ZacharyZhang-NY
a2f2796455
Calendars, date and time inputs, pickers, clocks, timers, a sun dial, a season wheel, an agenda and a day schedule. Kit.At rebuilds at a moment (relative times, midnight). Stepper and NumberInput arrows stop under Inert. DateInput parks a popup focus as its own.
89 lines
2.6 KiB
Go
89 lines
2.6 KiB
Go
package datetime
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import (
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"log/slog"
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"strconv"
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"time"
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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/input"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type MonthPickerOptions struct {
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Disabled bool
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}
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type MonthPickerResult struct {
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Element *ui.Element
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Changed bool
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}
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type monthKey struct{}
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// paging is the year or decade shown, and a cell.
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type paging struct {
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at, cur int
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}
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// MonthPicker lays out twelve months; ◀ ▶ turn years.
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func MonthPicker(c *ui.Context, text string, month *time.Time, o MonthPickerOptions) MonthPickerResult {
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k := pixel.K(c)
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col := ui.Column(c).Gap(k.D(2))
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st := ui.Local(col, monthKey{}, func() paging { return paging{at: month.Year(), cur: int(month.Month()) - 1} })
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res := MonthPickerResult{Element: col}
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// Cells fit the widest name in the frame's locale.
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cw := 28
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for m := range 12 {
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cw = max(cw, pixel.Measure(monthName(k, time.Month(m+1)))+6)
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}
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col.Children(func() {
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pager(c, strconv.Itoa(st.at), 4*cw, o.Disabled, func(d int) {
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st.at += d
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slog.Debug("8bit: month picker turned", "label", text, "year", st.at)
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})
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shell, _, ps, picked := pixel.Pad(c, text, 4, 12, cw, cell, &st.cur, o.Disabled)
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if picked >= 0 {
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*month = time.Date(st.at, time.Month(picked+1), 1, 0, 0, 0, 0, month.Location())
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res.Changed = true
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}
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y, m := month.Year(), int(month.Month())-1
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at, cur := st.at, st.cur
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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 12 {
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x, yy := i%4*cw, i/4*cell
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if ps.Focus && i == cur {
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g.Cursor(x, yy, cw, cell)
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}
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if at == y && i == m {
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g.Frame(x+1, yy, cw-2, cell, pixel.Sunken, pixel.Well)
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}
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name := monthName(k, time.Month(i+1))
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g.Text(x+(cw-pixel.Measure(name))/2, yy, name, pixel.Ink, 1)
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}
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g.Finish(ps)
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})
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})
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if res.Changed {
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slog.Debug("8bit: month picker", "label", text, "month", month.Format("2006-01"))
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}
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return res
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}
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// pager heads a grid: ◀ title ▶ call turn.
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func pager(c *ui.Context, title string, w int, disabled bool, turn func(d int)) {
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k := pixel.K(c)
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ui.Row(c).Width(k.D(w)).AlignItems(ui.Center).Children(func() {
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if input.IconButton(c, icon.ChevronLeft, k.Msg("prev"), input.IconButtonOptions{Size: input.Small, Disabled: disabled}).Clicked {
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turn(-1)
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}
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ui.Row(c).Grow(1).Justify(ui.Center).Children(func() { pixel.Text(c, title, pixel.TextOptions{}) })
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if input.IconButton(c, icon.ChevronRight, k.Msg("next"), input.IconButtonOptions{Size: input.Small, Disabled: disabled}).Clicked {
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turn(1)
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}
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})
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}
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