www.pudn.com > 2003090514065121890.zip > spBufferWnd.h

#ifndef __BUFFER_WND_H_ 
#define __BUFFER_WND_H_ 
 
//#pragma once 
 
/* 
CBufferWnd：完成屏幕输出类 
 
功能：类似与Console屏幕的输出方式 
1 管理光标，光标定义在输入后的待输入位置 
2 向屏幕输出字符，通过在光标后面添加字符串，或者通过指定行列设置字符 
3 管理滚动 
 
功能限制： 
1 不会对字符进行处理，只会直接将字符进行显示 
*/ 
namespace spBase 
{ 
 
// CBufferWnd 
#define WYYBUFFER_WND			"WYY_BUFFER_WND" 
//定义滚动时每页的尺寸 
#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 时表示 ScrollTxtUp ，LPARAM为参数 
HIWORD(LPARAM) = 滚动行数 
LOBYTE(LOWORD(LPARAM)) = 填充字符 
 
WPARAM = 1 时表示 AppendTxtAtCaret 
LPARAM = 指向结构 struct CBufferWnd::strAppendTxt 的指针 
 
*/ 
 
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 附加的窗口风格，window style attributes，默认的风格：WS_CHILD | WS_VSCROLL | WS_HSCROLL; 
	//创建子窗口 
	BOOL CreateChildWnd(DWORD dwFlagsAdd, CWnd * parent, LPCSTR pszTitle,const CRect & rect,int nID,  
						int iTabSize, int iFontSize, int iWidthBuf, int iHeightBuf); 
	//创建弹出窗口 
	// 默认的风格： WS_OVERLAPPED | WS_VSCROLL | WS_HSCROLL; 
	BOOL CreateAppWnd(DWORD dwFlagsAdd,LPCSTR pszTitle,const CRect & rect,  
						int iTabSize, int iFontSize, int iWidthBuf, int iHeightBuf); 
	//设置退出标记 
	void SetCanExitFlag(BOOL fCan){m_fCanExit = fCan;}; 
public://滚动功能 
	void ReCalcScrollSize( void);  
	void ScrollTo(int iX,int iY); 
	//检查指定行列是否能够显示，如果不能显示，则进行滚动 
	BOOL ScrollIfPointNotShown(int iX,int iY); 
public://光标功能 
	BOOL OpenCaretAsNecessary(void); 
	void CloseCaret(void); 
	void GetCaretPoint(CPoint& ptCaret){ptCaret = m_ptCaret;}; 
	//将光标移动到指定行列 
	void SetCaretPoint(int iX,int iY){m_ptCaret=CPoint(iX,iY);SetCaretPoint();}; 
	void SetCaretPoint(CPoint ptCaret){m_ptCaret = ptCaret;SetCaretPoint();}; 
	void SetCaretPoint(void); 
public://绘图功能 
	void PaintWnd(CDC* pDC); 
public://文字功能 
	struct strAppendTxt 
	{ 
		BOOL fShowY; 
		BOOL fShowX; 
		int iTxtLen; 
		LPCSTR pszTxt; 
	}; 
	//在光标处添加文字,同时改变光标位置 
	//BOOL fShowY=TRUE,BOOL fShowX=FALSE 
	//在添加文字后是否强制滚动到文字的最后位置 
	void AppendTxtAtCaret(LPCSTR pszText,BOOL fShowY=TRUE,BOOL fShowX=FALSE){ASSERT(pszText);AppendTxtAtCaret((int)strlen(pszText),pszText,fShowY,fShowX);}; 
	//在光标处添加文字 
	void AppendTxtAtCaret(int iTxtLen,LPCSTR pszText,BOOL fShowY=TRUE,BOOL fShowX=FALSE); 
	//滚动文字，并在后面填入空行，不改变光标位置 
	void ScrollTxtUp(int iLines,char cFill=0x20); 
public://属性 
	//检查某行列在窗口内是否可见 
	BOOL IsPosVisible(int iX,int iY); 
	//得到经过计算的显示全部缓冲区内容需要的显示区域大小 
	CSize GetNeedSize(void){return m_sizeNeed;}; 
	//得到指定位置的值 
	BYTE& GetXY(int iX,int iY){ASSERT(m_pbBuffer && iXGetXY(iX,iY);}; 
	CBufferWnd* GetWindow(void){return m_pBufWnd;}; 
protected: 
	//将字符串格式化成具体数据 
	//将Tab键进行转换，将\n , \r进行转换，处理中文作为最后一个字符时换行， 
	//返回实际使用的字符数量 
	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