This input handler plugin provides an alternative text prediction solution to the Xt9 engine shipped by the Jolla. It could be useful if you are using community supported language pack or if you have a ported device.
The predicted words are generated by the presage library. The presage predictions coming from various plugins:
- ngram: this plugin uses a database generated from text corpuses. Basically it tries to match your typed word with sentence fragments in the database and offers the words from those segments.
- user-ngram: this plugin works the same manner as the ngram, but it's database is expanded continously as you type.
- hunspell: it tries to spellcheck the currently typed word with hunspell and if it found to be mistyped it will suggest the correct version as well
The released build of this plugin (and keyboard layouts utilizing it) can be installed from Sailfish Chum repositories:
# enable chum repository
# search chum repos
zypper se keyboard-presage-
# install
zypper in keyboard-presage-en_US
or OpenRepos:
- https://openrepos.net/content/sailfishkeyboard/keyboard-presage-enus
- https://openrepos.net/content/sailfishkeyboard/maliit-plugin-presage
Range of keyboards are available.
If you try to build this package on a vanilia Mer build machine you are going to get some similar errors:
No provider of 'libmarisa-devel' found.
No provider of 'libpresage-devel' found.
error: Failed build dependencies:
hunspell-devel >= 1.5.1 is needed by maliit-plugin-presage-1.0-7.armv7hl
libmarisa-devel is needed by maliit-plugin-presage-1.0-7.armv7hl
libpresage-devel is needed by maliit-plugin-presage-1.0-7.armv7hl
pkgconfig(sqlite3) is needed by maliit-plugin-presage-1.0-7.armv7hl
To overcome this you will need to add Sailfish Chum repositories to your target.
Login to your Mer VM with the following command:
ssh -p 2222 -i /opt/SailfishOS/vmshare/ssh/private_keys/engine/mersdk mersdk@localhost
Run the following commands to register Chum OBS repo and install the dependencies (replace with the corresponding SFOS release):
sb2 -t SailfishOS-4.2.0.21-aarch64 -m sdk-install -R zypper ar -f https://repo.sailfishos.org/obs/sailfishos:/chum/4.2.0.21_aarch64/ chum_obs
sb2 -t SailfishOS-4.2.0.21-aarch64 -m sdk-install -R zypper ref
sb2 -t SailfishOS-4.2.0.21-aarch64 -m sdk-install -R zypper in libpresage-devel libmarisa-devel
Now you can build and deploy the package from the Sailfish OS SDK's QtCreator
To debug a keyboard plugin you should run on your device:
pkill maliit-server; MALIIT_DEBUG=enabled maliit-server
(Console output is controlled by the MALIIT_DEBUG variable) If you know how to hook this through the GDB in the SailfishOS SDK let me know.
Matteo Vescovi who developed the Presage: http://presage.sourceforge.net/
Hanhsuan's predictor helped me at the beginnging a lot https://github.com/hanhsuan/jolla-chewing
Pekka Vuorela for the debugging tips