Source code for est.gui.energyroi
"""Tools to select energy roi"""
from typing import Optional
from typing import Tuple
from typing import Union
from ewoksorange.gui.qt_utils.signals import block_signals
from silx.gui import qt
from ..core.types.xasobject import XASObject
from .SpectrumPlot import SpectrumPlot
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)
layout = qt.QFormLayout()
self.setLayout(layout)
# Min E
self._minE = qt.QDoubleSpinBox(self)
self._minE.setRange(0, _RoiSettings.MAX_VALUE)
self._minE.setValue(0)
self._minEEnable = qt.QCheckBox("Bounded", self)
self._minEEnable.setChecked(True)
minLayout = qt.QHBoxLayout()
minLayout.addWidget(self._minE)
minLayout.addWidget(self._minEEnable)
layout.addRow("min E", minLayout)
# Max E
self._maxE = qt.QDoubleSpinBox(self)
self._maxE.setRange(0, _RoiSettings.MAX_VALUE)
self._maxE.setValue(_RoiSettings.MAX_VALUE)
self._maxEEnable = qt.QCheckBox("Bounded", self)
self._maxEEnable.setChecked(True)
maxLayout = qt.QHBoxLayout()
maxLayout.addWidget(self._maxE)
maxLayout.addWidget(self._maxEEnable)
layout.addRow("max E", maxLayout)
# connect signal / slot
self._minE.editingFinished.connect(self._changed)
self._maxE.editingFinished.connect(self._changed)
self._minEEnable.stateChanged.connect(self._onMinEnableChanged)
self._maxEEnable.stateChanged.connect(self._onMaxEnableChanged)
def _changed(self) -> None:
self.sigValueChanged.emit()
def _onMinEnableChanged(self, state) -> None:
self._minE.setEnabled(state == qt.Qt.Checked)
self._changed()
def _onMaxEnableChanged(self, state) -> None:
self._maxE.setEnabled(state == qt.Qt.Checked)
self._changed()
def setRangeE(self, min_E: Optional[float], max_E: Optional[float]) -> None:
with block_signals(self):
self.setMinE(min_E)
self.setMaxE(max_E)
self.sigValueChanged.emit()
def _setRangeE(self, min_E: float, max_E: float) -> None:
with block_signals(self):
self._minE.setValue(min_E)
self._maxE.setValue(max_E)
self.sigValueChanged.emit()
def getMinE(self) -> Optional[float]:
return self._minE.value() if self._minEEnable.isChecked() else None
def setMinE(self, value: Optional[float]) -> None:
if value is None:
self._minEEnable.setChecked(False)
else:
self._minEEnable.setChecked(True)
self._minE.setValue(value)
def getMaxE(self) -> Optional[float]:
return self._maxE.value() if self._maxEEnable.isChecked() else None
def setMaxE(self, value: Optional[float]) -> None:
if value is None:
self._maxEEnable.setChecked(False)
else:
self._maxEEnable.setChecked(True)
self._maxE.setValue(value)
def getROI(self) -> Tuple[Optional[float], Optional[float]]:
return self.getMinE(), self.getMaxE()
def setROI(self, roi: Tuple[Optional[float], Optional[float]]) -> None:
min, max = roi
self.setMinE(min)
self.setMaxE(max)
def trimROI(self, min_E: float, max_E: float) -> None:
current_minE = self._minE.value()
reset_minE = current_minE == 0 or current_minE < min_E
current_maxE = self._maxE.value()
reset_maxE = current_maxE == self.MAX_VALUE or current_maxE > max_E
if reset_minE or reset_maxE:
self._setRangeE(min_E, max_E)
[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: Union[XASObject, dict, None]):
if xas_obj is None:
self._plot.clear()
else:
if isinstance(xas_obj, dict):
xas_obj = XASObject.from_dict(xas_obj)
if not isinstance(xas_obj, XASObject):
raise TypeError(str(type(xas_obj)))
self._plot.setXasObject(xas_obj)
if xas_obj.energy is not None and xas_obj.energy.size:
self._widget.trimROI(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):
min_marker = self._getMinMarker()
max_marker = self._getMaxMarker()
with block_signals(min_marker, max_marker):
value = self._widget.getMinE()
if value is None:
min_marker.setVisible(False)
else:
min_marker.setVisible(True)
min_marker.setPosition(value, 0)
value = self._widget.getMaxE()
if value is None:
max_marker.setVisible(False)
else:
max_marker.setVisible(True)
max_marker.setPosition(value, 0)
self.sigROIChanged.emit()
def _updateMinValuefromMarker(self):
with block_signals(self._widget):
self._widget.setMinE(self._getMinMarker().getPosition()[0])
self.sigROIChanged.emit()
def _updateMaxValuefromMarker(self):
with block_signals(self._widget):
self._widget.setMaxE(self._getMaxMarker().getPosition()[0])
self.sigROIChanged.emit()