Method startInputMethod

src/inputmethod.cpp:852–905

}

void InputMethod::startInputMethod()
{
    stopInputMethod();
    if (m_inputMethodCommand.isEmpty() || kwinApp()->isTerminating()) {
        return;
    }

    QStringList arguments = KShell::splitArgs(m_inputMethodCommand);
    if (arguments.isEmpty()) {
        qWarning("Failed to launch the input method server: %s is an invalid command", qPrintable(m_inputMethodCommand));
        return;
    }

    const QString program = arguments.takeFirst();
    int socket = waylandServer()->createInputMethodConnection();
    if (socket < 0) {
        qWarning("Failed to create the input method connection");
        return;
    }
    socket = dup(socket);

    QProcessEnvironment environment = kwinApp()->processStartupEnvironment();
    environment.insert(QStringLiteral("WAYLAND_SOCKET"), QString::number(socket));
    environment.insert(QStringLiteral("QT_QPA_PLATFORM"), QStringLiteral("wayland"));
    // When we use Maliit as virtual keyboard, we want KWin to handle the animation
    // since that works a lot better. So we need to tell Maliit to not do client side
    // animation.
    environment.insert(QStringLiteral("MALIIT_ENABLE_ANIMATIONS"), QStringLiteral("0"));

    if (qEnvironmentVariableIntValue("KWIN_IM_WAYLAND_DEBUG") == 1) {
        environment.insert("WAYLAND_DEBUG", QByteArrayLiteral("1"));
    }

    m_inputMethodProcess = new QProcess(this);
    m_inputMethodProcess->setProcessChannelMode(QProcess::ForwardedErrorChannel);
    m_inputMethodProcess->setProcessEnvironment(environment);
    m_inputMethodProcess->setProgram(program);
    m_inputMethodProcess->setArguments(arguments);
    m_inputMethodProcess->start();
    close(socket);
    connect(m_inputMethodProcess, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished), this, [this](int exitCode, QProcess::ExitStatus exitStatus) {
        if (exitStatus == QProcess::CrashExit) {
            m_inputMethodCrashes++;
            m_inputMethodCrashTimer.start();
            qWarning() << "Input Method crashed" << m_inputMethodProcess->program() << m_inputMethodProcess->arguments() << exitCode << exitStatus;
            if (m_inputMethodCrashes < 5) {
                startInputMethod();
            } else {
                qWarning() << "Input Method keeps crashing, please fix" << m_inputMethodProcess->program() << m_inputMethodProcess->arguments();
                stopInputMethod();
            }
        }
    });
}
bool InputMethod::isActive() const
{
    return waylandServer()->inputMethod()->context();