title: In Flutter, how can a positioned Widget feel taps outside of its parent Stack area?
body: <p>A <code>Stack</code> contains <code>MyWidget</code> inside of a <code>Positioned</code>.</p>
  
  <pre><code>Stack(
    overflow: Overflow.visible,
    children: [
      Positioned(
      top: 0.0,
      left: 0.0,
      child: MyWidget(),
    )],
  );
  </code></pre>
  
  <p>Since overflow is <code>Overflow.visible</code> and <code>MyWidget</code> is larger than the <code>Stack</code>, it displays outside of the <code>Stack</code>, which is what I want.</p>
  
  <p>However, I can't tap in the area of <code>MyWidget</code> which is outside of the <code>Stack</code> area. It simply ignores the tap there.</p>
  
  <p>How can I make sure <code>MyWidget</code> accepts gestures there?</p>