Re: [matplotlib-devel] chicken/egg (or figure/canvas) question

[Benjamin R. <ben...@ou...>]

Actually, I think I found it. It looks like each backend defines a
new_figure_manager() function. Then, in backends/__init__.py, not only do
the aliased FigureManager and FigureCanvas objects get imported from the
appropriate module, but so does that function. It is pylab_setup() in the
backends/__init__.py that creates the canvas object, it seems?

I guess this is one of those remaining issues that is keeping us from fully
separating pyplot from the rest of matplotlib?

Cheers!
Ben Root


On Sat, Nov 22, 2014 at 4:30 PM, Benjamin Root <ben...@ou...> wrote:

> I thought I had this understood, but now I am confused while working on my
> last chapter. I know that the Figure object never directly creates its own
> canvas object. It starts off with a None object as a placeholder and waits
> for one to be given to it. However, I can only find one place where the
> figure object's set_canvas() method is called, and that is in the canvas's
> print_figure() method to restore itself as the figure's canvas after
> temporaraily switching to another backend for saving.
>
> I thought that the FigureManager initializes the primary canvas object,
> but that doesn't seem to be the case. Where is it done?
>
> Cheers!
> Ben Root
>