Documentation

Overview

    Package opentype implements text layout and shaping for OpenType files.

    Index

    Constants

    This section is empty.

    Variables

    This section is empty.

    Functions

    This section is empty.

    Types

    type Collection

    type Collection struct {
    	// contains filtered or unexported fields
    }

      Collection is a collection of one or more fonts. When used as a text.Face, each rune will be assigned a glyph from the first font in the collection that supports it.

      func ParseCollection

      func ParseCollection(src []byte) (*Collection, error)

        ParseCollection parses an SFNT font collection, such as TTC or OTC data, from a []byte data source.

        If passed data for a single font, a TTF or OTF instead of a TTC or OTC, it will return a collection containing 1 font.

        func ParseCollectionReaderAt

        func ParseCollectionReaderAt(src io.ReaderAt) (*Collection, error)

          ParseCollectionReaderAt parses an SFNT collection, such as TTC or OTC data, from an io.ReaderAt data source.

          If passed data for a single font, a TTF or OTF instead of a TTC or OTC, it will return a collection containing 1 font.

          func (*Collection) Font

          func (c *Collection) Font(i int) (*Font, error)

            Font returns the i'th font in the collection.

            func (*Collection) Layout

            func (c *Collection) Layout(ppem fixed.Int26_6, maxWidth int, txt io.Reader) ([]text.Line, error)

            func (*Collection) NumFonts

            func (c *Collection) NumFonts() int

              NumFonts returns the number of fonts in the collection.

              func (*Collection) Shape

              func (c *Collection) Shape(ppem fixed.Int26_6, str text.Layout) op.CallOp

              type Font

              type Font struct {
              	// contains filtered or unexported fields
              }

                Font implements text.Face. Its methods are safe to use concurrently.

                func Parse

                func Parse(src []byte) (*Font, error)

                  NewFont parses an SFNT font, such as TTF or OTF data, from a []byte data source.

                  func (*Font) Layout

                  func (f *Font) Layout(ppem fixed.Int26_6, maxWidth int, txt io.Reader) ([]text.Line, error)

                  func (*Font) Metrics

                  func (f *Font) Metrics(ppem fixed.Int26_6) font.Metrics

                  func (*Font) Shape

                  func (f *Font) Shape(ppem fixed.Int26_6, str text.Layout) op.CallOp

                  Source Files