zhanglu15view.cpp

简单文本编辑器

// zhanglu15View.cpp : implementation of the CZhanglu15View class
//

#include "stdafx.h"
#include "zhanglu15.h"

#include "zhanglu15Doc.h"
#include "zhanglu15View.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CZhanglu15View

IMPLEMENT_DYNCREATE(CZhanglu15View, CView)

BEGIN_MESSAGE_MAP(CZhanglu15View, CView)
	//{{AFX_MSG_MAP(CZhanglu15View)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_WM_CREATE()
	ON_WM_CHAR()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CZhanglu15View construction/destruction

CZhanglu15View::CZhanglu15View()
{
	// TODO: add construction code here  
    m_strLine="";
    m_ptOrigin=0;

    m_bDragging=false;  // 初始化拖拽标记	
	// 获得十字光标句柄
	m_hCross=AfxGetApp()->
    LoadStandardCursor(IDC_CROSS);
}

CZhanglu15View::~CZhanglu15View()
{
}

BOOL CZhanglu15View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CZhanglu15View drawing

void CZhanglu15View::OnDraw(CDC* pDC)
{
	CZhanglu15Doc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
    
	int   nIndex=pDoc->GetNumLines();  // 取得线段的数量
	// 循环画出每一段线段
	while(nIndex--)  		// 数组下标从0到nIndex-1
	{
		pDoc->GetLine(nIndex)->DrawLine(pDC);  
						// 类CLine的成员函数
	}

}

/////////////////////////////////////////////////////////////////////////////
// CZhanglu15View printing

BOOL CZhanglu15View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CZhanglu15View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CZhanglu15View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CZhanglu15View diagnostics

#ifdef _DEBUG
void CZhanglu15View::AssertValid() const
{
	CView::AssertValid();
}

void CZhanglu15View::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CZhanglu15Doc* CZhanglu15View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CZhanglu15Doc)));
	return (CZhanglu15Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CZhanglu15View message handlers

void CZhanglu15View::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	SetCaretPos(point);
	m_strLine.Empty();
    m_ptOrigin=point;

	SetCapture();  // 捕捉鼠标
	::SetCursor(m_hCross);  	// 设置十字光标
	m_ptOrigin=point;
	m_bDragging=TRUE;  	// 设置拖拽标记
	CView::OnLButtonDown(nFlags, point);
}

void CZhanglu15View::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(m_bDragging)
	{
	      m_bDragging=false;   	// 清拖拽标记	
	      ReleaseCapture();    // 释放鼠标，还原鼠标形状
	}

//	CView::OnLButtonUp(nFlags, point);
}

void CZhanglu15View::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(m_bDragging)
	{   CZhanglu15Doc  *pDoc=GetDocument(); //获得文档对象指针
		ASSERT_VALID(pDoc);  	//测试文档对象是否运行有效
		pDoc->AddLine(m_ptOrigin, point);  //加入线段到指针数组
		CClientDC   dc(this);
		dc.MoveTo(m_ptOrigin); 
		dc.LineTo(point);  		// 绘制线段
		m_ptOrigin=point;  		// 新的起始点
	}

CStatusBar*pFrame=(CStatusBar*)AfxGetMainWnd(); 
CStatusBar*pStatusBar=(CStatusBar*)pFrame->GetDescendantWindow(AFX_IDW_STATUS_BAR); 
CString strMousePoint; 
strMousePoint.Format("%3d,%3d",point.x,point.y); 
pStatusBar->SetPaneText(pStatusBar->CommandToIndex(IDS_INDICATOR_MOUSE),strMousePoint); 

	CView::OnMouseMove(nFlags, point);
}




int CZhanglu15View::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
    CClientDC dc(this);//创建设备描述表
	TEXTMETRIC tm;//定义文本信息结构体变量
	dc.GetTextMetrics(&tm);//获得设备描述表中文本信息
   CreateSolidCaret(tm.tmAveCharWidth/8,tm.tmHeight);
          //根据字体大小，创建合适的插入符
	ShowCaret();//显示显示符


	return 0;


}

void CZhanglu15View::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	CClientDC dc(this);
	TEXTMETRIC tm;
	dc.GetTextMetrics(&tm);
	if(0x0d==nChar)
	{
	 m_strLine.Empty();
	 m_ptOrigin.y+=tm.tmHeight;
	}
	else if(0x08==nChar)
	{
	  COLORREF clr=dc.SetTextColor(dc.GetBkColor());
	  dc.TextOut(m_ptOrigin.x,m_ptOrigin.y,m_strLine);
	  m_strLine=m_strLine.Left(m_strLine.GetLength()-1);
	  dc.SetTextColor(clr);
	}
	else
	{
	  m_strLine+=nChar;
	}
    CSize sz=dc.GetTextExtent(m_strLine);
	CPoint pt;
	pt.x=m_ptOrigin.x+sz.cx;
	pt.y=m_ptOrigin.y;
	SetCaretPos(pt);

	dc.TextOut(m_ptOrigin.x,m_ptOrigin.y,m_strLine);

	CView::OnChar(nChar, nRepCnt, nFlags);
}

//DEL void CZhanglu15View::OnIdcColor() 
//DEL {
//DEL 	// TODO: Add your command handler code here
//DEL pDC->SetTextColor(RGB(255,0,0));//字体颜色
//DEL 	
//DEL }

void CZhanglu15View::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	
	CView::OnTimer(nIDEvent);
}