swipe.go RawHistoryFolder

1package headlessinput
2
3import (
4	"time"
5
6	"github.com/bnema/neferwl/internal/ports"
7	"golang.org/x/sys/unix"
8)
9
10// A scripted swipe is a quick flick, as libinput reports one: swipeSteps
11// updates of swipeStep touchpad units, one every swipeEvery.
12const (
13	swipeSteps = 10
14	swipeStep  = 40.0
15	swipeEvery = 8 * time.Millisecond
16)
17
18// swipeEvents is a swipe of fingers fingers toward (dx, dy), a unit
19// direction, starting at the device time start.
20func swipeEvents(fingers int, dx, dy float64, start time.Duration) []ports.InputEvent {
21	evs := []ports.InputEvent{ports.SwipeBegin{Fingers: fingers, Time: start}}
22	at := start
23	for range swipeSteps {
24		at += swipeEvery
25		evs = append(evs, ports.SwipeUpdate{DX: dx * swipeStep, DY: dy * swipeStep, Time: at})
26	}
27	return append(evs, ports.SwipeEnd{Time: at})
28}
29
30// monotonic is CLOCK_MONOTONIC, the clock of libinput's timestamps.
31func monotonic() time.Duration {
32	var ts unix.Timespec
33	_ = unix.ClockGettime(unix.CLOCK_MONOTONIC, &ts)
34	return time.Duration(ts.Nano())
35}