Have Render By Attribute externally controllable

[Tom Goddard]

Allow other code to bring up Render By Attribute showing desired attribute/colors/etc.

[Tom Goddard]

I added structure coloring controls to the mutation scatter plot gui yesterday that attempts to setup the Render by Attribute GUI (residues, specific structures, mutation score attribute, palette and levels). I used private methods of render by attribute in scatter plot function _show_render_by_attribute_gui() in code

chimerax/src/bundles/mutation_scores/src/ms_scatter_plot.py

It is not quite working because setting the render by attribute models causes a delayed callback that overwrites my render by attribute palette setting. So using a public API to set the render by attribute gui controls would be helpful.

[Tom Goddard]

The mutation scores scatter plot use of render by attribute is part of ticket #19403.

[Eric Pettersen]

By "palette" do you literally mean a palette name, or do you mean a series of color values?

[Tom Goddard]

I meant color values and specified color levels.

[Eric Pettersen]

The Render/Select By Attribute tool now has a configure() method. I hope the method's doc string does a good enough job of explaining how it's used.