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Rate-limit event processing inside ProgressDialog

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This commit is contained in:
Luke Campagnola 2020-07-13 12:55:12 -07:00
parent ab5a2c5d11
commit f9327ea910
1 changed files with 9 additions and 2 deletions
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11
pyqtgraph/widgets/ProgressDialog.py
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@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
from ..Qt import QtGui, QtCore
from .. import ptime
__all__ = ['ProgressDialog']
@ -40,7 +41,7 @@ class ProgressDialog(QtGui.QProgressDialog):
nested (bool) If True, then this progress bar will be displayed inside
any pre-existing progress dialogs that also allow nesting.
============== ================================================================
"""
"""
# attributes used for nesting dialogs
self.nestedLayout = None
self._nestableWidgets = None
@ -48,6 +49,9 @@ class ProgressDialog(QtGui.QProgressDialog):
self._topDialog = None
self._subBars = []
self.nested = nested
# for rate-limiting Qt event processing during progress bar update
self._lastProcessEvents = None
isGuiThread = QtCore.QThread.currentThread() == QtCore.QCoreApplication.instance().thread()
self.disabled = disable or (not isGuiThread)
@ -203,7 +207,10 @@ class ProgressDialog(QtGui.QProgressDialog):
# Qt docs say this should happen automatically, but that doesn't seem
# to be the case.
if self.windowModality() == QtCore.Qt.WindowModal:
QtGui.QApplication.processEvents()
now = ptime.time()
if self._lastProcessEvents is None or (now - self._lastProcessEvents) > 0.2:
QtGui.QApplication.processEvents()
self._lastProcessEvents = now
def setLabelText(self, val):
if self.disabled: