7710: Fix crash in fan chart view when scrolling

2014-05-17 01:03:52 +01:00 · 2014-05-17 01:03:52 +01:00 · a055aaba8a
commit a055aaba8a
parent 545e7702e7
1 changed files with 3 additions and 0 deletions
--- a/gramps/gui/widgets/fanchart.py
+++ b/gramps/gui/widgets/fanchart.py
@ -662,6 +662,9 @@ class FanChartBaseWidget(Gtk.DrawingArea):
        PangoCairo.layout_path(cr, layout)
        #le = layout.get_line(0).get_pixel_extents()[0]
        pe = cr.path_extents()
+        if pe == (0.0, 0.0, 0.0, 0.0):
+            # 7710: When scrolling the path extents are zero on Ubuntu 14.04
+            return
        arc_used_ratio = w / (radius * rad_spread)
        rad_mid = math.radians(pos) + rad_spread/2