dibdoc.cpp

C:Documents and SettingsAdministrator桌面VC++多媒体特效制作百例CHAR03DibLookEx

// DibDoc.cpp : implementation of the CDibDoc class
//

#include "stdafx.h"
#include "DibLookEx.h"

#include "Dib.h"
#include "DibDoc.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDibDoc

IMPLEMENT_DYNCREATE(CDibDoc, CDocument)

BEGIN_MESSAGE_MAP(CDibDoc, CDocument)
	//{{AFX_MSG_MAP(CDibDoc)
		// 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()

/////////////////////////////////////////////////////////////////////////////
// CDibDoc construction/destruction

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

}

CDibDoc::~CDibDoc()
{
}

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

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)
	
	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CDibDoc diagnostics

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

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

/////////////////////////////////////////////////////////////////////////////
// CDibDoc commands

BOOL CDibDoc::OnOpenDocument(LPCTSTR lpszPathName) 
{
	if (!CDocument::OnOpenDocument(lpszPathName))
		return FALSE;
	
	CFile file;
	CFileException fe;
	if (!file.Open(lpszPathName, CFile::modeRead | CFile::shareDenyWrite, &fe))
	{
		ReportSaveLoadException(lpszPathName, &fe, FALSE, AFX_IDP_FAILED_TO_OPEN_DOC);
		return FALSE;
	}

	DeleteContents();
	BeginWaitCursor();

	// replace calls to Serialize with ReadDIBFile function
	TRY
	{
		m_DIB.Read(file);
	}
	CATCH (CFileException, eLoad)
	{
		file.Abort(); // will not throw an exception
		EndWaitCursor();
		ReportSaveLoadException(lpszPathName, eLoad, FALSE, AFX_IDP_FAILED_TO_OPEN_DOC);
		return FALSE;
	}
	END_CATCH

	EndWaitCursor();

	if (!m_DIB.IsValid())
	{
		// may not be DIB format
		CString strMsg;
		strMsg.LoadString(IDS_CANNOT_LOAD_DIB);
		MessageBox(NULL, strMsg, NULL, MB_ICONINFORMATION | MB_OK);
		return FALSE;
	}
	SetPathName(lpszPathName);
	SetModifiedFlag(FALSE);     // start off with unmodified
	return TRUE;
}

BOOL CDibDoc::OnSaveDocument(LPCTSTR lpszPathName) 
{
	CFile file;
	CFileException fe;

	if (!file.Open(lpszPathName, CFile::modeCreate | CFile::modeReadWrite | CFile::shareExclusive, &fe))
	{
		ReportSaveLoadException(lpszPathName, &fe, TRUE, AFX_IDP_INVALID_FILENAME);
		return FALSE;
	}

	// replace calls to Serialize with SaveDIB function
	BOOL bSuccess = FALSE;
	TRY
	{
		BeginWaitCursor();
		bSuccess = m_DIB.Save(file);
		file.Close();
	}
	CATCH (CException, eSave)
	{
		file.Abort(); // will not throw an exception
		EndWaitCursor();
		ReportSaveLoadException(lpszPathName, eSave, TRUE, AFX_IDP_FAILED_TO_SAVE_DOC);
		return FALSE;
	}
	END_CATCH

	EndWaitCursor();
	SetModifiedFlag(FALSE);     // back to unmodified

	if (!bSuccess)
	{
		// may be other-style DIB (load supported but not save)
		//  or other problem in Save
		CString strMsg;
		strMsg.LoadString(IDS_CANNOT_SAVE_DIB);
		MessageBox(NULL, strMsg, NULL, MB_ICONINFORMATION | MB_OK);
	}

	return TRUE;
}

DWORD CDibDoc::ReadDIBFromHandle(HGLOBAL hGlobal)
{
	DWORD dwResult = m_DIB.ReadFromHandle(hGlobal); 
	SetModifiedFlag(TRUE);
	UpdateAllViews(NULL);
	return dwResult;
}