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Advice to update a "Tool" Qml plugin file

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Posted · Advice to update a "Tool" Qml plugin file


I'm looking for a code solution to update the "Tool" plugins for the release 5.0 of Cura.  How to specify the right QML file according to the QT release ?  In these plugins.


The tool_panel property is specified in the   "__init__.py" file IE : "tool_panel": "TranslateTool.qml",


Is it possible to change this property after the init ?


Best regards,



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    Posted (edited) · Advice to update a "Tool" Qml plugin file

    As usual with me : it's not clean but it's working ... Any advice for a better  or more elegant solution ?


    # Copyright (c) 2022 5axes
    # Initialy Based on the SupportBlocker plugin by Ultimaker B.V., and licensed under LGPLv3 or higher.
    VERSION_QT5 = False
        from PyQt6.QtCore import Qt
    except ImportError:
        # from PyQt5.QtCore import Qt
        VERSION_QT5 = True
    from . import CustomSupportsCylinder
    from UM.i18n import i18nCatalog
    i18n_catalog = i18nCatalog("cura")
    def getMetaData():
        if not VERSION_QT5:
        return {
            "tool": {
                "name": i18n_catalog.i18nc("@label", "Custom Supports Cylinder"),
                "description": i18n_catalog.i18nc("@info:tooltip", "Add 6 types of custom support"),
                "icon": "tool_icon.svg",
                "tool_panel": QmlFile,
                "weight": 8
    def register(app):
        return { "tool": CustomSupportsCylinder.CustomSupportsCylinder() }


    Edited by Cuq
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    Posted · Advice to update a "Tool" Qml plugin file

    If you dislike the unused import, you could use the Cura version instead:

        cura_version = Version(Application.getInstance().getVersion())
        tool_panel_path = "resources/qml/MeasureTool.qml"
        if cura_version < Version("5.0.0") and cura_version.getMajor() > 0:
            tool_panel_path = "resources/qml_qt5/MeasureTool.qml"

    But then you need to import UM.Version and UM.Application. Choose your poison.

    (good to see that you have decided to update your plugins afterall)

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    Posted · Advice to update a "Tool" Qml plugin file

    As usual @fieldOfView your analyse is very acurate. Yes I feal this PyQt6 import not very elegant. But if there is no other simple solution...  I will use the french expression : Choose between the plague and the cholera ... I will take the plague 

    Thanks for your feedback ... 


    And it's not because I update my plugins that I will make them available on the marketplace. I think I'm still waiting for a stable version of Cura 😄


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    • Solution
    Posted (edited) · Advice to update a "Tool" Qml plugin file

    So the Plague for Cura 5.0:


    VERSION_QT5 = False
        from PyQt6.QtCore import QT_VERSION_STR
    except ImportError:
        VERSION_QT5 = True


    Edited by Cuq
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