statistics/legend: fix dragging legend on touch screen

While this didn't appear to be needed when dragging the legend with a
mouse, on a touch screen for some reason the drag ended after 30 pixels
either way horizontally (but no apparent limit vertically). By setting
this flag to true, drags on a tablet appear to work as expected.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/stats/statsview.cpp b/stats/statsview.cpp
index feb5a276e..6560360cc 100644
--- a/stats/statsview.cpp
+++ b/stats/statsview.cpp
@@ -68,6 +68,7 @@ void StatsView::mousePressEvent(QMouseEvent *event)
 			dragStartItem = rect.topLeft();
 			draggedItem = &*legend;
 			grabMouse();
+			setKeepMouseGrab(true); // don't allow Qt to steal the grab
 		}
 	}
 }