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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: DTransHelper.cxx,v $
*
* $Revision: 1.13 $
*
* last change: $Author: vg $ $Date: 2007-03-26 15:06:56 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_dtrans.hxx"
//------------------------------------------------------------------------
// includes
//------------------------------------------------------------------------
#ifndef _RTL_USTRING_H_
#include <rtl/ustring.h>
#endif
#ifndef _OSL_DIAGNOSE_H_
#include <osl/diagnose.h>
#endif
#ifndef _DTRANSHELPER_HXX_
#include "DTransHelper.hxx"
#endif
//------------------------------------------------------------------------
// implementation
//------------------------------------------------------------------------
CStgTransferHelper::CStgTransferHelper( sal_Bool bAutoInit,
HGLOBAL hGlob,
sal_Bool bDelStgOnRelease ) :
m_lpStream( NULL ),
m_bDelStgOnRelease( bDelStgOnRelease )
{
if ( bAutoInit )
init( hGlob, m_bDelStgOnRelease );
}
//------------------------------------------------------------------------
// dtor
//------------------------------------------------------------------------
CStgTransferHelper::~CStgTransferHelper( )
{
if ( m_lpStream )
m_lpStream->Release( );
}
//------------------------------------------------------------------------
// TransferData into the
//------------------------------------------------------------------------
void SAL_CALL CStgTransferHelper::write( const void* lpData, ULONG cb, ULONG* cbWritten )
{
HRESULT hr = E_FAIL;
if ( m_lpStream )
hr = m_lpStream->Write( lpData, cb, cbWritten );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
#if OSL_DEBUG_LEVEL > 0
HGLOBAL hGlob;
hr = GetHGlobalFromStream( m_lpStream, &hGlob );
OSL_ASSERT( SUCCEEDED( hr ) );
/*DWORD dwSize =*/ GlobalSize( hGlob );
/*LPVOID lpdbgData =*/ GlobalLock( hGlob );
GlobalUnlock( hGlob );
#endif
}
//------------------------------------------------------------------------
// read
//------------------------------------------------------------------------
void SAL_CALL CStgTransferHelper::read( LPVOID pv, ULONG cb, ULONG* pcbRead )
{
HRESULT hr = E_FAIL;
if ( m_lpStream )
hr = m_lpStream->Read( pv, cb , pcbRead );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
}
//------------------------------------------------------------------------
// GetHGlobal
//------------------------------------------------------------------------
HGLOBAL SAL_CALL CStgTransferHelper::getHGlobal( ) const
{
OSL_ASSERT( m_lpStream );
HGLOBAL hGlob = NULL;
if ( m_lpStream )
{
HRESULT hr = GetHGlobalFromStream( m_lpStream, &hGlob );
if ( FAILED( hr ) )
hGlob = NULL;
}
return hGlob;
}
//------------------------------------------------------------------------
// getIStream
//------------------------------------------------------------------------
void SAL_CALL CStgTransferHelper::getIStream( LPSTREAM* ppStream )
{
OSL_ASSERT( ppStream );
*ppStream = m_lpStream;
if ( *ppStream )
static_cast< LPUNKNOWN >( *ppStream )->AddRef( );
}
//------------------------------------------------------------------------
// Init
//------------------------------------------------------------------------
void SAL_CALL CStgTransferHelper::init( SIZE_T newSize,
sal_uInt32 uiFlags,
sal_Bool bDelStgOnRelease )
{
cleanup( );
m_bDelStgOnRelease = bDelStgOnRelease;
HGLOBAL hGlob = GlobalAlloc( uiFlags, newSize );
if ( NULL == hGlob )
throw CStgTransferException( STG_E_MEDIUMFULL );
HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
if ( FAILED( hr ) )
{
GlobalFree( hGlob );
m_lpStream = NULL;
throw CStgTransferException( hr );
}
#if OSL_DEBUG_LEVEL > 0
STATSTG statstg;
hr = m_lpStream->Stat( &statstg, STATFLAG_DEFAULT );
OSL_ASSERT( SUCCEEDED( hr ) );
#endif
}
//------------------------------------------------------------------------
// Init
//------------------------------------------------------------------------
void SAL_CALL CStgTransferHelper::init( HGLOBAL hGlob,
sal_Bool bDelStgOnRelease )
{
cleanup( );
m_bDelStgOnRelease = bDelStgOnRelease;
HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
}
//------------------------------------------------------------------------
// free the global memory and invalidate the stream pointer
//------------------------------------------------------------------------
void SAL_CALL CStgTransferHelper::cleanup( )
{
if ( m_lpStream && !m_bDelStgOnRelease )
{
HGLOBAL hGlob;
GetHGlobalFromStream( m_lpStream, &hGlob );
GlobalFree( hGlob );
}
if ( m_lpStream )
{
m_lpStream->Release( );
m_lpStream = NULL;
}
}
//------------------------------------------------------------------------
// return the size of memory we point to
//------------------------------------------------------------------------
sal_uInt32 SAL_CALL CStgTransferHelper::memSize( CLIPFORMAT cf ) const
{
DWORD dwSize = 0;
if ( NULL != m_lpStream )
{
HGLOBAL hGlob;
GetHGlobalFromStream( m_lpStream, &hGlob );
if ( CF_TEXT == cf || RegisterClipboardFormat( "HTML Format" ) == cf )
{
sal_Char* pText = static_cast< sal_Char* >( GlobalLock( hGlob ) );
if ( pText )
{
dwSize = strlen(pText) + 1; // strlen + trailing '\0'
GlobalUnlock( hGlob );
}
}
else if ( CF_UNICODETEXT == cf )
{
sal_Unicode* pText = static_cast< sal_Unicode* >( GlobalLock( hGlob ) );
if ( pText )
{
dwSize = rtl_ustr_getLength( pText ) * sizeof( sal_Unicode );
GlobalUnlock( hGlob );
}
}
else
dwSize = GlobalSize( hGlob );
}
return dwSize;
}
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