def Loop(self):
"""Main program loop.
Looks for any new event in the main progrem Queue and processes them.
"""
while True:
event = self._events_queue.get()
if event:
try:
self._HandleEvent(event)
except Exception as e: #pylint: disable=broad-except
logging.error(e)
err_event = events.ErrorEvent('{0!s}'.format(e))
self.PushEvent(err_event)
time.sleep(0.05)
self.ui.Update()
def ReadTag(self, tag):
"""Reads a tag from the NFC reader.
Args:
tag(nfc.tag): the tag object to read.
Returns:
bytearray: True if the read operation was successful,
or None if it wasn't.
"""
if isinstance(tag, nfc.tag.tt2.Type2Tag):
uid = NFC215.ReadUIDFromTag(tag)
try:
if uid:
event = NFCEvent(uid=uid)
self._AddToQueue(event)
return self._should_beep
except nfc.tag.tt2.Type2TagCommandError as e:
event = events.ErrorEvent('{0!s}'.format(e))
return False
def _HandleEvent(self, event):
"""Does something with an Event.
Args:
event(BaseEvent): the event to handle.
Raises:
BeerLogError: if an error is detected when handling the event.
"""
# TODO : have a UI class of events, and let the ui object deal with them
self.ResetTimers()
if event.type == constants.EVENTTYPES.NFCSCANNED:
name = self.db.GetNameFromHexID(event.uid)
if not name:
raise errors.BeerLogError(
'Could not find the corresponding name for tag id "{0!s}" '
'in "{1:s}"'.format(event.uid, self._known_tags))
character = self.db.GetCharacterFromHexID(event.uid)
self.db.AddEntry(event.uid, self._last_taken_picture)
self.ui.machine.scan(who=name, character=character)
self.AddDelayedEvent(events.UIEvent(constants.EVENTTYPES.ESCAPE),
2)
elif event.type == constants.EVENTTYPES.KEYUP:
self.ui.machine.up()
elif event.type == constants.EVENTTYPES.KEYDOWN:
self.ui.machine.down()
elif event.type == constants.EVENTTYPES.ESCAPE:
self.ui.machine.back()
elif event.type == constants.EVENTTYPES.KEYMENU1:
self.ui.machine.back()
elif event.type == constants.EVENTTYPES.ERROR:
self.ui.machine.error(error=str(event))
else:
err_msg = 'Unknown Event: {0!s}'.format(event)
print(err_msg)
self.PushEvent(events.ErrorEvent(err_msg))
#self.AddDelayedEvent(UIEvent(constants.EVENTTYPES.ESCAPE), 3)
self.db.Close()