Add-on Panel missing from Active Tool & Workspace Settings

Archive Python API
1

Hello Everyone!

I have created a few add-ons (e.g. https://github.com/Shriinivas/writinganimation) for Blender 2.8. For capturing the user input, I have been creating the UI Panels in ‘Active Tools & Workspace Settings’ tab using the following code:

bl_label = "Writing Animation"
bl_idname = "CURVE_PT_writinganim"
bl_space_type = 'PROPERTIES'
bl_region_type = 'WINDOW'
bl_context = '.objectmode'#Active only in object mode

I had successfully tested this upto the build dated May 4th. But since May 15th build the add-on panel is not seen on ‘Active Tools & Workspace Settings’ anymore. The add-on is installed correctly and is available from the F3 menu, but the UI panel is not accessible.

Has there been any change recently with respect to displaying of add-on UI?
I would appreciate any help.

Thank you
Shrinivas

2

Something similar happened to me the same day, I updated Blender and boom, the addon I was making looked awful due to some changes in the UI, and just today I readed that it was a bug and with the update version it is fixed, but not good for ui addons yeah, so in my case I had to add some thingsa I was playing with overwriting the original ui class or registering and unregistering it to fit it all in a good way.

I can give you a working code of a panel in my addon:

import bpy
from bpy.types import Panel

class NSMUI_PT_panel(Panel):
    bl_idname = "NSMUI_PT_Panel"
    bl_label = "New Sculpt-Mode UI"
    #bl_category = "Test Addon"
    bl_space_type = "VIEW_3D"
    bl_region_type = "UI"

    def draw(self, context):

        if(context.mode != "SCULPT"):
            layout = self.layout
            row = layout.row() # define una fila
            row.operator('nsmui.ot_panel_setup', text="Sculpt-Mode Setup")

Also in my case this panel is located in the ‘Misc’ tab

I tried with your bl info ‘space_type’ and ‘region_type’ and now the ui is located in the render settings panel, at the very bottom, look for it maybe is there

image
image.png344×626 29.4 KB

3

Yes, that’s right. The UI appears under render settings if bl_context is commented out. But it appears in all the tabs except Active Tools and Workspace settings :). The other setting suggested by you:

    bl_space_type = "VIEW_3D"
    bl_region_type = "UI

works. With this there is a new Misc tab on tools panel in 3d view, displaying the add-on UI. But again, I have published a video, which shows the panel under Active Tools and Workspace settings, so as far as possible, I would like to retain the panel position.
Secondly, with the latest build, there are now a few other errors related to scene.update and depsgraph. Looks like quite a bit of add-on API changes underway. So I guess, it’s better to wait for a few more days to let the things settle down.

Thank you very much for your help, though!

Best regards
Shrinivas

4

I see… Well in that case I don’t know about how to retain the UI in that place…

I have found that they changed the default code but also they let commented the old one plus a note for the new settings

  class WorkSpaceButtonsPanel:
# bl_space_type = 'PROPERTIES'
# bl_region_type = 'WINDOW'
# bl_context = ".workspace"

# Developer note: this is displayed in tool settings as well as the 3D view.
bl_space_type = 'VIEW_3D'
bl_region_type = 'UI'
bl_category = "Tool"

There they use a parent class so the child ui class inherits from the parent class the space and region configuration…

The start of the child class:

class WORKSPACE_PT_main(WorkSpaceButtonsPanel, Panel):
bl_label = "Workspace"
bl_options = {'DEFAULT_CLOSED'}

def draw(self, context):

ALSO! I just found this that sure is useful for you, it’s about the change of the ui for the tool settings
https://www.mail-archive.com/[email protected]/msg109111.html

Is a change from 10th May

It seems like internally the tool settings have been moved to the 3D view… so now is a fact we can draw panels from the 'VIEW_3D' space(?) I think so

5

Ok I get this code works and it shows in the tool settings in both the properties space and the 3d viewport

import bpy
from bpy.types import Panel

class TEST_PT_uiPanel(Panel):
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'UI'
    bl_category = "Tool"
    bl_label = "TEST UI PANEL"

def draw(self, context):
    layout = self.layout
    row = layout.row() 
    row.operator('render.render', text="TEST BUTTON")

def register():
    from bpy.utils import register_class
    register_class(TEST_PT_uiPanel)

def unregister():
    from bpy.utils import unregister_class
    unregister_class(TEST_PT_uiPanel)

And a screenshot! I hope it is helpful for you!!

image
image.jpg678×799 111 KB

So the code I gave you in a first moment was right but need to write also this: bl_category = "Tool", to be able to show the panel in the tool settings of the properties space

1 Like
6

Yep! Now it’s working as desired. Thank you very much :slight_smile:

1 Like
7

Happy to hear that! hehe Nice addon btw! keep up the great work :slight_smile:

8

Oh thank you! :blush: