Affects a lot of classes. Very thoroughly checked signal connections and deferred calls to this method, add_do_method/add_undo_method calls, and so on.
Also renames the internal `_update_callback()` to `_redraw_callback()` for consistency.
Just a few comments have also been changed to say "redraw".
In CPUParticles2D, there was a private variable with the same name. It has been renamed to `do_redraw`.
This reverts commit 4b817a565c.
Fixes#64988.
Fixes#64997.
This caused several regressions (#64988, #64997,
https://github.com/godotengine/godot/issues/64997#issuecomment-1229970605)
which point at a flaw in the current logic:
- `Control::NOTIFICATION_ENTER_TREE` triggers a *deferred* notification with
`NOTIFCATION_THEME_CHANGED` as introduced in #62845.
- Some classes use their `THEME_CHANGED` to cache theme items in
member variables (e.g. `style_normal`, etc.), and use those member
variables in `ENTER_TREE`, `READY`, `DRAW`, etc. Since the `THEME_CHANGE`
notification is now deferred, they end up accessing invalid state and this
can lead to not applying theme properly (e.g. for EditorHelp) or crashing
(e.g. for EditorLog or CodeEdit).
So we need to go back to the drawing board and see if `THEME_CHANGED` can be
called earlier so that the previous logic still works?
Or can we refactor all engine code to make sure that:
- `ENTER_TREE` and similar do not depend on theme properties cached in member
variables.
- Or `THEME_CHANGE` does trigger a general UI update to make sure that any
bad theme handling in `ENTER_TREE` and co. gets fixed when `THEME_CHANGE`
does arrive for the first time. But that means having a temporary invalid
(and possibly still crashing) state, and doing some computations twice
which might be heavy (e.g. `EditorHelp::_update_doc()`).
Make `resource_local_to_scene` behave as described in the documentation. (If I understand correctly, the following **instance** refers to **the instance of the sub-scene**.)
2e24b76535/doc/classes/Resource.xml (L70-L72)
If the resources of the sub-scene are modified in the main scene, the modified resources will be recorded in the `tscn` file of the main scene. And the root node of the sub-scene will be set twice.
1. In the main scene, when encountering a sub-scene, the sub-scene will be initialized first;
2. Then use the resources in the main scene to reset the root node of the sub-scene.
This may make `resource_local_to_scene` not work as expected. The resources cannot be shared between the sub-scene root node and other ordinary nodes in the sub-scene.
Yes, if the resources have `resource_local_to_scene` enabled, this patch treats the modified resources of the sub-scene root node as resources in the sub-scene, not in the main scene. Although the modifications are recorded in the `tscn` file of the main scene.
