flipping an Icon within java

[Ralph Boland]

I am trying to flip the thumb on a horizontal slider so that it points
down instead of up.
To do this I need to flip the icon representing the thumb
(I am using MetalSliderUI which uses an Icon for the thumb).
I tried rotating the icon 180 degrees but it proved to be very slow.

Any suggestions as to how to just flip an Icon horizontally.

Thanks

Ralph Boland

P.S. I originally posted this on comp.lang.java.guis
and someone proposed that I flip my icon using
paint show pro.
But I much prefer/need a solution that works within Java.

Solutions most welcome.

 

[Daniele Futtorovic]

I am trying to flip the thumb on a horizontal slider so that it
points down instead of up. To do this I need to flip the icon
representing the thumb (I am using MetalSliderUI which uses an Icon
for the thumb). I tried rotating the icon 180 degrees but it proved
to be very slow.

Any suggestions as to how to just flip an Icon horizontally.

Thanks

Ralph Boland

P.S. I originally posted this on comp.lang.java.guis and someone
proposed that I flip my icon using paint show pro. But I much
prefer/need a solution that works within Java.

Solutions most welcome.

As an idea:

- Extend MetalSliderUI

- Override the bit where it paints the thumb

- Just before it paints the thumb, apply an AffineTransform which flips
180 deg. (storing the previous AT, and concatenating the new one with
the old one, if any)

- After it's painted the icon, restore the previous AT.