#!/usr/bin/env python

import cairo, pango, pangocairo

width = 0

while True:
   surf = cairo.ImageSurface (cairo.FORMAT_RGB24, max (0, width), 24)
   ctx = pangocairo.CairoContext (cairo.Context (surf))
   ctx.set_source_rgb (1, 1, 1)

   fontdesc = pango.FontDescription()
   fontdesc.set_family ("Sans")
   fontdesc.set_size (15 * pango.SCALE)

   lay = ctx.create_layout()
   lay.set_font_description (fontdesc)
   lay.set_markup ('Hallo, dies ist ein Text')

   if width == 0:
      extents = lay.get_pixel_extents ()[1]
      width = extents[2]
      continue

   ctx.move_to (0, (24.0 - extents[3]) / 2)
   ctx.show_layout (lay)
   break

surf.write_to_png ("out.png")