embeddedobj/source/msole/graphconvert.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <com/sun/star/uno/Any.hxx>
  21 #include <com/sun/star/uno/Reference.hxx>
  22 #include <com/sun/star/uno/Sequence.hxx>
  23 #include <com/sun/star/embed/Aspects.hpp>
  24 #include <com/sun/star/io/XInputStream.hpp>
  25 #include <com/sun/star/io/XOutputStream.hpp>
  26 #include <com/sun/star/graphic/GraphicProvider.hpp>
  27 #include <com/sun/star/graphic/XGraphicProvider.hpp>
  28 #include <com/sun/star/graphic/XGraphic.hpp>
  29 #include <com/sun/star/beans/PropertyValue.hpp>
  30 #include <osl/mutex.hxx>
  31 #include <unotools/streamwrap.hxx>
  32 #include <comphelper/processfactory.hxx>
  33 #include <comphelper/seqstream.hxx>
  34 #include <tools/stream.hxx>
  35 #include <vcl/graphicfilter.hxx>
  36
  37 #include <graphconvert.hxx>
  38 #include "mtnotification.hxx"
  39 #include "oleembobj.hxx"
  40
  41
  42 using namespace ::com::sun::star;
  43
  44
  45 bool ConvertBufferToFormat( void* pBuf,
  46                                 sal_uInt32 nBufSize,
  47                                 const OUString& aMimeType,
  48                                 uno::Any& aResult )
  49 {
  50     // produces sequence with data in requested format and returns it in aResult
  51     if ( pBuf )
  52     {
  53         // First, in case the buffer is already in the requested format, then avoid a conversion.
  54         SvMemoryStream aMemoryStream(pBuf, nBufSize, StreamMode::READ);
  55         GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
  56         sal_uInt16 nRetFormat = 0;
  57         if (rFilter.CanImportGraphic(OUString(), aMemoryStream, GRFILTER_FORMAT_DONTKNOW, &nRetFormat) == GRFILTER_OK &&
  58                 rFilter.GetImportFormatMediaType(nRetFormat) == aMimeType)
  59         {
  60             aResult <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemoryStream.GetData() ), aMemoryStream.Seek( STREAM_SEEK_TO_END ) );
  61             return true;
  62         }
  63
  64         uno::Sequence < sal_Int8 > aData( static_cast<sal_Int8*>(pBuf), nBufSize );
  65         uno::Reference < io::XInputStream > xIn = new comphelper::SequenceInputStream( aData );
  66         try
  67         {
  68             uno::Reference < graphic::XGraphicProvider > xGraphicProvider( graphic::GraphicProvider::create(comphelper::getProcessComponentContext()));
  69             uno::Sequence< beans::PropertyValue > aMediaProperties( 1 );
  70             aMediaProperties[0].Name = "InputStream";
  71             aMediaProperties[0].Value <<= xIn;
  72             uno::Reference< graphic::XGraphic > xGraphic( xGraphicProvider->queryGraphic( aMediaProperties  ) );
  73             if( xGraphic.is() )
  74             {
  75                 SvMemoryStream aNewStream( 65535, 65535 );
  76                 uno::Reference < io::XStream > xOut = new utl::OStreamWrapper( aNewStream );
  77                 uno::Sequence< beans::PropertyValue > aOutMediaProperties( 2 );
  78                 aOutMediaProperties[0].Name = "OutputStream";
  79                 aOutMediaProperties[0].Value <<= xOut;
  80                 aOutMediaProperties[1].Name = "MimeType";
  81                 aOutMediaProperties[1].Value <<= aMimeType;
  82
  83                 xGraphicProvider->storeGraphic( xGraphic, aOutMediaProperties );
  84                 aResult <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aNewStream.GetData() ), aNewStream.Seek( STREAM_SEEK_TO_END ) );
  85                 return true;
  86             }
  87         }
  88         catch (const uno::Exception&)
  89         {}
  90     }
  91
  92     return false;
  93 }
  94
  95
  96 // MainThreadNotificationRequest
  97
  98 MainThreadNotificationRequest::MainThreadNotificationRequest( const ::rtl::Reference< OleEmbeddedObject >& xObj, sal_uInt16 nNotificationType, sal_uInt32 nAspect )
  99 : m_pObject( xObj.get() )
 100 , m_xObject( static_cast< embed::XEmbeddedObject* >( xObj.get() ) )
 101 , m_nNotificationType( nNotificationType )
 102 , m_nAspect( nAspect )
 103 {}
 104
 105 void SAL_CALL MainThreadNotificationRequest::notify (const uno::Any& ) throw (uno::RuntimeException)
 106 {
 107     if ( m_pObject )
 108     {
 109         try
 110         {
 111             uno::Reference< uno::XInterface > xLock = m_xObject.get();
 112             if ( xLock.is() )
 113             {
 114                 // this is the main thread, the solar mutex must be locked
 115                 if ( m_nNotificationType == OLECOMP_ONCLOSE )
 116                     m_pObject->OnClosed_Impl();
 117                 else if ( m_nAspect == embed::Aspects::MSOLE_CONTENT )
 118                     m_pObject->OnViewChanged_Impl();
 119                 else if ( m_nAspect == embed::Aspects::MSOLE_ICON )
 120                     OleEmbeddedObject::OnIconChanged_Impl();
 121             }
 122         }
 123         catch( const uno::Exception& )
 124         {
 125             // ignore all the errors
 126         }
 127     }
 128 }
 129
 130 MainThreadNotificationRequest::~MainThreadNotificationRequest()
 131 {
 132 }
 133
 134 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */