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/*************************************************************************
*
* $RCSfile: imageresourceaccess.cxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: rt $ $Date: 2004-07-23 10:47:39 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 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
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef SVTOOLS_SOURCE_MISC_IMAGERESOURCEACCESS_HXX
#include "imageresourceaccess.hxx"
#endif
/** === begin UNO includes === **/
#ifndef _COM_SUN_STAR_IO_NOTCONNECTEDEXCEPTION_HPP_
#include <com/sun/star/io/NotConnectedException.hpp>
#endif
#ifndef _COM_SUN_STAR_IO_XSEEKABLE_HPP_
#include <com/sun/star/io/XSeekable.hpp>
#endif
#ifndef _COM_SUN_STAR_GRAPHIC_XGRAPHICPROVIDER_HPP_
#include <com/sun/star/graphic/XGraphicProvider.hpp>
#endif
#ifndef _COM_SUN_STAR_IO_XSTREAM_HPP_
#include <com/sun/star/io/XStream.hpp>
#endif
/** === end UNO includes === **/
#ifndef _UNTOOLS_UCBSTREAMHELPER_HXX
#include <unotools/ucbstreamhelper.hxx>
#endif
#ifndef _STREAM_HXX
#include <tools/stream.hxx>
#endif
#ifndef _UTL_STREAM_WRAPPER_HXX_
#include <unotools/streamwrap.hxx>
#endif
#ifndef _CPPUHELPER_IMPLBASE2_HXX_
#include <cppuhelper/implbase2.hxx>
#endif
//........................................................................
namespace svt
{
//........................................................................
using namespace ::utl;
using namespace ::comphelper;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::graphic;
//====================================================================
//= StreamSupplier
//====================================================================
typedef ::cppu::WeakImplHelper2 < XStream
, XSeekable
> StreamSupplier_Base;
class StreamSupplier : public StreamSupplier_Base
{
private:
Reference< XInputStream > m_xInput;
Reference< XOutputStream > m_xOutput;
Reference< XSeekable > m_xSeekable;
public:
StreamSupplier( const Reference< XInputStream >& _rxInput, const Reference< XOutputStream >& _rxOutput );
protected:
// XStream
virtual Reference< XInputStream > SAL_CALL getInputStream( ) throw (RuntimeException);
virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) throw (RuntimeException);
// XSeekable
virtual void SAL_CALL seek( ::sal_Int64 location ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual ::sal_Int64 SAL_CALL getPosition( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual ::sal_Int64 SAL_CALL getLength( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
};
//--------------------------------------------------------------------
StreamSupplier::StreamSupplier( const Reference< XInputStream >& _rxInput, const Reference< XOutputStream >& _rxOutput )
:m_xInput( _rxInput )
,m_xOutput( _rxOutput )
{
m_xSeekable = m_xSeekable.query( m_xInput );
if ( !m_xSeekable.is() )
m_xSeekable = m_xSeekable.query( m_xOutput );
OSL_ENSURE( m_xSeekable.is(), "StreamSupplier::StreamSupplier: at least one of both must be seekable!" );
}
//--------------------------------------------------------------------
Reference< XInputStream > SAL_CALL StreamSupplier::getInputStream( ) throw (RuntimeException)
{
return m_xInput;
}
//--------------------------------------------------------------------
Reference< XOutputStream > SAL_CALL StreamSupplier::getOutputStream( ) throw (RuntimeException)
{
return m_xOutput;
}
//--------------------------------------------------------------------
void SAL_CALL StreamSupplier::seek( ::sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException)
{
if ( !m_xSeekable.is() )
throw NotConnectedException();
m_xSeekable->seek( location );
}
//--------------------------------------------------------------------
::sal_Int64 SAL_CALL StreamSupplier::getPosition( ) throw (IOException, RuntimeException)
{
if ( !m_xSeekable.is() )
throw NotConnectedException();
return m_xSeekable->getPosition();
}
//--------------------------------------------------------------------
::sal_Int64 SAL_CALL StreamSupplier::getLength( ) throw (IOException, RuntimeException)
{
if ( !m_xSeekable.is() )
throw NotConnectedException();
return m_xSeekable->getLength();
}
//====================================================================
//= ImageResourceAccess
//====================================================================
//--------------------------------------------------------------------
bool ImageResourceAccess::isImageResourceURL( const ::rtl::OUString& _rURL )
{
::rtl::OUString sIndicator( RTL_CONSTASCII_USTRINGPARAM( "private:resource/" ) );
return _rURL.indexOf( sIndicator ) == 0;
}
//--------------------------------------------------------------------
SvStream* ImageResourceAccess::getImageStream( const Reference< XMultiServiceFactory >& _rxORB, const ::rtl::OUString& _rImageResourceURL )
{
SvStream* pReturn = NULL;
try
{
// get a GraphicProvider
Reference< XGraphicProvider > xProvider;
if ( _rxORB.is() )
xProvider = xProvider.query( _rxORB->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.graphic.GraphicProvider" ) ) ) );
OSL_ENSURE( xProvider.is(), "ImageResourceAccess::getImageStream: could not create a graphic provider!" );
if ( !xProvider.is() )
return pReturn;
// let it create a graphic from the given URL
Sequence< PropertyValue > aMediaProperties( 1 );
aMediaProperties[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "URL" ) );
aMediaProperties[0].Value <<= _rImageResourceURL;
Reference< XGraphic > xGraphic( xProvider->queryGraphic( aMediaProperties ) );
OSL_ENSURE( xGraphic.is(), "ImageResourceAccess::getImageStream: the provider did not give us a graphic object!" );
if ( !xGraphic.is() )
return pReturn;
// copy the graphic to a in-memory buffer
SvMemoryStream* pMemBuffer = new SvMemoryStream;
Reference< XStream > xBufferAccess = new StreamSupplier(
new OSeekableInputStreamWrapper( *pMemBuffer ),
new OSeekableOutputStreamWrapper( *pMemBuffer )
);
aMediaProperties.realloc( 2 );
aMediaProperties[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "OutputStream" ) );
aMediaProperties[0].Value <<= xBufferAccess;
aMediaProperties[1].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "MimeType" ) );
aMediaProperties[1].Value <<= ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "image/png" ) );
xProvider->storeGraphic( xGraphic, aMediaProperties );
pMemBuffer->Seek( 0 );
pReturn = pMemBuffer;
}
catch( const Exception& )
{
OSL_ENSURE( sal_False, "ImageResourceAccess::getImageStream: caught an exception!" );
}
return pReturn;
}
//--------------------------------------------------------------------
Reference< XInputStream > ImageResourceAccess::getImageXStream( const Reference< XMultiServiceFactory >& _rxORB, const ::rtl::OUString& _rImageResourceURL )
{
return new OSeekableInputStreamWrapper( getImageStream( _rxORB, _rImageResourceURL ), sal_True ); // take ownership
}
//........................................................................
} // namespace svt
//........................................................................
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