__init__
The constructor of the setting state sets the background, and sets up to track the changes in consequitive touches. It allocates the single text area (for the alarm time) and sets up buttons:
- alarm on,
- return to the time state, and
- alarm off.
You'll notice that there are two other "buttons" or maybe "touch areas" would be a better term:
- the hours value, and
- the minutes value.
These two are the entire height of the display, maximizing the swiping area.
def __init__(self):
super().__init__()
self.previous_touch = None
self.background = 'settings_background.bmp'
text_area_configs = [dict(x=88, y=120, size=5, color=0xFFFFFF, font=time_font)]
self.text_areas = create_text_areas(text_area_configs)
self.buttons = [dict(left=0, top=30, right=80, bottom=93), # on
dict(left=0, top=98, right=80, bottom=152), # return
dict(left=0, top=155, right=80, bottom=220), # off
dict(left=100, top=0, right=200, bottom = 240), # hours
dict(left=220, top=0, right=320, bottom = 240)] # minutes
touch
Setting is interesting in that it doesn't have it's own tick method. This is because all of its functionality is driven by user interaction. Hence the touch method does all the work.
If there is a touch, each button on the left side of the display (on, return, and off, from top to bottom) are check and the appropriate action is taken.
If none of those were touched, and if the alarm is enabled, up and down swipes over the hours or minutes values are checked for. This is where the previous_touch variable comes in. It gets updated after checking for the swipe.
The final step in processing a touch is to update the display. If there wasn't a touch (t is None), previous_touch is reset to None.
def touch(self, t, touched):
global alarm_hour, alarm_minute, alarm_enabled
if t:
if touch_in_button(t, self.buttons[0]): # on
logger.debug('ON touched')
alarm_enabled = True
self.text_areas[0].text = '%02d:%02d' % (alarm_hour, alarm_minute)
elif touch_in_button(t, self.buttons[1]): # return
logger.debug('RETURN touched')
change_to_state('time')
elif touch_in_button(t, self.buttons[2]): # off
logger.debug('OFF touched')
alarm_enabled = False
self.text_areas[0].text = ' '
elif alarm_enabled:
if not self.previous_touch:
self.previous_touch = t
else:
if touch_in_button(t, self.buttons[3]): # HOURS
logger.debug('HOURS touched')
if t[1] < (self.previous_touch[1] - 5): # moving up
alarm_hour = (alarm_hour + 1) % 24
logger.debug('Alarm hour now: %d', alarm_hour)
elif t[1] > (self.previous_touch[1] + 5): # moving down
alarm_hour = (alarm_hour - 1) % 24
logger.debug('Alarm hour now: %d', alarm_hour)
self.text_areas[0].text = '%02d:%02d' % (alarm_hour, alarm_minute)
elif touch_in_button(t, self.buttons[4]): # MINUTES
logger.debug('MINUTES touched')
if t[1] < (self.previous_touch[1] - 5): # moving up
alarm_minute = (alarm_minute + 1) % 60
logger.debug('Alarm minute now: %d', alarm_minute)
elif t[1] > (self.previous_touch[1] + 5): # moving down
alarm_minute = (alarm_minute - 1) % 60
logger.debug('Alarm minute now: %d', alarm_minute)
self.text_areas[0].text = '%02d:%02d' % (alarm_hour, alarm_minute)
self.previous_touch = t
board.DISPLAY.refresh_soon()
board.DISPLAY.wait_for_frame()
else:
self.previous_touch = None
return bool(t)
enter
This sets the background, adds the text area to display the alarm time, and sets it either to spaces or the alarm time depending on if the alarm is enabled.
def enter(self):
global snooze_time
snooze_time = None
pyportal.set_background(self.background)
for ta in self.text_areas:
pyportal.splash.append(ta)
if alarm_enabled:
self.text_areas[0].text = '%02d:%02d' % (alarm_hour, alarm_minute) # set time textarea
else:
self.text_areas[0].text = ' '
