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Add optional machine_extruder_count when creating a machine

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If the machine_extruder_count is not taken into consideration on machine creation, calling the
extruderList of that machine will return an incomplete list of extruders (since it considers the
default machine_extruder_count). This causes problems in machines with settable number of extruders
where the default machine_extruder_count is 1 while the machine may have more than 1 extruders.

The problem becomes especially visible when opening a project file with e.g. a CFFF with multiple
extruders, because when the machine is created we do not know yet how many extruders the printer
actually has.

CURA-7646
This commit is contained in:
Kostas Karmas 2020-08-10 14:49:41 +02:00
parent e7d95f6d90
commit 2828f45e89
1 changed files with 10 additions and 3 deletions
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13
cura/Settings/CuraStackBuilder.py
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@ -16,13 +16,13 @@ from .ExtruderStack import ExtruderStack
class CuraStackBuilder:
"""Contains helper functions to create new machines."""
@classmethod
def createMachine(cls, name: str, definition_id: str) -> Optional[GlobalStack]:
def createMachine(cls, name: str, definition_id: str, machine_extruder_count: Optional[int] = None) -> Optional[GlobalStack]:
"""Create a new instance of a machine.
:param name: The name of the new machine.
:param definition_id: The ID of the machine definition to use.
:param machine_extruder_count: The number of extruders in the machine.
:return: The new global stack or None if an error occurred.
"""
@ -66,7 +66,14 @@ class CuraStackBuilder:
Logger.logException("e", "Failed to create an extruder stack for position {pos}: {err}".format(pos = position, err = str(e)))
return None
for new_extruder in new_global_stack.extruderList: # Only register the extruders if we're sure that all of them are correct.
# If given, set the machine_extruder_count when creating the machine, or else the extruderList used bellow will
# not return the correct extruder list (since by default, the machine_extruder_count is 1) in machines with
# settable number of extruders. See CURA-7646.
if machine_extruder_count and 0 <= machine_extruder_count <= len(extruder_dict):
new_global_stack.setProperty("machine_extruder_count", "value", machine_extruder_count)
# Only register the extruders if we're sure that all of them are correct.
for new_extruder in new_global_stack.extruderList:
registry.addContainer(new_extruder)
# Register the global stack after the extruder stacks are created. This prevents the registry from adding another