class ProgressBar(QWidget):
def __init__(self, parent=None) -> None:
super().__init__(parent)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.pbar = QProgressBar()
self.description_label = QLabel()
self.eta_label = QLabel()
layout = QHBoxLayout()
layout.addWidget(self.description_label)
layout.addWidget(self.pbar)
layout.addWidget(self.eta_label)
self.setLayout(layout)
def setRange(self, min, max):
self.pbar.setRange(min, max)
def _set_value(self, value):
self.pbar.setValue(value)
QApplication.processEvents()
def _get_value(self):
return self.pbar.value()
def _set_description(self, desc):
self.description_label.setText(desc)
QApplication.processEvents()
def _set_eta(self, eta):
self.eta_label.setText(eta)
class QtLabeledProgressBar(QWidget):
"""QProgressBar with QLabels for description and ETA."""
def __init__(self,
parent: Optional[QWidget] = None,
prog: progress = None) -> None:
super().__init__(parent)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.progress = prog
self.qt_progress_bar = QProgressBar()
self.description_label = QLabel()
self.eta_label = QLabel()
base_layout = QVBoxLayout()
pbar_layout = QHBoxLayout()
pbar_layout.addWidget(self.description_label)
pbar_layout.addWidget(self.qt_progress_bar)
pbar_layout.addWidget(self.eta_label)
base_layout.addLayout(pbar_layout)
line = QFrame(self)
line.setObjectName("QtCustomTitleBarLine")
line.setFixedHeight(1)
base_layout.addWidget(line)
self.setLayout(base_layout)
def setRange(self, min, max):
self.qt_progress_bar.setRange(min, max)
def setValue(self, value):
self.qt_progress_bar.setValue(value)
QApplication.processEvents()
def setDescription(self, value):
if not value.endswith(': '):
value = f'{value}: '
self.description_label.setText(value)
QApplication.processEvents()
def _set_value(self, event):
self.setValue(event.value)
def _get_value(self):
return self.qt_progress_bar.value()
def _set_description(self, event):
self.setDescription(event.value)
def _make_indeterminate(self, event):
self.setRange(0, 0)
def _set_eta(self, event):
self.eta_label.setText(event.value)
def _set_total(self, event):
self.setRange(0, event.value)
class ProgressBar(QWidget):
style = """
QProgressBar
{
border: 2px solid grey;
border-radius: 5px;
text-align: center;
}
"""
def __init__(self, parent=None, title=None, minimum=0, maximum=1, value=0):
super(ProgressBar, self).__init__(parent)
layout = QGridLayout(self)
self.progressbar = QProgressBar(self)
self.progressbar.setMinimum(minimum)
self.progressbar.setMaximum(maximum)
self.progressbar.setValue(value)
self.progressbar.setStyleSheet(self.style)
self.label = QLabel("")
self.label.setStyleSheet("Qlabel { font-size: 20px }")
self.label.setAlignment(QtCore.Qt.AlignCenter)
self.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
self.setFixedSize(256, 64)
# self.progressbar.setValue(1)
layout.addWidget(self.progressbar, 0, 0)
layout.addWidget(self.label, 0, 0)
self.setLayout(layout)
if title:
self.setWindowTitle(title)
def setValue(self, value):
self.progressbar.setValue(value)
def setMaximumValue(self, value):
self.progressbar.setMaximum(value)
def incrementValue(self, increment=1):
self.progressbar.setValue(self.progressbar.value() + increment)
def onStart(self):
self.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
self.show()
# self.setWindowState(self.windowState() | QtCore.Qt.WindowActive)
def onFinished(self):
self.hide()
def updateIndicatorText(self, string):
self.label.setText(string)
class MemoryView(QWidget):
set_value = Signal(int, float, float)
"""
Initializes and updates the view of memory(progress) bar.
"""
def __init__(self, parent):
super(MemoryView, self).__init__(parent)
self.critical = CRITICAL_PERCENTAGE
self.memory_bar = QProgressBar(self)
self.memory_bar.setAlignment(Qt.AlignCenter)
self.set_value.connect(self._set_value)
def set_bar_color(self, current_value: int, new_value: int):
"""
Updates the memory(progress) bar style if needed
:param current_value: Used system memory in percentage from previous update
:param new_value: Latest used system memory in percentage
"""
if from_normal_to_critical(self.critical, current_value, new_value):
self.memory_bar.setStyleSheet(CRITICAL_STYLE)
elif from_critical_to_normal(self.critical, current_value, new_value):
self.memory_bar.setStyleSheet(NORMAL_STYLE)
else:
pass
def invoke_set_value(self, new_value: int, mem_used: float,
mem_avail: float):
self.set_value.emit(new_value, mem_used, mem_avail)
@Slot(int, float, float)
def _set_value(self, new_value, mem_used, mem_avail):
"""
Receives memory usage information passed by memory presenter
and updates the displayed content as well as the style if needed
:param new_value: Latest used system memory in percentage
:param mem_used: Used system memory in Gigabytes(GB)
:param mem_avail: Available system memory in GB
"""
# newValue is the latest mem_used_percent
current_value = self.memory_bar.value()
if current_value == new_value:
return
self.set_bar_color(current_value, new_value)
self.memory_bar.setValue(new_value)
display_str = f"{mem_used:3.1f}/{mem_avail:3.1f} GB ({new_value:d}%)"
self.memory_bar.setFormat(display_str)
class ProgressBar(QWidget):
"""QProgressBar with QLabels for description and ETA."""
def __init__(self, parent=None) -> None:
super().__init__(parent)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.pbar = QProgressBar()
self.description_label = QLabel()
self.eta_label = QLabel()
base_layout = QVBoxLayout()
pbar_layout = QHBoxLayout()
pbar_layout.addWidget(self.description_label)
pbar_layout.addWidget(self.pbar)
pbar_layout.addWidget(self.eta_label)
base_layout.addLayout(pbar_layout)
line = QFrame(self)
line.setObjectName("QtCustomTitleBarLine")
line.setFixedHeight(1)
base_layout.addWidget(line)
self.setLayout(base_layout)
def setRange(self, min, max):
self.pbar.setRange(min, max)
def _set_value(self, value):
self.pbar.setValue(value)
QApplication.processEvents()
def _get_value(self):
return self.pbar.value()
def _set_description(self, desc):
self.description_label.setText(desc)
QApplication.processEvents()
def _set_eta(self, eta):
self.eta_label.setText(eta)
class ProgressDialog(QDialog):
"""Progress dialog.
Parameters
----------
label - string or list of strings
task - QThread or list of QThread (implementing task interface)
parent - QObject
"""
canceled = Signal()
def __init__(self, label, task, parent=None):
"""Constructor."""
super().__init__(parent)
self._label = label
self._task = task
if (isinstance(self._label, (list, tuple)) and
isinstance(self._task, (list, tuple)) and
len(self._label) == len(self._task)) or \
(isinstance(self._label, str) and
isinstance(self._task, QThread)):
pass
else:
raise ValueError()
self._setup_ui()
def _setup_ui(self):
self.layout = QVBoxLayout()
self.dlg_label = QLabel(self)
self.cur_item_label = QLabel(self)
self.progress_bar = QProgressBar(self)
self.cancel = QPushButton('Cancel', self)
self.layout.addWidget(self.dlg_label)
self.layout.addWidget(self.cur_item_label)
self.layout.addWidget(self.progress_bar)
self.layout.addWidget(self.cancel)
self.setLayout(self.layout)
# Set initial value
self.progress_bar.setValue(0)
# Set progress bar limits and connect signals
self.progress_bar.setMinimum(0)
if hasattr(self._task, '__iter__'):
self.dlg_label.setText(self._label[0])
self._task[0].currentItem.connect(self.cur_item_label.setText)
self._task[0].itemDone.connect(self.inc_value)
pb_max = self._task[0].size()
for i in range(1, len(self._task)):
self._task[i].currentItem.connect(self.cur_item_label.setText)
self._task[i].itemDone.connect(self.inc_value)
self._task[i - 1].completed.connect(self._update_label)
self._task[i - 1].completed.connect(self._task[i].start)
pb_max += self._task[i].size()
self.progress_bar.setMaximum(pb_max)
self._task[-1].completed.connect(lambda: self._exit_dlg(1))
else:
self.dlg_label.setText(self._label)
self._task.currentItem.connect(self.cur_item_label.setText)
self._task.itemDone.connect(self.inc_value)
self._task.completed.connect(lambda: self._exit_dlg(1))
self.progress_bar.setMaximum(self._task.size())
self.cancel.pressed.connect(self.canceled.emit)
self.canceled.connect(lambda: self._exit_dlg(0))
self.progress_bar.valueChanged.connect(self._is_finished)
def _update_label(self):
next_idx = self._label.index(self.dlg_label.text()) + 1
if next_idx < len(self._label):
self.dlg_label.setText(self._label[next_idx])
def _exit_dlg(self, result):
if hasattr(self._task, '__iter__'):
for task in self._task:
task.exit_task()
self._wait_task(self._task[-1])
self._task[-1].deleteLater()
else:
self._task.exit_task()
self._wait_task(self._task)
self._task.deleteLater()
if result == 1:
self.accept()
elif result == 0:
self.reject()
def _wait_task(self, task):
init = time.time()
try:
while task.isRunning():
time.sleep(0.1)
if time.time() - init > 10:
self._exit_dlg(0)
raise Exception('Thread will not leave')
except RuntimeError:
pass
def _is_finished(self):
if self.progress_bar.value() == self.progress_bar.maximum():
self._exit_dlg(1)
def set_value(self, value):
"""Set progress bar value."""
self.progress_bar.setValue(value)
def inc_value(self):
"""Increase value."""
self.progress_bar.setValue(self.progress_bar.value()+1)
def exec_(self):
"""Override."""
if hasattr(self._task, '__iter__'):
self._task[0].start()
else:
self._task.start()
return super().exec_()