/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** 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 The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/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 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 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qxcbwindow.h" #include #include #include #include #include #include #include "qxcbintegration.h" #include "qxcbconnection.h" #include "qxcbscreen.h" #if QT_CONFIG(draganddrop) #include "qxcbdrag.h" #endif #include "qxcbkeyboard.h" #include "qxcbimage.h" #include "qxcbwmsupport.h" #include "qxcbimage.h" #include "qxcbnativeinterface.h" #include "qxcbsystemtraytracker.h" #include #include #include #include #include #include #if QT_CONFIG(xcb_xinput) #include #endif #include #include #include #include #include #include #if QT_CONFIG(xcb_xlib) #define register /* C++17 deprecated register */ #include #include #undef register #endif #define XCOORD_MAX 16383 enum { defaultWindowWidth = 160, defaultWindowHeight = 160 }; QT_BEGIN_NAMESPACE Q_DECLARE_TYPEINFO(xcb_rectangle_t, Q_PRIMITIVE_TYPE); #undef FocusIn enum QX11EmbedFocusInDetail { XEMBED_FOCUS_CURRENT = 0, XEMBED_FOCUS_FIRST = 1, XEMBED_FOCUS_LAST = 2 }; enum QX11EmbedInfoFlags { XEMBED_MAPPED = (1 << 0), }; enum QX11EmbedMessageType { XEMBED_EMBEDDED_NOTIFY = 0, XEMBED_WINDOW_ACTIVATE = 1, XEMBED_WINDOW_DEACTIVATE = 2, XEMBED_REQUEST_FOCUS = 3, XEMBED_FOCUS_IN = 4, XEMBED_FOCUS_OUT = 5, XEMBED_FOCUS_NEXT = 6, XEMBED_FOCUS_PREV = 7, XEMBED_MODALITY_ON = 10, XEMBED_MODALITY_OFF = 11, XEMBED_REGISTER_ACCELERATOR = 12, XEMBED_UNREGISTER_ACCELERATOR = 13, XEMBED_ACTIVATE_ACCELERATOR = 14 }; const quint32 XEMBED_VERSION = 0; QXcbScreen *QXcbWindow::parentScreen() { return parent() ? static_cast(parent())->parentScreen() : xcbScreen(); } //QPlatformWindow::screenForGeometry version that uses deviceIndependentGeometry QXcbScreen *QXcbWindow::initialScreen() const { QWindowPrivate *windowPrivate = qt_window_private(window()); QScreen *screen = windowPrivate->screenForGeometry(window()->geometry()); return static_cast(screen->handle()); } // Returns \c true if we should set WM_TRANSIENT_FOR on \a w static inline bool isTransient(const QWindow *w) { return w->type() == Qt::Dialog || w->type() == Qt::Sheet || w->type() == Qt::Tool || w->type() == Qt::SplashScreen || w->type() == Qt::ToolTip || w->type() == Qt::Drawer || w->type() == Qt::Popup; } void QXcbWindow::setImageFormatForVisual(const xcb_visualtype_t *visual) { if (qt_xcb_imageFormatForVisual(connection(), m_depth, visual, &m_imageFormat, &m_imageRgbSwap)) return; switch (m_depth) { case 32: case 24: qWarning("Using RGB32 fallback, if this works your X11 server is reporting a bad screen format."); m_imageFormat = QImage::Format_RGB32; break; case 16: qWarning("Using RGB16 fallback, if this works your X11 server is reporting a bad screen format."); m_imageFormat = QImage::Format_RGB16; default: break; } } #if QT_CONFIG(xcb_xlib) static inline XTextProperty* qstringToXTP(Display *dpy, const QString& s) { #include static XTextProperty tp = { 0, 0, 0, 0 }; static bool free_prop = true; // we can't free tp.value in case it references // the data of the static QByteArray below. if (tp.value) { if (free_prop) XFree(tp.value); tp.value = 0; free_prop = true; } #if QT_CONFIG(textcodec) static const QTextCodec* mapper = QTextCodec::codecForLocale(); int errCode = 0; if (mapper) { QByteArray mapped = mapper->fromUnicode(s); char* tl[2]; tl[0] = mapped.data(); tl[1] = 0; errCode = XmbTextListToTextProperty(dpy, tl, 1, XStdICCTextStyle, &tp); if (errCode < 0) qCDebug(lcQpaXcb, "XmbTextListToTextProperty result code %d", errCode); } if (!mapper || errCode < 0) { mapper = QTextCodec::codecForName("latin1"); if (!mapper || !mapper->canEncode(s)) return nullptr; #endif static QByteArray qcs; qcs = s.toLatin1(); tp.value = (uchar*)qcs.data(); tp.encoding = XA_STRING; tp.format = 8; tp.nitems = qcs.length(); free_prop = false; #if QT_CONFIG(textcodec) } #else Q_UNUSED(dpy); #endif return &tp; } #endif // QT_CONFIG(xcb_xlib) // TODO move this into a utility function in QWindow or QGuiApplication static QWindow *childWindowAt(QWindow *win, const QPoint &p) { for (QObject *obj : win->children()) { if (obj->isWindowType()) { QWindow *childWin = static_cast(obj); if (childWin->isVisible()) { if (QWindow *recurse = childWindowAt(childWin, p)) return recurse; } } } if (!win->isTopLevel() && !(win->flags() & Qt::WindowTransparentForInput) && win->geometry().contains(win->parent()->mapFromGlobal(p))) { return win; } return nullptr; } static const char *wm_window_type_property_id = "_q_xcb_wm_window_type"; static const char *wm_window_role_property_id = "_q_xcb_wm_window_role"; QXcbWindow::QXcbWindow(QWindow *window) : QPlatformWindow(window) { setConnection(xcbScreen()->connection()); } enum : quint32 { baseEventMask = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE | XCB_EVENT_MASK_FOCUS_CHANGE, defaultEventMask = baseEventMask | XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE | XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION, transparentForInputEventMask = baseEventMask | XCB_EVENT_MASK_VISIBILITY_CHANGE | XCB_EVENT_MASK_RESIZE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_COLOR_MAP_CHANGE | XCB_EVENT_MASK_OWNER_GRAB_BUTTON }; void QXcbWindow::create() { destroy(); m_windowState = Qt::WindowNoState; m_trayIconWindow = isTrayIconWindow(window()); Qt::WindowType type = window()->type(); QXcbScreen *currentScreen = xcbScreen(); QXcbScreen *platformScreen = parent() ? parentScreen() : initialScreen(); QRect rect = QHighDpi::toNativePixels(window()->geometry(), platformScreen); if (type == Qt::Desktop) { m_window = platformScreen->root(); m_depth = platformScreen->screen()->root_depth; m_visualId = platformScreen->screen()->root_visual; const xcb_visualtype_t *visual = 0; if (connection()->hasDefaultVisualId()) { visual = platformScreen->visualForId(connection()->defaultVisualId()); if (visual) m_visualId = connection()->defaultVisualId(); if (!visual) qWarning("Could not use default visual id. Falling back to root_visual for screen."); } if (!visual) visual = platformScreen->visualForId(m_visualId); setImageFormatForVisual(visual); connection()->addWindowEventListener(m_window, this); return; } QPlatformWindow::setGeometry(rect); if (platformScreen != currentScreen) QWindowSystemInterface::handleWindowScreenChanged(window(), platformScreen->QPlatformScreen::screen()); const QSize minimumSize = windowMinimumSize(); if (rect.width() > 0 || rect.height() > 0) { rect.setWidth(qBound(1, rect.width(), XCOORD_MAX)); rect.setHeight(qBound(1, rect.height(), XCOORD_MAX)); } else if (minimumSize.width() > 0 || minimumSize.height() > 0) { rect.setSize(minimumSize); } else { rect.setWidth(QHighDpi::toNativePixels(int(defaultWindowWidth), platformScreen->QPlatformScreen::screen())); rect.setHeight(QHighDpi::toNativePixels(int(defaultWindowHeight), platformScreen->QPlatformScreen::screen())); } xcb_window_t xcb_parent_id = platformScreen->root(); if (parent()) { xcb_parent_id = static_cast(parent())->xcb_window(); m_embedded = parent()->isForeignWindow(); QSurfaceFormat parentFormat = parent()->window()->requestedFormat(); if (window()->surfaceType() != QSurface::OpenGLSurface && parentFormat.hasAlpha()) { window()->setFormat(parentFormat); } } resolveFormat(platformScreen->surfaceFormatFor(window()->requestedFormat())); const xcb_visualtype_t *visual = nullptr; if (m_trayIconWindow && connection()->systemTrayTracker()) { visual = platformScreen->visualForId(connection()->systemTrayTracker()->visualId()); } else if (connection()->hasDefaultVisualId()) { visual = platformScreen->visualForId(connection()->defaultVisualId()); if (!visual) qWarning() << "Failed to use requested visual id."; } if (parent()) { // When using a Vulkan QWindow via QWidget::createWindowContainer() we // must make sure the visuals are compatible. Now, the parent will be // of RasterGLSurface which typically chooses a GLX/EGL compatible // visual which may not be what the Vulkan window would choose. // Therefore, take the parent's visual. if (window()->surfaceType() == QSurface::VulkanSurface && parent()->window()->surfaceType() != QSurface::VulkanSurface) { visual = platformScreen->visualForId(static_cast(parent())->visualId()); } } if (!visual) visual = createVisual(); if (!visual) { qWarning() << "Falling back to using screens root_visual."; visual = platformScreen->visualForId(platformScreen->screen()->root_visual); } Q_ASSERT(visual); m_visualId = visual->visual_id; m_depth = platformScreen->depthOfVisual(m_visualId); setImageFormatForVisual(visual); quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_BORDER_PIXEL | XCB_CW_BIT_GRAVITY | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK; static auto haveOpenGL = []() { static const bool result = QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL); return result; }; if ((window()->supportsOpenGL() && haveOpenGL()) || m_format.hasAlpha()) { m_cmap = xcb_generate_id(xcb_connection()); xcb_create_colormap(xcb_connection(), XCB_COLORMAP_ALLOC_NONE, m_cmap, xcb_parent_id, m_visualId); mask |= XCB_CW_COLORMAP; } quint32 values[] = { XCB_BACK_PIXMAP_NONE, platformScreen->screen()->black_pixel, XCB_GRAVITY_NORTH_WEST, type == Qt::Popup || type == Qt::ToolTip || (window()->flags() & Qt::BypassWindowManagerHint), type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer, defaultEventMask, m_cmap }; m_window = xcb_generate_id(xcb_connection()); xcb_create_window(xcb_connection(), m_depth, m_window, // window id xcb_parent_id, // parent window id rect.x(), rect.y(), rect.width(), rect.height(), 0, // border width XCB_WINDOW_CLASS_INPUT_OUTPUT, // window class m_visualId, // visual mask, values); connection()->addWindowEventListener(m_window, this); propagateSizeHints(); xcb_atom_t properties[5]; int propertyCount = 0; properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW); properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS); properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING); if (connection()->hasXSync()) properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST); if (window()->flags() & Qt::WindowContextHelpButtonHint) properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP); xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::WM_PROTOCOLS), XCB_ATOM_ATOM, 32, propertyCount, properties); m_syncValue.hi = 0; m_syncValue.lo = 0; const QByteArray wmClass = QXcbIntegration::instance()->wmClass(); if (!wmClass.isEmpty()) { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::WM_CLASS), XCB_ATOM_STRING, 8, wmClass.size(), wmClass.constData()); } if (connection()->hasXSync()) { m_syncCounter = xcb_generate_id(xcb_connection()); xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue); xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER), XCB_ATOM_CARDINAL, 32, 1, &m_syncCounter); } // set the PID to let the WM kill the application if unresponsive quint32 pid = getpid(); xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32, 1, &pid); const QByteArray clientMachine = QSysInfo::machineHostName().toLocal8Bit(); if (!clientMachine.isEmpty()) { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::WM_CLIENT_MACHINE), XCB_ATOM_STRING, 8, clientMachine.size(), clientMachine.constData()); } // Create WM_HINTS property on the window, so we can xcb_icccm_get_wm_hints*() // from various setter functions for adjusting the hints. xcb_icccm_wm_hints_t hints; memset(&hints, 0, sizeof(hints)); hints.flags = XCB_ICCCM_WM_HINT_WINDOW_GROUP; hints.window_group = connection()->clientLeader(); xcb_icccm_set_wm_hints(xcb_connection(), m_window, &hints); xcb_window_t leader = connection()->clientLeader(); xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32, 1, &leader); /* Add XEMBED info; this operation doesn't initiate the embedding. */ quint32 data[] = { XEMBED_VERSION, XEMBED_MAPPED }; xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_XEMBED_INFO), atom(QXcbAtom::_XEMBED_INFO), 32, 2, (void *)data); #if QT_CONFIG(xcb_xinput) if (connection()->hasXInput2()) { if (connection()->xi2MouseEventsDisabled()) connection()->xi2SelectDeviceEventsCompatibility(m_window); else connection()->xi2SelectDeviceEvents(m_window); } #endif setWindowState(window()->windowStates()); setWindowFlags(window()->flags()); setWindowTitle(window()->title()); #if QT_CONFIG(xcb_xlib) // force sync to read outstanding requests - see QTBUG-29106 XSync(static_cast(platformScreen->connection()->xlib_display()), false); #endif #if QT_CONFIG(draganddrop) connection()->drag()->dndEnable(this, true); #endif const qreal opacity = qt_window_private(window())->opacity; if (!qFuzzyCompare(opacity, qreal(1.0))) setOpacity(opacity); setMask(QHighDpi::toNativeLocalRegion(window()->mask(), window())); if (window()->isTopLevel()) setWindowIcon(window()->icon()); if (window()->dynamicPropertyNames().contains(wm_window_role_property_id)) { QByteArray wmWindowRole = window()->property(wm_window_role_property_id).toByteArray(); setWmWindowRole(wmWindowRole); } if (m_trayIconWindow) m_embedded = requestSystemTrayWindowDock(); } QXcbWindow::~QXcbWindow() { destroy(); } QXcbForeignWindow::~QXcbForeignWindow() { // Clear window so that destroy() does not affect it m_window = 0; if (connection()->mouseGrabber() == this) connection()->setMouseGrabber(nullptr); if (connection()->mousePressWindow() == this) connection()->setMousePressWindow(nullptr); } void QXcbWindow::destroy() { if (connection()->focusWindow() == this) doFocusOut(); if (connection()->mouseGrabber() == this) connection()->setMouseGrabber(nullptr); if (m_syncCounter && connection()->hasXSync()) xcb_sync_destroy_counter(xcb_connection(), m_syncCounter); if (m_window) { if (m_netWmUserTimeWindow) { xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW)); // Some window managers, like metacity, do XSelectInput on the _NET_WM_USER_TIME_WINDOW window, // without trapping BadWindow (which crashes when the user time window is destroyed). connection()->sync(); xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow); m_netWmUserTimeWindow = XCB_NONE; } connection()->removeWindowEventListener(m_window); xcb_destroy_window(xcb_connection(), m_window); m_window = 0; } if (m_cmap) { xcb_free_colormap(xcb_connection(), m_cmap); } m_mapped = false; if (m_pendingSyncRequest) m_pendingSyncRequest->invalidate(); } void QXcbWindow::setGeometry(const QRect &rect) { QPlatformWindow::setGeometry(rect); propagateSizeHints(); QXcbScreen *currentScreen = xcbScreen(); QXcbScreen *newScreen = parent() ? parentScreen() : static_cast(screenForGeometry(rect)); if (!newScreen) newScreen = xcbScreen(); if (newScreen != currentScreen) QWindowSystemInterface::handleWindowScreenChanged(window(), newScreen->QPlatformScreen::screen()); if (qt_window_private(window())->positionAutomatic) { const quint32 mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; const qint32 values[] = { qBound(1, rect.width(), XCOORD_MAX), qBound(1, rect.height(), XCOORD_MAX), }; xcb_configure_window(xcb_connection(), m_window, mask, reinterpret_cast(values)); } else { const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; const qint32 values[] = { qBound(-XCOORD_MAX, rect.x(), XCOORD_MAX), qBound(-XCOORD_MAX, rect.y(), XCOORD_MAX), qBound(1, rect.width(), XCOORD_MAX), qBound(1, rect.height(), XCOORD_MAX), }; xcb_configure_window(xcb_connection(), m_window, mask, reinterpret_cast(values)); if (window()->parent() && !window()->transientParent()) { // Wait for server reply for parented windows to ensure that a few window // moves will come as a one event. This is important when native widget is // moved a few times in X and Y directions causing native scroll. Widget // must get single event to not trigger unwanted widget position changes // and then expose events causing backingstore flushes with incorrect // offset causing image crruption. connection()->sync(); } } xcb_flush(xcb_connection()); } QMargins QXcbWindow::frameMargins() const { if (m_dirtyFrameMargins) { if (connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_FRAME_EXTENTS))) { auto reply = Q_XCB_REPLY(xcb_get_property, xcb_connection(), false, m_window, atom(QXcbAtom::_NET_FRAME_EXTENTS), XCB_ATOM_CARDINAL, 0, 4); if (reply && reply->type == XCB_ATOM_CARDINAL && reply->format == 32 && reply->value_len == 4) { quint32 *data = (quint32 *)xcb_get_property_value(reply.get()); // _NET_FRAME_EXTENTS format is left, right, top, bottom m_frameMargins = QMargins(data[0], data[2], data[1], data[3]); m_dirtyFrameMargins = false; return m_frameMargins; } } // _NET_FRAME_EXTENTS property is not available, so // walk up the window tree to get the frame parent xcb_window_t window = m_window; xcb_window_t parent = m_window; bool foundRoot = false; const QVector &virtualRoots = connection()->wmSupport()->virtualRoots(); while (!foundRoot) { auto reply = Q_XCB_REPLY_UNCHECKED(xcb_query_tree, xcb_connection(), parent); if (reply) { if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1 || reply->parent == XCB_WINDOW_NONE) { foundRoot = true; } else { window = parent; parent = reply->parent; } } else { m_dirtyFrameMargins = false; m_frameMargins = QMargins(); return m_frameMargins; } } QPoint offset; auto reply = Q_XCB_REPLY(xcb_translate_coordinates, xcb_connection(), window, parent, 0, 0); if (reply) { offset = QPoint(reply->dst_x, reply->dst_y); } auto geom = Q_XCB_REPLY(xcb_get_geometry, xcb_connection(), parent); if (geom) { // -- // add the border_width for the window managers frame... some window managers // do not use a border_width of zero for their frames, and if we the left and // top strut, we ensure that pos() is absolutely correct. frameGeometry() // will still be incorrect though... perhaps i should have foffset as well, to // indicate the frame offset (equal to the border_width on X). // - Brad // -- copied from qwidget_x11.cpp int left = offset.x() + geom->border_width; int top = offset.y() + geom->border_width; int right = geom->width + geom->border_width - geometry().width() - offset.x(); int bottom = geom->height + geom->border_width - geometry().height() - offset.y(); m_frameMargins = QMargins(left, top, right, bottom); } m_dirtyFrameMargins = false; } return m_frameMargins; } void QXcbWindow::setVisible(bool visible) { if (visible) show(); else hide(); } void QXcbWindow::show() { if (window()->isTopLevel()) { // update WM_NORMAL_HINTS propagateSizeHints(); // update WM_TRANSIENT_FOR xcb_window_t transientXcbParent = 0; if (isTransient(window())) { const QWindow *tp = window()->transientParent(); if (tp && tp->handle()) transientXcbParent = static_cast(tp->handle())->winId(); // Default to client leader if there is no transient parent, else modal dialogs can // be hidden by their parents. if (!transientXcbParent) transientXcbParent = connection()->clientLeader(); if (transientXcbParent) { // ICCCM 4.1.2.6 xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32, 1, &transientXcbParent); } } if (!transientXcbParent) xcb_delete_property(xcb_connection(), m_window, XCB_ATOM_WM_TRANSIENT_FOR); // update _NET_WM_STATE setNetWmStateOnUnmappedWindow(); } // QWidget-attribute Qt::WA_ShowWithoutActivating. const auto showWithoutActivating = window()->property("_q_showWithoutActivating"); if (showWithoutActivating.isValid() && showWithoutActivating.toBool()) updateNetWmUserTime(0); else if (connection()->time() != XCB_TIME_CURRENT_TIME) updateNetWmUserTime(connection()->time()); if (m_trayIconWindow) return; // defer showing until XEMBED_EMBEDDED_NOTIFY xcb_map_window(xcb_connection(), m_window); if (QGuiApplication::modalWindow() == window()) requestActivateWindow(); xcbScreen()->windowShown(this); connection()->sync(); } void QXcbWindow::hide() { xcb_unmap_window(xcb_connection(), m_window); // send synthetic UnmapNotify event according to icccm 4.1.4 q_padded_xcb_event event = {}; event.response_type = XCB_UNMAP_NOTIFY; event.event = xcbScreen()->root(); event.window = m_window; event.from_configure = false; xcb_send_event(xcb_connection(), false, xcbScreen()->root(), XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event); xcb_flush(xcb_connection()); if (connection()->mouseGrabber() == this) connection()->setMouseGrabber(nullptr); if (QPlatformWindow *w = connection()->mousePressWindow()) { // Unset mousePressWindow when it (or one of its parents) is unmapped while (w) { if (w == this) { connection()->setMousePressWindow(nullptr); break; } w = w->parent(); } } m_mapped = false; // Hiding a modal window doesn't send an enter event to its transient parent when the // mouse is already over the parent window, so the enter event must be emulated. if (window()->isModal()) { // Get the cursor position at modal window screen const QPoint nativePos = xcbScreen()->cursor()->pos(); const QPoint cursorPos = QHighDpi::fromNativePixels(nativePos, xcbScreen()->screenForPosition(nativePos)->screen()); // Find the top level window at cursor position. // Don't use QGuiApplication::topLevelAt(): search only the virtual siblings of this window's screen QWindow *enterWindow = nullptr; const auto screens = xcbScreen()->virtualSiblings(); for (QPlatformScreen *screen : screens) { if (screen->geometry().contains(cursorPos)) { const QPoint devicePosition = QHighDpi::toNativePixels(cursorPos, screen->screen()); enterWindow = screen->topLevelAt(devicePosition); break; } } if (enterWindow && enterWindow != window()) { // Find the child window at cursor position, otherwise use the top level window if (QWindow *childWindow = childWindowAt(enterWindow, cursorPos)) enterWindow = childWindow; const QPoint localPos = enterWindow->mapFromGlobal(cursorPos); QWindowSystemInterface::handleEnterEvent(enterWindow, localPos * QHighDpiScaling::factor(enterWindow), nativePos); } } } bool QXcbWindow::relayFocusToModalWindow() const { QWindow *w = static_cast(QObjectPrivate::get(window()))->eventReceiver(); // get top-level window while (w && w->parent()) w = w->parent(); QWindow *modalWindow = 0; const bool blocked = QGuiApplicationPrivate::instance()->isWindowBlocked(w, &modalWindow); if (blocked && modalWindow != w) { modalWindow->requestActivate(); connection()->flush(); return true; } return false; } void QXcbWindow::doFocusIn() { if (relayFocusToModalWindow()) return; QWindow *w = static_cast(QObjectPrivate::get(window()))->eventReceiver(); connection()->setFocusWindow(w); QWindowSystemInterface::handleWindowActivated(w, Qt::ActiveWindowFocusReason); } static bool focusInPeeker(QXcbConnection *connection, xcb_generic_event_t *event) { if (!event) { // FocusIn event is not in the queue, proceed with FocusOut normally. QWindowSystemInterface::handleWindowActivated(nullptr, Qt::ActiveWindowFocusReason); return true; } uint response_type = event->response_type & ~0x80; if (response_type == XCB_FOCUS_IN) { // Ignore focus events that are being sent only because the pointer is over // our window, even if the input focus is in a different window. xcb_focus_in_event_t *e = (xcb_focus_in_event_t *) event; if (e->detail != XCB_NOTIFY_DETAIL_POINTER) return true; } /* We are also interested in XEMBED_FOCUS_IN events */ if (response_type == XCB_CLIENT_MESSAGE) { xcb_client_message_event_t *cme = (xcb_client_message_event_t *)event; if (cme->type == connection->atom(QXcbAtom::_XEMBED) && cme->data.data32[1] == XEMBED_FOCUS_IN) return true; } return false; } void QXcbWindow::doFocusOut() { connection()->setFocusWindow(nullptr); relayFocusToModalWindow(); // Do not set the active window to nullptr if there is a FocusIn coming. // The FocusIn handler will update QXcbConnection::setFocusWindow() accordingly. connection()->addPeekFunc(focusInPeeker); } struct QtMotifWmHints { quint32 flags, functions, decorations; qint32 input_mode; // unused quint32 status; // unused }; enum { MWM_HINTS_FUNCTIONS = (1L << 0), MWM_FUNC_ALL = (1L << 0), MWM_FUNC_RESIZE = (1L << 1), MWM_FUNC_MOVE = (1L << 2), MWM_FUNC_MINIMIZE = (1L << 3), MWM_FUNC_MAXIMIZE = (1L << 4), MWM_FUNC_CLOSE = (1L << 5), MWM_HINTS_DECORATIONS = (1L << 1), MWM_DECOR_ALL = (1L << 0), MWM_DECOR_BORDER = (1L << 1), MWM_DECOR_RESIZEH = (1L << 2), MWM_DECOR_TITLE = (1L << 3), MWM_DECOR_MENU = (1L << 4), MWM_DECOR_MINIMIZE = (1L << 5), MWM_DECOR_MAXIMIZE = (1L << 6), }; QXcbWindow::NetWmStates QXcbWindow::netWmStates() { NetWmStates result(0); auto reply = Q_XCB_REPLY_UNCHECKED(xcb_get_property, xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 0, 1024); if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) { const xcb_atom_t *states = static_cast(xcb_get_property_value(reply.get())); const xcb_atom_t *statesEnd = states + reply->length; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_ABOVE))) result |= NetWmStateAbove; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_BELOW))) result |= NetWmStateBelow; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN))) result |= NetWmStateFullScreen; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ))) result |= NetWmStateMaximizedHorz; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT))) result |= NetWmStateMaximizedVert; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MODAL))) result |= NetWmStateModal; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP))) result |= NetWmStateStaysOnTop; if (statesEnd != std::find(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION))) result |= NetWmStateDemandsAttention; } else { qCDebug(lcQpaXcb, "getting net wm state (%x), empty\n", m_window); } return result; } void QXcbWindow::setWindowFlags(Qt::WindowFlags flags) { Qt::WindowType type = static_cast(int(flags & Qt::WindowType_Mask)); if (type == Qt::ToolTip) flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint; if (type == Qt::Popup) flags |= Qt::X11BypassWindowManagerHint; const quint32 mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK; const quint32 values[] = { // XCB_CW_OVERRIDE_REDIRECT (flags & Qt::BypassWindowManagerHint) ? 1u : 0, // XCB_CW_EVENT_MASK (flags & Qt::WindowTransparentForInput) ? transparentForInputEventMask : defaultEventMask }; xcb_change_window_attributes(xcb_connection(), xcb_window(), mask, values); QXcbWindowFunctions::WmWindowTypes wmWindowTypes = 0; if (window()->dynamicPropertyNames().contains(wm_window_type_property_id)) { wmWindowTypes = static_cast( window()->property(wm_window_type_property_id).value()); } setWmWindowType(wmWindowTypes, flags); setNetWmState(flags); setMotifWmHints(flags); setTransparentForMouseEvents(flags & Qt::WindowTransparentForInput); updateDoesNotAcceptFocus(flags & Qt::WindowDoesNotAcceptFocus); } void QXcbWindow::setMotifWmHints(Qt::WindowFlags flags) { Qt::WindowType type = static_cast(int(flags & Qt::WindowType_Mask)); QtMotifWmHints mwmhints; memset(&mwmhints, 0, sizeof(mwmhints)); if (type != Qt::SplashScreen) { mwmhints.flags |= MWM_HINTS_DECORATIONS; bool customize = flags & Qt::CustomizeWindowHint; if (type == Qt::Window && !customize) { const Qt::WindowFlags defaultFlags = Qt::WindowSystemMenuHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint; if (!(flags & defaultFlags)) flags |= defaultFlags; } if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) { mwmhints.decorations |= MWM_DECOR_BORDER; mwmhints.decorations |= MWM_DECOR_RESIZEH; mwmhints.decorations |= MWM_DECOR_TITLE; if (flags & Qt::WindowSystemMenuHint) mwmhints.decorations |= MWM_DECOR_MENU; if (flags & Qt::WindowMinimizeButtonHint) { mwmhints.decorations |= MWM_DECOR_MINIMIZE; mwmhints.functions |= MWM_FUNC_MINIMIZE; } if (flags & Qt::WindowMaximizeButtonHint) { mwmhints.decorations |= MWM_DECOR_MAXIMIZE; mwmhints.functions |= MWM_FUNC_MAXIMIZE; } if (flags & Qt::WindowCloseButtonHint) mwmhints.functions |= MWM_FUNC_CLOSE; } } else { // if type == Qt::SplashScreen mwmhints.decorations = MWM_DECOR_ALL; } if (mwmhints.functions != 0) { mwmhints.flags |= MWM_HINTS_FUNCTIONS; mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE; } else { mwmhints.functions = MWM_FUNC_ALL; } if (!(flags & Qt::FramelessWindowHint) && flags & Qt::CustomizeWindowHint && flags & Qt::WindowTitleHint && !(flags & (Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint | Qt::WindowCloseButtonHint))) { // a special case - only the titlebar without any button mwmhints.flags = MWM_HINTS_FUNCTIONS; mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE; mwmhints.decorations = 0; } if (mwmhints.flags) { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_MOTIF_WM_HINTS), atom(QXcbAtom::_MOTIF_WM_HINTS), 32, 5, &mwmhints); } else { xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_MOTIF_WM_HINTS)); } } void QXcbWindow::setNetWmState(bool set, xcb_atom_t one, xcb_atom_t two) { xcb_client_message_event_t event; event.response_type = XCB_CLIENT_MESSAGE; event.format = 32; event.sequence = 0; event.window = m_window; event.type = atom(QXcbAtom::_NET_WM_STATE); event.data.data32[0] = set ? 1 : 0; event.data.data32[1] = one; event.data.data32[2] = two; event.data.data32[3] = 0; event.data.data32[4] = 0; xcb_send_event(xcb_connection(), 0, xcbScreen()->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event); } void QXcbWindow::setNetWmState(Qt::WindowStates state) { if ((m_windowState ^ state) & Qt::WindowMaximized) { setNetWmState(state & Qt::WindowMaximized, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ), atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT)); } if ((m_windowState ^ state) & Qt::WindowFullScreen) setNetWmState(state & Qt::WindowFullScreen, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN)); } void QXcbWindow::setNetWmState(Qt::WindowFlags flags) { setNetWmState(flags & Qt::WindowStaysOnTopHint, atom(QXcbAtom::_NET_WM_STATE_ABOVE), atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP)); setNetWmState(flags & Qt::WindowStaysOnBottomHint, atom(QXcbAtom::_NET_WM_STATE_BELOW)); } void QXcbWindow::setNetWmStateOnUnmappedWindow() { if (Q_UNLIKELY(m_mapped)) qCWarning(lcQpaXcb()) << "internal error: " << Q_FUNC_INFO << "called on mapped window"; NetWmStates states(0); const Qt::WindowFlags flags = window()->flags(); if (flags & Qt::WindowStaysOnTopHint) { states |= NetWmStateAbove; states |= NetWmStateStaysOnTop; } else if (flags & Qt::WindowStaysOnBottomHint) { states |= NetWmStateBelow; } if (window()->windowStates() & Qt::WindowFullScreen) states |= NetWmStateFullScreen; if (window()->windowStates() & Qt::WindowMaximized) { states |= NetWmStateMaximizedHorz; states |= NetWmStateMaximizedVert; } if (window()->modality() != Qt::NonModal) states |= NetWmStateModal; // According to EWMH: // "The Window Manager should remove _NET_WM_STATE whenever a window is withdrawn". // Which means that we don't have to read this property before changing it on a withdrawn // window. But there are situations where users want to adjust this property as well // (e4cea305ed2ba3c9f580bf9d16c59a1048af0e8a), so instead of overwriting the property // we first read it and then merge our hints with the existing values, allowing a user // to set custom hints. QVector atoms; auto reply = Q_XCB_REPLY_UNCHECKED(xcb_get_property, xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 0, 1024); if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM && reply->value_len > 0) { const xcb_atom_t *data = static_cast(xcb_get_property_value(reply.get())); atoms.resize(reply->value_len); memcpy((void *)&atoms.first(), (void *)data, reply->value_len * sizeof(xcb_atom_t)); } if (states & NetWmStateAbove && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_ABOVE))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_ABOVE)); if (states & NetWmStateBelow && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_BELOW))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_BELOW)); if (states & NetWmStateFullScreen && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN)); if (states & NetWmStateMaximizedHorz && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ)); if (states & NetWmStateMaximizedVert && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT)); if (states & NetWmStateModal && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_MODAL))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MODAL)); if (states & NetWmStateStaysOnTop && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP)); if (states & NetWmStateDemandsAttention && !atoms.contains(atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION))) atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION)); if (atoms.isEmpty()) { xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)); } else { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32, atoms.count(), atoms.constData()); } xcb_flush(xcb_connection()); } void QXcbWindow::setWindowState(Qt::WindowStates state) { if (state == m_windowState) return; if ((m_windowState & Qt::WindowMinimized) && !(state & Qt::WindowMinimized)) { xcb_map_window(xcb_connection(), m_window); } else if (!(m_windowState & Qt::WindowMinimized) && (state & Qt::WindowMinimized)) { xcb_client_message_event_t event; event.response_type = XCB_CLIENT_MESSAGE; event.format = 32; event.sequence = 0; event.window = m_window; event.type = atom(QXcbAtom::WM_CHANGE_STATE); event.data.data32[0] = XCB_ICCCM_WM_STATE_ICONIC; event.data.data32[1] = 0; event.data.data32[2] = 0; event.data.data32[3] = 0; event.data.data32[4] = 0; xcb_send_event(xcb_connection(), 0, xcbScreen()->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event); m_minimized = true; } setNetWmState(state); xcb_get_property_cookie_t cookie = xcb_icccm_get_wm_hints_unchecked(xcb_connection(), m_window); xcb_icccm_wm_hints_t hints; if (xcb_icccm_get_wm_hints_reply(xcb_connection(), cookie, &hints, nullptr)) { if (state & Qt::WindowMinimized) xcb_icccm_wm_hints_set_iconic(&hints); else xcb_icccm_wm_hints_set_normal(&hints); xcb_icccm_set_wm_hints(xcb_connection(), m_window, &hints); } connection()->sync(); m_windowState = state; } void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp) { xcb_window_t wid = m_window; // If timestamp == 0, then it means that the window should not be // initially activated. Don't update global user time for this // special case. if (timestamp != 0) connection()->setNetWmUserTime(timestamp); const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW)); if (m_netWmUserTimeWindow || isSupportedByWM) { if (!m_netWmUserTimeWindow) { m_netWmUserTimeWindow = xcb_generate_id(xcb_connection()); xcb_create_window(xcb_connection(), XCB_COPY_FROM_PARENT, // depth -- same as root m_netWmUserTimeWindow, // window id m_window, // parent window id -1, -1, 1, 1, 0, // border width XCB_WINDOW_CLASS_INPUT_OUTPUT, // window class m_visualId, // visual 0, // value mask 0); // value list wid = m_netWmUserTimeWindow; xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW), XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow); xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME)); QXcbWindow::setWindowTitle(connection(), m_netWmUserTimeWindow, QStringLiteral("Qt NET_WM User Time Window")); } else if (!isSupportedByWM) { // WM no longer supports it, then we should remove the // _NET_WM_USER_TIME_WINDOW atom. xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW)); xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow); m_netWmUserTimeWindow = XCB_NONE; } else { wid = m_netWmUserTimeWindow; } } xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME), XCB_ATOM_CARDINAL, 32, 1, ×tamp); } void QXcbWindow::setTransparentForMouseEvents(bool transparent) { if (!connection()->hasXFixes() || transparent == m_transparent) return; xcb_rectangle_t rectangle; xcb_rectangle_t *rect = 0; int nrect = 0; if (!transparent) { rectangle.x = 0; rectangle.y = 0; rectangle.width = geometry().width(); rectangle.height = geometry().height(); rect = &rectangle; nrect = 1; } xcb_xfixes_region_t region = xcb_generate_id(xcb_connection()); xcb_xfixes_create_region(xcb_connection(), region, nrect, rect); xcb_xfixes_set_window_shape_region_checked(xcb_connection(), m_window, XCB_SHAPE_SK_INPUT, 0, 0, region); xcb_xfixes_destroy_region(xcb_connection(), region); m_transparent = transparent; } void QXcbWindow::updateDoesNotAcceptFocus(bool doesNotAcceptFocus) { xcb_get_property_cookie_t cookie = xcb_icccm_get_wm_hints_unchecked(xcb_connection(), m_window); xcb_icccm_wm_hints_t hints; if (!xcb_icccm_get_wm_hints_reply(xcb_connection(), cookie, &hints, nullptr)) return; xcb_icccm_wm_hints_set_input(&hints, !doesNotAcceptFocus); xcb_icccm_set_wm_hints(xcb_connection(), m_window, &hints); } WId QXcbWindow::winId() const { return m_window; } void QXcbWindow::setParent(const QPlatformWindow *parent) { QPoint topLeft = geometry().topLeft(); xcb_window_t xcb_parent_id; if (parent) { const QXcbWindow *qXcbParent = static_cast(parent); xcb_parent_id = qXcbParent->xcb_window(); m_embedded = qXcbParent->isForeignWindow(); } else { xcb_parent_id = xcbScreen()->root(); m_embedded = false; } xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()); } void QXcbWindow::setWindowTitle(const QString &title) { setWindowTitle(connection(), m_window, title); } void QXcbWindow::setWindowIconText(const QString &title) { const QByteArray ba = title.toUtf8(); xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_ICON_NAME), atom(QXcbAtom::UTF8_STRING), 8, ba.length(), ba.constData()); } void QXcbWindow::setWindowIcon(const QIcon &icon) { QVector icon_data; if (!icon.isNull()) { QList availableSizes = icon.availableSizes(); if (availableSizes.isEmpty()) { // try to use default sizes since the icon can be a scalable image like svg. availableSizes.push_back(QSize(16,16)); availableSizes.push_back(QSize(32,32)); availableSizes.push_back(QSize(64,64)); availableSizes.push_back(QSize(128,128)); } for (int i = 0; i < availableSizes.size(); ++i) { QSize size = availableSizes.at(i); QPixmap pixmap = icon.pixmap(size); if (!pixmap.isNull()) { QImage image = pixmap.toImage().convertToFormat(QImage::Format_ARGB32); int pos = icon_data.size(); icon_data.resize(pos + 2 + image.width()*image.height()); icon_data[pos++] = image.width(); icon_data[pos++] = image.height(); memcpy(icon_data.data() + pos, image.bits(), image.width()*image.height()*4); } } } if (!icon_data.isEmpty()) { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_ICON), atom(QXcbAtom::CARDINAL), 32, icon_data.size(), (unsigned char *) icon_data.data()); } else { xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_ICON)); } } void QXcbWindow::raise() { const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE; const quint32 values[] = { XCB_STACK_MODE_ABOVE }; xcb_configure_window(xcb_connection(), m_window, mask, values); } void QXcbWindow::lower() { const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE; const quint32 values[] = { XCB_STACK_MODE_BELOW }; xcb_configure_window(xcb_connection(), m_window, mask, values); } void QXcbWindow::propagateSizeHints() { // update WM_NORMAL_HINTS xcb_size_hints_t hints; memset(&hints, 0, sizeof(hints)); const QRect rect = geometry(); QWindowPrivate *win = qt_window_private(window()); if (!win->positionAutomatic) xcb_icccm_size_hints_set_position(&hints, true, rect.x(), rect.y()); if (rect.width() < QWINDOWSIZE_MAX || rect.height() < QWINDOWSIZE_MAX) xcb_icccm_size_hints_set_size(&hints, true, rect.width(), rect.height()); /* Gravity describes how to interpret x and y values the next time window needs to be positioned on a screen. XCB_GRAVITY_STATIC : the left top corner of the client window XCB_GRAVITY_NORTH_WEST : the left top corner of the frame window */ auto gravity = win->positionPolicy == QWindowPrivate::WindowFrameInclusive ? XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC; xcb_icccm_size_hints_set_win_gravity(&hints, gravity); QSize minimumSize = windowMinimumSize(); QSize maximumSize = windowMaximumSize(); QSize baseSize = windowBaseSize(); QSize sizeIncrement = windowSizeIncrement(); if (minimumSize.width() > 0 || minimumSize.height() > 0) xcb_icccm_size_hints_set_min_size(&hints, qMin(XCOORD_MAX,minimumSize.width()), qMin(XCOORD_MAX,minimumSize.height())); if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX) xcb_icccm_size_hints_set_max_size(&hints, qMin(XCOORD_MAX, maximumSize.width()), qMin(XCOORD_MAX, maximumSize.height())); if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) { xcb_icccm_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height()); xcb_icccm_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height()); } xcb_icccm_set_wm_normal_hints(xcb_connection(), m_window, &hints); } void QXcbWindow::requestActivateWindow() { /* Never activate embedded windows; doing that would prevent the container * to re-gain the keyboard focus later. */ if (m_embedded) { QPlatformWindow::requestActivateWindow(); return; } if (!m_mapped) { m_deferredActivation = true; return; } m_deferredActivation = false; updateNetWmUserTime(connection()->time()); QWindow *focusWindow = QGuiApplication::focusWindow(); if (window()->isTopLevel() && !(window()->flags() & Qt::X11BypassWindowManagerHint) && (!focusWindow || !window()->isAncestorOf(focusWindow)) && connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_ACTIVE_WINDOW))) { xcb_client_message_event_t event; event.response_type = XCB_CLIENT_MESSAGE; event.format = 32; event.sequence = 0; event.window = m_window; event.type = atom(QXcbAtom::_NET_ACTIVE_WINDOW); event.data.data32[0] = 1; event.data.data32[1] = connection()->time(); event.data.data32[2] = focusWindow ? focusWindow->winId() : XCB_NONE; event.data.data32[3] = 0; event.data.data32[4] = 0; xcb_send_event(xcb_connection(), 0, xcbScreen()->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event); } else { xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()); } connection()->sync(); } QSurfaceFormat QXcbWindow::format() const { return m_format; } void QXcbWindow::setWmWindowTypeStatic(QWindow *window, QXcbWindowFunctions::WmWindowTypes windowTypes) { window->setProperty(wm_window_type_property_id, QVariant::fromValue(static_cast(windowTypes))); if (window->handle()) static_cast(window->handle())->setWmWindowType(windowTypes, window->flags()); } void QXcbWindow::setWindowIconTextStatic(QWindow *window, const QString &text) { if (window->handle()) static_cast(window->handle())->setWindowIconText(text); } void QXcbWindow::setWmWindowRoleStatic(QWindow *window, const QByteArray &role) { if (window->handle()) static_cast(window->handle())->setWmWindowRole(role); else window->setProperty(wm_window_role_property_id, role); } uint QXcbWindow::visualIdStatic(QWindow *window) { if (window && window->handle()) return static_cast(window->handle())->visualId(); return UINT_MAX; } QXcbWindowFunctions::WmWindowTypes QXcbWindow::wmWindowTypes() const { QXcbWindowFunctions::WmWindowTypes result(0); auto reply = Q_XCB_REPLY_UNCHECKED(xcb_get_property, xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 0, 1024); if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) { const xcb_atom_t *types = static_cast(xcb_get_property_value(reply.get())); const xcb_atom_t *types_end = types + reply->length; for (; types != types_end; types++) { QXcbAtom::Atom type = connection()->qatom(*types); switch (type) { case QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL: result |= QXcbWindowFunctions::Normal; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_DESKTOP: result |= QXcbWindowFunctions::Desktop; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_DOCK: result |= QXcbWindowFunctions::Dock; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLBAR: result |= QXcbWindowFunctions::Toolbar; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_MENU: result |= QXcbWindowFunctions::Menu; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY: result |= QXcbWindowFunctions::Utility; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH: result |= QXcbWindowFunctions::Splash; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG: result |= QXcbWindowFunctions::Dialog; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_DROPDOWN_MENU: result |= QXcbWindowFunctions::DropDownMenu; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_POPUP_MENU: result |= QXcbWindowFunctions::PopupMenu; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP: result |= QXcbWindowFunctions::Tooltip; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_NOTIFICATION: result |= QXcbWindowFunctions::Notification; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_COMBO: result |= QXcbWindowFunctions::Combo; break; case QXcbAtom::_NET_WM_WINDOW_TYPE_DND: result |= QXcbWindowFunctions::Dnd; break; case QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE: result |= QXcbWindowFunctions::KdeOverride; break; default: break; } } } return result; } void QXcbWindow::setWmWindowType(QXcbWindowFunctions::WmWindowTypes types, Qt::WindowFlags flags) { QVector atoms; // manual selection 1 (these are never set by Qt and take precedence) if (types & QXcbWindowFunctions::Normal) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL)); if (types & QXcbWindowFunctions::Desktop) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DESKTOP)); if (types & QXcbWindowFunctions::Dock) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DOCK)); if (types & QXcbWindowFunctions::Notification) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NOTIFICATION)); // manual selection 2 (Qt uses these during auto selection); if (types & QXcbWindowFunctions::Utility) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY)); if (types & QXcbWindowFunctions::Splash) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH)); if (types & QXcbWindowFunctions::Dialog) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG)); if (types & QXcbWindowFunctions::Tooltip) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP)); if (types & QXcbWindowFunctions::KdeOverride) atoms.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE)); // manual selection 3 (these can be set by Qt, but don't have a // corresponding Qt::WindowType). note that order of the *MENU // atoms is important if (types & QXcbWindowFunctions::Menu) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_MENU)); if (types & QXcbWindowFunctions::DropDownMenu) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DROPDOWN_MENU)); if (types & QXcbWindowFunctions::PopupMenu) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_POPUP_MENU)); if (types & QXcbWindowFunctions::Toolbar) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLBAR)); if (types & QXcbWindowFunctions::Combo) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_COMBO)); if (types & QXcbWindowFunctions::Dnd) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DND)); // automatic selection Qt::WindowType type = static_cast(int(flags & Qt::WindowType_Mask)); switch (type) { case Qt::Dialog: case Qt::Sheet: if (!(types & QXcbWindowFunctions::Dialog)) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG)); break; case Qt::Tool: case Qt::Drawer: if (!(types & QXcbWindowFunctions::Utility)) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY)); break; case Qt::ToolTip: if (!(types & QXcbWindowFunctions::Tooltip)) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP)); break; case Qt::SplashScreen: if (!(types & QXcbWindowFunctions::Splash)) atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH)); break; default: break; } if ((flags & Qt::FramelessWindowHint) && !(type & QXcbWindowFunctions::KdeOverride)) { // override netwm type - quick and easy for KDE noborder atoms.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE)); } if (atoms.size() == 1 && atoms.first() == atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL)) atoms.clear(); else atoms.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL)); if (atoms.isEmpty()) { xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_WINDOW_TYPE)); } else { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32, atoms.count(), atoms.constData()); } xcb_flush(xcb_connection()); } void QXcbWindow::setWmWindowRole(const QByteArray &role) { xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::WM_WINDOW_ROLE), XCB_ATOM_STRING, 8, role.size(), role.constData()); } void QXcbWindow::setParentRelativeBackPixmap() { const quint32 mask = XCB_CW_BACK_PIXMAP; const quint32 values[] = { XCB_BACK_PIXMAP_PARENT_RELATIVE }; xcb_change_window_attributes(xcb_connection(), m_window, mask, values); } bool QXcbWindow::requestSystemTrayWindowDock() { if (!connection()->systemTrayTracker()) return false; connection()->systemTrayTracker()->requestSystemTrayWindowDock(m_window); return true; } bool QXcbWindow::handleNativeEvent(xcb_generic_event_t *event) { auto eventType = connection()->nativeInterface()->nativeEventType(); long result = 0; // Used only by MS Windows return QWindowSystemInterface::handleNativeEvent(window(), eventType, event, &result); } void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event) { QRect rect(event->x, event->y, event->width, event->height); m_exposeRegion |= rect; bool pending = true; connection()->eventQueue()->peek(QXcbEventQueue::PeekRemoveMatchContinue, [this, &pending](xcb_generic_event_t *event, int type) { if (type != XCB_EXPOSE) return false; auto expose = reinterpret_cast(event); if (expose->window != m_window) return false; if (expose->count == 0) pending = false; m_exposeRegion |= QRect(expose->x, expose->y, expose->width, expose->height); free(expose); return true; }); // if count is non-zero there are more expose events pending if (event->count == 0 || !pending) { QWindowSystemInterface::handleExposeEvent(window(), m_exposeRegion); m_exposeRegion = QRegion(); } } void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event) { if (event->format != 32) return; if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) { xcb_atom_t protocolAtom = event->data.data32[0]; if (protocolAtom == atom(QXcbAtom::WM_DELETE_WINDOW)) { QWindowSystemInterface::handleCloseEvent(window()); } else if (protocolAtom == atom(QXcbAtom::WM_TAKE_FOCUS)) { connection()->setTime(event->data.data32[1]); relayFocusToModalWindow(); return; } else if (protocolAtom == atom(QXcbAtom::_NET_WM_PING)) { if (event->window == xcbScreen()->root()) return; xcb_client_message_event_t reply = *event; reply.response_type = XCB_CLIENT_MESSAGE; reply.window = xcbScreen()->root(); xcb_send_event(xcb_connection(), 0, xcbScreen()->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply); xcb_flush(xcb_connection()); } else if (protocolAtom == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) { connection()->setTime(event->data.data32[1]); m_syncValue.lo = event->data.data32[2]; m_syncValue.hi = event->data.data32[3]; if (connection()->hasXSync()) m_syncState = SyncReceived; #ifndef QT_NO_WHATSTHIS } else if (protocolAtom == atom(QXcbAtom::_NET_WM_CONTEXT_HELP)) { QWindowSystemInterface::handleEnterWhatsThisEvent(); #endif } else { qCWarning(lcQpaXcb, "Unhandled WM_PROTOCOLS (%s)", connection()->atomName(protocolAtom).constData()); } #if QT_CONFIG(draganddrop) } else if (event->type == atom(QXcbAtom::XdndEnter)) { connection()->drag()->handleEnter(this, event); } else if (event->type == atom(QXcbAtom::XdndPosition)) { connection()->drag()->handlePosition(this, event); } else if (event->type == atom(QXcbAtom::XdndLeave)) { connection()->drag()->handleLeave(this, event); } else if (event->type == atom(QXcbAtom::XdndDrop)) { connection()->drag()->handleDrop(this, event); #endif } else if (event->type == atom(QXcbAtom::_XEMBED)) { handleXEmbedMessage(event); } else if (event->type == atom(QXcbAtom::_NET_ACTIVE_WINDOW)) { doFocusIn(); } else if (event->type == atom(QXcbAtom::MANAGER) || event->type == atom(QXcbAtom::_NET_WM_STATE) || event->type == atom(QXcbAtom::WM_CHANGE_STATE)) { // Ignore _NET_WM_STATE, MANAGER which are relate to tray icons // and other messages. } else if (event->type == atom(QXcbAtom::_COMPIZ_DECOR_PENDING) || event->type == atom(QXcbAtom::_COMPIZ_DECOR_REQUEST) || event->type == atom(QXcbAtom::_COMPIZ_DECOR_DELETE_PIXMAP) || event->type == atom(QXcbAtom::_COMPIZ_TOOLKIT_ACTION) || event->type == atom(QXcbAtom::_GTK_LOAD_ICONTHEMES)) { //silence the _COMPIZ and _GTK messages for now } else { qCWarning(lcQpaXcb) << "Unhandled client message: " << connection()->atomName(event->type); } } void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event) { bool fromSendEvent = (event->response_type & 0x80); QPoint pos(event->x, event->y); if (!parent() && !fromSendEvent) { // Do not trust the position, query it instead. auto reply = Q_XCB_REPLY(xcb_translate_coordinates, xcb_connection(), xcb_window(), xcbScreen()->root(), 0, 0); if (reply) { pos.setX(reply->dst_x); pos.setY(reply->dst_y); } } const QRect actualGeometry = QRect(pos, QSize(event->width, event->height)); QPlatformScreen *newScreen = parent() ? parent()->screen() : screenForGeometry(actualGeometry); if (!newScreen) return; QWindowSystemInterface::handleGeometryChange(window(), actualGeometry); // QPlatformScreen::screen() is updated asynchronously, so we can't compare it // with the newScreen. Just send the WindowScreenChanged event and QGuiApplication // will make the comparison later. QWindowSystemInterface::handleWindowScreenChanged(window(), newScreen->screen()); // Send the synthetic expose event on resize only when the window is shrinked, // because the "XCB_GRAVITY_NORTH_WEST" flag doesn't send it automatically. if (!m_oldWindowSize.isEmpty() && (actualGeometry.width() < m_oldWindowSize.width() || actualGeometry.height() < m_oldWindowSize.height())) { QWindowSystemInterface::handleExposeEvent(window(), QRegion(0, 0, actualGeometry.width(), actualGeometry.height())); } m_oldWindowSize = actualGeometry.size(); if (connection()->hasXSync() && m_syncState == SyncReceived) m_syncState = SyncAndConfigureReceived; m_dirtyFrameMargins = true; } bool QXcbWindow::isExposed() const { return m_mapped; } bool QXcbWindow::isEmbedded() const { return m_embedded; } QPoint QXcbWindow::mapToGlobal(const QPoint &pos) const { if (!m_embedded) return QPlatformWindow::mapToGlobal(pos); QPoint ret; auto reply = Q_XCB_REPLY(xcb_translate_coordinates, xcb_connection(), xcb_window(), xcbScreen()->root(), pos.x(), pos.y()); if (reply) { ret.setX(reply->dst_x); ret.setY(reply->dst_y); } return ret; } QPoint QXcbWindow::mapFromGlobal(const QPoint &pos) const { if (!m_embedded) return QPlatformWindow::mapFromGlobal(pos); QPoint ret; auto reply = Q_XCB_REPLY(xcb_translate_coordinates, xcb_connection(), xcbScreen()->root(), xcb_window(), pos.x(), pos.y()); if (reply) { ret.setX(reply->dst_x); ret.setY(reply->dst_y); } return ret; } void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event) { if (event->window == m_window) { m_mapped = true; if (m_deferredActivation) requestActivateWindow(); QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(), geometry().size())); } } void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event) { if (event->window == m_window) { m_mapped = false; QWindowSystemInterface::handleExposeEvent(window(), QRegion()); } } void QXcbWindow::handleButtonPressEvent(int event_x, int event_y, int root_x, int root_y, int detail, Qt::KeyboardModifiers modifiers, xcb_timestamp_t timestamp, QEvent::Type type, Qt::MouseEventSource source) { const bool isWheel = detail >= 4 && detail <= 7; if (!isWheel && window() != QGuiApplication::focusWindow()) { QWindow *w = static_cast(QObjectPrivate::get(window()))->eventReceiver(); if (!(w->flags() & (Qt::WindowDoesNotAcceptFocus | Qt::BypassWindowManagerHint)) && w->type() != Qt::ToolTip && w->type() != Qt::Popup) { w->requestActivate(); } } updateNetWmUserTime(timestamp); if (m_embedded && !m_trayIconWindow) { if (window() != QGuiApplication::focusWindow()) { const QXcbWindow *container = static_cast(parent()); Q_ASSERT(container != 0); sendXEmbedMessage(container->xcb_window(), XEMBED_REQUEST_FOCUS); } } QPoint local(event_x, event_y); QPoint global(root_x, root_y); if (isWheel) { #if QT_CONFIG(xcb_xinput) if (!connection()->isAtLeastXI21()) { #endif QPoint angleDelta; if (detail == 4) angleDelta.setY(120); else if (detail == 5) angleDelta.setY(-120); else if (detail == 6) angleDelta.setX(120); else if (detail == 7) angleDelta.setX(-120); if (modifiers & Qt::AltModifier) std::swap(angleDelta.rx(), angleDelta.ry()); QWindowSystemInterface::handleWheelEvent(window(), timestamp, local, global, QPoint(), angleDelta, modifiers); #if QT_CONFIG(xcb_xinput) } #endif return; } connection()->setMousePressWindow(this); handleMouseEvent(timestamp, local, global, modifiers, type, source); } void QXcbWindow::handleButtonReleaseEvent(int event_x, int event_y, int root_x, int root_y, int detail, Qt::KeyboardModifiers modifiers, xcb_timestamp_t timestamp, QEvent::Type type, Qt::MouseEventSource source) { QPoint local(event_x, event_y); QPoint global(root_x, root_y); if (detail >= 4 && detail <= 7) { // mouse wheel, handled in handleButtonPressEvent() return; } if (connection()->buttonState() == Qt::NoButton) connection()->setMousePressWindow(nullptr); handleMouseEvent(timestamp, local, global, modifiers, type, source); } static inline bool doCheckUnGrabAncestor(QXcbConnection *conn) { /* Checking for XCB_NOTIFY_MODE_GRAB and XCB_NOTIFY_DETAIL_ANCESTOR prevents unwanted * enter/leave events on AwesomeWM on mouse button press. It also ignores duplicated * enter/leave events on Alt+Tab switching on some WMs with XInput2 events. * Without XInput2 events the (Un)grabAncestor cannot be checked when mouse button is * not pressed, otherwise (e.g. on Alt+Tab) it can igonre important enter/leave events. */ if (conn) { const bool mouseButtonsPressed = (conn->buttonState() != Qt::NoButton); #if QT_CONFIG(xcb_xinput) return mouseButtonsPressed || (conn->hasXInput2() && !conn->xi2MouseEventsDisabled()); #else return mouseButtonsPressed; #endif } return true; } static bool ignoreLeaveEvent(quint8 mode, quint8 detail, QXcbConnection *conn = nullptr) { return ((doCheckUnGrabAncestor(conn) && mode == XCB_NOTIFY_MODE_GRAB && detail == XCB_NOTIFY_DETAIL_ANCESTOR) || (mode == XCB_NOTIFY_MODE_UNGRAB && detail == XCB_NOTIFY_DETAIL_INFERIOR) || detail == XCB_NOTIFY_DETAIL_VIRTUAL || detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL); } static bool ignoreEnterEvent(quint8 mode, quint8 detail, QXcbConnection *conn = nullptr) { return ((doCheckUnGrabAncestor(conn) && mode == XCB_NOTIFY_MODE_UNGRAB && detail == XCB_NOTIFY_DETAIL_ANCESTOR) || (mode != XCB_NOTIFY_MODE_NORMAL && mode != XCB_NOTIFY_MODE_UNGRAB) || detail == XCB_NOTIFY_DETAIL_VIRTUAL || detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL); } void QXcbWindow::handleEnterNotifyEvent(int event_x, int event_y, int root_x, int root_y, quint8 mode, quint8 detail, xcb_timestamp_t timestamp) { connection()->setTime(timestamp); const QPoint global = QPoint(root_x, root_y); if (ignoreEnterEvent(mode, detail, connection()) || connection()->mousePressWindow()) return; #if QT_CONFIG(xcb_xinput) // Updates scroll valuators, as user might have done some scrolling outside our X client. connection()->xi2UpdateScrollingDevices(); #endif const QPoint local(event_x, event_y); QWindowSystemInterface::handleEnterEvent(window(), local, global); } void QXcbWindow::handleLeaveNotifyEvent(int root_x, int root_y, quint8 mode, quint8 detail, xcb_timestamp_t timestamp) { connection()->setTime(timestamp); if (ignoreLeaveEvent(mode, detail, connection()) || connection()->mousePressWindow()) return; // check if enter event is buffered auto event = connection()->eventQueue()->peek([](xcb_generic_event_t *event, int type) { if (type != XCB_ENTER_NOTIFY) return false; auto enter = reinterpret_cast(event); return !ignoreEnterEvent(enter->mode, enter->detail); }); auto enter = reinterpret_cast(event); QXcbWindow *enterWindow = enter ? connection()->platformWindowFromId(enter->event) : nullptr; if (enterWindow) { QPoint local(enter->event_x, enter->event_y); QPoint global = QPoint(root_x, root_y); QWindowSystemInterface::handleEnterLeaveEvent(enterWindow->window(), window(), local, global); } else { QWindowSystemInterface::handleLeaveEvent(window()); } free(enter); } void QXcbWindow::handleMotionNotifyEvent(int event_x, int event_y, int root_x, int root_y, Qt::KeyboardModifiers modifiers, xcb_timestamp_t timestamp, QEvent::Type type, Qt::MouseEventSource source) { QPoint local(event_x, event_y); QPoint global(root_x, root_y); // "mousePressWindow" can be NULL i.e. if a window will be grabbed or unmapped, so set it again here. // Unset "mousePressWindow" when mouse button isn't pressed - in some cases the release event won't arrive. const bool isMouseButtonPressed = (connection()->buttonState() != Qt::NoButton); const bool hasMousePressWindow = (connection()->mousePressWindow() != nullptr); if (isMouseButtonPressed && !hasMousePressWindow) connection()->setMousePressWindow(this); else if (hasMousePressWindow && !isMouseButtonPressed) connection()->setMousePressWindow(nullptr); handleMouseEvent(timestamp, local, global, modifiers, type, source); } void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event) { Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state); handleButtonPressEvent(event->event_x, event->event_y, event->root_x, event->root_y, event->detail, modifiers, event->time, QEvent::MouseButtonPress); } void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event) { Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state); handleButtonReleaseEvent(event->event_x, event->event_y, event->root_x, event->root_y, event->detail, modifiers, event->time, QEvent::MouseButtonRelease); } void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event) { Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state); handleMotionNotifyEvent(event->event_x, event->event_y, event->root_x, event->root_y, modifiers, event->time, QEvent::MouseMove); } #if QT_CONFIG(xcb_xinput) static inline int fixed1616ToInt(xcb_input_fp1616_t val) { return int(qreal(val) / 0x10000); } #define qt_xcb_mask_is_set(ptr, event) (((unsigned char*)(ptr))[(event)>>3] & (1 << ((event) & 7))) void QXcbWindow::handleXIMouseEvent(xcb_ge_event_t *event, Qt::MouseEventSource source) { QXcbConnection *conn = connection(); auto *ev = reinterpret_cast(event); if (ev->buttons_len > 0) { unsigned char *buttonMask = (unsigned char *) &ev[1]; // There is a bug in the evdev driver which leads to receiving mouse events without // XIPointerEmulated being set: https://bugs.freedesktop.org/show_bug.cgi?id=98188 // Filter them out by other attributes: when their source device is a touch screen // and the LMB is pressed. if (qt_xcb_mask_is_set(buttonMask, 1) && conn->isTouchScreen(ev->sourceid)) { if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled())) qCDebug(lcQpaXInput, "XI2 mouse event from touch device %d was ignored", ev->sourceid); return; } for (int i = 1; i <= 15; ++i) conn->setButtonState(conn->translateMouseButton(i), qt_xcb_mask_is_set(buttonMask, i)); } const Qt::KeyboardModifiers modifiers = conn->keyboard()->translateModifiers(ev->mods.effective); const int event_x = fixed1616ToInt(ev->event_x); const int event_y = fixed1616ToInt(ev->event_y); const int root_x = fixed1616ToInt(ev->root_x); const int root_y = fixed1616ToInt(ev->root_y); conn->keyboard()->updateXKBStateFromXI(&ev->mods, &ev->group); const Qt::MouseButton button = conn->xiToQtMouseButton(ev->detail); const char *sourceName = 0; if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled())) { const QMetaObject *metaObject = qt_getEnumMetaObject(source); const QMetaEnum me = metaObject->enumerator(metaObject->indexOfEnumerator(qt_getEnumName(source))); sourceName = me.valueToKey(source); } switch (ev->event_type) { case XCB_INPUT_BUTTON_PRESS: if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled())) qCDebug(lcQpaXInputEvents, "XI2 mouse press, button %d, time %d, source %s", button, ev->time, sourceName); conn->setButtonState(button, true); handleButtonPressEvent(event_x, event_y, root_x, root_y, ev->detail, modifiers, ev->time, QEvent::MouseButtonPress, source); break; case XCB_INPUT_BUTTON_RELEASE: if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled())) qCDebug(lcQpaXInputEvents, "XI2 mouse release, button %d, time %d, source %s", button, ev->time, sourceName); conn->setButtonState(button, false); handleButtonReleaseEvent(event_x, event_y, root_x, root_y, ev->detail, modifiers, ev->time, QEvent::MouseButtonRelease, source); break; case XCB_INPUT_MOTION: if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled())) qCDebug(lcQpaXInputEvents, "XI2 mouse motion %d,%d, time %d, source %s", event_x, event_y, ev->time, sourceName); handleMotionNotifyEvent(event_x, event_y, root_x, root_y, modifiers, ev->time, QEvent::MouseMove, source); break; default: qWarning() << "Unrecognized XI2 mouse event" << ev->event_type; break; } } void QXcbWindow::handleXIEnterLeave(xcb_ge_event_t *event) { auto *ev = reinterpret_cast(event); // Compare the window with current mouse grabber to prevent deliver events to any other windows. // If leave event occurs and the window is under mouse - allow to deliver the leave event. QXcbWindow *mouseGrabber = connection()->mouseGrabber(); if (mouseGrabber && mouseGrabber != this && (ev->event_type != XCB_INPUT_LEAVE || QGuiApplicationPrivate::currentMouseWindow != window())) { return; } const int root_x = fixed1616ToInt(ev->root_x); const int root_y = fixed1616ToInt(ev->root_y); switch (ev->event_type) { case XCB_INPUT_ENTER: { const int event_x = fixed1616ToInt(ev->event_x); const int event_y = fixed1616ToInt(ev->event_y); qCDebug(lcQpaXInputEvents, "XI2 mouse enter %d,%d, mode %d, detail %d, time %d", event_x, event_y, ev->mode, ev->detail, ev->time); handleEnterNotifyEvent(event_x, event_y, root_x, root_y, ev->mode, ev->detail, ev->time); break; } case XCB_INPUT_LEAVE: qCDebug(lcQpaXInputEvents, "XI2 mouse leave, mode %d, detail %d, time %d", ev->mode, ev->detail, ev->time); connection()->keyboard()->updateXKBStateFromXI(&ev->mods, &ev->group); handleLeaveNotifyEvent(root_x, root_y, ev->mode, ev->detail, ev->time); break; } } #endif QXcbWindow *QXcbWindow::toWindow() { return this; } void QXcbWindow::handleMouseEvent(xcb_timestamp_t time, const QPoint &local, const QPoint &global, Qt::KeyboardModifiers modifiers, QEvent::Type type, Qt::MouseEventSource source) { connection()->setTime(time); Qt::MouseButton button = type == QEvent::MouseMove ? Qt::NoButton : connection()->button(); QWindowSystemInterface::handleMouseEvent(window(), time, local, global, connection()->buttonState(), button, type, modifiers, source); } void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event) { handleEnterNotifyEvent(event->event_x, event->event_y, event->root_x, event->root_y, event->mode, event->detail, event->time); } void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event) { handleLeaveNotifyEvent(event->root_x, event->root_y, event->mode, event->detail, event->time); } void QXcbWindow::handlePropertyNotifyEvent(const xcb_property_notify_event_t *event) { connection()->setTime(event->time); const bool propertyDeleted = event->state == XCB_PROPERTY_DELETE; if (event->atom == atom(QXcbAtom::_NET_WM_STATE) || event->atom == atom(QXcbAtom::WM_STATE)) { if (propertyDeleted) return; Qt::WindowStates newState = Qt::WindowNoState; if (event->atom == atom(QXcbAtom::WM_STATE)) { // WM_STATE: Quick check for 'Minimize'. auto reply = Q_XCB_REPLY(xcb_get_property, xcb_connection(), 0, m_window, atom(QXcbAtom::WM_STATE), XCB_ATOM_ANY, 0, 1024); if (reply && reply->format == 32 && reply->type == atom(QXcbAtom::WM_STATE)) { const quint32 *data = (const quint32 *)xcb_get_property_value(reply.get()); if (reply->length != 0) m_minimized = (data[0] == XCB_ICCCM_WM_STATE_ICONIC || (data[0] == XCB_ICCCM_WM_STATE_WITHDRAWN && m_minimized)); } } if (m_minimized) newState = Qt::WindowMinimized; const NetWmStates states = netWmStates(); if (states & NetWmStateFullScreen) newState |= Qt::WindowFullScreen; if ((states & NetWmStateMaximizedHorz) && (states & NetWmStateMaximizedVert)) newState |= Qt::WindowMaximized; // Send Window state, compress events in case other flags (modality, etc) are changed. if (m_lastWindowStateEvent != newState) { QWindowSystemInterface::handleWindowStateChanged(window(), newState); m_lastWindowStateEvent = newState; m_windowState = newState; if ((m_windowState & Qt::WindowMinimized) && connection()->mouseGrabber() == this) connection()->setMouseGrabber(nullptr); } return; } else if (event->atom == atom(QXcbAtom::_NET_FRAME_EXTENTS)) { m_dirtyFrameMargins = true; } } void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *event) { // Ignore focus events that are being sent only because the pointer is over // our window, even if the input focus is in a different window. if (event->detail == XCB_NOTIFY_DETAIL_POINTER) return; doFocusIn(); } void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *event) { // Ignore focus events that are being sent only because the pointer is over // our window, even if the input focus is in a different window. if (event->detail == XCB_NOTIFY_DETAIL_POINTER) return; doFocusOut(); } void QXcbWindow::updateSyncRequestCounter() { if (m_syncState != SyncAndConfigureReceived) { // window manager does not expect a sync event yet. return; } if (connection()->hasXSync() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) { xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue); xcb_flush(xcb_connection()); m_syncValue.lo = 0; m_syncValue.hi = 0; m_syncState = NoSyncNeeded; } } const xcb_visualtype_t *QXcbWindow::createVisual() { return xcbScreen() ? xcbScreen()->visualForFormat(m_format) : nullptr; } bool QXcbWindow::setKeyboardGrabEnabled(bool grab) { if (grab && !connection()->canGrab()) return false; if (!grab) { xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME); return true; } auto reply = Q_XCB_REPLY(xcb_grab_keyboard, xcb_connection(), false, m_window, XCB_TIME_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); return reply && reply->status == XCB_GRAB_STATUS_SUCCESS; } bool QXcbWindow::setMouseGrabEnabled(bool grab) { if (!grab && connection()->mouseGrabber() == this) connection()->setMouseGrabber(nullptr); if (grab && !connection()->canGrab()) return false; #if QT_CONFIG(xcb_xinput) if (connection()->hasXInput2() && !connection()->xi2MouseEventsDisabled()) { bool result = connection()->xi2SetMouseGrabEnabled(m_window, grab); if (grab && result) connection()->setMouseGrabber(this); return result; } #endif if (!grab) { xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME); return true; } auto reply = Q_XCB_REPLY(xcb_grab_pointer, xcb_connection(), false, m_window, (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION), XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, XCB_WINDOW_NONE, XCB_CURSOR_NONE, XCB_TIME_CURRENT_TIME); bool result = reply && reply->status == XCB_GRAB_STATUS_SUCCESS; if (result) connection()->setMouseGrabber(this); return result; } bool QXcbWindow::windowEvent(QEvent *event) { switch (event->type()) { case QEvent::FocusIn: if (m_embedded && !m_trayIconWindow && !event->spontaneous()) { QFocusEvent *focusEvent = static_cast(event); switch (focusEvent->reason()) { case Qt::TabFocusReason: case Qt::BacktabFocusReason: { const QXcbWindow *container = static_cast(parent()); sendXEmbedMessage(container->xcb_window(), focusEvent->reason() == Qt::TabFocusReason ? XEMBED_FOCUS_NEXT : XEMBED_FOCUS_PREV); event->accept(); } break; default: break; } } break; default: break; } return QPlatformWindow::windowEvent(event); } bool QXcbWindow::startSystemResize(const QPoint &pos, Qt::Corner corner) { return startSystemMoveResize(pos, corner); } bool QXcbWindow::startSystemMove(const QPoint &pos) { return startSystemMoveResize(pos, 4); } bool QXcbWindow::startSystemMoveResize(const QPoint &pos, int corner) { return false; // ### FIXME QTBUG-69716 const xcb_atom_t moveResize = connection()->atom(QXcbAtom::_NET_WM_MOVERESIZE); if (!connection()->wmSupport()->isSupportedByWM(moveResize)) return false; const QPoint globalPos = QHighDpi::toNativePixels(window()->mapToGlobal(pos), window()->screen()); #if QT_CONFIG(xcb_xinput) // ### FIXME QTBUG-53389 bool startedByTouch = connection()->startSystemMoveResizeForTouchBegin(m_window, globalPos, corner); if (startedByTouch) { if (connection()->isUnity() || connection()->isGnome()) { // These desktops fail to move/resize via _NET_WM_MOVERESIZE (WM bug?). connection()->abortSystemMoveResizeForTouch(); return false; } // KWin, Openbox, AwesomeWM have been tested to work with _NET_WM_MOVERESIZE. } else #endif { // Started by mouse press. if (connection()->isUnity()) return false; // _NET_WM_MOVERESIZE on this WM is bouncy (WM bug?). doStartSystemMoveResize(globalPos, corner); } return true; } void QXcbWindow::doStartSystemMoveResize(const QPoint &globalPos, int corner) { const xcb_atom_t moveResize = connection()->atom(QXcbAtom::_NET_WM_MOVERESIZE); xcb_client_message_event_t xev; xev.response_type = XCB_CLIENT_MESSAGE; xev.type = moveResize; xev.sequence = 0; xev.window = xcb_window(); xev.format = 32; xev.data.data32[0] = globalPos.x(); xev.data.data32[1] = globalPos.y(); if (corner == 4) { xev.data.data32[2] = 8; // move } else { const bool bottom = corner == Qt::BottomRightCorner || corner == Qt::BottomLeftCorner; const bool left = corner == Qt::BottomLeftCorner || corner == Qt::TopLeftCorner; if (bottom) xev.data.data32[2] = left ? 6 : 4; // bottomleft/bottomright else xev.data.data32[2] = left ? 0 : 2; // topleft/topright } xev.data.data32[3] = XCB_BUTTON_INDEX_1; xev.data.data32[4] = 0; xcb_ungrab_pointer(connection()->xcb_connection(), XCB_CURRENT_TIME); xcb_send_event(connection()->xcb_connection(), false, xcbScreen()->root(), XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY, (const char *)&xev); } // Sends an XEmbed message. void QXcbWindow::sendXEmbedMessage(xcb_window_t window, quint32 message, quint32 detail, quint32 data1, quint32 data2) { xcb_client_message_event_t event; event.response_type = XCB_CLIENT_MESSAGE; event.format = 32; event.sequence = 0; event.window = window; event.type = atom(QXcbAtom::_XEMBED); event.data.data32[0] = connection()->time(); event.data.data32[1] = message; event.data.data32[2] = detail; event.data.data32[3] = data1; event.data.data32[4] = data2; xcb_send_event(xcb_connection(), false, window, XCB_EVENT_MASK_NO_EVENT, (const char *)&event); } static bool activeWindowChangeQueued(const QWindow *window) { /* Check from window system event queue if the next queued activation * targets a window other than @window. */ QWindowSystemInterfacePrivate::ActivatedWindowEvent *systemEvent = static_cast (QWindowSystemInterfacePrivate::peekWindowSystemEvent(QWindowSystemInterfacePrivate::ActivatedWindow)); return systemEvent && systemEvent->activated != window; } void QXcbWindow::handleXEmbedMessage(const xcb_client_message_event_t *event) { connection()->setTime(event->data.data32[0]); switch (event->data.data32[1]) { case XEMBED_WINDOW_ACTIVATE: case XEMBED_WINDOW_DEACTIVATE: break; case XEMBED_EMBEDDED_NOTIFY: xcb_map_window(xcb_connection(), m_window); xcbScreen()->windowShown(this); break; case XEMBED_FOCUS_IN: Qt::FocusReason reason; switch (event->data.data32[2]) { case XEMBED_FOCUS_FIRST: reason = Qt::TabFocusReason; break; case XEMBED_FOCUS_LAST: reason = Qt::BacktabFocusReason; break; case XEMBED_FOCUS_CURRENT: default: reason = Qt::OtherFocusReason; break; } connection()->setFocusWindow(window()); QWindowSystemInterface::handleWindowActivated(window(), reason); break; case XEMBED_FOCUS_OUT: if (window() == QGuiApplication::focusWindow() && !activeWindowChangeQueued(window())) { connection()->setFocusWindow(nullptr); QWindowSystemInterface::handleWindowActivated(nullptr); } break; } } static inline xcb_rectangle_t qRectToXCBRectangle(const QRect &r) { xcb_rectangle_t result; result.x = qMax(SHRT_MIN, r.x()); result.y = qMax(SHRT_MIN, r.y()); result.width = qMin((int)USHRT_MAX, r.width()); result.height = qMin((int)USHRT_MAX, r.height()); return result; } void QXcbWindow::setOpacity(qreal level) { if (!m_window) return; quint32 value = qRound64(qBound(qreal(0), level, qreal(1)) * 0xffffffff); xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_WINDOW_OPACITY), XCB_ATOM_CARDINAL, 32, 1, (uchar *)&value); } QVector qRegionToXcbRectangleList(const QRegion ®ion) { QVector rects; rects.reserve(region.rectCount()); for (const QRect &r : region) rects.push_back(qRectToXCBRectangle(r)); return rects; } void QXcbWindow::setMask(const QRegion ®ion) { if (!connection()->hasXShape()) return; if (region.isEmpty()) { xcb_shape_mask(connection()->xcb_connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, xcb_window(), 0, 0, XCB_NONE); } else { const auto rects = qRegionToXcbRectangleList(region); xcb_shape_rectangles(connection()->xcb_connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED, xcb_window(), 0, 0, rects.size(), &rects[0]); } } void QXcbWindow::setAlertState(bool enabled) { if (m_alertState == enabled) return; m_alertState = enabled; setNetWmState(enabled, atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION)); } uint QXcbWindow::visualId() const { return m_visualId; } bool QXcbWindow::needsSync() const { return m_syncState == SyncAndConfigureReceived; } void QXcbWindow::postSyncWindowRequest() { if (!m_pendingSyncRequest) { QXcbSyncWindowRequest *e = new QXcbSyncWindowRequest(this); m_pendingSyncRequest = e; QCoreApplication::postEvent(xcbScreen()->connection(), e); } } QXcbScreen *QXcbWindow::xcbScreen() const { return static_cast(screen()); } void QXcbWindow::setWindowTitle(const QXcbConnection *conn, xcb_window_t window, const QString &title) { QString fullTitle = formatWindowTitle(title, QString::fromUtf8(" \xe2\x80\x94 ")); // unicode character U+2014, EM DASH const QByteArray ba = std::move(fullTitle).toUtf8(); xcb_change_property(conn->xcb_connection(), XCB_PROP_MODE_REPLACE, window, conn->atom(QXcbAtom::_NET_WM_NAME), conn->atom(QXcbAtom::UTF8_STRING), 8, ba.length(), ba.constData()); #if QT_CONFIG(xcb_xlib) Display *dpy = static_cast(conn->xlib_display()); XTextProperty *text = qstringToXTP(dpy, title); if (text) XSetWMName(dpy, window, text); #endif xcb_flush(conn->xcb_connection()); } QString QXcbWindow::windowTitle(const QXcbConnection *conn, xcb_window_t window) { const xcb_atom_t utf8Atom = conn->atom(QXcbAtom::UTF8_STRING); auto reply = Q_XCB_REPLY_UNCHECKED(xcb_get_property, conn->xcb_connection(), false, window, conn->atom(QXcbAtom::_NET_WM_NAME), utf8Atom, 0, 1024); if (reply && reply->format == 8 && reply->type == utf8Atom) { const char *name = reinterpret_cast(xcb_get_property_value(reply.get())); return QString::fromUtf8(name, xcb_get_property_value_length(reply.get())); } reply = Q_XCB_REPLY_UNCHECKED(xcb_get_property, conn->xcb_connection(), false, window, conn->atom(QXcbAtom::WM_NAME), XCB_ATOM_STRING, 0, 1024); if (reply && reply->format == 8 && reply->type == XCB_ATOM_STRING) { const char *name = reinterpret_cast(xcb_get_property_value(reply.get())); return QString::fromLatin1(name, xcb_get_property_value_length(reply.get())); } return QString(); } QT_END_NAMESPACE