47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package input
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import (
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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 StepSliderOptions struct {
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Min, Max float64
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// Step is zero for a tenth of the range.
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Step float64
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Width int
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Disabled bool
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}
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type StepSliderResult = SliderResult
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// StepSlider snaps to steps, with ticks and its value.
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func StepSlider(c *ui.Context, text string, value *float64, o StepSliderOptions) StepSliderResult {
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k := pixel.K(c)
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lo, hi := bounds(o.Min, o.Max)
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step := o.Step
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if step <= 0 {
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step = (hi - lo) / 10
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}
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w := orDef("StepSlider Width", o.Width, 96)
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var res SliderResult
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row := ui.Row(c).Gap(k.D(6)).AlignItems(ui.Center).Children(func() {
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shell, st, changed := slide(c, value, rail{lo: lo, hi: hi, step: step, label: text, disabled: o.Disabled})
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shell.Size(k.D(w), k.D(16)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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x := knobAt(*value, lo, hi, w-6)
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groove(g, x+3, 4)
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for v := lo; v <= hi+step/2; v += step {
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g.Dot(knobAt(v, lo, hi, w-6)+3, 13, pixel.Faint)
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}
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g.Frame(x, 1, 6, 10, pixel.Raised, pixel.Face)
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finish(g, st)
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})
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res = report(shell, changed, "step slider", text, *value)
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pixel.Text(c, fmtValue(*value), pixel.TextOptions{})
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})
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res.Element = row
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return res
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}
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