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.
63 lines
1.7 KiB
Go
63 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/input"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type TunerOptions struct {
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Disabled bool
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}
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type TunerResult struct {
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Element *ui.Element
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Changed bool
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}
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// Tuner sets *mhz on the FM dial by tenths.
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func Tuner(c *ui.Context, text string, mhz *float64, o TunerOptions) TunerResult {
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k := pixel.K(c)
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const lo, hi = 87.5, 108.0
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if !(*mhz >= lo && *mhz <= hi) {
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panic(fmt.Sprintf("media: Tuner %v MHz outside FM", *mhz))
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}
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var res TunerResult
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// The glass holds the scale; the scale is the slider.
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res.Element = ui.Box(c).Size(k.D(176), k.D(32)).PaddingX(k.D(8)).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, 176, 32, pixel.Sunken, pixel.Well)
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g.Dither(2, 2, 172, 28, pixel.Well, pixel.Warn, 3)
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g.HLine(8, 24, 162, pixel.Ink)
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g.Micro(150, 26, "MHZ", pixel.Faint, 1)
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}).Children(func() {
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shell, st, changed := input.SlideBase(c, text, mhz, input.RailOptions{Min: lo, Max: hi, Step: 0.1, Disabled: o.Disabled})
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res.Changed = changed
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at := *mhz
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shell.Size(k.D(160), k.D(32)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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// The dot under the pointer is the frequency it sets.
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x := func(f float64) int { return int((f - lo) / (hi - lo) * 160) }
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for f := 88; f <= 108; f++ {
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h := 3
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if f%4 == 0 {
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h = 6
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s := fmt.Sprint(f)
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g.Micro(x(float64(f))-pixel.MicroWidth(s)/2, 4, s, pixel.Ink, 1)
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}
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g.VLine(x(float64(f)), 24-h, h, pixel.Ink)
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}
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g.Rect(x(at), 3, 2, 26, pixel.Bad)
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g.Finish(st)
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})
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})
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if res.Changed {
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slog.Debug("8bit: tuner", "label", text, "mhz", *mhz)
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}
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return res
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}
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