CharacterToGlyphMap Struct

Definition

Namespace:Avalonia.Media.Fonts.Tables.Cmap

Assembly:Avalonia.Base

Package:Avalonia

Source:CharacterToGlyphMap.cs

Provides a read-only mapping from Unicode code points to glyph identifiers for a font's character map (cmap) table.

public struct CharacterToGlyphMap

Inheritance: ValueType -> CharacterToGlyphMap

Remarks

This struct enables efficient lookup of glyph IDs corresponding to Unicode code points, supporting both Format 4 (BMP) and Format 12 (Unicode full repertoire) cmap subtables.

Methods

Name	Description
ContainsGlyph	Determines whether the character map contains a glyph for the specified Unicode code point.
GetGlyph	Retrieves the glyph index that corresponds to the specified Unicode code point.
GetGlyphs	No summary available.
GetMappedRanges	Returns an enumerator that iterates through all code point ranges mapped by this instance.
TryGetGlyph	No summary available.

ContainsGlyph Method

Determines whether the character map contains a glyph for the specified Unicode code point.

public bool ContainsGlyph(int codePoint)

Parameters

codePoint int

The Unicode code point to check for the presence of a corresponding glyph.

Returns

bool

true if a glyph exists for the specified code point; otherwise, false.

GetGlyph Method

Retrieves the glyph index that corresponds to the specified Unicode code point.

public ushort GetGlyph(int codePoint)

Parameters

codePoint int

The Unicode code point for which to obtain the glyph index.

Returns

ushort

The glyph index associated with the specified code point. Returns 0 if the code point is not mapped to any glyph.

GetGlyphs Method

public void GetGlyphs(ReadOnlySpan<int> codePoints, Span<ushort> glyphIds)

Parameters

codePoints ReadOnlySpan<int>

glyphIds Span<ushort>

GetMappedRanges Method

Returns an enumerator that iterates through all code point ranges mapped by this instance.

public Avalonia.Media.Fonts.Tables.Cmap.CodepointRangeEnumerator GetMappedRanges()

Returns

Avalonia.Media.Fonts.Tables.Cmap.CodepointRangeEnumerator

A Avalonia.Media.Fonts.Tables.Cmap.CodepointRangeEnumerator that can be used to enumerate the mapped code point ranges.

TryGetGlyph Method

public bool TryGetGlyph(int codePoint, ushort& glyphId)

Parameters

codePoint int

glyphId ushort&

Returns

bool

Properties

Name	Description
Item	No summary available.

Item Property

public ushort Item { get; set; }