RFR: 8305418: [Linux] Replace obsolete XIM as Input Method Editor [v20]

[Glavo]

On Sun, 18 Feb 2024 23:10:12 GMT, Thiago Milczarek Sayao <tsayao at openjdk.org> wrote:

>> This replaces obsolete XIM and uses gtk api for IME.
>> Gtk uses [ibus](https://github.com/ibus/ibus)
>> 
>> Gtk3+ uses relative positioning (as Wayland does), so I've added a Relative positioning on `InputMethodRequest`.
>> 
>> [Screencast from 17-09-2023 21:59:04.webm](https://github.com/openjdk/jfx/assets/30704286/6c398e39-55a3-4420-86a2-beff07b549d3)
>
> Thiago Milczarek Sayao has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 94 commits:
> 
>  - Merge branch 'master' into new_ime
>  - Add signals to avoid warnings
>  - Merge branch 'master' into new_ime
>    
>    # Conflicts:
>    #	modules/javafx.graphics/src/main/native-glass/gtk/GlassApplication.cpp
>  - Add check for jview
>  - - Fix comment path
>  - - Fix double keyrelease
>  - - Use a work-around to relative positioning (until wayland is not officially supported)
>    - Unref pango attr list
>  - Merge branch 'master' into new_ime
>  - Account the case of !filtered
>  - Fix change of focus when on preedit + add filter on key release
>  - ... and 84 more: https://git.openjdk.org/jfx/compare/1fb56e33...eb988565

I've built this PR and made it available to some HMCL users (https://github.com/HMCL-dev/HMCL/discussions/3050).

I will also report back to you once I receive feedback.

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PR Comment: https://git.openjdk.org/jfx/pull/1080#issuecomment-2118224968