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b6bd94d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | /* This file is (c) 2008-2012 Konstantin Isakov <ikm@goldendict.org>
* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
#pragma once
#include <QObject>
#include <QTemporaryFile>
#include <QProcess>
#include "ex.hh"
/// An external viewer, opens resources in other programs
class ExternalViewer: public QObject
{
Q_OBJECT
QTemporaryFile tempFile;
QProcess viewer;
QString viewerCmdLine;
QString tempFileName;
public:
DEF_EX( Ex, "External viewer exception", std::exception )
DEF_EX( exCantCreateTempFile, "Couldn't create temporary file.", Ex )
DEF_EX_STR( exCantRunViewer, "Couldn't run external viewer:", Ex )
ExternalViewer(
const char * data, int size, const QString & extension, const QString & viewerCmdLine, QObject * parent = 0 );
// Once this is called, the object will be deleted when it's done, even if
// the function throws.
void start();
/// If the external process is running, requests its termination and returns
/// false - expect the QObject::destroyed() signal to be emitted soon.
/// If the external process is not running, returns true, the object
/// destruction is not necessarily scheduled in this case.
bool stop();
/// Kills the process if it is running and waits for it to finish.
void stopSynchronously();
};
/// Call this function instead of simply deleting viewer to prevent the
/// "QProcess: Destroyed while process X is still running." warning in log.
void stopAndDestroySynchronously( ExternalViewer * viewer );
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