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Diffstat (limited to 'svtools/source/misc/imageresourceaccess.cxx')
| -rw-r--r-- | svtools/source/misc/imageresourceaccess.cxx | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/svtools/source/misc/imageresourceaccess.cxx b/svtools/source/misc/imageresourceaccess.cxx new file mode 100644 index 000000000000..b27bf6fa0174 --- /dev/null +++ b/svtools/source/misc/imageresourceaccess.cxx @@ -0,0 +1,210 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: imageresourceaccess.cxx,v $ + * $Revision: 1.5 $ + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_svtools.hxx" + +#ifndef SVTOOLS_SOURCE_MISC_IMAGERESOURCEACCESS_HXX +#include "imageresourceaccess.hxx" +#endif + +/** === begin UNO includes === **/ +#include <com/sun/star/io/NotConnectedException.hpp> +#include <com/sun/star/io/XSeekable.hpp> +#include <com/sun/star/graphic/XGraphicProvider.hpp> +#include <com/sun/star/io/XStream.hpp> +/** === end UNO includes === **/ +#include <unotools/ucbstreamhelper.hxx> +#include <tools/stream.hxx> +#include <unotools/streamwrap.hxx> +#include <cppuhelper/implbase2.hxx> + +//........................................................................ +namespace svt +{ +//........................................................................ + +#define GRAPHOBJ_URLPREFIX "vnd.sun.star.GraphicObject:" + + 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(); + } + + //==================================================================== + //= GraphicAccess + //==================================================================== + //-------------------------------------------------------------------- + bool GraphicAccess::isSupportedURL( const ::rtl::OUString& _rURL ) + { + ::rtl::OUString sIndicator( RTL_CONSTASCII_USTRINGPARAM( "private:resource/" ) ); + return ( ( _rURL.indexOf( sIndicator ) == 0 ) || ( _rURL.compareToAscii( GRAPHOBJ_URLPREFIX, RTL_CONSTASCII_LENGTH( GRAPHOBJ_URLPREFIX ) ) == 0 ) ); + } + + //-------------------------------------------------------------------- + SvStream* GraphicAccess::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(), "GraphicAccess::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(), "GraphicAccess::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, "GraphicAccess::getImageStream: caught an exception!" ); + } + + return pReturn; + } + + //-------------------------------------------------------------------- + Reference< XInputStream > GraphicAccess::getImageXStream( const Reference< XMultiServiceFactory >& _rxORB, const ::rtl::OUString& _rImageResourceURL ) + { + return new OSeekableInputStreamWrapper( getImageStream( _rxORB, _rImageResourceURL ), sal_True ); // take ownership + } + +//........................................................................ +} // namespace svt +//........................................................................ + |