kicad-developers team mailing list archive

[Jon Evans <jon@xxxxxxxxxxxxx>]

Hi Chris,

I'm not an expert, but based on what I've learned playing with GAL so far...
As it stands right now, you will have to keep around an EDA_DRAW_PANEL_GAL,
because as far as I can tell there is too much interdependence between the
underlying GAL context, VIEW, and the draw panel.
I am not familiar enough with wxWidgets to know what would happen if you
tried to keep a single draw panel widget around, and attach/detach it from
the component selector dynamically.  But, if that is supported, you should
be able to have your GAL panel start/stop drawing as needed.

-Jon

On Thu, Mar 9, 2017 at 2:27 PM, Chris Pavlina <pavlina.chris@xxxxxxxxx>
wrote:

> I'm trying to speed up my new component selector, since the previous one
> loaded and searched so quickly. I don't want a serious efficiency
> regression in one of the most used dialogs in eeschema.
>
> Since optimizing the column sizing cache and data sorting, the slowest
> part is now loading FOOTPRINT_PREVIEW_PANEL, which has to initialize a
> GAL.
>
> Tom/Orson/anyone else who knows GAL - can you think of a reasonable way
> to either speed up the initialization or retain an initialized copy
> between dialog invocations? I'm thinking about just keeping the dialog
> in memory all the time and hiding it when not in use instead of
> destroying and reinstantiating it - will this cause any problems with
> GAL no longer having something to draw to? (Bear in mind I'm unfamiliar
> with both GAL and how wxWidgets handles graphics here.)
>
> If it provides any relevant information, I'm currently forcing Cairo
> mode in the component selector, to avoid having to deal with graphics
> support in a simple dialog (since drawing efficiency is not required).
>
> --
> Chris
>
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