50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package feedback
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import (
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/icon"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type SaveIndicatorOptions struct{}
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type saveKey struct{}
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// spin is the floppy's width, frame by frame.
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var spin = [4]int{12, 8, 2, 8}
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// SaveIndicator spins a floppy while saving, then shows SAVED ✓.
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func SaveIndicator(c *ui.Context, saving bool, o SaveIndicatorOptions) *ui.Element {
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k := pixel.K(c)
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e := ui.Row(c).Gap(k.D(4)).AlignItems(ui.Center)
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ever := ui.Local(e, saveKey{}, func() bool { return false })
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if saving {
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*ever = true
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}
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if !*ever {
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return e
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}
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word, ink := k.Msg("saved"), pixel.Good
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if saving {
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word, ink = k.Msg("saving")+"…", pixel.Faint
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}
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return e.Role(ui.RoleStatus).Label(word).Children(func() {
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ui.Box(c).Size(k.D(12), k.D(12)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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if !saving {
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g.Sprite(0, 0, icon.Check, 0, pixel.Good, 1)
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return
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}
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// A coin spin: columns squeeze in, crisp.
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w := spin[g.Busy(8)%4]
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x0 := (12 - w) / 2
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for x := range w {
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sx := x * 12 / w
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g.Clip(x0+x, 0, 1, 12, func() { g.Sprite(x0+x-sx, 0, icon.Save, 0, pixel.Info, 1) })
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}
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})
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pixel.Text(c, word, pixel.TextOptions{Slot: ink})
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})
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}
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