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app.py
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app.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# vim:set ts=4 sw=4 et:
from __future__ import print_function
import logging
import threading
import math
import Tkinter as tk
import random
import time
import speech_recognition as sr
# global variable
threadpool = []
appstop = False
class drillengine(object):
'''
Holds logic for drill question and updates
'''
def __init__(self):
self.ui = None
# initialize speech recognition
self.r = sr.Recognizer()
self.m = sr.Microphone()
self.r.pause_threshold = 0.3
self.r.non_speaking_duration = 0.3
def use_ui(self, ui):
self.ui = ui
def stop(self):
"when called, whole app stop"
global appstop
appstop = True
def get_question(self):
"Question generator: single digit multiplication"
a = random.randrange(1,9+1)
b = random.randrange(1,9+1)
question = u"%d × %d" % (a,b)
return question, str(a*b)
def counter(self):
"Update the timer every one second"
logging.info('Counter launched')
while not appstop:
now = time.time()
if not self.paused and now - self.timerstart > self.timerelapsed:
self.timerelapsed = int(math.ceil(now - self.timerstart))
self.ui.curseconds = max(0, self.timerbase - self.timerelapsed)
time.sleep(0.2)
logging.info('Counter stopping')
def run(self):
logging.info('Engine launched')
if self.ui is None:
logging.error("Cannot run without a UI engine specified")
return
self.paused = True
timerthread = threading.Thread(target=self.counter)
timerthread.start()
threadpool.append(timerthread)
while not appstop:
# generate one question, then wait for answer
qtext, answer = self.get_question()
self.ui.question = qtext
self.ui.answer = '?'
# reset timer
self.timerstart = time.time()
self.timerbase = 10 # number of seconds for this
self.timerelapsed = 0 # number of seconds elapsed
self.paused = False
# microphone, recognize, check answer, report
is_correct = None # True/False if answered
while not appstop and time.time() - self.timerstart <= self.timerbase:
with self.m as source:
audio = self.r.listen(source)
logging.debug(audio)
try:
value = self.r.recognize_google(audio, show_all=True)
# relax verification, if any match in recognized data
# format: value = {'final':True, 'alternative':[
# {'confidence':0.49282876, 'transcript':'27'},
# {'transcript': '97'}, {'transcript': 'how to 7'}, ...
# ]}
if not value:
continue
logging.debug(value)
candidates = [z for x in value['alternative'] for z in x['transcript'].split() if z.isdigit()]
logging.debug("-> %s" % candidates)
if not candidates:
continue # no valid answer recorded, retry reading
self.paused = True # stop timer
if answer in candidates:
is_correct = True
self.ui.answer = answer
else:
is_correct = False
self.ui.answer = candidates[0] + ' (wrong!)'
self.ui.anslabel.config(fg='red')
break # proceed to next question
except sr.UnknownValueError:
logging.warning("Didn't catch!")
except sr.RequestError as e:
logging.exception("Google Speech Recognition Service fail: {0}".format(e))
self.ui.quit()
self.ui.sumseconds = self.ui.sumseconds + int(time.time() - self.timerstart)
time.sleep(1) # wait for answer to display
if is_correct == True:
self.ui.ncorrect = self.ui.ncorrect + 1
elif is_correct == False:
self.ui.nwrong = self.ui.nwrong + 1
self.ui.anslabel.config(fg='black')
logging.info('Engine stopped')
class drill(tk.Frame, object): # need new style class for @property
'''
Dumb UI, no logic in it
'''
def __init__(self, root, engine):
tk.Frame.__init__(self, root)
# variables first
self._ncorrect = None
self._nwrong = None
self._sumseconds = None
self._curseconds = None
self._question = None
self._answer = None
# GUI set up
self._engine = engine
self.pack(fill=tk.BOTH, expand=True) # frame fill the whole root
self.bind("<Escape>", self.on_key) # hook up key event
self._create_widgets()
self.focus_set()
self._engine.use_ui(self)
def mainloop(self):
enginethread = threading.Thread(target=self._engine.run)
enginethread.start()
threadpool.append(enginethread)
tk.Frame.mainloop(self)
@property
def ncorrect(self):
return self._ncorrect
@ncorrect.setter
def ncorrect(self, value):
assert(isinstance(value, int))
self._ncorrect = value
if not appstop:
self.correct.set("Correct: %d" % self.ncorrect)
@property
def nwrong(self):
return self._nwrong
@nwrong.setter
def nwrong(self, value):
assert(isinstance(value, int))
self._nwrong = value
if not appstop:
self.wrong.set("Wrong: %d" % self.nwrong)
@property
def sumseconds(self):
return self._sumseconds
@sumseconds.setter
def sumseconds(self, value):
assert(isinstance(value, int))
self._sumseconds = value
secpart = self._sumseconds % 60
minpart = self._sumseconds / 60
if not appstop:
self.sumtime.set("%02d:%02d" % (minpart, secpart))
@property
def curseconds(self):
return self._curseconds
@curseconds.setter
def curseconds(self, value):
assert(isinstance(value, int))
self._curseconds = value
secpart = self._curseconds % 60
minpart = self._curseconds / 60
if not appstop:
self.curtime.set("%02d:%02d" % (minpart, secpart))
@property
def question(self):
return self._question
@question.setter
def question(self, string):
assert(isinstance(string, basestring))
self._question = string
if not appstop:
self.qtext.set(string)
@property
def answer(self):
return self._answer
@answer.setter
def answer(self, string):
assert(isinstance(string, basestring))
self._answer = string
if not appstop:
self.atext.set(string)
def on_key(self, event):
if event.char == '\x1b':
logging.warning("Closing")
self.quit()
def quit(self):
self._engine.stop()
self.winfo_toplevel().destroy()
for thread in threadpool:
thread.join()
def _create_widgets(self):
# grid weights
self.rowconfigure(0, weight=1)
self.rowconfigure(1, weight=1)
self.rowconfigure(2, weight=5)
self.rowconfigure(3, weight=5)
self.rowconfigure(4, weight=3)
self.columnconfigure(0, weight=1)
self.columnconfigure(1, weight=2)
self.columnconfigure(2, weight=1)
# widgets: text on label are editable by a StringVar
self.correct = tk.StringVar()
self.ncorrect = 0
tk.Label(self, textvariable=self.correct, font=('Verdana','16')).grid(column=2, row=0)
self.wrong = tk.StringVar()
self.nwrong = 0
tk.Label(self, textvariable=self.wrong, font=('Verdana','16')).grid(column=2, row=1)
self.sumtime = tk.StringVar()
self.sumseconds = 0
tk.Label(self, textvariable=self.sumtime, font=('Verdana','16')).grid(column=0, row=0)
self.curtime = tk.StringVar()
self.curseconds = 0
tk.Label(self, textvariable=self.curtime, font=('Verdana','16')).grid(column=1, row=4)
self.qtext = tk.StringVar()
self.question = '2 x 2'
tk.Label(self, textvariable=self.qtext, font=('Verdana','48')).grid(column=1, row=2)
self.atext = tk.StringVar()
self.answer = '?'
self.anslabel = tk.Label(self, textvariable=self.atext, font=('Verdana','48'))
self.anslabel.grid(column=1, row=3)
def main():
root = tk.Tk()
root.title("Drill")
root.geometry("800x600+0+0")
root.option_readfile('option.tkinter')
#root.overrideredirect(1) # cannot hide the frame or event fails
engine = drillengine()
app = drill(root, engine)
app.mainloop()
if __name__ == "__main__":
logging.getLogger('').setLevel(logging.DEBUG)
main()