drawview.cpp

实验七 在网络中传输图像：采用C++

// DrawView.cpp : implementation of the CDrawView class
//

#include "stdafx.h"
#include "Draw.h"

#include "DrawDoc.h"
#include "DrawView.h"
#include "Line.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDrawView

IMPLEMENT_DYNCREATE(CDrawView, CView)

BEGIN_MESSAGE_MAP(CDrawView, CView)
	//{{AFX_MSG_MAP(CDrawView)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CDrawView construction/destruction

CDrawView::CDrawView()
{
	// TODO: add construction code here

}

CDrawView::~CDrawView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CDrawView drawing

void CDrawView::OnDraw(CDC* pDC)
{
	CDrawDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	int liCount=pDoc->GetLineCount();
	if(liCount)
	{
		int liPos;
		CLine *lptLine;
		for(liPos=0;liPos<liCount;liPos++)
		{
			lptLine=pDoc->GetLine(liPos);
			lptLine->Draw(pDC);
		}
	}

}

/////////////////////////////////////////////////////////////////////////////
// CDrawView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDrawView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDrawView message handlers



void CDrawView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	SetCapture();
	m_ptPrevP=point;

	CView::OnLButtonDown(nFlags, point);
}

void CDrawView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(GetCapture()==this)
		ReleaseCapture();

	CView::OnLButtonUp(nFlags, point);
}

void CDrawView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if((nFlags & MK_LBUTTON)==MK_LBUTTON)
	{
		if(GetCapture()==this)
		{
			CClientDC dc(this);
			CLine* pLine=GetDocument()->AddLine(m_ptPrevP,point);
			pLine->Draw(&dc);
			m_ptPrevP=point;

			char* pBuf=new char[sizeof(CLine)];
			memcpy(pBuf,(char*)pLine,sizeof(CLine));
			GetDocument()->m_sConnectSocket.Send((LPCTSTR)(pBuf),sizeof(CLine));

		}
	}
	CView::OnMouseMove(nFlags, point);
}