Yes, it gets to the canvas.root().add() call because if I don't include
that line the script works as expected. Any ideas?
> What line is the script stopping at...from the traceback? Does it make it to
> the canvas.root().add() call?
>
>
> Jeff
>
>
> Travis Oliphant wrote:
> >
> > I have just started using the gnome-python system and am having trouble
> > displaying an image on the Gnome Canvas.
> >
> > I'm using gnome-python-1.0.3
> >
> > This is what I'm doing. Am I doing something wrong?
> >
> > import gtk
> > import GdkImlib
> > import gnome.ui
> >
> > import MLab # some numeric functions
> >
> > arr = MLab.eye(50) # an identity matrix
> >
> > # Make the identity matrix into an RGB image with a diagonal of
> > # RGB=255,255,255
> > arr = (arr[...,MLab.NewAxis]*MLab.ones((1,1,3))*255).astype('b')
> >
> > # create the image from a string of data
> > im = GdkImlib.create_image_from_data(arr.tostring(),None,50,50)
> >
> > # Construct a window
> > win = gtk.GtkWindow()
> > win.connect('destroy',gtk.mainquit)
> > win.show()
> >
> > # Construct a canvas
> > canvas = gnome.ui.GnomeCanvas()
> > canvas.set_usize(200,200)
> >
> > # Add canvas to the window
> > win.add(canvas)
> > canvas.show()
> >
> > # Add an ellipse to the window (this works)
> > el=canvas.root().add('ellipse',x1=30,x2=60,y1=40,y2=100,fill_color='blue')
> >
> > # Add an image to the window (this doesn't)
> > theim = canvas.root().add('image',x=10,y=20,image=im._im)
> >
> > gtk.mainloop()
> >
> > The result of this script:
> >
> > GnomeUI-ERROR **: file gnome-canvas-image.c: line 461 (recalc_if_needed):
> > assertion failed: (image->pixmap != NULL)
> > aborting...
> > Aborted (core dumped)
> >
> > In the source-code this assertion takes place right after the command
> >
> > image->pixmap = gdk_imlib_move_image (image->im);
> >
> > which I suppose renders the RGB image in a pixmap for display. Apparently
> > this call is not working. But it seems like I'm passing the right type
> > (im._im is a PyGdkImageObject in Python).
> >
> > Any help is appreciated..
> >
> > Thanks,
> >
> > Travis Oliphant
> > [EMAIL PROTECTED]
> >
> > To unsubscribe: echo "unsubscribe" | mail [EMAIL PROTECTED]
>
> --
> J.W. Bizzaro mailto:[EMAIL PROTECTED]
> Boston College Chemistry http://www.uml.edu/Dept/Chem/Bizzaro/
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