code: def _draw_mathtext(self, gc, x, y, s, prop, angle):
      ctx = gc.ctx
      (
          width,
          height,
          descent,
          glyphs,
          rects,
      ) = self._text2path.mathtext_parser.parse(s, self.dpi, prop)
  
      ctx.save()
      ctx.translate(x, y)
      if angle:
          ctx.rotate(np.deg2rad(-angle))
  
      for font, fontsize, idx, ox, oy in glyphs:
          ctx.new_path()
          ctx.move_to(ox, -oy)
          ctx.select_font_face(
              *_cairo_font_args_from_font_prop(ttfFontProperty(font))
          )
          ctx.set_font_size(self.points_to_pixels(fontsize))
          ctx.show_text(chr(idx))
  
      for ox, oy, w, h in rects:
          ctx.new_path()
          ctx.rectangle(ox, -oy, w, -h)
          ctx.set_source_rgb(0, 0, 0)
          ctx.fill_preserve()
  
      ctx.restore()
  
imports: import functools
  import gzip
  import math
  import numpy
  from ..None import _api, cbook, font_manager
  from matplotlib.backend_bases import _Backend, FigureCanvasBase, FigureManagerBase, GraphicsContextBase, RendererBase
  from matplotlib.font_manager import ttfFontProperty
  from matplotlib.path import Path
  from matplotlib.transforms import Affine2D
label_desc: Use image node_id 8 for calling the RendererCairo obj's underlying member method code with example usage: obj._draw_mathtext(gc, x, y, s, prop, angle) without return types