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"""
Using ProgressDialog to show progress updates in a nested process.
"""
import time
import pyqtgraph as pg
app = pg.mkQApp("Progress Dialog Example")
def runStage(i):
"""Waste time for 2 seconds while incrementing a progress bar.
"""
with pg.ProgressDialog("Running stage %s.." % i, maximum=100, nested=True) as dlg:
for j in range(100):
time.sleep(0.02)
dlg += 1
if dlg.wasCanceled():
print("Canceled stage %s" % i)
break
def runManyStages(i):
"""Iterate over runStage() 3 times while incrementing a progress bar.
"""
with pg.ProgressDialog("Running stage %s.." % i, maximum=3, nested=True, wait=0) as dlg:
for j in range(1,4):
runStage('%d.%d' % (i, j))
dlg += 1
if dlg.wasCanceled():
print("Canceled stage %s" % i)
break
with pg.ProgressDialog("Doing a multi-stage process..", maximum=5, nested=True, wait=0) as dlg1:
for i in range(1,6):
if i == 3:
# this stage will have 3 nested progress bars
runManyStages(i)
else:
# this stage will have 2 nested progress bars
runStage(i)
dlg1 += 1
if dlg1.wasCanceled():
print("Canceled process")
break
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