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touchpad: return normalized deltas from tp_get_delta

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All callers except the tap motion threshold call
tp_get_delta() followed by tp_filter_motion() - the latter normalized it
before calling into the accleration code.

Move the normalization into tp_get_delta() so we don't deal with
device-specific coordinates but normalized deltas instead.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Peter Hutterer 2015-03-05 16:48:47 +10:00
parent 37af67c666
commit 3f7efc134e
2 changed files with 10 additions and 2 deletions
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5
src/evdev-mt-touchpad.c
View file

@ -64,8 +64,8 @@ tp_filter_motion(struct tp_dispatch *tp,
{
struct motion_params motion;
motion.dx = *dx * tp->accel.x_scale_coeff;
motion.dy = *dy * tp->accel.y_scale_coeff;
motion.dx = *dx;
motion.dy = *dy;
if (dx_unaccel)
*dx_unaccel = motion.dx;
@ -269,6 +269,7 @@ tp_get_delta(struct tp_touch *t, double *dx, double *dy)
tp_motion_history_offset(t, 1)->y,
tp_motion_history_offset(t, 2)->y,
tp_motion_history_offset(t, 3)->y);
tp_normalize_delta(t->tp, dx, dy);
}
static void

7
src/evdev-mt-touchpad.h
View file

@ -283,6 +283,13 @@ struct tp_dispatch {
#define tp_for_each_touch(_tp, _t) \
for (unsigned int _i = 0; _i < (_tp)->ntouches && (_t = &(_tp)->touches[_i]); _i++)
static inline void
tp_normalize_delta(struct tp_dispatch *tp, double *dx, double *dy)
{
*dx = *dx * tp->accel.x_scale_coeff;
*dy = *dy * tp->accel.y_scale_coeff;
}
void
tp_get_delta(struct tp_touch *t, double *dx, double *dy);