Reuse the entry tooltip item and do fewer calls for each mouse move

While analizing the code for the mouse movement I've discovered that
we did a lot of uneeded things: Set the color, the pen, the size
of a fixed-colored line, twice.

We also deleted-newed the same Pixmap / Text for every mouse movement
so now we reuse the 'entryToolTip' that consists of a huge line and
a pixmap, and after that we add the other tooltips that are not static

Also, reduced a lot the number of calls to expand() (that did a lot of
math).

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/qt-ui/profile/divetooltipitem.h b/qt-ui/profile/divetooltipitem.h
index bb3ad84d3..ca5bc8905 100644
--- a/qt-ui/profile/divetooltipitem.h
+++ b/qt-ui/profile/divetooltipitem.h
@@ -50,6 +50,7 @@ slots:
 private:
 	typedef QPair<QGraphicsPixmapItem *, QGraphicsSimpleTextItem *> ToolTip;
 	QVector<ToolTip> toolTips;
+	ToolTip entryToolTip;
 	QGraphicsPathItem *background;
 	QGraphicsLineItem *separator;
 	QGraphicsSimpleTextItem *title;