scrollwheel.py

from sys import platform
from config import *
import sys_manager

def processInput(app, input):
    global wheel_position, last_button, last_interaction
    position = input[2]
    button = input[0]
    button_state = input[1]
    if button == 29 and button_state == 0:
        wheel_position = -1
    elif wheel_position == -1:
        wheel_position = position
    elif position % 2 != 0:
        pass
    elif wheel_position <=1 and position > 44:
        onDownPressed()
        wheel_position = position
    elif wheel_position >=44 and position < 1:
        onUpPressed()
        wheel_position = position
    elif abs(wheel_position - position) > 6:
        wheel_position = -1
    elif wheel_position > position:
        onDownPressed()
        wheel_position = position
    elif wheel_position < position:
        onUpPressed()
        wheel_position = position
    
    if button_state == 0:
        last_button = -1
    elif button == last_button:
        pass
    elif button == 7:
        onSelectPressed()
        last_button = button
    elif button == 11:
        onBackPressed()
        last_button = button
    elif button == 10:
        onPlayPressed()
        last_button = button
    elif button == 8:
        onNextPressed()
        last_button = button
    elif button == 9:
        onPrevPressed()
        last_button = button
    
    now = time.time()
    if (now - last_interaction > SCREEN_TIMEOUT_SECONDS):
        print("waking")
        sys_manager.screen_wake()
    last_interaction = now

def onKeyPress(event):
    c = event.keycode
    if (c == UP_KEY_CODE):
        onUpPressed()
    elif (c == DOWN_KEY_CODE):
        onDownPressed()
    elif (c == RIGHT_KEY_CODE):
        onSelectPressed()
    elif (c == LEFT_KEY_CODE):
        onBackPressed()
    elif (c == NEXT_KEY_CODE):
        onNextPressed()
    elif (c == PREV_KEY_CODE):
        onPrevPressed()
    elif (c == PLAY_KEY_CODE):
        onPlayPressed()
    else:
        print("unrecognized key: ", c)

def onPlayPressed():
    global page, app
    page.nav_play()
    render(app, page.render())
    
def onSelectPressed():
    global page, app
    if (not page.has_sub_page):
        return
    page.render().unsubscribe()
    page = page.nav_select()
    render(app, page.render())

def onBackPressed():
    global page, app
    previous_page = page.nav_back()
    if (previous_page):
        page.render().unsubscribe()
        page = previous_page
        render(app, page.render())
    
def onNextPressed():
    global page, app
    page.nav_next()
    render(app, page.render())

def onPrevPressed():
    global page, app
    page.nav_prev()
    render(app, page.render())

def onUpPressed():
    global page, app
    page.nav_up()
    render(app, page.render())

def onDownPressed():
    global page, app
    page.nav_down()
    render(app, page.render())