www.pudn.com > DrawLine.rar > DrawLineView.cpp

// DrawLineView.cpp : implementation of the CDrawLineView class 
// 
 
#include "stdafx.h" 
#include "DrawLine.h" 
 
#include "DrawLineDoc.h" 
#include "DrawLineView.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CDrawLineView 
 
IMPLEMENT_DYNCREATE(CDrawLineView, CView) 
 
BEGIN_MESSAGE_MAP(CDrawLineView, CView) 
	//{{AFX_MSG_MAP(CDrawLineView) 
	ON_COMMAND(ID_DRAWLINE, OnDrawline) 
	ON_WM_TIMER() 
	ON_COMMAND(ID_STOP, OnStop) 
	//}}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() 
 
///////////////////////////////////////////////////////////////////////////// 
// CDrawLineView construction/destruction 
 
CDrawLineView::CDrawLineView() 
{ 
	begin[0].x=100; 
	begin[0].y=100; 
	begin[1].x=350; 
	begin[1].y=400; 
	rise[0].x=3; 
	rise[0].y=5; 
	rise[1].x=-5; 
	rise[1].y=-3; 
	// TODO: add construction code here 
} 
 
CDrawLineView::~CDrawLineView() 
{ 
} 
 
BOOL CDrawLineView::PreCreateWindow(CREATESTRUCT& cs) 
{ 
	// TODO: Modify the Window class or styles here by modifying 
	//  the CREATESTRUCT cs 
 
	return CView::PreCreateWindow(cs); 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CDrawLineView drawing 
 
void CDrawLineView::OnDraw(CDC* pDC) 
{ 
	CDrawLineDoc* pDoc = GetDocument(); 
	ASSERT_VALID(pDoc); 
 
 
	// TODO: add draw code for native data here 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CDrawLineView printing 
 
BOOL CDrawLineView::OnPreparePrinting(CPrintInfo* pInfo) 
{ 
	// default preparation 
	return DoPreparePrinting(pInfo); 
} 
 
void CDrawLineView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) 
{ 
	// TODO: add extra initialization before printing 
} 
 
void CDrawLineView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) 
{ 
	// TODO: add cleanup after printing 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CDrawLineView diagnostics 
 
#ifdef _DEBUG 
void CDrawLineView::AssertValid() const 
{ 
	CView::AssertValid(); 
} 
 
void CDrawLineView::Dump(CDumpContext& dc) const 
{ 
	CView::Dump(dc); 
} 
 
CDrawLineDoc* CDrawLineView::GetDocument() // non-debug version is inline 
{ 
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawLineDoc))); 
	return (CDrawLineDoc*)m_pDocument; 
} 
#endif //_DEBUG 
 
///////////////////////////////////////////////////////////////////////////// 
// CDrawLineView message handlers 
 
COLORREF CDrawLineView::SetColor(int x,int y) 
{ 
  long red,blue,green; 
  int px,py; 
  CRect rect; 
  GetClientRect(&rect); 
  px=rect.Width(); 
  py=rect.Height(); 
  red=y*255/py; 
  blue=((py-y)*255/py+x*255/px)/2; 
  green=((py-y)*255/py+(px-x)*255/px)/2; 
  return RGB(red+LineRand(2),green+LineRand(2),blue+LineRand(2)); 
} 
 
UINT CDrawLineView::LineRand(UINT max) 
{ 
	int nRand=rand(); 
	float fLine=(float)max/RAND_MAX; 
	float fVal=(float)fLine*nRand+0.5F; 
	return (UINT)fVal; 
 
} 
 
void CDrawLineView::OnDrawline()  
{ 
    SetTimer(1,100,NULL); 
	// TODO: Add your command handler code here 
	 
} 
 
void CDrawLineView::OnTimer(UINT nIDEvent)  
{ 
	// TODO: Add your message handler code here and/or call default 
   CClientDC dc(this); 
   BeginDrawLine(&dc); 
	CView::OnTimer(nIDEvent); 
} 
 
void CDrawLineView::BeginDrawLine(CClientDC *pDC) 
{ 
	CString str="»­Οί"; 
	pDC->TextOut(6,6,str); 
	CPen pen; 
	pen.CreatePen(PS_SOLID,1,SetColor(begin[1].x,begin[1].y)); 
	CPen *pOldpen=pDC->SelectObject(&pen); 
	pDC->MoveTo(begin[0].x,begin[0].y); 
	pDC->LineTo(begin[1].x,begin[1].y); 
 
	for(int i=0;i<2;i++) 
	{ 
		begin[i].x=begin[i].x+rise[i].x; 
		begin[i].y=begin[i].y+rise[i].y; 
		if(begin[i].x<=5||begin[i].x>=630) rise[i].x=-rise[i].x; 
		if(begin[i].y<=5||begin[i].y>=490) rise[i].y=-rise[i].y; 
	} 
	pDC->SelectObject(pOldpen); 
 
} 
 
void CDrawLineView::OnStop()  
{ 
    KillTimer(1);	 
}