statistics: highlight selected pie slices

In analogy to the other charts, highlight selected pie slices.
Overlay them with a checkerboard pattern, like in the bar charts.

Since all charts now support highlighting, the divesSelected()
virtual function now doesn't need a default implementation
anymore.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 1 insertions, 1 deletions

diff --git a/stats/chartitem.h b/stats/chartitem.h
index ca04d6afd..598e854bc 100644
--- a/stats/chartitem.h
+++ b/stats/chartitem.h
@@ -107,7 +107,7 @@ private:
 class ChartPieItem : public ChartPixmapItem {
 public:
 	ChartPieItem(StatsView &v, ChartZValue z, double borderWidth);
-	void drawSegment(double from, double to, QColor fill, QColor border); // from and to are relative (0-1 is full disk).
+	void drawSegment(double from, double to, QColor fill, QColor border, bool selected); // from and to are relative (0-1 is full disk).
 	void resize(QSizeF size);	// As in base class, but clears the canvas
 private:
 	double borderWidth;