Introduce QGraphicsItem::ItemHasNoContents.

This flag helps optimize the case where an item is used only as a
transformation node in a scene graph, and where the item itself
doesn't paint anything. This is the default for FxItem (the
subclasses that do paint enable the HasContents flag). This lets
Graphics View know whether there's any point in setting up the
world transform, opacity and other things.

Reviewed-by: Lars

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gui/graphicsview/qgraphicsitem_p.h b/src/gui/graphicsview/qgraphicsitem_p.h
index acd2fcc..9d5b58a 100644
--- a/src/gui/graphicsview/qgraphicsitem_p.h
+++ b/src/gui/graphicsview/qgraphicsitem_p.h
@@ -350,11 +350,11 @@ public:
     quint32 unused : 3;
 
     // New 32 bits
-    quint32 flags : 10;
+    quint32 flags : 11;
     quint32 dirtyChildrenBoundingRect : 1;
     quint32 inDirtyList : 1;
     quint32 paintedViewBoundingRectsNeedRepaint : 1;
-    quint32 padding : 19; // feel free to use
+    quint32 padding : 18; // feel free to use
 
     // Optional stacking order
     int globalStackingOrder;