functionhandline.cpp

一个简单的画图程序 可以画点线面等

// FunctionHandLine.cpp: implementation of the CFunctionHandLine class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "SmallCAD203.h"
#include "FunctionHandLine.h"
#include "MainFrm.h" 
#include "SmallCAD203Doc.h"
#include "SmallCAD203View.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
extern CSmallCAD203App theApp;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CFunctionHandLine::CFunctionHandLine()
{
	l=NULL;
	bIsLButtonDown=FALSE;

}

CFunctionHandLine::~CFunctionHandLine()
{

}
void CFunctionHandLine::OnLButtonDown(UINT nFlags, CPoint point)
{
//	startPoint=point;
//	endPoint=point;
	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();

	bIsLButtonDown=TRUE;
	CDC *pDC=pView->GetDC();
	l=new CGraphLine;
	l->SetStartPoint(point);
	l->SetEndPoint(point);
	l->SetColor(pDoc->GetCurrentColor());
	l->SetScale(pDoc->GetCurrentScale());
	l->Draw(pDC);
	pView->ReleaseDC(pDC);
}
void CFunctionHandLine::OnLButtonUp(UINT nFlags, CPoint point)
{
	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();
	CDC *pDC=pView->GetDC();
	bIsLButtonDown = FALSE;
	l->SetEndPoint(point);
	l->Draw(pDC);
	pDoc->my_list.InSert(l);
		//pDoc->AddGraph(l);
	pView->ReleaseDC(pDC);
}
void CFunctionHandLine::OnMouseMove(UINT nFlags, CPoint point)
{

	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();
//	bIsLButtonDown=FALSE;
	CDC *pDC=pView->GetDC();
//	pDC->SetROP2(R2_NOTXORPEN);
//	CPoint p;
//	l->Draw(pDC);
	if(!bIsLButtonDown)
		return;
	l->SetEndPoint(point);
	l->Draw(pDC);
	l->SetStartPoint(point);
	//pDoc->AddGraph(l);
	
	pView->ReleaseDC(pDC);
	
}

void CFunctionHandLine::Draw()
{
//	CPen pen;
//	pen.CreatePen(PS_SOLID,m_scale,m_color);
//	pDC->SelectObject(&pen);
//	pDC->MoveTo(startPoint);
//	pDC->LineTo(endPoint);
//	startPoint=endPoint;

}