dibsectionview.cpp

wince下将bmp转换为jpeg的程序,用了一个jpeg压缩类,可以移植

// DIBSectionView.cpp : implementation of the CDIBSectionView class
//

#include "stdafx.h"
#include "DIBSection.h"

#include "DIBSectionDoc.h"
#include "DIBSectionView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDIBSectionView

IMPLEMENT_DYNCREATE(CDIBSectionView, CView)

BEGIN_MESSAGE_MAP(CDIBSectionView, CView)
	//{{AFX_MSG_MAP(CDIBSectionView)
		// 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
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDIBSectionView construction/destruction

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

}

CDIBSectionView::~CDIBSectionView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CDIBSectionView drawing

void CDIBSectionView::OnDraw(CDC* pDC)
{
	CDIBSectionDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
/*	if(pDoc->m_DIBSection.GetSafeHandle())
	{
		CRect rect;
		GetClientRect(rect);
	//	pDoc->m_DIBSection.Stretch(pDC, CPoint(0,0), rect.Size());
		pDoc->m_DIBSection.Draw(pDC, CPoint(0,0));
	}*/
	CPaintDC dc(this); // device context for painting
	
	CPen *NewPen=new CPen( PS_SOLID, 2, RGB(50,0,200));
    CPen *oldPen=dc.SelectObject(NewPen);
    dc.MoveTo(0,24);
	dc.LineTo(240,24);
	dc.LineTo(240,187);
	dc.LineTo(0,187);
	
    delete NewPen;
    dc.SelectObject(oldPen);
    
	//pDoc->m_DIBSection.SetBitmap(IDB_PICTURE);
	pDoc->m_DIBSection.Stretch(&dc, CPoint(15,30), CSize(210,150));
}

/////////////////////////////////////////////////////////////////////////////
// CDIBSectionView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDIBSectionView message handlers

void CDIBSectionView::OnFileOpen() 
{
	CDIBSectionDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	
	CString strFilter = "Bitmap Files (*.bmp)|*.bmp|All Files (*.*) |*.*||";
	
	CFileDialog	dlg(TRUE, NULL, NULL, OFN_HIDEREADONLY|OFN_EXPLORER, strFilter, NULL); 
	if (dlg.DoModal() == IDOK) 
    {
        if (pDoc->m_DIBSection.Load(dlg.GetPathName()))
            pDoc->SetTitle(dlg.GetFileTitle());
        else
            AfxMessageBox(_T("Unable to open bitmap file"));
		
		// m_nBitmapID = -1;
        Invalidate();
    }
}