rasterVisualHeightScaleForFontFamily function

double rasterVisualHeightScaleForFontFamily(
  1. String? fontFamily
)

Scale that makes the letters of the font file look as large as the reference font's at the same font size. 1.0 when unknown.

Implementation

double rasterVisualHeightScaleForFontFamily(String? fontFamily) {
  final visualHeightEm = rasterVisualHeightEmForFontFamily(fontFamily);
  if (visualHeightEm == null || visualHeightEm <= 0) return 1.0;
  return kReferenceRasterVisualHeightEm / visualHeightEm;
}