L4 TP GRID ! - main.dart

l4_tp_grid.dart

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

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

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

  final String appTtile = 'L4 TP1 - ESIH';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: appTtile,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: MyHomePage(title: appTtile),
    );
  }
}

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

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {

  final nbBox = 120;

  final boxPerLigne = 3;
  final spacing = 10.0;

  Color _getRandomColor() {
    Random random = Random();
    return Color.fromRGBO(
      random.nextInt(256),
      random.nextInt(256),
      random.nextInt(256),
      1.0,
    );
  }
  
  @override
  Widget build(BuildContext context) {

    final removewidth = spacing * (boxPerLigne + 1);
    final boxWidth = (MediaQuery.of(context).size.width - removewidth) / boxPerLigne;

    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Padding(
        padding: EdgeInsets.all(spacing),
        child: SingleChildScrollView(
          child: Wrap(
            spacing: spacing,
            runSpacing: spacing,
            direction: Axis.horizontal,
            children: <Widget>[
              for (var i = 0; i < nbBox; i++)
                DecoratedBox(
                  decoration: BoxDecoration(
                    color: _getRandomColor()
                  ),
                  child: SizedBox.square(dimension: boxWidth,)
                )
            ],
          ),
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () => setState(() {}),
        tooltip: 'Recharger',
        child: const Icon(Icons.refresh),
      )
    );
  }
}