Merge branch '4.5' of git@scm.dev.nokia.troll.no:qt/qt

5 files changed, 20 insertions, 12 deletions

diff --git a/src/corelib/kernel/qeventdispatcher_glib.cpp b/src/corelib/kernel/qeventdispatcher_glib.cpp
index 3fd768a..3c5b277 100644
--- a/src/corelib/kernel/qeventdispatcher_glib.cpp
+++ b/src/corelib/kernel/qeventdispatcher_glib.cpp
@@ -42,6 +42,7 @@
 #include "qeventdispatcher_glib_p.h"
 #include "qeventdispatcher_unix_p.h"
 
+#include <private/qmutexpool_p.h>
 #include <private/qthread_p.h>
 
 #include "qcoreapplication.h"
@@ -224,6 +225,8 @@ QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(GMainContext *context)
     : mainContext(context)
 {
     if (qgetenv("QT_NO_THREADED_GLIB").isEmpty()) {
+        static int dummyValue = 0; // only used for its address
+        QMutexLocker locker(QMutexPool::instance()->get(&dummyValue));
         if (!g_thread_supported())
             g_thread_init(NULL);
     }
diff --git a/src/corelib/kernel/qeventloop.cpp b/src/corelib/kernel/qeventloop.cpp
index 92bdf73..600f787 100644
--- a/src/corelib/kernel/qeventloop.cpp
+++ b/src/corelib/kernel/qeventloop.cpp
@@ -188,8 +188,9 @@ int QEventLoop::exec(ProcessEventsFlags flags)
     d->threadData->eventLoops.push(this);
 
     // remove posted quit events when entering a new event loop
-    if (qApp->thread() == thread())
-        QCoreApplication::removePostedEvents(qApp, QEvent::Quit);
+    QCoreApplication *app = QCoreApplication::instance();
+    if (app && app->thread() == thread())
+        QCoreApplication::removePostedEvents(app, QEvent::Quit);
 
 #if defined(QT_NO_EXCEPTIONS)
     while (!d->exit)
diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index f602821..8f1c698 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -180,8 +180,7 @@ void *QThreadPrivate::start(void *arg)
     data->quitNow = false;
 
     // ### TODO: allow the user to create a custom event dispatcher
-    if (QCoreApplication::instance())
-        createEventDispatcher(data);
+    createEventDispatcher(data);
 
     emit thr->started();
     pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
diff --git a/src/corelib/thread/qthread_win.cpp b/src/corelib/thread/qthread_win.cpp
index 27193c6..7094e3d 100644
--- a/src/corelib/thread/qthread_win.cpp
+++ b/src/corelib/thread/qthread_win.cpp
@@ -292,8 +292,7 @@ unsigned int __stdcall QThreadPrivate::start(void *arg)
 
     data->quitNow = false;
     // ### TODO: allow the user to create a custom event dispatcher
-    if (QCoreApplication::instance())
-        createEventDispatcher(data);
+    createEventDispatcher(data);
 
 #if !defined(QT_NO_DEBUG) && defined(Q_CC_MSVC) && !defined(Q_OS_WINCE)
     // sets the name of the current thread.
diff --git a/src/gui/kernel/qapplication_x11.cpp b/src/gui/kernel/qapplication_x11.cpp
index 4814f1a..d7ca2f4 100644
--- a/src/gui/kernel/qapplication_x11.cpp
+++ b/src/gui/kernel/qapplication_x11.cpp
@@ -402,7 +402,7 @@ extern bool qt_xdnd_dragging;
 // gui or non-gui from qapplication.cpp
 extern bool qt_is_gui_used;
 
-/*! 
+/*!
     \internal
     Try to resolve a \a symbol from \a library with the version specified
     by \a vernum.
@@ -840,7 +840,7 @@ bool QApplicationPrivate::x11_apply_settings()
     }
 
     int kdeSessionVersion = QString::fromLocal8Bit(qgetenv("KDE_SESSION_VERSION")).toInt();
- 
+
     if (!appFont) {
         QFont font(QApplication::font());
         QString fontDescription;
@@ -1953,11 +1953,17 @@ void qt_init(QApplicationPrivate *priv, int,
         {
             QString displayName = QLatin1String(XDisplayName(NULL));
 
-            // apparently MITSHM only works for local displays, so do a quick check here
-            // to determine whether the display is local or not (not 100 % accurate)
+            // MITSHM only works for local displays, so do a quick check here
+            // to determine whether the display is local or not (not 100 % accurate).
+            // BGR server layouts are not supported either, since it requires the raster
+            // engine to work on a QImage with BGR layout.
             bool local = displayName.isEmpty() || displayName.lastIndexOf(QLatin1Char(':')) == 0;
-            if (local && (qgetenv("QT_X11_NO_MITSHM").toInt() == 0))
-                X11->use_mitshm = mitshm_pixmaps;
+            if (local && (qgetenv("QT_X11_NO_MITSHM").toInt() == 0)) {
+                Visual *defaultVisual = DefaultVisual(X11->display, DefaultScreen(X11->display));
+                X11->use_mitshm = mitshm_pixmaps && (defaultVisual->red_mask == 0xff0000
+                                                     && defaultVisual->green_mask == 0xff00
+                                                     && defaultVisual->blue_mask == 0xff);
+            }
         }
 #endif // QT_NO_MITSHM