Re: generating SVG figure

[Geoff Richards <Ni1phahs@...>]

On Sun, Nov 02, 2008 at 05:34:34PM +0200, Asko Kauppi wrote:
>
> I'm using oocairo binding for PDF output.  Should work easily for SVG as 
> well.

I haven't done extensive testing with SVG output, but it seems to work.
I'm adding an example program which outputs SVG to the next release,
which I've included below (it should work with the current release as well).

-----------------
-- This example is just here so that you can copy and paste the few lines
-- of code you need to output SVG.  It doesn't draw anything interesting.

local Cairo = require "oocairo"

-- This check isn't normally necessary, but it can be used if you want to
-- write a program that works with or without SVG support.  I think most
-- Cairo installations will have the SVG surface feature enabled.
if not Cairo.HAS_SVG_SURFACE then
    error("This example requires a Cairo library with SVG support enabled")
end

-- The width and height given here are measured in points.
local surface = Cairo.svg_surface_create("simple-svg.svg", 300, 200)
local cr = Cairo.context_create(surface)

cr:set_source_rgb(1, 0, 1)   -- purple

cr:move_to(100, 10)          -- triangle
cr:line_to(300, 150)
cr:line_to(50, 100)
cr:fill()

-- This forces the output to be written right away, although it'll
-- happen automatically when the surface gets GCed anyway.  You only
-- need to call it explicitly if you want to ensure the output file
-- appears as soon as you've finished drawing on it.
surface:finish()