eye_hide.py

import time

from talon import ctrl, tap, ui, cron
from eye_mouse import tracker, mouse, Point2d

class EyeHide:
    def __init__(self):
        self.job = None
        self.show = False
        tracker.register('post:gaze', self.on_gaze)
        ui.register('win_focus', self.on_focus)
        ui.register('app_activate', self.on_focus)

    def on_focus(self, win):
        ctrl.cursor_visible(self.show)

    def on_gaze(self, b):
        if mouse.last_ctrl and mouse.break_force > 6:
            self.cursor(True)
        else:
            try:
                # hides after every eye jump until a head movement
                origin = mouse.origin
                frames = [xy for xy in mouse.xy_hist if xy.ts >= origin.ts]
                m = max([(origin - xy).len() for xy in frames])
                self.cursor(m > 5)

                return
                # this variant hides the cursor on every eye jump until it settles (can tweak radius up to 200)
                p, origin, radius = mouse.zone1
                self.cursor(radius > 20)
            except Exception:
                self.cursor(True)

    def cursor(self, show):
        now = time.time()
        if show:
            self.last_show = now
        elif self.show and now - self.last_show < 0.5:
            return

        if show != self.show:
            self.job = None
            ctrl.cursor_visible(show)
            self.show = show

hide = EyeHide()