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Add XInput 2 input method support

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* src/xterm.c (handle_one_xevent): Let input methods filter
events first before trying to handle an XI2 key press event.
This commit is contained in:
Po Lu 2021-11-21 09:22:31 +08:00
parent 64fc94b11e
commit b60c2a5d85
1 changed files with 102 additions and 43 deletions
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145
src/xterm.c
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@ -10350,6 +10350,104 @@ handle_one_xevent (struct x_display_info *dpyinfo,
= x_x_to_emacs_modifiers (FRAME_DISPLAY_INFO (f), state);
inev.ie.timestamp = xev->time;
#ifdef HAVE_X_I18N
XKeyPressedEvent xkey;
memset (&xkey, 0, sizeof xkey);
xkey.type = KeyPress;
xkey.serial = 0;
xkey.send_event = xev->send_event;
xkey.display = xev->display;
xkey.window = xev->event;
xkey.root = xev->root;
xkey.subwindow = xev->child;
xkey.time = xev->time;
xkey.state = state;
xkey.keycode = keycode;
xkey.same_screen = True;
if (x_filter_event (dpyinfo, (XEvent *) &xkey))
goto xi_done_keysym;
if (FRAME_XIC (f))
{
Status status_return;
nbytes = XmbLookupString (FRAME_XIC (f),
&xkey, (char *) copy_bufptr,
copy_bufsiz, &keysym,
&status_return);
if (status_return == XBufferOverflow)
{
copy_bufsiz = nbytes + 1;
copy_bufptr = alloca (copy_bufsiz);
nbytes = XmbLookupString (FRAME_XIC (f),
&xkey, (char *) copy_bufptr,
copy_bufsiz, &keysym,
&status_return);
}
if (status_return == XLookupNone)
goto xi_done_keysym;
else if (status_return == XLookupChars)
{
keysym = NoSymbol;
state = 0;
}
else if (status_return != XLookupKeySym
&& status_return != XLookupBoth)
emacs_abort ();
}
else
{
#endif
#ifdef HAVE_XKB
int overflow = 0;
KeySym sym = keysym;
if (dpyinfo->xkb_desc)
{
if (!(nbytes = XkbTranslateKeySym (dpyinfo->display, &sym,
state & ~mods_rtrn, copy_bufptr,
copy_bufsiz, &overflow)))
goto XI_OTHER;
}
else
#else
{
block_input ();
char *str = XKeysymToString (keysym);
if (!str)
{
unblock_input ();
goto XI_OTHER;
}
nbytes = strlen (str) + 1;
copy_bufptr = alloca (nbytes);
strcpy (copy_bufptr, str);
unblock_input ();
}
#endif
#ifdef HAVE_XKB
if (overflow)
{
overflow = 0;
copy_bufptr = alloca (copy_bufsiz + overflow);
keysym = sym;
if (!(nbytes = XkbTranslateKeySym (dpyinfo->display, &sym,
state & ~mods_rtrn, copy_bufptr,
copy_bufsiz + overflow, &overflow)))
goto XI_OTHER;
if (overflow)
goto XI_OTHER;
}
#endif
#ifdef HAVE_X_I18N
}
#endif
/* First deal with keysyms which have defined
translations to characters. */
if (keysym >= 32 && keysym < 128)
@ -10466,49 +10564,6 @@ handle_one_xevent (struct x_display_info *dpyinfo,
goto xi_done_keysym;
}
#ifdef HAVE_XKB
int overflow = 0;
KeySym sym = keysym;
if (dpyinfo->xkb_desc)
{
if (!(nbytes = XkbTranslateKeySym (dpyinfo->display, &sym,
state & ~mods_rtrn, copy_bufptr,
copy_bufsiz, &overflow)))
goto XI_OTHER;
}
else
#else
{
block_input ();
char *str = XKeysymToString (keysym);
if (!str)
{
unblock_input ();
goto XI_OTHER;
}
nbytes = strlen (str) + 1;
copy_bufptr = alloca (nbytes);
strcpy (copy_bufptr, str);
unblock_input ();
}
#endif
#ifdef HAVE_XKB
if (overflow)
{
overflow = 0;
copy_bufptr = alloca (copy_bufsiz + overflow);
keysym = sym;
if (!(nbytes = XkbTranslateKeySym (dpyinfo->display, &sym,
state & ~mods_rtrn, copy_bufptr,
copy_bufsiz + overflow, &overflow)))
goto XI_OTHER;
if (overflow)
goto XI_OTHER;
}
#endif
for (i = 0, nchars = 0; i < nbytes; i++)
{
if (ASCII_CHAR_P (copy_bufptr[i]))
@ -10574,6 +10629,10 @@ handle_one_xevent (struct x_display_info *dpyinfo,
goto XI_OTHER;
}
xi_done_keysym:
#ifdef HAVE_X_I18N
if (FRAME_XIC (f) && (FRAME_XIC_STYLE (f) & XIMStatusArea))
xic_set_statusarea (f);
#endif
if (must_free_data)
XFreeEventData (dpyinfo->display, &event->xcookie);
goto done_keysym;