[ Version ( since = "1.38" ) ]
public void get_font_scale_factors (out double xscale, out double yscale)
Calculates the scale factor of a matrix on the width and height of the font.
That is, xscale is the scale factor in the direction of the X coordinate, and yscale is the scale factor in the
direction perpendicular to the vector that the X coordinate is mapped to.
Note that output numbers will always be non-negative.
| this |
a `PangoMatrix` |
| xscale |
output scale factor in the x direction |
| yscale |
output scale factor perpendicular to the x direction |