80 lines
1.4 KiB
Go
80 lines
1.4 KiB
Go
/*
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A slider that goes between a High and Low time
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*/
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package gadgets
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import (
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"fmt"
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"time"
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"go.wit.com/gui"
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"go.wit.com/log"
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)
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type Duration struct {
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p *gui.Node // parent widget
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l *gui.Node // label widget
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s *gui.Node // slider widget
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Label string
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Low time.Duration
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High time.Duration
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Duration time.Duration
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Custom func()
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}
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func (n *Duration) Set(d time.Duration) {
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var timeRange, step, offset time.Duration
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if d > n.High {
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d = n.High
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}
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if d < n.Low {
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d = n.Low
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}
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// set the duration
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n.Duration = d
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// figure out the integer offset for the Slider GUI Widget
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timeRange = n.High - n.Low
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step = timeRange / 1000
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if step == 0 {
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log.Log(INFO, "duration.Set() division by step == 0", n.Low, n.High, timeRange, step)
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n.s.SetValue(0)
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return
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}
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offset = d - n.Low
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i := int(offset / step)
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log.Log(INFO, "duration.Set() =", n.Low, n.High, d, "i =", i)
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// n.s.I = i
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n.s.SetValue(i)
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n.s.Custom()
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}
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func NewDurationSlider(n *gui.Node, label string, low time.Duration, high time.Duration) *Duration {
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d := Duration{
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p: n,
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Label: label,
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High: high,
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Low: low,
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}
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// various timeout settings
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d.l = n.NewLabel(label)
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d.s = n.NewSlider(label, 0, 1000)
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d.s.Custom = func() {
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d.Duration = low + (high-low)*time.Duration(d.s.Int())/1000
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log.Println("d.Duration =", d.Duration)
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s := fmt.Sprintf("%s (%v)", d.Label, d.Duration)
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d.l.SetText(s)
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if d.Custom != nil {
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d.Custom()
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}
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}
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return &d
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}
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