functionline.cpp

来自「一个简单的画图程序 可以画点线面等」· C++ 代码 · 共 67 行

// FunctionLine.cpp: implementation of the CFunctionLine class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "SmallCAD203.h"
#include "FunctionLine.h"
extern CSmallCAD203App theApp;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CFunctionLine::CFunctionLine()
{
	m_bIsLButtonDown=FALSE;
	ID=1000;
	l=NULL;

}

CFunctionLine::~CFunctionLine()
{

}
void CFunctionLine::OnLButtonDown(UINT nFlags, CPoint point)
{
	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();
	m_bIsLButtonDown=TRUE;
	l=new CGraphLine;
	l->SetStartPoint(point);
	l->SetEndPoint(point);
	l->SetColor(pDoc->GetCurrentColor());
	l->SetScale(pDoc->GetCurrentScale());
	l->Draw(pView->GetDC());
}
void CFunctionLine::OnLButtonUp(UINT nFlags, CPoint point)
{
	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();
	m_bIsLButtonDown=FALSE;
	l->SetEndPoint(point);
	l->Draw(pView->GetDC());
	pDoc->my_list.InSert(l);
	//pDoc->AddGraph(l);
}
void CFunctionLine::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();
	if(!m_bIsLButtonDown)
	return;
	pDC->SetROP2(R2_NOTXORPEN);
//	CPoint p;
	l->Draw(pDC);
	l->SetEndPoint(point);
	l->Draw(pDC);
//	pDoc->AddGraph(l);
	
	pView->ReleaseDC(pDC);
}