import cairo
import rsvg
import xml.etree.ElementTree as ET

def convertSVGToPNG(src, dst, dstWidth, dstHeight, srcWidth, srcHeight, style,layerID):   
    ET.register_namespace("","http://www.w3.org/2000/svg")

    tree = ET.parse(src)
    root = tree.getroot()

    for layer in root.findall('./{http://www.w3.org/2000/svg}g'):
        name = layer.get('{http://www.inkscape.org/namespaces/inkscape}label')
        if name in layerID :
            for path in layer.findall('./{http://www.w3.org/2000/svg}path'):
                path.set("style",style)         
        else :
            root.remove(layer)

    img =  cairo.ImageSurface(cairo.FORMAT_ARGB32,  dstWidth, dstHeight)
    ctx = cairo.Context(img)

    width_ratio = float(dstWidth) / float(srcWidth)
    height_ratio = float(dstHeight) / float(srcHeight)
    ctx.scale(width_ratio, height_ratio)

    handler= rsvg.Handle(None,str(ET.tostring(root, encoding='utf8', method='xml')))
    handler.render_cairo(ctx)

    img.write_to_png(dst)

def convertSVGToPNG2(src, dst, dstWidth, dstHeight, srcWidth, srcHeight, style,layerID):   
    ET.register_namespace("","http://www.w3.org/2000/svg")

    tree = ET.parse(src)
    root = tree.getroot()

    for path in root.findall('./{http://www.w3.org/2000/svg}path'):
        path.set("style",style)         

    img =  cairo.ImageSurface(cairo.FORMAT_ARGB32,  dstWidth, dstHeight)
    ctx = cairo.Context(img)

    width_ratio = float(dstWidth) / float(srcWidth)
    height_ratio = float(dstHeight) / float(srcHeight)
    ctx.scale(width_ratio, height_ratio)

    handler= rsvg.Handle(None,str(ET.tostring(root, encoding='utf8', method='xml')))
    handler.render_cairo(ctx)

    img.write_to_png(dst)