Class TtfHmtxTable

Parsed OpenType "hmtx" table (horizontal metrics). Stores advance width and left side-bearing for every glyph. The first numberOfHMetrics glyphs each have their own advance width; glyphs beyond that index share the last advance width value. Ref: OpenType spec §5.2.4.

Inheritance

object

TtfTableBase

TtfHmtxTable

Inherited Members

TtfTableBase.Tag

TtfTableBase.RawBytes

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: DRIT.Drawing.Font.Ttf.Tables

Assembly: DRIT.Drawing.dll

Syntax

public sealed class TtfHmtxTable : TtfTableBase

Fields

TableTag

The table tag for the hmtx table.

Declaration

public const string TableTag = "hmtx"

Field Value

Type	Description
string

Methods

GetAdvanceWidth(int)

Returns the advance width for glyphIndex, in design units. Glyphs with index ≥ numberOfHMetrics return the last recorded advance width.

Declaration

public ushort GetAdvanceWidth(int glyphIndex)

Parameters

Type	Name	Description
int	glyphIndex

Returns

Type	Description
ushort

GetLsb(int)

Returns the left side-bearing for glyphIndex, in design units.

Declaration

public short GetLsb(int glyphIndex)

Parameters

Type	Name	Description
int	glyphIndex

Returns

Type	Description
short

Parse(byte[], ushort, ushort)

Parses the "hmtx" table from its raw bytes.

Declaration

public static TtfHmtxTable Parse(byte[] rawBytes, ushort numberOfHMetrics, ushort numGlyphs)

Parameters

Type	Name	Description
byte[]	rawBytes	Raw table data.
ushort	numberOfHMetrics	Value from NumberOfHMetrics. Determines how many full (width+lsb) entries are present.
ushort	numGlyphs	Total glyph count from NumGlyphs. Determines how many extra LSB-only entries follow.

Returns

Type	Description
TtfHmtxTable