Button motion animation in tkinter

I want to move a button animated. For example it starts from x=0 and y=0, after 0.1 second x=1 and y=1 ... x=50 and y=50.

I tried this:

import tkinter

import time



b=tkinter.Button(text="Example")

for i in range(50): 

    i+=1

    b.place(x=i, y=i)

    time.sleep(0.1)

The window opened after all place commands were executed.

asked Nov 21 '18 at 19:02

Tomdzsó

Because tkinter is event based you end up freezing the main loop when using sleep() in it. The after() method works with the event manager so this does not happen.

– Mike - SMT
Nov 21 '18 at 20:15

add a comment |

I want to move a button animated. For example it starts from x=0 and y=0, after 0.1 second x=1 and y=1 ... x=50 and y=50.

I tried this:

import tkinter

import time



b=tkinter.Button(text="Example")

for i in range(50): 

    i+=1

    b.place(x=i, y=i)

    time.sleep(0.1)

The window opened after all place commands were executed.

asked Nov 21 '18 at 19:02

Tomdzsó

Because tkinter is event based you end up freezing the main loop when using sleep() in it. The after() method works with the event manager so this does not happen.

– Mike - SMT
Nov 21 '18 at 20:15

add a comment |

I want to move a button animated. For example it starts from x=0 and y=0, after 0.1 second x=1 and y=1 ... x=50 and y=50.

I tried this:

import tkinter

import time



b=tkinter.Button(text="Example")

for i in range(50): 

    i+=1

    b.place(x=i, y=i)

    time.sleep(0.1)

The window opened after all place commands were executed.

asked Nov 21 '18 at 19:02

Tomdzsó

I want to move a button animated. For example it starts from x=0 and y=0, after 0.1 second x=1 and y=1 ... x=50 and y=50.

I tried this:

import tkinter

import time



b=tkinter.Button(text="Example")

for i in range(50): 

    i+=1

    b.place(x=i, y=i)

    time.sleep(0.1)

The window opened after all place commands were executed.

python button tkinter jquery-animate motion

asked Nov 21 '18 at 19:02

Tomdzsó

asked Nov 21 '18 at 19:02

Tomdzsó

asked Nov 21 '18 at 19:02

Tomdzsó

asked Nov 21 '18 at 19:02

Tomdzsó

asked Nov 21 '18 at 19:02

Tomdzsó

Because tkinter is event based you end up freezing the main loop when using sleep() in it. The after() method works with the event manager so this does not happen.

– Mike - SMT
Nov 21 '18 at 20:15

add a comment |

Because tkinter is event based you end up freezing the main loop when using sleep() in it. The after() method works with the event manager so this does not happen.

– Mike - SMT
Nov 21 '18 at 20:15

Because tkinter is event based you end up freezing the main loop when using sleep() in it. The after() method works with the event manager so this does not happen.

– Mike - SMT
Nov 21 '18 at 20:15

add a comment |

1 Answer
1

active

oldest

votes

Do not pause/sleep your python program. As pointed out by @Mike-SMT, it may end up freezing up your mainloop. If you want to do animation, after is the way to go.

import tkinter as tk



root = tk.Tk()

b = tk.Button(root, text="Example")



def move(i):

    if i<=50:

        b.place(x=i, y=i)

        b.after(100, lambda: move(i)) #after every 100ms

        i = i+1



move(0) #Start animation instantly

root.mainloop()

enter image description here

edited Nov 21 '18 at 21:11

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

Change this root.after(0, lambda: move(0)) to move(0). There is no point to doing a lambda or after() here.

– Mike - SMT
Nov 21 '18 at 20:13

@Mike-SMT: oh, I'm sorry. My mistake. You are correct that the use of after for the first step isn't necessary. I'll remove my comment.

– Bryan Oakley
Nov 21 '18 at 20:17

@BryanOakley Thanks. I was worried for a second. I was like "I am sure that after/lambda is overkill here." lol.

– Mike - SMT
Nov 21 '18 at 20:21

@Mike-SMT Yes, Sorry didn't realise that. Initially I wanted to start the animation after some time, so I had an after there as well. But it is not needed.

– Miraj50
Nov 21 '18 at 21:13

add a comment |

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1 Answer
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active

oldest

votes

1 Answer
1

active

oldest

votes

Do not pause/sleep your python program. As pointed out by @Mike-SMT, it may end up freezing up your mainloop. If you want to do animation, after is the way to go.

import tkinter as tk



root = tk.Tk()

b = tk.Button(root, text="Example")



def move(i):

    if i<=50:

        b.place(x=i, y=i)

        b.after(100, lambda: move(i)) #after every 100ms

        i = i+1



move(0) #Start animation instantly

root.mainloop()

enter image description here

edited Nov 21 '18 at 21:11

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

Change this root.after(0, lambda: move(0)) to move(0). There is no point to doing a lambda or after() here.

– Mike - SMT
Nov 21 '18 at 20:13

@Mike-SMT: oh, I'm sorry. My mistake. You are correct that the use of after for the first step isn't necessary. I'll remove my comment.

– Bryan Oakley
Nov 21 '18 at 20:17

@BryanOakley Thanks. I was worried for a second. I was like "I am sure that after/lambda is overkill here." lol.

– Mike - SMT
Nov 21 '18 at 20:21

@Mike-SMT Yes, Sorry didn't realise that. Initially I wanted to start the animation after some time, so I had an after there as well. But it is not needed.

– Miraj50
Nov 21 '18 at 21:13

add a comment |

Do not pause/sleep your python program. As pointed out by @Mike-SMT, it may end up freezing up your mainloop. If you want to do animation, after is the way to go.

import tkinter as tk



root = tk.Tk()

b = tk.Button(root, text="Example")



def move(i):

    if i<=50:

        b.place(x=i, y=i)

        b.after(100, lambda: move(i)) #after every 100ms

        i = i+1



move(0) #Start animation instantly

root.mainloop()

enter image description here

edited Nov 21 '18 at 21:11

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

Change this root.after(0, lambda: move(0)) to move(0). There is no point to doing a lambda or after() here.

– Mike - SMT
Nov 21 '18 at 20:13

@Mike-SMT: oh, I'm sorry. My mistake. You are correct that the use of after for the first step isn't necessary. I'll remove my comment.

– Bryan Oakley
Nov 21 '18 at 20:17

@BryanOakley Thanks. I was worried for a second. I was like "I am sure that after/lambda is overkill here." lol.

– Mike - SMT
Nov 21 '18 at 20:21

@Mike-SMT Yes, Sorry didn't realise that. Initially I wanted to start the animation after some time, so I had an after there as well. But it is not needed.

– Miraj50
Nov 21 '18 at 21:13

add a comment |

Do not pause/sleep your python program. As pointed out by @Mike-SMT, it may end up freezing up your mainloop. If you want to do animation, after is the way to go.

import tkinter as tk



root = tk.Tk()

b = tk.Button(root, text="Example")



def move(i):

    if i<=50:

        b.place(x=i, y=i)

        b.after(100, lambda: move(i)) #after every 100ms

        i = i+1



move(0) #Start animation instantly

root.mainloop()

enter image description here

edited Nov 21 '18 at 21:11

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

Do not pause/sleep your python program. As pointed out by @Mike-SMT, it may end up freezing up your mainloop. If you want to do animation, after is the way to go.

import tkinter as tk



root = tk.Tk()

b = tk.Button(root, text="Example")



def move(i):

    if i<=50:

        b.place(x=i, y=i)

        b.after(100, lambda: move(i)) #after every 100ms

        i = i+1



move(0) #Start animation instantly

root.mainloop()

enter image description here

edited Nov 21 '18 at 21:11

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

edited Nov 21 '18 at 21:11

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

answered Nov 21 '18 at 19:23

Miraj50

2,6001824

Change this root.after(0, lambda: move(0)) to move(0). There is no point to doing a lambda or after() here.

– Mike - SMT
Nov 21 '18 at 20:13

@Mike-SMT: oh, I'm sorry. My mistake. You are correct that the use of after for the first step isn't necessary. I'll remove my comment.

– Bryan Oakley
Nov 21 '18 at 20:17

@BryanOakley Thanks. I was worried for a second. I was like "I am sure that after/lambda is overkill here." lol.

– Mike - SMT
Nov 21 '18 at 20:21

@Mike-SMT Yes, Sorry didn't realise that. Initially I wanted to start the animation after some time, so I had an after there as well. But it is not needed.

– Miraj50
Nov 21 '18 at 21:13

add a comment |

Change this root.after(0, lambda: move(0)) to move(0). There is no point to doing a lambda or after() here.

– Mike - SMT
Nov 21 '18 at 20:13

@Mike-SMT: oh, I'm sorry. My mistake. You are correct that the use of after for the first step isn't necessary. I'll remove my comment.

– Bryan Oakley
Nov 21 '18 at 20:17

@BryanOakley Thanks. I was worried for a second. I was like "I am sure that after/lambda is overkill here." lol.

– Mike - SMT
Nov 21 '18 at 20:21

@Mike-SMT Yes, Sorry didn't realise that. Initially I wanted to start the animation after some time, so I had an after there as well. But it is not needed.

– Miraj50
Nov 21 '18 at 21:13

Change this root.after(0, lambda: move(0)) to move(0). There is no point to doing a lambda or after() here.

– Mike - SMT
Nov 21 '18 at 20:13

@Mike-SMT: oh, I'm sorry. My mistake. You are correct that the use of after for the first step isn't necessary. I'll remove my comment.

– Bryan Oakley
Nov 21 '18 at 20:17

@BryanOakley Thanks. I was worried for a second. I was like "I am sure that after/lambda is overkill here." lol.

– Mike - SMT
Nov 21 '18 at 20:21

@Mike-SMT Yes, Sorry didn't realise that. Initially I wanted to start the animation after some time, so I had an after there as well. But it is not needed.

– Miraj50
Nov 21 '18 at 21:13

add a comment |

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