Creating colorful Google Markers with python for using in CGI.

marker.py

#! /usr/bin/python

from xml.dom import minidom
import os
import sys
import cairo
import rsvg

markerDocument = minidom.parse('marker.svg')

svg = markerDocument.getElementsByTagName("svg")[0]

imgHeight = float(svg.attributes['height'].value)
imgWidth = float(svg.attributes['width'].value)

color = os.environ['QUERY_STRING']
if (len(color) != 6):
    color = "00FF00"

style = "clip-rule:evenodd;fill-rule:evenodd;stroke:#000000;stroke-width:0.58006144;stroke-miterlimit:10;fill-opacity:1;"

style += "fill:#"+color

markerPath = markerDocument.getElementsByTagName("path")[0]

markerPath.setAttribute("style", style)

svgXmlData = markerDocument.toxml()

img = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(imgWidth), int(imgHeight))

ctx = cairo.Context(img)

handle = rsvg.Handle(None, svgXmlData)

handle.render_cairo(ctx)

print "Content-type: image/png\n"
img.write_to_png(sys.stdout)

marker.svg