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Don't reset zeroconf until after (most) printers have been found

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CURA-2060
This commit is contained in:
fieldOfView 2016-09-28 11:31:52 +02:00
parent fb371f5556
commit 1ed3fc7c37
1 changed files with 5 additions and 5 deletions
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10
DiscoverUM3Action.py
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@ -27,8 +27,8 @@ class DiscoverUM3Action(MachineAction):
Application.getInstance().engineCreatedSignal.connect(self._createAdditionalComponentsView)
self._min_time_between_restart_discovery = 1
self._time_since_last_discovery = time.time() - self._min_time_between_restart_discovery
self._last_zeroconf_event_time = time.time()
self._zeroconf_change_grace_period = 0.25 # Time to wait after a zeroconf service change before allowing a zeroconf reset
printersChanged = pyqtSignal()
@ -41,19 +41,19 @@ class DiscoverUM3Action(MachineAction):
@pyqtSlot()
def restartDiscovery(self):
# Ensure that there is a bit of time between refresh attempts.
# Ensure that there is a bit of time after a printer has been discovered.
# This is a work around for an issue with Qt 5.5.1 up to Qt 5.7 which can segfault if we do this too often.
# It's most likely that the QML engine is still creating delegates, where the python side already deleted or
# garbage collected the data.
# Whatever the case, waiting a bit ensures that it doesn't crash.
if time.time() - self._time_since_last_discovery > self._min_time_between_restart_discovery:
if time.time() - self._last_zeroconf_event_time > self._zeroconf_change_grace_period:
if not self._network_plugin:
self.startDiscovery()
else:
self._network_plugin.startDiscovery()
self._time_since_last_discovery = time.time()
def _onPrinterDiscoveryChanged(self, *args):
self._last_zeroconf_event_time = time.time()
self.printersChanged.emit()
@pyqtProperty("QVariantList", notify = printersChanged)