Nodes may have been deleted by shortcuts. For example, when switching
scenes with `Ctrl` + `Tab` / `Ctrl` + `Shift` + `Tab`, some controls
will be deleted and recreated.
Make the filter mode of the texture preview match the node/resource
being edited where applicable, and nearest neighbor with mipmaps as a
fallback.
Make the Edit Region button for Sprite3D only appear when region is
enabled, to match behavior of Sprite2D.
Fix the editor not correctly clearing reference to previously edited
resources, resulting in a visual bug displaying the incorrect texture.
Adds the bind `add_selection_for_next_occurrence` to TextEdit, with CTRL+D as the default shortcut.
When the bind is performed, ff a selection is currently active with the last caret in text fields, searches for the next occurrence of the selection, adds a caret and selects the next occurrence.
If no selection is currently active with the last caret in text fields, selects the word currently under the caret.
The action can be performed sequentially for all occurrences of the selection of the last caret and for all existing carets. The viewport is adjusted to the latest newly added caret.
The bind and the behaviour is similar to VS Code's "Add Selection to Next Find Match" and JetBrains' "Add Selection for Next Occurrence". It takes advantage of the multi-caret API.
The default shortcut for `select_word_under_caret` has been changed to ALT+G, in order to give priority to CTRL+D for `add_selection_for_next_occurrence` to better align with popular IDEs and editors.
1. Viewport::get_visible_rect().position is always zero.
So Control::get_window_rect is identical to Control::get_global_rect.
Remove Control::get_window_rect since it is not used in the source code.
2. sqrt(a * a) = abs(a) for doubles
3. Simplify affine_inverse combination
4. Simplify calculation in shaders
The visibility of the `ScrollBar` was used as a condition for judging whether it should scroll.
**Visible** and **scrollable** are currently not the same in some cases (`SCROLL_MODE_SHOW_NEVER`).
This makes `SCROLL_MODE_SHOW_NEVER` not working properly.
This patch will make `SCROLL_MODE_SHOW_NEVER` available, so that the external `SrollBar` can
share the internal `ScrollBar`'s data, we can achieve the purpose of replacing the internal
`ScrollBar` with a custom external one.
