random_color_scheme 0.1.4

Generate light and dark color schemes to help you theme an app.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:random_color_scheme/random_color_scheme.dart';
import 'package:url_launcher/url_launcher_string.dart';

import 'preview/chat_preview.dart';
import 'preview/social_preview.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      title: 'Random Color Scheme',
      home: RefreshableHome(),
    );
  }
}

class RefreshableHome extends StatefulWidget {
  const RefreshableHome({Key? key}) : super(key: key);

  @override
  State<RefreshableHome> createState() => _RefreshableHomeState();
}

class _RefreshableHomeState extends State<RefreshableHome> {
  int refreshSeed = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ThemeList(refreshSeed),
      appBar: AppBar(
        backgroundColor: Colors.white,
        title: const Text(
          "Random Color Scheme",
          style: TextStyle(color: Colors.black),
        ),
        actions: [
          IconButton(
            icon: const Icon(
              Icons.code_rounded,
              color: Colors.black,
            ),
            tooltip: "Source",
            onPressed: () async {
              await launchUrlString(
                  "https://github.com/bernaferrari/RandomColorScheme");
            },
          )
        ],
        elevation: 0,
      ),
      floatingActionButton: FloatingActionButton.extended(
        onPressed: () {
          setState(() {
            refreshSeed += 25;
          });
        },
        label: const Text("Refresh"),
        icon: const Icon(Icons.refresh),
        backgroundColor: Colors.red[500],
      ),
    );
  }
}

class ThemeList extends StatelessWidget {
  final int refresh;

  const ThemeList(this.refresh, {Key? key}) : super(key: key);

  Theme customTheme({Widget? child, required int i, required bool isDark}) {
    return Theme(
      data: ThemeData(
        colorScheme: randomColorScheme(seed: i + refresh, isDark: isDark),
        outlinedButtonTheme: OutlinedButtonThemeData(
          style: OutlinedButton.styleFrom(
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(8),
            ),
          ),
        ),
        cardTheme: CardTheme(
          elevation: 0,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(8),
          ),
        ),
      ),
      child: const ThemeItem(),
    );
  }

  @override
  Widget build(BuildContext context) {
    final condition = MediaQuery.of(context).size.width > 950;

    return Padding(
      padding: const EdgeInsets.all(4),
      child: ListView(
        children: [
          Card(
            elevation: 0,
            color: const Color(0xffECFDF5),
            shape: RoundedRectangleBorder(
              side: const BorderSide(width: 2, color: Color(0xffA7F3D0)),
              borderRadius: BorderRadius.circular(8),
            ),
            child: Padding(
              padding: const EdgeInsets.all(16),
              child: Text(
                """
This is the sample for a library.
The idea is for you to plug randomColorScheme() into your apps and discover new material themes.""",
                style: Theme.of(context).textTheme.titleSmall,
                textAlign: TextAlign.center,
              ),
            ),
          ),
          for (int i = 0; i < 25; i++)
            Flex(
              direction: condition ? Axis.horizontal : Axis.vertical,
              children: [
                Flexible(
                  flex: condition ? 1 : 0,
                  child: customTheme(
                    child: const ThemeItem(),
                    i: i,
                    isDark: true,
                  ),
                ),
                Flexible(
                  flex: condition ? 1 : 0,
                  child: customTheme(
                    child: const ThemeItem(),
                    i: i,
                    isDark: false,
                  ),
                ),
              ],
            ),
        ],
      ),
    );
  }
}

class ThemeItem extends StatelessWidget {
  const ThemeItem({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Card(
      color: Theme.of(context).colorScheme.background,
      elevation: 0,
      child: Row(
        children: const [
          Expanded(child: SocialPreview()),
          Expanded(child: ChatPreview()),
        ],
      ),
    );
  }
}