src/windowmanager.cpp


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#include "windowmanager.h"

#include <QProcess>
#include <QTimer>
#include <QDebug>

namespace WindowManager {

static QProcess wm;

void ensureRunning()
{
    wm.start(QLatin1String("openbox"));
    wm.closeReadChannel(QProcess::StandardError);
    wm.closeReadChannel(QProcess::StandardOutput);
    wm.closeWriteChannel();
    wm.waitForStarted(1000);
    QTimer::singleShot(200, []() {
        if (wm.state() == QProcess::Running) {
            qDebug() << "- Spawned openbox";
        } else if (wm.exitCode() == 0) {
            qDebug() << "- A WM is already running";
        } else {
            qDebug() << "- openbox binary not in $PATH";
        }
    });
}

void stopOwnInstance()
{
    if (wm.state() == QProcess::Running) {
        qDebug() << "- Politely terminating spawned WM";
        wm.terminate();
        QTimer::singleShot(1000, []() {
            if (wm.state() == QProcess::Running) {
                qDebug() << "- Forcefully killing spawned WM";
                wm.kill();
            }
        });
    }
}

}