myexpview.cpp

1. 实现BMP文件到JPEG文件的压缩转换。 2. 自选：实现从JPEG文件到BMP文件转换。 3. 采用C/C++编写程序

// MyExpView.cpp : implementation of the CMyExpView class
//

#include "stdafx.h"
#include "MyExp.h"
#include"MainFrm.h"
#include "MyExpDoc.h"
#include "MyExpView.h"
#include"Dib.h"




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

/////////////////////////////////////////////////////////////////////////////
// CMyExpView

IMPLEMENT_DYNCREATE(CMyExpView, CScrollView)

BEGIN_MESSAGE_MAP(CMyExpView, CScrollView)
	//{{AFX_MSG_MAP(CImageProcessingView)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CMyExpView construction/destruction

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

}

CMyExpView::~CMyExpView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMyExpView drawing

void CMyExpView::OnDraw(CDC* pDC)
{
	CMyExpDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here

	//CSize sizeDibDisplay;		
	
	if(!pDoc->m_pDib->IsEmpty())
			pDoc->m_pDib->Display(pDC, 0, 0);

}

void CMyExpView::OnInitialUpdate() 
{
	//CView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	CScrollView::OnInitialUpdate();

		CMyExpDoc* pDoc = GetDocument();

	CSize sizeTotal(pDoc->m_pDib->GetWidth(), pDoc->m_pDib->GetHeight());
	SetScrollSizes(MM_TEXT, sizeTotal);
	
	CMainFrame* pAppFrame = (CMainFrame*) AfxGetApp()->m_pMainWnd;
	ASSERT_KINDOF(CMainFrame, pAppFrame);
	CRect rc;
	pAppFrame->GetClientRect(&rc);
	if (rc.Width() >= sizeTotal.cx && rc.Height() >= sizeTotal.cy &&
		(sizeTotal.cx>0 || sizeTotal.cy>0))
		ResizeParentToFit(FALSE);

}


/////////////////////////////////////////////////////////////////////////////
// CMyExpView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyExpView diagnostics

#ifdef _DEBUG


void CMyExpView::AssertValid() const
{
	CScrollView::AssertValid();
}

void CMyExpView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}


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

/////////////////////////////////////////////////////////////////////////////
// CMyExpView message handlers