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| |
| #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->primaryScreenNumber()); |
| const xcb_atom_t selection = connection->internAtom(netSysTray.constData()); |
| if (!selection) |
| return 0; |
| |
| return new QXcbSystemTrayTracker(connection, trayAtom, selection); |
| } |
| |
| QXcbSystemTrayTracker::QXcbSystemTrayTracker(QXcbConnection *connection, |
| xcb_atom_t trayAtom, |
| xcb_atom_t selection) |
| : QObject(connection) |
| , m_selection(selection) |
| , m_trayAtom(trayAtom) |
| , m_connection(connection) |
| { |
| } |
| |
| xcb_window_t QXcbSystemTrayTracker::locateTrayWindow(const QXcbConnection *connection, xcb_atom_t selection) |
| { |
| auto reply = Q_XCB_REPLY(xcb_get_selection_owner, connection->xcb_connection(), selection); |
| if (!reply) |
| return 0; |
| return reply->owner; |
| } |
| |
| // Request a window to be docked on the tray. |
| void QXcbSystemTrayTracker::requestSystemTrayWindowDock(xcb_window_t window) const |
| { |
| xcb_client_message_event_t trayRequest; |
| trayRequest.response_type = XCB_CLIENT_MESSAGE; |
| trayRequest.format = 32; |
| trayRequest.sequence = 0; |
| 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; |
| xcb_change_window_attributes(m_connection->xcb_connection(), m_trayWindow, mask, &value); |
| } |
| } |
| return m_trayWindow; |
| } |
| |
| inline void QXcbSystemTrayTracker::emitSystemTrayWindowChanged() |
| { |
| if (const QPlatformScreen *ps = m_connection->primaryScreen()) |
| 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 = XCB_WINDOW_NONE; |
| emitSystemTrayWindowChanged(); |
| } |
| } |
| |
| xcb_visualid_t QXcbSystemTrayTracker::visualId() |
| { |
| xcb_visualid_t visual = netSystemTrayVisual(); |
| if (visual == XCB_NONE) |
| visual = m_connection->primaryScreen()->screen()->root_visual; |
| return visual; |
| } |
| |
| xcb_visualid_t QXcbSystemTrayTracker::netSystemTrayVisual() |
| { |
| if (m_trayWindow == XCB_WINDOW_NONE) |
| return XCB_NONE; |
| |
| xcb_atom_t tray_atom = m_connection->atom(QXcbAtom::_NET_SYSTEM_TRAY_VISUAL); |
| |
| // Get the xcb property for the _NET_SYSTEM_TRAY_VISUAL atom |
| auto systray_atom_reply = Q_XCB_REPLY_UNCHECKED(xcb_get_property, m_connection->xcb_connection(), |
| false, m_trayWindow, |
| tray_atom, XCB_ATOM_VISUALID, 0, 1); |
| if (!systray_atom_reply) |
| return XCB_NONE; |
| |
| xcb_visualid_t systrayVisualId = XCB_NONE; |
| if (systray_atom_reply->value_len > 0 && xcb_get_property_value_length(systray_atom_reply.get()) > 0) { |
| xcb_visualid_t * vids = (uint32_t *)xcb_get_property_value(systray_atom_reply.get()); |
| systrayVisualId = vids[0]; |
| } |
| |
| return systrayVisualId; |
| } |
| |
| QT_END_NAMESPACE |