[vscode] - code doesn't work in vscode, but does in Blender's text editor.

theoryshaw

When using JacquesLucke's blender_vscode extension for VScode, the following code doesn't work.
But if you use this code in Blender's native text editor, it works.
Any ideas what I'm missing?

import bpy


class DRAGGABLEPROP_OT_subscribe(bpy.types.Operator):
    bl_idname  = "draggableprop.subscribe"
    bl_label   = ""
    stop: bpy.props.BoolProperty()  # This is used so we don't end up in an infinite loop because we blocked the release event

    def modal(self, context, event):
        if self.stop:
            context.scene.my_prop.is_dragging = False
            print("End Dragging !")
            return {'FINISHED'}
        if event.value == 'RELEASE':  # Stop the modal on next frame. Don't block the event since we want to exit the field dragging
            self.stop = True

        return {'PASS_THROUGH'}

    def invoke(self, context, event):
        self.stop = False
        context.window_manager.modal_handler_add(self)
        return {'RUNNING_MODAL'}


class TEST_PT_draggable_prop(bpy.types.Panel):
    bl_label = "Test my draggable prop"
    bl_space_type = 'PROPERTIES'
    bl_region_type = 'WINDOW'
    bl_context = "scene"

    def draw(self, context):
        layout = self.layout
        layout.prop(context.scene.my_prop, "value")
        layout.prop(context.scene.my_prop, "is_dragging")


def update_prop(self, value):
    if self.is_dragging:
        print("Dragging the slider !")
    else:
        print("Beginning dragging the slider !")
        self.is_dragging = True
        bpy.ops.draggableprop.subscribe('INVOKE_DEFAULT')


class DraggableProp(bpy.types.PropertyGroup):
    value: bpy.props.IntProperty(update=update_prop, min=0, max=100)
    is_dragging: bpy.props.BoolProperty()



def register():
    bpy.utils.register_class(DRAGGABLEPROP_OT_subscribe)  # Register modal operator
    bpy.utils.register_class(TEST_PT_draggable_prop)  # Register Panel to see what's going on
    bpy.utils.register_class(DraggableProp)  # Register our custom prop
    bpy.types.Scene.my_prop = bpy.props.PointerProperty(type=DraggableProp)  # Setup our custom prop

def unregister():
    bpy.utils.unregister_class(DRAGGABLEPROP_OT_subscribe)
    bpy.utils.unregister_class(TEST_PT_draggable_prop)
    bpy.utils.unregister_class(DraggableProp)
    del bpy.types.Scene.my_prop


if __name__ == "__main__":
    register()

Moult

What's the error?

Coen

Have you watched this?

theoryshaw

What's the error?

There is none, it seems to run, but nothing shows up.

Have you watched this?

I have, it's a good one!

vpajic

@theoryshaw I think the problem is in how the extension is running the file. I suspected that register() is never actually executed, so I added the following code:

print(f"name is : {__name__}")
if __name__ == "__main__":
    print("this should print if __name__ == '__main__'")
    register()

The resulting output was:
name is : <run_path>

Compare this to the output when running in blender:
name is : main
this should print if name == 'main'

The solution? Remove the if __name__ == "__main__": and just call register() when running from vscode.

vpajic

@theoryshaw for further info: https://docs.python.org/3/library/runpy.html

theoryshaw

nice!...