[Image-SIG] ImageTk bug

[Nick Bower]

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I think I've figured out how to use the palette, but I may have found a =

bug in the PhotoImage class of ImageTk.  If the marked line in the short=
=20
testcode (attached) isn't commented out, the program segfaults as you'll=
=20
see by running it.

Anyone know how else to make palettes work with Tk?

nick

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#!/usr/bin/python

from Tkinter import *
import Image, ImageTk

class piltest(Frame):

  def __init__(self, toplevel):

    # GUI Setup

    Frame.__init__(self,toplevel)

    self.photoimage =3D ImageTk.PhotoImage('P',(300,300))

    imagecanvas =3D Canvas(self, width=3D300,height=3D300)
    imagecanvas.pack(side=3DBOTTOM)
    imagecanvas.create_image(150,150,image=3Dself.photoimage)

  def putdata(self,data):

    im =3D Image.new('P', (300,300))
    im.putdata(data)

    palette =3D [0] * 3 * 256
    palette[0    :14    ] =3D [0,  0,  0,  200,0,  255,0,  187,127,219,1=
12,163,171,230,127]
    palette[0+256:14+256] =3D [0,  0,  0,  200,0,  255,0,  187,127,219,1=
12,163,171,230,127]
    palette[0+512:14+512] =3D [0,  0,  255,0,  255,255,115,0,  127,147,2=
19,255,127,0,  127]

    #
    # IF THE FOLLOWING LINE IS UNCOMMENTED, A SEGAULT OCCURS AFTER
    # THE PHOTOIMAGE PASTE METHOD
    #
    im.putpalette(palette)

    print 'trying to paste'
    self.photoimage.paste(im)
    print 'done pasting - no more code'


# Run as script

if (__name__ =3D=3D '__main__'):
  toplevel =3D Tk()
  atest =3D piltest(toplevel)
  atest.pack()
  atest.putdata([0,1]*45000) # simulate 300x300 image
  atest.mainloop()

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