Re: maximing/resizing multiple x11: change of palette

[Ethan M. <merritt@u.washington.edu>]

On Monday 16 August 2004 01:42 pm, Dave Denholm wrote:
> 
> (Come to think of it - I may not even have the latest sources, in
>  which case what I just wrote may have been rubbish)

The particular code bit you posted applies to line colors, not
to pm3d rectangles.   But there is a similar bit of code in 
PaletteSetColor(plot_struct * plot, double gray) that applies
to pm3d:

        index = gray * (plot->cmap->allocated - 1);
        if (index >= plot->cmap->allocated)
                index = plot->cmap->allocated -1;
        XSetForeground(dpy, gc_pm3d, plot->cmap->pixels[index]);

I don't really have a grasp of the big picture.
I *think* the problem is that plot->cmap itself is still only
a list of color indices, and since the time it was first set up the 
true colormap stored in the gc has changed.  So the above
code updates the index, but it is an index into an obsolete table.
That's why I thought we might have to store a copy of the gc
in use at the time the original color mapping was set up.

Maybe.



-- 
Ethan A Merritt       merritt@u.washington.edu
Biomolecular Structure Center
Mailstop 357742
University of Washington, Seattle, WA 98195