/
separator.go
66 lines (60 loc) · 1.79 KB
/
separator.go
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package ui
import (
"image"
"time"
"gioui.org/layout"
"gioui.org/op/clip"
"gioui.org/op/paint"
"gioui.org/unit"
"gioui.org/widget/material"
)
// SeparatorStyle configures the presentation of the unread indicator.
type SeparatorStyle struct {
Message material.LabelStyle
TextMargin layout.Inset
LineMargin layout.Inset
LineWidth unit.Dp
}
// UnreadSeparator fills in a SeparatorStyle with sensible defaults.
func UnreadSeparator(th *material.Theme) SeparatorStyle {
us := SeparatorStyle{
Message: material.Body1(th, "New"),
TextMargin: layout.UniformInset(unit.Dp(8)),
LineMargin: layout.UniformInset(unit.Dp(8)),
LineWidth: unit.Dp(1),
}
us.Message.Color = th.ContrastBg
return us
}
// DateSeparator makes a SeparatorStyle with indicating the transition to
// the date provided in the time.Time.
func DateSeparator(th *material.Theme, date time.Time) SeparatorStyle {
return SeparatorStyle{
Message: material.Body1(th, date.Format("Mon Jan 2, 2006")),
TextMargin: layout.UniformInset(unit.Dp(8)),
LineMargin: layout.UniformInset(unit.Dp(8)),
LineWidth: unit.Dp(2),
}
}
// Layout the Separator.
func (u SeparatorStyle) Layout(gtx layout.Context) layout.Dimensions {
layoutLine := func(gtx layout.Context) layout.Dimensions {
return u.LineMargin.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
size := image.Point{
X: gtx.Constraints.Max.X,
Y: gtx.Dp(u.LineWidth),
}
paint.FillShape(gtx.Ops, u.Message.Color, clip.Rect(image.Rectangle{Max: size}).Op())
return layout.Dimensions{Size: size}
})
}
return layout.Flex{
Alignment: layout.Middle,
}.Layout(gtx,
layout.Flexed(.5, layoutLine),
layout.Rigid(func(gtx layout.Context) layout.Dimensions {
return u.TextMargin.Layout(gtx, u.Message.Layout)
}),
layout.Flexed(.5, layoutLine),
)
}