109 lines
4.4 KiB
Python
109 lines
4.4 KiB
Python
# -*- coding: utf-8 -*-
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# Support for menu button press tracking
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#
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# Copyright (C) 2018 Janar Sööt <janar.soot@gmail.com>
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# Copyright (C) 2020 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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LONG_PRESS_DURATION = 0.800
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TIMER_DELAY = .200
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class MenuKeys:
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def __init__(self, config, callback):
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self.printer = config.get_printer()
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self.reactor = self.printer.get_reactor()
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self.callback = callback
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buttons = self.printer.load_object(config, "buttons")
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# Register rotary encoder
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encoder_pins = config.get('encoder_pins', None)
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encoder_steps_per_detent = config.getchoice('encoder_steps_per_detent',
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{2: 2, 4: 4}, 4)
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if encoder_pins is not None:
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try:
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pin1, pin2 = encoder_pins.split(',')
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except:
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raise config.error("Unable to parse encoder_pins")
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buttons.register_rotary_encoder(pin1.strip(), pin2.strip(),
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self.encoder_cw_callback,
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self.encoder_ccw_callback,
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encoder_steps_per_detent)
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self.encoder_fast_rate = config.getfloat('encoder_fast_rate',
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.030, above=0.)
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self.last_encoder_cw_eventtime = 0
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self.last_encoder_ccw_eventtime = 0
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# Register click button
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self.is_short_click = False
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self.click_timer = self.reactor.register_timer(self.long_click_event)
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self.register_button(config, 'click_pin', self.click_callback, False)
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# Register other buttons
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self.register_button(config, 'back_pin', self.back_callback)
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self.register_button(config, 'up_pin', self.up_callback)
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self.register_button(config, 'down_pin', self.down_callback)
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self.register_button(config, 'kill_pin', self.kill_callback)
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def register_button(self, config, name, callback, push_only=True):
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pin = config.get(name, None)
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if pin is None:
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return
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buttons = self.printer.lookup_object("buttons")
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if config.get('analog_range_' + name, None) is None:
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if push_only:
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buttons.register_button_push(pin, callback)
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else:
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buttons.register_buttons([pin], callback)
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return
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amin, amax = config.getfloatlist('analog_range_' + name, count=2)
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pullup = config.getfloat('analog_pullup_resistor', 4700., above=0.)
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if push_only:
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buttons.register_adc_button_push(pin, amin, amax, pullup, callback)
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else:
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buttons.register_adc_button(pin, amin, amax, pullup, callback)
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# Rotary encoder callbacks
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def encoder_cw_callback(self, eventtime):
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fast_rate = ((eventtime - self.last_encoder_cw_eventtime)
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<= self.encoder_fast_rate)
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self.last_encoder_cw_eventtime = eventtime
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if fast_rate:
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self.callback('fast_up', eventtime)
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else:
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self.callback('up', eventtime)
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def encoder_ccw_callback(self, eventtime):
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fast_rate = ((eventtime - self.last_encoder_ccw_eventtime)
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<= self.encoder_fast_rate)
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self.last_encoder_ccw_eventtime = eventtime
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if fast_rate:
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self.callback('fast_down', eventtime)
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else:
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self.callback('down', eventtime)
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# Click handling
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def long_click_event(self, eventtime):
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self.is_short_click = False
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self.callback('long_click', eventtime)
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return self.reactor.NEVER
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def click_callback(self, eventtime, state):
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if state:
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self.is_short_click = True
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self.reactor.update_timer(self.click_timer,
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eventtime + LONG_PRESS_DURATION)
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elif self.is_short_click:
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self.reactor.update_timer(self.click_timer, self.reactor.NEVER)
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self.callback('click', eventtime)
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# Other button callbacks
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def back_callback(self, eventtime):
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self.callback('back', eventtime)
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def up_callback(self, eventtime):
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self.callback('up', eventtime)
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def down_callback(self, eventtime):
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self.callback('down', eventtime)
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def kill_callback(self, eventtime):
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self.printer.invoke_shutdown("Shutdown due to kill button!")
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