home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Programming Languages Suite
/
ProgramD2.iso
/
Borland
/
Borland C++ V5.02
/
DIBLK.PAK
/
DIBDOC.CPP
< prev
next >
Wrap
C/C++ Source or Header
|
1997-05-06
|
5KB
|
227 lines
// dibdoc.cpp : implementation of the CDibDoc class
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1995 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.
#include "stdafx.h"
#include "diblook.h"
#include <limits.h>
#include "dibdoc.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CDibDoc
IMPLEMENT_DYNCREATE(CDibDoc, CDocument)
BEGIN_MESSAGE_MAP(CDibDoc, CDocument)
//{{AFX_MSG_MAP(CDibDoc)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDibDoc construction/destruction
CDibDoc::CDibDoc()
{
m_hDIB = NULL;
m_palDIB = NULL;
m_sizeDoc = CSize(1,1); // dummy value to make CScrollView happy
}
CDibDoc::~CDibDoc()
{
if (m_hDIB != NULL)
{
::GlobalFree((HGLOBAL) m_hDIB);
}
if (m_palDIB != NULL)
{
delete m_palDIB;
}
}
BOOL CDibDoc::OnNewDocument()
{
if (!CDocument::OnNewDocument())
return FALSE;
return TRUE;
}
void CDibDoc::InitDIBData()
{
if (m_palDIB != NULL)
{
delete m_palDIB;
m_palDIB = NULL;
}
if (m_hDIB == NULL)
{
return;
}
// Set up document size
LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) m_hDIB);
if (::DIBWidth(lpDIB) > INT_MAX ||::DIBHeight(lpDIB) > INT_MAX)
{
::GlobalUnlock((HGLOBAL) m_hDIB);
::GlobalFree((HGLOBAL) m_hDIB);
m_hDIB = NULL;
CString strMsg;
strMsg.LoadString(IDS_DIB_TOO_BIG);
MessageBox(NULL, strMsg, NULL, MB_ICONINFORMATION | MB_OK);
return;
}
m_sizeDoc = CSize((int) ::DIBWidth(lpDIB), (int) ::DIBHeight(lpDIB));
::GlobalUnlock((HGLOBAL) m_hDIB);
// Create copy of palette
m_palDIB = new CPalette;
if (m_palDIB == NULL)
{
// we must be really low on memory
::GlobalFree((HGLOBAL) m_hDIB);
m_hDIB = NULL;
return;
}
if (::CreateDIBPalette(m_hDIB, m_palDIB) == NULL)
{
// DIB may not have a palette
delete m_palDIB;
m_palDIB = NULL;
return;
}
}
BOOL CDibDoc::OnOpenDocument(LPCTSTR lpszPathName)
{
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_hDIB = ::ReadDIBFile(file);
}
CATCH (CFileException, eLoad)
{
file.Abort(); // will not throw an exception
EndWaitCursor();
ReportSaveLoadException(lpszPathName, eLoad,
FALSE, AFX_IDP_FAILED_TO_OPEN_DOC);
m_hDIB = NULL;
return FALSE;
}
END_CATCH
InitDIBData();
EndWaitCursor();
if (m_hDIB == NULL)
{
// 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 = ::SaveDIB(m_hDIB, 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 SaveDIB
CString strMsg;
strMsg.LoadString(IDS_CANNOT_SAVE_DIB);
MessageBox(NULL, strMsg, NULL, MB_ICONINFORMATION | MB_OK);
}
return bSuccess;
}
void CDibDoc::ReplaceHDIB(HDIB hDIB)
{
if (m_hDIB != NULL)
{
::GlobalFree((HGLOBAL) m_hDIB);
}
m_hDIB = hDIB;
}
/////////////////////////////////////////////////////////////////////////////
// CDibDoc diagnostics
#ifdef _DEBUG
void CDibDoc::AssertValid() const
{
CDocument::AssertValid();
}
void CDibDoc::Dump(CDumpContext& dc) const
{
CDocument::Dump(dc);
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CDibDoc commands