203 lines
8.8 KiB
C++
203 lines
8.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include <svtools/imageresourceaccess.hxx>
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#include <com/sun/star/io/NotConnectedException.hpp>
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#include <com/sun/star/io/XSeekable.hpp>
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#include <com/sun/star/graphic/GraphicProvider.hpp>
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#include <com/sun/star/graphic/XGraphicProvider.hpp>
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#include <com/sun/star/io/XStream.hpp>
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#include <unotools/ucbstreamhelper.hxx>
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#include <tools/stream.hxx>
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#include <unotools/streamwrap.hxx>
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#include <cppuhelper/implbase2.hxx>
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#include <comphelper/componentcontext.hxx>
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//........................................................................
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namespace svt
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{
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//........................................................................
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using namespace ::utl;
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using namespace ::comphelper;
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using namespace ::com::sun::star::io;
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star::lang;
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using namespace ::com::sun::star::beans;
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using namespace ::com::sun::star::graphic;
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//====================================================================
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//= StreamSupplier
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//====================================================================
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typedef ::cppu::WeakImplHelper2 < XStream
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, XSeekable
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> StreamSupplier_Base;
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class StreamSupplier : public StreamSupplier_Base
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{
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private:
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Reference< XInputStream > m_xInput;
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Reference< XOutputStream > m_xOutput;
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Reference< XSeekable > m_xSeekable;
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public:
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StreamSupplier( const Reference< XInputStream >& _rxInput, const Reference< XOutputStream >& _rxOutput );
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protected:
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// XStream
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virtual Reference< XInputStream > SAL_CALL getInputStream( ) throw (RuntimeException);
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virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) throw (RuntimeException);
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// XSeekable
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virtual void SAL_CALL seek( ::sal_Int64 location ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
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virtual ::sal_Int64 SAL_CALL getPosition( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
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virtual ::sal_Int64 SAL_CALL getLength( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
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};
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//--------------------------------------------------------------------
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StreamSupplier::StreamSupplier( const Reference< XInputStream >& _rxInput, const Reference< XOutputStream >& _rxOutput )
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:m_xInput( _rxInput )
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,m_xOutput( _rxOutput )
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{
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m_xSeekable = m_xSeekable.query( m_xInput );
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if ( !m_xSeekable.is() )
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m_xSeekable = m_xSeekable.query( m_xOutput );
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OSL_ENSURE( m_xSeekable.is(), "StreamSupplier::StreamSupplier: at least one of both must be seekable!" );
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}
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//--------------------------------------------------------------------
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Reference< XInputStream > SAL_CALL StreamSupplier::getInputStream( ) throw (RuntimeException)
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{
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return m_xInput;
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}
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//--------------------------------------------------------------------
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Reference< XOutputStream > SAL_CALL StreamSupplier::getOutputStream( ) throw (RuntimeException)
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{
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return m_xOutput;
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}
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//--------------------------------------------------------------------
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void SAL_CALL StreamSupplier::seek( ::sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException)
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{
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if ( !m_xSeekable.is() )
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throw NotConnectedException();
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m_xSeekable->seek( location );
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}
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//--------------------------------------------------------------------
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::sal_Int64 SAL_CALL StreamSupplier::getPosition( ) throw (IOException, RuntimeException)
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{
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if ( !m_xSeekable.is() )
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throw NotConnectedException();
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return m_xSeekable->getPosition();
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}
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//--------------------------------------------------------------------
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::sal_Int64 SAL_CALL StreamSupplier::getLength( ) throw (IOException, RuntimeException)
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{
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if ( !m_xSeekable.is() )
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throw NotConnectedException();
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return m_xSeekable->getLength();
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}
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//====================================================================
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//= GraphicAccess
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//====================================================================
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//--------------------------------------------------------------------
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bool GraphicAccess::isSupportedURL( const ::rtl::OUString& _rURL )
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{
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if ( ( _rURL.indexOfAsciiL( RTL_CONSTASCII_STRINGPARAM( "private:resource/" ) ) == 0 )
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|| ( _rURL.indexOfAsciiL( RTL_CONSTASCII_STRINGPARAM( "private:graphicrepository/" ) ) == 0 )
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|| ( _rURL.indexOfAsciiL( RTL_CONSTASCII_STRINGPARAM( "private:standardimage/" ) ) == 0 )
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|| ( _rURL.indexOfAsciiL( RTL_CONSTASCII_STRINGPARAM( "vnd.sun.star.GraphicObject:" ) ) == 0 )
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|| ( _rURL.indexOfAsciiL( RTL_CONSTASCII_STRINGPARAM( "vnd.sun.star.extension://" ) ) == 0 )
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)
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return true;
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return false;
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}
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//--------------------------------------------------------------------
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SvStream* GraphicAccess::getImageStream( const Reference< XMultiServiceFactory >& _rxORB, const ::rtl::OUString& _rImageResourceURL )
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{
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SvStream* pReturn = NULL;
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try
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{
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// get a GraphicProvider
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Reference< XGraphicProvider > xProvider = ::com::sun::star::graphic::GraphicProvider::create(comphelper::ComponentContext(_rxORB).getUNOContext());
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// let it create a graphic from the given URL
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Sequence< PropertyValue > aMediaProperties( 1 );
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aMediaProperties[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "URL" ) );
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aMediaProperties[0].Value <<= _rImageResourceURL;
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Reference< XGraphic > xGraphic( xProvider->queryGraphic( aMediaProperties ) );
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OSL_ENSURE( xGraphic.is(), "GraphicAccess::getImageStream: the provider did not give us a graphic object!" );
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if ( !xGraphic.is() )
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return pReturn;
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// copy the graphic to a in-memory buffer
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SvMemoryStream* pMemBuffer = new SvMemoryStream;
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Reference< XStream > xBufferAccess = new StreamSupplier(
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new OSeekableInputStreamWrapper( *pMemBuffer ),
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new OSeekableOutputStreamWrapper( *pMemBuffer )
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);
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aMediaProperties.realloc( 2 );
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aMediaProperties[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "OutputStream" ) );
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aMediaProperties[0].Value <<= xBufferAccess;
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aMediaProperties[1].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "MimeType" ) );
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aMediaProperties[1].Value <<= ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "image/png" ) );
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xProvider->storeGraphic( xGraphic, aMediaProperties );
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pMemBuffer->Seek( 0 );
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pReturn = pMemBuffer;
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}
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catch( const Exception& )
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{
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OSL_FAIL( "GraphicAccess::getImageStream: caught an exception!" );
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}
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return pReturn;
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}
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//--------------------------------------------------------------------
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Reference< XInputStream > GraphicAccess::getImageXStream( const Reference< XMultiServiceFactory >& _rxORB, const ::rtl::OUString& _rImageResourceURL )
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{
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return new OSeekableInputStreamWrapper( getImageStream( _rxORB, _rImageResourceURL ), sal_True ); // take ownership
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}
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//........................................................................
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} // namespace svt
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//........................................................................
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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