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Make CuraEngineBackend respond to changes to the global container stack

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This way we can properly connect to propertyChanged signals and trigger
a reslice.

Contributes to CURA-1278
This commit is contained in:
Arjen Hiemstra 2016-05-30 12:23:05 +02:00
parent c63eb3871c
commit 0b3b718e87
1 changed files with 15 additions and 3 deletions
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18
plugins/CuraEngineBackend/CuraEngineBackend.py
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@ -55,8 +55,9 @@ class CuraEngineBackend(Backend):
self._stored_layer_data = []
#Triggers for when to (re)start slicing:
if Application.getInstance().getGlobalContainerStack():
Application.getInstance().getGlobalContainerStack().propertyChanged.connect(self._onSettingChanged) #Note: Only starts slicing when the value changed.
self._global_container_stack = None
Application.getInstance().globalContainerStackChanged.connect(self._onGlobalStackChanged)
self._onGlobalStackChanged()
#When you update a setting and other settings get changed through inheritance, many propertyChanged signals are fired.
#This timer will group them up, and only slice for the last setting changed signal.
@ -123,7 +124,7 @@ class CuraEngineBackend(Backend):
def slice(self):
self._stored_layer_data = []
if not self._enabled: #We shouldn't be slicing.
if not self._enabled or not self._global_container_stack: #We shouldn't be slicing.
return
if self._slicing: #We were already slicing. Stop the old job.
@ -375,3 +376,14 @@ class CuraEngineBackend(Backend):
Logger.log("d", "Backend quit with return code %s. Resetting process and socket.", self._process.wait())
self._process = None
self._createSocket()
## Called when the global container stack changes
def _onGlobalStackChanged(self):
if self._global_container_stack:
self._global_container_stack.propertyChanged.disconnect(self._onSettingChanged)
self._global_container_stack = Application.getInstance().getGlobalContainerStack()
if self._global_container_stack:
self._global_container_stack.propertyChanged.connect(self._onSettingChanged) #Note: Only starts slicing when the value changed.
self._onChanged()