| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 Erik Larsson. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtWaylandCompositor module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
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| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QWAYLANDCLIENTEXTENSION_H |
| #define QWAYLANDCLIENTEXTENSION_H |
| |
| #include <QObject> |
| #include <QtWaylandClient/qtwaylandclientglobal.h> |
| |
| struct wl_interface; |
| struct wl_registry; |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QtWaylandClient { |
| class QWaylandIntegration; |
| } |
| |
| class QWaylandClientExtensionPrivate; |
| class QWaylandClientExtensionTemplatePrivate; |
| |
| class Q_WAYLAND_CLIENT_EXPORT QWaylandClientExtension : public QObject |
| { |
| Q_OBJECT |
| Q_DECLARE_PRIVATE(QWaylandClientExtension) |
| Q_PROPERTY(int protocolVersion READ version NOTIFY versionChanged) |
| Q_PROPERTY(bool active READ isActive NOTIFY activeChanged) |
| public: |
| QWaylandClientExtension(const int version); |
| |
| QtWaylandClient::QWaylandIntegration *integration() const; |
| int version() const; |
| bool isActive() const; |
| |
| virtual const struct wl_interface *extensionInterface() const = 0; |
| virtual void bind(struct ::wl_registry *registry, int id, int version) = 0; |
| protected: |
| void setVersion(const int version); |
| Q_SIGNALS: |
| void versionChanged(); |
| void activeChanged(); |
| |
| private Q_SLOTS: |
| void addRegistryListener(); |
| }; |
| |
| template <typename T> |
| class Q_WAYLAND_CLIENT_EXPORT QWaylandClientExtensionTemplate : public QWaylandClientExtension |
| { |
| Q_DECLARE_PRIVATE(QWaylandClientExtensionTemplate) |
| public: |
| QWaylandClientExtensionTemplate(const int ver) : |
| QWaylandClientExtension(ver) |
| { |
| } |
| |
| const struct wl_interface *extensionInterface() const override |
| { |
| return T::interface(); |
| } |
| |
| void bind(struct ::wl_registry *registry, int id, int ver) override |
| { |
| T* instance = static_cast<T *>(this); |
| // Make sure lowest version is used of the supplied version from the |
| // developer and the version specified in the protocol and also the |
| // compositor version. |
| if (this->version() > T::interface()->version) { |
| qWarning("Supplied protocol version to QWaylandClientExtensionTemplate is higher than the version of the protocol, using protocol version instead."); |
| } |
| int minVersion = qMin(ver, qMin(T::interface()->version, this->version())); |
| setVersion(minVersion); |
| instance->init(registry, id, minVersion); |
| } |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QWAYLANDCLIENTEXTENSION_H |