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# SPDX-License-Identifier: LGPL-3.0-or-later
# Copyright (C) 2020 Wolfgang Ginolas
"""Timer Application
~~~~~~~~~~~~~~~~~~~~
An application to set a vibration in a specified amount of time. Like a kitchen timer.
.. figure:: res/TimerApp.png
:width: 179
Screenshot of the Timer Application
"""
import wasp
import fonts
import time
import widgets
import math
from micropython import const
# 2-bit RLE, generated from res/timer_icon.png, 345 bytes
icon = (
b'\x02'
b'`@'
b'?\xff\r@\xb4I?\x14Q?\rW?\x08[?'
b'\x04_?\x00c<Q\x80\xd0\x83Q:L\x87\x01\x87'
b'L8K\x89\x01\x89K6J\x8b\x01\x8bJ4I\x8d'
b'\x01\x8dI2I\x9dI0I\x83\x01\x97\x01\x83I.'
b'H\x86\x01\x95\x01\x86H-H\xa3H,H\x92\x01\x92'
b'H+G\x92\x03\x92G*G\x92\x05\x92G)G\x92'
b"\x05\x92G(G\x82\x01\x8f\x07\x8f\x01\x82G'G\x83"
b"\x01\x8e\x07\x8e\x01\x83G'F\x93\x07\x93F&G\x93"
b'\x07\x93G%F\x94\x07\x94F%F\x94\x07\x94F%'
b'F\x94\x07\x94F$G\x94\x07\x94G#G\x94\x07\x94'
b'G#G\x94\x07\x94G#F\x95\x07\x95F#F\x81'
b'\x04\x90\x07\x90\x04\x81F#F\x95\x07\x95F#G\x94'
b'\x07\x94G#G\x94\x07\x94G#G\x94\x07\x94G$'
b'F\x94\x07\x94F%F\x94\x07\x94F%F\x94\x07\x94'
b"F%G\x93\x07\x93G%G\x93\x07\x93F'G\x83"
b"\x01\x8e\x07\x8e\x01\x83G'G\x82\x01\x8f\x07\x8f\x01\x82"
b'G(G\x92\x05\x92G)G\x93\x03\x93G*G\xa7'
b'G+H\xa5H,G\xa5G-H\x86\x01\x9cH.'
b'H\x84\x01\x96\x01\x85H0I\x9a\x01\x82I1J\x8d'
b'\x01\x8dJ2K\x8b\x01\x8bK4K\x8a\x01\x89L5'
b'N\x87\x01\x87N5S\x85S5k5k5k5'
b'k5k5k\x1b'
)
_STOPPED = const(0)
_RUNNING = const(1)
_RINGING = const(2)
_BUTTON_Y = const(200)
class TimerApp():
"""Allows the user to set a vibration alarm.
"""
NAME = 'Timer'
ICON = icon
def __init__(self):
"""Initialize the application."""
self.minutes = widgets.Spinner(50, 60, 0, 99, 2)
self.seconds = widgets.Spinner(130, 60, 0, 59, 2)
self.current_alarm = None
self.minutes.value = 10
self.state = _STOPPED
def foreground(self):
"""Activate the application."""
self._draw()
wasp.system.request_event(wasp.EventMask.TOUCH)
wasp.system.request_tick(1000)
def background(self):
"""De-activate the application."""
if self.state == _RINGING:
self.state = _STOPPED
def tick(self, ticks):
"""Notify the application that its periodic tick is due."""
if self.state == _RINGING:
wasp.watch.vibrator.pulse(duty=50, ms=500)
wasp.system.keep_awake()
self._update()
def touch(self, event):
"""Notify the application of a touchscreen touch event."""
if self.state == _RINGING:
mute = wasp.watch.display.mute
mute(True)
self._stop()
mute(False)
elif self.state == _RUNNING:
self._stop()
else: # _STOPPED
if self.minutes.touch(event) or self.seconds.touch(event):
pass
else:
y = event[2]
if y >= _BUTTON_Y:
self._start()
def _start(self):
self.state = _RUNNING
now = wasp.watch.rtc.time()
self.current_alarm = now + self.minutes.value * 60 + self.seconds.value
wasp.system.set_alarm(self.current_alarm, self._alert)
self._draw()
def _stop(self):
self.state = _STOPPED
wasp.system.cancel_alarm(self.current_alarm, self._alert)
self._draw()
def _draw(self):
"""Draw the display from scratch."""
draw = wasp.watch.drawable
draw.fill()
sbar = wasp.system.bar
sbar.clock = True
sbar.draw()
if self.state == _RINGING:
draw.set_font(fonts.sans24)
draw.string(self.NAME, 0, 150, width=240)
draw.blit(icon, 73, 50)
elif self.state == _RUNNING:
self._draw_stop(104, _BUTTON_Y)
draw.string(':', 110, 120-14, width=20)
self._update()
else: # _STOPPED
draw.set_font(fonts.sans28)
draw.string(':', 110, 120-14, width=20)
self.minutes.draw()
self.seconds.draw()
self._draw_play(114, _BUTTON_Y)
def _update(self):
wasp.system.bar.update()
draw = wasp.watch.drawable
if self.state == _RUNNING:
now = wasp.watch.rtc.time()
s = self.current_alarm - now
if s<0:
s = 0
m = str(math.floor(s // 60))
s = str(math.floor(s) % 60)
if len(m) < 2:
m = '0' + m
if len(s) < 2:
s = '0' + s
draw.set_font(fonts.sans28)
draw.string(m, 50, 120-14, width=60)
draw.string(s, 130, 120-14, width=60)
def _draw_play(self, x, y):
draw = wasp.watch.drawable
for i in range(0,20):
draw.fill(0xffff, x+i, y+i, 1, 40 - 2*i)
def _draw_stop(self, x, y):
wasp.watch.drawable.fill(0xffff, x, y, 40, 40)
def _alert(self):
self.state = _RINGING
wasp.system.wake()
wasp.system.switch(self)
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