filter/source/svg/svgfilter.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
  21 #include <cstdio>
  22
  23 #include <comphelper/servicedecl.hxx>
  24 #include <uno/environment.h>
  25 #include <com/sun/star/drawing/XDrawPage.hpp>
  26 #include <com/sun/star/drawing/XDrawView.hpp>
  27 #include <com/sun/star/frame/Desktop.hpp>
  28 #include <com/sun/star/frame/XController.hpp>
  29 #include <com/sun/star/view/XSelectionSupplier.hpp>
  30 #include <com/sun/star/drawing/XDrawSubController.hpp>
  31 #include <com/sun/star/container/XNamed.hpp>
  32 #include <com/sun/star/uno/XComponentContext.hpp>
  33 #include <com/sun/star/drawing/framework/XControllerManager.hpp>
  34 #include <com/sun/star/drawing/framework/XConfigurationController.hpp>
  35 #include <com/sun/star/drawing/framework/XConfiguration.hpp>
  36 #include <com/sun/star/drawing/framework/AnchorBindingMode.hpp>
  37 #include <com/sun/star/drawing/framework/XResourceId.hpp>
  38 #include <com/sun/star/drawing/framework/XResource.hpp>
  39 #include <com/sun/star/drawing/framework/XView.hpp>
  40 #include <com/sun/star/drawing/framework/ResourceId.hpp>
  41 #include <comphelper/processfactory.hxx>
  42
  43 #include <osl/mutex.hxx>
  44
  45 #include "svgfilter.hxx"
  46 #include "svgwriter.hxx"
  47
  48 using namespace ::com::sun::star;
  49
  50 // -------------
  51 // - SVGFilter -
  52 // -------------
  53
  54 SVGFilter::SVGFilter( const Reference< XComponentContext >& rxCtx ) :
  55     mxContext( rxCtx ),
  56     mpSVGDoc( NULL ),
  57     mpSVGExport( NULL ),
  58     mpSVGFontExport( NULL ),
  59     mpSVGWriter( NULL ),
  60     mpDefaultSdrPage( NULL ),
  61     mpSdrModel( NULL ),
  62     mbPresentation( sal_False ),
  63     mbExportAll( sal_False ),
  64     mpObjects( NULL )
  65
  66 {
  67 }
  68
  69 // -----------------------------------------------------------------------------
  70
  71 SVGFilter::~SVGFilter()
  72 {
  73     DBG_ASSERT( mpSVGDoc == NULL, "mpSVGDoc not destroyed" );
  74     DBG_ASSERT( mpSVGExport == NULL, "mpSVGExport not destroyed" );
  75     DBG_ASSERT( mpSVGFontExport == NULL, "mpSVGFontExport not destroyed" );
  76     DBG_ASSERT( mpSVGWriter == NULL, "mpSVGWriter not destroyed" );
  77     DBG_ASSERT( mpObjects == NULL, "mpObjects not destroyed" );
  78 }
  79
  80 // -----------------------------------------------------------------------------
  81
  82 sal_Bool SAL_CALL SVGFilter::filter( const Sequence< PropertyValue >& rDescriptor )
  83     throw (RuntimeException)
  84 {
  85     SolarMutexGuard aGuard;
  86     Window*     pFocusWindow = Application::GetFocusWindow();
  87     sal_Bool    bRet;
  88
  89     if( pFocusWindow )
  90         pFocusWindow->EnterWait();
  91
  92     if( mxDstDoc.is() )
  93         bRet = implImport( rDescriptor );
  94 #ifndef DISABLE_EXPORT
  95     else if( mxSrcDoc.is() )
  96     {
  97         if( !mbExportAll && !mSelectedPages.hasElements() )
  98         {
  99             uno::Reference< frame::XDesktop2 >                           xDesktop(frame::Desktop::create(mxContext));
 100             uno::Reference< frame::XFrame >                              xFrame(xDesktop->getCurrentFrame(),
 101                                                                                 uno::UNO_QUERY_THROW);
 102             uno::Reference<frame::XController >                          xController(xFrame->getController(),
 103                                                                                      uno::UNO_QUERY_THROW);
 104             uno::Reference<drawing::XDrawView >                          xDrawView(xController,
 105                                                                                    uno::UNO_QUERY_THROW);
 106             uno::Reference<drawing::framework::XControllerManager>       xManager(xController,
 107                                                                                   uno::UNO_QUERY_THROW);
 108             uno::Reference<drawing::framework::XConfigurationController> xConfigController(xManager->getConfigurationController());
 109
 110             // which view configuration are we in?
 111             //
 112             // * traverse Impress resources to find slide preview pane, grab selection from there
 113             // * otherwise, fallback to current slide
 114             //
 115             uno::Sequence<uno::Reference<drawing::framework::XResourceId> > aResIds(
 116                 xConfigController->getCurrentConfiguration()->getResources(
 117                     uno::Reference<drawing::framework::XResourceId>(),
 118                     "",
 119                     drawing::framework::AnchorBindingMode_INDIRECT));
 120
 121             for( sal_Int32 i=0; i<aResIds.getLength(); ++i )
 122             {
 123                 // can we somehow obtain the slidesorter from the Impress framework?
 124                 if( aResIds[i]->getResourceURL() == "private:resource/view/SlideSorter" )
 125                 {
 126                     // got it, grab current selection from there
 127                     uno::Reference<drawing::framework::XResource> xRes(
 128                         xConfigController->getResource(aResIds[i]));
 129
 130                     uno::Reference< view::XSelectionSupplier > xSelectionSupplier(
 131                         xRes,
 132                         uno::UNO_QUERY );
 133                     if( xSelectionSupplier.is() )
 134                     {
 135                         uno::Any aSelection = xSelectionSupplier->getSelection();
 136                         if( aSelection.hasValue() )
 137                         {
 138                             ObjectSequence aSelectedPageSequence;
 139                             aSelection >>= aSelectedPageSequence;
 140                             mSelectedPages.realloc( aSelectedPageSequence.getLength() );
 141                             for( sal_Int32 j=0; j<mSelectedPages.getLength(); ++j )
 142                             {
 143                                 uno::Reference< drawing::XDrawPage > xDrawPage( aSelectedPageSequence[j],
 144                                                                                 uno::UNO_QUERY );
 145                                 mSelectedPages[j] = xDrawPage;
 146                             }
 147
 148                             // and stop looping. it is likely not getting better
 149                             break;
 150                         }
 151                     }
 152                 }
 153             }
 154
 155             if( !mSelectedPages.hasElements() )
 156             {
 157                 // apparently failed to glean selection - fallback to current page
 158                 mSelectedPages.realloc( 1 );
 159                 mSelectedPages[0] = xDrawView->getCurrentPage();
 160             }
 161         }
 162
 163         /*
 164          * Export all slides, or requested "PagePos"
 165          */
 166         if( !mSelectedPages.hasElements() )
 167         {
 168             sal_Int32            nLength = rDescriptor.getLength();
 169             const PropertyValue* pValue = rDescriptor.getConstArray();
 170             sal_Int32            nPageToExport = -1;
 171
 172             for ( sal_Int32 i = 0 ; i < nLength; ++i)
 173             {
 174                 if ( pValue[ i ].Name == "PagePos" )
 175                 {
 176                     pValue[ i ].Value >>= nPageToExport;
 177                 }
 178             }
 179
 180             uno::Reference< drawing::XMasterPagesSupplier > xMasterPagesSupplier( mxSrcDoc, uno::UNO_QUERY );
 181             uno::Reference< drawing::XDrawPagesSupplier >   xDrawPagesSupplier( mxSrcDoc, uno::UNO_QUERY );
 182
 183             if( xMasterPagesSupplier.is() && xDrawPagesSupplier.is() )
 184             {
 185                 uno::Reference< drawing::XDrawPages >   xMasterPages( xMasterPagesSupplier->getMasterPages(), uno::UNO_QUERY );
 186                 uno::Reference< drawing::XDrawPages >   xDrawPages( xDrawPagesSupplier->getDrawPages(), uno::UNO_QUERY );
 187                 if( xMasterPages.is() && xMasterPages->getCount() &&
 188                     xDrawPages.is() && xDrawPages->getCount() )
 189                 {
 190                     sal_Int32 nDPCount = xDrawPages->getCount();
 191
 192                     mSelectedPages.realloc( nPageToExport != -1 ? 1 : nDPCount );
 193                     sal_Int32 i;
 194                     for( i = 0; i < nDPCount; ++i )
 195                     {
 196                         if( nPageToExport != -1 && nPageToExport == i )
 197                         {
 198                             uno::Reference< drawing::XDrawPage > xDrawPage( xDrawPages->getByIndex( i ), uno::UNO_QUERY );
 199                             mSelectedPages[0] = xDrawPage;
 200                         }
 201                         else
 202                         {
 203                             uno::Reference< drawing::XDrawPage > xDrawPage( xDrawPages->getByIndex( i ), uno::UNO_QUERY );
 204                             mSelectedPages[i] = xDrawPage;
 205                         }
 206                     }
 207                 }
 208             }
 209         }
 210
 211         /*
 212          *  We get all master page that are targeted by at least one draw page.
 213          *  The master page are put in an unordered set.
 214          */
 215         ObjectSet aMasterPageTargetSet;
 216         for( sal_Int32 i = 0; i < mSelectedPages.getLength(); ++i )
 217         {
 218             uno::Reference< drawing::XMasterPageTarget > xMasterPageTarget( mSelectedPages[i], uno::UNO_QUERY );
 219             if( xMasterPageTarget.is() )
 220             {
 221                 aMasterPageTargetSet.insert( xMasterPageTarget->getMasterPage() );
 222             }
 223         }
 224         // Later we move them to a uno::Sequence so we can get them by index
 225         mMasterPageTargets.realloc( aMasterPageTargetSet.size() );
 226         ObjectSet::const_iterator aElem = aMasterPageTargetSet.begin();
 227         for( sal_Int32 i = 0; aElem != aMasterPageTargetSet.end(); ++aElem, ++i)
 228         {
 229             uno::Reference< drawing::XDrawPage > xMasterPage( *aElem,  uno::UNO_QUERY );
 230             mMasterPageTargets[i] = xMasterPage;
 231         }
 232
 233         bRet = implExport( rDescriptor );
 234     }
 235 #endif
 236     else
 237         bRet = sal_False;
 238
 239     if( pFocusWindow )
 240         pFocusWindow->LeaveWait();
 241
 242     return bRet;
 243 }
 244
 245 // -----------------------------------------------------------------------------
 246
 247 void SAL_CALL SVGFilter::cancel( ) throw (RuntimeException)
 248 {
 249 }
 250
 251 // -----------------------------------------------------------------------------
 252
 253 void SAL_CALL SVGFilter::setSourceDocument( const Reference< XComponent >& xDoc )
 254     throw (IllegalArgumentException, RuntimeException)
 255 {
 256     mxSrcDoc = xDoc;
 257 }
 258
 259 // -----------------------------------------------------------------------------
 260
 261 void SAL_CALL SVGFilter::setTargetDocument( const Reference< XComponent >& xDoc )
 262     throw (::com::sun::star::lang::IllegalArgumentException, RuntimeException)
 263 {
 264     mxDstDoc = xDoc;
 265 }
 266
 267 // -----------------------------------------------------------------------------
 268
 269 OUString SAL_CALL SVGFilter::detect( Sequence< PropertyValue >& io_rDescriptor ) throw (RuntimeException)
 270 {
 271     uno::Reference< io::XInputStream > xInput;
 272
 273     const beans::PropertyValue* pAttribs = io_rDescriptor.getConstArray();
 274     const sal_Int32 nAttribs = io_rDescriptor.getLength();
 275     for( sal_Int32 i = 0; i < nAttribs; i++ )
 276     {
 277         if ( pAttribs[i].Name == "InputStream" )
 278             pAttribs[i].Value >>= xInput;
 279     }
 280
 281     if( !xInput.is() )
 282         return OUString();
 283
 284     uno::Reference< io::XSeekable > xSeek( xInput, uno::UNO_QUERY );
 285     if( xSeek.is() )
 286         xSeek->seek( 0 );
 287
 288     // read the first 1024 bytes & check a few magic string
 289     // constants (heuristically)
 290     const sal_Int32 nLookAhead = 1024;
 291     uno::Sequence< sal_Int8 > aBuf( nLookAhead );
 292     const sal_uInt64 nBytes=xInput->readBytes(aBuf, nLookAhead);
 293     const sal_Int8* const pBuf=aBuf.getConstArray();
 294
 295     sal_Int8 aMagic1[] = {'<', 's', 'v', 'g'};
 296     if( std::search(pBuf, pBuf+nBytes,
 297                     aMagic1, aMagic1+sizeof(aMagic1)/sizeof(*aMagic1)) != pBuf+nBytes )
 298         return OUString("svg_Scalable_Vector_Graphics");
 299
 300     sal_Int8 aMagic2[] = {'D', 'O', 'C', 'T', 'Y', 'P', 'E', ' ', 's', 'v', 'g'};
 301     if( std::search(pBuf, pBuf+nBytes,
 302                     aMagic2, aMagic2+sizeof(aMagic2)/sizeof(*aMagic2)) != pBuf+nBytes )
 303         return OUString("svg_Scalable_Vector_Graphics");
 304
 305     return OUString();
 306 }
 307
 308 // -----------------------------------------------------------------------------
 309
 310 #define SVG_FILTER_IMPL_NAME "com.sun.star.comp.Draw.SVGFilter"
 311 #define SVG_WRITER_IMPL_NAME "com.sun.star.comp.Draw.SVGWriter"
 312
 313 namespace sdecl = comphelper::service_decl;
 314  sdecl::class_<SVGFilter> serviceFilterImpl;
 315  const sdecl::ServiceDecl svgFilter(
 316      serviceFilterImpl,
 317      SVG_FILTER_IMPL_NAME,
 318      "com.sun.star.document.ImportFilter;"
 319      "com.sun.star.document.ExportFilter;"
 320      "com.sun.star.document.ExtendedTypeDetection" );
 321
 322  sdecl::class_<SVGWriter> serviceWriterImpl;
 323  const sdecl::ServiceDecl svgWriter(
 324      serviceWriterImpl,
 325      SVG_WRITER_IMPL_NAME,
 326      "com.sun.star.svg.SVGWriter" );
 327
 328 // The C shared lib entry points
 329 extern "C" SAL_DLLPUBLIC_EXPORT void* SAL_CALL svgfilter_component_getFactory(
 330     sal_Char const* pImplName,
 331     ::com::sun::star::lang::XMultiServiceFactory* pServiceManager,
 332     ::com::sun::star::registry::XRegistryKey* pRegistryKey )
 333 {
 334     if ( rtl_str_compare (pImplName, SVG_FILTER_IMPL_NAME) == 0 )
 335     {
 336         return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey, svgFilter );
 337     }
 338     else if ( rtl_str_compare (pImplName, SVG_WRITER_IMPL_NAME) == 0 )
 339     {
 340         return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey, svgWriter );
 341     }
 342     return NULL;
 343 }
 344
 345 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */