Move selection labels to renderer from render items

Creating a new label on demand is fast enough, so we don't need to
store old labels. Storing labels unnecessarily leads to unchecked
use of graphics memory.

Optimized bar slices a bit by having separate class of render items
for slice items.

Change-Id: I5afdecfb3949393341b6c3eaefbc667c65da32e3
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/datavisualization/engine/bars3drenderer_p.h b/src/datavisualization/engine/bars3drenderer_p.h
index 89030b30..37ac2b76 100644
--- a/src/datavisualization/engine/bars3drenderer_p.h
+++ b/src/datavisualization/engine/bars3drenderer_p.h
@@ -60,7 +60,7 @@ private:
 
     // Internal state
     BarRenderItem *m_selectedBar; // points to renderitem array
-    QVector<BarRenderItem *> m_sliceSelection;
+    QVector<BarRenderSliceItem> m_sliceSelection;
     AxisRenderCache *m_sliceCache; // not owned
     const LabelItem *m_sliceTitleItem; // not owned
     bool m_xFlipped;