public float GetTypographicWidth(MathFont <char> font, AttributedGlyphRun <TFont, TGlyph> run)
{
int effectiveLength = GetEffectiveLength(run.Glyphs.ToArray());
float width = font.PointSize * effectiveLength * WidthPerCharacterPerFontSize +
run.KernedGlyphs.Sum(g => g.KernAfterGlyph);
return(width);
}
public (float[] Advances, float Total) GetAdvancesForGlyphs(MathFont <TGlyph> font, TGlyph[] glyphs)
{
var r = new float[glyphs.Length];
var total = 0f;
for (int i = 0; i < glyphs.Length; i++)
{
total += r[i] = GetEffectiveLength(glyphs[i]) * font.PointSize * WidthPerCharacterPerFontSize;
}
return(r, total);
}
public void TestGlyphBoundsWithM()
{
string america = "America";
MathFont <TGlyph> font = new MathFont <TGlyph>(10);
var provider = new TestGlyphBoundsProvider();
var glyphRun = new AttributedGlyphRun <MathFont <TGlyph>, TGlyph>
{
Font = font,
KernedGlyphs = america.ToCharArray().Select(c => new KernedGlyph <char>(c)).ToArray(),
};
var width = provider.GetTypographicWidth(font, glyphRun);
Assertions.ApproximatelyEqual(width, 40, 0.01);
}
public int GetUnitsPerEm(MathFont <char> font) => 1000;
public char[] FindGlyphs(MathFont <char> font, string str) => str.ToArray();
public char FindGlyphForCharacterAtIndex(MathFont <char> font, int index, string str)
{
return(str[index]);
}
