hexagon 0.2.0

Library about hexagon shape. You can create pointy or flat hexagons in any color you like.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:hexagon/hexagon.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: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: const MyHomePage(title: 'Example'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  MyHomePageState createState() => MyHomePageState();
}

class MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
  int depth = 1;
  List<int> depths = [0, 1, 2, 3, 4];
  HexagonType type = HexagonType.FLAT;
  bool hasControls = true;
  bool showControls = true;

  late TabController tabController;

  @override
  void initState() {
    super.initState();
    tabController = TabController(initialIndex: 0, length: 4, vsync: this);
    tabController.addListener(_onTabChange);
  }

  void _onTabChange() {
    if (tabController.index == 0) {
      setState(() {
        hasControls = true;
      });
    } else {
      setState(() {
        hasControls = false;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    var size = MediaQuery.of(context).size;

    return DefaultTabController(
      length: 4,
      initialIndex: 0,
      child: Scaffold(
        appBar: AppBar(
          bottom: TabBar(
            controller: tabController,
            tabs: const [
              Tab(text: 'Grid'),
              Tab(text: 'V-Offset'),
              Tab(text: 'H-Offset'),
              Tab(text: 'Other'),
            ],
          ),
          title: Text(widget.title),
          actions: hasControls
              ? [
                  Row(children: [
                    const Text('Controls'),
                    Switch(
                      value: showControls,
                      activeColor: Colors.lightBlueAccent,
                      onChanged: (value) => setState(() {
                        showControls = value;
                      }),
                    ),
                  ])
                ]
              : null,
        ),
        body: TabBarView(
          controller: tabController,
          physics: const NeverScrollableScrollPhysics(),
          children: [
            Stack(
              children: [
                Positioned.fill(child: _buildGrid(context, type)),
                Align(
                  alignment: Alignment.topRight,
                  child: Visibility(
                    visible: showControls,
                    child: Theme(
                      data: ThemeData(colorScheme: const ColorScheme.dark()),
                      child: Card(
                        margin: const EdgeInsets.all(8.0),
                        child: Padding(
                          padding: const EdgeInsets.symmetric(
                              vertical: 2.0, horizontal: 16.0),
                          child: Column(
                            mainAxisSize: MainAxisSize.min,
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              DropdownButton<HexagonType>(
                                onChanged: (value) => setState(() {
                                  if (value != null) {
                                    type = value;
                                  }
                                }),
                                value: type,
                                items: const [
                                  DropdownMenuItem<HexagonType>(
                                    value: HexagonType.FLAT,
                                    child: Text('Flat'),
                                  ),
                                  DropdownMenuItem<HexagonType>(
                                    value: HexagonType.POINTY,
                                    child: Text('Pointy'),
                                  )
                                ],
                                selectedItemBuilder: (context) =>
                                [
                                  const Center(child: Text('Flat')),
                                  const Center(child: Text('Pointy')),
                                ],
                              ),
                              DropdownButton<int>(
                                onChanged: (value) => setState(() {
                                  if (value != null) {
                                    depth = value;
                                  }
                                }),
                                value: depth,
                                items: depths
                                    .map((e) => DropdownMenuItem<int>(
                                          value: e,
                                          child: Text('Depth: $e'),
                                        ))
                                    .toList(),
                                selectedItemBuilder: (context) {
                                  return depths
                                      .map((e) =>
                                          Center(child: Text('Depth: $e')))
                                      .toList();
                                },
                              ),
                            ],
                          ),
                        ),
                      ),
                    ),
                  ),
                ),
              ],
            ),
            _buildVerticalGrid(),
            _buildHorizontalGrid(),
            _buildMore(size),
          ],
        ),
      ),
    );
  }

  Widget _buildGrid(BuildContext context, HexagonType type) {
    return InteractiveViewer(
      minScale: 0.2,
      maxScale: 4.0,
      child: HexagonGrid(
        hexType: type,
        color: Colors.pink,
        depth: depth,
        buildTile: (coordinates) => HexagonWidgetBuilder(
          padding: 2.0,
          cornerRadius: 8.0,
          child: Text('${coordinates.q}, ${coordinates.r}'),
          // Text('${coordinates.x}, ${coordinates.y}, ${coordinates.z}\n  ${coordinates.q}, ${coordinates.r}'),
        ),
      ),
    );
  }

  Widget _buildHorizontalGrid() {
    return SingleChildScrollView(
      scrollDirection: Axis.horizontal,
      child: HexagonOffsetGrid.oddPointy(
        color: Colors.black54,
        padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 32.0),
        columns: 9,
        rows: 4,
        buildTile: (col, row) => row.isOdd && col.isOdd
            ? null
            : HexagonWidgetBuilder(
                elevation: col.toDouble(),
                padding: 4.0,
                cornerRadius: row.isOdd ? 24.0 : null,
                color: col == 1 || row == 1 ? Colors.lightBlue.shade200 : null,
                child: Text('$col, $row'),
              ),
      ),
    );
  }

  Widget _buildVerticalGrid() {
    return SingleChildScrollView(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          HexagonOffsetGrid.evenFlat(
            color: Colors.yellow.shade100,
            padding: const EdgeInsets.all(8.0),
            columns: 5,
            rows: 10,
            buildTile: (col, row) => HexagonWidgetBuilder(
              color: row.isEven ? Colors.yellow : Colors.orangeAccent,
              elevation: 2.0,
              padding: 2.0,
            ),
            buildChild: (col, row) => Text('$col, $row'),
          ),
        ],
      ),
    );
  }

  Widget _buildMore(Size size) {
    var padding = 8.0;
    var w = (size.width - 4 * padding) / 2;
    var h = 150.0;
    return SingleChildScrollView(
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            mainAxisSize: MainAxisSize.min,
            children: [
              Padding(
                padding: EdgeInsets.all(padding),
                child: HexagonWidget.flat(
                  width: w,
                  child: AspectRatio(
                    aspectRatio: HexagonType.FLAT.ratio,
                    child: Image.asset(
                      'assets/bee.jpg',
                      fit: BoxFit.fitHeight,
                    ),
                  ),
                ),
              ),
              Padding(
                padding: EdgeInsets.all(padding),
                child: HexagonWidget.pointy(
                  width: w,
                  child: AspectRatio(
                    aspectRatio: HexagonType.POINTY.ratio,
                    child: Image.asset(
                      'assets/tram.jpg',
                      fit: BoxFit.fitWidth,
                    ),
                  ),
                ),
              ),
            ],
          ),
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: HexagonWidget.flat(
                  height: h,
                  color: Colors.orangeAccent,
                  child: Text('flat\nheight: ${h.toStringAsFixed(2)}'),
                ),
              ),
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: HexagonWidget.pointy(
                  height: h,
                  color: Colors.red,
                  child: Text('pointy\nheight: ${h.toStringAsFixed(2)}'),
                ),
              ),
            ],
          ),
          Padding(
            padding: EdgeInsets.all(padding),
            child: HexagonWidget.flat(
              width: w,
              color: Colors.limeAccent,
              elevation: 0,
              child: Text('flat\nwidth: ${w.toStringAsFixed(2)}\nelevation: 0'),
            ),
          ),
          Padding(
            padding: EdgeInsets.all(padding),
            child: HexagonWidget.pointy(
              width: w,
              color: Colors.lightBlue,
              child: Text('pointy\nwidth: ${w.toStringAsFixed(2)}'),
            ),
          ),
        ],
      ),
    );
  }
}

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