Messages in this thread |  | | From | Holger Schurig <> | Subject | Re: cell-phone like keyboard driver anywhere? | Date | Fri, 23 Aug 2002 12:05:28 +0200 |
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> The problems that need to be resolved with the kernel approach. Lets > look at the '1-1-1' case: > > 1. Do you queue the characters "a" "^h" "b" "^h" "c" ?
There is no '1-1-1' case, the case is '1-1-1-pause'. Only after the pause would the software (may it be kernel or user-space) know that and what character has been meant. At the '1-1-1' state the user might press again a 1 and then wait, then this might be an '1-pause' case.
The idea is that in the case of '1-1-1-pause' the driver queues exactly one character, e.g. the "c".
> 2. How do you handle the case where the app is waiting for one key press > only, but the user hits '1' three times?
See 1. The app doesn't see that this key has been hit three times.
> 3. what if the app doesn't want to accept another character into (say) > a text field? The effect of "a" "^h" "b" will always replace the last > character.
When the driver would send Backspaces, then yes. Otherwise not.
So we both agree that sending backspaces from a cell-phone-like keyboard driver is a bad thing :-)
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