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The original grail uses an internal touch framework and exports some
touch information as extended attributes to gesture events. This was
never quite the intention, but rather to expose gestures and touches
on a similar footing, such that grail can be input agnostic. This
patch starts off by replacing the internal touch framework with the
utouch-frame engine.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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The current grail operates via callbacks. In order to make grail work
as a pipe, where input and output can be controlled externally, add
the missing event queue for gestures, and align the code to simplify a
switch.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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The existing kernel MT devices together use a handful of different
pointer emulation strategies, each with its own subtlety. This creates
a problem for grail, which needs to rebuild pointer emulation during
gesture recognition; relying on the correct pointer information to be
available at the right time becomes almost impossible.
This patch implements a common pointer emulation model for grail,
following a strategy recently discussed on LKML. This resolves the
problems stemming from different emulation strategies, and results
in a common pointer emulation experience for all devices.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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Separate out reporting of the touch state, such that reporting
can be deferred. Does not introduce any logic changes.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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This bug was introduced in v1.0.11. Only report events when
the pointer position is actually changing.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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The current code lets abs events through during one-finger drags,
and tapping does not work properly due to abs events not always
being present during taps. Track the pointer position and emit abs
events only if no gestures are in effect, and only if not explicitly
filtered.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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