Ruby and SVG

ruby-talk
1

Dear ALL,

I'm an absolutely beginner to Ruby.
But, besides the language itself (which seems quite interesting to
me ) it is importnat to find out what support is available for XML
and in particular for SVG. I served a bit around "Ruby SVG" and my
impression is that there is maybe no active development.

I have to create a lot of technical drawings and charts.
Another point is the renderer and may be in addition an interactive
canvas.

Can anybody feedback some comment on this.

Thanks a lot

Rolf

2

2008/11/23 RolfK <Rolf.Kemper@...>:

Dear ALL,

I'm an absolutely beginner to Ruby.
But, besides the language itself (which seems quite interesting to
me ) it is importnat to find out what support is available for XML
and in particular for SVG. I served a bit around "Ruby SVG" and my
impression is that there is maybe no active development.

I have to create a lot of technical drawings and charts.
Another point is the renderer and may be in addition an interactive
canvas.

Take a look at RMagick and RVG.

Regards,

Serabe

···

--
http://www.serabe.com

3

Hi,

In <dbc50453-da74-4c26-bec4-e0c78a3a7231@3g2000yqs.googlegroups.com>
  "Ruby and SVG" on Sun, 23 Nov 2008 19:25:46 +0900,

I'm an absolutely beginner to Ruby.
But, besides the language itself (which seems quite interesting to
me ) it is importnat to find out what support is available for XML
and in particular for SVG. I served a bit around "Ruby SVG" and my
impression is that there is maybe no active development.

I have to create a lot of technical drawings and charts.
Another point is the renderer and may be in addition an interactive
canvas.

Can anybody feedback some comment on this.

You can use rcairo that is the Ruby bindings for cairo to
output SVG.

  rcairo: http://cairo.rubyforge.org/
  cairo: http://cairographics.org/

You can use Ruby/RSVG that is the Ruby bindings for librsvg
to render SVG:

  Ruby/RSVG: http://ruby-gnome2.sourceforge.jp/hiki.cgi?Ruby%2FRSVG
  librsvg: http://librsvg.sourceforge.net/
           (News in the page is outdated.)

Wikipedia also uses librsvg:
  librsvg - Wikipedia

Thanks,

···

RolfK <Rolf.Kemper@eu.necel.com> wrote:
--
kou

4

RolfK wrote:

I'm an absolutely beginner to Ruby.
But, besides the language itself (which seems quite interesting to
me ) it is importnat to find out what support is available for XML
and in particular for SVG. I served a bit around "Ruby SVG" and my
impression is that there is maybe no active development.

I have to create a lot of technical drawings and charts.
Another point is the renderer and may be in addition an interactive
canvas.

Can anybody feedback some comment on this.

libxml-ruby is going to handle SVG fine - but low level, without awareness of all the nodes' meanings.

You need to think first of a high-level editor that is already written. Inkscape, for example, is open-source, and has Ruby bindings. So, IIRC, does Google Sketchup.

Then write unit tests for everything you do. I would use XPath in those tests to spot-check the SVG contents...

···

--
   Phlip

5

RolfK wrote:

Dear ALL,

I'm an absolutely beginner to Ruby.
But, besides the language itself (which seems quite interesting to
me ) it is importnat to find out what support is available for XML
and in particular for SVG. I served a bit around "Ruby SVG" and my
impression is that there is maybe no active development.

I have to create a lot of technical drawings and charts.
Another point is the renderer and may be in addition an interactive
canvas.

JRuby + Batik!

6

There's a new gem called Rasem.


It's very easy to use and generates SVG directly. It's still in Alpha
release but it looks promising.

···

--
Posted via http://www.ruby-forum.com/.

7

Philip,

thank you for your suggestion.
Up to today I have created my SVGs out of a data xml by xslt/xpath
2.0. But this was not interactive, as displaying the result took a
renderer.
If I understand your idea right, I could use Inkscape to create all
the shape objects out of my Ruby program.
Does the binding also handle mouse events (e.g. created by mouseup/
down) on an Inksacpe SVG object ?

Phlip schrieb:

···

RolfK wrote:

> I'm an absolutely beginner to Ruby.
> But, besides the language itself (which seems quite interesting to
> me ) it is importnat to find out what support is available for XML
> and in particular for SVG. I served a bit around "Ruby SVG" and my
> impression is that there is maybe no active development.
>
> I have to create a lot of technical drawings and charts.
> Another point is the renderer and may be in addition an interactive
> canvas.
>
> Can anybody feedback some comment on this.

libxml-ruby is going to handle SVG fine - but low level, without awareness of
all the nodes' meanings.

You need to think first of a high-level editor that is already written.
Inkscape, for example, is open-source, and has Ruby bindings. So, IIRC, does
Google Sketchup.

Then write unit tests for everything you do. I would use XPath in those tests to
spot-check the SVG contents...

--
   Phlip