From 37b99c2ae3dc66f72e64824acc6b3e9d4de278b8 Mon Sep 17 00:00:00 2001 From: Peter Hutterer Date: Thu, 12 Jan 2017 15:01:20 +1000 Subject: [PATCH] Drop now obsolete patch --- ...e-the-last-two-coordinates-for-delta.patch | 62 ------------------- 1 file changed, 62 deletions(-) delete mode 100644 0001-touchpad-only-use-the-last-two-coordinates-for-delta.patch diff --git a/0001-touchpad-only-use-the-last-two-coordinates-for-delta.patch b/0001-touchpad-only-use-the-last-two-coordinates-for-delta.patch deleted file mode 100644 index 5116234..0000000 --- a/0001-touchpad-only-use-the-last-two-coordinates-for-delta.patch +++ /dev/null @@ -1,62 +0,0 @@ -From e288c3045d0c582ee19e85cbe11529dc374d4bbf Mon Sep 17 00:00:00 2001 -From: Peter Hutterer -Date: Mon, 21 Nov 2016 08:39:47 +1000 -Subject: [PATCH libinput] touchpad: only use the last two coordinates for - delta calculation - -Taking the last 4 points means factoring in a coordinate that may be more than -40ms in the past - or even more when the finger moves slowly and we don't get -events for a while. This makes the pointer more sluggish and slower to catch up -with what the finger is actually doing. - -We already have the motion hysteresis as a separate item to prevent jumps (and -thus adds some delay to the movement), the calculation over time doesn't -provide enough benefit to justify the sluggish pointer. - -Signed-off-by: Peter Hutterer ---- - src/evdev-mt-touchpad.c | 20 +++++--------------- - 1 file changed, 5 insertions(+), 15 deletions(-) - -diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c -index d72cb19..7b8514c 100644 ---- a/src/evdev-mt-touchpad.c -+++ b/src/evdev-mt-touchpad.c -@@ -262,29 +262,19 @@ tp_end_sequence(struct tp_dispatch *tp, struct tp_touch *t, uint64_t time) - tp_end_touch(tp, t, time); - } - --static double --tp_estimate_delta(int x0, int x1, int x2, int x3) --{ -- return (x0 + x1 - x2 - x3) / 4.0; --} -- - struct normalized_coords - tp_get_delta(struct tp_touch *t) - { - struct device_float_coords delta; - const struct normalized_coords zero = { 0.0, 0.0 }; - -- if (t->history.count < TOUCHPAD_MIN_SAMPLES) -+ if (t->history.count <= 1) - return zero; - -- delta.x = tp_estimate_delta(tp_motion_history_offset(t, 0)->x, -- tp_motion_history_offset(t, 1)->x, -- tp_motion_history_offset(t, 2)->x, -- tp_motion_history_offset(t, 3)->x); -- delta.y = tp_estimate_delta(tp_motion_history_offset(t, 0)->y, -- tp_motion_history_offset(t, 1)->y, -- tp_motion_history_offset(t, 2)->y, -- tp_motion_history_offset(t, 3)->y); -+ delta.x = tp_motion_history_offset(t, 0)->x - -+ tp_motion_history_offset(t, 1)->x; -+ delta.y = tp_motion_history_offset(t, 0)->y - -+ tp_motion_history_offset(t, 1)->y; - - return tp_normalize_delta(t->tp, delta); - } --- -2.9.3 -