//=========================================== // Lumina-desktop source code // Copyright (c) 2017, Ken Moore // Available under the 3-clause BSD license // See the LICENSE file for full details //=========================================== // This is a simple class for launching/managing an external process in a non-interactive manner // This object will clean itself up when finished and log all output to a particular file if designated // otherwise it will suppress all output from the process //=========================================== #ifndef _LUMINA_EXTERNAL_PROCESS_H #define _LUMINA_EXTERNAL_PROCESS_H #include #include #include #include #include class ExternalProcess : public QProcess{ Q_OBJECT private: bool cursorRestored; private slots: void resetCursor(){ //qDebug() << "External Process: Reset Mouse Cursor =" << !cursorRestored; if(!cursorRestored){ QApplication::restoreOverrideCursor(); cursorRestored = true; } } void processStarting(){ //qDebug() << "Starting External Process: Mouse Notification =" << !cursorRestored; if(!cursorRestored){ QApplication::setOverrideCursor( QCursor(Qt::BusyCursor) ); QTimer::singleShot(3000, this, SLOT(resetCursor()) ); } } void processFinished(){ //qDebug() << "External Process Finished: Reset Mouse Cursor =" << !cursorRestored; if(!cursorRestored){ QApplication::restoreOverrideCursor(); cursorRestored = true; } //Clean up this object this->deleteLater(); } public: ExternalProcess(QString logfile = "", bool manageCursors = false) : QProcess(){ this->setProcessChannelMode(QProcess::MergedChannels); cursorRestored = !manageCursors; if(logfile.isEmpty()){ this->setStandardOutputFile(QProcess::nullDevice()); }else{ this->setStandardOutputFile(logfile); } //Setup the connection for automatic cleanup connect(this, SIGNAL(started()), this, SLOT(processStarting()) ); connect(this, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(processFinished()) ); } ~ExternalProcess(){ /*if(this->state() == QProcess::Running){ this->detach(); //about to close down the QProcess - detach the other program so it can continue functioning normally. }*/ } static void launch(QString program, QStringList args = QStringList(), bool manageCursors = true){ //Quick launch of a process with logging disabled and automatic cleanup ExternalProcess *tmp = new ExternalProcess("", manageCursors); if(args.isEmpty()){ tmp->start(program); } else{ tmp->start(program, args); } } }; #endif