SVN commit 1181414 by jsimon:

Backport r1181413 from trunk:

Somehow a QPixmap on Mac OS doesn't support alpha blending


 M  +9 -2      kfileitemdelegate.cpp  


--- branches/KDE/4.5/kdelibs/kio/kio/kfileitemdelegate.cpp #1181413:1181414
@@ -597,9 +597,16 @@
     QColor color;
     color.setAlphaF(amount);
 
+// FIXME: Somehow this doesn't work on Mac OS..
+#if defined(Q_OS_MAC)
+    const bool usePixmap = false;
+#else
+    const bool usePixmap = from.paintEngine()->hasFeature(QPaintEngine::PorterDuff) &&
+                           from.paintEngine()->hasFeature(QPaintEngine::BlendModes);
+#endif
+
     // If the native paint engine supports Porter/Duff compositing and CompositionMode_Plus
-    if (from.paintEngine()->hasFeature(QPaintEngine::PorterDuff) &&
-        from.paintEngine()->hasFeature(QPaintEngine::BlendModes))
+    if (usePixmap)
     {
         QPixmap under = from;
         QPixmap over  = to;