def connection_add(self, col1, row1, col2, row2):
# print ("CONNECTION", col1, row1, col2, row2)
if col1 == col2:
# a stright line
l = Edje(self.evas, file=self.themef, size_hint_align=FILL_BOTH,
group='egitu/graph/connection/vert',
color=self.color_for_column(col1))
self.pack(l, col1, row1, col2 - col1 + 1, row2 - row1 + 1)
elif col1 > col2:
# a "fork"
l = Edje(self.evas, file=self.themef, size_hint_align=FILL_BOTH,
group='egitu/graph/connection/vert_fork',
color=self.color_for_column(col1))
self.pack(l, col2, row1, col1 - col2 + 1, row2 - row1 + 1)
else:
# a "merge"
l = Edje(self.evas, file=self.themef, size_hint_align=FILL_BOTH,
group='egitu/graph/connection/vert_merge',
color=self.color_for_column(col2))
self.pack(l, col1, row1, col2 - col1 + 1, row2 - row1 + 1)
l.lower()
l.show()
return l
