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/* This file is (c) 2008-2010 Konstantin Isakov <ikm@users.berlios.de>
* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
#include "externalviewer.hh"
#include <QDir>
using std::vector;
ExternalViewer::ExternalViewer( QObject * parent, vector< char > const & data,
QString const & extension,
QString const & viewerProgram_ )
throw( exCantCreateTempFile ):
QObject( parent ),
tempFile( QDir::temp().filePath( QString( "gd-XXXXXXXX." ) + extension ) ),
viewer( this ),
viewerProgram( viewerProgram_ )
{
if ( !tempFile.open() || tempFile.write( &data.front(), data.size() ) != data.size() )
throw exCantCreateTempFile();
tempFileName = tempFile.fileName(); // For some reason it loses it after it was closed()
tempFile.close();
printf( "%s\n", tempFile.fileName().toLocal8Bit().data() );
connect( &viewer, SIGNAL( finished( int, QProcess::ExitStatus ) ),
this, SLOT( viewerFinished( int, QProcess::ExitStatus ) ) );
connect( this, SIGNAL( finished( ExternalViewer * ) ),
&ExternalViewerDeleter::instance(), SLOT( deleteExternalViewer( ExternalViewer * ) ),
Qt::QueuedConnection );
}
ExternalViewer::~ExternalViewer()
{
// No need to delete us once we're being destructed. This fixes some
// double-free corruption if the object is being freed prematurely.
disconnect( this, SIGNAL( finished( ExternalViewer * ) ),
&ExternalViewerDeleter::instance(), SLOT( deleteExternalViewer( ExternalViewer * ) ) );
}
void ExternalViewer::start() throw( exCantRunViewer )
{
viewer.start( viewerProgram, QStringList( tempFileName ), QIODevice::NotOpen );
if ( !viewer.waitForStarted() )
throw exCantRunViewer( viewerProgram.toStdString() );
}
void ExternalViewer::viewerFinished( int, QProcess::ExitStatus )
{
emit finished( this );
}
ExternalViewerDeleter & ExternalViewerDeleter::instance()
{
static ExternalViewerDeleter evd( 0 );
return evd;
}
void ExternalViewerDeleter::deleteExternalViewer( ExternalViewer * e )
{
printf( "Deleting external viewer\n" );
delete e;
}
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