def ProgressBar(n_steps, label="", allow_cancel=False, parent=None):
"""
Progressbar context manager for showing progress of workflow to user. Example::
with emzed.gui.ProgressBar(n_steps=100, allow_cancel=True) as handler:
for i in range(100):
# we simulate work of step i
# we update progressbar
handler.update(i, "step %03d" % i)
# we can check if user pressed "Cancel" button and stop our "workflow":
if handler.is_canceled():
break
"""
app = guidata.qapplication()
dlg = QProgressDialog(parent)
dlg.setLabelText(label)
dlg.setAutoClose(False)
dlg.setAutoReset(False)
if allow_cancel:
dlg.setCancelButtonText("Cancel")
dlg.setMaximum(n_steps)
class ProgressBarHandler(object):
def __init__(self, n_steps, dlg):
self._dlg = dlg
self._n_steps = n_steps
self._n = 0
self._canceled = False
dlg.canceled.connect(self._set_canceled)
dlg.setValue(0)
def _set_canceled(self):
self._canceled = True
dlg.close()
def update(self, n, message=None):
app.processEvents()
self._n = n
dlg.setValue(n + 1)
if message is not None:
dlg.setLabelText(message)
dlg.update()
app.processEvents()
def is_canceled(self):
return self._canceled
dlg.activateWindow()
dlg.show()
dlg.raise_()
app.processEvents()
handler = ProgressBarHandler(n_steps, dlg)
yield handler
dlg.close()
def ProgressBar(n_steps, label="", allow_cancel=False, parent=None):
"""
Progressbar context manager for showing progress of workflow to user. Example::
with emzed.gui.ProgressBar(n_steps=100, allow_cancel=True) as handler:
for i in range(100):
# we simulate work of step i
# we update progressbar
handler.update(i, "step %03d" % i)
# we can check if user pressed "Cancel" button and stop our "workflow":
if handler.is_canceled():
break
"""
app = guidata.qapplication()
dlg = QProgressDialog(parent)
dlg.setLabelText(label)
dlg.setAutoClose(False)
dlg.setAutoReset(False)
if allow_cancel:
dlg.setCancelButtonText("Cancel")
dlg.setMaximum(n_steps)
class ProgressBarHandler(object):
def __init__(self, n_steps, dlg):
self._dlg = dlg
self._n_steps = n_steps
self._n = 0
self._canceled = False
dlg.canceled.connect(self._set_canceled)
dlg.setValue(0)
def _set_canceled(self):
self._canceled = True
dlg.close()
def update(self, n, message=None):
app.processEvents()
self._n = n
dlg.setValue(n + 1)
if message is not None:
dlg.setLabelText(message)
dlg.update()
app.processEvents()
def is_canceled(self):
return self._canceled
dlg.activateWindow()
dlg.show()
dlg.raise_()
app.processEvents()
handler = ProgressBarHandler(n_steps, dlg)
yield handler
dlg.close()
