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QtGnuplotInstance.cpp
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141 lines (120 loc) · 4.54 KB
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/* GNUPLOT - QtGnuplotInstance.h */
/*[
* 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 "QtGnuplotInstance.h"
#include "QtGnuplotWidget.h"
#include <QtCore>
#include <iostream>
QtGnuplotInstance::QtGnuplotInstance(QtGnuplotWidget* widget, QString gnuplotPath)
{
QStringList gnuplotArgs;
gnuplotArgs << "--slow"; // paranoia about font initialization
m_gnuplot.setProcessChannelMode(QProcess::MergedChannels);
m_gnuplot.start(gnuplotPath, gnuplotArgs);
m_gnuplot.waitForStarted();
connect(&m_gnuplot, SIGNAL(readyReadStandardOutput()), this, SLOT(gnuplotDataReady()));
if (m_gnuplot.state() == QProcess::NotRunning)
qDebug() << "Error starting gnuplot" << m_gnuplot.error();
setWidget(widget);
}
QtGnuplotInstance::~QtGnuplotInstance()
{
m_gnuplot.close();
}
void QtGnuplotInstance::setWidget(QtGnuplotWidget* widget)
{
m_widget = widget;
if (m_widget)
{
QString command = "set term qt widget \"" + m_widget->serverName() + "\" size " +
QString::number(m_widget->plotAreaSize().width()) + "," +
QString::number(m_widget->plotAreaSize().height()) + "\n";
exec(command.toUtf8());
}
}
QtGnuplotWidget* QtGnuplotInstance::widget()
{
return m_widget;
}
void QtGnuplotInstance::gnuplotDataReady()
{
QByteArray result = m_gnuplot.readAllStandardOutput();
emit(gnuplotOutput(result.constData()));
}
void QtGnuplotInstance::exec(const QByteArray& command)
{
if (m_gnuplot.state() == QProcess::Running)
m_gnuplot.write(command);
else
qDebug() << "Not running";
}
QByteArray QtGnuplotInstance::execAndRead(const QByteArray& command, int msecs)
{
m_gnuplot.waitForReadyRead(0);
QByteArray trailing;
do
{
trailing = m_gnuplot.readAllStandardOutput();
emit(gnuplotOutput(trailing.constData()));
} while (!trailing.isEmpty());
m_gnuplot.disconnect(SIGNAL(readyReadStandardOutput()));
exec(command);
m_gnuplot.waitForReadyRead(msecs);
QByteArray answer = m_gnuplot.readAllStandardOutput();
connect(&m_gnuplot, SIGNAL(readyReadStandardOutput()), this, SLOT(gnuplotDataReady()));
return answer;
}
QtGnuplotInstance& operator<<(QtGnuplotInstance& instance, const QString& command)
{
QByteArray array;
array.append(command.toUtf8());
instance.exec(array);
return instance;
}
QtGnuplotInstance& operator<<(QtGnuplotInstance& instance, const QVector<QPointF>& points)
{
QByteArray array;
foreach (QPointF point, points)
array += QByteArray::number(point.x()) + " " + QByteArray::number(point.y()) + "\n";
array += "e\n";
instance.exec(array);
return instance;
}