Draws layout with the specified `PangoRenderer`.
This is equivalent to drawing the lines of the layout, at their respective positions relative to x, y.
| this |
a `PangoRenderer` |
| layout |
a `PangoLayout` |
| x |
X position of left edge of baseline, in user space coordinates in Pango units. |
| y |
Y position of left edge of baseline, in user space coordinates in Pango units. |