ui_manager.py

#! /usr/bin/python3
import time
from button import Button_Manager
from dial import Dial

SHUTDOWN_HOLD_TIME = 3
CALIBRATE_HOLD_TIME = 5

class UI_Manager:
  def __init__(self):
    self.button_manager = Button_Manager([("Jog_push", 27), ("Top", 5), ("Mid", 6), ("Low", 12), ("Shutdown", 26)])

    self.dial = Dial(10, "Jog")
    self.dial.start()

  def __del__(self):
    del(self.button_manager)
    del(self.dial)

  def update(self, receiving_queue:list):
    # Get control events
    dial_direction = self.dial.get_direction()

    ui_events = []
    if dial_direction != 0:
      ui_events.append(["Jog", dial_direction])

    button_events = []
    self.button_manager.update(button_events)

    # Convert button events into ui_events
    for event in button_events:
      if event[0] == "Shutdown" and event[1] > SHUTDOWN_HOLD_TIME:
        # Just overwrite the queue as there's no point in doing anything else
        ui_events = [["Shutdown", 0]]
        self.button_manager.clear("Shutdown")
        break
      elif event[0] == "Jog_push":
        if event[1] > SHUTDOWN_HOLD_TIME:
          # Just overwrite the queue as there's no point in doing anything else
          ui_events = [["Shutdown", 0]]
          self.button_manager.clear("Jog_push")
          break
        else:
          ui_events.append(["Random", 0])
      elif event[0] == "Mid":
        if event[1] > CALIBRATE_HOLD_TIME:
          ui_events.append(["Calibrate", 0])
          self.button_manager.clear("Mid")
        else:
          ui_events.append(["Confirm", 0])
      elif event[0] == "Top":
        ui_events.append(["Volume", 1])
      elif event[0] == "Low":
        ui_events.append(["Volume", -1])

    # Put the button events into the supplied queue (a list)
    receiving_queue.extend(ui_events)

if __name__ == "__main__":
  ui_manager = UI_Manager()
  ui_events = []

  while True:
    ui_manager.update(ui_events)

    while len(ui_events) > 0:
      print(ui_events.pop())

    time.sleep(0.1)