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| 1 | /**************************************************************************** |
|---|---|
| 2 | ** |
| 3 | ** Copyright (C) 2017 Erik Larsson. |
| 4 | ** Contact: https://www.qt.io/licensing/ |
| 5 | ** |
| 6 | ** This file is part of the QtWaylandCompositor module of the Qt Toolkit. |
| 7 | ** |
| 8 | ** $QT_BEGIN_LICENSE:LGPL$ |
| 9 | ** Commercial License Usage |
| 10 | ** Licensees holding valid commercial Qt licenses may use this file in |
| 11 | ** accordance with the commercial license agreement provided with the |
| 12 | ** Software or, alternatively, in accordance with the terms contained in |
| 13 | ** a written agreement between you and The Qt Company. For licensing terms |
| 14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
| 15 | ** information use the contact form at https://www.qt.io/contact-us. |
| 16 | ** |
| 17 | ** GNU Lesser General Public License Usage |
| 18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
| 19 | ** General Public License version 3 as published by the Free Software |
| 20 | ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| 21 | ** packaging of this file. Please review the following information to |
| 22 | ** ensure the GNU Lesser General Public License version 3 requirements |
| 23 | ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| 24 | ** |
| 25 | ** GNU General Public License Usage |
| 26 | ** Alternatively, this file may be used under the terms of the GNU |
| 27 | ** General Public License version 2.0 or (at your option) the GNU General |
| 28 | ** Public license version 3 or any later version approved by the KDE Free |
| 29 | ** Qt Foundation. The licenses are as published by the Free Software |
| 30 | ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| 31 | ** included in the packaging of this file. Please review the following |
| 32 | ** information to ensure the GNU General Public License requirements will |
| 33 | ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| 34 | ** https://www.gnu.org/licenses/gpl-3.0.html. |
| 35 | ** |
| 36 | ** $QT_END_LICENSE$ |
| 37 | ** |
| 38 | ****************************************************************************/ |
| 39 | |
| 40 | #ifndef QWAYLANDCLIENTEXTENSION_H |
| 41 | #define QWAYLANDCLIENTEXTENSION_H |
| 42 | |
| 43 | #include <QObject> |
| 44 | #include <QtWaylandClient/qtwaylandclientglobal.h> |
| 45 | |
| 46 | struct wl_interface; |
| 47 | struct wl_registry; |
| 48 | |
| 49 | QT_BEGIN_NAMESPACE |
| 50 | |
| 51 | namespace QtWaylandClient { |
| 52 | class QWaylandIntegration; |
| 53 | } |
| 54 | |
| 55 | class QWaylandClientExtensionPrivate; |
| 56 | class QWaylandClientExtensionTemplatePrivate; |
| 57 | |
| 58 | class Q_WAYLAND_CLIENT_EXPORT QWaylandClientExtension : public QObject |
| 59 | { |
| 60 | Q_OBJECT |
| 61 | Q_DECLARE_PRIVATE(QWaylandClientExtension) |
| 62 | Q_PROPERTY(int protocolVersion READ version NOTIFY versionChanged) |
| 63 | Q_PROPERTY(bool active READ isActive NOTIFY activeChanged) |
| 64 | public: |
| 65 | QWaylandClientExtension(const int version); |
| 66 | |
| 67 | QtWaylandClient::QWaylandIntegration *integration() const; |
| 68 | int version() const; |
| 69 | bool isActive() const; |
| 70 | |
| 71 | virtual const struct wl_interface *extensionInterface() const = 0; |
| 72 | virtual void bind(struct ::wl_registry *registry, int id, int version) = 0; |
| 73 | protected: |
| 74 | void setVersion(const int version); |
| 75 | Q_SIGNALS: |
| 76 | void versionChanged(); |
| 77 | void activeChanged(); |
| 78 | |
| 79 | private Q_SLOTS: |
| 80 | void addRegistryListener(); |
| 81 | }; |
| 82 | |
| 83 | template <typename T> |
| 84 | class Q_WAYLAND_CLIENT_EXPORT QWaylandClientExtensionTemplate : public QWaylandClientExtension |
| 85 | { |
| 86 | Q_DECLARE_PRIVATE(QWaylandClientExtensionTemplate) |
| 87 | public: |
| 88 | QWaylandClientExtensionTemplate(const int ver) : |
| 89 | QWaylandClientExtension(ver) |
| 90 | { |
| 91 | } |
| 92 | |
| 93 | const struct wl_interface *extensionInterface() const override |
| 94 | { |
| 95 | return T::interface(); |
| 96 | } |
| 97 | |
| 98 | void bind(struct ::wl_registry *registry, int id, int ver) override |
| 99 | { |
| 100 | T* instance = static_cast<T *>(this); |
| 101 | // Make sure lowest version is used of the supplied version from the |
| 102 | // developer and the version specified in the protocol and also the |
| 103 | // compositor version. |
| 104 | if (this->version() > T::interface()->version) { |
| 105 | qWarning(msg: "Supplied protocol version to QWaylandClientExtensionTemplate is higher than the version of the protocol, using protocol version instead."); |
| 106 | } |
| 107 | int minVersion = qMin(ver, qMin(T::interface()->version, this->version())); |
| 108 | setVersion(minVersion); |
| 109 | instance->init(registry, id, minVersion); |
| 110 | } |
| 111 | }; |
| 112 | |
| 113 | QT_END_NAMESPACE |
| 114 | |
| 115 | #endif // QWAYLANDCLIENTEXTENSION_H |
| 116 |
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