Here's my Crazy Idea Of The Day:
The question was asked a few times, whether there are keys
reserved for local customization purposes. There are none.
But we have some completely unused shift levels. The X window
system supports 8 modifiers (usually called shift, ctrl, alt,
capslock, meta, super, hyper, and-another-one). All of them
can be combined. You can have Super-Meta-Ctrl-Shift-Alt-q.
But this isn't only hard to type in for those with only
10 fingers, it's also not supported everywhere (MS Windows?).
What we could do, though, is to "invent" a new modifier level
for local use. One that works everywhere. By just redefining
a key that is bigger than the others and easy to hit, just
like the other modifiers ... umm ... except alt, altgr)
Tadaaa: The TAB modifier! :-)
With the attached simple script the TAB key becomes a modifier
that shifts all key codes up by adding 1000 to them. So, if you
press TAB-a, you get the <key n="1098"> definition triggered.
This works also in combination with regular modifiers Shift-Tab-a,
etc. (Except that Shit-Tab-a only triggers the <mod-shift> part
of "A", not "A" itself. Could easily be changed, but that's left
as an exercise to the student.)
m.
var local = 0;
var active = {};
_setlistener("/devices/status/keyboard/event", func {
var event = cmdarg();
event.getNode("key").setValue(handle_key_event(event));
});
var handle_key_event = func(e) {
var key = e.getNode("key").getValue();
var pressed = e.getNode("pressed").getValue();
if (key == `\t`) {
local = pressed;
return 0;
} elsif (local) {
active[key] = e.getNode("modifier").getValue();
return key + 1000;
} elsif (!pressed and contains(active, key)) {
e.getNode("modifier").setValue(active[key]);
key += 1000;
}
delete(active, key);
return key;
}
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