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, 2 insertions, 1 deletions

diff --git a/src/datavisualization/engine/drawer_p.h b/src/datavisualization/engine/drawer_p.h
index 54c8111e..8e98aa3a 100644
--- a/src/datavisualization/engine/drawer_p.h
+++ b/src/datavisualization/engine/drawer_p.h
@@ -43,6 +43,7 @@ class AbstractObjectHelper;
 class SurfaceObject;
 class TextureHelper;
 class Q3DCamera;
+class Abstract3DRenderer;
 
 class Drawer : public QObject, public QOpenGLFunctions
 {
@@ -83,7 +84,7 @@ public:
                    LabelPosition position = LabelOver,
                    Qt::AlignmentFlag alignment = Qt::AlignCenter, bool isSlicing = false);
 
-    void generateSelectionLabelTexture(AbstractRenderItem *item);
+    void generateSelectionLabelTexture(Abstract3DRenderer *item);
     void generateLabelItem(LabelItem &item, const QString &text, int widestLabel = 0);
 
 Q_SIGNALS: