1 files changed, 98 insertions, 0 deletions
diff --git a/extra/qt/improved-filter-event.patch b/extra/qt/improved-filter-event.patch
new file mode 100644
index 000000000..b03cdbe94
--- /dev/null
+++ b/extra/qt/improved-filter-event.patch
@@ -0,0 +1,98 @@
+--- qt-opensource-4.8.0.old/src/gui/kernel/qapplication_x11.cpp	2011-12-16 03:22:33.918428374 -0500
++++ qt-opensource-4.8.0.new/src/gui/kernel/qapplication_x11.cpp	2012-01-07 18:18:40.258246384 -0500
+@@ -4244,7 +4205,12 @@ bool QETWidget::translateMouseEvent(cons
+                     && (nextEvent.xclient.message_type == ATOM(_QT_SCROLL_DONE) ||
+                     (nextEvent.xclient.message_type == ATOM(WM_PROTOCOLS) &&
+                      (Atom)nextEvent.xclient.data.l[0] == ATOM(_NET_WM_SYNC_REQUEST))))) {
+-                qApp->x11ProcessEvent(&nextEvent);
++                // As we may run through a significant number of a large class of non-MotionNotify
++                // events here, without returning to the event loop, first pass nextEvent to
++                // QAbstractEventDispatcher::filterEvent() to allow applications which override
++                // QAbstractEventDispatcher::filterEvent() to handle the event first.
++                if (!QAbstractEventDispatcher::instance()->filterEvent(&nextEvent))
++                    qApp->x11ProcessEvent(&nextEvent);
+                 continue;
+             } else if (nextEvent.type != MotionNotify ||
+                        nextEvent.xmotion.window != event->xmotion.window ||
+--- qt-opensource-4.8.0.old/src/gui/kernel/qclipboard_x11.cpp	2011-12-08 00:06:02.000000000 -0500
++++ qt-opensource-4.8.0.new/src/gui/kernel/qclipboard_x11.cpp	2012-01-07 18:30:35.298287639 -0500
+@@ -573,7 +573,11 @@ bool QX11Data::clipboardWaitForEvent(Win
+ 
+             // process other clipboard events, since someone is probably requesting data from us
+             XEvent e;
+-            if (XCheckIfEvent(X11->display, &e, checkForClipboardEvents, 0))
++            // Some applications may override QAbstractEventDispatcher::filterEvent(), so
++            // pass event to QAbstractEventDispatcher::filterEvent() before processing in
++            // x11ProcessEvent().
++            if (XCheckIfEvent(X11->display, &e, checkForClipboardEvents, 0) && 
++                !QAbstractEventDispatcher::instance()->filterEvent(&e))
+                 qApp->x11ProcessEvent(&e);
+ 
+             now.start();
+--- qt-opensource-4.8.0.old/src/gui/kernel/qdnd_x11.cpp	2011-12-08 00:06:02.000000000 -0500
++++ qt-opensource-4.8.0.new/src/gui/kernel/qdnd_x11.cpp	2012-01-07 18:28:13.841279478 -0500
+@@ -42,6 +42,7 @@
+ #include "qplatformdefs.h"
+ 
+ #include "qapplication.h"
++#include "qabstracteventdispatcher.h"
+ 
+ #ifndef QT_NO_DRAGANDDROP
+ 
+@@ -1941,7 +1942,11 @@ Qt::DropAction QDragManager::drag(QDrag
+         timer.start();
+         do {
+             XEvent event;
+-            if (XCheckTypedEvent(X11->display, ClientMessage, &event))
++            // Some applications may override QAbstractEventDispatcher::filterEvent(), so
++            // pass event to QAbstractEventDispatcher::filterEvent() before processing in
++            // x11ProcessEvent().
++            if (XCheckTypedEvent(X11->display, ClientMessage, &event) &&
++                !QAbstractEventDispatcher::instance()->filterEvent(&event))
+                 qApp->x11ProcessEvent(&event);
+ 
+             // sleep 50 ms, so we don't use up CPU cycles all the time.
+--- qt-opensource-4.8.0.old/src/gui/kernel/qwidget_x11.cpp	2011-12-08 00:06:02.000000000 -0500
++++ qt-opensource-4.8.0.new/src/gui/kernel/qwidget_x11.cpp	2012-01-07 18:29:26.286283657 -0500
+@@ -44,6 +44,7 @@
+ #include "qdesktopwidget.h"
+ #include "qapplication.h"
+ #include "qapplication_p.h"
++#include "qabstracteventdispatcher.h"
+ #include "qnamespace.h"
+ #include "qpainter.h"
+ #include "qbitmap.h"
+@@ -376,17 +377,22 @@ void qt_x11_wait_for_window_manager(QWid
+     do {
+         if (XEventsQueued(X11->display, QueuedAlready)) {
+             XNextEvent(X11->display, &ev);
+-            qApp->x11ProcessEvent(&ev);
+-
+-            switch (state) {
+-            case Initial:
+-                if (ev.type == MapNotify && ev.xany.window == winid)
+-                    state = Mapped;
+-                break;
+-            case Mapped:
+-                if (ev.type == Expose && ev.xany.window == winid)
+-                    return;
+-                break;
++            // Some applications may override QAbstractEventDispatcher::filterEvent(), so
++            // pass event to QAbstractEventDispatcher::filterEvent() before processing in
++            // x11ProcessEvent().
++            if (!QAbstractEventDispatcher::instance()->filterEvent(&ev)) {
++                qApp->x11ProcessEvent(&ev);
++
++                switch (state) {
++                case Initial:
++                    if (ev.type == MapNotify && ev.xany.window == winid)
++                        state = Mapped;
++                    break;
++                case Mapped:
++                    if (ev.type == Expose && ev.xany.window == winid)
++                        return;
++                    break;
++                }
+             }
+         } else {
+             if (!XEventsQueued(X11->display, QueuedAfterFlush))