setting background color for an svg

[eyaler]

i am trying to set the background color to white when loading an svg, however Image() ignores it

[emcconville]

Vector graphics are a little different as the size & background color may need to be defined before reading the file.

from wand.image import Image
from wand.color import Color
from wand.api import library

with Image() as img:
    library.MagickSetSize(img.wand, 500, 500)
    with Color('WHITE') as bg:
        library.MagickSetBackgroundColor(img.wand, bg.resource)
    img.read(filename='the_image_file.svg')

Which should be the same as...

convert -size 500x500 -background WHITE the_image_file.svg ...

I think there's a few FIXME, or TODO notes in wand.image.Image.__init__() method to improve handling of this.