├── .travis.yml
├── .gitignore
├── package.json
├── README.md
├── demo
├── index.html
├── debug.html
└── document_tests.js
├── Gruntfile.js
├── src
├── document.js
├── measure.js
├── musicxml.js
└── documentformatter.js
└── support
└── jquery.min.js
/.travis.yml:
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1 | language: node_js
2 | node_js:
3 | - "0.11"
4 | install: npm install
5 | before_script: npm start
6 |
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/.gitignore:
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1 | .DS_Store
2 | node_modules
3 | docs/*.html
4 | docs/public
5 | docs/docco.css
6 | !docs/index.html
7 | npm-debug.log
8 | vexflow
9 |
10 | #eclipse
11 | .project
12 | .settings/
13 |
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/package.json:
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1 | {
2 | "name": "vexflow-musicxml",
3 | "version": "0.0.1",
4 | "description": "MusicXML plugin for VexFlow",
5 | "main": "build.js",
6 | "directories": {
7 | "doc": "docs",
8 | "test": "tests"
9 | },
10 | "scripts": {
11 | "test": "echo \"Error: no test specified\" && exit 1"
12 | },
13 | "repository": {
14 | "type": "git",
15 | "url": "https://github.com/mechanicalscribe/vexflow-musicxml.git"
16 | },
17 | "keywords": [
18 | "vexflow",
19 | "musicxml"
20 | ],
21 | "author": "Daniel Ringwalt, arr. Chris Wilson",
22 | "license": "MIT",
23 | "bugs": {
24 | "url": "https://github.com/mechanicalscribe/vexflow-musicxml/issues"
25 | },
26 | "homepage": "https://github.com/mechanicalscribe/vexflow-musicxml",
27 | "dependencies": {
28 | "browserify": "^8.1.1",
29 | "minimist": "^1.1.0",
30 | "vexflow": "^1.2.27"
31 | }
32 | }
33 |
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/README.md:
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1 | # VexFlow MusicXML plugin
2 |
3 | A plugin for parsing and engraving MusicXML documents
4 | in [VexFlow](https://github.com/0xFE/vexflow).
5 | Thanks to @wilson428 for reorganizing the project as a plugin,
6 | so it can be worked on independently of the upstream VexFlow.
7 |
8 | ## Installation
9 |
10 | Clone this repo and install the dependencies
11 |
12 | git clone git@github.com:mechanicalscribe/vexflow-musicxml.git && cd vexflow-musicxml
13 | npm install
14 |
15 | ./build.js --include-vexflow
16 |
17 | This will generate a file called [vexflow.musicxml.js](vexflow.musicxml.js). To use it, all you need to do is include it.
18 |
19 |
20 |
21 | After building the script you can see this in action at [demo/index.html](demo/index.html), though you'll need to spin up a server since the page makes an AJAX call to the XML file with the actual music in it:
22 |
23 | python -m SimpleHTTPServer 8080
24 |
25 | Then head on over to [localhost:8080/demo/index.html](http://localhost:8080/demo/index.html) for some Moonlight Sonata rendered live in your browser.
26 |
27 | ## Build options
28 |
29 | To skip the VexFlow source and just use this as a plugin, omit `--include-vexflow` in the build:
30 |
31 | ./build.js
32 |
33 | Then you'd want to do something like:
34 |
35 |
36 |
37 |
38 | To include source maps:
39 |
40 | ./build.js --debug
41 |
42 | To include Vexflow from somewhere other than `node_modules`:
43 |
44 | ./build.js --path=path/to/vexflow/js_file
45 |
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/demo/index.html:
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1 |
2 |
3 | VexFlow MusicXML Demo
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
22 |
23 |
51 |
52 |
53 |
54 |
55 |
56 |
57 |
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/demo/debug.html:
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1 |
2 |
3 | VexFlow MusicXML Demo
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
25 |
26 |
55 |
56 |
57 |
58 |
59 |
60 |
61 |
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/Gruntfile.js:
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1 | // Gruntfile for VexFlow MusicXML plugin.
2 | // Adapted from VexFlow Gruntfile
3 | // by Mohit Muthanna Cheppudira
4 |
5 | module.exports = function(grunt) {
6 | var L = grunt.log.writeln;
7 | var BANNER = '/**\n' +
8 | ' * VexFlow MusicXML plugin <%= pkg.version %> built on <%= grunt.template.today("yyyy-mm-dd") %>.\n' +
9 | ' * Copyright (c) 2015 Daniel Ringwalt \n' +
10 | ' *\n' +
11 | ' * http://github.com/ringw/vexflow\n' +
12 | ' */\n';
13 | var BUILD_DIR = 'build';
14 | var RELEASE_DIR = 'releases';
15 | var TARGET_RAW = BUILD_DIR + '/vexflow-musicxml.js';
16 | var TARGET_MIN = BUILD_DIR + '/vexflow-musicxml-min.js';
17 |
18 | var SOURCES = [ "src/measure.js",
19 | "src/musicxml.js",
20 | "src/document.js",
21 | "src/documentformatter.js",
22 |
23 | "src/*.js", "!src/header.js", "!src/container.js"];
24 |
25 | grunt.initConfig({
26 | pkg: grunt.file.readJSON('package.json'),
27 | concat: {
28 | options: {
29 | banner: BANNER
30 | },
31 | build: {
32 | src: SOURCES,
33 | dest: TARGET_RAW
34 | }
35 | },
36 | uglify: {
37 | options: {
38 | banner: BANNER,
39 | sourceMap: true
40 | },
41 | build: {
42 | src: SOURCES,
43 | dest: TARGET_MIN
44 | }
45 | },
46 | jshint: {
47 | files: SOURCES,
48 | options: {
49 | eqnull: true, // allow == and ~= for nulls
50 | sub: true, // don't enforce dot notation
51 | trailing: true, // no more trailing spaces
52 | globals: {
53 | "Vex": false,
54 | "Raphael": false
55 | }
56 | }
57 | },
58 | watch: {
59 | scripts: {
60 | files: ['src/*', 'Gruntfile.js'],
61 | tasks: ['concat', 'jshint'],
62 | options: {
63 | interrupt: true
64 | }
65 | }
66 | },
67 | copy: {
68 | release: {
69 | files: [
70 | {
71 | expand: true,
72 | dest: RELEASE_DIR,
73 | cwd: BUILD_DIR,
74 | src : ['*.js', 'docs/**', '*.map']
75 | }
76 | ]
77 | }
78 | },
79 | docco: {
80 | src: SOURCES,
81 | options: {
82 | layout: 'linear',
83 | output: 'build/docs'
84 | }
85 | },
86 | gitcommit: {
87 | releases: {
88 | options: {
89 | message: "Committing release binaries for new version: <%= pkg.version %>",
90 | verbose: true
91 | },
92 | files: [
93 | {
94 | src: [RELEASE_DIR + "/*.js", RELEASE_DIR + "/*.map"],
95 | expand: true
96 | }
97 | ]
98 | }
99 | },
100 | bump: {
101 | options: {
102 | files: ['package.json', 'component.json'],
103 | commitFiles: ['package.json', 'component.json'],
104 | updateConfigs: ['pkg'],
105 | createTag: false,
106 | push: false
107 | }
108 | },
109 | release: {
110 | options: {
111 | bump: false,
112 | commit: false
113 | }
114 | },
115 | clean: [BUILD_DIR, RELEASE_DIR],
116 | });
117 |
118 | // Load the plugin that provides the "uglify" task.
119 | grunt.loadNpmTasks('grunt-contrib-concat');
120 | grunt.loadNpmTasks('grunt-contrib-uglify');
121 | grunt.loadNpmTasks('grunt-contrib-jshint');
122 | grunt.loadNpmTasks('grunt-contrib-watch');
123 | grunt.loadNpmTasks('grunt-contrib-qunit');
124 | grunt.loadNpmTasks('grunt-contrib-copy');
125 | grunt.loadNpmTasks('grunt-contrib-clean');
126 | grunt.loadNpmTasks('grunt-docco');
127 | grunt.loadNpmTasks('grunt-release');
128 | grunt.loadNpmTasks('grunt-bump');
129 | grunt.loadNpmTasks('grunt-git');
130 |
131 | // Default task(s).
132 | grunt.registerTask('default', ['jshint', 'concat', 'uglify', 'docco']);
133 |
134 | grunt.registerTask('test', 'Run qunit tests.', function() {
135 | grunt.task.run('qunit');
136 | });
137 |
138 | // Release current build.
139 | grunt.registerTask('stage', 'Stage current binaries to releases/.', function() {
140 | grunt.task.run('default');
141 | grunt.task.run('copy:release');
142 | });
143 | };
144 |
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/src/document.js:
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1 | /**
2 | * Document - generic document object to be formatted and displayed
3 | * @author Daniel Ringwalt (ringw)
4 | */
5 |
6 | if (! Vex.Flow.Backend) Vex.Flow.Backend = {};
7 |
8 | /**
9 | * Vex.Flow.Backend.IR - return measures from intermediate JSON representation
10 | * @constructor
11 | */
12 | Vex.Flow.Backend.IR = function() {
13 | this.documentObject = null;
14 | }
15 |
16 | /**
17 | * "Parse" an existing IR document object (not necessarily a Document instance)
18 | * @param object The original document object
19 | */
20 | Vex.Flow.Backend.IR.prototype.parse = function(object) {
21 | if (! Vex.Flow.Backend.IR.appearsValid(object))
22 | throw new Vex.RERR("InvalidArgument",
23 | "IR object must be a valid document");
24 |
25 | // Force a first-class document object to get all measures
26 | if (typeof object.getNumberOfMeasures == "function"
27 | && typeof object.getMeasure == "function") {
28 | var numMeasures = object.getNumberOfMeasures();
29 | for (var i = 0; i < numMeasures; i++) object.getMeasure(i);
30 | }
31 | this.documentObject = object;
32 | this.valid = true;
33 | }
34 |
35 | /**
36 | * Returns true if the passed-in code parsed without errors.
37 | *
38 | * @return {Boolean} True if code is error-free.
39 | */
40 | Vex.Flow.Backend.IR.prototype.isValid = function() { return this.valid; }
41 |
42 | /**
43 | * Class method.
44 | * Returns true if the argument appears to a valid document object.
45 | * Used when automatically detecting VexFlow IR.
46 | *
47 | * @return {Boolean} True if object looks like a valid document.
48 | */
49 | Vex.Flow.Backend.IR.appearsValid = function(object) {
50 | return typeof object == "object" && object.type == "document";
51 | }
52 |
53 | /**
54 | * Number of measures in the document
55 | *
56 | * @return {Number} Total number of measures
57 | */
58 | Vex.Flow.Backend.IR.prototype.getNumberOfMeasures = function() {
59 | return this.documentObject.measures.length;
60 | }
61 |
62 | /**
63 | * Create the ith measure from this.measures[i]
64 | *
65 | * @return {Vex.Flow.Measure} ith measure as a Measure object
66 | */
67 | Vex.Flow.Backend.IR.prototype.getMeasure = function(i) {
68 | return new Vex.Flow.Measure(this.documentObject.measures[i]);
69 | }
70 |
71 | /**
72 | * @return {Array} Stave connectors
73 | * Each stave connector has a type, array of parts, and one or more true
74 | * out of system_start, measure_start, and system_end.
75 | */
76 | Vex.Flow.Backend.IR.prototype.getStaveConnectors = function() {
77 | if (typeof this.documentObject.getStaveConnectors == "function")
78 | return this.documentObject.getStaveConnectors();
79 | return [];
80 | }
81 |
82 | /**
83 | * Vex.Flow.Document - generic container of measures generated by a backend
84 | * @constructor
85 | */
86 | Vex.Flow.Document = function(data, options) {
87 | if (arguments.length > 0) this.init(data, options);
88 | }
89 |
90 | Vex.Flow.Document.backends = [Vex.Flow.Backend.IR, Vex.Flow.Backend.MusicXML];
91 |
92 | Vex.Flow.Document.prototype.init = function(data, options) {
93 | this.options = {};
94 | Vex.Merge(this.options, options);
95 | this.measures = new Array();
96 | if (! data) {
97 | this.backend = null;
98 | return;
99 | }
100 |
101 | // Optionally pass constructor function for backend
102 | var backends = (typeof this.options.backend == "function")
103 | ? [this.options.backend] : Vex.Flow.Document.backends;
104 |
105 | // find a valid backend for the data passed
106 | for (var i = 0; i < backends.length; i++) {
107 | var Backend = backends[i];
108 | if (Backend.appearsValid(data)) {
109 | this.backend = new Backend();
110 | this.backend.parse(data);
111 | if (! this.backend.isValid()) {
112 | throw new Vex.RERR("ParseError", "Could not parse document data");
113 | }
114 | }
115 | }
116 | if (! this.backend) {
117 | throw new Vex.RERR("ParseError", "Data in document is not supported");
118 | }
119 |
120 | this.type = "document";
121 | }
122 |
123 | /**
124 | * Create a formatter with a copy of the document
125 | * (formatter may add clefs, etc. when formatting document)
126 | * @param {Function} Class of formatter
127 | * @return {Vex.Flow.DocumentFormatter} Document formatter with document copy
128 | */
129 | Vex.Flow.Document.prototype.getFormatter = function(formatterClass) {
130 | var Formatter = formatterClass;
131 | if (typeof formatterClass != "function")
132 | Formatter = Vex.Flow.DocumentFormatter.Liquid; // default class
133 | return new Formatter(new Vex.Flow.Document(this));
134 | }
135 |
136 | /**
137 | * Number of measures in the document
138 | * @return {Number} Total number of measures
139 | */
140 | Vex.Flow.Document.prototype.getNumberOfMeasures = function() {
141 | return this.backend.getNumberOfMeasures();
142 | }
143 |
144 | /**
145 | * @param {Number} Zero-indexed measure number
146 | * @return {Number} Actual measure number (default: add 1 to argument)
147 | */
148 | Vex.Flow.Document.prototype.getMeasureNumber = function(m) {
149 | return (typeof this.backend.getMeasureNumber == "function")
150 | ? this.backend.getMeasureNumber(m) : m + 1;
151 | }
152 |
153 | /**
154 | * Retrieve the ith measure (zero-indexed).
155 | * @param {Number} The zero-indexed measure to access.
156 | * @return {Vex.Flow.Measure} Measure object for corresponding measure
157 | */
158 | Vex.Flow.Document.prototype.getMeasure = function(m) {
159 | if (m in this.measures) return this.measures[m];
160 | var measure = this.backend.getMeasure(m);
161 | if (typeof console != "undefined" && console.assert)
162 | console.assert(measure instanceof Vex.Flow.Measure,
163 | "Backend must return valid Vex.Flow.Measure");
164 | this.measures[m] = measure;
165 | return measure;
166 | }
167 |
168 | Vex.Flow.Document.prototype.getNumberOfParts = function() {
169 | return this.getMeasure(0).getNumberOfParts(); }
170 |
171 | /**
172 | * Connector options from backend
173 | * Single connectors are automatically added at the start of the system
174 | * and for barlines within a single part.
175 | * @return {Array} array of objects with properties:
176 | * type (bracket, brace, single, etc), parts (array of part numbers),
177 | * system_start/system_end/measure_start (true/false)
178 | */
179 | Vex.Flow.Document.prototype.getStaveConnectors = function() {
180 | if (typeof this.staveConnectors != "object") {
181 | this.staveConnectors = this.backend.getStaveConnectors().slice(0);
182 | var haveSingleSystemStart = false; // add if necessary
183 | var numParts = this.getNumberOfParts();
184 | var lastPart = numParts - 1;
185 | this.staveConnectors.forEach(function(connector) {
186 | if (connector.type == "single" && connector.parts[0] == 0
187 | && connector.parts[connector.parts.length - 1] == lastPart
188 | && (connector.system_start || connector.measure_start))
189 | haveSingleSystemStart = true;
190 | });
191 | if (! haveSingleSystemStart)
192 | this.staveConnectors.push({
193 | type: "single", system_start: true, parts: [0, lastPart]});
194 |
195 | // Add barlines to each part if necessary
196 | var partsHaveBarlines = [];
197 | this.staveConnectors.forEach(function(connector) {
198 | if (connector.type == "single" && connector.parts.length == 1
199 | && connector.measure_start && connector.system_end)
200 | partsHaveBarlines[connector.parts[0]] = true;
201 | });
202 | for (var i = 0; i < numParts; i++)
203 | if (! partsHaveBarlines[i])
204 | this.staveConnectors.push({
205 | type: "single", parts: [i], measure_start: true, system_end: true
206 | });
207 | }
208 | return this.staveConnectors;
209 | }
210 |
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/demo/document_tests.js:
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1 | /**
2 | * VexFlow - Document Tests (JSON and MusicXML)
3 | * @author Daniel Ringwalt (ringw)
4 | */
5 |
6 | Vex.Flow.Test.Document = {};
7 |
8 | Vex.Flow.Test.Document.Start = function() {
9 | module("Document");
10 | Vex.Flow.Test.runTests("Auto-generated Measure Test",
11 | Vex.Flow.Test.Document.measure);
12 | Vex.Flow.Test.runTests("Basic JSON IR Test", Vex.Flow.Test.Document.jsonSimple);
13 | Vex.Flow.Test.runTests("Complex JSON IR Test", Vex.Flow.Test.Document.jsonComplex);
14 | Vex.Flow.Test.runTests("Basic MusicXML Test", Vex.Flow.Test.Document.xmlSimple);
15 | Vex.Flow.Test.runTests("MusicXML Document Test", Vex.Flow.Test.Document.xmlDoc);
16 | };
17 |
18 | Vex.Flow.Test.Document.measure = function(options, contextBuilder) {
19 | expect(14);
20 | // Custom backend programmatically generates measures
21 | var CustomBackend = function() {};
22 | CustomBackend.appearsValid = function(arg) { return true; };
23 | CustomBackend.prototype.parse = function(arg) { };
24 | CustomBackend.prototype.isValid = function() { return true; };
25 | CustomBackend.prototype.getNumberOfMeasures = function() { return 2; };
26 | CustomBackend.prototype.getMeasure = function(i) {
27 | var time = {num_beats: 4, beat_value: 4};
28 | var measure = new Vex.Flow.Measure({time: time});
29 | measure.setPart(0, {time: time, clef: "treble", key: "D"});
30 | switch (i) {
31 | case 0:
32 | measure.addNote({keys: ["d/4"], duration: "4"});
33 | measure.addNote({keys: ["e/4"], duration: "4"});
34 | measure.addNote({keys: ["f#/4"], duration: "4"});
35 | measure.addNote({keys: ["g/4"], duration: "4"});
36 | break;
37 | case 1:
38 | measure.addNote({keys: ["f/4"], duration: "4"});
39 | measure.addNote({keys: ["ebb/4"], duration: "4"});
40 | measure.addNote({keys: ["f#/4"], duration: "4"});
41 | measure.addNote({keys: ["g##/4"], duration: "4"});
42 | break;
43 | }
44 | Vex.Flow.Backend.IR.prototype.getStaveConnectors = function() {
45 | return [];
46 | }
47 | ok(true, "added notes to measure");
48 | return measure;
49 | };
50 | // argument must evaluate to true
51 | var doc = new Vex.Flow.Document({}, {backend: CustomBackend});
52 | ok(doc instanceof Vex.Flow.Document, "created document");
53 | ok(doc.getNumberOfMeasures() == 2, "correct number of measures");
54 | var measure = doc.getMeasure(0);
55 | ok(measure instanceof Vex.Flow.Measure, "created measure");
56 | ok(measure.getNumberOfParts() == 1, "measure has correct # parts");
57 | var part = measure.getPart(0);
58 | ok(part instanceof Vex.Flow.Measure.Part, "part from measure");
59 | ok(measure.getNumberOfStaves() == 1, "measures has correct # staves");
60 | var stave = measure.getStave(0);
61 | ok(stave instanceof Vex.Flow.Measure.Stave, "stave from measure");
62 |
63 | ok(part.getNumberOfVoices() == 1, "part has correct # voices");
64 | var voice = part.getVoice(0);
65 | ok(voice instanceof Vex.Flow.Measure.Voice, "voice from part");
66 |
67 | var formatter = doc.getFormatter();
68 | ok(formatter instanceof Vex.Flow.DocumentFormatter.Liquid, "formatter ok");
69 | formatter.setWidth(400);
70 | var block = formatter.getBlock(0);
71 | ok(block[0] == 400, "block has correct width");
72 |
73 | var ctx = new contextBuilder(options.canvas_sel, 400, 120);
74 | formatter.drawBlock(0, ctx);
75 | ok(true, "drew document");
76 | }
77 |
78 | Vex.Flow.Test.Document.jsonSimple = function(options, contextBuilder) {
79 | expect(4);
80 | var jsonDoc = {type: "document", measures: [
81 | {type: "measure", time: {num_beats: 4, beat_value: 4},
82 | parts: [
83 | {type: "part", time: {num_beats: 4, beat_value: 4},
84 | clef: "treble", key: "C",
85 | voices: [
86 | {notes: [
87 | {type: "note", keys: ["c/4"], duration: "1", stem_direction: -1}
88 | ]},
89 | {notes: [
90 | {type: "note", keys: ["g/4"], accidentals: ["n"], duration: "4"},
91 | {type: "note", keys: ["a/4"], duration: "4"},
92 | {type: "note", keys: ["bb/4"], duration: "8", beam: "begin",
93 | stem_direction: -1},
94 | {type: "note", keys: ["c/5"], duration: "8", beam: "continue",
95 | stem_direction: -1},
96 | {type: "note", keys: ["b/4"], duration: "16", beam: "continue",
97 | stem_direction: -1},
98 | {type: "note", keys: ["e/5"], duration: "16", beam: "continue",
99 | stem_direction: -1},
100 | {type: "note", keys: ["f/5"], duration: "8", beam: "end",
101 | stem_direction: -1}
102 | ]}
103 | ]}
104 | ]}
105 | ]};
106 | var doc = new Vex.Flow.Document(jsonDoc);
107 | ok(doc instanceof Vex.Flow.Document, "created document");
108 | ok(doc.getNumberOfMeasures() == 1, "correct number of measures");
109 | var measure = doc.getMeasure(0);
110 | ok(measure instanceof Vex.Flow.Measure, "created measure");
111 |
112 | var ctx = new contextBuilder(options.canvas_sel, 300, 120);
113 | doc.getFormatter().setWidth(300).drawBlock(0, ctx);
114 | ok(true, "drew document");
115 | }
116 |
117 | Vex.Flow.Test.Document.jsonComplex = function(options, contextBuilder) {
118 | expect(4);
119 | var jsonDoc = {type: "document", measures: [
120 | {type: "measure", time: {num_beats: 4, beat_value: 4},
121 | parts: [
122 | {type: "part", time: {num_beats: 4, beat_value: 4},
123 | staves: [
124 | {type: "stave", time: {num_beats: 4, beat_value: 4}, clef: "treble"},
125 | {type: "stave", time: {num_beats: 4, beat_value: 4}, clef: "bass"}
126 | ],
127 | voices: [
128 | {type: "voice", time: {num_beats: 4, beat_value: 4}, stave: 1,
129 | notes: [
130 | {type: "note", keys: ["c/3"], duration: "1", stem_direction: -1}
131 | ]},
132 | {type: "voice", time: {num_beats: 4, beat_value: 4}, stave: 1,
133 | notes: [
134 | {type: "note", keys: ["c/4"], duration: "4"},
135 | {type: "note", keys: ["b/3"], duration: "4"},
136 | {type: "note", keys: ["a/3"], duration: "4"},
137 | {type: "note", keys: ["g/3"], duration: "4"}
138 | ]},
139 | {type: "voice", time: {num_beats: 4, beat_value: 4}, stave: 0,
140 | notes: [
141 | {type: "note", keys: ["g/4"], duration: "4"},
142 | {type: "note", keys: ["a/4"], duration: "4"},
143 | {type: "note", keys: ["b/4"], duration: "8", beam: "begin",
144 | stem_direction: -1},
145 | {type: "note", keys: ["c/5"], duration: "8", beam: "continue",
146 | stem_direction: -1},
147 | {type: "note", keys: ["d/5"], duration: "16", beam: "continue",
148 | stem_direction: -1},
149 | {type: "note", keys: ["e/5"], duration: "16", beam: "continue",
150 | stem_direction: -1},
151 | {type: "note", keys: ["f/5"], duration: "8", beam: "end",
152 | stem_direction: -1}
153 | ]}
154 | ]}
155 | ]}
156 | ]};
157 | var doc = new Vex.Flow.Document(jsonDoc);
158 | ok(doc instanceof Vex.Flow.Document, "created document");
159 | ok(doc.getNumberOfMeasures() == 1, "correct number of measures");
160 | var measure = doc.getMeasure(0);
161 | ok(measure instanceof Vex.Flow.Measure, "created measure");
162 |
163 | var ctx = new contextBuilder(options.canvas_sel, 300, 220);
164 | doc.getFormatter().setWidth(300).drawBlock(0, ctx);
165 | ok(true, "drew document");
166 | }
167 |
168 | Vex.Flow.Test.Document.xmlSimple = function(options, contextBuilder) {
169 | expect(2);
170 |
171 | var docString = '\
172 | \
175 | \
176 | \
177 | \
178 | Music\
179 | \
180 | \
181 | \
182 | \
183 | \
184 | 1\
185 | \
186 | 0\
187 | \
188 | \
192 | \
193 | G\
194 | 2\
195 | \
196 | \
197 | \
198 | \
199 | C\
200 | 4\
201 | \
202 | 4\
203 | whole\
204 | \
205 | \
206 | \
207 | ';
208 | var doc = new Vex.Flow.Document(docString);
209 | ok(true, "created document");
210 |
211 | var ctx = new contextBuilder(options.canvas_sel, 300, 120);
212 | doc.getFormatter().setWidth(300).drawBlock(0, ctx);
213 | ok(true, "drew document");
214 | }
215 | Vex.Flow.Test.Document.Fetch = function(uri) {
216 | var req = new XMLHttpRequest();
217 | req.open('GET', uri, false);
218 | req.send(null);
219 | if (req.readyState != 4) return undefined;
220 | return req.responseText;
221 | };
222 | Vex.Flow.Test.Document.xmlDoc = function(options, contextBuilder) {
223 | var docString;
224 | try {
225 | docString = Vex.Flow.Test.Document.Fetch("../docs/samples/bach_bwv846p.xml");
226 | }
227 | catch (e) {
228 | ok(true, "Skipping test; browser does not support local file:// AJAX");
229 | $("#" + options.canvas_sel).replaceWith("Skip: Make sure your browser supports file:// AJAX requests.");
230 | return;
231 | }
232 | if (! docString) {
233 | ok(false, "Document does not exist");
234 | return;
235 | }
236 | expect(2);
237 | var doc = new Vex.Flow.Document(docString);
238 | ok(true, "created document");
239 |
240 | var formatter = doc.getFormatter();
241 | formatter.setWidth(800);
242 | var ctx = new contextBuilder(options.canvas_sel, 480, 120);
243 | ctx.scale(0.6, 0.6);
244 | formatter.drawBlock(0, ctx);
245 | ok(true, "drew document");
246 | };
247 |
--------------------------------------------------------------------------------
/src/measure.js:
--------------------------------------------------------------------------------
1 | /**
2 | * Measure - intermediate representation of measures of a Vex.Flow.Document
3 | * @author Daniel Ringwalt (ringw)
4 | */
5 |
6 | /** @constructor */
7 | Vex.Flow.Measure = function(object) {
8 | if (typeof object != "object")
9 | throw new Vex.RERR("ArgumentError","Invalid argument to Vex.Flow.Measure");
10 | if (! object.time || ! object.time.num_beats || ! object.time.beat_value)
11 | throw new Vex.RERR("ArgumentError",
12 | "Measure must be initialized with nonzero num_beats and beat_value");
13 | this.time = Vex.Merge({}, object.time);
14 |
15 | this.attributes = {};
16 | if (typeof object.attributes == "object")
17 | Vex.Merge(this.attributes, object.attributes);
18 | this.parts = new Array(1); // default to 1 part
19 | if (typeof object.getParts == "function")
20 | this.parts = object.getParts(); // Copy parts from first-class object
21 | else if (object.parts instanceof Array) {
22 | this.parts.length = object.parts.length;
23 | for (var i = 0; i < object.parts.length; i++)
24 | this.parts[i] = new Vex.Flow.Measure.Part(object.parts[i]);
25 | }
26 |
27 | this.type = "measure";
28 | }
29 |
30 | Vex.Flow.Measure.prototype.setAttributes = function(attributes) {
31 | Vex.Merge(this.attributes, attributes);
32 | }
33 |
34 | Vex.Flow.Measure.prototype.getNumberOfParts = function(numParts) {
35 | return this.parts.length;
36 | }
37 | Vex.Flow.Measure.prototype.setNumberOfParts = function(numParts) {
38 | this.parts.length = numParts;
39 | }
40 |
41 | Vex.Flow.Measure.prototype.getPart = function(partNum) {
42 | if (! this.parts[partNum]) {
43 | // Create empty part
44 | this.parts[partNum] = new Vex.Flow.Measure.Part({time: this.time});
45 | }
46 | return this.parts[partNum];
47 | }
48 | Vex.Flow.Measure.prototype.setPart = function(partNum, part) {
49 | if (this.parts.length <= partNum)
50 | throw new Vex.RERR("ArgumentError",
51 | "Set number of parts before adding part");
52 | this.parts[partNum] = new Vex.Flow.Measure.Part(part);
53 | }
54 | Vex.Flow.Measure.prototype.getParts = function() {
55 | for (var i = 0; i < this.parts.length; i++) this.getPart(i);
56 | return this.parts.slice(0); // copy array
57 | }
58 |
59 | Vex.Flow.Measure.prototype.getNumberOfStaves = function() {
60 | // Sum number of staves from each part
61 | var totalStaves = 0;
62 | for (var i = 0; i < this.getNumberOfParts(); i++)
63 | totalStaves += this.getPart(i).getNumberOfStaves();
64 | return totalStaves;
65 | }
66 | Vex.Flow.Measure.prototype.getStave = function(staveNum) {
67 | var firstStaveForPart = 0;
68 | for (var i = 0; i < this.getNumberOfParts(); i++) {
69 | var part = this.getPart(i);
70 | if (firstStaveForPart + part.getNumberOfStaves() > staveNum)
71 | return part.getStave(staveNum - firstStaveForPart);
72 | firstStaveForPart += part.getNumberOfStaves();
73 | }
74 | return undefined;
75 | }
76 | Vex.Flow.Measure.prototype.getStaves = function() {
77 | var numStaves = this.getNumberOfStaves();
78 | var staves = new Array();
79 | for (var i = 0; i < numStaves; i++) staves.push(this.getStave(i));
80 | return staves;
81 | }
82 |
83 | /**
84 | * Add a note to the end of the voice.
85 | * This is a convenience method that only works when there is one part and
86 | * one voice. If there is no room for the note, a Vex.RuntimeError is thrown.
87 | * @param {Object} Note object
88 | */
89 | Vex.Flow.Measure.prototype.addNote = function(note) {
90 | if (this.getNumberOfParts() != 1)
91 | throw new Vex.RERR("ArgumentError","Measure.addNote requires single part");
92 | this.getPart(0).addNote(note);
93 | }
94 |
95 | /**
96 | * Vex.Flow.Measure.Part - a single part (may include multiple staves/voices)
97 | * @constructor
98 | */
99 | Vex.Flow.Measure.Part = function(object) {
100 | if (typeof object != "object")
101 | throw new Vex.RERR("ArgumentError", "Invalid argument to constructor");
102 | if (! object.time || ! object.time.num_beats || ! object.time.beat_value)
103 | throw new Vex.RERR("ArgumentError",
104 | "Constructor requires nonzero num_beats and beat_value");
105 | this.time = Vex.Merge({}, object.time);
106 |
107 | // Convenience options which can be set on a part instead of a stave/voice
108 | this.options = {time: this.time};
109 | if (typeof object.clef == "string") this.options.clef = object.clef;
110 | if (typeof object.key == "string") this.options.key = object.key;
111 | if (typeof object.time_signature == "string") {
112 | this.options.time_signature = object.time_signature;
113 | }
114 | if (typeof object.options == "object")
115 | Vex.Merge(this.options, object.options);
116 |
117 | if (typeof object.getVoices == "function") this.voices = object.getVoices();
118 | else if (object.voices instanceof Array) {
119 | var voiceOptions = this.options;
120 | this.voices = object.voices.map(function(voice) {
121 | // Copy voiceOptions and overwrite with options from argument
122 | return new Vex.Flow.Measure.Voice(
123 | Vex.Merge(Vex.Merge({}, voiceOptions), voice));
124 | });
125 | }
126 | else this.voices = new Array(1); // Default to single voice
127 |
128 | if (typeof object.getStaves == "function") this.staves = object.getStaves();
129 | else if (object.staves instanceof Array) {
130 | var staveOptions = this.options;
131 | this.staves = object.staves.map(function(stave) {
132 | var staveObj;
133 | if (typeof stave == "string") // interpret stave as clef value
134 | staveObj = Vex.Merge({clef: stave}, staveOptions);
135 | // Copy staveOptions and overwrite with options from argument
136 | else staveObj = Vex.Merge(Vex.Merge({}, staveOptions), stave);
137 | return new Vex.Flow.Measure.Stave(staveObj);
138 | });
139 | }
140 | else {
141 | if (typeof object.staves == "number")
142 | this.staves = new Array(object.staves);
143 | else this.staves = new Array(1);
144 | }
145 |
146 | this.type = "part";
147 | }
148 |
149 | Vex.Flow.Measure.Part.prototype.getNumberOfVoices = function(numVoices) {
150 | return this.voices.length;
151 | }
152 | Vex.Flow.Measure.Part.prototype.setNumberOfVoices = function(numVoices) {
153 | this.voices.length = numVoices;
154 | }
155 | Vex.Flow.Measure.Part.prototype.getVoice = function(voiceNum) {
156 | if (! this.voices[voiceNum])
157 | // Create empty voice
158 | this.voices[voiceNum] = new Vex.Flow.Measure.Voice(
159 | Vex.Merge({time: this.time}, this.options));
160 | return this.voices[voiceNum];
161 | }
162 | Vex.Flow.Measure.Part.prototype.setVoice = function(voiceNum, voice) {
163 | if (this.voices.length <= voiceNum)
164 | throw new Vex.RERR("ArgumentError",
165 | "Set number of voices before adding voice");
166 | this.voices[voiceNum] = new Vex.Flow.Measure.Voice(voice);
167 | }
168 | Vex.Flow.Measure.Part.prototype.getVoices = function() {
169 | for (var i = 0; i < this.getNumberOfVoices(); i++) this.getVoice(i);
170 | return this.voices.slice(0);
171 | }
172 |
173 | Vex.Flow.Measure.Part.prototype.getNumberOfStaves = function(numStaves) {
174 | return this.staves.length;
175 | }
176 | Vex.Flow.Measure.Part.prototype.setNumberOfStaves = function(numStaves) {
177 | this.staves.length = numStaves;
178 | }
179 | Vex.Flow.Measure.Part.prototype.getStave = function(staveNum) {
180 | if (! this.staves[staveNum]) {
181 | // Create empty stave
182 | this.staves[staveNum] = new Vex.Flow.Measure.Stave(
183 | Vex.Merge({time: this.time}, this.options));
184 | }
185 | return this.staves[staveNum];
186 | }
187 | Vex.Flow.Measure.Part.prototype.setStave = function(staveNum, stave) {
188 | if (this.staves.length <= staveNum)
189 | throw new Vex.RERR("ArgumentError",
190 | "Set number of staves before adding stave");
191 | this.staves[staveNum] = new Vex.Flow.Measure.Stave(
192 | Vex.Merge(Vex.Merge({}, this.options), stave));
193 | }
194 | Vex.Flow.Measure.Part.prototype.getStaves = function() {
195 | for (var i = 0; i < this.getNumberOfStaves(); i++) this.getStave(i);
196 | return this.staves.slice(0);
197 | }
198 |
199 | /* True if there should be a brace at the start of every line for this part. */
200 | Vex.Flow.Measure.Part.prototype.showsBrace = function() {
201 | return (this.staves.length > 1);
202 | }
203 |
204 | /**
205 | * Add a note to the end of the voice.
206 | * This is a convenience method that only works when the part only has
207 | * one voice. If there is no room for the note, a Vex.RuntimeError is thrown.
208 | * @param {Object} Note object
209 | */
210 | Vex.Flow.Measure.Part.prototype.addNote = function(note) {
211 | if (this.getNumberOfVoices() != 1)
212 | throw new Vex.RERR("ArgumentError","Measure.addNote requires single part");
213 | this.getVoice(0).addNote(note);
214 | }
215 |
216 | /**
217 | * Vex.Flow.Measure.Voice - a voice which contains notes, etc
218 | * @constructor
219 | */
220 | Vex.Flow.Measure.Voice = function(object) {
221 | if (typeof object != "object")
222 | throw new Vex.RERR("ArgumentError", "Invalid argument to constructor");
223 | if (! object.time || ! object.time.num_beats || ! object.time.beat_value)
224 | throw new Vex.RERR("ArgumentError",
225 | "Constructor requires nonzero num_beats and beat_value");
226 | this.time = Vex.Merge({}, object.time);
227 | this.key = (typeof object.key == "string") ? object.key : null;
228 | this.notes = new Array();
229 | if (object.notes instanceof Array)
230 | object.notes.forEach(function(note) {
231 | this.addNote(new Vex.Flow.Measure.Note(note)); }, this);
232 | else this.notes = new Array();
233 |
234 | // Voice must currently be on a single stave
235 | if (typeof object.stave == "number") this.stave = object.stave;
236 | else this.stave = 0;
237 |
238 | this.type = "voice";
239 | }
240 |
241 | Vex.Flow.Measure.Voice.keyAccidentals = function(key) {
242 | var acc = {C:null, D:null, E:null, F:null, G:null, A:null, B:null};
243 | var acc_order = {"b": ["B","E","A","D","G","C","F"],
244 | "#": ["F","C","G","D","A","E","B"]};
245 | var key_acc = Vex.Flow.keySignature.keySpecs[key];
246 | var key_acctype = key_acc.acc, num_acc = key_acc.num;
247 | for (var i = 0; i < num_acc; i++)
248 | acc[acc_order[key_acctype][i]] = key_acctype;
249 | return acc;
250 | }
251 |
252 | /**
253 | * Add a note to the end of the voice.
254 | * If there is no room for the note, a Vex.RuntimeError is thrown.
255 | * @param {Object} Note object
256 | */
257 | Vex.Flow.Measure.Voice.prototype.addNote = function(note) {
258 | // TODO: Check total ticks in voice
259 | var noteObj = new Vex.Flow.Measure.Note(note); // copy note
260 | if (!note.rest && this.key && note.accidentals == null) {
261 | // Generate accidentals automatically
262 | // Track accidentals used previously in measure
263 | if (! this._accidentals)
264 | this._accidentals = Vex.Flow.Measure.Voice.keyAccidentals(this.key);
265 | var accidentals = this._accidentals;
266 | var i = 0;
267 | noteObj.accidentals = noteObj.keys.map(function(key) {
268 | var acc = Vex.Flow.Measure.Note.Key.GetAccidental(key);
269 | if (acc == "n") {
270 | // Force natural
271 | accidentals[key] = null;
272 | }
273 | else {
274 | var key = note.keys[i][0].toUpperCase(); // letter name of key
275 | if (accidentals[key] == acc) acc = null;
276 | else {
277 | accidentals[key] = acc;
278 | if (acc == null) acc = "n";
279 | }
280 | }
281 | i++;
282 | return acc;
283 | });
284 | }
285 | this.notes.push(new Vex.Flow.Measure.Note(noteObj));
286 | }
287 |
288 | /**
289 | * Vex.Flow.Measure.Stave - represent one "stave" for one measure
290 | * (corresponds to a Vex.Flow.Stave)
291 | * @constructor
292 | */
293 | Vex.Flow.Measure.Stave = function(object) {
294 | if (typeof object != "object")
295 | throw new Vex.RERR("ArgumentError", "Invalid argument to constructor");
296 | if (! object.time || ! object.time.num_beats || ! object.time.beat_value)
297 | throw new Vex.RERR("ArgumentError",
298 | "Constructor requires nonzero num_beats and beat_value");
299 | this.time = Vex.Merge({}, object.time);
300 | if (typeof object.clef != "string")
301 | throw new Vex.RERR("InvalidIRError",
302 | "Stave object requires clef property");
303 | this.clef = object.clef;
304 | this.key = (typeof object.key == "string") ? object.key : null;
305 | this.modifiers = new Array();
306 | if (object.modifiers instanceof Array) {
307 | for (var i = 0; i < object.modifiers.length; i++)
308 | this.addModifier(object.modifiers[i]);
309 | }
310 |
311 | this.type = "stave";
312 | }
313 |
314 | /**
315 | * Adds a modifier (clef, etc.), which is just a plain object with a type
316 | * and other properties.
317 | */
318 | Vex.Flow.Measure.Stave.prototype.addModifier = function(modifier) {
319 | // Type is required for modifiers
320 | if (typeof modifier != "object" || typeof modifier.type != "string")
321 | throw new Vex.RERR("InvalidIRError",
322 | "Stave modifier requires type string property");
323 | // Copy modifier
324 | // Automatic modifier: created by formatter, can be deleted
325 | var newModifier = {type: modifier.type,
326 | automatic: !!(modifier.automatic) // Force true/false
327 | };
328 | switch (modifier.type) {
329 | case "clef":
330 | if (typeof modifier.clef != "string")
331 | throw new Vex.RERR("InvalidIRError",
332 | "Clef modifier requires clef string");
333 | newModifier.clef = modifier.clef;
334 | break;
335 | case "key":
336 | if (typeof modifier.key != "string")
337 | throw new Vex.RERR("InvalidIRError",
338 | "Key modifier requires key string");
339 | newModifier.key = modifier.key;
340 | break;
341 | case "time":
342 | if (! modifier.num_beats || ! modifier.beat_value)
343 | throw new Vex.RERR("InvalidIRError",
344 | "Time modifier requires nonzero num_beats and beat_value");
345 | newModifier.num_beats = modifier.num_beats;
346 | newModifier.beat_value = modifier.beat_value;
347 | break;
348 | default:
349 | throw new Vex.RERR("InvalidIRError", "Modifier not recognized");
350 | }
351 | this.modifiers.push(newModifier);
352 | }
353 |
354 | /**
355 | * Find the modifier with the given type, or return null.
356 | */
357 | Vex.Flow.Measure.Stave.prototype.getModifier = function(type) {
358 | var mod = null;
359 | this.modifiers.forEach(function(m) { if (m.type == type) mod = m; });
360 | return mod;
361 | }
362 |
363 | /**
364 | * Delete modifier(s) which have the given type.
365 | *
366 | * @param {String} Type of modifier
367 | */
368 | Vex.Flow.Measure.Stave.prototype.deleteModifier = function(modifier) {
369 | if (typeof modifier != "string")
370 | throw new Vex.RERR("ArgumentError",
371 | "deleteModifier requires string argument");
372 | // Create new modifier array with non-matching modifiers
373 | var newModifiers = new Array();
374 | this.modifiers.forEach(function(mod) {
375 | if (mod.type != modifier) newModifiers.push(mod);
376 | });
377 | this.modifiers = newModifiers;
378 | }
379 |
380 | /**
381 | * Delete all automatic modifiers (used by formatter when a measure is no
382 | * longer at the beginning of a system.)
383 | * @return {Boolean} Whether any modifiers were deleted
384 | */
385 | Vex.Flow.Measure.Stave.prototype.deleteAutomaticModifiers = function() {
386 | // Create new modifier array with modifiers that remain
387 | var anyDeleted = false;
388 | var newModifiers = new Array();
389 | this.modifiers.forEach(function(mod) {
390 | if (mod.automatic) anyDeleted = true;
391 | else newModifiers.push(mod);
392 | });
393 | this.modifiers = newModifiers;
394 | return anyDeleted;
395 | }
396 |
397 | /**
398 | * Vex.Flow.Measure.Note - a single note (includes chords, rests, etc.)
399 | * @constructor
400 | */
401 | Vex.Flow.Measure.Note = function(object) {
402 | if (typeof object != "object")
403 | throw new Vex.RERR("ArgumentError", "Invalid argument to constructor");
404 | if (object.keys instanceof Array)
405 | // Copy keys array, converting each key value to the standard
406 | this.keys = object.keys.map(Vex.Flow.Measure.Note.Key);
407 | else this.keys = new Array();
408 | if (object.accidentals instanceof Array) {
409 | if (object.accidentals.length != this.keys.length)
410 | throw new Vex.RERR("InvalidIRError",
411 | "accidentals and keys must have same length");
412 | this.accidentals = object.accidentals.slice(0);
413 | }
414 | else this.accidentals = null; // default accidentals
415 | // Note: accidentals set by voice if this.accidentals == null
416 | // no accidentals if this.accidentals == [null, ...]
417 | this.duration = object.duration;
418 | this.rest = !!(object.rest); // force true or false
419 | this.intrinsicTicks = (object.intrinsicTicks > 0)
420 | ? object.intrinsicTicks : null;
421 | this.tickMultiplier = (typeof object.tickMultiplier == "object"
422 | && object.tickMultiplier)
423 | ? new Vex.Flow.Fraction(object.tickMultiplier.numerator,
424 | object.tickMultiplier.denominator)
425 | : this.intrinsicTicks
426 | ? new Vex.Flow.Fraction(1, 1) : null;
427 | this.tuplet = (typeof object.tuplet == "object" && object.tuplet)
428 | ? {num_notes: object.tuplet.num_notes,
429 | beats_occupied: object.tuplet.beats_occupied}
430 | : null;
431 | this.stem_direction = (typeof object.stem_direction == "number")
432 | ? object.stem_direction : null;
433 | this.beam = (typeof object.beam == "string")
434 | ? object.beam : null;
435 | this.tie = (typeof object.tie == "string")
436 | ? object.tie : null;
437 | this.lyric = (typeof object.lyric == "object" && object.lyric)
438 | ? {text: object.lyric.text}
439 | : null;
440 |
441 | this.type = "note";
442 | }
443 |
444 | /* Standardize a key string, returning the result */
445 | Vex.Flow.Measure.Note.Key = function(key) {
446 | // Remove natural, get properties
447 | var keyProperties = Vex.Flow.keyProperties(key.replace(/n/i, ""), "treble");
448 | return keyProperties.key + "/" + keyProperties.octave.toString();
449 | }
450 | /* Default accidental value from key */
451 | Vex.Flow.Measure.Note.Key.GetAccidental = function(key) {
452 | // Keep natural, return accidental from properties
453 | return Vex.Flow.keyProperties(key, "treble").accidental;
454 | }
455 |
--------------------------------------------------------------------------------
/src/musicxml.js:
--------------------------------------------------------------------------------
1 | /**
2 | * VexFlow MusicXML - DOM-based MusicXML backend for VexFlow Documents.
3 | * @author Daniel Ringwalt (ringw)
4 | */
5 |
6 | if (! Vex.Flow.Backend) Vex.Flow.Backend = {};
7 |
8 | /** @constructor */
9 | Vex.Flow.Backend.MusicXML = function() {
10 | this.partList = new Array();
11 | this.staveConnectors = new Array();
12 | // Create timewise array of arrays
13 | // Measures (zero-indexed) -> array of elements for each part
14 | this.measures = new Array();
15 | // Actual measure number for each measure
16 | // (Usually starts at 1, or 0 for pickup measure and numbers consecutively)
17 | this.measureNumbers = new Array();
18 | // Store number of staves for each part (zero-indexed)
19 | this.numStaves = new Array();
20 | // Track every child of any element in array
21 | // (except which is stored in numStaves)
22 | // Measures -> parts ->
23 | // object where keys are names of child elements ->
24 | // data representing the attribute
25 | this.attributes = new Array();
26 | }
27 |
28 | Vex.Flow.Backend.MusicXML.appearsValid = function(data) {
29 | if (typeof data == "string") {
30 | return data.search(/ 1) this.staveConnectors.push({
99 | type: "brace", parts: [partNum], system_start: true});
100 | partNum++;
101 | }, this);
102 |
103 | this.valid = true;
104 | }
105 |
106 | Vex.Flow.Backend.MusicXML.prototype.parsePartList = function(partListElem) {
107 | // We only care about stave connectors in part groups
108 | var partNum = 0;
109 | var partGroup = null;
110 | var staveConnectors = null; // array of stave connectors for part group
111 | Array.prototype.forEach.call(partListElem.childNodes, function(elem) {
112 | switch (elem.nodeName) {
113 | case "part-group":
114 | if (elem.getAttribute("type") == "start") {
115 | partGroup = [];
116 | staveConnectors = [];
117 | Array.prototype.forEach.call(elem.childNodes, function(groupElem) {
118 | switch (groupElem.nodeName) {
119 | case "group-symbol":
120 | if (groupElem.textContent == "bracket"
121 | || groupElem.textContent == "brace")
122 | // Supported connectors
123 | staveConnectors.push({type: groupElem.textContent,
124 | system_start: true});
125 | case "group-barline":
126 | if (groupElem.textContent == "yes")
127 | staveConnectors.push({type: "single", measure_start: true,
128 | system_end: true});
129 | }
130 | });
131 | }
132 | else if (elem.getAttribute("type") == "stop") {
133 | staveConnectors.forEach(function(connect) {
134 | connect.parts = partGroup;
135 | this.staveConnectors.push(connect);
136 | }, this);
137 | partGroup = staveConnectors = null;
138 | }
139 | break;
140 | case "score-part":
141 | if (partGroup) partGroup.push(partNum);
142 | this.partList.push(partNum);
143 | partNum++;
144 | break;
145 | }
146 | }, this);
147 | }
148 |
149 | Vex.Flow.Backend.MusicXML.prototype.isValid = function() { return this.valid; }
150 |
151 | Vex.Flow.Backend.MusicXML.prototype.getNumberOfMeasures = function() {
152 | return this.measures.length;
153 | }
154 |
155 | Vex.Flow.Backend.MusicXML.prototype.getMeasureNumber = function(m) {
156 | var num = this.measureNumbers[m];
157 | return isNaN(num) ? null : num;
158 | }
159 |
160 | Vex.Flow.Backend.MusicXML.prototype.getMeasure = function(m) {
161 | var measure_attrs = this.getAttributes(m, 0);
162 | var time = measure_attrs.time;
163 | var measure = new Vex.Flow.Measure({time: time});
164 | var numParts = this.measures[m].length;
165 | measure.setNumberOfParts(numParts);
166 | for (var p = 0; p < numParts; p++) {
167 | var attrs = this.getAttributes(m, p);
168 | var partOptions = {time: time};
169 | if (typeof attrs.clef == "string") partOptions.clef = attrs.clef;
170 | if (typeof attrs.key == "string") partOptions.key = attrs.key;
171 | measure.setPart(p, partOptions);
172 | var part = measure.getPart(p);
173 | part.setNumberOfStaves(this.numStaves[p]);
174 | if (attrs.clef instanceof Array)
175 | for (var s = 0; s < this.numStaves[p]; s++)
176 | part.setStave(s, {clef: attrs.clef[s]});
177 | var numVoices = 1; // can expand dynamically
178 | var noteElems = this.measures[m][p].getElementsByTagName("note");
179 | var voiceObjects = new Array(); // array of arrays
180 | var lastNote = null; // Hold on to last note in case there is a chord
181 | for (var i = 0; i < noteElems.length; i++) {
182 | // FIXME: Chord support
183 | var noteObj = this.parseNote(noteElems[i], attrs);
184 | if (noteObj.grace) continue; // grace note requires VexFlow support
185 | var voiceNum = 0;
186 | if (typeof noteObj.voice == "number") {
187 | if (noteObj.voice >=numVoices) part.setNumberOfVoices(noteObj.voice+1);
188 | voiceNum = noteObj.voice;
189 | }
190 | var voice = part.getVoice(voiceNum);
191 | if (voice.notes.length == 0 && typeof noteObj.stave == "number") {
192 | // TODO: voice spanning multiple staves (requires VexFlow support)
193 | voice.stave = noteObj.stave;
194 | }
195 | if (noteObj.chord) lastNote.keys.push(noteObj.keys[0]);
196 | else {
197 | if (lastNote) part.getVoice(lastNote.voice || 0).addNote(lastNote);
198 | lastNote = noteObj;
199 | }
200 | }
201 | if (lastNote) part.getVoice(lastNote.voice || 0).addNote(lastNote);
202 | // Voices appear to not always be consecutive from 0
203 | // Copy part and number voices correctly
204 | // FIXME: Figure out why this happens
205 | var newPart = new Vex.Flow.Measure.Part(part);
206 | var v = 0; // Correct voice number
207 | for (var i = 0; i < part.getNumberOfVoices(); i++)
208 | if (typeof part.getVoice(i) == "object"
209 | && part.getVoice(i).notes.length > 0) {
210 | newPart.setVoice(v, part.getVoice(i));
211 | v++;
212 | }
213 | newPart.setNumberOfVoices(v);
214 | measure.setPart(p, newPart);
215 | }
216 | return measure;
217 | }
218 |
219 | Vex.Flow.Backend.MusicXML.prototype.getStaveConnectors =
220 | function() { return this.staveConnectors; }
221 |
222 | Vex.Flow.Backend.MusicXML.prototype.parseAttributes =
223 | function(measureNum, partNum, attributes) {
224 | var attrs = attributes.childNodes;
225 | for (var i = 0; i < attrs.length; i++) {
226 | var attrObject = null;
227 | var attr = attrs[i];
228 | switch (attr.nodeName) {
229 | case "staves":
230 | // If this is the first measure, we use
231 | if (measureNum == 0)
232 | this.numStaves[partNum] = parseInt(attr.textContent);
233 | break;
234 | case "key":
235 | attrObject = this.fifthsToKey(parseInt(attr.getElementsByTagName(
236 | "fifths")[0].textContent));
237 | break;
238 | case "time":
239 | attrObject = (attr.getElementsByTagName("senza-misura").length > 0)
240 | ? {num_beats: 4, beat_value: 4, soft: true}
241 | : {
242 | num_beats: parseInt(attr.getElementsByTagName("beats")[0]
243 | .textContent),
244 | beat_value: parseInt(attr.getElementsByTagName(
245 | "beat-type")[0].textContent),
246 | soft: true // XXX: Should we always have soft voices?
247 | };
248 | break;
249 | case "clef":
250 | var number = parseInt(attr.getAttribute("number"));
251 | var sign = attr.getElementsByTagName("sign")[0].textContent;
252 | var line = parseInt(attr.getElementsByTagName("line")[0].textContent);
253 | var clef = (sign == "G" && line == "2") ? "treble"
254 | : (sign == "C" && line == "3") ? "alto"
255 | : (sign == "C" && line == "4") ? "tenor"
256 | : (sign == "F" && line == "4") ? "bass"
257 | : (sign == "percussion") ? "percussion"
258 | : null;
259 | if (number > 0) {
260 | if (measureNum in this.attributes
261 | && partNum in this.attributes[measureNum]
262 | && this.attributes[measureNum][partNum].clef instanceof Array)
263 | attrObject = this.attributes[measureNum][partNum].clef;
264 | else attrObject = new Array(this.numStaves[partNum]);
265 | attrObject[number - 1] = clef;
266 | }
267 | else attrObject = clef;
268 | break;
269 | case "divisions":
270 | attrObject = parseInt(attr.textContent);
271 | break;
272 | default: continue; // Don't use attribute if we don't know what it is
273 | }
274 | if (! (measureNum in this.attributes))
275 | this.attributes[measureNum] = [];
276 | if (! (partNum in this.attributes[measureNum]))
277 | this.attributes[measureNum][partNum] = {};
278 | this.attributes[measureNum][partNum][attr.nodeName] = attrObject;
279 | }
280 | return attrObject;
281 | }
282 |
283 | Vex.Flow.Backend.MusicXML.prototype.parseNote = function(noteElem, attrs) {
284 | var noteObj = {rest: false, chord: false};
285 | noteObj.tickMultiplier = new Vex.Flow.Fraction(1, 1);
286 | noteObj.tuplet = null;
287 | Array.prototype.forEach.call(noteElem.childNodes, function(elem) {
288 | switch (elem.nodeName) {
289 | case "pitch":
290 | var step = elem.getElementsByTagName("step")[0].textContent;
291 | var octave = parseInt(elem.getElementsByTagName("octave")[0]
292 | .textContent);
293 | var alter = elem.getElementsByTagName("alter")[0];
294 | if (alter)
295 | switch (parseInt(alter.textContent)) {
296 | case 1: step += "#"; break;
297 | case 2: step += "##"; break;
298 | case -1: step += "b"; break;
299 | case -2: step += "bb"; break;
300 | }
301 | noteObj.keys = [step + "/" + octave.toString()];
302 | break;
303 | case "type":
304 | var type = elem.textContent;
305 | // Look up type
306 | noteObj.duration = {
307 | maxima: "1/8", long: "1/4", breve: "1/2",
308 | whole: "1", half: "2", quarter: "4", eighth: "8", "16th": "16",
309 | "32nd": "32", "64th": "64", "128th": "128", "256th": "256",
310 | "512th": "512", "1024th": "1024"
311 | }[type];
312 | if (noteObj.rest) noteObj.duration += "r";
313 | break;
314 | case "dot": // Always follow type; noteObj.duration exists
315 | var duration = noteObj.duration, rest = duration.indexOf("r");
316 | if (noteObj.rest) duration = duration.substring(0, rest) + "dr";
317 | else duration += "d";
318 | noteObj.duration = duration;
319 | break;
320 | case "duration":
321 | var intrinsicTicks = new Vex.Flow.Fraction(Vex.Flow.RESOLUTION / 4
322 | * parseInt(elem.textContent),
323 | attrs.divisions).simplify();
324 | if (isNaN(intrinsicTicks.numerator)
325 | || isNaN(intrinsicTicks.denominator))
326 | throw new Vex.RERR("InvalidMusicXML",
327 | "Error parsing MusicXML duration");
328 | if (intrinsicTicks.denominator == 1)
329 | intrinsicTicks = intrinsicTicks.numerator;
330 | noteObj.intrinsicTicks = intrinsicTicks;
331 | // TODO: come up with duration string if we don't have a type
332 | if (! noteObj.duration) noteObj.duration = "4";
333 | break;
334 | case "time-modification":
335 | var num_notes = elem.getElementsByTagName("actual-notes")[0];
336 | var notes_occupied = elem.getElementsByTagName("normal-notes")[0];
337 | if (num_notes && notes_occupied) {
338 | num_notes = parseInt(num_notes.textContent);
339 | notes_occupied = parseInt(notes_occupied.textContent);
340 | if (! (num_notes > 0 && notes_occupied > 0)) break;
341 | noteObj.tickMultiplier = new Vex.Flow.Fraction(notes_occupied, num_notes);
342 | noteObj.tuplet = {num_notes: num_notes, notes_occupied: notes_occupied};
343 | }
344 | break;
345 | case "rest":
346 | noteObj.rest = true;
347 | var step = elem.getElementsByTagName("display-step")[0];
348 | var octave = elem.getElementsByTagName("display-octave")[0];
349 | if (step && octave)
350 | noteObj.keys = [step.textContent + "/" + octave.textContent];
351 | // FIXME: default length for rest only if length is full measure
352 | if (! noteObj.duration) noteObj.duration = "1r";
353 | break;
354 | case "grace": noteObj.grace = true; break;
355 | case "chord": noteObj.chord = true; break;
356 | case "voice":
357 | var voice = parseInt(elem.textContent);
358 | if (! isNaN(voice)) noteObj.voice = voice;
359 | break;
360 | case "staff":
361 | var stave = parseInt(elem.textContent);
362 | if (! isNaN(stave) && stave > 0) noteObj.stave = stave - 1;
363 | break;
364 | case "stem":
365 | if (elem.textContent == "up") noteObj.stem_direction = 1;
366 | else if (elem.textContent == "down") noteObj.stem_direction = -1;
367 | break;
368 | case "beam":
369 | var beam = elem.textContent;
370 | if (beam != "begin" && beam != "continue" && beam != "end") break;
371 | // "continue" overrides begin or end when there are multiple beams
372 | // TODO: support backward hook/forward hook,
373 | // partial beam between groups of notes where needed
374 | if (noteObj.beam != "continue") noteObj.beam = beam;
375 | break;
376 | case "lyric":
377 | var text = elem.getElementsByTagName("text")[0];
378 | if (text) text = text.textContent;
379 | if (text) noteObj.lyric = {text: text};
380 | break;
381 | case "notations":
382 | Array.prototype.forEach.call(elem.childNodes, function(notationElem) {
383 | switch (notationElem.nodeName) {
384 | case "tied": // start-start/stop-stop vs begin-continue-end
385 | var tie = notationElem.getAttribute("type");
386 | switch (tie) {
387 | case "start":
388 | noteObj.tie = (noteObj.tie == "end") ? "continue" : "begin";
389 | break;
390 | case "stop":
391 | noteObj.tie = (noteObj.tie == "begin") ? "continue" : "end";
392 | break;
393 | default: Vex.RERR("BadMusicXML", "Bad tie: " + tie.toString());
394 | }
395 | break;
396 | // TODO: tuplet
397 | }
398 | });
399 | break;
400 | }
401 | });
402 | // Set default rest position now that we know the stave
403 | if (noteObj.rest && ! noteObj.keys) {
404 | var clef = attrs.clef;
405 | if (clef instanceof Array) clef = clef[noteObj.stave];
406 | switch (clef) {
407 | case "bass": noteObj.keys = ["D/3"]; break;
408 | case "tenor": noteObj.keys = ["A/3"]; break;
409 | case "alto": noteObj.keys = ["C/4"]; break;
410 | case "treble": default: noteObj.keys = ["B/4"]; break;
411 | }
412 | }
413 | return noteObj;
414 | }
415 |
416 | /**
417 | * Returns complete attributes object for measure m, part p (zero-indexed)
418 | */
419 | Vex.Flow.Backend.MusicXML.prototype.getAttributes = function(m, p) {
420 | var attrs = {};
421 | // Merge with every previous attributes object in order
422 | // If value is an array, merge non-null indices only
423 | for (var i = 0; i <= m; i++) {
424 | if (! (i in this.attributes)) continue;
425 | if (! (p in this.attributes[i])) continue;
426 | var measureAttrs = this.attributes[i][p];
427 | for (key in measureAttrs) {
428 | var val = measureAttrs[key];
429 | if (val instanceof Array) {
430 | if (! (attrs[key] && attrs[key] instanceof Array))
431 | attrs[key] = [];
432 | for (var ind = 0; ind < val.length; ind++)
433 | if (typeof attrs[key][ind] == "undefined"
434 | || (typeof val[ind] != "undefined" && val[ind] != null))
435 | attrs[key][ind] = val[ind];
436 | }
437 | else attrs[key] = val;
438 | }
439 | }
440 |
441 | // Default attributes
442 | if (! attrs.time) attrs.time = {num_beats: 4, beat_value: 4, soft: true};
443 |
444 | return attrs;
445 | }
446 |
447 | /**
448 | * Converts keys as fifths (e.g. -2 for Bb) to the equivalent major key ("Bb").
449 | * @param {Number} number of fifths from -7 to 7
450 | * @return {String} string representation of key
451 | */
452 | Vex.Flow.Backend.MusicXML.prototype.fifthsToKey = function(fifths) {
453 | // Find equivalent key in Vex.Flow.keySignature.keySpecs
454 | for (var i in Vex.Flow.keySignature.keySpecs) {
455 | var spec = Vex.Flow.keySignature.keySpecs[i];
456 | if (typeof spec != "object" || ! ("acc" in spec) || ! ("num" in spec))
457 | continue;
458 | if ( (fifths < 0 && spec.acc == "b" && spec.num == Math.abs(fifths))
459 | || (fifths >= 0 && spec.acc != "b" && spec.num == fifths)) return i;
460 | }
461 | }
462 |
--------------------------------------------------------------------------------
/src/documentformatter.js:
--------------------------------------------------------------------------------
1 | /**
2 | * DocumentFormatter - format and display a Document
3 | * @author Daniel Ringwalt (ringw)
4 | */
5 |
6 | /**
7 | * Accepts document as argument and draws document in discrete blocks
8 | *
9 | * @param {Vex.Flow.Document} Document object to retrieve information from
10 | * @constructor
11 | */
12 | Vex.Flow.DocumentFormatter = function(document) {
13 | if (arguments.length > 0) this.init(document);
14 | }
15 |
16 | Vex.Flow.DocumentFormatter.prototype.init = function(document) {
17 | if (typeof document != "object")
18 | throw new Vex.RERR("ArgumentError",
19 | "new Vex.Flow.DocumentFormatter() requires Document object argument");
20 | this.document = document;
21 |
22 | // Groups of measures are contained in blocks (which could correspond to a
23 | // line or a page of music.)
24 | // Each block is intended to be drawn on a different canvas.
25 | // Blocks must be managed by the subclass.
26 | this.measuresInBlock = []; // block # -> array of measure # in block
27 | this.blockDimensions = []; // block # -> [width, height]
28 |
29 | // Stave layout managed by subclass
30 | this.vfStaves = []; // measure # -> stave # -> VexFlow stave
31 |
32 | // Minimum measure widths can be used for formatting by subclasses
33 | this.minMeasureWidths = [];
34 | // minMeasureHeights:
35 | // this.minMeasureHeights[m][0] is space above measure
36 | // this.minMeasureHeights[m][s+1] is minimum height of stave s
37 | this.minMeasureHeights = [];
38 | }
39 |
40 | /**
41 | * Vex.Flow.DocumentFormatter.prototype.getStaveX: to be defined by subclass
42 | * Params: m (measure #), s (stave #)
43 | * Returns: x (number)
44 | */
45 |
46 | /**
47 | * Calculate vertical position of stave within block
48 | * @param {Number} Measure number
49 | * @param {Number} Stave number
50 | */
51 | Vex.Flow.DocumentFormatter.prototype.getStaveY = function(m, s) {
52 | // Default behavour: calculate from stave above this one (or 0 for top stave)
53 | // (Have to make sure not to call getStave on this stave)
54 | // If s == 0 and we are in a block, use the max extra space above the
55 | // top stave on any measure in the block
56 | if (s == 0) {
57 | var extraSpace = 0;
58 | // Find block for this measure
59 | this.measuresInBlock.forEach(function(measures) {
60 | if (measures.indexOf(m) > -1) {
61 | var maxExtraSpace = 50 - (new Vex.Flow.Stave(0,0,500).getYForLine(0));
62 | measures.forEach(function(measure) {
63 | var extra = this.getMinMeasureHeight(measure)[0];
64 | if (extra > maxExtraSpace) maxExtraSpace = extra;
65 | }, this);
66 | extraSpace = maxExtraSpace;
67 | return;
68 | }
69 | }, this);
70 | return extraSpace;
71 | }
72 |
73 | var higherStave = this.getStave(m, s - 1);
74 | return higherStave.y + higherStave.getHeight();
75 | }
76 |
77 | /**
78 | * Vex.Flow.DocumentFormatter.prototype.getStaveWidth: defined in subclass
79 | * Params: m (measure #), s (stave #)
80 | * Returns: width (number) which should be less than the minimum width
81 | */
82 |
83 | /**
84 | * Create a Vex.Flow.Stave from a Vex.Flow.Measure.Stave.
85 | * @param {Vex.Flow.Measure.Stave} Original stave object
86 | * @param {Number} x position
87 | * @param {Number} y position
88 | * @param {Number} width of stave
89 | * @return {Vex.Flow.Stave} Generated stave object
90 | */
91 | Vex.Flow.DocumentFormatter.prototype.createVexflowStave = function(s, x,y,w) {
92 | var vfStave = new Vex.Flow.Stave(x, y, w);
93 | s.modifiers.forEach(function(mod) {
94 | switch (mod.type) {
95 | case "clef": vfStave.addClef(mod.clef); break;
96 | case "key": vfStave.addKeySignature(mod.key); break;
97 | case "time":
98 | var time_sig;
99 | if (typeof mod.time == "string") time_sig = mod.time;
100 | else time_sig = mod.num_beats.toString() + "/"
101 | + mod.beat_value.toString();
102 | vfStave.addTimeSignature(time_sig);
103 | break;
104 | }
105 | });
106 | if (typeof s.clef == "string") vfStave.clef = s.clef;
107 | return vfStave;
108 | }
109 |
110 | /**
111 | * Use getStaveX, getStaveY, getStaveWidth to create a Vex.Flow.Stave from
112 | * the document and store it in vfStaves.
113 | * @param {Number} Measure number
114 | * @param {Number} Stave number
115 | * @return {Vex.Flow.Stave} Stave for the measure and stave #
116 | */
117 | Vex.Flow.DocumentFormatter.prototype.getStave = function(m, s) {
118 | if (m in this.vfStaves && s in this.vfStaves[m])
119 | return this.vfStaves[m][s];
120 | if (typeof this.getStaveX != "function"
121 | || typeof this.getStaveWidth != "function")
122 | throw new Vex.RERR("MethodNotImplemented",
123 | "Document formatter must implement getStaveX, getStaveWidth");
124 | //console.log(m, this.document.getMeasure(m));
125 | var stave = this.document.getMeasure(m).getStave(s);
126 |
127 | if (! stave) return undefined;
128 | var vfStave = this.createVexflowStave(stave,
129 | this.getStaveX(m, s),
130 | this.getStaveY(m, s),
131 | this.getStaveWidth(m, s));
132 | if (! (m in this.vfStaves)) this.vfStaves[m] = [];
133 | this.vfStaves[m][s] = vfStave;
134 | return vfStave;
135 | }
136 |
137 | /**
138 | * Create a Vex.Flow.Voice from a Vex.Flow.Measure.Voice.
139 | * Each note is added to the proper Vex.Flow.Stave in staves
140 | * (spanning multiple staves in a single voice not currently supported.)
141 | * @param {Vex.Flow.Measure.Voice} Voice object
142 | * @param {Array} Vex.Flow.Staves to add the notes to
143 | * @return {Array} Vex.Flow.Voice, objects to be drawn, optional voice w/lyrics
144 | */
145 | Vex.Flow.DocumentFormatter.prototype.getVexflowVoice =function(voice, staves){
146 | var vfVoice = new Vex.Flow.Voice({num_beats: voice.time.num_beats,
147 | beat_value: voice.time.beat_value,
148 | resolution: Vex.Flow.RESOLUTION});
149 | if (voice.time.soft) vfVoice.setMode(Vex.Flow.Voice.Mode.SOFT);
150 | // TODO: support spanning multiple staves
151 | if (typeof voice.stave != "number")
152 | throw new Vex.RERR("InvalidIRError", "Voice should have stave property");
153 | vfVoice.setStave(staves[voice.stave]);
154 |
155 | var vexflowObjects = new Array();
156 | var beamedNotes = null; // array of all vfNotes in beam
157 | var tiedNote = null; // only last vFNote in tie
158 | var tupletNotes = null, tupletOpts = null;
159 | var clef = staves[voice.stave].clef;
160 | var lyricVoice = null;
161 | for (var i = 0; i < voice.notes.length; i++) {
162 | var note = voice.notes[i];
163 | var vfNote = this.getVexflowNote(voice.notes[i], {clef: clef});
164 | if (note.beam == "begin") beamedNotes = [vfNote];
165 | else if (note.beam && beamedNotes) {
166 | beamedNotes.push(vfNote);
167 | if (note.beam == "end") {
168 | vexflowObjects.push(new Vex.Flow.Beam(beamedNotes, true));
169 | beamedNotes = null;
170 | }
171 | }
172 | if (note.tie == "end" || note.tie == "continue")
173 | // TODO: Tie only the correct indices
174 | vexflowObjects.push(new Vex.Flow.StaveTie({
175 | first_note: tiedNote, last_note: vfNote
176 | }));
177 | if (note.tie == "begin" || note.tie == "continue") tiedNote = vfNote;
178 | if (note.tuplet) {
179 | if (tupletNotes) tupletNotes.push(vfNote);
180 | else {
181 | tupletNotes = [vfNote];
182 | tupletOpts = note.tuplet;
183 | }
184 | if (tupletNotes.length == tupletOpts.num_notes) {
185 | vexflowObjects.push(new Vex.Flow.Tuplet(tupletNotes, tupletOpts));
186 | tupletNotes.forEach(function(n) { vfVoice.addTickable(n) });
187 | tupletNotes = null; tupletOpts = null;
188 | }
189 | }
190 | else vfVoice.addTickable(vfNote);
191 | if (note.lyric) {
192 | if (! lyricVoice) {
193 | lyricVoice = new Vex.Flow.Voice(vfVoice.time);
194 | if (voice.time.soft) lyricVoice.setMode(Vex.Flow.Voice.Mode.SOFT);
195 | lyricVoice.setStave(vfVoice.stave);
196 | // TODO: add padding at start of voice if necessary
197 | }
198 | lyricVoice.addTickable(new Vex.Flow.TextNote({
199 | text: note.lyric.text, duration: note.duration
200 | }));
201 | }
202 | else if (lyricVoice) {
203 | // Add GhostNote for padding lyric voice
204 | lyricVoice.addTickable(new Vex.Flow.GhostNote({
205 | duration: note.duration
206 | }));
207 | }
208 | }
209 | if (typeof console != "undefined" && console.assert)
210 | console.assert(vfVoice.stave instanceof Vex.Flow.Stave,
211 | "VexFlow voice should have a stave");
212 | return [vfVoice, vexflowObjects, lyricVoice];
213 | }
214 |
215 | /**
216 | * Create a Vex.Flow.StaveNote from a Vex.Flow.Measure.Note.
217 | * @param {Vex.Flow.Measure.Note} Note object
218 | * @param {Object} Options (currently only clef)
219 | * @return {Vex.Flow.StaveNote} StaveNote object
220 | */
221 | Vex.Flow.DocumentFormatter.prototype.getVexflowNote = function(note, options) {
222 | var note_struct = Vex.Merge({}, options);
223 | note_struct.keys = note.keys;
224 | note_struct.duration = note.duration;
225 | if (note.stem_direction) note_struct.stem_direction = note.stem_direction;
226 | var vfNote = new Vex.Flow.StaveNote(note_struct);
227 | var i = 0;
228 | if (note.accidentals instanceof Array)
229 | note.accidentals.forEach(function(acc) {
230 | if (acc != null) vfNote.addAccidental(i, new Vex.Flow.Accidental(acc));
231 | i++;
232 | });
233 | var numDots = Vex.Flow.parseNoteDurationString(note.duration).dots;
234 | for (var i = 0; i < numDots; i++) vfNote.addDotToAll();
235 | return vfNote;
236 | }
237 |
238 | Vex.Flow.DocumentFormatter.prototype.getMinMeasureWidth = function(m) {
239 | if (! (m in this.minMeasureWidths)) {
240 | // Calculate the maximum extra width on any stave (due to modifiers)
241 | var maxExtraWidth = 0;
242 | var measure = this.document.getMeasure(m);
243 | var vfStaves = measure.getStaves().map(function(stave) {
244 | var vfStave = this.createVexflowStave(stave, 0, 0, 500);
245 | var extraWidth = 500 - (vfStave.getNoteEndX()-vfStave.getNoteStartX());
246 | if (extraWidth > maxExtraWidth) maxExtraWidth = extraWidth;
247 | return vfStave;
248 | }, this);
249 |
250 | // Create dummy canvas to use for formatting (required by TextNote)
251 | var canvas = document.createElement("canvas");
252 | var context = Vex.Flow.Renderer.bolsterCanvasContext(
253 | canvas.getContext("2d"));
254 |
255 | var allVfVoices = [];
256 | var startStave = 0; // stave for part to start on
257 | measure.getParts().forEach(function(part) {
258 | var numStaves = part.getNumberOfStaves();
259 | var partStaves = vfStaves.slice(startStave, startStave + numStaves);
260 | part.getVoices().forEach(function(voice) {
261 | var vfVoice = this.getVexflowVoice(voice, partStaves)[0];
262 | allVfVoices.push(vfVoice);
263 | vfVoice.tickables.forEach(function(t) {
264 | t.setContext(context)
265 | });
266 | }, this);
267 | startStave += numStaves;
268 | }, this);
269 | var formatter = new Vex.Flow.Formatter();
270 | var noteWidth = formatter.preCalculateMinTotalWidth(allVfVoices);
271 |
272 | // Find max tickables in any voice, add a minimum space between them
273 | // to get a sane min width
274 | var maxTickables = 0;
275 | allVfVoices.forEach(function(v) {
276 | var numTickables = v.tickables.length;
277 | if (numTickables > maxTickables) maxTickables = numTickables;
278 | });
279 | this.minMeasureWidths[m] = Vex.Max(50,
280 | maxExtraWidth + noteWidth + maxTickables*10 + 10);
281 |
282 | // Calculate minMeasureHeight by merging bounding boxes from each voice
283 | // and the bounding box from the stave
284 | var minHeights = [];
285 | // Initialize to zero
286 | for (var i = 0; i < vfStaves.length + 1; i++) minHeights.push(0);
287 |
288 | var i=-1; // allVfVoices consecutive by stave, increment for each new stave
289 | var lastStave = null;
290 | var staveY = vfStaves[0].getYForLine(0);
291 | var staveH = vfStaves[0].getYForLine(4) - staveY;
292 | var lastBoundingBox = null;
293 | allVfVoices.forEach(function(v) {
294 | if (v.stave !== lastStave) {
295 | if (i >= 0) {
296 | minHeights[i] += -lastBoundingBox.getY();
297 | minHeights[i+1] = lastBoundingBox.getH()
298 | +lastBoundingBox.getY();
299 | }
300 | lastBoundingBox = new Vex.Flow.BoundingBox(0, staveY, 500, staveH);
301 | lastStave = v.stave;
302 | i++;
303 | }
304 | lastBoundingBox.mergeWith(v.getBoundingBox());
305 | });
306 | minHeights[i] += -lastBoundingBox.getY();
307 | minHeights[i+1] = lastBoundingBox.getH()
308 | +lastBoundingBox.getY();
309 | this.minMeasureHeights[m] = minHeights;
310 | }
311 | return this.minMeasureWidths[m];
312 | };
313 |
314 | Vex.Flow.DocumentFormatter.prototype.getMinMeasureHeight = function(m) {
315 | if (! (m in this.minMeasureHeights)) this.getMinMeasureWidth(m);
316 | return this.minMeasureHeights[m];
317 | }
318 |
319 | // Internal drawing functions
320 | Vex.Flow.DocumentFormatter.prototype.drawPart =
321 | function(part, vfStaves, context) {
322 | var staves = part.getStaves();
323 | var voices = part.getVoices();
324 |
325 | vfStaves.forEach(function(stave) { stave.setContext(context).draw(); });
326 |
327 | var allVfObjects = new Array();
328 | var vfVoices = new Array();
329 | voices.forEach(function(voice) {
330 | var result = this.getVexflowVoice(voice, vfStaves);
331 | Array.prototype.push.apply(allVfObjects, result[1]);
332 | var vfVoice = result[0];
333 | var lyricVoice = result[2];
334 | vfVoice.tickables.forEach(function(tickable) {
335 | tickable.setStave(vfVoice.stave); });
336 | vfVoices.push(vfVoice);
337 | if (lyricVoice) {
338 | lyricVoice.tickables.forEach(function(tickable) {
339 | tickable.setStave(lyricVoice.stave); });
340 | vfVoices.push(lyricVoice);
341 | }
342 | }, this);
343 | var formatter = new Vex.Flow.Formatter().joinVoices(vfVoices);
344 | formatter.format(vfVoices, vfStaves[0].getNoteEndX()
345 | - vfStaves[0].getNoteStartX() - 10);
346 | var i = 0;
347 | vfVoices.forEach(function(vfVoice) {
348 | vfVoice.draw(context, vfVoice.stave); });
349 | allVfObjects.forEach(function(obj) {
350 | obj.setContext(context).draw(); });
351 | }
352 |
353 | // Options contains system_start, system_end for measure
354 | Vex.Flow.DocumentFormatter.prototype.drawMeasure =
355 | function(measure, vfStaves, context, options) {
356 | var startStave = 0;
357 | var parts = measure.getParts();
358 | parts.forEach(function(part) {
359 | var numStaves = part.getNumberOfStaves();
360 | var partStaves = vfStaves.slice(startStave, startStave + numStaves);
361 | this.drawPart(part, partStaves, context);
362 | startStave += numStaves;
363 | }, this);
364 |
365 | this.document.getStaveConnectors().forEach(function(connector) {
366 | if (! ((options.system_start && connector.system_start)
367 | || (options.system_end && connector.system_end)
368 | || connector.measure_start)) return;
369 | var firstPart = connector.parts[0],
370 | lastPart = connector.parts[connector.parts.length - 1];
371 | var firstStave, lastStave;
372 | // Go through each part in measure to find the stave index
373 | var staveNum = 0, partNum = 0;
374 | parts.forEach(function(part) {
375 | if (partNum == firstPart) firstStave = staveNum;
376 | if (partNum == lastPart)
377 | lastStave = staveNum + part.getNumberOfStaves() - 1;
378 | staveNum += part.getNumberOfStaves();
379 | partNum++;
380 | });
381 | if (isNaN(firstStave) || isNaN(lastStave)) return;
382 | var type = connector.type == "single" ? Vex.Flow.StaveConnector.type.SINGLE
383 | : connector.type == "double" ? Vex.Flow.StaveConnector.type.DOUBLE
384 | : connector.type == "brace" ? Vex.Flow.StaveConnector.type.BRACE
385 | : connector.type =="bracket"? Vex.Flow.StaveConnector.type.BRACKET
386 | : null;
387 | if ((options.system_start && connector.system_start)
388 | || connector.measure_start) {
389 | (new Vex.Flow.StaveConnector(vfStaves[firstStave], vfStaves[lastStave])
390 | ).setType(type).setContext(context).draw();
391 | }
392 | if (options.system_end && connector.system_end) {
393 | var stave1 = vfStaves[firstStave], stave2 = vfStaves[lastStave];
394 | var dummy1 = new Vex.Flow.Stave(stave1.x + stave1.width,
395 | stave1.y, 100);
396 | var dummy2 = new Vex.Flow.Stave(stave2.x + stave2.width,
397 | stave2.y, 100);
398 | (new Vex.Flow.StaveConnector(dummy1, dummy2)
399 | ).setType(type).setContext(context).draw();
400 | }
401 | });
402 | }
403 |
404 | Vex.Flow.DocumentFormatter.prototype.drawBlock = function(b, context) {
405 | this.getBlock(b);
406 | var measures = this.measuresInBlock[b];
407 |
408 | measures.forEach(function(m) {
409 | var stave = 0;
410 | while (this.getStave(m, stave)) stave++;
411 |
412 | this.drawMeasure(this.document.getMeasure(m), this.vfStaves[m], context,
413 | {system_start: m == measures[0],
414 | system_end: m == measures[measures.length - 1]});
415 | }, this);
416 | }
417 |
418 | /**
419 | * Vex.Flow.DocumentFormatter.prototype.draw - defined in subclass
420 | * Render document inside HTML element, creating canvases, etc.
421 | * Called a second time to update as necessary if the width of the element
422 | * changes, etc.
423 | * @param {Node} HTML node to draw inside
424 | * @param {Object} Subclass-specific options
425 | */
426 |
427 | /**
428 | * Vex.Flow.DocumentFormatter.Liquid - default liquid formatter
429 | * Fit measures onto lines with a given width, in blocks of 1 line of music
430 | *
431 | * @constructor
432 | */
433 | Vex.Flow.DocumentFormatter.Liquid = function(document) {
434 | if (arguments.length > 0) Vex.Flow.DocumentFormatter.call(this, document);
435 | this.width = 500; // default value
436 | this.zoom = 0.8;
437 | this.scale = 1.0;
438 | if (typeof window.devicePixelRatio == "number"
439 | && window.devicePixelRatio > 1)
440 | this.scale = Math.floor(window.devicePixelRatio);
441 | }
442 | Vex.Flow.DocumentFormatter.Liquid.prototype = new Vex.Flow.DocumentFormatter();
443 | Vex.Flow.DocumentFormatter.Liquid.constructor
444 | = Vex.Flow.DocumentFormatter.Liquid;
445 |
446 | Vex.Flow.DocumentFormatter.Liquid.prototype.setWidth = function(width) {
447 | this.width = width; return this; }
448 |
449 | Vex.Flow.DocumentFormatter.Liquid.prototype.getBlock = function(b) {
450 | if (b in this.blockDimensions) return this.blockDimensions[b];
451 |
452 | var startMeasure = 0;
453 | if (b > 0) {
454 | this.getBlock(b - 1);
455 | var prevMeasures = this.measuresInBlock[b - 1];
456 | startMeasure = prevMeasures[prevMeasures.length - 1] + 1;
457 | }
458 | var numMeasures = this.document.getNumberOfMeasures();
459 | if (startMeasure >= numMeasures) return null;
460 |
461 | // Update modifiers for first measure
462 | this.document.getMeasure(startMeasure).getStaves().forEach(function(s) {
463 | console.log(s);
464 |
465 | if (typeof s.clef == "string" && ! s.getModifier("clef")) {
466 | s.addModifier({type: "clef", clef: s.clef, automatic: true});
467 | }
468 | if (typeof s.key == "string" && ! s.getModifier("key")) {
469 | s.addModifier({type: "key", key: s.key, automatic: true});
470 | }
471 |
472 | // Time signature on first measure of piece only
473 | if (startMeasure == 0 && ! s.getModifier("time")) {
474 | if (typeof s.time_signature == "string") {
475 | //console.log(s);
476 | s.addModifier({type: "time", time: s.time_signature,automatic:true});
477 | }
478 | //else if (typeof s.time == "object" && ! s.time.soft)
479 | else if (typeof s.time == "object")
480 | s.addModifier(Vex.Merge({type: "time", automatic: true}, s.time));
481 | }
482 | });
483 |
484 | // Store x, width of staves (y calculated automatically)
485 | if (! this.measureX) this.measureX = new Array();
486 | if (! this.measureWidth) this.measureWidth = new Array();
487 |
488 | // Calculate start x (15 if there are braces, 10 otherwise)
489 | var start_x = 10;
490 | this.document.getMeasure(startMeasure).getParts().forEach(function(part) {
491 | if (part.showsBrace()) start_x = 15;
492 | });
493 |
494 | if (this.getMinMeasureWidth(startMeasure) + start_x + 10 >= this.width) {
495 | // Use only this measure and the minimum possible width
496 | var block = [this.getMinMeasureWidth(startMeasure) + start_x + 10, 0];
497 | this.blockDimensions[b] = block;
498 | this.measuresInBlock[b] = [startMeasure];
499 | this.measureX[startMeasure] = start_x;
500 | this.measureWidth[startMeasure] = block[0] - start_x - 10;
501 | }
502 | else {
503 | var curMeasure = startMeasure;
504 | var width = start_x + 10;
505 | while (width < this.width && curMeasure < numMeasures) {
506 | // Except for first measure, remove automatic modifiers
507 | // If there were any, invalidate the measure width
508 | if (curMeasure != startMeasure)
509 | this.document.getMeasure(curMeasure).getStaves().forEach(function(s) {
510 | if (s.deleteAutomaticModifiers()
511 | && this.minMeasureWidths && curMeasure in this.minMeasureWidths)
512 | delete this.minMeasureWidths[curMeasure];
513 | });
514 | width += this.getMinMeasureWidth(curMeasure);
515 | curMeasure++;
516 | }
517 | var endMeasure = curMeasure - 1;
518 | var measureRange = [];
519 | for (var m = startMeasure; m <= endMeasure; m++) measureRange.push(m);
520 | this.measuresInBlock[b] = measureRange;
521 |
522 | // Allocate width to measures
523 | var remainingWidth = this.width - start_x - 10;
524 | for (var m = startMeasure; m <= endMeasure; m++) {
525 | // Set each width to the minimum
526 | this.measureWidth[m] = Math.ceil(this.getMinMeasureWidth(m));
527 | remainingWidth -= this.measureWidth[m];
528 | }
529 | // Split rest of width evenly
530 | var extraWidth = Math.floor(remainingWidth / (endMeasure-startMeasure+1));
531 | for (var m = startMeasure; m <= endMeasure; m++)
532 | this.measureWidth[m] += extraWidth;
533 | remainingWidth -= extraWidth * (endMeasure - startMeasure + 1);
534 | this.measureWidth[startMeasure] += remainingWidth; // Add remainder
535 | // Calculate x value for each measure
536 | this.measureX[startMeasure] = start_x;
537 | for (var m = startMeasure + 1; m <= endMeasure; m++)
538 | this.measureX[m] = this.measureX[m-1] + this.measureWidth[m-1];
539 | this.blockDimensions[b] = [this.width, 0];
540 | }
541 |
542 | // Calculate height of first measure
543 | var i = 0;
544 | var lastStave = undefined;
545 | var stave = this.getStave(startMeasure, 0);
546 | while (stave) {
547 | lastStave = stave;
548 | i++;
549 | stave = this.getStave(startMeasure, i);
550 | }
551 | var height = this.getStaveY(startMeasure, i-1);
552 | // Add max extra space for last stave on any measure in this block
553 | var maxExtraHeight = 90; // default: height of stave
554 | for (var i = startMeasure; i <= endMeasure; i++) {
555 | var minHeights = this.getMinMeasureHeight(i);
556 | var extraHeight = minHeights[minHeights.length - 1];
557 | if (extraHeight > maxExtraHeight) maxExtraHeight = extraHeight;
558 | }
559 | height += maxExtraHeight;
560 | this.blockDimensions[b][1] = height;
561 |
562 | return this.blockDimensions[b];
563 | }
564 |
565 | Vex.Flow.DocumentFormatter.Liquid.prototype.getStaveX = function(m, s) {
566 | if (! (m in this.measureX))
567 | throw new Vex.RERR("FormattingError",
568 | "Creating stave for measure which does not belong to a block");
569 | return this.measureX[m];
570 | }
571 |
572 | Vex.Flow.DocumentFormatter.Liquid.prototype.getStaveWidth = function(m, s) {
573 | if (! (m in this.measureWidth))
574 | throw new Vex.RERR("FormattingError",
575 | "Creating stave for measure which does not belong to a block");
576 | return this.measureWidth[m];
577 | }
578 |
579 | Vex.Flow.DocumentFormatter.Liquid.prototype.draw = function(elem, options) {
580 | if (this._htmlElem != elem) {
581 | this._htmlElem = elem;
582 | elem.innerHTML = "";
583 | this.canvases = [];
584 | }
585 |
586 | //var canvasWidth = $(elem).width() - 10; // TODO: remove jQuery dependency
587 | var canvasWidth = elem.offsetWidth - 10;
588 |
589 | var renderWidth = Math.floor(canvasWidth / this.zoom);
590 |
591 | // Invalidate all blocks/staves/voices
592 | this.minMeasureWidths = []; // heights don't change with stave modifiers
593 | this.measuresInBlock = [];
594 | this.blockDimensions = [];
595 | this.vfStaves = [];
596 | this.measureX = [];
597 | this.measureWidth = [];
598 | this.setWidth(renderWidth);
599 |
600 | // Remove all non-canvas child nodes of elem using jQuery
601 | $(elem).children(":not(canvas)").remove();
602 |
603 | var b = 0;
604 | while (this.getBlock(b)) {
605 | var canvas, context;
606 | var dims = this.blockDimensions[b];
607 | var width = Math.ceil(dims[0] * this.zoom);
608 | var height = Math.ceil(dims[1] * this.zoom);
609 |
610 | if (! this.canvases[b]) {
611 | canvas = document.createElement('canvas');
612 | canvas.width = width * this.scale;
613 | canvas.height = height * this.scale;
614 | if (this.scale > 1) {
615 | canvas.style.width = width.toString() + "px";
616 | canvas.style.height = height.toString() + "px";
617 | }
618 | canvas.id = elem.id + "_canvas" + b.toString();
619 | // If a canvas exists after this one, insert before that canvas
620 | for (var a = b + 1; this.getBlock(a); a++)
621 | if (typeof this.canvases[a] == "object") {
622 | elem.insertBefore(canvas, this.canvases[a]);
623 | break;
624 | }
625 | if (! canvas.parentNode)
626 | elem.appendChild(canvas); // Insert at the end of elem
627 | this.canvases[b] = canvas;
628 | context = Vex.Flow.Renderer.bolsterCanvasContext(canvas.getContext("2d"));
629 | }
630 | else {
631 | canvas = this.canvases[b];
632 | canvas.style.display = "inherit";
633 | canvas.width = width * this.scale;
634 | canvas.height = height * this.scale;
635 | if (this.scale > 1) {
636 | canvas.style.width = width.toString() + "px";
637 | canvas.style.height = height.toString() + "px";
638 | }
639 | context = Vex.Flow.Renderer.bolsterCanvasContext(canvas.getContext("2d"));
640 | context.clearRect(0, 0, canvas.width, canvas.height);
641 | }
642 | // TODO: Figure out why setFont method is called
643 | if (typeof context.setFont != "function") {
644 | context.setFont = function(font) { this.font = font; return this; };
645 | }
646 | context.scale(this.zoom * this.scale, this.zoom * this.scale);
647 |
648 | this.drawBlock(b, context);
649 | // Add anchor elements before canvas
650 | var lineAnchor = document.createElement("a");
651 | lineAnchor.id = elem.id + "_line" + (b+1).toString();
652 | elem.insertBefore(lineAnchor, canvas);
653 | this.measuresInBlock[b].forEach(function(m) {
654 | var anchor = elem.id + "_m" +
655 | this.document.getMeasureNumber(m).toString();
656 | var anchorElem = document.createElement("a");
657 | anchorElem.id = anchor;
658 | elem.insertBefore(anchorElem, canvas);
659 | }, this);
660 | b++;
661 | }
662 | while (typeof this.canvases[b] == "object") {
663 | // Remove canvases beyond the last one we are using
664 | elem.removeChild(this.canvases[b]);
665 | delete this.canvases[b];
666 | b++;
667 | }
668 | }
669 |
--------------------------------------------------------------------------------
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