` bevy_input_focus`: Rules for auto-navigation between overlapping focusable areas
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- Rust
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Description
## What problem does this solve or what need does it fill?
Autonavigation needs clear rules for dealing with overlapping focusable areas.
Made a quick diagram with some random cases:
The green area is the current input focus and we're interested in which areas would get visited in which order on the downwards path to the red area.
## What solution would you like?
Apply two rules for auto navigation when searching for navigable focus areas:
1. Ignore focus areas overlapping the current focus area.
2. If two focus areas are overlapping, ignore the one underneath.
Ideally it should be configurable though, there are cases where allowing auto navigation between intersecting areas is desirable. For example, navigating a stack of folders:
This could be implemented without intersected focus areas though by using smaller nodes for the focus areas:
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