Source code for darfix.gui.magnificationWidget
from __future__ import annotations
from silx.gui import qt
from silx.utils.enum import Enum as _Enum
from ewoksorange.gui.parameterform import block_signals
from darfix import dtypes
[docs]class MagnificationWidget(qt.QMainWindow):
"""
Widget to apply magnification transformation to the data axes.
"""
sigComputed = qt.Signal()
def __init__(self, parent=None):
qt.QWidget.__init__(self, parent)
widget = qt.QWidget()
layout = qt.QVBoxLayout()
self._magnificationFactorWidget = _MagnificationFactorWidget(parent=self)
layout.addWidget(self._magnificationFactorWidget)
self._topographyCheckbox = qt.QCheckBox("Topography (obpitch)")
self._centerAxesCheckbox = qt.QCheckBox("Center axes")
self._centerAxesCheckbox.setChecked(True)
self._orientationCB = qt.QComboBox()
self._orientationCB.addItems(Orientation.values())
topographyAxis = qt.QLabel("Topography axis: ")
self._okButton = qt.QPushButton("Ok")
self._okButton.setEnabled(False)
self._okButton.pressed.connect(self._saveMagnification)
layout.addWidget(self._topographyCheckbox, alignment=qt.Qt.AlignRight)
self._topographyWidget = qt.QWidget()
topographyLayout = qt.QHBoxLayout()
topographyLayout.addWidget(topographyAxis)
topographyLayout.addWidget(self._orientationCB)
self._topographyWidget.setLayout(topographyLayout)
self._topographyWidget.hide()
self._topographyWidget.setMaximumHeight(40)
layout.addWidget(self._topographyWidget, alignment=qt.Qt.AlignRight)
layout.addWidget(self._okButton)
layout.addWidget(self._centerAxesCheckbox)
spacer = qt.QWidget(parent=self)
spacer.setSizePolicy(qt.QSizePolicy.Minimum, qt.QSizePolicy.Expanding)
layout.addWidget(spacer)
# self._okButton.pressed.connect(self._saveMagnification)
self._topographyCheckbox.toggled.connect(self._checkTopography)
widget.setLayout(layout)
self.setCentralWidget(widget)
[docs] def setDataset(self, owdataset: dtypes.OWDataset):
self.parent = owdataset.parent
self.dataset = owdataset.dataset
self.indices = owdataset.indices
self.bg_indices = owdataset.bg_indices
self.bg_dataset = owdataset.bg_dataset
if not self.dataset.dims:
msg = qt.QMessageBox()
msg.setIcon(qt.QMessageBox.Warning)
msg.setText(
"This widget has to be used before selecting any region of \
interest and after selecting the dimensions"
)
msg.exec_()
else:
self._okButton.setEnabled(True)
@property
def magnification(self):
return self._magnificationFactorWidget.getMagnification()
@property
def orientation(self):
if self._topographyCheckbox.isChecked():
return self._orientationCB.currentIndex()
else:
return -1
@orientation.setter
def orientation(self, orientation):
if orientation != -1:
self._topographyCheckbox.setChecked(True)
self._orientationCB.setCurrentIndex(orientation)
@magnification.setter
def magnification(self, magnification: float):
self._magnificationFactorWidget.setMagnification(magnification=magnification)
[docs] def getDataset(self, parent) -> dtypes.OWDataset:
return dtypes.OWDataset(
parent=parent,
dataset=self.dataset,
indices=self.indices,
bg_indices=self.bg_indices,
bg_dataset=self.bg_dataset,
)
def _updateDataset(self, widget, dataset):
self.parent._updateDataset(widget, dataset)
self.dataset = dataset
def _checkTopography(self, checked: bool):
if checked:
self._topographyWidget.show()
else:
self._topographyWidget.hide()
def _saveMagnification(self):
print("save magnification", self.magnification)
self.dataset.compute_transformation(
self.magnification,
topography=[
self._topographyCheckbox.isChecked(),
self._orientationCB.currentIndex(),
],
center=self._centerAxesCheckbox.isChecked(),
)
self.sigComputed.emit()
class _MagnificationFactorWidget(qt.QWidget):
"""
Widget to define a magnification
"""
def __init__(self, parent=None):
qt.QWidget.__init__(self, parent)
layout = qt.QGridLayout()
self.setLayout(layout)
layout.addWidget(qt.QLabel("magnification: ", self), 0, 0, 2, 1)
self._magnificationQSB = qt.QDoubleSpinBox(parent=self)
self._magnificationQSB.setMinimum(0)
self._magnificationQSB.setSingleStep(0.1)
self._magnificationQSB.setDecimals(2)
layout.addWidget(self._magnificationQSB, 0, 1, 2, 1)
buttons_font = self.font()
buttons_font.setPixelSize(10)
self._2xMagnificationRB = qt.QPushButton("2x magnification")
layout.addWidget(
self._2xMagnificationRB,
0,
2,
1,
1,
)
self._2xMagnificationRB.setCheckable(True)
self._2xMagnificationRB.setFont(buttons_font)
self._2xMagnificationRB.setFocusPolicy(qt.Qt.NoFocus)
self._10xMagnificationRB = qt.QPushButton("10x magnification")
layout.addWidget(
self._10xMagnificationRB,
1,
2,
1,
1,
)
self._10xMagnificationRB.setCheckable(True)
self._10xMagnificationRB.setFont(buttons_font)
self._10xMagnificationRB.setFocusPolicy(qt.Qt.NoFocus)
# connect signal / slot
self._2xMagnificationRB.released.connect(
lambda: self.setMagnification(Value.PIXEL_2X.value)
)
self._10xMagnificationRB.released.connect(
lambda: self.setMagnification(Value.PIXEL_10X.value)
)
self._magnificationQSB.editingFinished.connect(self._updateCheckedButton)
# set up
self.setMagnification(Value.PIXEL_2X.value)
def getMagnification(self) -> float:
return self._magnificationQSB.value()
def setMagnification(self, magnification: float | str):
magnification = float(magnification)
self._magnificationQSB.setValue(magnification)
self._updateCheckedButton()
def _updateCheckedButton(self):
magnification = self.getMagnification()
with block_signals(self._2xMagnificationRB):
self._2xMagnificationRB.setChecked(magnification == Value.PIXEL_2X.value)
with block_signals(self._10xMagnificationRB):
self._10xMagnificationRB.setChecked(magnification == Value.PIXEL_10X.value)