column.dart

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:async';
import 'dart:io';

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

import 'diagram_step.dart';

const String _column = 'column';
const String _columnWithProperties = 'column_properties';

class ColumnDiagram extends StatelessWidget implements DiagramMetadata {
  const ColumnDiagram(this.name, {Key? key}) : super(key: key);

  @override
  final String name;

  @override
  Widget build(BuildContext context) {
    Widget returnWidget;
    switch (name) {
      case _column:
        returnWidget = Column(
          children: const <Widget>[
            Text('Deliver features faster'),
            Text('Craft beautiful UIs'),
            Expanded(
              child: FittedBox(
                fit: BoxFit.contain, // otherwise the logo will be tiny
                child: FlutterLogo(),
              ),
            ),
          ],
        );
        break;
      case _columnWithProperties:
        returnWidget = Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            const Text('We move under cover and we move as one'),
            const Text(
                'Through the night, we have one shot to live another day'),
            const Text('We cannot let a stray gunshot give us away'),
            const Text(
                'We will fight up close, seize the moment and stay in it'),
            const Text(
                'It’s either that or meet the business end of a bayonet'),
            const Text('The code word is ‘Rochambeau,’ dig me?'),
            Text(
              'Rochambeau!',
              style:
                  DefaultTextStyle.of(context).style.apply(fontSizeFactor: 2.0),
            ),
          ],
        );
        break;
      default:
        returnWidget = const Text('Error');
        break;
    }
    return ConstrainedBox(
      key: UniqueKey(),
      constraints: BoxConstraints.tight(const Size(400.0, 250.0)),
      child: Container(
        alignment: FractionalOffset.center,
        padding: const EdgeInsets.all(5.0),
        color: Colors.white,
        child: returnWidget,
      ),
    );
  }
}

class ColumnDiagramStep extends DiagramStep<ColumnDiagram> {
  ColumnDiagramStep(DiagramController controller) : super(controller);

  @override
  final String category = 'widgets';

  @override
  Future<List<ColumnDiagram>> get diagrams async => <ColumnDiagram>[
        const ColumnDiagram(_column),
        const ColumnDiagram(_columnWithProperties),
      ];

  @override
  Future<File> generateDiagram(ColumnDiagram diagram) async {
    controller.builder = (BuildContext context) => diagram;
    return controller.drawDiagramToFile(File('${diagram.name}.png'));
  }
}