imageoperationview.cpp

这是书上的代码

// ImageOperationView.cpp : implementation of the CImageOperationView class
//

#include "stdafx.h"
#include "ImageOperation.h"
#include "ImageOperationDlg.h"

#include "ImageOperationDoc.h"
#include "ImageOperationView.h"
#include "MainFrm.h"
#include "ChildFrm.h"
#include "Rotate.h"

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

/////////////////////////////////////////////////////////////////////////////
// CImageOperationView

IMPLEMENT_DYNCREATE(CImageOperationView, CScrollView)

BEGIN_MESSAGE_MAP(CImageOperationView, CScrollView)
	//{{AFX_MSG_MAP(CImageOperationView)
	ON_COMMAND(ID_PICTURE_ROTATE, OnPictureRotate)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CImageOperationView construction/destruction

CImageOperationView::CImageOperationView()
{
	// TODO: add construction code here
	m_pImageObject=NULL;
	m_bImageLoaded = FALSE;
}

CImageOperationView::~CImageOperationView()
{
if(m_pImageObject!=NULL) 
   delete m_pImageObject;
}

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

	return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CImageOperationView drawing

void CImageOperationView::OnDraw(CDC* pDC)
{
	CImageOperationDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	if( !m_bImageLoaded )
	{
		CString PathName = pDoc->GetPathName ();
		m_pImageObject = new CImageObject( PathName.GetBuffer( 3 ), pDC );
		CMainFrame *pFrame = (CMainFrame *) AfxGetMainWnd();
		CChildFrame *pChild = (CChildFrame *) pFrame->MDIGetActive();
		pChild->m_pImageObject=m_pImageObject;
		pChild->m_nWidth = m_pImageObject->GetWidth(); 
       	pChild->m_nHeight = m_pImageObject->GetHeight(); 
		pChild->SetWindowPos( NULL, 0, 0, 2500, 2500, SWP_NOZORDER | SWP_NOMOVE );
        pChild->SendMessage(WM_SETFOCUS);
 		m_bImageLoaded = TRUE;
	}
	if( GetFocus() == this ) 
	m_pImageObject->SetPalette( pDC );
	m_pImageObject->Draw( pDC );

}

/////////////////////////////////////////////////////////////////////////////
// CImageOperationView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CImageOperationView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////


void CImageOperationView::OnInitialUpdate() 
{
	CView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
  	CSize sizeTotal;
	// TODO: calculate the total size of this view
	sizeTotal.cx = sizeTotal.cy = 800;
	SetScrollSizes(MM_TEXT, sizeTotal);

}





void CImageOperationView::OnPictureRotate() 
{
	// TODO: Add your command handler code here

	if( m_pImageObject == NULL ) return;
	
	CRotate RotateDlg;
	RotateDlg.m_RotateRadio = 0;
	if( RotateDlg.DoModal() == IDOK )
	{
		m_pImageObject->Rotate( 90 + RotateDlg.m_RotateRadio * 90 );
			Invalidate();
	}
	ResizeWindow();
}

void CImageOperationView::ResizeWindow()
{

	CSize SizeTotal;
	SizeTotal.cx = m_pImageObject->GetWidth();
	SizeTotal.cy = m_pImageObject->GetHeight();
	SetScrollSizes (MM_TEXT, SizeTotal);

	CMainFrame *pFrame = (CMainFrame *) AfxGetMainWnd();
	CChildFrame *pChild = (CChildFrame *) pFrame->MDIGetActive();
	pChild->m_nWidth = m_pImageObject->GetWidth(); 
	pChild->m_nHeight = m_pImageObject->GetHeight(); 
	pChild->SetWindowPos( NULL, 0, 0, 2500, 2500, SWP_NOZORDER | SWP_NOMOVE );

}