[cairo] creating graphics for use with cairo

Dan McMahill dan at mcmahill.net
Fri Jan 16 19:49:58 PST 2009

Dan McMahill wrote:
> Peter Clifton wrote:
>> On Thu, 2009-01-15 at 19:25 -0500, Dan McMahill wrote:
>>> Hello,
>>> I have played around a little with trying to use pstoedit to convert my 
>>> .eps files to .svg but haven't managed to get it to work right.
>>> At this point I'm a little unsure of the direction I should take.  Any 
>>> thoughts?
>> Hi Dan!
>> (Dan is another gEDA developer, on the PCB design side of things
>> usually).
>> I wonder if it would be worth teaching pstoedit a new backend which can
>> "render" to cairo calls in C. (As in.. produce generated source-code
>> fragments calling the cairo routines).
>> This would let you avoid the svg conversion and librsvg dependency.
> In general do people have good luck with pstoedit?  I've been playing 
> around with it and the plot-svg as well as the sk (skencil) output. 
> Neither seems to do much for producing a good result.  The .sk output 
> (viewed directly with skencil) seems to have problems with filled 
> polygons.  But maybe that is a skencil limitation.  The plot-svg output 
> is also not dealing well with filled polygons.

Since I knew nothing about pstoedit, haven't written anything with cairo 
until this week and don't use c++ I figured I might as well give it a 
shot making a cairo driver for pstoedit.  Turns out it was pretty easy 
and I'm able to use pstoedit to produce C code (that actually compiles 
and works no less) containing cairo calls to render the page.

I have a few issues left to deal with like I don't have the text code 
done but I'm getting real figures to make it through.


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