ZacharyZhang-NY
0e21870b64
An audio player with transport, scrubber and volume; an equalizer and a visualizer; a playlist; a cassette, cartridge and record that turn while they play and hold where they stop; piano keys, a step sequencer and a tracker you can type into; a waveform, a 16:9 video frame, an image compare, a gallery, a filmstrip, a record button and an FM tuner. input exports SlideBase, the undrawn rail its sliders share; the gallery treats exported Bases as building blocks, not components. pixel's micro font gains '#' for notes like C#4. pixel.Pad and the slide rail read input only while their base is enabled, so Inert or a fresh Disabled stops a drag or a key already sent. AGENTS records why a drawn container keeps the DISABLED description: MyGo paints a disabled subtree at half opacity.
68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
package media
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import (
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"fmt"
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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/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 VolumeOptions struct {
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// Bars is how many steps; zero means 8.
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Bars int
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Disabled bool
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}
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type VolumeResult struct {
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Element *ui.Element
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Changed bool
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}
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// Volume sets *level in stepped bars; the speaker mutes.
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func Volume(c *ui.Context, text string, level *int, muted *bool, o VolumeOptions) VolumeResult {
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k := pixel.K(c)
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n := pixel.Or("Volume Bars", o.Bars, 8)
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if n < 2 || *level < 0 || *level > n {
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panic(fmt.Sprintf("media: Volume level %d of %d bars", *level, n))
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}
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var res VolumeResult
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res.Element = ui.Row(c).Gap(k.D(3)).AlignItems(ui.Center).Children(func() {
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sp := icon.Volume
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if *muted {
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sp = icon.Mute
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}
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mute := input.Toggle(c, "", muted, input.ToggleOptions{Icon: sp, Label: k.Msg("mute"), Disabled: o.Disabled}).Changed
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v := float64(*level)
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shell, st, moved := input.SlideBase(c, text, &v, input.RailOptions{Max: float64(n), Step: 1, Disabled: o.Disabled})
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*level = int(v)
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lit, quiet := *level, *muted
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shell.Size(k.D(4*n), k.D(14)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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for i := range n {
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h := 4 + i*10/(n-1)
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s := pixel.Well
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switch {
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case i >= lit:
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case quiet:
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s = pixel.Faint
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case i >= n*3/4:
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s = pixel.Warn
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default:
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s = pixel.Good
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}
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g.Frame(4*i, 14-h, 3, h, pixel.Flat, s)
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}
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g.Finish(st)
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})
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res.Changed = mute || moved
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})
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if res.Changed {
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slog.Debug("8bit: volume", "label", text, "level", *level, "muted", *muted)
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}
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return res
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}
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