Source code for est.gui.energyroi
"""Tools to select energy roi"""
from typing import Optional
from silx.gui import qt
from est.core.types.xasobject import XASObject
from est.gui.xas_object_definition import _SpectrumPlot
from ewokscore.missing_data import is_missing_data
class _RoiSettings(qt.QWidget):
sigValueChanged = qt.Signal()
"""signal emitted when roi value is changed"""
MAX_VALUE = 999999999
def __init__(self, parent=None):
qt.QWidget.__init__(self, parent)
self.setLayout(qt.QFormLayout())
self._minE = qt.QDoubleSpinBox(self)
self._minE.setRange(0, _RoiSettings.MAX_VALUE)
self._minE.setValue(0)
self.layout().addRow("min E", self._minE)
self._maxE = qt.QDoubleSpinBox(self)
self._maxE.setRange(0, _RoiSettings.MAX_VALUE)
self._maxE.setValue(_RoiSettings.MAX_VALUE)
self.layout().addRow("max E", self._maxE)
# connect signal / slot
self._minE.editingFinished.connect(self._changed)
self._maxE.editingFinished.connect(self._changed)
def _changed(self):
self.sigValueChanged.emit()
def setRangeE(self, min_E, max_E):
old = self.blockSignals(True)
try:
self._minE.setValue(min_E)
self._maxE.setValue(max_E)
finally:
self.blockSignals(old)
self.sigValueChanged.emit()
def getMinE(self):
return self._minE.value()
def setMinE(self, value):
self._minE.setValue(value)
def getMaxE(self):
return self._maxE.value()
def setMaxE(self, value):
self._maxE.setValue(value)
def getROI(self):
return self.getMinE(), self.getMaxE()
def setROI(self, roi):
min, max = roi
self.setMinE(min)
self.setMaxE(max)
def hasntBeenModified(self):
return (self._minE.value() == 0) and (
self._maxE.value() == _RoiSettings.MAX_VALUE
)
[docs]
class EnergyRoiWidget(qt.QMainWindow):
sigROIChanged = qt.Signal()
"""signal emit when the ROI is updated"""
def __init__(self, parent=None):
qt.QMainWindow.__init__(self, parent)
self.setWindowFlags(qt.Qt.Widget)
# plot
self._plot = _SpectrumPlot(self)
self.setCentralWidget(self._plot)
# roi settings
self._widget = _RoiSettings(self)
dockWidget = qt.QDockWidget(parent=self)
dockWidget.setWidget(self._widget)
self.addDockWidget(qt.Qt.RightDockWidgetArea, dockWidget)
dockWidget.setAllowedAreas(qt.Qt.RightDockWidgetArea | qt.Qt.LeftDockWidgetArea)
dockWidget.setFeatures(qt.QDockWidget.NoDockWidgetFeatures)
# add Markers
self._minEMarker = self._plot.addXMarker(
self._widget.getMinE(),
legend="from",
color="red",
draggable=True,
text="min E",
)
self._maxEMarker = self._plot.addXMarker(
self._widget.getMaxE(),
legend="to",
color="red",
draggable=True,
text="max E",
)
# expose API
self.setROI = self._widget.setROI
self.getROI = self._widget.getROI
# connect signal / slot
self._widget.sigValueChanged.connect(self._updateROIAnchors)
self._getMinMarker().sigDragFinished.connect(self._updateMinValuefromMarker)
self._getMaxMarker().sigDragFinished.connect(self._updateMaxValuefromMarker)
[docs]
def setXasObject(self, xas_obj):
if is_missing_data(xas_obj) or xas_obj is None:
self._plot.clear()
else:
self._plot.setXasObject(xas_obj)
if self._widget.hasntBeenModified() and xas_obj.energy is not None:
self._widget.setRangeE(xas_obj.energy.min(), xas_obj.energy.max())
def _getMinMarker(self):
return self._plot._plot._plotWidget._getMarker(self._minEMarker)
def _getMaxMarker(self):
return self._plot._plot._plotWidget._getMarker(self._maxEMarker)
def _updateROIAnchors(self):
oldMinMarker = self._getMinMarker().blockSignals(True)
oldMaxMarker = self._getMaxMarker().blockSignals(True)
self._getMinMarker().setPosition(self._widget.getMinE(), 0)
self._getMaxMarker().setPosition(self._widget.getMaxE(), 0)
self._getMinMarker().blockSignals(oldMinMarker)
self._getMaxMarker().blockSignals(oldMaxMarker)
self.sigROIChanged.emit()
def _updateMinValuefromMarker(self):
old = self._widget.blockSignals(True)
self._widget.setMinE(self._getMinMarker().getPosition()[0])
self._widget.blockSignals(old)
self.sigROIChanged.emit()
def _updateMaxValuefromMarker(self):
old = self._widget.blockSignals(True)
self._widget.setMaxE(self._getMaxMarker().getPosition()[0])
self._widget.blockSignals(old)
self.sigROIChanged.emit()