import 'package:flutter/material.dart';

import 'package:flutter_screenutil/flutter_screenutil.dart';

import 'dart:ui';

main()=>runApp(MaterialApp(

  home: MyApp(),

));

class MyApp extends StatefulWidget{

  @override

  State<StatefulWidget> createState() {

    return MyAppState();

  }

}

class MyAppState extends State<MyApp> {

  c(DragDownDetails x){

    var a = 750 * x.globalPosition.dx/350.0;

    var b = 1334 * x.globalPosition.dy/672;

    print('a:$a,  b:$b');

  }

  @override

  Widget build(BuildContext context) {

    print(MediaQuery.of(context).size);

    ScreenUtil.instance = ScreenUtil(width: 750, height: 1334, allowFontScaling: true)..init(context);

    var t = MediaQuery.of(context).padding.top;

    print('t: $t');

    var s = ScreenUtil.statusBarHeight;

    print('s: $s');

    var wx = window.physicalSize;

    print('wx: $wx');

    var wp = window.padding;

    print('wp: $wp');

    var ss = window.devicePixelRatio;

    print('ss: $ss');

    var su = ScreenUtil.pixelRatio;

    print('su: $su');

    return Scaffold(

//      appBar: AppBar(title: Text('abc'),),

      body: Container(

        width: ScreenUtil().setWidth(750.0),

        height: ScreenUtil().setHeight(1334),

        color: Colors.red,

        child: GestureDetector(

          onPanDown: (v){

            c(v);

          },

          child: Text('HELLO', style: TextStyle(color: Colors.white),),

        ),

      ),

    );

  }

}