imageviewdoc.cpp

主要介绍vc++6.0的编程过程

// ImageViewDoc.cpp : implementation of the CImageViewDoc class
//

#include "stdafx.h"
#include "ImageView.h"

#include "ImageViewDoc.h"
#include "ImageViewView.h"
#include "MainFrm.h"
#include "ChildFrm.h"

#include "Brightness.h"

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

/////////////////////////////////////////////////////////////////////////////
// CImageViewDoc

IMPLEMENT_DYNCREATE(CImageViewDoc, CDocument)

BEGIN_MESSAGE_MAP(CImageViewDoc, CDocument)
	//{{AFX_MSG_MAP(CImageViewDoc)
	ON_COMMAND(ID_FILE_SAVE_AS, OnFileSaveAs)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CImageViewDoc construction/destruction

CImageViewDoc::CImageViewDoc()
{
	// TODO: add one-time construction code here

}

CImageViewDoc::~CImageViewDoc()
{
}

BOOL CImageViewDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CImageViewDoc serialization

void CImageViewDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}
}

/////////////////////////////////////////////////////////////////////////////
// CImageViewDoc diagnostics

#ifdef _DEBUG
void CImageViewDoc::AssertValid() const
{
	CDocument::AssertValid();
}

void CImageViewDoc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CImageViewDoc commands

extern char szFilter[];

void CImageViewDoc::OnFileSaveAs() 
{
	static int nIndex = 1;

	CFileDialog FileDlg( FALSE, NULL, NULL, OFN_HIDEREADONLY, szFilter );
	FileDlg.m_ofn.nFilterIndex = (DWORD) nIndex;

	if( FileDlg.DoModal() == IDOK ){
		nIndex = (int) FileDlg.m_ofn.nFilterIndex;
		CMainFrame *pFrame = (CMainFrame *) AfxGetMainWnd();
		CChildFrame *pChild = (CChildFrame *) pFrame->MDIGetActive();
		CImageViewView *pView = (CImageViewView *) pChild->GetActiveView();

		if( nIndex == 5 ){
			if( pView->m_pImageObject->GetNumBits() != 24 ){
				AfxMessageBox( "The image must be 24 bits of color resolution to save as JPEG" );
				return;
				}
			CBrightness Brightness;
			strcpy( Brightness.m_szTitle, "Set Quality" );
			strcpy( Brightness.m_szLabel, "Quality" );
			if( Brightness.DoModal() != IDOK ) return;
			if( pView->m_pImageObject != NULL )
				pView->m_pImageObject->SetQuality( Brightness.m_nBrightness / 2 );
			}

		if( pView->m_pImageObject != NULL ){

			CString PathName = FileDlg.GetPathName();
			int nFindIndex = PathName.Find( "." );
			if( nFindIndex != -1 ) PathName = PathName.Left( nFindIndex );
			PathName += CImageObject::szExtensions[nIndex-1];
			pView->m_pImageObject->Save( PathName );

			CString FileName = FileDlg.GetFileName();
			nFindIndex = FileName.Find( "." );
			if( nFindIndex != -1 ) FileName = FileName.Left( nFindIndex );
			FileName += CImageObject::szExtensions[nIndex-1];
			FileName.MakeUpper();
			pChild->SetWindowText( FileName );

			SetPathName( PathName );

			if( nIndex == 5 ){
				pView->m_pImageObject->Load( PathName );
				pView->InvalidateRect( NULL, FALSE );
				pView->UpdateWindow();
				}
			}
		}

}