Adds support for text buttons that capture text input, while the rest of the
UI stays interactive. This is useful for example for filter buttons in popups
that are used for searching. Current search popups are an ad-hoc implementation
that doesn't use the normal widget system (and thus are quite limited).
For the brush assets project this is important to allow quickly popping up the
brush asset shelf popup, immediately typing to search a brush, and activating
a brush with a single click (rather than having to confirm text input first).
All UI elements stay interactive with hover feedback, changing asset library
and catalogs is possible, tooltips and context menus can be opened, and any
text input is still sent to the search button.
Normal search popups already keep their search results interactive like this
during text input, but are too limited because they don't use our widget
system. For example custom layouts are not possible with them. With this
feature implemented, we could consider rewriting them to use the widget
system, removing the ad-hoc implementation.
Part of the brush assets project, see:
- https://projects.blender.org/blender/blender/issues/116337
- https://projects.blender.org/blender/blender/pulls/106303
Initially reviewed in:
https://projects.blender.org/blender/blender/pulls/122871
5f6586526c