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In preparation of adding several additional finger bit registers,
remove the redundant bit-counting variables and introduce fast
bit-traversal functions instead.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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Output parsing memory values, switched off by default.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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The current code determines the moving, scrolling and swiping gestures
based on the number of fingers on the trackpad, including the resting
fingers at the bottom of the pad. With information about all fingers
at hand, it is possible to determine which fingers on the trackpad are
participating in a moving gesture. This patch computes the movement
based on the pointing fingers only, and uses that number to determine
the type of moving gesture.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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Multi-finger clicks and taps are goverened by the number of pointing
fingers on the trackpad. This number can be different from the actual
number of fingers on the trackpad. For instance, a finger resting at
the bottom of an integrated button, or a finger that accidentally
touches the pad during a press, are not pointing fingers. This patch
introduces extract_pointers(), which computes the number of pointing
fingers on the trackpad, and uses that number to determine the logical
button state.
[rydberg@euromail.se: various cleanups]
Signed-off-by: Arturo Castro <arturo@openframeworks.cc>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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The current code responds to finger movement immediately after
a finger has been placed on the trackpad, even if the touch is
accidental. This patch delays the effect of the finger by 70 ms,
resulting in fewer accidental movements.
Signed-off-by: Arturo Castro <arturo@openframeworks.cc>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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The button extraction currently modifies the MTState buttons,
upsetting the semantics in a bad way. This patch adds the logical
button state to the Memory structure, and uses it to compute the
logical button change.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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Add the Memory structure to hold the multitouch parsing state.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
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