qwaylandcompositorextension.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qwaylandcompositorextension.h"
#include "qwaylandcompositorextension_p.h"
 
#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>
 
#include <wayland-server-core.h>
 
QT_BEGIN_NAMESPACE
 
QWaylandCompositorExtension::QWaylandCompositorExtension()
    : QWaylandObject(*new QWaylandCompositorExtensionPrivate())
{
}
 
QWaylandCompositorExtension::QWaylandCompositorExtension(QWaylandObject *container)
    : QWaylandObject(*new QWaylandCompositorExtensionPrivate())
{
    d_func()->extension_container = container;
    QCoreApplication::postEvent(this, new QEvent(QEvent::Polish));
}
 
QWaylandCompositorExtension::QWaylandCompositorExtension(QWaylandCompositorExtensionPrivate &dd)
    : QWaylandObject(dd)
{
}
 
QWaylandCompositorExtension::QWaylandCompositorExtension(QWaylandObject *container, QWaylandCompositorExtensionPrivate &dd)
    : QWaylandObject(dd)
{
    d_func()->extension_container = container;
    QCoreApplication::postEvent(this, new QEvent(QEvent::Polish));
}
 
QWaylandCompositorExtension::~QWaylandCompositorExtension()
{
    Q_D(QWaylandCompositorExtension);
    if (d->extension_container)
        d->extension_container->removeExtension(this);
}
 
QWaylandObject *QWaylandCompositorExtension::extensionContainer() const
{
    Q_D(const QWaylandCompositorExtension);
    return d->extension_container;
}
 
void QWaylandCompositorExtension::setExtensionContainer(QWaylandObject *container)
{
    Q_D(QWaylandCompositorExtension);
    d->extension_container = container;
}
 
void QWaylandCompositorExtension::initialize()
{
    Q_D(QWaylandCompositorExtension);
    if (d->initialized) {
        qWarning() << "QWaylandCompositorExtension:" << extensionInterface()->name << "is already initialized";
        return;
    }
 
    if (!d->extension_container && parent()) {
        QWaylandObject *parentObj = qobject_cast<QWaylandObject*>(parent());
        if (parentObj)
            setExtensionContainer(parentObj);
    }
 
    if (!d->extension_container) {
        qWarning() << "QWaylandCompositorExtension:" << extensionInterface()->name << "requests to initialize with no extension container set";
        return;
    }
 
    d->extension_container->addExtension(this);
    d->initialized = true;
}
 
bool QWaylandCompositorExtension::isInitialized() const
{
    Q_D(const QWaylandCompositorExtension);
    return d->initialized;
}
 
bool QWaylandCompositorExtension::event(QEvent *event)
{
    switch(event->type()) {
    case QEvent::Polish:
        if (!isInitialized())
            initialize();
        break;
    default:
        break;
    }
    return QWaylandObject::event(event);
}
 
QWaylandObject::QWaylandObject(QObject *parent)
    :QObject(parent)
{
}
 
QWaylandObject::QWaylandObject(QObjectPrivate &d, QObject *parent)
    :QObject(d, parent)
{
}
 
 
QWaylandObject::~QWaylandObject()
{
    for (QWaylandCompositorExtension *extension : std::as_const(extension_vector))
        QWaylandCompositorExtensionPrivate::get(extension)->extension_container = nullptr;
}
 
QWaylandCompositorExtension *QWaylandObject::extension(const QByteArray &name)
{
    for (int i = 0; i < extension_vector.size(); i++) {
        if (extension_vector.at(i)->extensionInterface()->name == name)
            return extension_vector.at(i);
    }
    return nullptr;
}
 
QWaylandCompositorExtension *QWaylandObject::extension(const wl_interface *interface)
{
    for (int i = 0; i < extension_vector.size(); i++) {
        if (extension_vector.at(i)->extensionInterface() == interface)
            return extension_vector.at(i);
    }
    return nullptr;
}
 
QList<QWaylandCompositorExtension *> QWaylandObject::extensions() const
{
    return extension_vector;
}
 
void QWaylandObject::addExtension(QWaylandCompositorExtension *extension)
{
    Q_ASSERT(!extension_vector.contains(extension));
    extension_vector.append(extension);
}
 
void QWaylandObject::removeExtension(QWaylandCompositorExtension *extension)
{
    if (!extension->isInitialized())
        return;
    Q_ASSERT(extension_vector.contains(extension));
    extension_vector.removeOne(extension);
}
 
QT_END_NAMESPACE
 
#include "moc_qwaylandcompositorextension.cpp"