39 lines
1.0 KiB
Go
39 lines
1.0 KiB
Go
package feedback
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import (
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"strings"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type LoadingScreenOptions struct {
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// Tips take turns, four seconds each.
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Tips []string
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// Width is in dots; zero means 240.
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Width int
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}
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// LoadingScreen shows NOW LOADING, stepping dots and a tip.
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func LoadingScreen(c *ui.Context, o LoadingScreenOptions) *ui.Element {
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k := pixel.K(c)
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w := pixel.Or("LoadingScreen Width", o.Width, 240)
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title := k.Msg("loading")
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return ui.Box(c).Role(ui.RoleStatus).Label(title).Size(k.D(w), k.D(2*pixel.LineHeight+8+2*pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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n := g.Busy(4)
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line := title + strings.Repeat(".", n%4)
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x := (w - pixel.Measure(title+"...")*2) / 2
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g.Text(x+2, 2, line, pixel.Shade, 2)
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g.Text(x, 0, line, pixel.Accent, 2)
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if len(o.Tips) == 0 {
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return
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}
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tip := o.Tips[n/16%len(o.Tips)]
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for i, l := range pixel.Wrap(tip, w, 2) {
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g.Text((w-pixel.Measure(l))/2, 2*pixel.LineHeight+8+i*pixel.LineHeight, l, pixel.Faint, 1)
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}
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})
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}
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