import 'package:flutter/material.dart';

Route<T> slideRoute<T>(Widget page) => PageRouteBuilder<T>(
  pageBuilder: (_, a, __) => page,
  transitionsBuilder: (_, a, __, child) => SlideTransition(
    position: Tween<Offset>(begin: const Offset(1, 0), end: Offset.zero)
        .animate(CurvedAnimation(parent: a, curve: Curves.easeOut)),
    child: child,
  ),
  transitionDuration: const Duration(milliseconds: 320),
);

Route<T> fadeRoute<T>(Widget page) => PageRouteBuilder<T>(
  pageBuilder: (_, a, __) => page,
  transitionsBuilder: (_, a, __, child) => FadeTransition(opacity: a, child: child),
  transitionDuration: const Duration(milliseconds: 400),
);

Route<T> scaleRoute<T>(Widget page) => PageRouteBuilder<T>(
  pageBuilder: (_, a, __) => page,
  transitionsBuilder: (_, a, __, child) => ScaleTransition(
    scale: Tween<double>(begin: 0.88, end: 1.0)
        .animate(CurvedAnimation(parent: a, curve: Curves.easeOut)),
    child: FadeTransition(opacity: a, child: child),
  ),
  transitionDuration: const Duration(milliseconds: 350),
);