package main

import (
	"strconv"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/widget"
	"git.martyn.berlin/martyn/fyne-widgets/pkg/gocvwebcam"
	"git.martyn.berlin/martyn/fyne-widgets/pkg/layouts"
)

var gocvWebcamID int
var gocvWebcamLabel *widget.Label
var gocvWebcamWidget *gocvwebcam.GocvWebcam

func switchGocvWebcam(id int) {
	gocvWebcamLabel.Text = "GocvWebcam: " + strconv.Itoa(id)
	gocvWebcamLabel.Refresh()
	gocvWebcamWidget.GocvWebcamID = int64(id)
	gocvWebcamWidget.Refresh()
}

func incWebCamID() {
	gocvWebcamID = gocvWebcamID + 1
	switchGocvWebcam(gocvWebcamID)
}

func decWebCamID() {
	gocvWebcamID = gocvWebcamID - 1
	switchGocvWebcam(gocvWebcamID)
}

func main() {
	a := app.New()
	w := a.NewWindow("GocvWebcam")

	gocvWebcamWidget = gocvwebcam.NewGocvWebcam()
	layout := layouts.NewFloatingControlsLayout()
	layout.FloatingControlsLocation = layouts.FloatingControlsCenter
	gocvWebcamID = 0
	gocvWebcamWidget.UpdateFPS = 50

	gocvWebcamLabel = widget.NewLabel("Webcam: 0")
	buttons := container.NewHBox(gocvWebcamLabel, widget.NewButton("-", decWebCamID), widget.NewButton("+", incWebCamID))

	w.SetContent(container.New(&layout, gocvWebcamWidget, buttons))
	w.Resize(fyne.NewSize(640, 480))
	w.ShowAndRun()
}