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mei-player.xhtml
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mei-player.xhtml
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---
layout: viewer
title: Verovio MEI Viewer
active: mei-viewer
midiplayer: false
downloads:
- name: "Chopin op.10/9"
description: "Etude, 3 pages - 400Kb"
link: "Chopin_Etude_op.10_no.9.mei"
audio: "Guiomar_Novaes_Etude_Op_10_No_9_in_F_minor_Chopin"
---
<script type="text/javascript">
//<![CDATA[
var vrvToolkit = new verovio.toolkit();
var page = 1;
var zoom = 40;
var pageHeight = 2970;
var pageWidth = 2100;
var spacingSystem = 2;
var swipe_pages = false;
var log = false;
var format = 'mei';
var outputFilename = 'output.mei'
var syncData = [];
var audioClock;
var audioIndex;
var ids = [];
// reload cookies
if ( $.cookie('zoom') ) zoom = $.cookie('zoom');
//console.log(zoom);
function set_options( ) {
pageHeight = ($(document).height() - $( "#navbar" ).height() - 4) * 100 / zoom ;
pageWidth = ($(document).width()) * 100 / zoom ; // - $( "#sidbar" ).width();
options = {
adjustPageHeight: true,
breaks: "auto",
inputFormat: format,
pageHeight: pageHeight,
pageWidth: pageWidth,
footer: "none",
scale: zoom,
spacingSystem: spacingSystem
};
//console.log( options );
vrvToolkit.setOptions( options );
}
function load_data(data) {
set_options();
// console.time("loading");
try {
vrvToolkit.loadData(data);
// Also render to midi for sync
var base64midi = vrvToolkit.renderToMIDI();
if (log) {
str = vrvToolkit.getLog();
$("#log_p").html( str.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"').replace(/\n/g, "<br/>") );
}
$("#total_text").html(vrvToolkit.getPageCount());
page = 1;
load_page();
$("#play-button").show();
}
catch(err) {
$("#overlay").hide().css("cursor", "auto");
$('#err').html(err);
$('#errorDialog').modal();
}
// console.timeEnd("loading");
}
function load_page() {
$("#overlay").hide().css("cursor", "auto");
$("#jump_text").val(page);
svg = vrvToolkit.renderToSVG(page, {});
$("#svg_output").html(svg);
adjust_page_height();
};
function next_page() {
if (page >= vrvToolkit.getPageCount()) {
return;
}
page = page + 1;
load_page();
};
function prev_page() {
if (page <= 1) {
return;
}
page = page - 1;
load_page();
};
function first_page() {
page = 1;
load_page();
};
function last_page() {
page = vrvToolkit.getPageCount();
load_page();
};
function apply_zoom() {
$.cookie('zoom', zoom, { expires: 30 });
set_options();
var measure = 0;
if (page != 1) {
measure = $("#svg_output .measure").attr("id");
}
vrvToolkit.redoLayout();
$("#total_text").html(vrvToolkit.getPageCount());
page = 1;
if (measure != 0) {
page = vrvToolkit.getPageWithElement(measure);
}
load_page();
}
function zoom_out() {
if (zoom < 20) {
return;
}
zoom = zoom / 2;
apply_zoom();
}
function zoom_in() {
if (zoom > 80) {
return;
}
zoom = zoom * 2;
apply_zoom();
}
function do_page_enter(e) {
key = e.keyCode || e.which;
if (key == 13) {
text = $("#jump_text").val();
if (text <= vrvToolkit.getPageCount() && text > 0) {
page = Number(text);
load_page();
} else {
$("#jump_text").val(page);
}
}
}
function do_zoom_enter(e) {
key = e.keyCode || e.which;
if (key == 13) {
text = $("#zoom_text").val();
zoom_val = Number(text.replace("%", ""));
if (zoom_val < 10) zoom_val = 10;
else if (zoom_val > 160) zoom_val = 160;
zoom = zoom_val;
apply_zoom();
}
}
function adjust_page_height() {
// adjust the height of the panel
if ( $('#svg_panel svg') ) {
zoomed_height = pageHeight * zoom / 100;
if ( zoomed_height < $('#svg_panel svg').height() ) {
zoomed_height = $('#svg_panel svg').height();
}
$('#svg_output').height( zoomed_height ); // slighly more for making sure we have no scroll bar
//$('#svg_panel svg').height(pageHeight * zoom / 100 );
//$('#svg_panel svg').width(pageWidth * zoom / 100 );
}
// also update the zoom control
$("#zoom_text").val(zoom + "%");
// enable the swipe (or not)
enable_swipe( ( $('#svg_panel svg') && ( $('#svg_panel svg').width() <= $('#svg_panel').width() ) ) );
}
function swipe_prev(event, direction, distance, duration, fingerCount) {
prev_page();
}
function swipe_next(event, direction, distance, duration, fingerCount) {
next_page();
}
function swipe_zoom_in(event, target) {
zoom_in();
}
function swipe_zoom_out(event, target) {
zoom_out();
}
function enable_swipe( pages ) {
if ( pages && !swipe_pages ) {
$("#svg_output").swipe( "destroy" );
$("#svg_output").swipe( { swipeLeft: swipe_next, swipeRight: swipe_prev, tap: swipe_zoom_in, doubleTap: swipe_zoom_out, allowPageScroll:"auto"} );
swipe_pages = true;
}
// zoom only
else if ( !pages && swipe_pages ) {
$("#svg_output").swipe( "destroy" );
$("#svg_output").swipe( { tap: swipe_zoom_in, doubleTap: swipe_zoom_out, allowPageScroll:"auto"} );
swipe_pages = false;
}
}
function getParameterByName(name) {
var match = RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
}
function play_midi() {
var base64midi = vrvToolkit.renderToMIDI();
var song = 'data:audio/midi;base64,' + base64midi;
$("#player").show();
$("#play-button").hide();
$("#player").midiPlayer.play(song);
}
var midiUpdate = function(time) {
var vrvTime = Math.max(0, time);
var elementsattime = vrvToolkit.getElementsAtTime(vrvTime);
if (elementsattime.page > 0) {
if (elementsattime.page != page) {
page = elementsattime.page;
load_page();
}
if ((elementsattime.notes.length > 0) && (ids != elementsattime.notes)) {
ids.forEach(function(noteid) {
if ($.inArray(noteid, elementsattime.notes) == -1) {
$("#" + noteid ).attr("fill", "#000");
$("#" + noteid ).attr("stroke", "#000");
//$("#" + noteid ).removeClassSVG("highlighted");
}
});
ids = elementsattime.notes;
ids.forEach(function(noteid) {
if ($.inArray(noteid, elementsattime.notes) != -1) {
//console.log(noteid);
$("#" + noteid ).attr("fill", "#c00");
$("#" + noteid ).attr("stroke", "#c00");;
//$("#" + noteid ).addClassSVG("highlighted");
}
});
}
}
}
function onAudioUpdate() {
//console.log($("#audioPlayer").currentTime);
var currentTime = document.getElementById("audioPlayer").currentTime * 1000;
var i = audioIndex;
var frame = currentTime / 1024 * 44100;
for (i = audioIndex; i < syncData.dataset.point.length; i++) {
if (syncData.dataset.point[i].mapframe > frame) {
break;
}
}
audioIndex = i;
var mapSyncTime = syncData.dataset.point[i].mapframe * 1024 / 44100;
var syncTime = syncData.dataset.point[i].frame * 1024 / 44100;
syncTime = Math.floor((syncTime + currentTime - mapSyncTime) / 10);
syncTime = syncTime * 10;
// console.log(syncTime); //, currentTime);
midiUpdate(syncTime);
}
$.fn.addClassSVG = function(className){
$(this).attr('class', function(index, existingClassNames) {
return existingClassNames + ' ' + className;
});
return this;
};
$.fn.removeClassSVG = function(className){
$(this).attr('class', function(index, existingClassNames) {
//var re = new RegExp(className, 'g');
//return existingClassNames.replace(re, '');
});
return this;
};
//]]>
</script>
<!-- modal -->
<div class="modal fade" id="errorDialog" tabindex="-1" role="dialog">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true" class="glyphicon glyphicon-remove"> </span></button>
<h4 class="modal-title" id="myModalLabel">Error</h4>
</div>
<div class="modal-body">
<div class="alert alert-danger" role="alert">Sorry, Verovio failed to process the MEI data</div>
<p>
<button class="btn btn-primary" type="button" data-toggle="collapse" data-target="#errDiv" aria-expanded="false" aria-controls="errDiv">Show the error log</button>
</p>
<div class="collapse" id="errDiv">
<pre id="err"></pre>
</div>
</div>
</div>
</div>
</div>
<!-- top navbar -->
<div id="navbar" class="navbar navbar-default navbar-with-sidebar">
<button type="button" class="navbar-toggle sidebar-toggle" data-toggle="offcanvas" data-target=".sidebar-nav">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<div class="btn-group">
<audio id="audioPlayer" controls="controls">
<source type="audio/mpeg" style="width:90%; height:10px;"/>
Your browser does not support the HTML5 audio element.
</audio>
</div>
<button type="button" id="mei_download" class="navbar-toggle menu-download" style="display: none;">
<span class="glyphicon glyphicon-download"></span><span> MEI</span>
</button>
<a class="navbar-brand logo-nav" href="{{ site.baseurl }}/index.xhtml">
<img alt="Verovio logo" src="{{ site.baseurl }}/images/verovio-fadded-50.png" />
</a>
<div style="clear: both;"></div>
<hr/>
</div>
<div id="svg_panel" style="background-color: #fff;">
<div id="player" style="z-index: 20; position: absolute; display: none;"></div>
<div id="svg_output" style="overflow:hidden;" />
</div>
<!-- sidebar -->
<div class="sidebar-offcanvas" id="sidebar" role="navigation">
<div class="sidebar-panel">
<div class="row">
<div class="col-xs-12">
<h4>Navigation</h4>
</div>
</div>
<div class="row sidebar-row">
<div class="col-xs-12">
<button class="btn btn-default btn-sm pull-left popover-btn" type="button" data-container="body" data-toggle="popover" data-placement="left" data-content="On mobile devices, you can swipe left or right to change page and tap or double tap to zoom-in or zoom-out. On desktops, you can use [ctrl+] left or right arrows and +/- keys.">
<span class="glyphicon glyphicon-question-sign"/>
</button>
</div>
</div>
<div class="row sidebar-row">
<div class="col-md-12">
<p>
Go to page [1-<span id="total_text">1</span>]:
</p>
<div class="input-group input-group-sm" style="width: 20px;">
<span class="input-group-btn">
<button onclick="first_page()" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-fast-backward"/>
</button>
<button onclick="prev_page()" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-backward"/>
</button>
</span>
<input type="text" class="form-control" placeholder="0" id="jump_text" style="width: 45px !important;" onkeypress="do_page_enter(event)"/>
<span class="input-group-btn">
<button onclick="next_page()" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-forward"/>
</button>
<button onclick="last_page()" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-fast-forward"/>
</button>
</span>
</div>
<p></p>
<p><em>(Swipe or click left- or right-key to change screen)</em></p>
<!-- /input-group -->
</div>
<!-- /.col-lg-6 -->
</div>
<div class="row sidebar-row">
<div class="col-md-6">
<p>
Zoom:
</p>
<div class="input-group input-group-sm" style="width: 20px;">
<span class="input-group-btn">
<button onclick="zoom_out()" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-zoom-out"/>
</button>
</span>
<input type="text" class="form-control" style="width:60px !important;" placeholder="100%" id="zoom_text" onkeypress="do_zoom_enter(event)"/>
<span class="input-group-btn">
<button onclick="zoom_in()" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-zoom-in"/>
</button>
</span>
</div>
<!-- /input-group -->
</div>
<!-- /.col-md-6 -->
</div>
</div>
<div class="sidebar-panel">
<div class="row">
<div class="col-xs-12">
<h4>Examples</h4>
</div>
</div>
<div id="downloads_panel_body">
<div class="row">
<div class="col-md-12">
{% for d in page.downloads %}
<div {% if d.hidden == true %}class="hidden-sm hidden-xs"{% endif %}>
<p>
<a href="{{ site.baseurl }}/{{ page.name }}?file=examples/downloads/{{ d.link }}&audio=examples/player/{{ d.audio }}">{{ d.name }}</a><br/>
{{ d.description }}
</p>
</div>
{% endfor %}
</div>
<!-- /.col-md-6 -->
</div>
<!-- /.row -->
</div>
</div>
<div class="sidebar-panel">
<p>This viewer uses the latest development version <a href="" id="version">[version]</a> and might be unstable.</p>
</div>
</div>
<script type="text/javascript">
//<![CDATA[
$( document ).ready(function() {
var version = vrvToolkit.getVersion();
var n = version.lastIndexOf('-');
var commit = version.substring(n + 1);
$('#version').text( version );
$("#version").attr( "href", "http://github.com/rism-digital/verovio/commit/" + commit ) ;
$(window).keyup(function(event){
// We need to make sure not to capture event on text fields
if ( $(event.target).hasClass('form-control') ) {
return;
}
if ( event.ctrlKey && (event.keyCode == 37) ) {
first_page();
}
else if ( event.keyCode == 37 ) {
prev_page();
}
else if ( event.ctrlKey && (event.keyCode == 39) ) {
last_page();
}
else if ( event.keyCode == 39 ) {
next_page();
}
else if ( event.keyCode == 107 ) {
zoom_in();
}
else if ( event.keyCode == 109 ) {
zoom_out();
}
});
$(window).resize(function(){
apply_zoom();
});
$( "#toggle_log" ).click(function() {
log = !log;
$( "#log_panel_body" ).toggle();
// toggle icon
$("span", this).toggleClass("glyphicon-chevron-down glyphicon-chevron-left");
});
$( "#mei_download" ).click(function() {
outputFilename = outputFilename.replace(/\.[^\.]+$/, '.mei');
saveAs(new Blob([vrvToolkit.getMEI(-1, true)], {type: "text/xml;charset=utf-8"}), outputFilename);
});
// Set the popover for the btn
$( ".popover-btn" ).popover( );
// Adjust the size of the svg_output and the zoom according to the div (screen) size
width = $('#svg_panel').width();
zoom = Math.min( Math.floor( 100 * width / 2100 ), zoom );
//$("#svg_output").height( zoom * 30 ); // slighly more for making sure we have no scroll bar (3000 for default height of 2970)
// Init the swipe
enable_swipe( true );
// Load the default file or the file passed in the URL
var file = getParameterByName("file");
var audio = getParameterByName("audio");
if (!file || (file.length == 0)) {
file = "examples/downloads/Chopin_Etude_op.10_no.9.mei";
//audio = "examples/player/Guiomar_Novaes_Etude_Op_10_No_9_in_F_minor_Chopin";
audio = "examples/player/IMSLP71472-PMLP01969-etude09";
}
//get JSON and assign response to var json and log data
$.getJSON( audio + ".json", function(data){
syncData = data; // console.log(data);
}, 'json');
$("#overlay").show();
$.ajax({
url: file
, dataType: "text"
, success: function(data) {
outputFilename = file.replace(/^.*[\\\/]/, '')
load_data( data );
}
});
$("#audioPlayer").attr("src", audio + ".mp3");
$("#audioPlayer").bind("timeupdate", onAudioUpdate);
$("#audioPlayer").bind("play", function(){
audioIndex = 0;
audioClock = setInterval(function(){
onAudioUpdate();
}, 50);
});
$("#audioPlayer").bind("pause", function(){
clearInterval(audioClock);
});
});
//]]>
</script>