music_xml 1.3.0

A Dart package project to parse MusicXML. Inspired from Google's magenta.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:music_xml/music_xml.dart';
import 'package:xml/xml.dart';

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

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  const MyHomePage([Key? key]) : super(key: key);

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: const Text('Flutter Demo Home Page'),
      ),
      body: const Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          MusicItem(
            xmlFile: 'musicXML.xml',
          ),
          MusicItem(
            xmlFile: 'test.xml',
          ),
        ],
      )
    );
  }
}

class MusicItem extends StatelessWidget {

  final String xmlFile;

  const MusicItem({
    required this.xmlFile,
    Key? key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<MusicXmlDocument>(
      future: rootBundle
          .loadString('assets/$xmlFile')
          .then((value) => MusicXmlDocument.parse(value)),
      builder: (context, snapshot) {
        if (snapshot.hasData) {
          final document = snapshot.data!;
          final score = document.score;
          final scorePartwise = score.getElement('score-partwise');
          final movementTitle = scorePartwise?.getElement('movement-title');
          return Padding(
            padding: const EdgeInsets.all(16.0),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text('movement-title: ${movementTitle?.innerText}'),
                const SizedBox(height: 16),
                Text('totalTimeSecs: ${document.totalTimeSecs}'),
              ],
            ),
          );
        }
        return const Center(child: CircularProgressIndicator());
      },
    );
  }
}