Add WA_MacNoShadow widget attribute

Task-number: QTBUG-6831
Reviewed-by: Fabien Freling <fabien.freling@nokia.com>

3 files changed, 9 insertions, 1 deletions

diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
index 3ed6291..6afc9a2 100644
--- a/src/corelib/global/qnamespace.h
+++ b/src/corelib/global/qnamespace.h
@@ -519,6 +519,8 @@ public:
 
         WA_X11DoNotAcceptFocus = 132,
 
+        WA_MacNoShadow = 133,
+
         // Add new attributes before this line
         WA_AttributeCount
     };
diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index f097f2a..b9939b6 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -1257,6 +1257,9 @@
     to this top level window. This attribute has no effect on non-X11
     platforms.
 
+    \value WA_MacNoShadow Since Qt 4.8, this attribute disables drop shadows
+    for this top level window. Only affects Cocoa builds of Qt for Mac OS X.
+
     \omitvalue WA_SetLayoutDirection
     \omitvalue WA_InputMethodTransparent
     \omitvalue WA_WState_CompressKeys
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index 882f03b..bcddae5 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -2294,7 +2294,10 @@ void QWidgetPrivate::finishCreateWindow_sys_Cocoa(void * /*NSWindow * */ voidWin
     } else {
         [windowRef setHidesOnDeactivate:NO];
     }
-    [windowRef setHasShadow:YES];
+    if (q->testAttribute(Qt::WA_MacNoShadow))
+        [windowRef setHasShadow:NO];
+    else
+        [windowRef setHasShadow:YES];
     Q_UNUSED(parentWidget);
     Q_UNUSED(dialog);