flutter_bootstrap_aad 1.0.0-null-safety

A partial implementation of Bootstrap Grid system in Flutter for Responsive Layout.

example/main.dart

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

void main() => runApp(Application());

class Application extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'flutter_bootstrap Demo',
      home: DemoPage(),
    );
  }
}

class DemoPage extends StatefulWidget {
  @override
  _DemoPageState createState() => _DemoPageState();
}

class _DemoPageState extends State<DemoPage> {
  @override
  void initState() {
    super.initState();
    bootstrapGridParameters(
      gutterSize: 30,
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('flutter_bootstap Demo',
            style: TextStyle(color: Colors.black)),
        backgroundColor: Colors.white,
      ),
      body: SingleChildScrollView(
        child: BootstrapContainer(
          fluid: true,
          decoration: BoxDecoration(color: Colors.blue),
          children: [
            BootstrapContainer(
              fluid: false,
              decoration: BoxDecoration(color: Colors.white),
              padding: const EdgeInsets.only(top: 50),
              children: <Widget>[
                BootstrapRow(
                  height: 60,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-6',
                      child: ContentWidget(
                        text: 'col 1 of 2',
                        color: Colors.red,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-6',
                      child: ContentWidget(
                        text: 'col 2 of 2',
                        color: Colors.red,
                      ),
                    ),
                  ],
                ),
                SizedBox(height: 8),
                BootstrapRow(
                  height: 60,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-3',
                      child: ContentWidget(
                        text: 'col 1 of 3',
                        color: Colors.green,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-6',
                      child: ContentWidget(
                        text: 'col 2 of 3 (wider)',
                        color: Colors.red,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-3',
                      child: ContentWidget(
                        text: 'col 3 of 3',
                        color: Colors.green,
                      ),
                    ),
                  ],
                ),
                SizedBox(height: 8),
                Divider(),
                BootstrapRow(
                  height: 120,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-12 col-md-8',
                      child: ContentWidget(
                        text: 'col-12 col-md-8',
                        color: Colors.yellow,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-6 col-md-4',
                      child: ContentWidget(
                        text: 'col-6 col-md-4',
                        color: Colors.green,
                      ),
                    ),
                  ],
                ),
                Divider(),
                BootstrapRow(
                  height: 120,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-9',
                      child: ContentWidget(
                        text: 'col-9',
                        color: Colors.yellow,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-4',
                      child: ContentWidget(
                        text:
                            'col-4\nSince 9+4 = 13 & 13 > 2, this 4-columns gets wrapped onto a new line',
                        color: Colors.green,
                      ),
                    ),
                  ],
                ),
                Divider(),
                BootstrapRow(
                  height: 60,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-md-4',
                      child: ContentWidget(
                        text: 'col-md-8',
                        color: Colors.red,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-md-4',
                      offsets: 'offset-md-4',
                      child: ContentWidget(
                        text: 'col-md-4 offset-md-4',
                        color: Colors.green,
                      ),
                    ),
                  ],
                ),
                BootstrapRow(
                  height: 60,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-md-3',
                      offsets: 'offset-md-3',
                      child: ContentWidget(
                        text: 'col-md-3 offset-md-3',
                        color: Colors.yellow,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-md-3',
                      offsets: 'offset-md-3',
                      child: ContentWidget(
                        text: 'col-md-3 offset-md-3',
                        color: Colors.purple,
                      ),
                    ),
                  ],
                ),
                BootstrapRow(
                  height: 60,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-md-6',
                      offsets: 'offset-md-3',
                      child: ContentWidget(
                        text: 'col-md-6 offset-md-3',
                        color: Colors.yellow,
                      ),
                    ),
                  ],
                ),
                Divider(),
                BootstrapRow(
                  height: 200,
                  children: <BootstrapCol>[
                    BootstrapCol(
                      sizes: 'col-12 col-md-8',
                      orders:
                          'order-2 order-sm-2 order-md-1 order-lg-1 order-xl-1',
                      child: ContentWidget(
                        text: 'col-12 col-md-8 order2(xs,sm)',
                        color: Colors.red,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-12 col-sm-12 col-md-6 col-lg-3 col-xl-3',
                      orders:
                          'order-1 order-sm-1 order-md-2 order-lg-2 order-xl-2',
                      child: ContentWidget(
                        text: 'col 2 order1(xs,sm)',
                        color: Colors.green,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-12 col-sm-12 col-md-6 col-lg-3 col-xl-3',
                      offsets:
                          'offset-0 offset-sm-0 offset-md-2 offset-lg-4 offset-xl-5',
                      orders:
                          'order-3 order-sm-3 order-md-3 order-lg-3 order-xl-3',
                      child: ContentWidget(
                        text: 'col 3',
                        color: Colors.yellow,
                      ),
                    ),
                    BootstrapCol(
                      sizes: 'col-12 col-sm-12 col-md-6 col-lg-3 col-xl-3',
                      orders:
                          'order-4 order-sm-4 order-md-4 order-lg-4 order-xl-4',
                      invisibleForSizes: 'sm xl',
                      child: ContentWidget(
                        text: 'invisible for sm and xl',
                        color: Colors.purple,
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}

class ContentWidget extends StatelessWidget {
  const ContentWidget({
    Key? key,
    this.text,
    this.color,
  }) : super(key: key);

  final String? text;
  final Color? color;

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 50,
      color: color,
      child: Text(text!),
    );
  }
}