Flutter: How to move, rotate and zoom the container?

Question

I want to make a container which can be dragged around, zoom and rotate. I am able to achieve a zoom. Below is my code:

//variable declaration
  double _scal         


        

Answer 1

use Matrix Gesture Detector package1 package, here you have the basic sample:

MatrixGestureDetector(
  onMatrixUpdate: (m, tm, sm, rm) {
    setState(() {
      matrix = n;
    });
  },
  child: Transform(
    transform: matrix,
    child: ....
  ),
),

for more sample code refer to example folder that contains 6 demos