waveletview.cpp

this walet there is pictures in it you can debug it

// waveletView.cpp : implementation of the CWaveletView class
//

#include "stdafx.h"
#include "wavelet.h"

#include "waveletDoc.h"
#include "waveletView.h"
#include "MainFrm.h"

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

/////////////////////////////////////////////////////////////////////////////
// CWaveletView

IMPLEMENT_DYNCREATE(CWaveletView, CScrollView)

BEGIN_MESSAGE_MAP(CWaveletView, CScrollView)
	//{{AFX_MSG_MAP(CWaveletView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWaveletView construction/destruction

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

}

CWaveletView::~CWaveletView()
{
}

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

	return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CWaveletView drawing

void CWaveletView::OnDraw(CDC* pDC)
{
	CWaveletDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	if( pDoc->m_pTransfered == NULL)
		return ;

	unsigned char* pBitmap = pDoc -> m_pBitmap;
	LPBITMAPINFO lpBitmapInfo = (LPBITMAPINFO)(pBitmap + 14);
	unsigned char* pBitmapData = pDoc->m_pTransfered;
	unsigned long biHeight = ((LPBITMAPINFOHEADER)lpBitmapInfo)->biHeight;
	unsigned long biWidth = ((LPBITMAPINFOHEADER)lpBitmapInfo)->biWidth;

	CRect rect;
	GetClientRect(&rect);
	long originx = 0;
	long originy = 0;
	if((unsigned long)(rect.Width()) > biWidth)
		originx = (rect.Width() - biWidth)>>1;
	if((unsigned long)(rect.Height()) > biHeight)
		originy = (rect.Height() - biHeight)>>1;

	SetDIBitsToDevice(pDC->m_hDC, originx, originy, biWidth, biHeight, 0, 0, 0, biHeight,
					  pBitmapData, lpBitmapInfo, DIB_RGB_COLORS);
	return;
}

/////////////////////////////////////////////////////////////////////////////
// CWaveletView diagnostics

#ifdef _DEBUG
void CWaveletView::AssertValid() const
{
	CScrollView::AssertValid();
}

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

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

/////////////////////////////////////////////////////////////////////////////
// CWaveletView message handlers

void CWaveletView::OnInitialUpdate() 
{
    CScrollView::OnInitialUpdate();

	CWaveletDoc* pDoc = GetDocument();
	unsigned char* pBitmap = pDoc -> m_pBitmap;
	LPBITMAPINFO lpBitmapInfo = (LPBITMAPINFO)(pBitmap + 14);

	int biHeight = ((LPBITMAPINFOHEADER)lpBitmapInfo)->biHeight;
	int biWidth = ((LPBITMAPINFOHEADER)lpBitmapInfo)->biWidth;

	CSize sizeTotal(biWidth, biHeight);
	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);
	return;
	
}

void CWaveletView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo) 
{
	// TODO: Add your specialized code here and/or call the base class
	

}

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