Manipulating Internal Images

[Al Morgan <almorgan pdxlinux org>]

I have a GdkPixmap image.  How can I resize it, and rotate it?  Are 
there any routines built into GDK to do this?
Also, I'm writing a map editor of sorts.  It will involve a large 
canvas, on which I'll write hexes, and different tiles (the resize is 
for zooming in and out).  What do you think would be the best way to do 
this: Put a huge canvas with the entire map on it in a scrolled window, 
or have a smaller canvas, the size of the scrolled window, and redraw it 
when the user scrolls the screen?  Would a sufficiently large canvas eat 
up an amount of RAM to make a difference?
Thanks,

        Al Morgan [ mann2 qwest net ]