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QtGnuplotApplication.cpp
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132 lines (121 loc) · 4.68 KB
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/* GNUPLOT - QtGnuplotApplication.cpp */
/*[
* Copyright 2009 Jérôme Lodewyck
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
*
*
* Alternatively, the contents of this file may be used under the terms of the
* GNU General Public License Version 2 or later (the "GPL"), in which case the
* provisions of GPL are applicable instead of those above. If you wish to allow
* use of your version of this file only under the terms of the GPL and not
* to allow others to use your version of this file under the above gnuplot
* license, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the GPL. If you do not
* delete the provisions above, a recipient may use your version of this file
* under either the GPL or the gnuplot license.
]*/
#include "QtGnuplotApplication.h"
#include "QtGnuplotWindow.h"
#include "QtGnuplotEvent.h"
#include <QDebug>
QtGnuplotApplication::QtGnuplotApplication(int& argc, char** argv)
: QApplication(argc, argv)
{
setQuitOnLastWindowClosed(false);
setWindowIcon(QIcon(":/images/gnuplot"));
m_currentWindow = NULL;
m_lastId = 0;
m_eventHandler = new QtGnuplotEventHandler(this, "qtgnuplot" + QString::number(applicationPid()));
connect(m_eventHandler, SIGNAL(connected()), this, SLOT(exitPersistMode()));
connect(m_eventHandler, SIGNAL(disconnected()), this, SLOT(enterPersistMode()));
}
QtGnuplotApplication::~QtGnuplotApplication()
{
}
void QtGnuplotApplication::windowDestroyed(QObject* object)
{
// A window has been closed. Unregister it.
int id = m_windows.key((QtGnuplotWindow*)(object));
if (m_windows.take(id) == m_currentWindow)
m_currentWindow = 0;
}
void QtGnuplotApplication::enterPersistMode()
{
setQuitOnLastWindowClosed(true);
// But if the plot window was already closed, this is our last chance to exit
if (m_windows.isEmpty())
quit();
// Also exit if none of the surviving windows are visible
bool still_showing = false;
QMap<int, QtGnuplotWindow*>::iterator i;
for (i = m_windows.begin(); i != m_windows.end(); ++i) {
if ((*i)->isVisible())
still_showing = true;
}
if (!still_showing)
quit();
// Some programs executing gnuplot -persist may be waiting for all default
// handles to be closed before they consider the sub-process finished.
// Using freopen() ensures that debug fprintf()s won't crash.
freopen("/dev/null","w",stdout);
freopen("/dev/null","w",stderr);
}
void QtGnuplotApplication::exitPersistMode()
{
setQuitOnLastWindowClosed(false);
}
void QtGnuplotApplication::processEvent(QtGnuplotEventType type, QDataStream& in)
{
if (type == GESetCurrentWindow) // Select window
{
in >> m_lastId;
m_currentWindow = m_windows[m_lastId];
}
else if ((type == GEInitWindow) && (!m_currentWindow)) // Create the window if necessary
{
m_currentWindow = new QtGnuplotWindow(m_lastId, m_eventHandler);
connect(m_currentWindow, SIGNAL(destroyed(QObject*)), this, SLOT(windowDestroyed(QObject*)));
m_windows.insert(m_lastId, m_currentWindow);
}
else if (type == GECloseWindow)
{
int id;
in >> id;
QtGnuplotWindow* closeWindow = m_windows.take(id);
if (closeWindow)
closeWindow->close();
}
else if (type == GEExit)
quit();
else if (type == GEPersist)
enterPersistMode();
else if (m_currentWindow) // Dispatch gnuplot events to widgets
m_currentWindow->processEvent(type, in);
else
swallowEvent(type, in);
}