Mouse event - binding

[beta]

Hello All,

I am new with Python, your help would be very appreciated.

I have a simple pinpong applicaiton. I would like make a ball's color
change when mouse is clicked on it.

Here is my sample code:

from Tkinter import *

import string


class Pong(Frame):
def createWidgets(self):
self.QUIT = Button(self, text='QUIT', foreground='red',
   command=self.quit)
self.QUIT.pack(side=LEFT, fill=BOTH)

## The playing field
self.draw = Canvas(self, width="5i", height="5i")

## The speed control for the ball
self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
   from_=-100, to=100)

self.speed.pack(side=BOTTOM, fill=X)

# The ball
#self.ball = self.draw.create_oval("0i", "0i", "0.10i",
"0.10i",
#  fill="red")
self.theBall()
self.x = 0.05
self.y = 0.05
self.velocity_x = 0.3
self.velocity_y = 0.5

self.draw.pack(side=LEFT)
def theBall(self):
 self.ball = self.draw.create_oval("0i", "0i", "0.20i",
"0.20i",
  fill="red")

def moveBall(self, *args):
if (self.x > 5.0) or (self.x < 0.0):
self.velocity_x = -1.0 * self.velocity_x
if (self.y > 5.0) or (self.y < 0.0):
self.velocity_y = -1.0 * self.velocity_y

deltax = (self.velocity_x * self.speed.get() / 100.0)
deltay = (self.velocity_y * self.speed.get() / 100.0)
self.x = self.x + deltax
self.y = self.y + deltay

self.draw.move(self.ball,  "%ri" % deltax, "%ri" % deltay)
self.after(10, self.moveBall)

def __init__(self, master=None):
Frame.__init__(self, master)
Pack.config(self)
self.createWidgets()
self.after(10, self.moveBall)


game = Pong()

game.mainloop()

Thanks,

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Re: Mouse event - binding

[beta]

Dear John,

Thanks for your help. I don't know how to bind the ball only into a
program. Would you mind help me on this? I added the changeColour
function, here is a complete program.

---
from Tkinter import *
import string

class Pong(Frame):
def createWidgets(self):
self.QUIT = Button(self, text='QUIT', foreground='red',
   command=self.quit)
self.QUIT.pack(side=LEFT, fill=BOTH)

## The playing field
self.draw = Canvas(self, width="5i", height="5i")

## The speed control for the ball
self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
   from_=-100, to=100)
self.speed.pack(side=BOTTOM, fill=X)

# The ball
self.ball = self.draw.create_oval("0i", "0i", "0.10i", "0.10i",
fill="red")
self.theBall()
self.x = 0.05
self.y = 0.05
self.velocity_x = 0.3
self.velocity_y = 0.5

self.draw.pack(side=LEFT)

def changeColour(self, event):
x = self.draw.canvasx(event.x)
y = self.draw.canvasy(event.y)
item = self.draw.find_closest(x,y)
currentColour = self.draw.itemcget(item, 'fill')
if currentColour == 'red':
   self.draw.itemconfigure(item, fill='blue')
else:
   self.draw.itemconfigure(item, fill='red')

def moveBall(self, *args):
if (self.x > 5.0) or (self.x < 0.0):
self.velocity_x = -1.0 * self.velocity_x
if (self.y > 5.0) or (self.y < 0.0):
self.velocity_y = -1.0 * self.velocity_y
deltax = (self.velocity_x * self.speed.get() / 100.0)
deltay = (self.velocity_y * self.speed.get() / 100.0)
self.x = self.x + deltax
self.y = self.y + deltay
self.draw.move(self.ball,  "%ri" % deltax, "%ri" % deltay)
self.after(10, self.moveBall)

def __init__(self, master=None):
Frame.__init__(self, master)
Pack.config(self)
self.createWidgets()
self.after(10, self.moveBall)

game = Pong()
game.mainloop()

Thanks

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Re: Mouse event - binding

[beta]

Hi John,

It don't work!
I did what you told me, here is theBall function

def theBall(self):
 self.ball = self.draw.create_oval("0i", "0i", "0.20i",
"0.20i",
  fill="red")
 self.draw.tag_bind(self.ball, '', changeColour)

Would you review all my code?

from Tkinter import *
import string

class Pong(Frame):
def createWidgets(self):
self.QUIT = Button(self, text='QUIT', foreground='red',
   command=self.quit)
self.QUIT.pack(side=LEFT, fill=BOTH)

## The playing field
self.draw = Canvas(self, width="5i", height="5i")

## The speed control for the ball
self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
   from_=-100, to=100)

self.speed.pack(side=BOTTOM, fill=X)

# The ball
#self.ball = self.draw.create_oval("0i", "0i", "0.10i",
"0.10i",
#  fill="red")
self.theBall()
self.x = 0.05
self.y = 0.05
self.velocity_x = 0.3
self.velocity_y = 0.5

self.draw.pack(side=LEFT)
def theBall(self):
 self.ball = self.draw.create_oval("0i", "0i", "0.20i",
"0.20i",
  fill="red")
 self.draw.tag_bind(self.ball, '', changeColour)

def changeColour(self, event):
x = self.draw.canvasx(event.x)
y = self.draw.canvasy(event.y)
item = self.draw.find_closest(x,y)
currentColour = self.draw.itemcget(item, 'fill')
if currentColour == 'red':
   self.draw.itemconfigure(item, fill='blue')
else:
   self.draw.itemconfigure(item, fill='red')

def moveBall(self, *args):
if (self.x > 5.0) or (self.x < 0.0):
self.velocity_x = -1.0 * self.velocity_x
if (self.y > 5.0) or (self.y < 0.0):
self.velocity_y = -1.0 * self.velocity_y

deltax = (self.velocity_x * self.speed.get() / 100.0)
deltay = (self.velocity_y * self.speed.get() / 100.0)
self.x = self.x + deltax
self.y = self.y + deltay

self.draw.move(self.ball,  "%ri" % deltax, "%ri" % deltay)
self.after(10, self.moveBall)

def __init__(self, master=None):
Frame.__init__(self, master)
Pack.config(self)
self.createWidgets()
self.after(10, self.moveBall)
game = Pong()

game.mainloop()


Thanks,
Quoc

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binding - python

[beta]

Dear All,

I am new with Python. I have question on binding.
I have small pingpong application, I want to change color og the ball
whenever mouse is clicked. I have theBall and changeColor functions. I
don't know how to bind it together. Does anyone know? I am very
appreciate of your help. Thanks.

Here is a source code:


from Tkinter import *
import string

class Pong(Frame):
def createWidgets(self):
self.QUIT = Button(self, text='QUIT', foreground='red',
   command=self.quit)
self.QUIT.pack(side=LEFT, fill=BOTH)

## The playing field
self.draw = Canvas(self, width="5i", height="5i")

## The speed control for the ball
self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
   from_=-100, to=100)

self.speed.pack(side=BOTTOM, fill=X)

# The ball
#self.ball = self.draw.create_oval("0i", "0i", "0.10i",
"0.10i",
#  fill="red")
self.theBall()
self.x = 0.05
self.y = 0.05
self.velocity_x = 0.3
self.velocity_y = 0.5

self.draw.pack(side=LEFT)
def theBall(self):
 self.ball = self.draw.create_oval("0i", "0i", "0.20i",
"0.20i", fill='blue' )



def changeColor(sefl, event):
x = self.draw.canvasx(event.x)
y = self.draw.canvasy(event.y)
item = self.draw.find_closest(x,y)
currentColour = self.draw.itemcget(item, 'fill')
if currentColour == 'red':
self.draw.itemconfigure(item, fill='blue')
else:
self.draw.itemconfigure(item, fill='red')

def moveBall(self, *args):
if (self.x > 5.0) or (self.x < 0.0):
self.velocity_x = -1.0 * self.velocity_x
if (self.y > 5.0) or (self.y < 0.0):
self.velocity_y = -1.0 * self.velocity_y

deltax = (self.velocity_x * self.speed.get() / 100.0)
deltay = (self.velocity_y * self.speed.get() / 100.0)
self.x = self.x + deltax
self.y = self.y + deltay

self.draw.move(self.ball,  "%ri" % deltax, "%ri" % deltay)
self.after(10, self.moveBall)

def __init__(self, master=None):
Frame.__init__(self, master)
Pack.config(self)
self.createWidgets()
self.after(10, self.moveBall)


game = Pong()

game.mainloop()

+++
Thanks,
Quoc

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Re: binding - python

[beta]

Hi John,

It works! thank you vey much.

I have another question. I would very appreciated if you have any clue.

I want the ball STOP whenever mouse is clicked anywhere, then ball KEEP
MOVING when next mouse click is applied. Thanks.

Regards,
Quoc

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Re: binding - python

[beta]

Hi John,

It works. Thank you veyr much.

Cheers,
Q

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