Enum GlyphFlags

Namespace: Egami.Fonts.Shaping

Assembly: Egami.Fonts.dll

What a shaped glyph says about breaking the text next to it, as HarfBuzz's glyph flags.

[Flags]
[SuppressMessage("Naming", "CA1711:Identifiers should not have incorrect suffix", Justification = "HarfBuzz's name for these flags (hb_glyph_flags_t), which shaping code knows.")]
public enum GlyphFlags

Fields

None = 0: The text can be broken before this glyph's cluster without shaping again.
SafeToInsertTatweel = 4: A tatweel (U+0640) can go before this glyph's cluster to lengthen the word without changing the shaping around it, as kashida justification needs; only set when ProduceSafeToInsertTatweel or ProduceSafeToInsertTatweel asks for it. Where it is set, UnsafeToBreak is too.
UnsafeToBreak = 1: Breaking the text before this glyph's cluster changes the shaping: shape the pieces again.
UnsafeToConcat = 2: Shaping the text before and after this point separately and joining the results may differ from shaping it whole.

Examples

// One run, one font, as HarfBuzz's hb_shape: ligatures, kerning and marks from the font's GSUB and GPOS.
var font = new Font(face, 24);
var glyphs = new GlyphBuffer();
string text = "office";
TextShaper.ShapeRun(text, 0, text.Length, font, new RunProperties { Script = Script.Latin }, glyphs);

for (int i = 0; i < glyphs.Count; i++)
{
    ushort id = glyphs.GlyphIds[i];
    int cluster = glyphs.Clusters[i];                 // index in text the glyph came from
    GlyphPosition position = glyphs.Positions[i];     // in the font's units (pixels here)
    bool breakable = (glyphs.Flags[i] & GlyphFlags.UnsafeToBreak) == 0;
}

float width = glyphs.Advance;

Table of Contents

Enum GlyphFlags

Fields

Examples