Hob: add fadeout display effection for package view include page

[YOCTO #2100]

(Bitbake rev: c0c81647dc5e72fe3abb1fb3b65a978aa4b226a5)

Signed-off-by: Liming An <limingx.l.an@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/bitbake/lib/bb/ui/crumbs/hobwidget.py b/bitbake/lib/bb/ui/crumbs/hobwidget.py
index c6e3bb1ae6..8c8bf9bc77 100644
--- a/bitbake/lib/bb/ui/crumbs/hobwidget.py
+++ b/bitbake/lib/bb/ui/crumbs/hobwidget.py
@@ -1072,7 +1072,11 @@ class HobCellRendererToggle(gtk.CellRendererToggle):
         if (not self.ctrl) or (not widget):
             return
         if self.ctrl.is_active():
-            path = widget.get_path_at_pos(cell_area.x + cell_area.width/2, cell_area.y + cell_area.height/2)[0]
+            path = widget.get_path_at_pos(cell_area.x + cell_area.width/2, cell_area.y + cell_area.height/2)
+            # sometimes the parameters of cell_area will be a negative number,such as pull up down the scroll bar
+            # it's over the tree container range, so the path will be bad
+            if not path: return
+            path = path[0]
             if path in self.ctrl.running_cell_areas:
                 cr = window.cairo_create()
                 color = gtk.gdk.Color(HobColors.WHITE)