qwaylandcompositorextension.h

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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QWAYLANDEXTENSION_H
#define QWAYLANDEXTENSION_H
 
#include <QtWaylandCompositor/qtwaylandcompositorglobal.h>
#include <QtWaylandCompositor/qtwaylandqmlinclude.h>
 
#include <QtCore/QObject>
 
struct wl_interface;
 
QT_BEGIN_NAMESPACE
 
class QWaylandCompositor;
class QWaylandCompositorExtension;
class QWaylandCompositorExtensionPrivate;
 
class Q_WAYLANDCOMPOSITOR_EXPORT QWaylandObject : public QObject
{
    Q_OBJECT
public:
    ~QWaylandObject() override;
 
    QWaylandCompositorExtension *extension(const QByteArray &name);
    QWaylandCompositorExtension *extension(const wl_interface *interface);
    QList<QWaylandCompositorExtension *> extensions() const;
    void addExtension(QWaylandCompositorExtension *extension);
    void removeExtension(QWaylandCompositorExtension *extension);
 
protected:
    QWaylandObject(QObject *parent = nullptr);
    QWaylandObject(QObjectPrivate &d, QObject *parent = nullptr);
    QList<QWaylandCompositorExtension *> extension_vector;
};
 
class Q_WAYLANDCOMPOSITOR_EXPORT QWaylandCompositorExtension : public QWaylandObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QWaylandCompositorExtension)
    QML_NAMED_ELEMENT(WaylandExtension)
    QML_ADDED_IN_VERSION(1, 0)
    QML_UNCREATABLE("")
public:
    QWaylandCompositorExtension();
    QWaylandCompositorExtension(QWaylandObject *container);
    ~QWaylandCompositorExtension() override;
 
    QWaylandObject *extensionContainer() const;
    void setExtensionContainer(QWaylandObject *container);
 
    virtual void initialize();
    bool isInitialized() const;
 
    virtual const struct wl_interface *extensionInterface() const = 0;
 
protected:
    QWaylandCompositorExtension(QWaylandCompositorExtensionPrivate &dd);
    QWaylandCompositorExtension(QWaylandObject *container, QWaylandCompositorExtensionPrivate &dd);
 
    bool event(QEvent *event) override;
};
 
template <typename T>
class Q_WAYLANDCOMPOSITOR_EXPORT QWaylandCompositorExtensionTemplate : public QWaylandCompositorExtension
{
public:
    QWaylandCompositorExtensionTemplate()
        : QWaylandCompositorExtension()
    { }
 
    QWaylandCompositorExtensionTemplate(QWaylandObject *container)
        : QWaylandCompositorExtension(container)
    { }
 
    const struct wl_interface *extensionInterface() const override
    {
        return T::interface();
    }
 
    static T *findIn(QWaylandObject *container)
    {
        if (!container) return nullptr;
        return qobject_cast<T *>(container->extension(T::interfaceName()));
    }
 
protected:
    QWaylandCompositorExtensionTemplate(QWaylandCompositorExtensionPrivate &dd)
        : QWaylandCompositorExtension(dd)
    { }
 
    QWaylandCompositorExtensionTemplate(QWaylandObject *container, QWaylandCompositorExtensionPrivate &dd)
        : QWaylandCompositorExtension(container,dd)
    { }
};
 
QT_END_NAMESPACE
 
#endif