title: how to resize text while click on text in flutter?
body: <p>Here is my code</p>
  <pre><code>Container(
            child: Positioned(
              left: offset.dx,
              top: offset.dy,
              child: GestureDetector(
                  onPanUpdate: (details) {
                    setState(() {
                      offset = Offset(offset.dx + details.delta.dx, offset.dy + details.delta.dy);
                      print('offset $offset');
                    });
                  },
                  child: Text(_controller.text, textAlign: TextAlign.center, maxLines: 3,
                      style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20.0, color: colorrr)),),
            ),
          )
  </code></pre>