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Put a change timer on the globalStacks model

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This decreases the time that a first thing is shown on the main screen (as the creation
of the global stack model doesn't block the UI anymore)
This commit is contained in:
Jaime van Kessel 2019-02-21 18:30:23 +01:00
parent 48ed9b6e20
commit 5118953373
1 changed files with 11 additions and 3 deletions
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14
cura/GlobalStacksModel.py
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@ -3,7 +3,7 @@
from UM.Qt.ListModel import ListModel from UM.Qt.ListModel import ListModel
from PyQt5.QtCore import pyqtProperty, Qt, pyqtSignal from PyQt5.QtCore import pyqtProperty, Qt, pyqtSignal, QTimer
from cura.PrinterOutputDevice import ConnectionType from cura.PrinterOutputDevice import ConnectionType
from cura.Settings.CuraContainerRegistry import CuraContainerRegistry from cura.Settings.CuraContainerRegistry import CuraContainerRegistry
@ -26,18 +26,26 @@ class GlobalStacksModel(ListModel):
self.addRoleName(self.MetaDataRole, "metadata") self.addRoleName(self.MetaDataRole, "metadata")
self._container_stacks = [] self._container_stacks = []
self._change_timer = QTimer()
self._change_timer.setInterval(200)
self._change_timer.setSingleShot(True)
self._change_timer.timeout.connect(self._update)
# Listen to changes # Listen to changes
CuraContainerRegistry.getInstance().containerAdded.connect(self._onContainerChanged) CuraContainerRegistry.getInstance().containerAdded.connect(self._onContainerChanged)
CuraContainerRegistry.getInstance().containerMetaDataChanged.connect(self._onContainerChanged) CuraContainerRegistry.getInstance().containerMetaDataChanged.connect(self._onContainerChanged)
CuraContainerRegistry.getInstance().containerRemoved.connect(self._onContainerChanged) CuraContainerRegistry.getInstance().containerRemoved.connect(self._onContainerChanged)
self._filter_dict = {} self._filter_dict = {}
self._update() self._updateDelayed()
## Handler for container added/removed events from registry ## Handler for container added/removed events from registry
def _onContainerChanged(self, container): def _onContainerChanged(self, container):
# We only need to update when the added / removed container GlobalStack # We only need to update when the added / removed container GlobalStack
if isinstance(container, GlobalStack): if isinstance(container, GlobalStack):
self._update() self._updateDelayed()
def _updateDelayed(self):
self._change_timer.start()
def _update(self) -> None: def _update(self) -> None:
items = [] items = []