retextview.cpp

基于windows 的文本编程

// RetextView.cpp : implementation of the CRetextView class
//

#include "stdafx.h"
#include "Retext.h"

#include "RetextDoc.h"
#include "RetextView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CRetextView

IMPLEMENT_DYNCREATE(CRetextView, CView)

BEGIN_MESSAGE_MAP(CRetextView, CView)
	//{{AFX_MSG_MAP(CRetextView)
	ON_WM_CREATE()
	ON_WM_CHAR()
	ON_WM_LBUTTONDOWN()
	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()

/////////////////////////////////////////////////////////////////////////////
// CRetextView construction/destruction

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

CRetextView::~CRetextView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CRetextView drawing

void CRetextView::OnDraw(CDC* pDC)
{
	CRetextDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	CString str;
	str="北京维新科学技术中心";
	pDC->TextOut(50,50,str);
	CSize sz=pDC->GetTextExtent(str);

	str.LoadString(IDS_WEIXIN);
	pDC->TextOut(0,200,str);

	pDC->BeginPath();
	pDC->Rectangle(CRect(50,50,50+sz.cx,50+sz.cy));
	pDC->EndPath();
	pDC->SelectClipPath(RGN_DIFF);
	for(int i=0;i<300;i+=10)
	{
		pDC->MoveTo(i,0);
		pDC->LineTo(i,300);
		pDC->MoveTo(0,i);
		pDC->LineTo(300,i);
	}

	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CRetextView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CRetextView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CRetextView message handlers

int CRetextView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	CClientDC dc(this);
	TEXTMETRIC tm;
	dc.GetTextMetrics(&tm);
	CreateSolidCaret(tm.tmAveCharWidth/8,tm.tmHeight);
	
//	bitmap.LoadBitmap(IDB_BITMAP1);
//	CreateCaret(&bitmap);

	ShowCaret();
	SetTimer(1,100,NULL);
	return 0;
}

void CRetextView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	CClientDC dc(this);
	CFont font;
	font.CreatePointFont(300,"华文行楷",NULL);
	CFont *pOldFont=dc.SelectObject(&font);
	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);
	
	dc.SelectObject(pOldFont);
	CView::OnChar(nChar, nRepCnt, nFlags);
}

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

	CView::OnLButtonDown(nFlags, point);
}

void CRetextView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	m_nWidth+=5;
	CClientDC dc(this);
	TEXTMETRIC tm;
	dc.GetTextMetrics(&tm);
	CRect rect;
	rect.left=0;
	rect.top=200;
	rect.right=m_nWidth;
	rect.bottom=rect.top+tm.tmHeight;
	CString str;
	str.LoadString(IDS_WEIXIN);
	dc.SetTextColor(RGB(255,0,0));
	dc.DrawText(str,rect,DT_LEFT);

	rect.top=150;
	rect.bottom=rect.top+tm.tmHeight;
	dc.DrawText(str,rect,DT_RIGHT);

	CSize sz=dc.GetTextExtent(str);
	if(m_nWidth>sz.cx)
	{
		m_nWidth=0;
		dc.SetTextColor(RGB(0,255,0));
		dc.TextOut(0,200,str);

	}
	

	
	CView::OnTimer(nIDEvent);
}