def add_layout_items(layout: QLayout, items: Iterable[Union[QWidget,
QLayout]]):
for item in items:
if isinstance(item, QWidget):
layout.addWidget(item)
else:
layout.addLayout(item)
def _init_stats(self, layout: qtw.QLayout) -> None:
# histograms
self._qw_hist = self._add_widget(layout,
BarGraph(*self._init_histogram()))
self._qw_hist_cum = self._add_widget(
layout, BarGraph(*self._init_histogram(cum=True)))
# text stats
layout.addLayout(self._init_text_stats())
self._update_text_stats()
def _add_slider(self,
parent: qtw.QLayout,
callback,
smin: int,
smax: int,
sfac: float = 1.0,
initial: float = None,
label: str = None):
"""
Utility method to easily add sliders
"""
qlabel = None
slider = qtw.QSlider(qtc.Qt.Horizontal, self)
slider.setFocusPolicy(qtc.Qt.NoFocus)
slider.setMinimum(smin)
slider.setMaximum(smax)
if initial is not None:
slider.setValue(initial * sfac)
# proxies the slider-released-event to update the label
# containing the current value and applying the factor
# before invoking the provided callback
def proxy():
val = slider.value() / sfac
if qlabel is not None:
qlabel.setText(str(val))
callback(val)
slider.sliderReleased.connect(proxy)
if label is not None:
layout = qtw.QHBoxLayout()
layout.addWidget(qtw.QLabel(label))
qlabel = qtw.QLabel(str(initial or ""))
layout.addWidget(qlabel)
parent.addLayout(layout)
parent.addWidget(slider)
