Thread (61 messages) 61 messages, 7 authors, 2010-03-19

Re: [PATCH] hid-ntrig.c Multitouch cleanup and fix

From: Stéphane Chatty <hidden>
Date: 2010-03-09 22:11:50

Le 9 mars 10 à 22:59, Henrik Rydberg a écrit :
On the contrary, the MT protocol is dependent on one of the single- 
touch events
BTN_TOUCH or ABS_PRESSURE to be present in the event stream for  
proper device
identification and for correct handling of zero-finger events. The  
latter
because at least one value (BTN_TOUCH or ABS_PRESSURE) must change  
state to pass
through input filtering when no fingers are present. This is what  
needs
clarification.
Someone has pointed this to me a few weeks ago and tbh I had the  
feeling that this is a bug in the protocol that we failed to notice  
last summer. I agree with you that BTN_TOUCH plugs the hole, but I  
don't find it very satisfactory that we need one protocol to inform  
another.

St.

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