Flutter Zoomable Widget

使用

InteractiveViewer

@overrideWidget build(BuildContext context) {  return Center(    child: InteractiveViewer(      panEnabled: false, // Set it to false to prevent panning.       boundaryMargin: EdgeInsets.all(80),      minScale: 0.5,      maxScale: 4,       child: FlutterLogo(size: 200),    ),  );}