dag: clearify y coordinate offset sign
commitc2cd763f5f6d849e7d486624a03b053c49b744ba
authorEfimov Vasily <real@ispras.ru>
Fri, 20 Jan 2017 16:07:41 +0000 (20 19:07 +0300)
committerEfimov Vasily <real@ispras.ru>
Wed, 25 Jan 2017 17:17:07 +0000 (25 20:17 +0300)
tree2556b88f7ee7cdbf0676245896c9147eff4bfcf2
parent83999ee110b69c65e8bf1f993d12193e74a42c1c
dag: clearify y coordinate offset sign

The graph grows in negative y direction. So, y offset should be negative
preventing layout algorithm misunderstanding.

Signed-off-by: Efimov Vasily <real@ispras.ru>
cola/widgets/dag.py