class DoubleEditor(QWidget):
"""
Taken from https://gist.github.com/dennis-tra/994a65d6165a328d4eabaadbaedac2cc
▲▼ Slider
DoubleEditor is based on QWidget and gives a combination of a QDoubleSpinBox() and (own) DoubleSlider
with appropiate minima, maxima and stepsizes and which, above all, are synchronized.
"""
def __init__(self, minval, maxval, stepsize=.1, parent=None):
super(DoubleEditor, self).__init__(parent)
# Edit field
self.maxval = maxval
self.minval = minval
# print("self.maxval: ", self.maxval)
self.edit = QDoubleSpinBox(self)
self.edit.setKeyboardTracking(False)
self.edit.setRange(self.minval, self.maxval)
self.edit.setSingleStep(stepsize)
self.edit.setMinimumWidth(70)
if stepsize < 1.:
decimals = int(np.ceil(-np.log10(stepsize)))
else:
decimals = 1
self.edit.setDecimals(decimals)
# Slider
self.slider = DoubleSlider(min_val=self.minval, max_val=self.maxval, stepsize=stepsize,
orientation=Qt.Vertical, parent=self)
self.slider.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Expanding)
# Ticks
self.q_ticks = QSlider.TicksBelow
self.slider.setTickPosition(self.q_ticks)
self.tick_amount = 6
self.slider_range = self.slider.maximum() - self.slider.minimum()
self.tick_interval = int(round(self.slider_range / (self.tick_amount-1)))
self.slider.setTickInterval(self.tick_interval)
# ...labels
font = QFont()
font.setPointSize(8)
self.tick_str1 = QLabel('{:.0f}'.format(self.minval), self)
self.tick_str2 = QLabel('{:.0f}'.format(self.maxval), self)
self.tick_str1.setFont(font)
self.tick_str2.setFont(font)
self.slider_tick_layout = QGridLayout()
self.tick_str1.setAlignment(Qt.AlignBottom | Qt.AlignLeft)
self.tick_str2.setAlignment(Qt.AlignTop | Qt.AlignLeft)
self.slider_tick_layout.addWidget(self.slider, 0, 0, self.tick_amount, 1)
self.slider_tick_layout.addWidget(self.tick_str2, 0, 1, 1, 1)
self.slider_tick_layout.addWidget(self.tick_str1, self.tick_amount - 1, 1, 1, 1)
# Layout
self.layout = QVBoxLayout()
self.layout.addLayout(self.slider_tick_layout)
self.layout.addWidget(self.edit)
self.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Expanding)
self.setLayout(self.layout)
# Signals and slots
self.edit.valueChanged.connect(self.slider.setValue)
self.slider.doubleValueChanged.connect(self.edit.setValue)
@Slot(float)
def set_range(self, min, max):
# update min and max values
self.minval = min
self.maxval = max
# set new range for spinbox and slider
self.edit.setRange(self.minval, self.maxval)
self.slider.set_range(self.minval, self.maxval)
# calculate and set new slider ranges
self.slider.setTickPosition(self.q_ticks)
self.slider_range = self.slider.maximum() - self.slider.minimum()
self.tick_interval = int(round(self.slider_range / (self.tick_amount - 1)))
self.slider.setTickInterval(self.tick_interval)
# change slider min max values
self.tick_str1.setText('{:.0f}'.format(self.minval))
self.tick_str2.setText('{:.0f}'.format(self.maxval))
# update widgets and layouts
self.edit.update()
self.slider.update()
self.slider_tick_layout.update()
self.layout.update()
self.update()
