Messages in this thread | | | Date | Sat, 8 Nov 2008 12:29:02 +0100 | From | Arjan Opmeer <> | Subject | Re: [PATCH] input: Add a detailed multi-touch finger data report protocol |
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Hi Henrik,
On Sat, Nov 08, 2008 at 11:43:32AM +0100, Henrik Rydberg wrote: > > For chips that cannot produce the above events, one simply reports less > data. [...] > The minimum set of data is TOUCH, POSITION_X and POSITION_Y. If touch > pressure information is not given in trackpad dimension units, use a > specific range.
The Elantech touchpad does not seem to be able to report pressure, only finger coordinates.
> I believe all current drivers are able to produce this data.
The Elantech driver is not... :)
> It is designed to bring advanced gestures to the linux desktop.
Certainly. Have you already thought about the rest of the path from driver to application, ie kernel driver -> X.org driver -> X events -> toolkit events -> application?
For instance does the X.org driver interpret the data and emit a zoom or rotate event based on the finger position and movement? As far as I know those event do not exist and would have to be added to X.org as well as the toolkits like GTK+ and Qt. It could be a long implementation process... :(
Arjan
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