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    SubjectRe: [PATCH] input: Add a detailed multi-touch finger data report protocol

    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 -> driver -> X events -> toolkit
    events -> application?

    For instance does the 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 as well as the
    toolkits like GTK+ and Qt. It could be a long implementation process... :(


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