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51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/* This file is (c) 2008-2012 Konstantin Isakov <ikm@goldendict.org>
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* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
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#ifndef __EXTERNALVIEWER_HH_INCLUDED__
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#define __EXTERNALVIEWER_HH_INCLUDED__
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#include <QObject>
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#include <QTemporaryFile>
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#include <QProcess>
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#include "ex.hh"
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/// An external viewer, opens resources in other programs
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class ExternalViewer: public QObject
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{
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Q_OBJECT
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QTemporaryFile tempFile;
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QProcess viewer;
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QString viewerCmdLine;
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QString tempFileName;
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public:
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DEF_EX( Ex, "External viewer exception", std::exception )
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DEF_EX( exCantCreateTempFile, "Couldn't create temporary file.", Ex )
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DEF_EX_STR( exCantRunViewer, "Couldn't run external viewer:", Ex )
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ExternalViewer( const char * data, int size,
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QString const & extension, QString const & viewerCmdLine,
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QObject * parent = 0 )
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;
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// Once this is called, the object will be deleted when it's done, even if
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// the function throws.
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void start() ;
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/// If the external process is running, requests its termination and returns
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/// false - expect the QObject::destroyed() signal to be emitted soon.
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/// If the external process is not running, returns true, the object
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/// destruction is not necessarily scheduled in this case.
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bool stop();
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/// Kills the process if it is running and waits for it to finish.
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void stopSynchronously();
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};
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/// Call this function instead of simply deleting viewer to prevent the
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/// "QProcess: Destroyed while process X is still running." warning in log.
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void stopAndDestroySynchronously( ExternalViewer * viewer );
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#endif
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