def __init__(self, parent=None, **kwargs):
BaseEditor.__init__(self, parent, **kwargs)
self.__method = DiscretizeEditor.EqualFreq
self.__nintervals = 4
layout = QVBoxLayout()
self.setLayout(layout)
self.__group = group = QButtonGroup(self, exclusive=True)
for method in [
self.EntropyMDL, self.EqualFreq, self.EqualWidth, self.Drop
]:
rb = QRadioButton(self,
text=self.Names[method],
checked=self.__method == method)
layout.addWidget(rb)
group.addButton(rb, method)
group.buttonClicked.connect(self.__on_buttonClicked)
self.__slbox = slbox = QGroupBox(
title="Number of intervals (for equal width/frequency)", flat=True)
slbox.setLayout(QHBoxLayout())
self.__slider = slider = Slider(orientation=Qt.Horizontal,
minimum=2,
maximum=10,
value=self.__nintervals,
enabled=self.__method
in [self.EqualFreq, self.EqualWidth],
pageStep=1,
tickPosition=QSlider.TicksBelow)
slider.valueChanged.connect(self.__on_valueChanged)
slbox.layout().addWidget(slider)
self.__slabel = slabel = QLabel()
slbox.layout().addWidget(slabel)
container = QHBoxLayout()
container.setContentsMargins(13, 0, 0, 0)
container.addWidget(slbox)
self.layout().insertLayout(3, container)
self.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Preferred)
def __init__(self, *args, thresholds=(0.0, 1.0), center=None, **kwargs):
super().__init__(*args, **kwargs)
low = round(clip(thresholds[0], 0., 1.), 2)
high = round(clip(thresholds[1], 0., 1.), 2)
high = max(low, high)
self.__threshold_low, self.__threshold_high = low, high
self.__center = center
form = QFormLayout(formAlignment=Qt.AlignLeft,
labelAlignment=Qt.AlignLeft,
fieldGrowthPolicy=QFormLayout.AllNonFixedFieldsGrow)
form.setContentsMargins(0, 0, 0, 0)
self.gradient_cb = QComboBox(
None,
objectName="gradient-combo-box",
)
self.gradient_cb.setAttribute(Qt.WA_LayoutUsesWidgetRect)
icsize = self.style().pixelMetric(QStyle.PM_SmallIconSize, None,
self.gradient_cb)
self.gradient_cb.setIconSize(QSize(64, icsize))
model = itemmodels.ContinuousPalettesModel()
model.setParent(self)
self.gradient_cb.setModel(model)
self.gradient_cb.activated[int].connect(self.activated)
self.gradient_cb.currentIndexChanged.connect(self.currentIndexChanged)
if center is not None:
def __on_center_changed():
self.__center = float(self.center_edit.text() or "0")
self.centerChanged.emit(self.__center)
self.center_box = QWidget()
center_layout = QHBoxLayout()
self.center_box.setLayout(center_layout)
width = QFontMetrics(self.font()).boundingRect("9999999").width()
self.center_edit = QLineEdit(text=f"{self.__center}",
maximumWidth=width,
placeholderText="0",
alignment=Qt.AlignRight)
self.center_edit.setValidator(QDoubleValidator())
self.center_edit.editingFinished.connect(__on_center_changed)
center_layout.setContentsMargins(0, 0, 0, 0)
center_layout.addStretch(1)
center_layout.addWidget(QLabel("Centered at"))
center_layout.addWidget(self.center_edit)
self.gradient_cb.currentIndexChanged.connect(
self.__update_center_visibility)
else:
self.center_box = None
slider_low = Slider(objectName="threshold-low-slider",
minimum=0,
maximum=100,
value=int(low * 100),
orientation=Qt.Horizontal,
tickPosition=QSlider.TicksBelow,
pageStep=10,
toolTip=self.tr("Low gradient threshold"),
whatsThis=self.tr(
"Applying a low threshold will squeeze the "
"gradient from the lower end"))
slider_high = Slider(objectName="threshold-low-slider",
minimum=0,
maximum=100,
value=int(high * 100),
orientation=Qt.Horizontal,
tickPosition=QSlider.TicksAbove,
pageStep=10,
toolTip=self.tr("High gradient threshold"),
whatsThis=self.tr(
"Applying a high threshold will squeeze the "
"gradient from the higher end"))
form.setWidget(0, QFormLayout.SpanningRole, self.gradient_cb)
if self.center_box:
form.setWidget(1, QFormLayout.SpanningRole, self.center_box)
form.addRow(self.tr("Low:"), slider_low)
form.addRow(self.tr("High:"), slider_high)
self.slider_low = slider_low
self.slider_high = slider_high
self.slider_low.valueChanged.connect(self.__on_slider_low_moved)
self.slider_high.valueChanged.connect(self.__on_slider_high_moved)
self.setLayout(form)
def __init__(self, *args, thresholds=(0.0, 1.0), center=None, **kwargs):
super().__init__(*args, **kwargs)
low = round(clip(thresholds[0], 0., 1.), 2)
high = round(clip(thresholds[1], 0., 1.), 2)
high = max(low, high)
self.__threshold_low, self.__threshold_high = low, high
self.__center = center
form = QFormLayout(
formAlignment=Qt.AlignLeft,
labelAlignment=Qt.AlignLeft,
fieldGrowthPolicy=QFormLayout.AllNonFixedFieldsGrow
)
form.setContentsMargins(0, 0, 0, 0)
self.gradient_cb = QComboBox(
None, objectName="gradient-combo-box",
)
self.gradient_cb.setAttribute(Qt.WA_LayoutUsesWidgetRect)
icsize = self.style().pixelMetric(
QStyle.PM_SmallIconSize, None, self.gradient_cb
)
self.gradient_cb.setIconSize(QSize(64, icsize))
model = itemmodels.ContinuousPalettesModel()
model.setParent(self)
self.gradient_cb.setModel(model)
self.gradient_cb.activated[int].connect(self.activated)
self.gradient_cb.currentIndexChanged.connect(self.currentIndexChanged)
if center is not None:
def on_center_spin_value_changed(value):
if self.__center != value:
self.__center = value
self.centerChanged.emit(self.__center)
self.center_box = QWidget()
center_layout = QHBoxLayout()
self.center_box.setLayout(center_layout)
self.center_edit = DoubleSpinBox(
value=self.__center,
minimum=DBL_MIN, maximum=DBL_MAX, minimumStep=0.01,
minimumContentsLenght=8,
stepType=DoubleSpinBox.AdaptiveDecimalStepType,
keyboardTracking=False,
sizePolicy=QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
)
self.center_edit.valueChanged.connect(on_center_spin_value_changed)
center_layout.setContentsMargins(0, 0, 0, 0)
center_layout.addStretch(1)
center_layout.addWidget(QLabel("Centered at"))
center_layout.addWidget(self.center_edit)
self.gradient_cb.currentIndexChanged.connect(
self.__update_center_visibility)
else:
self.center_box = None
slider_low = Slider(
objectName="threshold-low-slider", minimum=0, maximum=100,
value=int(low * 100), orientation=Qt.Horizontal,
tickPosition=QSlider.TicksBelow, pageStep=10,
toolTip=self.tr("Low gradient threshold"),
whatsThis=self.tr("Applying a low threshold will squeeze the "
"gradient from the lower end")
)
slider_high = Slider(
objectName="threshold-low-slider", minimum=0, maximum=100,
value=int(high * 100), orientation=Qt.Horizontal,
tickPosition=QSlider.TicksAbove, pageStep=10,
toolTip=self.tr("High gradient threshold"),
whatsThis=self.tr("Applying a high threshold will squeeze the "
"gradient from the higher end")
)
form.setWidget(0, QFormLayout.SpanningRole, self.gradient_cb)
if self.center_box:
form.setWidget(1, QFormLayout.SpanningRole, self.center_box)
form.addRow(self.tr("Low:"), slider_low)
form.addRow(self.tr("High:"), slider_high)
self.slider_low = slider_low
self.slider_high = slider_high
self.slider_low.valueChanged.connect(self.__on_slider_low_moved)
self.slider_high.valueChanged.connect(self.__on_slider_high_moved)
self.setLayout(form)
def __init__(self, parent: QWidget, variable: ContinuousVariable,
min_value: float, max_value: float, callback: Callable):
super().__init__(parent, callback)
if np.isnan(min_value) or np.isnan(max_value):
raise ValueError("Min/Max cannot be NaN.")
n_decimals = variable.number_of_decimals
abs_max = max(abs(min_value), max_value)
if abs_max * 10 ** n_decimals > self.MAX_FLOAT:
n_decimals = int(np.log10(self.MAX_FLOAT / abs_max))
self._value: float = min_value
self._n_decimals: int = n_decimals
self._min_value: float = self.__round_value(min_value)
self._max_value: float = self.__round_value(max_value)
sp_spin = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sp_spin.setHorizontalStretch(1)
sp_slider = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sp_slider.setHorizontalStretch(5)
sp_edit = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sp_edit.setHorizontalStretch(1)
class DoubleSpinBox(QDoubleSpinBox):
def sizeHint(self) -> QSize:
size: QSize = super().sizeHint()
return QSize(size.width(), size.height() + 2)
self._spin = DoubleSpinBox(
parent,
value=self._min_value,
minimum=-np.inf,
maximum=np.inf,
singleStep=10 ** (-self._n_decimals),
decimals=self._n_decimals,
minimumWidth=70,
sizePolicy=sp_spin,
)
self._slider = Slider(
parent,
minimum=self.__map_to_slider(self._min_value),
maximum=self.__map_to_slider(self._max_value),
singleStep=1,
orientation=Qt.Horizontal,
sizePolicy=sp_slider,
)
self._label_min = QLabel(
parent,
text=variable.repr_val(min_value),
alignment=Qt.AlignRight,
minimumWidth=60,
sizePolicy=sp_edit,
)
self._label_max = QLabel(
parent,
text=variable.repr_val(max_value),
alignment=Qt.AlignLeft,
minimumWidth=60,
sizePolicy=sp_edit,
)
self._slider.valueChanged.connect(self._apply_slider_value)
self._spin.valueChanged.connect(self._apply_spin_value)
self.layout().addWidget(self._spin)
self.layout().addWidget(self._label_min)
self.layout().addWidget(self._slider)
self.layout().addWidget(self._label_max)
self.setFocusProxy(self._spin)
def deselect():
self._spin.lineEdit().deselect()
try:
self._spin.lineEdit().selectionChanged.disconnect(deselect)
except TypeError:
pass
# Invoking self.setFocusProxy(self._spin), causes the
# self._spin.lineEdit()s to have selected texts (focus is set to
# provide keyboard functionality, i.e.: pressing ESC after changing
# spinbox value). Since the spin text is selected only after the
# delegate draws it, it cannot be deselected during initialization.
# Therefore connect the deselect() function to
# self._spin.lineEdit().selectionChanged only for editor creation.
self._spin.lineEdit().selectionChanged.connect(deselect)
self._slider.installEventFilter(self)
self._spin.installEventFilter(self)
class ContinuousVariableEditor(VariableEditor):
MAX_FLOAT = 2147483647
def __init__(self, parent: QWidget, variable: ContinuousVariable,
min_value: float, max_value: float, callback: Callable):
super().__init__(parent, callback)
if np.isnan(min_value) or np.isnan(max_value):
raise ValueError("Min/Max cannot be NaN.")
n_decimals = variable.number_of_decimals
abs_max = max(abs(min_value), max_value)
if abs_max * 10 ** n_decimals > self.MAX_FLOAT:
n_decimals = int(np.log10(self.MAX_FLOAT / abs_max))
self._value: float = min_value
self._n_decimals: int = n_decimals
self._min_value: float = self.__round_value(min_value)
self._max_value: float = self.__round_value(max_value)
sp_spin = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sp_spin.setHorizontalStretch(1)
sp_slider = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sp_slider.setHorizontalStretch(5)
sp_edit = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sp_edit.setHorizontalStretch(1)
class DoubleSpinBox(QDoubleSpinBox):
def sizeHint(self) -> QSize:
size: QSize = super().sizeHint()
return QSize(size.width(), size.height() + 2)
def validate(self, text: str, pos: int) -> Tuple[int, str, int]:
state, text, pos = super().validate(text, pos)
if text == "":
state = QValidator.Acceptable
return state, text, pos
def textFromValue(self, value):
if not np.isfinite(value):
return "?"
return super().textFromValue(value)
self._spin = DoubleSpinBox(
parent,
value=self._min_value,
minimum=-np.inf,
maximum=np.inf,
singleStep=10 ** (-self._n_decimals),
decimals=self._n_decimals,
minimumWidth=70,
sizePolicy=sp_spin,
)
self._slider = Slider(
parent,
minimum=self.__map_to_slider(self._min_value),
maximum=self.__map_to_slider(self._max_value),
singleStep=1,
orientation=Qt.Horizontal,
sizePolicy=sp_slider,
)
self._label_min = QLabel(
parent,
text=variable.repr_val(min_value),
alignment=Qt.AlignRight,
minimumWidth=60,
sizePolicy=sp_edit,
)
self._label_max = QLabel(
parent,
text=variable.repr_val(max_value),
alignment=Qt.AlignLeft,
minimumWidth=60,
sizePolicy=sp_edit,
)
self._slider.valueChanged.connect(self._apply_slider_value)
self._spin.valueChanged.connect(self._apply_spin_value)
self.layout().addWidget(self._spin)
self.layout().addWidget(self._label_min)
self.layout().addWidget(self._slider)
self.layout().addWidget(self._label_max)
self.setFocusProxy(self._spin)
def deselect():
self._spin.lineEdit().deselect()
try:
self._spin.lineEdit().selectionChanged.disconnect(deselect)
except TypeError:
pass
# Invoking self.setFocusProxy(self._spin), causes the
# self._spin.lineEdit()s to have selected texts (focus is set to
# provide keyboard functionality, i.e.: pressing ESC after changing
# spinbox value). Since the spin text is selected only after the
# delegate draws it, it cannot be deselected during initialization.
# Therefore connect the deselect() function to
# self._spin.lineEdit().selectionChanged only for editor creation.
self._spin.lineEdit().selectionChanged.connect(deselect)
self._slider.installEventFilter(self)
self._spin.installEventFilter(self)
@property
def value(self) -> float:
return self.__round_value(self._value)
@value.setter
def value(self, value: float):
if self._value is None or self.__round_value(value) != self.value:
self._value = value
self.valueChanged.emit(self.value)
self._spin.setValue(self.value)
# prevent emitting self.valueChanged again, due to slider change
slider_value = self.__map_to_slider(self.value)
self._value = self.__map_from_slider(slider_value)
self._slider.setValue(slider_value)
self._value = value
def _apply_slider_value(self):
self.value = self.__map_from_slider(self._slider.value())
def _apply_spin_value(self):
value = self._spin.value()
self.value = value if np.isfinite(value) else np.nan
def __round_value(self, value):
return round(value, self._n_decimals)
def __map_to_slider(self, value: float) -> int:
value = min(self._max_value, max(self._min_value, value))
return round(value * 10 ** self._n_decimals)
def __map_from_slider(self, value: int) -> float:
return value * 10 ** (-self._n_decimals)
def eventFilter(self, obj: Union[QSlider, QDoubleSpinBox], event: QEvent) \
-> bool:
if event.type() == QEvent.Wheel:
return True
return super().eventFilter(obj, event)
