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Hi I am trying to create a tool that has a gizmo in the 2d/Image-editor view.
When adding a gizmo I use the self.gizmos.new("GIZMO_GT_dial_3d") to display a radial gizmo.
However I saw in the release notes for 2.82 there is a 2d gizmo that you now can display in UV view.
I would like to know what its name is so I can use it for my tool, self.gizmos.new("UV_WIDGET_NAME?")
If you know anything about this or somewhere I can see all listed types of gizmos that would be great.
TL;DR The UV translate tool uses GIZMO_GT_arrow_3d.
The gizmo groups that are used for the tools in the UV editor can be seen in _defs_image_uv_transform (space_toolsystem_toolbar.py).
The ID name of the gizmo group is IMAGE_GGT_gizmo2d_translate which is implemented in space_image.c. It uses ED_widgetgroup_gizmo2d_xform_no_cage_callbacks_set, which in turn calls ED_widgetgroup_gizmo2d_xform_callbacks_set that stores gizmo2d_xform_setup as function for the setup. Should the setup function be called this also results in gizmogroup2d_init being executed. Its return value is a GizmoGroup2D that is used to set gizmos for the operators through WM_gizmo_operator_set. The gizmo types that are returned by gizmogroup2d_init in a GizmoGroup2D are GIZMO_GT_arrow_3d, GIZMO_GT_cage_2d and GIZMO_GT_button_2d.
These functions are implemented in transform_gizmo_2d.c.
gizmogroup2d_init in your own gizmo group. It could be that you can just reuse IMAGE_GGT_gizmo2d_translate, but I haven't tested it and there may be issues that I haven't seen. Unfortunately I'm a bit busy at the moment, which is why I likely won't be able to investigate this further. Perhaps someone else will post an example or I will revisit this in the future.
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