105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
package dialogs
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import (
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/container"
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"fyne.io/fyne/v2/layout"
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"fyne.io/fyne/v2/theme"
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"fyne.io/fyne/v2/widget"
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"github.com/dweymouth/supersonic/ui/layouts"
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myTheme "github.com/dweymouth/supersonic/ui/theme"
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"github.com/dweymouth/supersonic/ui/util"
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)
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type GraphicEqualizer struct {
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widget.BaseWidget
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OnChanged func(band int, gain float64)
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container *fyne.Container
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}
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func NewGraphicEqualizer(bandFreqs []string, bandGains []float64) *GraphicEqualizer {
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g := &GraphicEqualizer{}
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g.ExtendBaseWidget(g)
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g.buildSliders(bandFreqs, bandGains)
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return g
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}
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func (g *GraphicEqualizer) buildSliders(bands []string, bandGains []float64) {
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rng := container.NewVBox(
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newCaptionTextSizeLabel("+12", fyne.TextAlignTrailing),
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layout.NewSpacer(),
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newCaptionTextSizeLabel("0", fyne.TextAlignTrailing),
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layout.NewSpacer(),
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newCaptionTextSizeLabel("-12", fyne.TextAlignTrailing),
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)
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bandSliders := container.New(layouts.NewGridLayoutWithColumnsAndPadding(16, -16))
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bandSliders.Add(container.NewBorder(nil, widget.NewLabel(""), nil, nil, rng))
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for i, band := range bands {
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s := newEQSlider()
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if i < len(bandGains) {
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s.SetValue(bandGains[i])
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}
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s.OnChanged = func(i int) func(float64) {
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return func(f float64) {
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if g.OnChanged != nil {
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g.OnChanged(i, f)
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}
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}
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}(i)
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l := newCaptionTextSizeLabel(band, fyne.TextAlignCenter)
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c := container.NewBorder(nil, l, nil, nil, s)
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bandSliders.Add(c)
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}
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g.container = container.NewMax(
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container.NewBorder(nil, widget.NewLabel(""), nil, nil,
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container.NewBorder(nil, nil, util.NewHSpace(35), util.NewHSpace(5),
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container.NewVBox(
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layout.NewSpacer(),
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myTheme.NewThemedRectangle(theme.ColorNameInputBackground),
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layout.NewSpacer(),
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),
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),
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),
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bandSliders,
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)
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}
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func newCaptionTextSizeLabel(text string, alignment fyne.TextAlign) *widget.RichText {
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l := widget.NewRichTextWithText(text)
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ts := l.Segments[0].(*widget.TextSegment)
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ts.Style.SizeName = theme.SizeNameCaptionText
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ts.Style.Alignment = alignment
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return l
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}
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func (g *GraphicEqualizer) CreateRenderer() fyne.WidgetRenderer {
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return widget.NewSimpleRenderer(g.container)
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}
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type eqSlider struct {
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widget.Slider
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tappedAt int64
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}
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func newEQSlider() *eqSlider {
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s := &eqSlider{
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Slider: widget.Slider{
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Orientation: widget.Vertical,
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Min: -12,
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Max: 12,
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Step: 0.1,
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},
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}
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s.ExtendBaseWidget(s)
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return s
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}
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// We implement our own double tapping so that the Tapped behavior
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// can be triggered instantly.
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func (s *eqSlider) DoubleTapped(e *fyne.PointEvent) {
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s.SetValue(0)
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}
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