnd：完成屏幕輸出類

功能：類似與Console屏幕的輸出方式
1 管理光標，光標定義在輸入后的待輸入位置
2 向屏幕輸出字符，通過在光標后面添加字符串，或者通過指定行列設置字符
3 管理滾動

功能限制：
1 不會對字符進行處理，只會直接將字符進行顯示
*/
namespace spBase
{

// CBufferWnd
#define WYYBUFFER_WND			"WYY_BUFFER_WND"
//定義滾動時每頁的尺寸
#define HSCROLL_PAGE_SIZE			5
#define VSCROLL_PAGE_SIZE			5

#define WM_BW_NOTIFY				WM_USER + 188 // add by wenyy 2003/08/20
/*
WPARAM = 0 時表示 ScrollTxtUp ，LPARAM為參數(shù)
HIWORD(LPARAM) = 滾動行數(shù)
LOBYTE(LOWORD(LPARAM)) = 填充字符

WPARAM = 1 時表示 AppendTxtAtCaret
LPARAM = 指向結(jié)構(gòu) struct CBufferWnd::strAppendTxt 的指針

*/

class CConsoler;
class CBufferWnd : public CWnd
{
	DECLARE_DYNAMIC(CBufferWnd)
	friend class CConsoler;
public:
	CBufferWnd();
	virtual ~CBufferWnd();
	BOOL RegisterWindowClass(void);
public:
	//	ASSERT(iWidthBuf>20 && iWidthBuf<=512 && iHeightBuf>4 && iHeightBuf<512 );
	//  dwFlagsAdd 附加的窗口風格，window style attributes，默認的風格：WS_CHILD | WS_VSCROLL | WS_HSCROLL;
	//創(chuàng)建子窗口
	BOOL CreateChildWnd(DWORD dwFlagsAdd, CWnd * parent, LPCSTR pszTitle,const CRect & rect,int nID, 
						int iTabSize, int iFontSize, int iWidthBuf, int iHeightBuf);
	//創(chuàng)建彈出窗口
	// 默認的風格： WS_OVERLAPPED | WS_VSCROLL | WS_HSCROLL;
	BOOL CreateAppWnd(DWORD dwFlagsAdd,LPCSTR pszTitle,const CRect & rect, 
						int iTabSize, int iFontSize, int iWidthBuf, int iHeightBuf);
	//設置退出標記
	void SetCanExitFlag(BOOL fCan){m_fCanExit = fCan;};
public://滾動功能
	void ReCalcScrollSize( void); 
	void ScrollTo(int iX,int iY);
	//檢查指定行列是否能夠顯示，如果不能顯示，則進行滾動
	BOOL ScrollIfPointNotShown(int iX,int iY);
public://光標功能
	BOOL OpenCaretAsNecessary(void);
	void CloseCaret(void);
	void GetCaretPoint(CPoint& ptCaret){ptCaret = m_ptCaret;};
	//將光標移動到指定行列
	void SetCaretPoint(int iX,int iY){m_ptCaret=CPoint(iX,iY);SetCaretPoint();};
	void SetCaretPoint(CPoint ptCaret){m_ptCaret = ptCaret;SetCaretPoint();};
	void SetCaretPoint(void);
public://繪圖功能
	void PaintWnd(CDC* pDC);
public://文字功能
	struct strAppendTxt
	{
		BOOL fShowY;
		BOOL fShowX;
		int iTxtLen;
		LPCSTR pszTxt;
	};
	//在光標處添加文字,同時改變光標位置
	//BOOL fShowY=TRUE,BOOL fShowX=FALSE
	//在添加文字后是否強制滾動到文字的最后位置
	void AppendTxtAtCaret(LPCSTR pszText,BOOL fShowY=TRUE,BOOL fShowX=FALSE){ASSERT(pszText);AppendTxtAtCaret((int)strlen(pszText),pszText,fShowY,fShowX);};
	//在光標處添加文字
	void AppendTxtAtCaret(int iTxtLen,LPCSTR pszText,BOOL fShowY=TRUE,BOOL fShowX=FALSE);
	//滾動文字，并在后面填入空行，不改變光標位置
	void ScrollTxtUp(int iLines,char cFill=0x20);
public://屬性
	//檢查某行列在窗口內(nèi)是否可見
	BOOL IsPosVisible(int iX,int iY);
	//得到經(jīng)過計算的顯示全部緩沖區(qū)內(nèi)容需要的顯示區(qū)域大小
	CSize GetNeedSize(void){return m_sizeNeed;};
	//得到指定位置的值
	BYTE& GetXY(int iX,int iY){ASSERT(m_pbBuffer && iX<m_iWidthBuf && iY<m_iHeightBuf);return m_pbBuffer[iX +iY*m_iWidthBuf];};
	BYTE& operator [] (int iIndex){ASSERT(m_pbBuffer && iIndex<m_iWidthBuf *m_iHeightBuf);return m_pbBuffer[iIndex];};
	//得到緩沖區(qū)指針
	const BYTE* GetBuffer(void){return m_pbBuffer;};
	//得到緩沖區(qū)大小
	int GetBufferLen(void){ASSERT(m_pbBuffer);return m_iLenBuffer;};
	//得到文字窗口尺寸
	void GetBufferWindowSize(int &iWidth,int &iHeight){iWidth = m_iWidthBuf;iHeight= m_iHeightBuf;};
	//得到光標位置
	CPoint GetCaretPoint(void){return m_ptCaret;};

protected:
	DECLARE_MESSAGE_MAP()
    
protected:
	
	BOOL CreateEx(DWORD dwFlagsEx,DWORD dwFlags,CWnd * parent,LPCSTR pszTitle, const CRect & rect,int nID, 
               int iTabSize, int iFontSize, int iWidthBuf, int iHeightBuf);

protected://參數(shù)設置功能
	void SetBaseParameter(int iTabSize,int iFontSize, int iWidthBuf, int iHeightBuf);
	//消息通知
	void NotifyParent(UINT msg);
	//判斷指定位置字符是否為中文字符的第二個字節(jié)
	BOOL IsSecondByteOfDBCS(int iX,int iY);
protected:
	CWnd *m_pwndParent;
	BYTE *m_pbBuffer; //緩沖區(qū)
	int m_iTabSize;
	int m_iWidthBuf,m_iHeightBuf,m_iLenBuffer;
	CFont *m_ftDraw; //屏幕字體 宋體
	int m_iFontWidth,m_iFontHeight; //字體大小
	int m_iFontMarginX,m_iFontMarginY;//每行，每列需要留出的空間
	COLORREF m_crFont,m_crBackground;

	CSize m_sizeNeed;//顯示全部緩沖區(qū)內(nèi)容需要的顯示區(qū)域大小
	CSize m_sizeIndeed;//當前窗口實際可以顯示的窗口大小
	CSize m_sizeIndeedDraw;

	CPoint m_ptCaret;//記錄光標位置
	BOOL m_fCaret; //光標是否顯示
	int m_nWndID;//窗口ID
	BOOL m_fPopupWnd,m_fCanExit;
public:
	afx_msg LRESULT OnBWndNotifyMsg(WPARAM wP, LPARAM lP);
	afx_msg void OnPaint();
	afx_msg BOOL OnEraseBkgnd(CDC* pDC);
	afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnSetFocus(CWnd* pOldWnd);
	afx_msg void OnKillFocus(CWnd* pNewWnd);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnLButtonDblClk(UINT nFlags, CPoint point);
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnRButtonDblClk(UINT nFlags, CPoint point);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnDestroy();
	afx_msg void OnClose();
};
/*
CConsoler : 完成各種類似與控制臺的輸出功能：
1 通過printf方式輸出
2 指定位置輸出字符

*/
class CConsoler
{
public:
	CConsoler();
	~CConsoler();
	void SetBufferWnd(CBufferWnd* pWnd);
public:
	void printfX(const char *pszFormat,...);
	BYTE& GetXY(int iX,int iY){ASSERT(m_pBufWnd); return m_pBufWnd->GetXY(iX,iY);};
	CBufferWnd* GetWindow(void){return m_pBufWnd;};
protected:
	//將字符串格式化成具體數(shù)據(jù)
	//將Tab鍵進行轉(zhuǎn)換，將\n , \r進行轉(zhuǎn)換，處理中文作為最后一個字符時換行，
	//返回實際使用的字符數(shù)量
	int FormatCharsAndOutput(LPCSTR pszSrc,int iLen);
	//
	BOOL IsCtrlChar(char c){return (c=='\t' || c=='\n' || c=='\r');};
protected:
	CBufferWnd* m_pBufWnd;
};

class CMemDC : public CDC
{
public:
	
	// constructor sets up the memory DC
	CMemDC(CDC* pDC) : CDC()
    {
		ASSERT(pDC != NULL);
		
		m_pDC = pDC;
		m_pOldBitmap = NULL;
        m_bMemDC = !pDC->IsPrinting();
		
        if (m_bMemDC)	// Create a Memory DC
		{
            pDC->GetClipBox(&m_rect);
            CreateCompatibleDC(pDC);
            m_bitmap.CreateCompatibleBitmap(pDC, m_rect.Width(), m_rect.Height());
			m_pOldBitmap = SelectObject(&m_bitmap);
            SetWindowOrg(m_rect.left, m_rect.top);
        }
		else		// Make a copy of the relevent parts of the current DC for printing
		{
            m_bPrinting = pDC->m_bPrinting;
            m_hDC		= pDC->m_hDC;
            m_hAttribDC = pDC->m_hAttribDC;
        }
	}
	
	// Destructor copies the contents of the mem DC to the original DC
	~CMemDC()
    {
		if (m_bMemDC) {	
			// Copy the offscreen bitmap onto the screen.
			m_pDC->BitBlt(m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(),
				this, m_rect.left, m_rect.top, SRCCOPY);
			
            //Swap back the original bitmap.
            SelectObject(m_pOldBitmap);
		} else {
			// All we need to do is replace the DC with an illegal value,
			// this keeps us from accidently deleting the handles associated with
			// the CDC that was passed to the constructor.
            m_hDC = m_hAttribDC = NULL;
		}
	}
	
	// Allow usage as a pointer
    CMemDC* operator->() {return this;}
	
    // Allow usage as a pointer
    operator CMemDC*() {return this;}

private:
	CBitmap  m_bitmap;		// Offscreen bitmap
    CBitmap* m_pOldBitmap;	// bitmap originally found in CMemDC
    CDC*     m_pDC;			// Saves CDC passed in constructor
    CRect    m_rect;		// Rectangle of drawing area.
    BOOL     m_bMemDC;		// TRUE if CDC really is a Memory DC.
};


};

#endif