mon_widget.cpp

#include <QtPlugin>

#include <QtGui>
#include <QProcess>
#include <QLineEdit>

#include <mon_widget.hpp>

QtCAmon::QtCAmon(QWidget* parent) : QWidget(parent) {
    pv_val = new QLabel("PV value",this);
    updateButton = new QPushButton("Start monitor",this);
    pv_name = new QLineEdit("PV name",this);
    proc = new QProcess(this);

    connect(updateButton,SIGNAL(clicked()),
	    this,SLOT(updateClicked()) );
    connect(proc,SIGNAL(readyReadStandardOutput()),
	    this,SLOT(readFromStdout()) );

    layout1 = new QHBoxLayout;
    layout1->addWidget(pv_name);
    layout1->addWidget(pv_val);
    layout1->addWidget(updateButton);

    setLayout(layout1);
}

QtCAmon::~QtCAmon() {
    delete pv_val;
    delete updateButton;
    delete pv_name;
    delete proc;

    delete layout1;
}

void QtCAmon::updateClicked() {
    QString pv = pv_name->text();
    QStringList args;
    args << "-f 4" << pv;

    program = "camonitor";

    if(proc->state()) {
	proc->terminate();
	updateButton->setText("Start monitor");
    }
    else {
	proc->start(program,args);
	updateButton->setText("Stop monitor");
    }

}

void QtCAmon::readFromStdout() {
    QByteArray output;
    output = proc->readAllStandardOutput();

    QTextStream test(output);
    QString name;
    QString day;
    QString time;
    double value;
    QString status;
    QString severity;

    test >> name;
    test >> day;
    test >> time;
    test >> value;
    test >> status;
    test >> severity;

    QString out(QString::number(value,'g',6));

    if(QString::compare(severity,"MINOR",Qt::CaseInsensitive) == 0) {
	out = out.prepend("<font color=yellow>");
	out = out.append("</font>");
    }

    else if (QString::compare(severity,"MAJOR",Qt::CaseInsensitive) == 0) {
	out = out.prepend("<font color=red>");
	out = out.append("</font>");
    }

    pv_val->setText(out);
}