text

type Alignment uint8

type Face interface {
	Layout(ppem fixed.Int26_6, txt io.Reader, opts LayoutOptions) ([]Line, error)
	Shape(ppem fixed.Int26_6, str []Glyph) op.CallOp
	Metrics(ppem fixed.Int26_6) font.Metrics
}

type Font struct {
	Typeface Typeface
	Variant  Variant
	Size     unit.Value
	Style    Style
	// Weight is the text weight. If zero, Normal is used instead.
	Weight Weight
}

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

type Glyph struct {
	Rune    rune
	Advance fixed.Int26_6
}

type LayoutOptions struct {
	// MaxWidth is the available width of the layout.
	MaxWidth int
}

type Line struct {
	Layout []Glyph
	// Len is the length in UTF8 bytes of the line.
	Len int
	// Width is the width of the line.
	Width fixed.Int26_6
	// Ascent is the height above the baseline.
	Ascent fixed.Int26_6
	// Descent is the height below the baseline, including
	// the line gap.
	Descent fixed.Int26_6
	// Bounds is the visible bounds of the line.
	Bounds fixed.Rectangle26_6
}

type Shaper interface {
	// Layout a text according to a set of options.
	Layout(c unit.Converter, font Font, txt io.Reader, opts LayoutOptions) ([]Line, error)
	// Shape a line of text and return a clipping operation for its outline.
	Shape(c unit.Converter, font Font, layout []Glyph) op.CallOp

	// LayoutString is like Layout, but for strings..
	LayoutString(c unit.Converter, font Font, str string, opts LayoutOptions) []Line
	// ShapeString is like Shape for lines previously laid out by LayoutString.
	ShapeString(c unit.Converter, font Font, str string, layout []Glyph) op.CallOp

	// Metrics returns the font metrics for font.
	Metrics(c unit.Converter, font Font) font.Metrics
}

type Style int

type Typeface string

type Variant string

type Weight int