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# ARandR -- Another XRandR GUI
# Copyright (C) 2008 -- 2011 chrysn <chrysn@fsfe.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from .auxiliary import Position
class Snap:
"""Snap-to-edges manager"""
def __init__(self, size, tolerance, positions):
self.tolerance = tolerance
self.horizontal = set()
self.vertical = set()
for i in positions:
self.vertical.add(i[0].left)
self.vertical.add(i[0].left + i[1].width)
self.horizontal.add(i[0].top)
self.horizontal.add(i[0].top + i[1].height)
self.vertical.add(i[0].left - size.width)
self.vertical.add(i[0].left + i[1].width - size.width)
self.horizontal.add(i[0].top - size.height)
self.horizontal.add(i[0].top + i[1].height - size.height)
self.vertical.add((i[0].left + i[1].width / 2) - size.width / 2)
self.horizontal.add((i[0].top + i[1].height / 2) - size.height / 2)
def suggest(self, position):
vertical = [x for x in self.vertical if abs(
x - position[0]) < self.tolerance]
horizontal = [y for y in self.horizontal if abs(
y - position[1]) < self.tolerance]
if vertical:
position = Position((vertical[0], position[1]))
if horizontal:
position = Position((position[0], horizontal[0]))
return position
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