fyne-widgets/examples/waveform/main.go

package main

import (
	"image/color"
	"math/rand"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/canvas"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/theme"
	"git.martyn.berlin/martyn/fyne-widgets/pkg/layouts"
	"git.martyn.berlin/martyn/fyne-widgets/pkg/waveform"
)

func main() {
	a := app.New()
	w := a.NewWindow("Waveform")
	randomAudioData := make([]int32, 1200)
	for i := 0; i < 1200; i++ {
		randomAudioData[i] = rand.Int31()
	}
	as := waveform.NewWaveform(randomAudioData)
	as2 := waveform.NewWaveform(randomAudioData)
	as2.OverrideBackground = true
	as2.OverrideBackgroundColor = color.RGBA{0, 0, 0xff, 0xff} // no effect because of the next line
	as2.TransparentBackground = true
	as2.SetMinSize(fyne.NewSize(1200, 64))
	as3 := waveform.NewWaveform(randomAudioData)
	as3.StretchSamples = true
	as3.SetMinSize(fyne.NewSize(100, 64))
	as3.OverrideForeground = true
	as3.OverrideForegroundColor = color.RGBA{0xff, 0, 0, 0xff}
	as3.TransparentBackground = false

	layout := layouts.NewFloatingControlsLayout()
	layout.FloatingControlsLocation = layouts.FloatingControlsCenter
	image := canvas.NewImageFromResource(theme.FyneLogo())
	image.SetMinSize(fyne.NewSize(200, 64*3))

	contain := container.New(&layout, container.NewBorder(image, as, nil, nil, as3), container.NewBorder(nil, nil, nil, nil, as2))
	w.SetContent(contain)
	w.ShowAndRun()
}