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70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/* This file is (c) 2008-2009 Konstantin Isakov <ikm@users.berlios.de>
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* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
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#include "externalviewer.hh"
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#include <QDir>
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using std::vector;
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ExternalViewer::ExternalViewer( QObject * parent, vector< char > const & data,
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QString const & extension,
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QString const & viewerProgram_ )
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throw( exCantCreateTempFile ):
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QObject( parent ),
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tempFile( QDir::temp().filePath( QString( "gd-XXXXXXXX." ) + extension ) ),
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viewer( this ),
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viewerProgram( viewerProgram_ )
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{
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if ( !tempFile.open() || tempFile.write( &data.front(), data.size() ) != data.size() )
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throw exCantCreateTempFile();
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tempFileName = tempFile.fileName(); // For some reason it loses it after it was closed()
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tempFile.close();
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printf( "%s\n", tempFile.fileName().toLocal8Bit().data() );
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connect( &viewer, SIGNAL( finished( int, QProcess::ExitStatus ) ),
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this, SLOT( viewerFinished( int, QProcess::ExitStatus ) ) );
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connect( this, SIGNAL( finished( ExternalViewer * ) ),
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&ExternalViewerDeleter::instance(), SLOT( deleteExternalViewer( ExternalViewer * ) ),
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Qt::QueuedConnection );
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}
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ExternalViewer::~ExternalViewer()
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{
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// No need to delete us once we're being destructed. This fixes some
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// double-free corruption if the object is being freed prematurely.
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disconnect( this, SIGNAL( finished( ExternalViewer * ) ),
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&ExternalViewerDeleter::instance(), SLOT( deleteExternalViewer( ExternalViewer * ) ) );
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}
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void ExternalViewer::start() throw( exCantRunViewer )
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{
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viewer.start( viewerProgram, QStringList( tempFileName ), QIODevice::NotOpen );
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if ( !viewer.waitForStarted() )
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throw exCantRunViewer( viewerProgram.toStdString() );
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}
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void ExternalViewer::viewerFinished( int, QProcess::ExitStatus )
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{
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emit finished( this );
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}
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ExternalViewerDeleter & ExternalViewerDeleter::instance()
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{
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static ExternalViewerDeleter evd( 0 );
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return evd;
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}
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void ExternalViewerDeleter::deleteExternalViewer( ExternalViewer * e )
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{
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printf( "Deleting external viewer\n" );
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delete e;
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}
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