Re: graphic figures and gtk and gtkprint

[Dov Grobgeld <dov grobgeld gmail com>]

Actually, if you have postscript, it should be pretty straightforward to
convert to cairo as they use the same drawing model. This is also the only
way to get proper cross

2009/1/15 Dan McMahill <mcmahill mtl mit edu>

> Hello,
>
> I have a gtk app I wrote about 12 years ago.  I've slowly evolved it.  I
> have about a dozen figures (graphics) that get displayed in some of the
> dialogs.  Two examples of these figures can be seen at
> http://wcalc.sf.net/tech.html
>
> The figures are drawn with tgif (a nice 2-d vector drawing program) and
> then I export several formats from that:
>
> - png for display on the web page I listed as well as for a CGI version of
> wcalc.
>
> - xpm for displaying in some of my gtk dialogs (see a screen shot at
> http://www.sf.net/gtk-wcalc.html
>
> - eps for printing.
>
> Currently my printing is done via a custom dialog box and it works by
> sending postscript code (generated by my code but it includes the eps
> versions of my graphics) to a file or to a program like lpr.  This is a hold
> over from the fact that wcalc was written originally for gtk-1.x
>
> Now that gtkprint is available I want to convert over so I can have better
> cross-platform printing support.
>
> I'm totally new to cairo and pango but have managed to get the basics
> working.  The problem is the figures.  I've tried loading my png files and
> rendering them with cairo.  The problem is that the bitmap version just
> doesn't look that hot (especially the text) when printed. Especially when
> compared to the postscript version.
>
> Does anyone have suggestions for the right way to deal with these graphics?
>  I still need png for the web pages, probably xpm for my gtk dialogs and
> some vector format for printing.  I understand there is a way with SVG to
> get the printing but I can't seem to get my figures into SVG short of
> re-drawing them in some other tool (inkscape maybe?). Programming the
> figures in cairo would make them  pretty and I guess those could go directly
> in the gtk forms and cairo could produce png's but the thought of of
> recreating a dozen or so figures like this with cairo code sounds a bit
> painful.
>
> At this point I'm a little unsure of the direction I should take.  Any
> thoughts?
>
> Thanks and sorry for a somewhat long question.
>
> -Dan
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