Merge remote-tracking branch 'origin/5.6' into 5.7

Conflicts:
	src/plugins/platforms/xcb/qxcbintegration.cpp

Change-Id: I2d71d06a55f730df19ace0dd3304238584a0497f

8 files changed, 59 insertions, 22 deletions

diff --git a/src/plugins/platforms/xcb/gl_integrations/qxcbglintegration.h b/src/plugins/platforms/xcb/gl_integrations/qxcbglintegration.h
index 719d2ace90..926e5e22df 100644
--- a/src/plugins/platforms/xcb/gl_integrations/qxcbglintegration.h
+++ b/src/plugins/platforms/xcb/gl_integrations/qxcbglintegration.h
@@ -60,6 +60,7 @@ public:
     virtual bool initialize(QXcbConnection *connection) = 0;
 
     virtual bool supportsThreadedOpenGL() const { return false; }
+    virtual bool supportsSwitchableWidgetComposition()  const { return true; }
     virtual bool handleXcbEvent(xcb_generic_event_t *event, uint responseType);
 
     virtual QXcbWindow *createWindow(QWindow *window) const = 0;
diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.cpp b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.cpp
index f97c01f390..77cbdd5fba 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.cpp
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.cpp
@@ -224,5 +224,26 @@ bool QXcbGlxIntegration::supportsThreadedOpenGL() const
     return QGLXContext::supportsThreading();
 }
 
+bool QXcbGlxIntegration::supportsSwitchableWidgetComposition() const
+{
+    static bool vendorChecked = false;
+    static bool isSwitchableWidgetCompositionAvailable = true;
+    if (!vendorChecked) {
+        vendorChecked = true;
+        Display *display = glXGetCurrentDisplay();
+#ifdef XCB_USE_XLIB
+        if (!display)
+            display = static_cast<Display *>(m_connection->xlib_display());
+#endif
+        const char *glxvendor = glXGetClientString(display, GLX_VENDOR);
+        if (glxvendor) {
+            if (!strcmp(glxvendor, "Parallels Inc"))
+                isSwitchableWidgetCompositionAvailable = false;
+        }
+    }
+
+    return isSwitchableWidgetCompositionAvailable;
+}
+
 
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.h b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.h
index 77d3bc55e1..8f04db31b2 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.h
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qxcbglxintegration.h
@@ -60,6 +60,7 @@ public:
     QPlatformOffscreenSurface *createPlatformOffscreenSurface(QOffscreenSurface *surface) const Q_DECL_OVERRIDE;
 
     virtual bool supportsThreadedOpenGL() const Q_DECL_OVERRIDE;
+    virtual bool supportsSwitchableWidgetComposition() const Q_DECL_OVERRIDE;
 
 private:
     QXcbConnection *m_connection;
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index fded4de76a..05107932f9 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -107,6 +107,7 @@ QT_BEGIN_NAMESPACE
 
 Q_LOGGING_CATEGORY(lcQpaXInput, "qt.qpa.input")
 Q_LOGGING_CATEGORY(lcQpaXInputDevices, "qt.qpa.input.devices")
+Q_LOGGING_CATEGORY(lcQpaXInputEvents, "qt.qpa.input.events")
 Q_LOGGING_CATEGORY(lcQpaScreen, "qt.qpa.screen")
 
 // this event type was added in libxcb 1.10,
@@ -1119,7 +1120,8 @@ void QXcbConnection::handleXcbEvent(xcb_generic_event_t *event)
             // the rest we need to manage ourselves
             m_buttons = (m_buttons & ~0x7) | translateMouseButtons(ev->state);
             m_buttons |= translateMouseButton(ev->detail);
-            qCDebug(lcQpaXInput, "legacy mouse press, button %d state %X", ev->detail, static_cast<unsigned int>(m_buttons));
+            if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+                qCDebug(lcQpaXInputEvents, "legacy mouse press, button %d state %X", ev->detail, static_cast<unsigned int>(m_buttons));
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_button_press_event_t, event, handleButtonPressEvent);
         }
         case XCB_BUTTON_RELEASE: {
@@ -1127,15 +1129,17 @@ void QXcbConnection::handleXcbEvent(xcb_generic_event_t *event)
             m_keyboard->updateXKBStateFromCore(ev->state);
             m_buttons = (m_buttons & ~0x7) | translateMouseButtons(ev->state);
             m_buttons &= ~translateMouseButton(ev->detail);
-            qCDebug(lcQpaXInput, "legacy mouse release, button %d state %X", ev->detail, static_cast<unsigned int>(m_buttons));
+            if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+                qCDebug(lcQpaXInputEvents, "legacy mouse release, button %d state %X", ev->detail, static_cast<unsigned int>(m_buttons));
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_button_release_event_t, event, handleButtonReleaseEvent);
         }
         case XCB_MOTION_NOTIFY: {
             xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
             m_keyboard->updateXKBStateFromCore(ev->state);
             m_buttons = (m_buttons & ~0x7) | translateMouseButtons(ev->state);
-            qCDebug(lcQpaXInput, "legacy mouse move %d,%d button %d state %X", ev->event_x, ev->event_y,
-                    ev->detail, static_cast<unsigned int>(m_buttons));
+            if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+                qCDebug(lcQpaXInputEvents, "legacy mouse move %d,%d button %d state %X", ev->event_x, ev->event_y,
+                        ev->detail, static_cast<unsigned int>(m_buttons));
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_motion_notify_event_t, event, handleMotionNotifyEvent);
         }
 
diff --git a/src/plugins/platforms/xcb/qxcbconnection.h b/src/plugins/platforms/xcb/qxcbconnection.h
index 891f0fbcb5..ebea8d5460 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.h
+++ b/src/plugins/platforms/xcb/qxcbconnection.h
@@ -85,6 +85,7 @@ QT_BEGIN_NAMESPACE
 
 Q_DECLARE_LOGGING_CATEGORY(lcQpaXInput)
 Q_DECLARE_LOGGING_CATEGORY(lcQpaXInputDevices)
+Q_DECLARE_LOGGING_CATEGORY(lcQpaXInputEvents)
 Q_DECLARE_LOGGING_CATEGORY(lcQpaScreen)
 
 class QXcbVirtualDesktop;
diff --git a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
index 5b7f45fb6c..f2824b6d65 100644
--- a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
@@ -562,8 +562,8 @@ void QXcbConnection::xi2HandleEvent(xcb_ge_event_t *event)
         case XI_TouchBegin:
         case XI_TouchUpdate:
         case XI_TouchEnd:
-            if (Q_UNLIKELY(lcQpaXInput().isDebugEnabled()))
-                qCDebug(lcQpaXInput, "XI2 touch event type %d seq %d detail %d pos %6.1f, %6.1f root pos %6.1f, %6.1f on window %x",
+            if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+                qCDebug(lcQpaXInputEvents, "XI2 touch event type %d seq %d detail %d pos %6.1f, %6.1f root pos %6.1f, %6.1f on window %x",
                         event->event_type, xiDeviceEvent->sequenceNumber, xiDeviceEvent->detail,
                         fixed1616ToReal(xiDeviceEvent->event_x), fixed1616ToReal(xiDeviceEvent->event_y),
                         fixed1616ToReal(xiDeviceEvent->root_x), fixed1616ToReal(xiDeviceEvent->root_y),xiDeviceEvent->event);
@@ -620,8 +620,8 @@ void QXcbConnection::xi2ProcessTouch(void *xiDevEvent, QXcbWindow *platformWindo
             double value;
             if (!xi2GetValuatorValueIfSet(xiDeviceEvent, n, &value))
                 continue;
-            if (Q_UNLIKELY(lcQpaXInput().isDebugEnabled()))
-                qCDebug(lcQpaXInput, "   valuator %20s value %lf from range %lf -> %lf",
+            if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+                qCDebug(lcQpaXInputEvents, "   valuator %20s value %lf from range %lf -> %lf",
                         atomName(vci->label).constData(), value, vci->min, vci->max );
             if (vci->label == atom(QXcbAtom::RelX)) {
                 nx = valuatorNormalized(value, vci);
@@ -748,8 +748,8 @@ void QXcbConnection::xi2ProcessTouch(void *xiDevEvent, QXcbWindow *platformWindo
     touchPoint.area = QRectF(x - w/2, y - h/2, w, h);
     touchPoint.normalPosition = QPointF(nx, ny);
 
-    if (Q_UNLIKELY(lcQpaXInput().isDebugEnabled()))
-        qCDebug(lcQpaXInput) << "   touchpoint "  << touchPoint.id << " state " << touchPoint.state << " pos norm " << touchPoint.normalPosition <<
+    if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+        qCDebug(lcQpaXInputEvents) << "   touchpoint "  << touchPoint.id << " state " << touchPoint.state << " pos norm " << touchPoint.normalPosition <<
             " area " << touchPoint.area << " pressure " << touchPoint.pressure;
     QWindowSystemInterface::handleTouchEvent(platformWindow->window(), xiDeviceEvent->time, dev->qtTouchDevice, dev->touchPoints.values());
     if (touchPoint.state == Qt::TouchPointReleased)
@@ -880,8 +880,8 @@ void QXcbConnection::updateScrollingDevice(ScrollingDevice &scrollingDevice, int
                 scrollingDevice.lastScrollPosition.setY(vci->value);
         }
     }
-    if (lcQpaXInput().isDebugEnabled() && lastScrollPosition != scrollingDevice.lastScrollPosition)
-        qCDebug(lcQpaXInput, "scrolling device %d moved from (%f, %f) to (%f, %f)", scrollingDevice.deviceId,
+    if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled() && lastScrollPosition != scrollingDevice.lastScrollPosition))
+        qCDebug(lcQpaXInputEvents, "scrolling device %d moved from (%f, %f) to (%f, %f)", scrollingDevice.deviceId,
                 lastScrollPosition.x(), lastScrollPosition.y(),
                 scrollingDevice.lastScrollPosition.x(),
                 scrollingDevice.lastScrollPosition.y());
@@ -1114,9 +1114,10 @@ bool QXcbConnection::xi2HandleTabletEvent(const void *event, TabletData *tabletD
                         }
                         // TODO maybe have a hash of tabletData->deviceId to device data so we can
                         // look up the tablet name here, and distinguish multiple tablets
-                        qCDebug(lcQpaXInput, "XI2 proximity change on tablet %d (USB %x): last tool: %x id %x current tool: %x id %x TabletDevice %d",
-                            tabletData->deviceId, ptr[_WACSER_USB_ID], ptr[_WACSER_LAST_TOOL_SERIAL], ptr[_WACSER_LAST_TOOL_ID],
-                            ptr[_WACSER_TOOL_SERIAL], ptr[_WACSER_TOOL_ID], tabletData->tool);
+                        if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+                            qCDebug(lcQpaXInputEvents, "XI2 proximity change on tablet %d (USB %x): last tool: %x id %x current tool: %x id %x TabletDevice %d",
+                                    tabletData->deviceId, ptr[_WACSER_USB_ID], ptr[_WACSER_LAST_TOOL_SERIAL], ptr[_WACSER_LAST_TOOL_ID],
+                                    ptr[_WACSER_TOOL_SERIAL], ptr[_WACSER_TOOL_ID], tabletData->tool);
                     }
                     XFree(data);
                 }
@@ -1178,8 +1179,8 @@ void QXcbConnection::xi2ReportTabletEvent(const void *event, TabletData *tabletD
         }
     }
 
-    if (Q_UNLIKELY(lcQpaXInput().isDebugEnabled()))
-        qCDebug(lcQpaXInput, "XI2 event on tablet %d with tool %d type %d seq %d detail %d time %d "
+    if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+        qCDebug(lcQpaXInputEvents, "XI2 event on tablet %d with tool %d type %d seq %d detail %d time %d "
             "pos %6.1f, %6.1f root pos %6.1f, %6.1f buttons 0x%x pressure %4.2lf tilt %d, %d rotation %6.2lf",
             tabletData->deviceId, tabletData->tool, ev->evtype, ev->sequenceNumber, ev->detail, ev->time,
             fixed1616ToReal(ev->event_x), fixed1616ToReal(ev->event_y),
diff --git a/src/plugins/platforms/xcb/qxcbintegration.cpp b/src/plugins/platforms/xcb/qxcbintegration.cpp
index 5a89113a4f..802f7b85ce 100644
--- a/src/plugins/platforms/xcb/qxcbintegration.cpp
+++ b/src/plugins/platforms/xcb/qxcbintegration.cpp
@@ -267,9 +267,14 @@ bool QXcbIntegration::hasCapability(QPlatformIntegration::Capability cap) const
     case ForeignWindows:
     case SyncState:
     case RasterGLSurface:
-    case SwitchableWidgetComposition:
         return true;
 
+    case SwitchableWidgetComposition:
+    {
+        return m_connections.at(0)->glIntegration()
+            && m_connections.at(0)->glIntegration()->supportsSwitchableWidgetComposition();
+    }
+
     default: return QPlatformIntegration::hasCapability(cap);
     }
 }
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 54c93bea39..a39ff01afd 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -2413,7 +2413,7 @@ void QXcbWindow::handleXIMouseEvent(xcb_ge_event_t *event, Qt::MouseEventSource
     }
 
     const char *sourceName = 0;
-    if (lcQpaXInput().isDebugEnabled()) {
+    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);
@@ -2421,17 +2421,20 @@ void QXcbWindow::handleXIMouseEvent(xcb_ge_event_t *event, Qt::MouseEventSource
 
     switch (ev->evtype) {
     case XI_ButtonPress:
-        qCDebug(lcQpaXInput, "XI2 mouse press, button %d, time %d, source %s", button, ev->time, sourceName);
+        if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+            qCDebug(lcQpaXInputEvents, "XI2 mouse press, button %d, time %d, source %s", button, ev->time, sourceName);
         conn->setButton(button, true);
         handleButtonPressEvent(event_x, event_y, root_x, root_y, ev->detail, modifiers, ev->time, source);
         break;
     case XI_ButtonRelease:
-        qCDebug(lcQpaXInput, "XI2 mouse release, button %d, time %d, source %s", button, ev->time, sourceName);
+        if (Q_UNLIKELY(lcQpaXInputEvents().isDebugEnabled()))
+            qCDebug(lcQpaXInputEvents, "XI2 mouse release, button %d, time %d, source %s", button, ev->time, sourceName);
         conn->setButton(button, false);
         handleButtonReleaseEvent(event_x, event_y, root_x, root_y, ev->detail, modifiers, ev->time, source);
         break;
     case XI_Motion:
-        qCDebug(lcQpaXInput, "XI2 mouse motion %d,%d, time %d, source %s", event_x, event_y, ev->time, sourceName);
+        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, source);
         break;
     default: