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Copy pathbookExercises.py
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125 lines (100 loc) · 2.76 KB
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from threading import Thread
import time
import turtle
# Listing 13.1 PG 425
class EventHandler(Thread):
def __init__(self):
super().__init__()
self.queue = []
self.eventKeeper = {}
def addEvent(self, eventName):
self.queue.append(eventName)
def registerCallback(self, event, func):
self.eventKeeper[event] = func
def run(self):
while (True):
if len(self.queue) > 0:
nextEvent = self.queue.pop(0)
callback = self.eventKeeper[nextEvent]
callback()
else:
time.sleep(1)
# SESSION 13.1
def myMouse():
print('Oh no the mouse was clicked.')
#
def myKey():
print('A key has been pressed.')
#
# eh = EventHandler()
# eh.registerCallback('key', myKey())
# eh.registerCallback('mouse', myMouse())
# eh.addEvent('mouse')
# eh.addEvent('key')
# eh.addEvent('mouse')
# SESSION 13.2
# eh = EventHandler()
# eh.addEvent('mouse')
# eh.addEvent('key')
# eh.addEvent('mouse')
# eh.registerCallback('key', myKey)
# eh.registerCallback('mouse', myMouse)
# eh.start()
class Etch(object):
def __init__(self):
self.myT = turtle.Turtle()
self.mySCreen = turtle.Screen()
self.myT.color('blue')
self.myT.pensize(2)
self.myT.speed(0)
self.distance = 5
self.turn = 10
self.mySCreen.onkey(self.fwd, 'Up')
self.mySCreen.onkey(self.bkwd, 'Down')
self.mySCreen.onkey(self.left, 'Left')
self.mySCreen.onkey(self.right, 'Right')
self.mySCreen.onkey(self.quit, 'q')
self.mySCreen.listen()
def fwd(self):
self.myT.forward(self.distance)
def bkwd(self):
self.myT.backward(self.distance)
def left(self):
self.myT.left(self.turn)
def right(self):
self.myT.right(self.turn)
def quit(self):
self.mySCreen.bye()
def main(self):
turtle.mainloop()
from turtle import Turtle
class ETCH(Turtle):
def __init__(self):
super().__init__()
self.screen = self.getscreen()
self.color = 'blue'
self.pensize(2)
self.speed(0)
self.distance = 5
self.turn = 10
self.screen.onkey(self.fwd, 'Up')
self.screen.onkey(self.bkwd, 'Down')
self.screen.onkey(self.left, 'Left')
self.screen.onkey(self.right, 'Right')
self.screen.onkey(self.quit, 'q')
self.screen.listen()
self.main()
def fwd(self):
self.forward(self.distance)
def bkwd(self):
self.backward(self.distance)
def left5(self):
self.left(self.turn)
def right5(self):
self.right(self.turn)
def quit(self):
self.screen.bye()
def main(self):
mainloop()
draw = Etch()
draw.main()