onPainted: {
        // You can only do one of those at a time as it will crash on some recursively-locked mutex.
        //if (++numPaints === 1) {
        //    save("/tmp/timemarks1.png")
        //    console.log("painted", timeMarks.numPaints);
        if (++numPaints === 2) {
          save("/tmp/timemarks2.png")
          console.log("painted", timeMarks.numPaints);
        }
    }