Japanese text input is not rendered inline

[crftwr]

Sorry if this is a known issue.

I tried to input Japanese characters on "textual" demo app, and found that Textual app doesn't render IME text / list at expected place.

When typing Japanese characters (and probably other many non-English languages also), applications are expected to render IME text and candidate word list, with the help of the OS. And the position of the text and list should be the caret position in the text input widget.

I tested this only on Mac OS (Ventura 13.0.1), but I will check the same on Windows OS later and update this report.

Please see attached screenshots.

Textual app on Terminal app (unexpected behavior)

Memo app (expected behavior)

Terminal app (expected behavior)

[github-actions]

We found the following entry in the FAQ which you may find helpful:

• Does Textual support images?

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[darrenburns]

This is a good point - I noticed the same thing with Japanese input.

The issue is that Textual hides the terminal cursor and uses its own "virtual" cursor.

The dropdown appears at the terminal cursor's position, which is at the bottom right of the widget (since the full widget repaints from top left to bottom right).

It seems some TUI apps use the terminal cursor though, so the dropdown appears in the correct position. For example, vim and mc seem fine.

It'll require more research from us, but we definitely acknowledge the issue - thank you for the report!

[crftwr]

@darrenburns , thank you for your comment and aknowledgement!

[Lvdi]

@darrenburns
Hi, is there any plan for fixing this issue (or some hacky workaround)?
It's kind of a dealbreaker for creating IME-aware apps using Textual...

[1dancook]

Came to post about this issue but it's already here thankfully. Hopefully there is a fix soon for this. Thanks for all your hard work!

[darrenburns]

I'm working on a fix for this now. It should hopefully completely fix the IME issue for both Input and TextArea widgets. IME will stay aligned with the cursor in both of these widgets.

Preview:

It also fixes the OS emoji pop-up which had the same problem.

[1dancook]

I'm working on a fix for this now. It should hopefully completely fix the IME issue for both Input and TextArea widgets. IME will stay aligned with the cursor in both of these widgets.

Preview:

It also fixes the OS emoji pop-up which had the same problem.

That's awesome. I don't think I have time this week to check that out and give it a run for its money but I'm looking forward to the change! どうも！

[github-actions]

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[darrenburns]

This is merged into main and will be available in the next Textual release.