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Do not trigger slicing if there's no slicable object

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CURA-6604
This commit is contained in:
Lipu Fei 2019-09-03 20:01:10 +02:00
parent 09dc209956
commit 0524796145
2 changed files with 13 additions and 5 deletions
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13
plugins/CuraEngineBackend/CuraEngineBackend.py
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@ -543,6 +543,15 @@ class CuraEngineBackend(QObject, Backend):
if error.getErrorCode() == Arcus.ErrorCode.BindFailedError and self._start_slice_job is not None:
self._start_slice_job.setIsCancelled(False)
# Check if there's any slicable object in the scene.
def hasSlicableObject(self) -> bool:
has_slicable = False
for node in DepthFirstIterator(self._scene.getRoot()):
if node.callDecoration("isSliceable"):
has_slicable = True
break
return has_slicable
## Remove old layer data (if any)
def _clearLayerData(self, build_plate_numbers: Set = None) -> None:
# Clear out any old gcode
@ -561,6 +570,10 @@ class CuraEngineBackend(QObject, Backend):
## Convenient function: mark everything to slice, emit state and clear layer data
def needsSlicing(self) -> None:
# CURA-6604: If there's no slicable object, do not (try to) trigger slice, which will clear all the current
# gcode. This can break Gcode file loading if it tries to remove it afterwards.
if not self.hasSlicableObject():
return
self.determineAutoSlicing()
self.stopSlicing()
self.markSliceAll()