opentype

package module

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Versions in this module

v0

v0.5.0

Jul 28, 2026

Changes in this version

type Face

+ func (fc *Face) AdvanceIndex(gid GlyphIndex) int

+ func (fc *Face) AdvanceIndexUnits(gid GlyphIndex) float64

+ func (fc *Face) VerticalAdvanceIndex(gid GlyphIndex) int

type Font

+ func (f *Font) Ascent() int

+ func (f *Font) CapHeight() int

+ func (f *Font) Descent() int

+ func (f *Font) Flags() int

+ func (f *Font) FontBBox() (xMin, yMin, xMax, yMax int)

+ func (f *Font) Instance(coords map[string]float64) (*Font, error)

+ func (f *Font) InstanceBytes(coords map[string]float64) ([]byte, error)

+ func (f *Font) IsFixedPitch() bool

+ func (f *Font) IsItalic() bool

+ func (f *Font) IsSerif() bool

+ func (f *Font) ItalicAngle() float64

+ func (f *Font) LineGap() int

+ func (f *Font) StemV() int

+ func (f *Font) SubsetCFF(gids []GlyphIndex) ([]byte, error)

+ func (f *Font) SubsetTrueType(gids []GlyphIndex) (data []byte, oldToNew map[GlyphIndex]GlyphIndex, err error)

+ func (f *Font) Table(tag string) (data []byte, ok bool)

+ func (f *Font) TableTags() []string

+ func (f *Font) UnitsPerEm() int

+ func (f *Font) WeightClass() int

+ func (f *Font) WidthClass() int

+ func (f *Font) XHeight() int

v0.4.0

Jul 28, 2026

Changes in this version

type Face

+ func (fc *Face) ItalicCorrection(gid GlyphIndex) int

+ func (fc *Face) MathConstant(which MathConstant) int

+ func (fc *Face) MathKern(gid GlyphIndex, corner MathKernCorner, correctionHeight int) int

+ func (fc *Face) MathVariants(gid GlyphIndex, vertical bool) ([]MathVariant, *MathAssembly)

+ func (fc *Face) TopAccentAttachment(gid GlyphIndex) (int, bool)

type Font

+ func (f *Font) HasMath() bool

+ func (f *Font) IsExtendedShapeGlyph(gid GlyphIndex) bool

+ type MathAssembly struct

+ ItalicsCorrection int

+ MinConnectorOverlap int

+ Parts []MathAssemblyPart

+ type MathAssemblyPart struct

+ EndConnector int

+ Extender bool

+ FullAdvance int

+ Glyph GlyphIndex

+ StartConnector int

+ type MathConstant int

+ const AccentBaseHeight

+ const AxisHeight

+ const DelimitedSubFormulaMinHeight

+ const DisplayOperatorMinHeight

+ const FlattenedAccentBaseHeight

+ const FractionDenomDisplayStyleGapMin

+ const FractionDenominatorDisplayStyleShiftDown

+ const FractionDenominatorGapMin

+ const FractionDenominatorShiftDown

+ const FractionNumDisplayStyleGapMin

+ const FractionNumeratorDisplayStyleShiftUp

+ const FractionNumeratorGapMin

+ const FractionNumeratorShiftUp

+ const FractionRuleThickness

+ const LowerLimitBaselineDropMin

+ const LowerLimitGapMin

+ const MathLeading

+ const OverbarExtraAscender

+ const OverbarRuleThickness

+ const OverbarVerticalGap

+ const RadicalDegreeBottomRaisePercent

+ const RadicalDisplayStyleVerticalGap

+ const RadicalExtraAscender

+ const RadicalKernAfterDegree

+ const RadicalKernBeforeDegree

+ const RadicalRuleThickness

+ const RadicalVerticalGap

+ const ScriptPercentScaleDown

+ const ScriptScriptPercentScaleDown

+ const SkewedFractionHorizontalGap

+ const SkewedFractionVerticalGap

+ const SpaceAfterScript

+ const StackBottomDisplayStyleShiftDown

+ const StackBottomShiftDown

+ const StackDisplayStyleGapMin

+ const StackGapMin

+ const StackTopDisplayStyleShiftUp

+ const StackTopShiftUp

+ const StretchStackBottomShiftDown

+ const StretchStackGapAboveMin

+ const StretchStackGapBelowMin

+ const StretchStackTopShiftUp

+ const SubSuperscriptGapMin

+ const SubscriptBaselineDropMin

+ const SubscriptShiftDown

+ const SubscriptTopMax

+ const SuperscriptBaselineDropMax

+ const SuperscriptBottomMaxWithSubscript

+ const SuperscriptBottomMin

+ const SuperscriptShiftUp

+ const SuperscriptShiftUpCramped

+ const UnderbarExtraDescender

+ const UnderbarRuleThickness

+ const UnderbarVerticalGap

+ const UpperLimitBaselineRiseMin

+ const UpperLimitGapMin

+ type MathKernCorner int

+ const MathKernBottomLeft

+ const MathKernBottomRight

+ const MathKernTopLeft

+ const MathKernTopRight

+ type MathVariant struct

+ Advance int

+ Glyph GlyphIndex

v0.3.8

Jul 28, 2026

v0.3.7

Jul 28, 2026

Changes in this version

type Face

+ func (fc *Face) SetStemDarkening(on bool)

v0.3.6

Jul 28, 2026

v0.3.5

Jul 28, 2026

v0.3.4

Jul 28, 2026

v0.3.3

Jul 28, 2026

Changes in this version

type Face

+ func (fc *Face) GlyphMaskIndex(gid GlyphIndex, x, y int) (bounds image.Rectangle, mask *image.Alpha, maskp image.Point, advance int, ...)

v0.3.2

Jul 28, 2026

v0.3.1

Jul 28, 2026

Changes in this version

type Face

+ func (fc *Face) Font() *Font

+ func (fc *Face) Scale() float64

+ type FeatureApp struct

+ Positions []bool

+ Tag string

type Font

+ func (f *Font) GPOS() *GPOS

+ func (f *Font) GSUB() *GSUB

+ func (f *Font) GlyphAdvance(g GlyphIndex) int

+ type GPOS = gpos

+ type GSUB = gsub

v0.3.0

Jul 28, 2026

Changes in this version

type Face

+ func (fc *Face) ShapePositioned(text string, features ...string) []PositionedGlyph

+ func (fc *Face) VerticalAdvance(r rune) int

+ func (fc *Face) VerticalMetrics() (ascent, descent, lineGap int)

+ func (fc *Face) VerticalOrigin(r rune) (int, bool)

type Font

+ func (f *Font) HasVerticalMetrics() bool

+ type GlyphPosition struct

+ XAdvance int

+ XOffset int

+ YAdvance int

+ YOffset int

+ type PositionedGlyph struct

+ Glyph GlyphIndex

+ XAdvance int

+ XOffset int

+ YOffset int

v0.2.0

Jul 28, 2026

Changes in this version

+ type Axis struct

+ Default float64

+ Flags uint16

+ Max float64

+ Min float64

+ NameID uint16

+ Tag string

type Face

+ func (fc *Face) Kern(prev, r rune) int

+ func (fc *Face) MeasureKerned(s string) int

+ func (fc *Face) SetHinting(on bool)

+ func (fc *Face) SetVariation(coords map[string]float64)

+ func (fc *Face) Shape(text string, features ...string) []GlyphIndex

type Font

+ func (f *Font) Axes() []Axis

+ func (f *Font) GlyphIndexVariation(r, vs rune) (GlyphIndex, bool)

+ func (f *Font) InstancePoints(gid int, coords map[string]float64) ([]contour, error)

+ func (f *Font) NamedInstances() []NamedInstance

+ func (f *Font) NormalizeCoords(user map[string]float64) []int16

+ type Kerner struct

+ func (kn *Kerner) Kerning(left, right GlyphIndex) int

+ type NamedInstance struct

+ Coordinates map[string]float64

+ Flags uint16

+ PostScriptNameID uint16

+ SubfamilyNameID uint16

v0.1.0

Jul 27, 2026

Changes in this version

+ type Face struct

+ func (fc *Face) Advance(r rune) int

+ func (fc *Face) GlyphMask(r rune, x, y int) (bounds image.Rectangle, mask *image.Alpha, maskp image.Point, advance int, ...)

+ func (fc *Face) Measure(s string) int

+ func (fc *Face) Metrics() Metrics

+ type Font struct

+ func Parse(b []byte) (*Font, error)

+ func (f *Font) GlyphIndex(r rune) (GlyphIndex, bool)

+ func (f *Font) NewFace(sizePx int) *Face

+ func (f *Font) NumGlyphs() int

+ type GlyphIndex uint16

+ type Metrics struct

+ Ascent int

+ Descent int

+ Height int

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