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Diffstat (limited to 'src/plugins/platforms/xcb/qxcbsystemtraytracker.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbsystemtraytracker.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbsystemtraytracker.cpp b/src/plugins/platforms/xcb/qxcbsystemtraytracker.cpp new file mode 100644 index 0000000000..649d450907 --- /dev/null +++ b/src/plugins/platforms/xcb/qxcbsystemtraytracker.cpp @@ -0,0 +1,180 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins 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 +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qxcbsystemtraytracker.h" +#include "qxcbconnection.h" +#include "qxcbscreen.h" + +#include <QtCore/QDebug> +#include <QtCore/QRect> +#include <QtGui/QScreen> + +#include <qpa/qplatformnativeinterface.h> + +QT_BEGIN_NAMESPACE + +enum { + SystemTrayRequestDock = 0, + SystemTrayBeginMessage = 1, + SystemTrayCancelMessage = 2 +}; + +// QXcbSystemTrayTracker provides API for accessing the tray window and tracks +// its lifecyle by listening for its destruction and recreation. +// See http://standards.freedesktop.org/systemtray-spec/systemtray-spec-latest.html + +QXcbSystemTrayTracker *QXcbSystemTrayTracker::create(QXcbConnection *connection) +{ + // Selection, tray atoms for GNOME, NET WM Specification + const xcb_atom_t trayAtom = connection->atom(QXcbAtom::_NET_SYSTEM_TRAY_OPCODE); + if (!trayAtom) + return 0; + const QByteArray netSysTray = QByteArrayLiteral("_NET_SYSTEM_TRAY_S") + QByteArray::number(connection->primaryScreen()); + const xcb_atom_t selection = connection->internAtom(netSysTray.constData()); + if (!selection) + return 0; + return new QXcbSystemTrayTracker(connection, trayAtom, selection, connection); +} + +QXcbSystemTrayTracker::QXcbSystemTrayTracker(QXcbConnection *connection, + xcb_atom_t trayAtom, + xcb_atom_t selection, + QObject *parent) + : QObject(parent) + , m_selection(selection) + , m_trayAtom(trayAtom) + , m_connection(connection) + , m_trayWindow(0) +{ +} + +xcb_window_t QXcbSystemTrayTracker::locateTrayWindow(const QXcbConnection *connection, xcb_atom_t selection) +{ + xcb_get_selection_owner_cookie_t cookie = xcb_get_selection_owner(connection->xcb_connection(), selection); + xcb_get_selection_owner_reply_t *reply = xcb_get_selection_owner_reply(connection->xcb_connection(), cookie, 0); + if (!reply) + return 0; + const xcb_window_t result = reply->owner; + free(reply); + return result; +} + +// API for QPlatformNativeInterface/QPlatformSystemTrayIcon: Request a window +// to be docked on the tray. +void QXcbSystemTrayTracker::requestSystemTrayWindowDock(xcb_window_t window) const +{ + xcb_client_message_event_t trayRequest; + memset(&trayRequest, 0, sizeof(trayRequest)); + trayRequest.response_type = XCB_CLIENT_MESSAGE; + trayRequest.format = 32; + trayRequest.window = m_trayWindow; + trayRequest.type = m_trayAtom; + trayRequest.data.data32[0] = XCB_CURRENT_TIME; + trayRequest.data.data32[1] = SystemTrayRequestDock; + trayRequest.data.data32[2] = window; + xcb_send_event(m_connection->xcb_connection(), 0, m_trayWindow, XCB_EVENT_MASK_NO_EVENT, (const char *)&trayRequest); +} + +// API for QPlatformNativeInterface/QPlatformSystemTrayIcon: Return tray window. +xcb_window_t QXcbSystemTrayTracker::trayWindow() +{ + if (!m_trayWindow) { + m_trayWindow = QXcbSystemTrayTracker::locateTrayWindow(m_connection, m_selection); + if (m_trayWindow) { // Listen for DestroyNotify on tray. + m_connection->addWindowEventListener(m_trayWindow, this); + const quint32 mask = XCB_CW_EVENT_MASK; + const quint32 value = XCB_EVENT_MASK_STRUCTURE_NOTIFY; + Q_XCB_CALL2(xcb_change_window_attributes(m_connection->xcb_connection(), m_trayWindow, mask, &value), m_connection); + } + } + return m_trayWindow; +} + +// API for QPlatformNativeInterface/QPlatformSystemTrayIcon: Return the geometry of a +// a window parented on the tray. Determines the global geometry via XCB since mapToGlobal +// does not work for the QWindow parented on the tray. +QRect QXcbSystemTrayTracker::systemTrayWindowGlobalGeometry(xcb_window_t window) const +{ + xcb_connection_t *conn = m_connection->xcb_connection(); + xcb_get_geometry_reply_t *geomReply = + xcb_get_geometry_reply(conn, xcb_get_geometry(conn, window), 0); + if (!geomReply) + return QRect(); + + xcb_translate_coordinates_reply_t *translateReply = + xcb_translate_coordinates_reply(conn, xcb_translate_coordinates(conn, window, m_connection->rootWindow(), 0, 0), 0); + if (!translateReply) { + free(geomReply); + return QRect(); + } + + const QRect result(QPoint(translateReply->dst_x, translateReply->dst_y), QSize(geomReply->width, geomReply->height)); + free(translateReply); + return result; +} + +inline void QXcbSystemTrayTracker::emitSystemTrayWindowChanged() +{ + const int screen = m_connection->primaryScreen(); + if (screen >= 0 && screen < m_connection->screens().size()) { + const QPlatformScreen *ps = m_connection->screens().at(screen); + emit systemTrayWindowChanged(ps->screen()); + } +} + +// Client messages with the "MANAGER" atom on the root window indicate creation of a new tray. +void QXcbSystemTrayTracker::notifyManagerClientMessageEvent(const xcb_client_message_event_t *t) +{ + if (t->data.data32[1] == m_selection) + emitSystemTrayWindowChanged(); +} + +// Listen for destruction of the tray. +void QXcbSystemTrayTracker::handleDestroyNotifyEvent(const xcb_destroy_notify_event_t *event) +{ + if (event->window == m_trayWindow) { + m_connection->removeWindowEventListener(m_trayWindow); + m_trayWindow = 0; + emitSystemTrayWindowChanged(); + } +} + +QT_END_NAMESPACE |