1 files changed, 173 insertions, 0 deletions
diff --git a/wasp/apps/timer.py b/wasp/apps/timer.py
new file mode 100644
index 0000000..f1543f8
--- /dev/null
+++ b/wasp/apps/timer.py
@@ -0,0 +1,173 @@
+# 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, 60, 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)