diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbconnection.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbconnection.cpp | 645 |
1 files changed, 429 insertions, 216 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp index d2e08aecee..abb48034cd 100644 --- a/src/plugins/platforms/xcb/qxcbconnection.cpp +++ b/src/plugins/platforms/xcb/qxcbconnection.cpp @@ -60,6 +60,7 @@ #include <xcb/shm.h> #include <xcb/sync.h> #include <xcb/xfixes.h> +#include <xcb/xinerama.h> #ifdef XCB_USE_XLIB #include <X11/Xlib.h> @@ -107,6 +108,24 @@ Q_LOGGING_CATEGORY(lcQpaScreen, "qt.qpa.screen") #define XCB_GE_GENERIC 35 #endif +// Starting from the xcb version 1.9.3 struct xcb_ge_event_t has changed: +// - "pad0" became "extension" +// - "pad1" and "pad" became "pad0" +// New and old version of this struct share the following fields: +typedef struct qt_xcb_ge_event_t { + uint8_t response_type; + uint8_t extension; + uint16_t sequence; + uint32_t length; + uint16_t event_type; +} qt_xcb_ge_event_t; + +static inline bool isXIEvent(xcb_generic_event_t *event, int opCode) +{ + qt_xcb_ge_event_t *e = (qt_xcb_ge_event_t *)event; + return e->extension == opCode; +} + #ifdef XCB_USE_XLIB static const char * const xcbConnectionErrors[] = { "No error", /* Error 0 */ @@ -161,42 +180,6 @@ QXcbScreen* QXcbConnection::findScreenForOutput(xcb_window_t rootWindow, xcb_ran return 0; } -QXcbScreen* QXcbConnection::createScreen(QXcbVirtualDesktop* virtualDesktop, - xcb_randr_output_t outputId, - xcb_randr_get_output_info_reply_t *output) -{ - QString name; - if (output) - name = QString::fromUtf8((const char*)xcb_randr_get_output_info_name(output), - xcb_randr_get_output_info_name_length(output)); - else { - QByteArray displayName = m_displayName; - int dotPos = displayName.lastIndexOf('.'); - if (dotPos != -1) - displayName.truncate(dotPos); - name = QString::fromLocal8Bit(displayName) + QLatin1Char('.') + QString::number(virtualDesktop->number()); - } - - return new QXcbScreen(this, virtualDesktop, outputId, output, name); -} - -bool QXcbConnection::checkOutputIsPrimary(xcb_window_t rootWindow, xcb_randr_output_t output) -{ - xcb_generic_error_t *error = 0; - xcb_randr_get_output_primary_cookie_t primaryCookie = - xcb_randr_get_output_primary(xcb_connection(), rootWindow); - QScopedPointer<xcb_randr_get_output_primary_reply_t, QScopedPointerPodDeleter> primary ( - xcb_randr_get_output_primary_reply(xcb_connection(), primaryCookie, &error)); - if (!primary || error) { - qWarning("failed to get the primary output of the screen"); - free(error); - error = NULL; - } - const bool isPrimary = primary ? (primary->output == output) : false; - - return isPrimary; -} - QXcbVirtualDesktop* QXcbConnection::virtualDesktopForRootWindow(xcb_window_t rootWindow) { foreach (QXcbVirtualDesktop *virtualDesktop, m_virtualDesktops) { @@ -219,8 +202,9 @@ void QXcbConnection::updateScreens(const xcb_randr_notify_event_t *event) // Not for us return; - qCDebug(lcQpaScreen) << "QXcbConnection: XCB_RANDR_NOTIFY_CRTC_CHANGE:" << crtc.crtc; QXcbScreen *screen = findScreenForCrtc(crtc.window, crtc.crtc); + qCDebug(lcQpaScreen) << "QXcbConnection: XCB_RANDR_NOTIFY_CRTC_CHANGE:" << crtc.crtc + << "mode" << crtc.mode << "relevant screen" << screen; // Only update geometry when there's a valid mode on the CRTC // CRTC with node mode could mean that output has been disabled, and we'll // get RRNotifyOutputChange notification for that. @@ -242,17 +226,7 @@ void QXcbConnection::updateScreens(const xcb_randr_notify_event_t *event) if (screen && output.connection == XCB_RANDR_CONNECTION_DISCONNECTED) { qCDebug(lcQpaScreen) << "screen" << screen->name() << "has been disconnected"; - - // Known screen removed -> delete it - m_screens.removeOne(screen); - foreach (QXcbScreen *otherScreen, m_screens) - otherScreen->removeVirtualSibling((QPlatformScreen *) screen); - - QXcbIntegration::instance()->destroyScreen(screen); - - // QTBUG-40174, QTBUG-42985: If all screens are removed, wait - // and start rendering again later if a screen becomes available. - + destroyScreen(screen); } else if (!screen && output.connection == XCB_RANDR_CONNECTION_CONNECTED) { // New XRandR output is available and it's enabled if (output.crtc != XCB_NONE && output.mode != XCB_NONE) { @@ -261,65 +235,142 @@ void QXcbConnection::updateScreens(const xcb_randr_notify_event_t *event) QScopedPointer<xcb_randr_get_output_info_reply_t, QScopedPointerPodDeleter> outputInfo( xcb_randr_get_output_info_reply(xcb_connection(), outputInfoCookie, NULL)); - screen = createScreen(virtualDesktop, output.output, outputInfo.data()); - qCDebug(lcQpaScreen) << "output" << screen->name() << "is connected and enabled"; - - screen->setPrimary(checkOutputIsPrimary(output.window, output.output)); - foreach (QXcbScreen *otherScreen, m_screens) - if (otherScreen->root() == output.window) - otherScreen->addVirtualSibling(screen); - m_screens << screen; - QXcbIntegration::instance()->screenAdded(screen, screen->isPrimary()); - - // Windows which had null screens have already had expose events by now. - // They need to be told the screen is back, it's OK to render. - foreach (QWindow *window, QGuiApplication::topLevelWindows()) { - QXcbWindow *xcbWin = static_cast<QXcbWindow*>(window->handle()); - if (xcbWin) - xcbWin->maybeSetScreen(screen); + // Find a fake screen + foreach (QPlatformScreen *scr, virtualDesktop->screens()) { + QXcbScreen *xcbScreen = (QXcbScreen *)scr; + if (xcbScreen->output() == XCB_NONE) { + screen = xcbScreen; + break; + } + } + + if (screen) { + QString nameWas = screen->name(); + // Transform the fake screen into a physical screen + screen->setOutput(output.output, outputInfo.data()); + updateScreen(screen, output); + qCDebug(lcQpaScreen) << "output" << screen->name() + << "is connected and enabled; was fake:" << nameWas; + } else { + screen = createScreen(virtualDesktop, output, outputInfo.data()); + qCDebug(lcQpaScreen) << "output" << screen->name() << "is connected and enabled"; } } - // else ignore disabled screens } else if (screen) { - // Screen has been disabled -> remove if (output.crtc == XCB_NONE && output.mode == XCB_NONE) { + // Screen has been disabled xcb_randr_get_output_info_cookie_t outputInfoCookie = xcb_randr_get_output_info(xcb_connection(), output.output, output.config_timestamp); QScopedPointer<xcb_randr_get_output_info_reply_t, QScopedPointerPodDeleter> outputInfo( xcb_randr_get_output_info_reply(xcb_connection(), outputInfoCookie, NULL)); if (outputInfo->crtc == XCB_NONE) { qCDebug(lcQpaScreen) << "output" << screen->name() << "has been disabled"; - m_screens.removeOne(screen); - foreach (QXcbScreen *otherScreen, m_screens) - otherScreen->removeVirtualSibling((QPlatformScreen *) screen); - QXcbIntegration::instance()->destroyScreen(screen); + destroyScreen(screen); } else { qCDebug(lcQpaScreen) << "output" << screen->name() << "has been temporarily disabled for the mode switch"; + // Reset crtc to skip RRCrtcChangeNotify events, + // because they may be invalid in the middle of the mode switch + screen->setCrtc(XCB_NONE); } } else { - // Just update existing screen - screen->updateGeometry(output.config_timestamp); - const bool wasPrimary = screen->isPrimary(); - screen->setPrimary(checkOutputIsPrimary(output.window, output.output)); - if (screen->mode() != output.mode) - screen->updateRefreshRate(output.mode); - - // If the screen became primary, reshuffle the order in QGuiApplicationPrivate - // TODO: add a proper mechanism for updating primary screen - if (!wasPrimary && screen->isPrimary()) { - QScreen *realScreen = static_cast<QPlatformScreen*>(screen)->screen(); - QGuiApplicationPrivate::screen_list.removeOne(realScreen); - QGuiApplicationPrivate::screen_list.prepend(realScreen); - m_screens.removeOne(screen); - m_screens.prepend(screen); - } + updateScreen(screen, output); qCDebug(lcQpaScreen) << "output has changed" << screen; } } + + qCDebug(lcQpaScreen) << "primary output is" << m_screens.first()->name(); + } +} + +bool QXcbConnection::checkOutputIsPrimary(xcb_window_t rootWindow, xcb_randr_output_t output) +{ + xcb_generic_error_t *error = 0; + xcb_randr_get_output_primary_cookie_t primaryCookie = + xcb_randr_get_output_primary(xcb_connection(), rootWindow); + QScopedPointer<xcb_randr_get_output_primary_reply_t, QScopedPointerPodDeleter> primary ( + xcb_randr_get_output_primary_reply(xcb_connection(), primaryCookie, &error)); + if (!primary || error) { + qWarning("failed to get the primary output of the screen"); + free(error); + error = NULL; + } + const bool isPrimary = primary ? (primary->output == output) : false; + + return isPrimary; +} + +void QXcbConnection::updateScreen(QXcbScreen *screen, const xcb_randr_output_change_t &outputChange) +{ + screen->setCrtc(outputChange.crtc); // Set the new crtc, because it can be invalid + screen->updateGeometry(outputChange.config_timestamp); + if (screen->mode() != outputChange.mode) + screen->updateRefreshRate(outputChange.mode); + // Only screen which belongs to the primary virtual desktop can be a primary screen + if (screen->screenNumber() == m_primaryScreenNumber) { + if (!screen->isPrimary() && checkOutputIsPrimary(outputChange.window, outputChange.output)) { + screen->setPrimary(true); + + // If the screen became primary, reshuffle the order in QGuiApplicationPrivate + const int idx = m_screens.indexOf(screen); + if (idx > 0) { + m_screens.first()->setPrimary(false); + m_screens.swap(0, idx); + } + screen->virtualDesktop()->setPrimaryScreen(screen); + QXcbIntegration::instance()->setPrimaryScreen(screen); + } + } +} + +QXcbScreen *QXcbConnection::createScreen(QXcbVirtualDesktop *virtualDesktop, + const xcb_randr_output_change_t &outputChange, + xcb_randr_get_output_info_reply_t *outputInfo) +{ + QXcbScreen *screen = new QXcbScreen(this, virtualDesktop, outputChange.output, outputInfo); + // Only screen which belongs to the primary virtual desktop can be a primary screen + if (screen->screenNumber() == m_primaryScreenNumber) + screen->setPrimary(checkOutputIsPrimary(outputChange.window, outputChange.output)); + + if (screen->isPrimary()) { if (!m_screens.isEmpty()) - qCDebug(lcQpaScreen) << "primary output is" << m_screens.first()->name(); - else - qCDebug(lcQpaScreen) << "no outputs"; + m_screens.first()->setPrimary(false); + + m_screens.prepend(screen); + } else { + m_screens.append(screen); + } + virtualDesktop->addScreen(screen); + QXcbIntegration::instance()->screenAdded(screen, screen->isPrimary()); + + return screen; +} + +void QXcbConnection::destroyScreen(QXcbScreen *screen) +{ + QXcbVirtualDesktop *virtualDesktop = screen->virtualDesktop(); + if (virtualDesktop->screens().count() == 1) { + // If there are no other screens on the same virtual desktop, + // then transform the physical screen into a fake screen. + const QString nameWas = screen->name(); + screen->setOutput(XCB_NONE, Q_NULLPTR); + qCDebug(lcQpaScreen) << "transformed" << nameWas << "to fake" << screen; + } else { + // There is more than one screen on the same virtual desktop, remove the screen + m_screens.removeOne(screen); + virtualDesktop->removeScreen(screen); + + // When primary screen is removed, set the new primary screen + // which belongs to the primary virtual desktop. + if (screen->isPrimary()) { + QXcbScreen *newPrimary = (QXcbScreen *)virtualDesktop->screens().at(0); + newPrimary->setPrimary(true); + const int idx = m_screens.indexOf(newPrimary); + if (idx > 0) + m_screens.swap(0, idx); + QXcbIntegration::instance()->setPrimaryScreen(newPrimary); + } + + QXcbIntegration::instance()->destroyScreen(screen); } } @@ -327,8 +378,7 @@ void QXcbConnection::initializeScreens() { xcb_screen_iterator_t it = xcb_setup_roots_iterator(m_setup); int xcbScreenNumber = 0; // screen number in the xcb sense - QXcbScreen* primaryScreen = Q_NULLPTR; - bool hasOutputs = false; + QXcbScreen *primaryScreen = Q_NULLPTR; while (it.rem) { // Each "screen" in xcb terminology is a virtual desktop, // potentially a collection of separate juxtaposed monitors. @@ -338,7 +388,6 @@ void QXcbConnection::initializeScreens() QXcbVirtualDesktop *virtualDesktop = new QXcbVirtualDesktop(this, xcbScreen, xcbScreenNumber); m_virtualDesktops.append(virtualDesktop); QList<QPlatformScreen *> siblings; - int outputCount = 0; if (has_randr_extension) { xcb_generic_error_t *error = NULL; // RRGetScreenResourcesCurrent is fast but it may return nothing if the @@ -355,7 +404,7 @@ void QXcbConnection::initializeScreens() } else { xcb_timestamp_t timestamp; xcb_randr_output_t *outputs = Q_NULLPTR; - outputCount = xcb_randr_get_screen_resources_current_outputs_length(resources_current.data()); + int outputCount = xcb_randr_get_screen_resources_current_outputs_length(resources_current.data()); if (outputCount) { timestamp = resources_current->config_timestamp; outputs = xcb_randr_get_screen_resources_current_outputs(resources_current.data()); @@ -405,9 +454,8 @@ void QXcbConnection::initializeScreens() continue; } - QXcbScreen *screen = createScreen(virtualDesktop, outputs[i], output.data()); + QXcbScreen *screen = new QXcbScreen(this, virtualDesktop, outputs[i], output.data()); siblings << screen; - hasOutputs = true; m_screens << screen; // There can be multiple outputs per screen, use either @@ -427,46 +475,65 @@ void QXcbConnection::initializeScreens() } } } + } else if (has_xinerama_extension) { + // Xinerama is available + xcb_xinerama_query_screens_cookie_t cookie = xcb_xinerama_query_screens(m_connection); + xcb_xinerama_query_screens_reply_t *screens = xcb_xinerama_query_screens_reply(m_connection, + cookie, + Q_NULLPTR); + if (screens) { + xcb_xinerama_screen_info_iterator_t it = xcb_xinerama_query_screens_screen_info_iterator(screens); + while (it.rem) { + xcb_xinerama_screen_info_t *screen_info = it.data; + QXcbScreen *screen = new QXcbScreen(this, virtualDesktop, + XCB_NONE, Q_NULLPTR, + screen_info, it.index); + siblings << screen; + m_screens << screen; + xcb_xinerama_screen_info_next(&it); + } + free(screens); + } } - foreach (QPlatformScreen* s, siblings) - ((QXcbScreen*)s)->setVirtualSiblings(siblings); + if (siblings.isEmpty()) { + // If there are no XRandR outputs or XRandR extension is missing, + // then create a fake/legacy screen. + QXcbScreen *screen = new QXcbScreen(this, virtualDesktop, XCB_NONE, Q_NULLPTR); + qCDebug(lcQpaScreen) << "created fake screen" << screen; + m_screens << screen; + if (m_primaryScreenNumber == xcbScreenNumber) { + primaryScreen = screen; + primaryScreen->setPrimary(true); + } + siblings << screen; + } + virtualDesktop->setScreens(siblings); xcb_screen_next(&it); ++xcbScreenNumber; } // for each xcb screen - // If there's no randr extension, or there was some error above, or we found a - // screen which doesn't have outputs for some other reason (e.g. on VNC or ssh -X), - // but the dimensions are known anyway, and we don't already have any lingering - // (possibly disconnected) screens, then showing windows should be possible, - // so create one screen. (QTBUG-31389) - QXcbVirtualDesktop *virtualDesktop = m_virtualDesktops.value(0); - if (virtualDesktop && !hasOutputs && !virtualDesktop->size().isEmpty() && m_screens.isEmpty()) { - QXcbScreen *screen = createScreen(virtualDesktop, 0, Q_NULLPTR); - screen->setVirtualSiblings(QList<QPlatformScreen *>() << screen); - m_screens << screen; - primaryScreen = screen; - primaryScreen->setPrimary(true); - qCDebug(lcQpaScreen) << "found a screen with zero outputs" << screen; - } + foreach (QXcbVirtualDesktop *virtualDesktop, m_virtualDesktops) + virtualDesktop->subscribeToXFixesSelectionNotify(); - // Ensure the primary screen is first in the list - if (primaryScreen) { - Q_ASSERT(!m_screens.isEmpty()); - if (m_screens.first() != primaryScreen) { - m_screens.removeOne(primaryScreen); - m_screens.prepend(primaryScreen); + if (m_virtualDesktops.isEmpty()) { + qFatal("QXcbConnection: no screens available"); + } else { + // Ensure the primary screen is first on the list + if (primaryScreen) { + if (m_screens.first() != primaryScreen) { + m_screens.removeOne(primaryScreen); + m_screens.prepend(primaryScreen); + } } - } - // Push the screens to QApplication - QXcbIntegration *integration = QXcbIntegration::instance(); - foreach (QXcbScreen* screen, m_screens) { - qCDebug(lcQpaScreen) << "adding" << screen << "(Primary:" << screen->isPrimary() << ")"; - integration->screenAdded(screen, screen->isPrimary()); - } + // Push the screens to QGuiApplication + foreach (QXcbScreen *screen, m_screens) { + qCDebug(lcQpaScreen) << "adding" << screen << "(Primary:" << screen->isPrimary() << ")"; + QXcbIntegration::instance()->screenAdded(screen, screen->isPrimary()); + } - if (!m_screens.isEmpty()) qCDebug(lcQpaScreen) << "primary output is" << m_screens.first()->name(); + } } QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGrabServer, xcb_visualid_t defaultVisualId, const char *displayName) @@ -482,16 +549,19 @@ QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGra , xfixes_first_event(0) , xrandr_first_event(0) , xkb_first_event(0) + , has_xinerama_extension(false) , has_shape_extension(false) , has_randr_extension(false) , has_input_shape(false) , has_xkb(false) , m_buttons(0) , m_focusWindow(0) + , m_mouseGrabber(0) , m_clientLeader(0) , m_systemTrayTracker(0) , m_glIntegration(Q_NULLPTR) , m_xiGrab(false) + , m_qtSelectionOwner(0) { #ifdef XCB_USE_XLIB Display *dpy = XOpenDisplay(m_displayName.constData()); @@ -535,13 +605,13 @@ QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGra m_time = XCB_CURRENT_TIME; m_netWmUserTime = XCB_CURRENT_TIME; - initializeXRandr(); + if (!qEnvironmentVariableIsSet("QT_XCB_NO_XRANDR")) + initializeXRandr(); + if (!has_randr_extension) + initializeXinerama(); + initializeXFixes(); initializeScreens(); - if (m_screens.isEmpty()) - qFatal("QXcbConnection: no screens available"); - - initializeXFixes(); initializeXRender(); m_xi2Enabled = false; #if defined(XCB_USE_XINPUT2) @@ -590,9 +660,6 @@ QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGra qCDebug(QT_XCB_GLINTEGRATION) << "Failed to create xcb gl-integration"; sync(); - - if (qEnvironmentVariableIsEmpty("QT_IM_MODULE")) - qputenv("QT_IM_MODULE", QByteArray("compose")); } QXcbConnection::~QXcbConnection() @@ -1075,8 +1142,12 @@ void QXcbConnection::handleXcbEvent(xcb_generic_event_t *event) case XCB_FOCUS_OUT: HANDLE_PLATFORM_WINDOW_EVENT(xcb_focus_out_event_t, event, handleFocusOutEvent); case XCB_KEY_PRESS: - m_keyboard->updateXKBStateFromCore(((xcb_key_press_event_t *)event)->state); + { + xcb_key_press_event_t *kp = (xcb_key_press_event_t *)event; + m_keyboard->updateXKBStateFromCore(kp->state); + setTime(kp->time); HANDLE_KEYBOARD_EVENT(xcb_key_press_event_t, handleKeyPressEvent); + } case XCB_KEY_RELEASE: m_keyboard->updateXKBStateFromCore(((xcb_key_release_event_t *)event)->state); HANDLE_KEYBOARD_EVENT(xcb_key_release_event_t, handleKeyReleaseEvent); @@ -1110,12 +1181,21 @@ void QXcbConnection::handleXcbEvent(xcb_generic_event_t *event) handled = false; break; case XCB_PROPERTY_NOTIFY: - HANDLE_PLATFORM_WINDOW_EVENT(xcb_property_notify_event_t, window, handlePropertyNotifyEvent); + { + xcb_property_notify_event_t *pn = (xcb_property_notify_event_t *)event; + if (pn->atom == atom(QXcbAtom::_NET_WORKAREA)) { + QXcbVirtualDesktop *virtualDesktop = virtualDesktopForRootWindow(pn->window); + if (virtualDesktop) + virtualDesktop->updateWorkArea(); + } else { + HANDLE_PLATFORM_WINDOW_EVENT(xcb_property_notify_event_t, window, handlePropertyNotifyEvent); + } break; + } #if defined(XCB_USE_XINPUT2) case XCB_GE_GENERIC: // Here the windowEventListener is invoked from xi2HandleEvent() - if (m_xi2Enabled) + if (m_xi2Enabled && isXIEvent(event, m_xiOpCode)) xi2HandleEvent(reinterpret_cast<xcb_ge_event_t *>(event)); break; #endif @@ -1127,10 +1207,14 @@ void QXcbConnection::handleXcbEvent(xcb_generic_event_t *event) if (!handled) { if (response_type == xfixes_first_event + XCB_XFIXES_SELECTION_NOTIFY) { - setTime(((xcb_xfixes_selection_notify_event_t *)event)->timestamp); + xcb_xfixes_selection_notify_event_t *notify_event = (xcb_xfixes_selection_notify_event_t *)event; + setTime(notify_event->timestamp); #ifndef QT_NO_CLIPBOARD - m_clipboard->handleXFixesSelectionRequest((xcb_xfixes_selection_notify_event_t *)event); + m_clipboard->handleXFixesSelectionRequest(notify_event); #endif + foreach (QXcbVirtualDesktop *virtualDesktop, m_virtualDesktops) + virtualDesktop->handleXFixesSelectionNotify(notify_event); + handled = true; } else if (has_randr_extension && response_type == xrandr_first_event + XCB_RANDR_NOTIFY) { updateScreens((xcb_randr_notify_event_t *)event); @@ -1269,6 +1353,10 @@ void QXcbConnection::setFocusWindow(QXcbWindow *w) { m_focusWindow = w; } +void QXcbConnection::setMouseGrabber(QXcbWindow *w) +{ + m_mouseGrabber = w; +} void QXcbConnection::grabServer() { @@ -1288,10 +1376,12 @@ void QXcbConnection::sendConnectionEvent(QXcbAtom::Atom a, uint id) memset(&event, 0, sizeof(event)); const xcb_window_t eventListener = xcb_generate_id(m_connection); + xcb_screen_iterator_t it = xcb_setup_roots_iterator(m_setup); + xcb_screen_t *screen = it.data; Q_XCB_CALL(xcb_create_window(m_connection, XCB_COPY_FROM_PARENT, - eventListener, m_screens.at(0)->root(), + eventListener, screen->root, 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_ONLY, - m_screens.at(0)->screen()->root_visual, 0, 0)); + screen->root_visual, 0, 0)); event.response_type = XCB_CLIENT_MESSAGE; event.format = 32; @@ -1357,6 +1447,37 @@ xcb_timestamp_t QXcbConnection::getTimestamp() return timestamp; } +xcb_window_t QXcbConnection::getSelectionOwner(xcb_atom_t atom) const +{ + xcb_connection_t *c = xcb_connection(); + xcb_get_selection_owner_cookie_t cookie = xcb_get_selection_owner(c, atom); + xcb_get_selection_owner_reply_t *reply; + reply = xcb_get_selection_owner_reply(c, cookie, 0); + xcb_window_t win = reply->owner; + free(reply); + return win; +} + +xcb_window_t QXcbConnection::getQtSelectionOwner() +{ + if (!m_qtSelectionOwner) { + xcb_screen_t *xcbScreen = primaryVirtualDesktop()->screen(); + int x = 0, y = 0, w = 3, h = 3; + m_qtSelectionOwner = xcb_generate_id(xcb_connection()); + Q_XCB_CALL(xcb_create_window(xcb_connection(), + XCB_COPY_FROM_PARENT, // depth -- same as root + m_qtSelectionOwner, // window id + xcbScreen->root, // parent window id + x, y, w, h, + 0, // border width + XCB_WINDOW_CLASS_INPUT_OUTPUT, // window class + xcbScreen->root_visual, // visual + 0, // value mask + 0)); // value list + } + return m_qtSelectionOwner; +} + xcb_window_t QXcbConnection::rootWindow() { QXcbScreen *s = primaryScreen(); @@ -1437,6 +1558,105 @@ void *QXcbConnection::createVisualInfoForDefaultVisualId() const #endif +#if defined(XCB_USE_XINPUT2) +// it is safe to cast XI_* events here as long as we are only touching the first 32 bytes, +// after that position event needs memmove, see xi2PrepareXIGenericDeviceEvent +static inline bool isXIType(xcb_generic_event_t *event, int opCode, uint16_t type) +{ + if (!isXIEvent(event, opCode)) + return false; + + xXIGenericDeviceEvent *xiEvent = reinterpret_cast<xXIGenericDeviceEvent *>(event); + return xiEvent->evtype == type; +} +#endif +static inline bool isValid(xcb_generic_event_t *event) +{ + return event && (event->response_type & ~0x80); +} + +/*! \internal + + Compresses events of the same type to avoid swamping the event queue. + If event compression is not desired there are several options what developers can do: + + 1) Write responsive applications. We drop events that have been buffered in the event + queue while waiting on unresponsive GUI thread. + 2) Use QAbstractNativeEventFilter to get all events from X connection. This is not optimal + because it requires working with native event types. + 3) Or add public API to Qt for disabling event compression QTBUG-44964 + +*/ +bool QXcbConnection::compressEvent(xcb_generic_event_t *event, int currentIndex, QXcbEventArray *eventqueue) const +{ + uint responseType = event->response_type & ~0x80; + int nextIndex = currentIndex + 1; + + if (responseType == XCB_MOTION_NOTIFY) { + // compress XCB_MOTION_NOTIFY notify events + for (int j = nextIndex; j < eventqueue->size(); ++j) { + xcb_generic_event_t *next = eventqueue->at(j); + if (!isValid(next)) + continue; + if (next->response_type == XCB_MOTION_NOTIFY) + return true; + } + return false; + } +#if defined(XCB_USE_XINPUT2) + // compress XI_* events + if (responseType == XCB_GE_GENERIC) { + if (!m_xi2Enabled) + return false; + + // compress XI_Motion + if (isXIType(event, m_xiOpCode, XI_Motion)) { + for (int j = nextIndex; j < eventqueue->size(); ++j) { + xcb_generic_event_t *next = eventqueue->at(j); + if (!isValid(next)) + continue; + if (isXIType(next, m_xiOpCode, XI_Motion)) + return true; + } + return false; + } +#ifdef XCB_USE_XINPUT22 + // compress XI_TouchUpdate for the same touch point id + if (isXIType(event, m_xiOpCode, XI_TouchUpdate)) { + xXIDeviceEvent *xiDeviceEvent = reinterpret_cast<xXIDeviceEvent *>(event); + uint32_t id = xiDeviceEvent->detail % INT_MAX; + for (int j = nextIndex; j < eventqueue->size(); ++j) { + xcb_generic_event_t *next = eventqueue->at(j); + if (!isValid(next)) + continue; + if (isXIType(next, m_xiOpCode, XI_TouchUpdate)) { + xXIDeviceEvent *xiDeviceNextEvent = reinterpret_cast<xXIDeviceEvent *>(next); + if (id == xiDeviceNextEvent->detail % INT_MAX) + return true; + } + } + return false; + } +#endif + return false; + } +#endif + if (responseType == XCB_CONFIGURE_NOTIFY) { + // compress multiple configure notify events for the same window + for (int j = nextIndex; j < eventqueue->size(); ++j) { + xcb_generic_event_t *next = eventqueue->at(j); + if (isValid(next) && next->response_type == XCB_CONFIGURE_NOTIFY + && ((xcb_configure_notify_event_t *)next)->event == ((xcb_configure_notify_event_t*)event)->event) + { + return true; + } + } + return false; + } + + return false; +} + void QXcbConnection::processXcbEvents() { int connection_error = xcb_connection_has_error(xcb_connection()); @@ -1447,61 +1667,39 @@ void QXcbConnection::processXcbEvents() QXcbEventArray *eventqueue = m_reader->lock(); - for(int i = 0; i < eventqueue->size(); ++i) { + for (int i = 0; i < eventqueue->size(); ++i) { xcb_generic_event_t *event = eventqueue->at(i); if (!event) continue; QScopedPointer<xcb_generic_event_t, QScopedPointerPodDeleter> eventGuard(event); (*eventqueue)[i] = 0; - uint response_type = event->response_type & ~0x80; - - if (!response_type) { + if (!(event->response_type & ~0x80)) { handleXcbError((xcb_generic_error_t *)event); - } else { - if (response_type == XCB_MOTION_NOTIFY) { - // compress multiple motion notify events in a row - // to avoid swamping the event queue - xcb_generic_event_t *next = eventqueue->value(i+1, 0); - if (next && (next->response_type & ~0x80) == XCB_MOTION_NOTIFY) - continue; - } + continue; + } - if (response_type == XCB_CONFIGURE_NOTIFY) { - // compress multiple configure notify events for the same window - bool found = false; - for (int j = i; j < eventqueue->size(); ++j) { - xcb_generic_event_t *other = eventqueue->at(j); - if (other && (other->response_type & ~0x80) == XCB_CONFIGURE_NOTIFY - && ((xcb_configure_notify_event_t *)other)->event == ((xcb_configure_notify_event_t *)event)->event) - { - found = true; - break; - } - } - if (found) - continue; - } + if (compressEvent(event, i, eventqueue)) + continue; - bool accepted = false; - if (clipboard()->processIncr()) - clipboard()->incrTransactionPeeker(event, accepted); - if (accepted) - continue; + bool accepted = false; + if (clipboard()->processIncr()) + clipboard()->incrTransactionPeeker(event, accepted); + if (accepted) + continue; - QVector<PeekFunc>::iterator it = m_peekFuncs.begin(); - while (it != m_peekFuncs.end()) { - // These callbacks return true if the event is what they were - // waiting for, remove them from the list in that case. - if ((*it)(this, event)) - it = m_peekFuncs.erase(it); - else - ++it; - } - m_reader->unlock(); - handleXcbEvent(event); - m_reader->lock(); + QVector<PeekFunc>::iterator it = m_peekFuncs.begin(); + while (it != m_peekFuncs.end()) { + // These callbacks return true if the event is what they were + // waiting for, remove them from the list in that case. + if ((*it)(this, event)) + it = m_peekFuncs.erase(it); + else + ++it; } + m_reader->unlock(); + handleXcbEvent(event); + m_reader->lock(); } eventqueue->clear(); @@ -1746,7 +1944,8 @@ static const char * xcb_atomnames = { "_XSETTINGS_SETTINGS\0" "_COMPIZ_DECOR_PENDING\0" "_COMPIZ_DECOR_REQUEST\0" - "_COMPIZ_DECOR_DELETE_PIXMAP\0" // \0\0 terminates loop. + "_COMPIZ_DECOR_DELETE_PIXMAP\0" + "_COMPIZ_TOOLKIT_ACTION\0" // \0\0 terminates loop. }; QXcbAtom::Atom QXcbConnection::qatom(xcb_atom_t xatom) const @@ -1917,6 +2116,22 @@ void QXcbConnection::initializeXRandr() } } +void QXcbConnection::initializeXinerama() +{ + const xcb_query_extension_reply_t *reply = xcb_get_extension_data(m_connection, &xcb_xinerama_id); + if (!reply || !reply->present) + return; + + xcb_generic_error_t *error = Q_NULLPTR; + xcb_xinerama_is_active_cookie_t xinerama_query_cookie = xcb_xinerama_is_active(m_connection); + xcb_xinerama_is_active_reply_t *xinerama_is_active = xcb_xinerama_is_active_reply(m_connection, + xinerama_query_cookie, + &error); + has_xinerama_extension = xinerama_is_active && !error && xinerama_is_active->state; + free(error); + free(xinerama_is_active); +} + void QXcbConnection::initializeXShape() { const xcb_query_extension_reply_t *xshape_reply = xcb_get_extension_data(m_connection, &xcb_shape_id); @@ -2004,7 +2219,9 @@ void QXcbConnection::initializeXKB() bool QXcbConnection::xi2MouseEvents() const { static bool mouseViaXI2 = !qEnvironmentVariableIsSet("QT_XCB_NO_XI2_MOUSE"); - return mouseViaXI2; + // Don't use XInput2 when Xinerama extension is enabled, + // because it causes problems with multi-monitor setup. + return mouseViaXI2 && !has_xinerama_extension; } #if defined(XCB_USE_XINPUT2) @@ -2043,41 +2260,21 @@ bool QXcbConnection::xi2GetValuatorValueIfSet(void *event, int valuatorNum, doub return true; } -// Starting from the xcb version 1.9.3 struct xcb_ge_event_t has changed: -// - "pad0" became "extension" -// - "pad1" and "pad" became "pad0" -// New and old version of this struct share the following fields: -// NOTE: API might change again in the next release of xcb in which case this comment will -// need to be updated to reflect the reality. -typedef struct qt_xcb_ge_event_t { - uint8_t response_type; - uint8_t extension; - uint16_t sequence; - uint32_t length; - uint16_t event_type; -} qt_xcb_ge_event_t; - -bool QXcbConnection::xi2PrepareXIGenericDeviceEvent(xcb_ge_event_t *ev, int opCode) -{ - qt_xcb_ge_event_t *event = (qt_xcb_ge_event_t *)ev; - // xGenericEvent has "extension" on the second byte, the same is true for xcb_ge_event_t starting from - // the xcb version 1.9.3, prior to that it was called "pad0". - if (event->extension == opCode) { - // xcb event structs contain stuff that wasn't on the wire, the full_sequence field - // adds an extra 4 bytes and generic events cookie data is on the wire right after the standard 32 bytes. - // Move this data back to have the same layout in memory as it was on the wire - // and allow casting, overwriting the full_sequence field. - memmove((char*) event + 32, (char*) event + 36, event->length * 4); - return true; - } - return false; +void QXcbConnection::xi2PrepareXIGenericDeviceEvent(xcb_ge_event_t *event) +{ + // xcb event structs contain stuff that wasn't on the wire, the full_sequence field + // adds an extra 4 bytes and generic events cookie data is on the wire right after the standard 32 bytes. + // Move this data back to have the same layout in memory as it was on the wire + // and allow casting, overwriting the full_sequence field. + memmove((char*) event + 32, (char*) event + 36, event->length * 4); } #endif // defined(XCB_USE_XINPUT2) -QXcbSystemTrayTracker *QXcbConnection::systemTrayTracker() +QXcbSystemTrayTracker *QXcbConnection::systemTrayTracker() const { if (!m_systemTrayTracker) { - if ( (m_systemTrayTracker = QXcbSystemTrayTracker::create(this)) ) { + QXcbConnection *self = const_cast<QXcbConnection *>(this); + if ((self->m_systemTrayTracker = QXcbSystemTrayTracker::create(self))) { connect(m_systemTrayTracker, SIGNAL(systemTrayWindowChanged(QScreen*)), QGuiApplication::platformNativeInterface(), SIGNAL(systemTrayWindowChanged(QScreen*))); } @@ -2085,6 +2282,22 @@ QXcbSystemTrayTracker *QXcbConnection::systemTrayTracker() return m_systemTrayTracker; } +bool QXcbConnection::xEmbedSystemTrayAvailable() +{ + if (!QGuiApplicationPrivate::platformIntegration()) + return false; + QXcbConnection *connection = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration())->defaultConnection(); + return connection->systemTrayTracker(); +} + +bool QXcbConnection::xEmbedSystemTrayVisualHasAlphaChannel() +{ + if (!QGuiApplicationPrivate::platformIntegration()) + return false; + QXcbConnection *connection = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration())->defaultConnection(); + return connection->systemTrayTracker() && connection->systemTrayTracker()->visualHasAlphaChannel(); +} + bool QXcbConnection::event(QEvent *e) { if (e->type() == QEvent::User + 1) { |