bug#51760: 29.0.50; xwidget-webkit do not support system input method

bug#51760: 29.0.50; xwidget-webkit do not support system input method

[tumashu]

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When I open https://cn.bing.com with xwidget-webkit and entry "e" into
auto insert mode. I can't enable system input method and input Chinese chars.


I use fcitx input method.


Any suggestion?






In GNU Emacs 29.0.50 (build 5, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
 of 2021-11-11 built on debian
Repository revision: b668399f7f47b09b74a4dfb59c8031b2e0a7c1ff
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Debian GNU/Linux 11 (bullseye)

Configured using:
 'configure --prefix=/home/feng/emacs/emacs29-gtk-20211110
 --with-xwidgets --with-json'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
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X11 XDBE XIM XPM XWIDGETS GTK3 ZLIB

Important settings:
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  value of $XMODIFIERS: @im=fcitx
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Major mode: ELisp/l

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  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
/home/feng/.emacs.d/elpa-29/transient-20211105.100/transient hides /home/feng/emacs/emacs29-gtk-20211110/share/emacs/29.0.50/lisp/transient

Features:
(gnutls network-stream url-http url-gw nsm url-cache url-auth jka-compr
shadow mail-extr emacsbug sendmail magit-extras eieio-opt speedbar
ezimage dframe shortdoc help-fns radix-tree pyim-dhashcache async
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bug#51760: 29.0.50; xwidget-webkit do not support system input method

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

tumashu <tumashu@163.com> writes:

> When I open https://cn.bing.com with xwidget-webkit and entry "e" into
> auto insert mode. I can't enable system input method and input Chinese chars.

Please specify what you mean by "can't enable system input method".

What happens when you select the Chinese input method?  Does fcitx
display it as active?  And what happens when you type such characters?
Do they fail to appear, or are the characters you type on your keyboard
inserted instead of the Chinese characters you wanted to type, without
going through the input method?

> I use fcitx input method.

FWIW, it works here with ibus-libpinyin.

Thanks.

bug#51760: 29.0.50; xwidget-webkit do not support system input method

[tumashu]

At 2021-11-12 08:24:53, "Po Lu via \"Bug reports for GNU Emacs, the Swiss army knife of text editors\"" <bug-gnu-emacs@gnu.org> wrote:
>tumashu <tumashu@163.com> writes:
>
>> When I open https://cn.bing.com with xwidget-webkit and entry "e" into
>> auto insert mode. I can't enable system input method and input Chinese chars.
>
>Please specify what you mean by "can't enable system input method".
>
>What happens when you select the Chinese input method?  Does fcitx
>display it as active?  And what happens when you type such characters?
>Do they fail to appear, or are the characters you type on your keyboard
>inserted instead of the Chinese characters you wanted to type, without
>going through the input method?

When I type "nihao",
fcitx will show candidate window of "n" then dispear, 
if I type "i" at the moment, it will show "i" then dispear again.




>
>> I use fcitx input method.
>
>FWIW, it works here with ibus-libpinyin.

Really? I will try it.

>
>Thanks.
>
>

bug#51760: 29.0.50; xwidget-webkit do not support system input method

[tumashu]

At 2021-11-12 08:59:41, "tumashu" <tumashu@163.com> wrote:
>
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>At 2021-11-12 08:24:53, "Po Lu via \"Bug reports for GNU Emacs, the Swiss army knife of text editors\"" <bug-gnu-emacs@gnu.org> wrote:
>>tumashu <tumashu@163.com> writes:
>>
>>> When I open https://cn.bing.com with xwidget-webkit and entry "e" into
>>> auto insert mode. I can't enable system input method and input Chinese chars.
>>
>>Please specify what you mean by "can't enable system input method".
>>
>>What happens when you select the Chinese input method?  Does fcitx
>>display it as active?  And what happens when you type such characters?
>>Do they fail to appear, or are the characters you type on your keyboard
>>inserted instead of the Chinese characters you wanted to type, without
>>going through the input method?
>
>When I type "nihao",
>fcitx will show candidate window of "n" then dispear, 
>if I type "i" at the moment, it will show "i" then dispear again.
>
>
>
>
>>
>>> I use fcitx input method.
>>
>>FWIW, it works here with ibus-libpinyin.
>
>Really? I will try it.

I have tested ibus, it can input Chinese, but it candidate window flicker...

>
>>
>>Thanks.
>>
>>

bug#51760: 29.0.50; xwidget-webkit do not support system input method

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

tumashu  <tumashu@163.com> writes:

> When I type "nihao", fcitx will show candidate window of "n" then
> dispear, if I type "i" at the moment, it will show "i" then dispear
> again.

What disappears?  The text you wanted to type, or the candidate window?
What happens if you type "nihao" (after which pre-edit will likely show
"你好"), followed immediately by enter?

Also try typing "venglish" followed by return on your keyboard, and let
me know what happens.  Thanks in advance.

> Really? I will try it.

Here's a stab in the dark: does the problem still occur if you comment
out the following line in xwidget.c?

    xw = XXWIDGET (view->model);
    window = gtk_widget_get_window (xw->widgetwindow_osr);
    embedder = gtk_widget_get_window (FRAME_GTK_OUTER_WIDGET (view->frame));

->  gdk_offscreen_window_set_embedder (window, embedder);
    xw->embedder = view->frame;
    xw->embedder_view = view;

bug#51760: 29.0.50; xwidget-webkit do not support system input method

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

tumashu  <tumashu@163.com> writes:

> I have tested ibus, it can input Chinese, but it candidate window
> flicker...

I'm investigating that problem, but so far haven't reached any concrete
conclusion yet.

Please try the other change I proposed.  Thanks in advance.

bug#51760: Re: bug#51760: 29.0.50; xwidget-webkit do not support system input method

[tumashu]

At 2021-11-12 09:20:21, "Po Lu" <luangruo@yahoo.com> wrote:
>tumashu  <tumashu@163.com> writes:
>
>> I have tested ibus, it can input Chinese, but it candidate window
>> flicker...
>
>I'm investigating that problem, but so far haven't reached any concrete
>conclusion yet.
>
>Please try the other change I proposed.  Thanks in advance.

worse,   flicker +  candidate window position jump