public void Measure(char[] textBuffer, int startAt, int len, out float width, out float height)
{
glyphLayout.Typeface = this.CurrentTypeFace;
var scale = CurrentTypeFace.CalculateToPixelScaleFromPointSize(this.FontSizeInPoints);
MeasuredStringBox strBox;
glyphLayout.MeasureString(textBuffer, startAt, len, out strBox, scale);
width = strBox.width;
height = strBox.CalculateLineHeight();
}
public MeasuredStringBox Measure(char[] textBuffer, int startAt, int len)
{
glyphLayout.Typeface = this.CurrentTypeFace;
float pxscale = CurrentTypeFace.CalculateScaleToPixelFromPointSize(this.FontSizeInPoints);
glyphLayout.Layout(textBuffer, startAt, len);
_reusableGlyphPlanList.Clear();
IGlyphPositions glyphPositions = glyphLayout.ResultUnscaledGlyphPositions;
GlyphLayoutExtensions.GenerateGlyphPlan(glyphLayout.ResultUnscaledGlyphPositions,
pxscale,
false, _reusableGlyphPlanList);
return(new MeasuredStringBox(
_reusableGlyphPlanList.AccumAdvanceX * pxscale,
CurrentTypeFace.Ascender * pxscale,
CurrentTypeFace.Descender * pxscale,
CurrentTypeFace.LineGap * pxscale,
Typography.OpenFont.Extensions.TypefaceExtensions.CalculateRecommendLineSpacing(CurrentTypeFace) * pxscale));
}