74 lines
3.0 KiB
Go
74 lines
3.0 KiB
Go
package finance
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import (
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"fmt"
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"math"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/core"
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"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/data"
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"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/icons"
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"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/theme"
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)
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// MarginIndicatorOptions configure a MarginIndicator. Zero lines mean 80% and 100%.
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type MarginIndicatorOptions struct {
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// Warning and Liquidation are margin ratios, Warning below Liquidation.
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Warning, Liquidation float64
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// Label names the indicator; empty uses the built-in "Margin ratio".
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Label string
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}
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// MarginIndicator shows maintenance over equity against its two lines.
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func MarginIndicator(c *ui.Context, ratio float64, opts MarginIndicatorOptions) *ui.Element {
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warn, liq := opts.Warning, opts.Liquidation
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if warn == 0 && liq == 0 {
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warn, liq = 0.8, 1
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}
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if !(warn > 0 && warn < liq) || ratio < 0 || math.IsNaN(ratio) {
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panic(fmt.Sprintf("mujica: MarginIndicator ratio %v, lines %v and %v: need 0 < Warning < Liquidation", ratio, warn, liq))
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}
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k := core.Tokens(c)
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u := core.Density(c).Unit()
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label := opts.Label
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if label == "" {
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label = core.Msg(c, "margin_indicator.label")
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}
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status, col, icon := core.Msg(c, "margin_indicator.safe"), k.Success, "circle-check"
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switch {
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case ratio >= liq:
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status, col, icon = core.Msg(c, "margin_indicator.liquidation"), k.Danger, "circle-x"
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case ratio >= warn:
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status, col, icon = core.Msg(c, "margin_indicator.warning"), k.Warning, "triangle-alert"
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}
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pct := func(v float64) string { return data.StatisticFormat(v*100, 1) + "%" }
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top := math.Max(liq*1.25, ratio)
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e := ui.Column(c).Gap(u * 2).MinWidth(220).Role(ui.RoleMeter).Label(label).
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Description(fmt.Sprintf(core.Msg(c, "margin_indicator.spoken"), pct(ratio), status, pct(warn), pct(liq)))
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e.Children(func() {
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ui.Row(c).Gap(u * 2).AlignItems(ui.Center).Children(func() {
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ui.Text(c, pct(ratio)).FontSize(core.FontSize(c, theme.H3Size)).FontFeatures("tnum").FontWeight(600).SingleLine()
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ui.Row(c).Gap(u / 2).AlignItems(ui.Center).TextColor(col).Children(func() {
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ui.Icon(c, icons.Must(icon)).Size(14, 14)
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ui.Text(c, status).FontSize(core.FontSize(c, theme.CaptionSize)).FontWeight(600).SingleLine()
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})
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})
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ui.Box(c).Height(14).FillWidth().Draw(func(p *ui.Painter, r ui.Rect) {
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bar := ui.Rect{X: r.X, Y: r.Y + 3, W: r.W, H: 8}
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p.Fill(bar, k.SurfaceHover, theme.ControlRadius)
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p.Fill(ui.Rect{X: bar.X, Y: bar.Y, W: bar.W * float32(ratio/top), H: bar.H}, col, theme.ControlRadius)
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// The liquidation line is drawn heavier than the warning line.
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for i, line := range []float64{warn, liq} {
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x := bar.X + bar.W*float32(line/top)
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p.Line(x, r.Y, x, r.Y+r.H, 1.5+float32(i)*1.5, k.Text)
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}
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})
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ui.Row(c).Gap(u * 4).Wrap().Children(func() {
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ui.Text(c, core.Msg(c, "margin_indicator.warning_line")+" "+pct(warn)).FontSize(core.FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted)
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ui.Text(c, core.Msg(c, "margin_indicator.liquidation_line")+" "+pct(liq)).FontSize(core.FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted)
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})
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})
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return e
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}
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