79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
package navigation
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import (
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"fmt"
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"strings"
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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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// waving is a flag in two frames of wind.
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var waving = pixel.MustSprite(`
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.#..........
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.#######....
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.########...
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.#########..
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.########...
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.#######....
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.#..........
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.#..........
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.#..........
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.#..........
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.#..........
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.##.#####...
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.#########..
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.#########..
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.##########.
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.##.#####...
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.#..........
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.#..........
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.#..........
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.#..........
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`)
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type StepsOptions struct{}
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// Steps are flags on a path: done, waving, then locked.
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func Steps(c *ui.Context, labels []string, current int, o StepsOptions) *ui.Element {
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k := pixel.K(c)
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if current < 0 || current >= len(labels) {
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panic(fmt.Sprintf("navigation: step %d of %d", current, len(labels)))
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}
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ws, total := make([]int, len(labels)), 0
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for i, l := range labels {
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ws[i] = max(pixel.Measure(l), 12) + 16
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total += ws[i]
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}
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return ui.Box(c).Role(ui.RoleList).Label(strings.Join(labels, ", ")).Description(fmt.Sprintf("%d/%d", current+1, len(labels))).
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Size(k.D(total), k.D(14+pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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x := 0
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for i, l := range labels {
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mid := x + ws[i]/2
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if i > 0 {
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for d := x - ws[i-1]/2 + 10; d < mid-8; d += 3 {
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g.Dot(d, 6, pixel.Faint)
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}
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}
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switch {
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case i < current:
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g.Sprite(mid-6, 0, waving, 0, pixel.Good, 1)
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case i == current:
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g.Sprite(mid-6, 0, waving, g.Step(4)%2, pixel.Accent, 1)
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default:
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g.Sprite(mid-6, 0, icon.Lock, 0, pixel.Faint, 1)
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}
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ink := pixel.Faint
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if i <= current {
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ink = pixel.Ink
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}
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g.Text(mid-pixel.Measure(l)/2, 14, l, ink, 1)
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x += ws[i]
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}
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})
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}
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