e862c2d222
This simplifies the client-side API for Wayland extensions by introducing QWaylandClientExtension/QWaylandClientExtensionTemplate classes. These classes takes care of the initialization of the extension if it matches the interface name. Change-Id: I7c4fb34563563af4be072cdebda54954b79cddbe Reviewed-by: Johan Helsing <johan.helsing@theqtcompany.com> Reviewed-by: Giulio Camuffo <giulio.camuffo@kdab.com>
106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 Erik Larsson.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL3$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPLv3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or later as published by the Free
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** Software Foundation and appearing in the file LICENSE.GPL included in
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** the packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 2.0 requirements will be
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** met: http://www.gnu.org/licenses/gpl-2.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QWAYLANDCLIENTEXTENSION_H
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#define QWAYLANDCLIENTEXTENSION_H
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#include <QObject>
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#include <qpa/qwindowsysteminterface.h>
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#include <QtWaylandClient/private/qwaylandclientexport_p.h>
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#include <QtWaylandClient/private/qwayland-wayland.h>
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QT_BEGIN_NAMESPACE
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namespace QtWaylandClient {
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class QWaylandIntegration;
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class QWaylandClientExtensionPrivate;
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class QWaylandClientExtensionTemplatePrivate;
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class Q_WAYLAND_CLIENT_EXPORT QWaylandClientExtension : public QObject
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{
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Q_OBJECT
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Q_DECLARE_PRIVATE(QWaylandClientExtension)
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Q_PROPERTY(int protocolVersion READ version NOTIFY versionChanged)
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public:
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QWaylandClientExtension(const int version);
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QWaylandIntegration *integration() const;
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int version() const;
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virtual const struct wl_interface *extensionInterface() const = 0;
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virtual void bind(struct ::wl_registry *registry, int id, int version) = 0;
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protected:
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void setVersion(const int version);
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Q_SIGNALS:
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void versionChanged();
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};
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template <typename T>
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class Q_WAYLAND_CLIENT_EXPORT QWaylandClientExtensionTemplate : public QWaylandClientExtension
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{
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Q_DECLARE_PRIVATE(QWaylandClientExtensionTemplate)
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public:
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QWaylandClientExtensionTemplate(const int ver) :
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QWaylandClientExtension(ver)
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{
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}
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const struct wl_interface *extensionInterface() const Q_DECL_OVERRIDE
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{
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return T::interface();
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}
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void bind(struct ::wl_registry *registry, int id, int ver)
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{
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T* instance = static_cast<T *>(this);
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// Make sure lowest version is used of the supplied version from the
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// developer and the version specified in the protocol and also the
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// compositor version.
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if (this->version() > T::interface()->version) {
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qWarning("Supplied protocol version to QWaylandClientExtensionTemplate is higher than the version of the protocol, using protocol version instead.");
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}
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int minVersion = qMin(ver, qMin(T::interface()->version, this->version()));
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setVersion(minVersion);
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instance->init(registry, id, minVersion);
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}
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};
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}
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QT_END_NAMESPACE
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#endif // QWAYLANDCLIENTEXTENSION_H
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