def __onCopyLut(self, ev):
"""Called when the user presses the *Copy LUT* button.
Prompts the user to enter a name (via :func:`promptForLutName`), and
then creates and registers a new :class:`.LookupTable` instance which
is initialised with the same labels as the previously selected
``LookupTable``. Updates this ``LookupTablePanel`` via the
:meth:`__updateLutChoices` and :meth:`__setLut` methods.
"""
oldKey = self.__selectedLut.key
oldName = self.__selectedLut.name
newKey, newName = promptForLutName('{} copy'.format(oldName))
if newKey is None:
return
log.debug('Creating and registering new '
'LookupTable {} (copied from {})'.format(newKey, oldKey))
lut = fslcmaps.LookupTable(key=newKey, name=newName)
for label in self.__selectedLut.labels():
lut.insert(label.value,
name=label.name,
colour=label.colour,
enabled=label.enabled)
fslcmaps.registerLookupTable(lut, self.overlayList, self.displayCtx)
self.__updateLutChoices()
self.__setLut(lut)
def __onNewLut(self, ev):
"""Called when the user presses the *New LUT* button.
Prompts the user to enter a name (via :func:`promptForLutName`), and
then creates and registers a new :class:`.LookupTable`
instance. Updates this ``LookupTablePanel`` via the
:meth:`__updateLutChoices` and :meth:`__setLut` methods.
"""
key, name = promptForLutName()
if key is None:
return
log.debug('Creating and registering new '
'LookupTable: {}'.format(key))
lut = fslcmaps.LookupTable(key=key, name=name)
fslcmaps.registerLookupTable(lut, self.overlayList, self.displayCtx)
self.__updateLutChoices()
self.__setLut(lut)
def test_LookupTable():
lut = tw.dedent("""
1 0 0 0 Label 1
2 0 0 1 Label 2
3 0 1 1 Label 3
4 1 1 1 Label 4
""").strip()
colours = [(0, 0, 0, 1),
(0, 0, 1, 1),
(0, 1, 1, 1),
(1, 1, 1, 1)]
with tempdir():
with open('lut.txt', 'wt') as f:
f.write(lut)
lut = fslcm.LookupTable('mylut', 'My LUT', 'lut.txt')
assert lut.key == 'mylut'
assert lut.name == 'My LUT'
assert str( lut) == 'My LUT'
assert repr(lut) == 'My LUT'
assert len(lut) == 4
for i in range(3):
assert lut[i].value == i + 1
assert lut.index(i + 1) == i
assert lut.max() == 4
assert lut.saved
for i in range(4):
val = i + 1
lbl = lut.get(val)
name = 'Label {}'.format(val)
assert lbl.value == val
assert lbl.name == name
assert lbl.internalName == name.lower()
assert tuple(lbl.colour) == colours[i]
assert lut.getByName(name) == lbl
assert list(lut.labels())[i] == lbl
repr(lbl)
hash(lbl)
called = {}
def removed(lt, top, args):
called['removed'] = args
def added(lt, top, args):
called['added'] = args
def saved(lt, top, args):
called['saved'] = True
def label(lt, top, args):
called['label'] = args
lut.register('l1', removed, topic='removed')
lut.register('l2', added, topic='added')
lut.register('l3', saved, topic='saved')
lut.register('l4', label, topic='label')
lbl0 = list(lut.labels())[0]
lbl0.name = 'My Label 1!'
assert called['saved']
assert called['label'] == (lbl0, 0)
assert not lut.saved
called.pop('saved')
lut.save('newfile.lut')
assert called['saved']
assert lut.saved
called.pop('saved')
lut.delete(4)
assert len(lut) == 3
assert lut.max() == 3
assert not lut.saved
assert called['saved']
called.pop('saved')
lut.save('newfile.lut')
assert lut.saved
lbl = lut.new('New big label')
assert lbl.value == 4
assert lut.max() == 4
assert len(lut) == 4
assert not lut.saved
assert called['added'] == (lbl, 3)
called.pop('saved')
lut.save('newfile.lut')
assert lut.saved
lbl = lut.insert(7, name='New huge label')
assert lbl.value == 7
assert lut.max() == 7
assert len(lut) == 5
assert not lut.saved
assert called['added'] == (lbl, 4)