Add CLI flag to start app minimized

Author: E1int

backend/app.go

@@ -537,6 +537,8 @@ func (a *App) checkFlagsAndSendIPCMsg(cli *ipc.Client) error {
 		return cli.SeekBackOrPrevious()
 	case *FlagNext:
 		return cli.SeekNext()
+	case *FlagShow:
+		return cli.Show()
 	case VolumeCLIArg >= 0:
 		return cli.SetVolume(VolumeCLIArg)
 	case VolumePctCLIArg != 0:

backend/cmdlineoptions.go

@@ -12,13 +12,15 @@ var (
 	SeekByCLIArg    float64 = 0
 	VolumePctCLIArg float64 = 0
 
-	FlagPlay      = flag.Bool("play", false, "unpause or begin playback")
-	FlagPause     = flag.Bool("pause", false, "pause playback")
-	FlagPlayPause = flag.Bool("play-pause", false, "toggle play/pause state")
-	FlagPrevious  = flag.Bool("previous", false, "seek to previous track or beginning of current")
-	FlagNext      = flag.Bool("next", false, "seek to next track")
-	FlagVersion   = flag.Bool("version", false, "print app version and exit")
-	FlagHelp      = flag.Bool("help", false, "print command line options and exit")
+	FlagPlay           = flag.Bool("play", false, "unpause or begin playback")
+	FlagPause          = flag.Bool("pause", false, "pause playback")
+	FlagPlayPause      = flag.Bool("play-pause", false, "toggle play/pause state")
+	FlagPrevious       = flag.Bool("previous", false, "seek to previous track or beginning of current")
+	FlagNext           = flag.Bool("next", false, "seek to next track")
+	FlagStartMinimized = flag.Bool("start-minimized", false, "start app minimized")
+	FlagShow           = flag.Bool("show", false, "show minimized app")
+	FlagVersion        = flag.Bool("version", false, "print app version and exit")
+	FlagHelp           = flag.Bool("help", false, "print command line options and exit")
 )
 
 func init() {
@@ -50,8 +52,11 @@ func init() {
 
 func HaveCommandLineOptions() bool {
 	visitedAny := false
-	flag.Visit(func(*flag.Flag) {
-		visitedAny = true
+	flag.Visit(func(f *flag.Flag) {
+		// We skip `start-minimized` because it should't send an IPC message.
+		if f.Name != "start-minimized" {
+			visitedAny = true
+		}
 	})
 	return visitedAny
 }

main.go

@@ -103,7 +103,11 @@ func main() {
 	})
 	fyneApp.Lifecycle().SetOnEnteredForeground(windowStartupTasks)
 
-	mainWindow.ShowAndRun()
+	if *backend.FlagStartMinimized {
+		fyneApp.Run()
+	} else {
+		mainWindow.ShowAndRun()
+	}
 
 	log.Println("Running shutdown tasks...")
 	myApp.Shutdown()