diff -rupN qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbconnection.cpp qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbconnection.cpp
--- qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbconnection.cpp 2015-10-13 06:35:27.000000000 +0200
+++ qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbconnection.cpp 2015-10-21 21:02:53.056198256 +0200
@@ -242,20 +241,18 @@ void QXcbConnection::updateScreens(const
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, true);
} 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) {
+ // QTBUG-40174, QTBUG-42985: If virtual screen exists,
+ // remove it and next add a physical screen.
+ if (m_onlyVirtualScreen) {
+ qCDebug(lcQpaScreen) << "default screen" << screen->name() << "has been removed";
+ destroyScreen(m_screens.at(0), false);
+ m_onlyVirtualScreen = false;
+ }
+
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(
@@ -270,34 +267,25 @@ void QXcbConnection::updateScreens(const
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);
- }
+ maybeSetScreenForTopLevelWindows(screen);
}
- // 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, true);
} else {
qCDebug(lcQpaScreen) << "output" << screen->name() << "has been temporarily disabled for the mode switch";
+ screen->setCrtc(XCB_NONE); //Invalidate crtc
}
} else {
// Just update existing screen
+ screen->setCrtc(output.crtc); //Set the new crtc, because it may be invalidated
screen->updateGeometry(output.config_timestamp);
const bool wasPrimary = screen->isPrimary();
screen->setPrimary(checkOutputIsPrimary(output.window, output.output));
@@ -316,19 +304,61 @@ void QXcbConnection::updateScreens(const
qCDebug(lcQpaScreen) << "output has changed" << screen;
}
}
+
if (!m_screens.isEmpty())
qCDebug(lcQpaScreen) << "primary output is" << m_screens.first()->name();
else
qCDebug(lcQpaScreen) << "no outputs";
}
}
+void QXcbConnection::destroyScreen(QXcbScreen *screen, bool canCreateVirtualScreen)
+{
+ // 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, add a virtual
+ // screen and remove it later if a physical screen becomes available.
+ if (canCreateVirtualScreen && m_screens.isEmpty())
+ createVirtualScreen();
+}
+void QXcbConnection::createVirtualScreen()
+{
+ QXcbVirtualDesktop *virtualDesktop = m_virtualDesktops.value(0);
+ if (virtualDesktop && !virtualDesktop->size().isEmpty()) {
+ Q_ASSERT(m_screens.isEmpty());
+ QXcbScreen *screen = createScreen(virtualDesktop, 0, Q_NULLPTR);
+ screen->setVirtualSiblings(QList<QPlatformScreen *>() << screen);
+ screen->setPrimary(true);
+ m_onlyVirtualScreen = true;
+ m_screens << screen;
+ QXcbIntegration::instance()->screenAdded(screen, screen->isPrimary());
+ maybeSetScreenForTopLevelWindows(screen);
+ qCDebug(lcQpaScreen) << "virtual screen was created" << screen;
+ }
+}
+void QXcbConnection::maybeSetScreenForTopLevelWindows(QXcbScreen *screen)
+{
+ // 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.
+ bool doFlush = false;
+ foreach (QWindow *window, QGuiApplication::topLevelWindows()) {
+ QXcbWindow *xcbWin = static_cast<QXcbWindow*>(window->handle());
+ if (xcbWin)
+ doFlush |= xcbWin->maybeSetScreen(screen);
+ }
+ // Flush Window System Events to prevent disappearing windows
+ if (doFlush)
+ QWindowSystemInterface::flushWindowSystemEvents();
+}
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;
while (it.rem) {
// Each "screen" in xcb terminology is a virtual desktop,
// potentially a collection of separate juxtaposed monitors.
@@ -407,7 +437,6 @@ void QXcbConnection::initializeScreens()
QXcbScreen *screen = createScreen(virtualDesktop, outputs[i], output.data());
siblings << screen;
- hasOutputs = true;
m_screens << screen;
// There can be multiple outputs per screen, use either
@@ -434,39 +463,23 @@ void QXcbConnection::initializeScreens()
++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;
- }
-
- // 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_screens.isEmpty()) {
+ createVirtualScreen();
+ } else {
+ // Ensure the primary screen is first in 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());
- }
-
- if (!m_screens.isEmpty())
- qCDebug(lcQpaScreen) << "primary output is" << m_screens.first()->name();
+ // Push the screens to QGuiApplication
+ foreach (QXcbScreen *screen, m_screens) {
+ qCDebug(lcQpaScreen) << "adding" << screen << "(Primary:" << screen->isPrimary() << ")";
+ QXcbIntegration::instance()->screenAdded(screen, screen->isPrimary());
+ }
+ }
}
QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGrabServer, xcb_visualid_t defaultVisualId, const char *displayName)
@@ -474,6 +487,7 @@ QXcbConnection::QXcbConnection(QXcbNativ
, m_canGrabServer(canGrabServer)
, m_defaultVisualId(defaultVisualId)
, m_primaryScreenNumber(0)
+ , m_onlyVirtualScreen(false)
, m_displayName(displayName ? QByteArray(displayName) : qgetenv("DISPLAY"))
, m_nativeInterface(nativeInterface)
#ifdef XCB_USE_XLIB
@@ -1110,8 +1124,19 @@ void QXcbConnection::handleXcbEvent(xcb_
handled = false;
break;
case XCB_PROPERTY_NOTIFY:
- HANDLE_PLATFORM_WINDOW_EVENT(xcb_property_notify_event_t, window, handlePropertyNotifyEvent);
+ {
+ // Update geometry for all screens, because availableGeometry must be changed
+ const xcb_property_notify_event_t *propertyNotifyEvent = (const xcb_property_notify_event_t *)event;
+ if (propertyNotifyEvent->atom == atom(QXcbAtom::_NET_WORKAREA)) {
+ foreach (QXcbScreen *screen, m_screens) {
+ if (propertyNotifyEvent->window == screen->root())
+ screen->updateGeometry(propertyNotifyEvent->time);
+ }
+ } 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()
diff -rupN qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbconnection.h qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbconnection.h
--- qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbconnection.h 2015-10-13 06:35:27.000000000 +0200
+++ qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbconnection.h 2015-10-21 21:00:21.767613360 +0200
@@ -519,6 +519,9 @@ private:
QXcbVirtualDesktop* virtualDesktopForRootWindow(xcb_window_t rootWindow);
bool checkOutputIsPrimary(xcb_window_t rootWindow, xcb_randr_output_t output);
void initializeScreens();
+ void destroyScreen(QXcbScreen *screen, bool canCreateVirtualScreen);
+ void createVirtualScreen();
+ void maybeSetScreenForTopLevelWindows(QXcbScreen *screen);
void updateScreens(const xcb_randr_notify_event_t *event);
bool m_xi2Enabled;
@@ -583,6 +586,7 @@ private:
QList<QXcbVirtualDesktop *> m_virtualDesktops;
QList<QXcbScreen *> m_screens;
int m_primaryScreenNumber;
+ bool m_onlyVirtualScreen;
xcb_atom_t m_allAtoms[QXcbAtom::NAtoms];
diff -rupN qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbscreen.cpp qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbscreen.cpp
--- qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbscreen.cpp 2015-10-13 06:35:27.000000000 +0200
+++ qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbscreen.cpp 2015-10-21 21:00:21.768613377 +0200
@@ -438,14 +438,6 @@ void QXcbScreen::handleScreenChange(xcb_
QDpi ldpi = logicalDpi();
QWindowSystemInterface::handleScreenLogicalDotsPerInchChange(QPlatformScreen::screen(), ldpi.first, ldpi.second);
-
- // 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(this);
- }
}
void QXcbScreen::updateGeometry(xcb_timestamp_t timestamp)
diff -rupN qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbscreen.h qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbscreen.h
--- qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbscreen.h 2015-10-13 06:35:27.000000000 +0200
+++ qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbscreen.h 2015-10-21 21:00:21.768613377 +0200
@@ -116,6 +116,8 @@ public:
xcb_randr_crtc_t crtc() const { return m_crtc; }
xcb_randr_mode_t mode() const { return m_mode; }
+ void setCrtc(xcb_randr_crtc_t crtc) { m_crtc = crtc; }
+
void windowShown(QXcbWindow *window);
QString windowManagerName() const { return m_windowManagerName; }
bool syncRequestSupported() const { return m_syncRequestSupported; }
diff -rupN qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbwindow.cpp qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbwindow.cpp
--- qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbwindow.cpp 2015-10-13 06:35:27.000000000 +0200
+++ qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbwindow.cpp 2015-10-21 21:01:17.324562601 +0200
@@ -694,12 +694,17 @@ void QXcbWindow::destroy()
m_pendingSyncRequest->invalidate();
}
-void QXcbWindow::maybeSetScreen(QXcbScreen *screen)
+bool QXcbWindow::maybeSetScreen(QXcbScreen *screen)
{
- if (!window()->screen() && screen->geometry().contains(geometry().topLeft())) {
+ // Every window must have a screen. Otherwise application can
+ // crash and the window contents are invisible e.g. in x11vnc.
+ if (!window()->screen()) {
QWindowSystemInterface::handleWindowScreenChanged(window(), static_cast<QPlatformScreen *>(screen)->screen());
- QWindowSystemInterface::handleExposeEvent(window(), QRegion(QRect(QPoint(0, 0), window()->size())));
+ if (screen->geometry().contains(geometry().topLeft()))
+ QWindowSystemInterface::handleExposeEvent(window(), QRegion(QRect(QPoint(0, 0), window()->size())));
+ return true;
}
+ return false;
}
void QXcbWindow::setGeometry(const QRect &rect)
@@ -1243,8 +1248,6 @@ void QXcbWindow::changeNetWmState(bool s
event.data.data32[3] = 0;
event.data.data32[4] = 0;
- if (!xcbScreen())
- return;
Q_XCB_CALL(xcb_send_event(xcb_connection(), 0, xcbScreen()->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
}
@@ -2323,8 +2324,6 @@ void QXcbWindow::handleEnterNotifyEvent(
const int dpr = int(devicePixelRatio());
const QPoint local(event->event_x/dpr, event->event_y/dpr);
- if (!xcbScreen())
- return;
QPoint global = xcbScreen()->mapFromNative(QPoint(event->root_x, event->root_y));
QWindowSystemInterface::handleEnterEvent(window(), local, global);
}
@@ -2343,8 +2342,6 @@ void QXcbWindow::handleLeaveNotifyEvent(
if (enterWindow) {
const int dpr = int(devicePixelRatio());
QPoint local(enter->event_x/dpr, enter->event_y/dpr);
- if (!xcbScreen())
- return;
QPoint global = xcbScreen()->mapFromNative(QPoint(event->root_x, event->root_y));
QWindowSystemInterface::handleEnterLeaveEvent(enterWindow->window(), window(), local, global);
@@ -2360,8 +2357,6 @@ void QXcbWindow::handlePropertyNotifyEve
connection()->setTime(event->time);
const bool propertyDeleted = event->state == XCB_PROPERTY_DELETE;
- if (!xcbScreen())
- return;
if (event->atom == atom(QXcbAtom::_NET_WM_STATE) || event->atom == atom(QXcbAtom::WM_STATE)) {
if (propertyDeleted)
@@ -2403,8 +2398,6 @@ void QXcbWindow::handlePropertyNotifyEve
return;
} else if (event->atom == atom(QXcbAtom::_NET_FRAME_EXTENTS)) {
m_dirtyFrameMargins = true;
- } else if (event->atom == atom(QXcbAtom::_NET_WORKAREA) && xcbScreen() && event->window == xcbScreen()->root()) {
- xcbScreen()->updateGeometry(event->time);
}
}
@@ -2682,8 +2675,6 @@ bool QXcbWindow::needsSync() const
void QXcbWindow::postSyncWindowRequest()
{
- if (!xcbScreen())
- return;
if (!m_pendingSyncRequest) {
QXcbSyncWindowRequest *e = new QXcbSyncWindowRequest(this);
m_pendingSyncRequest = e;
diff -rupN qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbwindow.h qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbwindow.h
--- qtbase-opensource-src-5.5.1/src/plugins/platforms/xcb/qxcbwindow.h 2015-10-13 06:35:27.000000000 +0200
+++ qtbase-opensource-src-5.5.1-new/src/plugins/platforms/xcb/qxcbwindow.h 2015-10-21 21:00:21.769613394 +0200
@@ -158,7 +158,7 @@ public:
virtual void create();
virtual void destroy();
- void maybeSetScreen(QXcbScreen *screen);
+ bool maybeSetScreen(QXcbScreen *screen);
QXcbScreen *screenForNativeGeometry(const QRect &newGeometry) const;
public Q_SLOTS: