qt-everywhere-src-5.15.1/qtwayland/src/client/global/qwaylandclientextension.cpp

/****************************************************************************
**
** Copyright (C) 2017 Erik Larsson.
** Contact: https://www.qt.io/licensing/
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** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
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#include "qwaylandclientextension.h"
#include "qwaylandclientextension_p.h"
#include <QtWaylandClient/private/qwaylanddisplay_p.h>
#include <QtWaylandClient/private/qwaylandintegration_p.h>
#include <QtGui/QGuiApplication>
#include <QtGui/qpa/qplatformnativeinterface.h>
#include <QtGui/private/qguiapplication_p.h>
#include <QtCore/QDebug>

QT_BEGIN_NAMESPACE

QWaylandClientExtensionPrivate::QWaylandClientExtensionPrivate()
{
    // Keep the possibility to use a custom waylandIntegration as a plugin,
    // but also add the possibility to run it as a QML component.
    waylandIntegration = static_cast<QtWaylandClient::QWaylandIntegration *>(QGuiApplicationPrivate::platformIntegration());
    if (!waylandIntegration)
        waylandIntegration = new QtWaylandClient::QWaylandIntegration();

    if (!waylandIntegration->nativeInterface()->nativeResourceForIntegration("wl_display"))
        qWarning() << "This application requires a Wayland platform plugin";
}

void QWaylandClientExtensionPrivate::handleRegistryGlobal(void *data, ::wl_registry *registry, uint32_t id,
                                                          const QString &interface, uint32_t version)
{
    QWaylandClientExtension *extension = static_cast<QWaylandClientExtension *>(data);
    if (interface == QLatin1String(extension->extensionInterface()->name) && !extension->d_func()->active) {
        extension->bind(registry, id, version);
        extension->d_func()->active = true;
        emit extension->activeChanged();
    }
}

void QWaylandClientExtension::addRegistryListener()
{
    Q_D(QWaylandClientExtension);
    d->waylandIntegration->display()->addRegistryListener(&QWaylandClientExtensionPrivate::handleRegistryGlobal, this);
}

QWaylandClientExtension::QWaylandClientExtension(const int ver)
    : QObject(*new QWaylandClientExtensionPrivate())
{
    Q_D(QWaylandClientExtension);
    d->version = ver;

    // The registry listener uses virtual functions and we don't want it to be called from
    // the constructor.
    QMetaObject::invokeMethod(this, "addRegistryListener", Qt::QueuedConnection);
}

QtWaylandClient::QWaylandIntegration *QWaylandClientExtension::integration() const
{
    Q_D(const QWaylandClientExtension);
    return d->waylandIntegration;
}

int QWaylandClientExtension::version() const
{
    Q_D(const QWaylandClientExtension);
    return d->version;
}

void QWaylandClientExtension::setVersion(const int ver)
{
    Q_D(QWaylandClientExtension);
    if (d->version != ver) {
        d->version = ver;
        emit versionChanged();
    }
}

bool QWaylandClientExtension::isActive() const
{
    Q_D(const QWaylandClientExtension);
    return d->active;
}

QT_END_NAMESPACE