149 lines
4.9 KiB
C++
149 lines
4.9 KiB
C++
/****************************************************************************
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PFitOutputHandler.cpp
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Author: Andreas Suter
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e-mail: andreas.suter@psi.ch
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*****************************************************************************/
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/***************************************************************************
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* Copyright (C) 2009 by Andreas Suter *
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* andreas.suter@psi.ch *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <qtimer.h>
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#include "PFitOutputHandler.h"
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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PFitOutputHandler::PFitOutputHandler(QString workingDirectory, QValueVector<QString> &cmd)
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{
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if (cmd.empty())
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return;
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// Layout
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fVbox = new QVBox( this );
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fVbox->resize(800, 500);
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fOutput = new QTextEdit( fVbox );
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fOutput->setMinimumSize(800, 455);
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fOutput->setReadOnly(true);
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connect( fOutput, SIGNAL( destroyed() ), this, SLOT(quitButtonPressed() ) );
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fQuitButton = new QPushButton( tr("Fitting..."), fVbox );
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connect( fQuitButton, SIGNAL( clicked() ), this, SLOT( quitButtonPressed() ) );
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resize( 800, 500 );
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fQuitButton->setFocus();
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// QProcess related code
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fProc = new QProcess( this );
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fProc->setWorkingDirectory(workingDirectory);
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// Set up the command and arguments.
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for (unsigned int i=0; i<cmd.size(); i++)
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fProc->addArgument(cmd[i]);
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connect( fProc, SIGNAL( readyReadStdout() ), this, SLOT( readFromStdOut() ) );
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connect( fProc, SIGNAL( readyReadStderr() ), this, SLOT( readFromStdErr() ) );
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connect( fProc, SIGNAL( processExited() ), this, SLOT( processDone() ) );
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if ( !fProc->start() ) {
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// error handling
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QMessageBox::critical( 0,
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tr("Fatal error"),
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tr("Could not execute the output command: "+cmd[0]),
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tr("Quit") );
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done(0);
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}
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fProcPID = fProc->processIdentifier();
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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PFitOutputHandler::~PFitOutputHandler()
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{
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if (fProc->isRunning()) {
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fProc->tryTerminate();
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QTimer::singleShot( 3000, fProc, SLOT( kill() ) );
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}
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if (fProc->isRunning()) { // try low level kill
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char cmd[128];
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snprintf(cmd, sizeof(cmd), "kill -9 %ld", fProcPID);
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system(cmd);
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}
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if (fProc) {
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delete fProc;
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fProc = 0;
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}
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFitOutputHandler::readFromStdOut()
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{
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// Read and process the data.
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// Bear in mind that the data might be output in chunks.
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fOutput->append( fProc->readStdout() );
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFitOutputHandler::readFromStdErr()
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{
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// Read and process the data.
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// Bear in mind that the data might be output in chunks.
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fOutput->append( fProc->readStderr() );
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFitOutputHandler::processDone()
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{
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fQuitButton->setText("Done");
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFitOutputHandler::quitButtonPressed()
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{
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// if the fitting is still taking place, kill it
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if (fProc->isRunning()) {
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fProc->tryTerminate();
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QTimer::singleShot( 1000, fProc, SLOT( kill() ) );
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}
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accept();
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}
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//----------------------------------------------------------------------------------------------------
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// END
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//----------------------------------------------------------------------------------------------------
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