Zoom GUI in fltk backend

[Søren Hauberg]

Hi All

Since Michael implemented text rendering in the fltk backend I've been
trying to use it for basic plotting. After a while I came to the
conclusion that I found the zooming interface quite confusing -- I
actually had to read the code figure out how to work with it. So, I've
been playing a bit with an alternative user interface (patch attached).
With this, you zoom using the mouse scroll wheel, and dragging moves the
center of the plot. I find this much more intuitive, but that might just
be because my mind works in weird ways...

Anyway, I'm attaching a patch in case anybody wants to try this out. I
had to hardcode the upper and lower bounds for the plot because I
couldn't figure out how to extract this information from the axes. So,
if you want to play with this, make sure that

  min (x) = 0   and   max (x) = 10

and likewise for y. I've been playing with the following plot:

  x = linspace (0, 10, 100);
  plot (x, 5*sin (x) + 5);

Comments?

Soren

ui.patch
Description: Text Data