Qt5 report input method language

This is in the spirit of tdf#108151, based on the information Qt
provides for the IM setting. I don't know how correct it is,
especially looking at Caolans comment 3 in that bug report
regarding the assumed validity of GtkIMContextInfo. OTOH it seems
to work well enough for my simple tests.

Some BG info: while the QInputMethod object is a global one, it's
"bound" to the focused window. So you'll get change events, when
you change the input window, with the correct IM settings for the
new one, be it a real window or just the menu bar.

To prevent unneeded flushes of buffers and language lookup, this
caches the current IM language of a window.

The language is not affected just by changing keyboard mappings,
which the bug reporter requested! It just works with a configured
input method, like fcitx or ibus (which can have keyboard mappings
too, which work correctly).

Change-Id: Ia9133edf4d1ce77d29adbfe57c180db15db0a560
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/106354
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

0 files changed, 0 insertions, 0 deletions