Origogi

import 'dart:math';

import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';

typedef PageChangedCallback = void Function(double page);
typedef PageSelectedCallback = void Function(int index);

enum ALIGN { LEFT, CENTER, RIGHT }

Origogi

import 'dart:math';

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

Origogi

import 'package:flutter/material.dart';

main() {
  runApp(
    MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Demo(),
    ),
  );
}