Re: [Gimp-developer] converting svg to png with black background

[Ofnuts <ofnuts laposte net>]

On 09/20/2013 08:01 PM, Matt Becker wrote:
> Hi,
>
> not sure if this is the right mailing list, I'm trying to convert svg to png (which is working), I just need 
> to get the background black.
>
> Here's my scm script:
>
> (define (svg-to-raster infile
>                         outfile
>                         resolution
>                         xmax
>                         ymax)
>    (let* ((image (car (file-svg-load
>                        RUN-NONINTERACTIVE
>                        infile
>                        ""
>                        resolution
>                        (- 0 xmax)
>                        (- 0 ymax)
>                        0
>                        )
>                       )
>                  )
>           (drawable (car (gimp-image-get-active-layer image)))
> )
>      (plug-in-autocrop RUN-NONINTERACTIVE image drawable)
>      (gimp-file-save RUN-NONINTERACTIVE image drawable outfile outfile)
>      (gimp-image-delete image)
>      )
>    )
>
>
> I want a non-antialiased png with black background as the final result, currently background is transparent.
> See attached for my original svg image. It's converting fine from shell (other than black background) via:
>
> gimp -i -b '( svg-to-raster "special_areas.svg" "special_areas.png" 72 0 0)' -b '(gimp-quit 0)'

Completely different solution;

Use gimp-vectors-import-from-file to import a path form a SVG, then 
create a layer, fill with black, and stroke the path after setting the 
foreground to the color of your choice. However this will get your 
something antialiased. The same without anti-aliasing: stroke the path 
on  a transparent layer, then  threshold the alpha channel.

Improvement on your solution:

- Once you have the path on the transparent layer, alpha lock the layer 
and bucket fill with the final color
- Inset black layer below.