I'm using cs1graphics module. I'm like really stuck as to what do next. What I'm attempting to do is create a handler that counts the number of clicks on the canvas and when the exit button is clicked it exits the canvas. I originally added the exit canvas outside of the class before I realized that my class had no attribute to the exit button so I added the exit button in the class but it doesnt come out, nor does my program count the clicks. I've read countlessly on the topic of event handling and I am seriously just stuck. I really don't need anyone to do it for me, I just need to understand what it is that I'm doing wrong. Its driving me crazy!
from cs1graphics import*
class MouseHandler(EventHandler):
def __init__ (self, textObj):
EventHandler.__init__(self)
self._text = textObj
self._count = 0
self._text.setMessage(str(self._count))
def handle(self, event):
if event.getDescription() == 'mouse click':
self._counter >= 1
self._text.setMessage(str(self._count))
class ExitButtonHandler(EventHandler):
def __init__(self, message='', centerPt=None):
EventHandler.__init__(self)
self._exitButton=Rectangle(60, 30)
self._exitButton.setFillColor('grey')
self._message='Exit'
self.centerPt=Point(600,555)
def handle(self, event):
if event.getDescription() == 'mouse click':
if event.getTrigger()in self._exitButton:
exit()
def main():
paper=Canvas(700, 600, 'white', 'Number of clicks')
text1=Text('Times clicked:', 12, Point(140, 550))
paper.add(text1)
text2=Text('', 12, Point(300, 550))
paper.add(text2)
counter=MouseHandler(text2)
paper.addHandler(counter)
exitEvent = ExitButtonHandler()
paper.addHandler(exitEvent)
main()
