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Hello,

Is there any way to save a canvas created with tkinter to a gif (or
any other graphic) without using PIL (I cannot build it on our unix
machine)? For example with this simple code :
>>>
from Tkinter import *

root=Tk()
base=Canvas(root,width=50,height=50)
base.create_rectangle(0,0,50,25,fill='red')
base.create_rectangle(0,25,50,50,fill='blue')

base.pack()
root.mainloop()
<<<
How can I save the image with the two colored rectangle onto a graphic
file?
I looked on google and in the documentation but I didn't find how to
do it. Thanks for any help.

Sebastien.

On Wed, 14 Apr 2004, biner wrote:

> Is there any way to save a canvas created with tkinter to a gif (or
> any other graphic) without using PIL (I cannot build it on our unix
> machine)?

Have you tried the postscript method of Tkinter.Canvas?

> base=Canvas(root,width=50,height=50)
> base.create_rectangle(0,0,50,25,fill='red')
> base.create_rectangle(0,25,50,50,fill='blue')
> base.pack()

base.postscript("file.ps")

/Mickel

--
Mickel Grönroos, application specialist, linguistics, Research support, CSC
PL 405 (Tekniikantie 15 a D), 02101 Espoo, Finland, phone +358-9-4572237
CSC is the Finnish IT center for science, www.csc.fi

I've been dealing with the same problem. This was my solution for
saving as jpeg. You can look up how to specify gif.


# save the canvas as a ps file
self.canvas.postscript(file='tmp.ps', x=start_x, y=start_y, height=h,
width=w)

# convert the ps to a jpeg - it'll be in the middle
# of the pic
# gs = ghostscript
os.system('gs -sDEVICE=jpeg -sOutputFile=tmp.jpeg -dNOPAUSE -q -dBATCH
tmp.ps')

# extract the frame from that jpeg
# use PIL here
im = Image.open('tmp.jpeg')
box = ((im.size[0] - self.movie_size[0])/2, (im.size[1] -
self.movie_size[1])/2, (im.size[0] + self.movie_size[0])/2,
(im.size[1] + s
elf.movie_size[1])/2)
to_save = im.crop(box)

# save that extracted frame
to_save.save('ultimate_text.jpeg', 'jpeg')


(biner) wrote in message news:<. com>...
> Hello,
>
> Is there any way to save a canvas created with tkinter to a gif (or
> any other graphic) without using PIL (I cannot build it on our unix
> machine)? For example with this simple code :
> >>>
> from Tkinter import *
>
> root=Tk()
> base=Canvas(root,width=50,height=50)
> base.create_rectangle(0,0,50,25,fill='red')
> base.create_rectangle(0,25,50,50,fill='blue')
>
> base.pack()
> root.mainloop()
> <<<
> How can I save the image with the two colored rectangle onto a graphic
> file?
> I looked on google and in the documentation but I didn't find how to
> do it. Thanks for any help.
>
> Sebastien.
>