Pango.Matrix.get_font_scale_factors

### Method

# Pango Matrixget_font_scale_factors

since: 1.38

#### Declaration [src]

    void
    pango_matrix_get_font_scale_factors (
      const PangoMatrix* matrix,
      double* xscale,
      double* yscale
    )

#### Description [src]

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.

Available since: 1.38

#### Parameters

`matrix`

  Type: `PangoMatrix`

  A `PangoMatrix`.

  The argument can be `NULL`.

`xscale`

  Type: `double*`

  Output scale factor in the x direction.

  The argument will be set by the function.
  The argument can be `NULL`.

`yscale`

  Type: `double*`

  Output scale factor perpendicular to the x direction.

  The argument will be set by the function.
  The argument can be `NULL`.