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.
52 lines
1.5 KiB
Go
52 lines
1.5 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 EqualizerOptions struct {
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// Height is each fader's travel; zero means 64.
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Height int
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Disabled bool
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}
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type EqualizerResult struct {
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Element *ui.Element
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// Band is the band changed this frame, else -1.
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Band int
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}
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// Equalizer sets each band's gain, ±12 dB, on faders.
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func Equalizer(c *ui.Context, text string, bands []string, gains []float64, o EqualizerOptions) EqualizerResult {
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k := pixel.K(c)
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if len(bands) == 0 || len(bands) != len(gains) {
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panic(fmt.Sprintf("media: Equalizer has %d bands and %d gains", len(bands), len(gains)))
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}
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for i, g := range gains {
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if !(g >= -12 && g <= 12) {
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panic(fmt.Sprintf("media: Equalizer band %q gain %v outside ±12", bands[i], g))
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}
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}
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res := EqualizerResult{Band: -1}
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res.Element = ui.Row(c).Gap(k.D(6)).Role(ui.RoleGroup).Label(text).Children(func() {
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for i, b := range bands {
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ui.Column(c).Gap(k.D(2)).AlignItems(ui.Center).Children(func() {
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if input.Fader(c, b, &gains[i], input.FaderOptions{Min: -12, Max: 12, Height: o.Height, Disabled: o.Disabled}).Changed {
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res.Band = i
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slog.Debug("8bit: equalizer", "label", text, "band", b, "gain", gains[i])
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}
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ui.Box(c).Size(k.D(pixel.MicroWidth(b)), k.D(5)).Draw(func(p *ui.Painter, r ui.Rect) {
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k.Canvas(p, r).Micro(0, 0, b, pixel.Faint, 1)
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})
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})
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}
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})
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return res
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}
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