Re: Cairo backend of GtkPlot

Hi Adrian,

Thanks for the encouragement. I needed that to keep going. :-)

I've put up a page showing my current progress:

    http://imagic.weizmann.ac.il/~dov/freesw/gtk/gtk+extra-cairo/index.html

I'm a bit weary of how to continue as I would like to make some big
changes, that are breaking backwards compatibility. They are:

1. Replace gtk's current markup language with PangoMarkup.
2. Replace the current font mechanism with fontconfig fonts.
3. Replace symbols with static svg files.

What do you think Adrian?

Other things that need to be done:

* Get rid of the postcript backend and simply use the cairo backend
with proper initialization.
* Get rid of gtkplotcanvas alltogether.
* Add arrows to the axes. :-)
* Support pdf and svg output.
* Allow drawing on user provided cairo surface. Perhaps then we don't
need to provide save functions at all.

I'd like to putback my work in progress as a backup. Should I create a
cvs branch?

Regards,
Dov

On 7/17/06, Adrian E. Feiguin <[email protected]> wrote:
> That's great Dov, thanks for taking care of the port!
> I guess this would also make gtkplotps obsolete.
> Keep us posted with your progress.
> Saludos,
> <ADRIAN>
>
> Dov Grobgeld wrote:
>
> >Hello,
> >
> >I thought the following comment that I added to the feature request 1382216 [1],
> >might be of interest to the mailing list:
> >
> >I finally started working on this. So far I have created a
> >new implementation of the GtkPlotPC interface called
> >GtkPlotCairo, that draws through the cairo backend. I have
> >implemented most backend functions, except the text and the
> >image drawing. Meanwhile I have not modified the GtkPlotPC
> >interface.
> >
> >Further I have replaced the instantiation of a GtkPlotGdk
> >object with the GtkPlotCairo class. The software compiles,
> >but still nothing is drawn in the GdkWindow. I still have
> >some debugging to see why that is happening.
> >
> >Once I get this to work my plans are:
> >
> >1. Change the API of GtkPlotPC to get rid of all the Gdk
> >structures in the interface, and replace these with cairo
> >structures.
> >
> >2. Get rid of GtkPlotPC alltogether and work directly with
> >cairo. Possibly I will create some utility functions to make
> >the conversion from the current to API to cairo smoother.
> >
> >Regards,
> >Dov
> >
> >[1] http://tinyurl.com/olanb
> >(http://sourceforge.net/tracker/index.php?func=detail&aid=1382216&group_id=11638&atid=361638)
> >
> >
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>
>

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