utils.py 文件源码

def convert_svg2png(infile, outfile, w, h):
    """
        Converts svg files to png using Cairosvg or Inkscape
        @file_path : String; the svg file absolute path
        @dest_path : String; the png file absolute path
    """
    if use_inkscape:
        p = Popen(["inkscape", "-z", "-f", infile, "-e", outfile,
                   "-w", str(w), "-h", str(h)],
                  stdout=PIPE, stderr=PIPE)
        output, err = p.communicate()
    else:
        handle = Rsvg.Handle()
        svg = handle.new_from_file(infile)
        dim = svg.get_dimensions()

        img = cairo.ImageSurface(cairo.FORMAT_ARGB32, w, h)
        ctx = cairo.Context(img)
        ctx.scale(w / dim.width, h / dim.height)
        svg.render_cairo(ctx)

        png_io = BytesIO()
        img.write_to_png(png_io)
        with open(outfile, 'wb') as fout:
            fout.write(png_io.getvalue())
        svg.close()
        png_io.close()
        img.finish()