multitouch.git/src/gestures.c, branch v1.0-alpha2

Add memory debug convenience routines

2010-04-15T04:10:08+00:00

Output parsing memory values, switched off by default. Signed-off-by: Henrik Rydberg

Extract moving fingers

2010-04-15T04:10:08+00:00

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

Extract pointing fingers

2010-04-15T04:10:08+00:00

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 Signed-off-by: Henrik Rydberg

Define swipe gestures

2010-04-15T04:10:08+00:00

Define three-finger vertical and horizontal scroll as vertical and horizontal swipe gestures. Signed-off-by: Henrik Rydberg

Drop movement during gesture decay

2010-04-15T04:10:08+00:00

With this patch, finger motion is divided into two phases; one attack phase where fingers are added to the trackpad, and one decay phase, where fingers leave the trackpad. The decay delay is set considerably larger than the attack delay. The prime effect is to ignore accidental pointer movement right after a two-finger scroll. Signed-off-by: Arturo Castro Signed-off-by: Henrik Rydberg

Add a gesture credits section

2010-04-15T04:10:08+00:00

Signed-off-by: Henrik Rydberg

Delay movement after a finger configuration change

2010-04-15T04:10:07+00:00

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 Signed-off-by: Henrik Rydberg

Keep logical buttons separate from the hardware ones

2010-04-15T04:10:07+00:00

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

Only extract movement from identical finger configurations

2010-04-15T04:10:07+00:00

The current code would extract movement from a rapid change from one finger to the next, resulting in unwanted jumps. This patch first checks that the finger configuration is the same before attempting to extract movement. Signed-off-by: Henrik Rydberg

Reorganize gesture code

2010-04-15T04:10:07+00:00

Break out extraction of movement, buttons and type. Only code traversal, no logical changes. Signed-off-by: Henrik Rydberg