104 lines
2.6 KiB
Go
104 lines
2.6 KiB
Go
package feedback
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import (
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"log/slog"
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"time"
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"github.com/egoist/mygo/ui"
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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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// Toast is a short message in the queue Toasts shows.
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type Toast struct {
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Message string
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// Action labels an optional button.
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Action string
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// For is how long it shows; zero means three seconds.
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For time.Duration
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// id and shown are set as it first shows.
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id uint64
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shown time.Time
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}
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type ToastsOptions struct {
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// Width is each toast's in dots; zero means 200.
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Width int
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Disabled bool
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}
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type ToastsResult struct {
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// Element holds the toasts on screen.
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Element *ui.Element
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// Acted is the toast whose action was clicked, else nil.
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Acted *Toast
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}
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type toastsKey struct{}
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// Toasts shows three timed messages at the bottom.
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func Toasts(c *ui.Context, queue *[]Toast, o ToastsOptions) ToastsResult {
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k := pixel.K(c)
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w := pixel.Or("Toasts Width", o.Width, 200)
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now := k.Now()
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kept := (*queue)[:0]
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for _, t := range *queue {
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if t.For < 0 {
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panic("feedback: Toast For is negative")
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}
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life := t.For
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if life == 0 {
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life = 3 * time.Second
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}
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if t.shown.IsZero() || now.Sub(t.shown) < life {
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kept = append(kept, t)
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}
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}
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*queue = kept
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n := min(3, len(*queue))
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last := ui.Local(c.Root(), toastsKey{}, func() uint64 { return 0 })
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for i := range n {
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if (*queue)[i].id == 0 {
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*last++
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(*queue)[i].id, (*queue)[i].shown = *last, now
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}
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}
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if n > 0 {
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k.Tick(c, 4)
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}
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res := ToastsResult{}
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left := (c.Root().Bounds().W - k.D(w)) / 2
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ui.Overlay(c, func() {
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res.Element = ui.Column(c).Absolute().Left(left).Bottom(k.D(8)).Width(k.D(w)).Gap(k.D(4)).Children(func() {
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for i := range n {
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t := (*queue)[i]
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ui.Row(c).Key(t.id).Padding(k.D(5), k.D(6)).Gap(k.D(6)).AlignItems(ui.Center).Role(ui.RoleStatus).Label(t.Message).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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g.Frame(0, 0, g.W, g.H, pixel.Window, pixel.Face)
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}).Children(func() {
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pixel.Text(c, t.Message, pixel.TextOptions{Wrap: true, MaxLines: 2}).Grow(1)
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if t.Action != "" && input.Button(c, t.Action, input.ButtonOptions{Size: input.Small, Disabled: o.Disabled}).Clicked {
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res.Acted = &t
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}
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})
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}
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})
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})
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if res.Acted != nil {
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*queue = removeToast(*queue, res.Acted.id)
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slog.Debug("8bit: toast action", "message", res.Acted.Message, "action", res.Acted.Action)
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}
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return res
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}
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// removeToast drops the toast with id from q.
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func removeToast(q []Toast, id uint64) []Toast {
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for i := range q {
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if q[i].id == id {
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return append(q[:i], q[i+1:]...)
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}
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}
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return q
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}
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