qt-everywhere-src-5.15.1/qtsvg/examples/svg/embedded/fluidlauncher/demoapplication.cpp

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#include <QDebug>
#include <QDir>

#include "demoapplication.h"



DemoApplication::DemoApplication(QString executableName, QString caption, QString imageName, QStringList args)
{
    imagePath = imageName;
    appCaption = caption;

    if (executableName[0] == QLatin1Char('/'))
        executablePath = executableName;
    else
        executablePath = QDir::cleanPath(QDir::currentPath() + QLatin1Char('/') + executableName);
  
#ifdef WIN32
    if (!executablePath.endsWith(QLatin1String(".exe")))
        executablePath.append(QLatin1String(".exe"));
#endif

    arguments = args;

    process.setProcessChannelMode(QProcess::ForwardedChannels);

    QObject::connect( &process, SIGNAL(finished(int,QProcess::ExitStatus)), 
                      this, SLOT(processFinished(int,QProcess::ExitStatus)));

    QObject::connect( &process, SIGNAL(error(QProcess::ProcessError)), 
                      this, SLOT(processError(QProcess::ProcessError)));

    QObject::connect( &process, SIGNAL(started()), this, SLOT(processStarted()));
}


void DemoApplication::launch()
{
    process.start(executablePath, arguments);
}

QImage DemoApplication::getImage() const
{
    if (imagePath.isEmpty())
        return QImage();

    // in local dir?
    QImage result(imagePath);
    if (!result.isNull())
        return result;

    // provided by qrc
    result = QImage(QString(":/fluidlauncher/%1").arg(imagePath));
    return result;
}

QString DemoApplication::getCaption()
{
    return appCaption;
}

void DemoApplication::processFinished(int exitCode, QProcess::ExitStatus exitStatus)
{
    Q_UNUSED(exitCode);
    Q_UNUSED(exitStatus);

    emit demoFinished();

    QObject::disconnect(this, SIGNAL(demoStarted()), 0, 0);
    QObject::disconnect(this, SIGNAL(demoFinished()), 0, 0);
}

void DemoApplication::processError(QProcess::ProcessError err)
{
    qDebug() << "Process error: " << err;
    if (err == QProcess::Crashed)
        emit demoFinished();
}


void DemoApplication::processStarted()
{
    emit demoStarted();
}