[Bug 373767] Re: Incorrect keyboard mapping

[Mathias Weyland]

This is because of the way tiemu handles key press and releases. The
mapping for hardware keycodes is hardcoded in src/gui/calc/pckeys.h.
Unfortunately, this mapping may differ. That's why certain keys are not
working. Furthermore, on my swiss german keyboard, y and z is swapped.
Unfortunately, there is no easy solution for this. However, I came up
with the following fix:

1.) Use keyvalues instead of hardware keycodes
2.) Add more mappings for instance for the decimal point and the comma

My changes are available in my PPA at https://launchpad.net/~launchpad-
weyland/+archive/ppa

To solve the mapping problem, it would only be necessary to implement
1.) in theory. However, I found it extremely annoying not to be able to
enter parenthesis, decimal points, pipes etc. with my keyboard. That's
why I also implemented 2.). Unfortunately, some important characters
like + and * are mapped on top of the numbers on my keyboard and have to
be used together with the shift key. This interfers with the way how the
calculators handle that key, that's why I disabled the right shift key.
Thus, I can use the left shift key for capital letters and the right one
for the operators. I also mapped the "second" button to the super
("windows") key because the menu key seems to be used for the context
menu.

My changes are based on the current tiemu version 3. Version 2 in ubuntu
is seriously outdated and should be replaced anyway (see LP 221332). The
PPA may be of use to anyone who needs proper keyboard mappings and for
those who may want to adopt my changes. However, the patch needs a
cleanup! First, It's going to break any build except for linux, and
second, some variables have to be renamed (hardware_keycode is just
misleading if we're not dealing with keycodes anymore) and some more
mappings have to be added. I'm only using OS 2 for TI-89, so I don't
know whether I introduced any bugs for other ROMs. I'm willing to
improve the patch if some maintainers decide they want to adopt it, but
I have not done so yet because it's working good enough for me.

regards

Matt

-- 
Incorrect keyboard mapping
https://bugs.launchpad.net/bugs/373767
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