class Detector(MeasElement):
"""Element for selecting detector distance, depending on selector."""
CACHE_KEY = 'detector/presets'
SORT_KEY = lambda self, x: num_sort(x)
LABEL = 'Detector'
_allvalues = None
def clientUpdate(self, client):
self._allvalues = client.getDeviceParam(*self.CACHE_KEY.split('/'))
self._values = []
def createWidget(self, parent, client):
self.clientUpdate(client)
self._widget = QComboBox(parent)
self._updateWidget()
self._widget.currentIndexChanged.connect(self._updateValue)
return self._widget
def _updateWidget(self):
self._widget.clear()
self._widget.addItems(self._values)
if self.value in self._values:
self._widget.setCurrentIndex(self._values.index(self.value))
def otherChanged(self, eltype, value):
if eltype == 'selector' and self._allvalues is not None:
self._values = sorted(self._allvalues[value], key=self.SORT_KEY)
if self.value not in self._values:
if self._values:
self.value = self._values[0]
else:
self.value = None
if self._widget is not None:
self._updateWidget()
def _updateValue(self, index):
self.value = self._values[index]
self.changed.emit(self.value)
class Chopper(MeasElement):
"""Element for selecting chopper TOF resolution."""
CACHE_KEY = 'chopper/resolutions'
SORT_KEY = lambda self, x: num_sort(x)
LABEL = 'TOF dλ/λ'
def createWidget(self, parent, client):
resos = client.getDeviceParam(*self.CACHE_KEY.split('/'))
self._values = ['off'] + ['%.1f%%' % v
for v in (resos or [])] + ['manual']
self._widget = QComboBox(parent)
self._widget.addItems(self._values)
if self.value is not None and self.value in self._values:
self._widget.setCurrentIndex(self._values.index(self.value))
elif self.value is None and self._values:
self.value = self._values[0]
self._widget.currentIndexChanged.connect(self._updateValue)
return self._widget
def _updateValue(self, index):
self.value = self._values[index]
self.changed.emit(self.value)
class Collimation(ChoiceElement):
CACHE_KEY = 'collimation/mapping'
SORT_KEY = lambda self, x: num_sort(x)
LABEL = 'Collimation'
class Selector(ChoiceElement):
CACHE_KEY = 'selector/mapping'
SORT_KEY = lambda self, x: num_sort(x)
LABEL = 'Selector'
class SamplePos(ChoiceElement):
CACHE_KEY = 'sample_pos/presets'
SORT_KEY = lambda self, x: num_sort(x)
LABEL = 'Sample position'
class Resolution(ChoiceElement):
CACHE_KEY = 'resolution/mapping'
SORT_KEY = lambda self, x: num_sort(x)
LABEL = 'Resolution'