Python GizmoGroups not working in VSE #70768

New Issue

Lukas W · 2019-10-12T22:03:16+02:00

Lukas W commented

2019-10-12 22:03:16 +02:00

System Information
Operating system: Ubuntu 18.04
Graphics card: GeForce MX150

Blender Version
Broken: 2.81 alpha

Short description of error
GizmoGroups registered to a 'SEQUENCE_EDITOR' space are never polled and thus never executed

Exact steps for others to reproduce the error
gizmosmissing.blend
Open attached blendfile in a blender instance with visible console output and execute the script open in the text editor. Switch to the Video Editing workspace. No output in the console is generated. Switch back to the scripting workspace and swap in the commented out line "bl_space_type = 'IMAGE_EDITOR'". Execute again and this time switch to the UV Editing workspace. Note how this time the output "poll" is generated in the console repeatedly.
Expected result: The output "poll" is generated in both cases.

**System Information** Operating system: Ubuntu 18.04 Graphics card: GeForce MX150 **Blender Version** Broken: 2.81 alpha **Short description of error** GizmoGroups registered to a 'SEQUENCE_EDITOR' space are never polled and thus never executed **Exact steps for others to reproduce the error** [gizmosmissing.blend](https://archive.blender.org/developer/F7810916/gizmosmissing.blend) Open attached blendfile in a blender instance with visible console output and execute the script open in the text editor. Switch to the Video Editing workspace. No output in the console is generated. Switch back to the scripting workspace and swap in the commented out line "bl_space_type = 'IMAGE_EDITOR'". Execute again and this time switch to the UV Editing workspace. Note how this time the output "poll" is generated in the console repeatedly. Expected result: The output "poll" is generated in both cases.

Lukas W commented

2019-10-12 22:03:16 +02:00

Added subscriber: @geloescht

Lukas W commented

2019-10-12 22:14:20 +02:00

I am not familiar with Blender's C code and really don't know if I am on the right track here, but there is one function that seems to be called in all spaces that I can get gizmos working and not in spaces that gizmos don't work for me (tested in text editor and VSE): WM_gizmomap_tag_refresh()

Philipp Oeser commented

2019-10-14 13:49:02 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-10-14 13:49:02 +02:00

This actually works for the preview area if you set

bl_space_type = 'SEQUENCE_EDITOR'
bl_region_type = 'PREVIEW'

but for some reason is missing in the "regular" bl_region_type = 'WINDOW'

This actually works for the preview area if you set - bl_space_type = 'SEQUENCE_EDITOR' - bl_region_type = 'PREVIEW' but for some reason is missing in the "regular" bl_region_type = 'WINDOW'

Lukas W commented

2019-10-14 14:03:16 +02:00

Thank you so much! Using gizmos in the preview region is probably a more common use, but I didn't know about it. So I think you can also treat this as a matter of incomplete documentation.

Philipp Oeser commented

2019-10-14 14:45:56 +02:00

Added subscriber: @ideasman42

Philipp Oeser commented

2019-10-14 14:45:56 +02:00

Well, I guess this should work for the other region_types as well...

@ideasman42 : checked a bit, seems like sequencer_main_region_draw doesnt call WM_gizmomap_draw [as opposed to sequencer_preview_region_draw].
But when I add that, ar->gizmo_map will be NULL there.
Checked a bit further and there seems nothing wrong with how the GizmoGroup is actually registered [rna_GizmoGroup_register] for the region_type = 'WINDOW' case...

Does this ring a bell?

Well, I guess this should work for the other region_types as well... @ideasman42 : checked a bit, seems like `sequencer_main_region_draw` doesnt call `WM_gizmomap_draw` [as opposed to sequencer_preview_region_draw]. But when I add that, `ar->gizmo_map` will be NULL there. Checked a bit further and there seems nothing wrong with how the `GizmoGroup` is actually registered [`rna_GizmoGroup_register`] for the region_type = 'WINDOW' case... Does this ring a bell?

Lukas W commented

2019-10-15 20:01:01 +02:00

I know this is not the right place to ask questions, but now that I have the attention of knowledgeable people on the rather obscure and new matter of custom gizmos: How do I make a 2D gizmo pan and scale with the area? It seems like in the node editor as well as the sequencer preview the gizmo is always drawn relative to the area frame and not to the content of the area.
I made a stackexchange question as well, but I have a feeling it will go unanswered: https://blender.stackexchange.com/questions/155528/python-how-to-pan-and-scale-gizmogroup-with-background

I know this is not the right place to ask questions, but now that I have the attention of knowledgeable people on the rather obscure and new matter of custom gizmos: How do I make a 2D gizmo pan and scale with the area? It seems like in the node editor as well as the sequencer preview the gizmo is always drawn relative to the area frame and not to the content of the area. I made a stackexchange question as well, but I have a feeling it will go unanswered: https://blender.stackexchange.com/questions/155528/python-how-to-pan-and-scale-gizmogroup-with-background

Richard Antalik commented

2020-01-21 14:59:08 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-01-21 14:59:08 +01:00

I havent really looked into this so will treat as known issue.
It may be very well bug, but I think this may easily turn out to accidental feature request

I havent really looked into this so will treat as known issue. It may be very well bug, but I think this may easily turn out to accidental feature request

blender-admin commented

2021-11-05 05:49:33 +01:00

This issue was referenced by 445361c2ac

This issue was referenced by 445361c2ace8fe51c874ec234e8786578c8e4635

Campbell Barton commented

2021-11-05 06:04:23 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Campbell Barton closed this issue

2021-11-05 06:04:23 +01:00

Campbell Barton self-assigned this 2021-11-05 06:04:23 +01:00

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Python GizmoGroups not working in VSE #70768