On Tue, 30 Apr 2013 09:31:43 -0300 Gustavo Sverzut Barbieri
<barbi...@profusion.mobi> said:

> Hi,
> 
> 
> On Tue, Apr 30, 2013 at 8:57 AM, Carsten Haitzler <ras...@rasterman.com>wrote:
> 
> > On Tue, 30 Apr 2013 18:03:21 +0800 hYde <hyde....@gmail.com> said:
> >
> > > Since my BIOS has only about 8MB of space, I take Evas + Edje.
> >
> > you'll need ecore, eet and eina too then. (well some of ecore).
> 
> 
> that's why I explicitly removed Edje. Edje pulls too much, and will not
> aggregate that much value for the BIOS case (show menu and similar). Of
> course it would be nice to have a complete environment with Elementary and
> all, but I don't think it's doable without LOTS of effort, so stick with
> Evas first -- particularly pre-Eina Evas.

well you still need eina anyway. so edje adds eet and ecore (ecore, ecore-imf,
ecore-file, ecore-evas, ecore-input, ecore-evas). these ecores are fairly
small, and ecore-evas pulls in ecore-con and ecore-ipc.

there likely will be the need for ecore anyway for a mainloop etc. so i'd guess
it doesnt end up too bad, and relying on eet as a way of nicely encapsulating
data into a single file will be helpful. lossy compression for images with
alpha (that jeg doesnt do and png doesnt do) will save you space too if you use
such image data much. so in the end i am not sure it will be too bad.
elementary thought makes things a whole new level.

> > > May I ask what is pre-merge?
> >
> > efl 1.7.x ... from efl 1.8 we have a single build tree and we have upped
> > our
> > dependencies. 1.8 is not out yet.. but release is scheduled for end of may.
> 
> 
> Yes, but I'd strongly encourage to find out the Evas version before Eina
> was introduced. Then you don't need Eina, just Evas types that were built
> in (saves a lib to care and some Kb in the final image).
> 
> With Evas all you need is to create an engine similar to "FB", give Evas
> the framebuffer (pixels) to paint and that's it. If you can configure your
> FB, then it should be pretty simple to get it running. You can copy
> Expedite's model, that is basically a loop:
>    while (1) {
>       event = get_event();
>       if (event) process_event(event);
>       evas_render_updates(evas);
>    }
> 
> from process_event() you can arrange your objects as you wish (create,
> move, resize...), evas_render_updates() will take care to draw them to
> output. Eventually you'd have to ask the FB to update itself, depends on
> your setup.
> 
> If you need to strip the libraries, I'd recommend to remove the following
> chunks from Evas:
>    - Gradients: it was removed in current Evas, but the pre-Eina still
> contained it with lots of useless code;
>    - Textblock: if you don't need text markup or multi-line text, you can
> remove this and lots of code.
> 
> And of course choose the minimum set of engines and options, I'm not sure
> the bootloader can use MMX/SSE, then you can compile out those with
> ./configure flags.
> 
> 
> NOTE: which hardware are you using this? It seems like a nice hobby project
> I'd help on weekends, but I'd need to have a way to test :-)
> 
> 
> -- 
> Gustavo Sverzut Barbieri
> http://profusion.mobi embedded systems
> --------------------------------------
> MSN: barbi...@gmail.com
> Skype: gsbarbieri
> Mobile: +55 (19) 9225-2202
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-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    ras...@rasterman.com


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