timeline

type Entry struct {
	Avatar image.Image
	Series []Series
}

type EntryBuilder struct {
	Entry
}

type Layout struct {
	HeadlineWidth float64
	TimelineWidth float64
	EntryHeight   float64
}

type Section struct {
	Start time.Time
	End   time.Time
	Alpha float64 // 0(transparent) to 1(opaque)
}

type SectionOpt func(*Section)

type Series struct {
	FillingFactor float64
	Color         color.Color
	Sections      []Section
}

type SeriesBuilder struct {
	Series
}

type Tics struct {
	Interval time.Duration
	Color    color.Color
	Label    design.TextBox
}

type Timeline struct {
	Title     design.TextBox
	StartTime time.Time
	Indicator time.Time
	EndTime   time.Time
	Entries   []Entry
	Margin    design.EdgeInsets
	Padding   design.EdgeInsets
	Layout    Layout
	MainTics  Tics
	SubTics   Tics
}

type TimelineBuilder struct {
	Timeline
}