kimju-maemo-2007 at inside
Aug 21, 2007, 8:23 AM
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Decoding virtual keyboard layout definition files (.vkb)
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I wanted to make a couple of small changes to the Finnish virtual
keyboard layout (for example, replace å and Å with / and |), but
couldn't find enough documentation about the virtual keyboard to
do that.
There are only few incomplete documents available about .vkb format,
gen_vkb utility and it's XML input format, and I couldn't find even
a single working example of the XML inputfile for gen_vkb. Let alone
the sources for the current layout files available in the device.
So, I spend couple of hours reverse engineering the .vkb files and
created a decode_vkb perl-script that decodes the binary .vkb files
to XML files that can be edited and then converted back to binary
with gen_vkb.
The script can currently decode all but one of the .vkbs in n800 to
XML files that gen_vkb encodes back to original ones. It's available
from my website along with some documentation:
http://idoru.metadreams.net/~kimju/src/maemo/decode_vkb/
Of the missing features, I really would like to add support for
modifier keys (mostly ctrl), but as the documentation is incomplete
and no official .vkb uses this feature I'm not sure how it is
even supposed to work. Any help would be appreciated and good and
complete documentation for both the XML and binary vkb formats even
more so.
-kimju
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Decoding virtual keyboard layout definition files (.vkb)
