Cocoa/Alien: fix qgraphicseffectsource autotest

The test discovered a serious bug where we for alien widgets on mac
returned a zero sized paintdevice. The reason is that we used to
ask the nsview backing the widget for its size, but with alien, there
where no such view. Very strange that this was not seen visually for
any of the many applications tested. This patch does the same
implementation strategy as found in QWidget::metric in qwidget_x11.cpp

1 files changed, 8 insertions, 5 deletions

diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index 1a1bb6e..3ba12cd 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -4858,16 +4858,19 @@ int QWidget::metric(PaintDeviceMetric m) const
     case PdmWidthMM:
         return qRound(metric(PdmWidth) * 25.4 / qreal(metric(PdmDpiX)));
     case PdmHeight:
-    case PdmWidth: {
+    case PdmWidth:
 #ifndef QT_MAC_USE_COCOA
-        HIRect rect;
+        { HIRect rect;
         HIViewGetFrame(qt_mac_nativeview_for(this), &rect);
-#else
-        NSRect rect = [qt_mac_nativeview_for(this) frame];
-#endif
         if(m == PdmWidth)
             return (int)rect.size.width;
         return (int)rect.size.height; }
+#else
+        if (m == PdmWidth)
+            return data->crect.width();
+        else
+            return data->crect.height();
+#endif
     case PdmDepth:
         return 32;
     case PdmNumColors: