98 lines
2.5 KiB
Go
98 lines
2.5 KiB
Go
package input
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import (
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"log/slog"
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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 NameEntryOptions struct {
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Disabled bool
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}
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type NameEntryResult struct {
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Element *ui.Element
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Changed, Confirmed bool
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}
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type nameKey struct{}
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const (
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nameLen = 3
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// The grid ends with DEL and END after A–Z.
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nameDel, nameEnd = 26, 27
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)
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// NameEntry spells arcade initials from a letter grid; END confirms.
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func NameEntry(c *ui.Context, text string, name *string, o NameEntryOptions) NameEntryResult {
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k := pixel.K(c)
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col := ui.Column(c).Gap(k.D(6)).AlignItems(ui.Center)
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cur := ui.Local(col, nameKey{}, func() int { return 0 })
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res := NameEntryResult{Element: col}
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col.Children(func() {
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ui.Box(c).Size(k.D(nameLen*16-4), k.D(16)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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for i := range nameLen {
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x := i * 16
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if i < len(*name) {
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l := (*name)[i : i+1]
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g.Text(x+(12-pixel.Measure(l))/2, 0, l, pixel.Accent, 1)
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}
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ink := pixel.Edge
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if i == len(*name) {
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ink = pixel.Accent
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}
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g.Rect(x, 14, 12, 2, ink)
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}
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})
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shell, base, st, picked := pad(c, text, 7, nameEnd+1, 14, pixel.LineHeight, cur, o.Disabled)
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switch {
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case picked == nameDel && len(*name) > 0:
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*name, res.Changed = (*name)[:len(*name)-1], true
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case picked == nameEnd && len(*name) > 0:
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res.Confirmed = true
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case picked >= 0 && picked < nameDel && len(*name) < nameLen:
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*name, res.Changed = *name+string(rune('A'+picked)), true
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if len(*name) == nameLen {
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*cur = nameEnd
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}
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}
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base.Description(*name)
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focused := base.Focused()
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shell.Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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for i := range nameEnd + 1 {
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x, y := i%7*14, i/7*pixel.LineHeight
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if focused && i == *cur {
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cursor(g, x, y, 14, pixel.LineHeight)
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}
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switch i {
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case nameDel:
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caption(g, x, y, k.Msg("del"), pixel.Faint)
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case nameEnd:
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caption(g, x, y, k.Msg("end"), pixel.Accent)
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default:
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l := string(rune('A' + i))
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g.Text(x+(14-pixel.Measure(l))/2, y, l, pixel.Ink, 1)
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}
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}
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finish(g, st)
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})
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})
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if res.Confirmed {
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slog.Debug("8bit: name entered", "label", text, "name", *name)
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}
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return res
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}
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// caption centers a cell's word, in micro when possible.
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func caption(g pixel.Canvas, x, y int, s string, ink pixel.Slot) {
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if pixel.MicroOK(s) {
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g.Micro(x+(14-pixel.MicroWidth(s))/2, y+5, s, ink, 1)
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return
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}
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g.Text(x+(14-pixel.Measure(s))/2, y, s, ink, 1)
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}
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