48 lines
1.5 KiB
Go
48 lines
1.5 KiB
Go
package mujica
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import (
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"fmt"
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"github.com/egoist/mygo/ui"
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"mujicaui/icons"
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"mujicaui/internal"
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"mujicaui/theme"
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)
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// ScrollToBottomButton shows while away is true, with the unread count; click it to return to the end.
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// While hidden it returns an empty element whose Clicked is false.
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func ScrollToBottomButton(c *ui.Context, away bool, unread int) *ui.Element {
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if unread < 0 {
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panic("mujica: ScrollToBottomButton unread must not be negative")
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}
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if !away {
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return ui.Box(c).Absolute().Invisible()
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}
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k := Tokens(c)
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u := Density(c).Unit()
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label := msg(c, "scroll_to_bottom_button.label")
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if unread > 0 {
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label = fmt.Sprintf(msg(c, "scroll_to_bottom_button.unread"), unread)
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}
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wrap := ui.Row(c).Absolute().Left(0).Right(0).Bottom(u * 3).Justify(ui.Center).PassThrough()
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var b *ui.Element
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wrap.Children(func() {
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b = ui.ButtonBase(c).MinHeight(theme.MinHitSize).MinWidth(theme.MinHitSize).Padding(0, u*3).Gap(u*2).
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Radius(theme.MinHitSize/2).Label(label).Background(k.Surface).Border(theme.BorderWidth, k.ControlBorder).
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TextColor(k.Text).Shadow(0, 2, 8, 0, ui.RGBA(0, 0, 0, 0.14)).Transition(colorFade)
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b.Opacity(overlayEnter(c, b))
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internal.Ring(b, k.Focus, theme.MinHitSize/2)
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if b.Hovered() {
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b.Background(k.SurfaceHover)
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}
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b.Children(func() {
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ui.Icon(c, icons.Must("arrow-down")).Size(16, 16)
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if unread > 0 {
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ui.Text(c, fmt.Sprint(unread)).FontFeatures("tnum").FontWeight(600).TextColor(k.AccentText).SingleLine()
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}
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})
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})
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return b
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}
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