title: How to resize (height and width) of an IconButton in Flutter
body: <p>How to resize (height and width) of an IconButton in Flutter? Seems like it takes a default width and height. There is not height or width property.</p>
  
  <pre><code>new IconButton(
      padding: new EdgeInsets.all(0.0),
      color: themeData.primaryColor,
      icon: new Icon(Icons.clear, size: 18.0),
      onPressed: onDelete,
  )
  </code></pre>