hires-scroll.py

from evdev import UInput, ecodes as e
import time

cap = {
    # we have to have some buttons and X, Y otherwise
    # xfce doesn't recognize it as a mouse
    e.EV_KEY: [e.BTN_LEFT, e.BTN_RIGHT],
    e.EV_REL: [e.REL_X, e.REL_Y, e.REL_WHEEL, e.REL_WHEEL_HI_RES],
}

ui = UInput(cap, name='example-device', version=0x3)

# how big is each hi res scroll event
distance = 5
# the direction
direction = 1

while True:
    # ordinary scroll events
    #ui.write(e.EV_REL, e.REL_WHEEL, direction)
    #ui.syn()
    for n in range(120):
        ui.write(e.EV_REL, e.REL_WHEEL_HI_RES, direction*distance)
        ui.syn()
        time.sleep(0.02)
    #direction = -direction
    time.sleep(2)