As Node Wrangler add-on is moving to extensions platform and maybe isn't shipped
with Blender from 4.2 onwards, some of it's more important functionalities which are
crucial for Blender UX can be ported inside core. Also see #121749.
This PR ports "Preview Node" operator from add-on inside `scripts/startup/bl_operators`.
When Shift-Ctrl (or Shift-Alt) clicked on the node operator connects output socket of the
node to active Output node in the tree (group, material, light, or world output). For Geometry
Nodes this is just handy operator, but in Shader Nodes, because Viewer Node isn't
implemented, this has always been the only way to quickly preview nodes by connecting
it to Material Output.
Changes made from Node Wrangler version:
- Renamed operator from "Preview Node" to "**Connect to Output**", because node previews
already mean a different thing in context of compositor and shader editor, and viewer node
is used for previewing in geometry nodes. Connect to Output is correct name because in every
context it's called that's what it does.
- Assigned shortcut Shift-Alt-Click in shader editor as well. Even though Shift-Ctrl click already
works, it's good to have consistency with geometry nodes, so that users can use same shortcut
in both contexts.
Operator doesn't work in compositor. It's not clear if that's wanted (to connect to Composite node),
and if it is it'll be added in separate PR.
Original authors of the add-on: Bartek Skorupa, Greg Zaal, Sebastian Koenig, Christian Brinkmann, Florian Meyer
Pull Request: https://projects.blender.org/blender/blender/pulls/122016
61178b22a2