filters

latexexport.cc

00001 /* This file is part of the KDE project
00002    Copyright (C) 2002 Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.de>
00003 
00004    This library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Library General Public
00006    License as published by the Free Software Foundation; either
00007    version 2 of the License, or (at your option) any later version.
00008 
00009    This library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Library General Public License for more details.
00013 
00014    You should have received a copy of the GNU Library General Public License
00015    along with this library; see the file COPYING.LIB.  If not, write to
00016    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017  * Boston, MA 02110-1301, USA.
00018 */
00019 
00020 #include <qstring.h>
00021 #include <qtextstream.h>
00022 #include <qfile.h>
00023 
00024 #include <kapplication.h>
00025 #include <kdebug.h>
00026 #include <kgenericfactory.h>
00027 #include <kmessagebox.h>
00028 
00029 #include <KoFilterChain.h>
00030 #include <KoStoreDevice.h>
00031 
00032 #include <kformuladocument.h>
00033 #include <kformulacontainer.h>
00034 #include <kformulamimesource.h>
00035 
00036 #include "latexexport.h"
00037 
00038 
00039 typedef KGenericFactory<LATEXExport, KoFilter> LATEXExportFactory;
00040 K_EXPORT_COMPONENT_FACTORY( libkfolatexexport, LATEXExportFactory( "kofficefilters" ) )
00041 
00042 
00043 LATEXExport::LATEXExport( KoFilter */*parent*/, const char */*name*/, const QStringList& )
00044     : KoFilter()
00045 {
00046 }
00047 
00048 
00049 KoFilter::ConversionStatus LATEXExport::convert( const QCString& from, const QCString& to )
00050 {
00051     if ( to != "text/x-tex" || from != "application/x-kformula" )
00052         return KoFilter::NotImplemented;
00053 
00054     KoStoreDevice* in = m_chain->storageFile( "root", KoStore::Read );
00055     if(!in) {
00056         QApplication::restoreOverrideCursor();
00057         KMessageBox::error( 0, i18n( "Failed to read data." ), i18n( "LaTeX Export Error" ) );
00058         return KoFilter::StorageCreationError;
00059     }
00060 
00061     QDomDocument dom( "KFORMULA" );
00062     if ( !dom.setContent( in, false ) ) {
00063         QApplication::restoreOverrideCursor();
00064         KMessageBox::error( 0, i18n( "Malformed XML data." ), i18n( "LaTeX Export Error" ) );
00065         return KoFilter::WrongFormat;
00066     }
00067 
00068     QFile f( m_chain->outputFile() );
00069     if( !f.open( IO_Truncate | IO_ReadWrite ) ) {
00070         QApplication::restoreOverrideCursor();
00071         KMessageBox::error( 0, i18n( "Failed to write file." ), i18n( "LaTeX Export Error" ) );
00072         return KoFilter::FileNotFound;
00073     }
00074 
00075     KFormula::DocumentWrapper* wrapper = new KFormula::DocumentWrapper( kapp->config(), 0 );
00076     KFormula::Document* doc = new KFormula::Document;
00077     wrapper->document( doc );
00078     KFormula::Container* formula = doc->createFormula();
00079     if ( !doc->loadXML( dom ) ) {
00080         kdError(30522) << "Failed." << endl;
00081     }
00082 
00083     QTextStream stream(&f);
00084     //stream.setEncoding(QTextStream::UnicodeUTF8);
00085     stream << "\\documentclass{article}\n\\usepackage{amsmath}\n\\begin{document}\n\\[\n"
00086            << formula->texString()
00087            << "\n\\]\n\\end{document}";
00088     f.close();
00089 
00090     delete formula;
00091     delete wrapper;
00092 
00093     return KoFilter::OK;
00094 }
00095 
00096 #include "latexexport.moc"
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