Disable QGV BSP item indexing for the FlameGraph scene.

The data changes frequently and this would be slow when we use the BSP.

diff --git a/gui/flamegraph.cpp b/gui/flamegraph.cpp
index a3a899c..8e2dc52 100644 (file)
--- a/gui/flamegraph.cpp
+++ b/gui/flamegraph.cpp
@@ -196,6 +196,7 @@ FlameGraph::FlameGraph(QWidget* parent, Qt::WindowFlags flags)
 {
     setLayout(new QVBoxLayout);
 
+    m_scene->setItemIndexMethod(QGraphicsScene::NoIndex);
     m_view->setScene(m_scene);
     m_view->viewport()->installEventFilter(this);
     // prevent duplicate resize, when a scrollbar is shown for the first time