Moving defined objects in python canvas

Question

I want ot move a defined object in canvas. I know there's a command that moves an object(.move) hovewer it only works on individual items. So how could I move a whole defined object made up of rectangles? Like the one in the example? Because I need to move hundreds of little objects as one.

x=400
y=400



def player(x,y):
    canvas.create_rectangle(x,y,x+50,y+50,fill='black')
    canvas.create_rectangle(x,y+50,x+150,y+150,fill='red')


def moveright(coordinates2):
    global x
    global y
    x=x+200
    y=y+0
    player(x,y)

def moveleft(coordinates3):
    global x
    global y
    x=x-200
    y=y+0
    player(x,y)

def moveup(coordinates4):
    global x
    global y
    x=x+0
    y=y-150
    player(x,y)

def moveright(coordinates5):
    global x
    global y
    x=x+0
    y=y+150
    player(x,y)



canvas.bind_all('<Right>',moveright)
canvas.bind_all('<Left>',moveleft)
canvas.bind_all('<Up>',moveup)
canvas.bind_all('<Down>',movedown)

Please try to reduce this down to a minimal reproducible example We don't need all the code for all the bindings, just the ones related to moving. We also don't need dozens of canvas items when just one or two will do for the purpose of this question. — Bryan Oakley
– Bryan Oakley, Commented Nov 26, 2018 at 4:27

j_4321 · Accepted Answer · 2018-11-27 08:28:16Z

1

Unlike what you said in the question, move does work for groups of items if you use tags: canvas.move(<tag or id>, x, y).

Here is an example:

import tkinter as tk

root = tk.Tk()
canvas = tk.Canvas(root)
canvas.pack()


def move():
    # move all items with the 'group' tag
    canvas.move('group', 10, 10)


canvas.create_rectangle(10, 10, 30, 30, tags=['group'])
canvas.create_rectangle(20, 40, 50, 70, tags=['group'])
canvas.create_rectangle(60, 50, 80, 60, tags=['group'])

tk.Button(root, text='Move', command=move).pack()
root.mainloop()

answered Nov 27, 2018 at 8:28

j_4321

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