Interface IFontMetrics
Provides access to horizontal and typographic font metrics in design units.
Namespace: DRIT.Drawing.Font.Core
Assembly: DRIT.Drawing.dll
Syntax
public interface IFontMetricsProperties
Ascender
Maximum ascender value above the baseline, in design units (from hhea.Ascender).
Declaration
double Ascender { get; }Property Value
| Type | Description |
|---|---|
| double |
Descender
Maximum descender value below the baseline, in design units (from hhea.Descender, typically negative).
Declaration
double Descender { get; }Property Value
| Type | Description |
|---|---|
| double |
LineGap
Line gap (leading) recommended by the font, in design units (from hhea.LineGap).
Declaration
double LineGap { get; }Property Value
| Type | Description |
|---|---|
| double |
StrikeoutPosition
Distance from the baseline to the top of the strikeout stroke, in design units (from OS/2 yStrikeoutPosition). Positive values are above the baseline.
Declaration
double StrikeoutPosition { get; }Property Value
| Type | Description |
|---|---|
| double |
StrikeoutSize
Thickness of the strikeout stroke, in design units (from OS/2 yStrikeoutSize).
Declaration
double StrikeoutSize { get; }Property Value
| Type | Description |
|---|---|
| double |
TypoAscender
Typographic ascender from the OS/2 sTypoAscender field, in design units.
Declaration
double TypoAscender { get; }Property Value
| Type | Description |
|---|---|
| double |
TypoDescender
Typographic descender from the OS/2 sTypoDescender field, in design units (typically negative).
Declaration
double TypoDescender { get; }Property Value
| Type | Description |
|---|---|
| double |
UnderlinePosition
Offset of the top of the underline stroke from the baseline, in design units (from the 'post' table). Negative values place the underline below the baseline.
Declaration
double UnderlinePosition { get; }Property Value
| Type | Description |
|---|---|
| double |
UnderlineThickness
Thickness of the underline stroke, in design units (from the 'post' table).
Declaration
double UnderlineThickness { get; }Property Value
| Type | Description |
|---|---|
| double |
UnitsPerEM
Number of design units that make up one em square.
Declaration
double UnitsPerEM { get; }Property Value
| Type | Description |
|---|---|
| double |
Methods
GetGlyphWidth(GlyphId)
Returns the horizontal advance width of the glyph identified by
glyphId, in design units.
Declaration
double GetGlyphWidth(GlyphId glyphId)Parameters
| Type | Name | Description |
|---|---|---|
| GlyphId | glyphId |
Returns
| Type | Description |
|---|---|
| double |