feat: keyboard language component

[jawee]

Component for showing current input language (keyboard layout).

[Video-Nomad]

Works for en-US and ja-JP but not for Ukrainian for some reason. It just returns an empty string.
Locale ID shows 61608 and LCIDToLocaleName returns an empty string for Ukrainian.

[jawee]

And ukrainian is supposed to be 1058 (0x422) according to https://www.ryadel.com/en/microsoft-windows-lcid-list-decimal-and-hex-all-locale-codes-ids/

For some reason the value from GetKeyboardLayout doesn't follow the same "format" as swedish and us that I tested with. Will try to figure it out.

uk-UA (0x422): 0xfffffffff0a80422;
sv-SE (0x41d): 0x00000000041d0809;
en-US (0x409): 0x0000000004092000;

[jawee]

Not sure if this will work for every possible language. But added a few at random, and those I tried seem to work fine with this solution. Feels a bit hacky, but seems to be working pretty good.

[Video-Nomad]

@jawee I actually just wanted to post another solution right before your commit. Worked for me so far. Haven't tested it extensively though.

  private const uint LOCALE_SNAME = 0x0000005c;

  private static string GetInputLanguage()
  {
    var layout = GetKeyboardLayout(GetWindowThreadProcessId(GetForegroundWindow(), IntPtr.Zero));

    var sb = new StringBuilder();
    GetLocaleInfoW((uint)layout & 0xFFFF, LOCALE_SNAME, sb, sb.Capacity);

    return sb.ToString();
  }

    [DllImport("kernel32.dll")]
    public static extern IntPtr GetLocaleInfoW(uint locale, uint LCType, [MarshalAs(UnmanagedType.LPWStr)] StringBuilder lpLCData, int cchData);

[Video-Nomad]

It also might be a good idea to expose the updateInterval for the Observable as a config option, similar to how CpuComponent handles it. 1 second is way too slow for me, and 250 milliseconds feels more responsive, but people might want to configure that themselves.

[jawee]

Your solution looks cleaner in my opinion, I'm open to using that. I'll try to do some more testing sometime within the next few days.

Had a few minutes before having to start work, so I made the refresh interval configureable, I defaulted it to 1 second though, but open to change that to 250ms as well if that's preferable. Once a second works fine for my use case :)

[Video-Nomad]

I feel like 1 second is a reasonable default value.
Feel free to update the code with the solution I provided if you find it acceptable.
Thanks for the component 👍

[jawee]

Did some more testing, with more languages, and my solution seems fine for the all languages I've tried.
I also tried your solution, but it didn't work for swedish, so I think my solution is a decent starting point for now. :)

[Video-Nomad]

@jawee Very strange. I tested it on Swedish and it worked on my end.

In any case, if it works it works 👍

[jawee]

Probably because I use english language, but swedish keyboard layout. :) (probably really weird..)