def _merge_region_changes(self, y, merge):
"""Handle changes caused by one or more regions being merged into one."""
built = []
once = False
for change in merge:
old = change['old']
new = change['new']
below = new[0]
collect = []
if old[0].left == below.left and old[-1].right == below.right:
for above in old:
collect += above.zones
self._regions.remove(above)
zone = data.Zone(left=below.left,
right=below.right,
top=y,
maybe_left=old[0].right,
maybe_right=old[-1].left)
collect.append(zone)
else:
for above in old:
if below.left < above.left and below.right == above.right:
zone = data.Zone(left=below.left,
right=below.right,
top=y,
maybe_right=above.left)
self._insert_into(zone, collect)
elif below.left == above.left and below.right > above.right:
zone = data.Zone(left=below.left,
right=below.right,
top=y,
maybe_left=above.right)
self._insert_into(zone, collect)
elif below.left == above.left and below.right < above.right:
built += self._finish_zones_on_the_right(
y, above, below.right)
elif below.left > above.left and below.right == above.right:
built += self._finish_zones_on_the_left(
y, above, below.left)
elif below.left < above.left and below.right < above.right:
built += self._cull_static_zones(y, above)
elif below.left > above.left and below.right > above.right:
built += self._cull_static_zones(y, above)
else:
raise RuntimeError('TODO unknown above=%r below=%r' %
(above, below))
collect += above.zones
self._regions.remove(above)
region = data.Region(below.left, below.right)
region.zones = collect
self._insert_into(region, self._regions)
return built
def test_edge_smaller_on_left_but_same_on_right(self):
# |..rrrrrr......|
# |....eeee......|
self.add_region(top=3, left=40, right=56)
self.set_zones(0, [
data.Zone(left=40, right=52, top=1),
data.Zone(left=40, right=56, top=3, maybe_left=52)
])
self.assertEqual(self.regions(), '[<Region L=40 R=56>]')
self.assertEqual(
self.zones(), '[<Zone L=40 R=52 T=1>,'
' <Zone L=[40, 52] R=56 T=3>]')
self.insert_span(y=6, left=44, right=56)
self.assertEqual(self.regions(), '[<Region L=44 R=56>]')
self.assertEqual(self.zones(), '[<Zone L=[44, 52] R=56 T=3>]')
self.assertEqual(self.built(), '[<Zone L=40 R=52 T=1 B=6>]')
def test_edge_same_on_left_but_smaller_on_right(self):
# |..rrrrrr......|
# |..eeee........|
self.add_region(top=3, left=40, right=54)
self.set_zones(0, [
data.Zone(left=46, right=54, top=1),
data.Zone(left=40, right=54, top=3, maybe_right=46)
])
self.assertEqual(self.regions(), '[<Region L=40 R=54>]')
self.assertEqual(
self.zones(), '[<Zone L=46 R=54 T=1>,'
' <Zone L=40 R=[46, 54] T=3>]')
self.insert_span(y=6, left=40, right=48)
self.assertEqual(self.regions(), '[<Region L=40 R=48>]')
self.assertEqual(self.zones(), '[<Zone L=40 R=[46, 48] T=3>]')
self.assertEqual(self.built(), '[<Zone L=46 R=54 T=1 B=6>]')
def _add_zones_to_empty_regions(self, y):
"""Regions without zones have a single zone added."""
for r in self._regions:
if r.zones == []:
r.zones.append(data.Zone(left=r.left, right=r.right, top=y))
def add_region(self, top, left, right):
region = data.Region(left=left, right=right)
region.zones.append(data.Zone(left=left, right=right, top=top))
self.processor._regions.append(region)