get_font_scale_factor
Description:
Returns the scale factor of a matrix on the height of the font.
That is, the scale factor in the direction perpendicular to the vector that the X coordinate is mapped to. If the scale in the X coordinate is needed as well, use [method@Pango.Matrix.get_font_scale_factors].
Parameters:
| this |
a `PangoMatrix`, may be null |
Returns:
|
the scale factor of this on the height of the font, or 1.0 if this is null. |