core

type Alignment int

type ChartGraphic interface {
	Context() Context
	Render(w io.Writer) error
}

type ChartType int

type CommonGraphic interface {
	Draw(canvas *svg.SVG) error
}

type Context interface {
	CanvasSize() (int, int)
	Title() string
	TitleFontSize() int
	ChartSize() (int, int)
	ChartOffset() (int, int)
	Labels() []string
	LabelFontSize() int
	LabelFontColor() Hex
	SeriesCount() int
	Series(index int) Series
	FirstSeries() Series
	SeriesColors(index int) []Hex
	LegendTitle() string
	LegendPosition() Position
	YAxisTitle() string
	XAxisTitle() string
}

type Hex string

type Position int

type RGB struct {
	R int
	G int
	B int
}

type Series interface {
	Name() string
	Data() []interface{}
	Float64Data() ([]float64, error)
	Colors() []Hex
}

type SeriesGroup []*Series