Update PieLayout.java

Frameworks: Fix do not show snappoints if triggermask disables edge

as the title says do not show on lockscreen or notification
drawer the snappoints on the disabled edges. Pass
trigger slots and mask trough and take into account
PatchSet 2:
- some refactoring
Change-Id: I0413ffe86169c5d1cb906598d6006bbf1463770b