draw_trapezoid
Description:
public virtual void draw_trapezoid (RenderPart part, double y1_, double x11, double x21, double y2, double x12, double x22)
  
  Draws a trapezoid with the parallel sides aligned with the X axis using the given `PangoRenderer`; coordinates are in device space.
Parameters:
| this | a `PangoRenderer` | 
| part | type of object this trapezoid is part of | 
| y1_ | Y coordinate of top of trapezoid | 
| x11 | X coordinate of left end of top of trapezoid | 
| x21 | X coordinate of right end of top of trapezoid | 
| y2 | Y coordinate of bottom of trapezoid | 
| x12 | X coordinate of left end of bottom of trapezoid | 
| x22 | X coordinate of right end of bottom of trapezoid |