flutter_date_time_picker/example/lib/main.dart

// SPDX-FileCopyrightText: 2022 Iconica
//
// SPDX-License-Identifier: BSD-3-Clause

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

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Demo drag down date time picker',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const DatePickerDemo(),
    );
  }
}

class DatePickerDemo extends StatelessWidget {
  const DatePickerDemo({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    const dateTimePickerTheme = DateTimePickerTheme(
      dateBoxShape: DateBoxShape.roundedRectangle,
      backgroundColor: Colors.white,
      markedIndicatorColor: Colors.red,
      baseTheme: DateBoxBaseTheme(
        Colors.white,
        TextStyle(color: Colors.black),
      ),
      selectedTheme: DateBoxSelectedTheme(
        Color(0x4BF44336),
        TextStyle(
          color: Colors.red,
        ),
      ),
      highlightTheme: DateBoxHighlightTheme(
        Colors.red,
        TextStyle(
          color: Colors.white,
        ),
      ),
      barTheme: DateTimePickerBarTheme(
        barColor: Colors.black,
        barOpacity: 1,
      ),
      paginationSize: 50,
    );

    return Scaffold(
      appBar: AppBar(
        automaticallyImplyLeading: true,
        title: const Text('Demo'),
      ),
      body: Stack(
        children: [
          Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: [
                OverlayDateTimePicker(
                  theme: dateTimePickerTheme,
                  alignment: Alignment.bottomCenter,
                  child: const Text("Select Day"),
                  onTapDay: (date) {},
                ),
                OverlayDateTimePicker(
                  theme: dateTimePickerTheme,
                  alignment: Alignment.center,
                  buttonBuilder: (key, onPressed) => TextButton(
                    key: key,
                    onPressed: onPressed,
                    child: const Text("Select Day"),
                  ),
                  dateTimeConstraint: DateTimeConstraint(
                    min: DateConstraint(date: DateTime.now()),
                  ),
                ),
                OverlayDateTimePicker(
                  theme: dateTimePickerTheme,
                  alignment: Alignment.topCenter,
                  buttonBuilder: (key, onPressed) => IconButton(
                    key: key,
                    onPressed: onPressed,
                    icon: const Icon(
                      Icons.schedule,
                    ),
                  ),
                  dateTimeConstraint: DateTimeConstraint(
                    min: DateConstraint(date: DateTime.now()),
                    max: DateConstraint(
                      date: DateTime(
                        DateTime.now().year,
                        DateTime.now().month + 4,
                        DateTime.now().day,
                      ),
                    ),
                  ),
                  onNextPageButtonBuilder: (onPressed) {
                    return IconButton(
                        onPressed: onPressed, icon: const Icon(Icons.add));
                  },
                  onPreviousPageButtonBuilder: (onPressed) {
                    return IconButton(
                        onPressed: onPressed, icon: const Icon(Icons.minimize));
                  },
                )
              ],
            ),
          ),
          DragDownDateTimePicker(
            dateTimePickerTheme: const DateTimePickerTheme(
              backgroundColor: Colors.white,
              markedIndicatorColor: Colors.red,
              baseTheme: DateBoxBaseTheme(
                Colors.white,
                TextStyle(color: Colors.black),
              ),
              selectedTheme: DateBoxSelectedTheme(
                Color(0x4BF44336),
                TextStyle(
                  color: Colors.red,
                ),
              ),
              highlightTheme: DateBoxHighlightTheme(
                Colors.red,
                TextStyle(
                  color: Colors.white,
                ),
              ),
              barTheme: DateTimePickerBarTheme(
                barColor: Colors.black,
                barOpacity: 1,
              ),
            ),
            markedDates: [DateTime(2022, 9, 6)],
          )
        ],
      ),
    );
  }
}