images don't scale when the stack changes size
durneybr at uvsc.edu
Tue Dec 5 18:48:42 EST 2006
I am making a remote-controlled slide show program where a user uses
a local machine to control a slide show stack on a remote machine. I
want to make a thumbnail version of the slide show stack so that the
user can see what's happening on the remote machine. I also want the
user to be able to numerically specify a new size for the slide show
What I tried was putting an image on each card and locking the size
and position. I set the Geometry to scale the image relative to the
edges of the stack. Then I made a button to change the size of the
stack to the thumbnail size by setting the width and height of the
stack. I expected the image to scale when the stack size changed,
but it didn't.
When I drag the resize handle of the stack, the image scales. That
doesn't help me, because I want to numerically specify the new size
(e.g., 800x600), and I don't want the aspect ratio of the stack to
change because then the images are distorted.
I have also thought of writing a loop to go through the cards and
scale the images, but I would rather use the Geometry if that will
work for more complicated cards (e.g., cards that have polygons,
Please let me know if I'm missing something with the Geometry, or if
there is another approach.
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