Add an indication when secure input is on

[nikitabobko]

Quite often users get confused that AeroSpace global hotkeys stop working because of macOS Secure Input feature that disallows intercepting global hotkeys

• https://github.com/nikitabobko/AeroSpace/issues?q=is%3Aissue%20state%3Aclosed%20secure%20input
• https://github.com/nikitabobko/AeroSpace/discussions?discussions_q=is%3Aopen+secure+input

It turns out it's possible to know if secure input is on globally:

import Carbon

print(IsSecureEventInputEnabled())

The suggestion is to use the mentioned API to warn users that the secure input is on.

UI

The exact UI is under the question

Options off the top of my head:

• Menu bar changes from workspace indication to exclamation mark
• Half-transparent overlay/popup

Contexts.app UI for inspiration

Open questions

• Is CGEvent.tapCreate API also affected by Secure Input? Investigate a possibility to use CGEvent.tapCreate for global hotkeys #1012

[zenangst]

@nikitabobko can confirm that CGEvent.tapCreate is also impacted by Secure Input, regardless of how it's configured (CGEventTapLocation and CGEventTapPlacement).