Dance.js is dancing based on data. It's much like Backbone.js, but with a foundation for building interactive visualizations in the spirit of D3.js. It comes with Data.js, a uniform interface for handling your domain data.
Dance.js - The Barchart Dance
body { | |
font: 15px 'Helvetica Neue' Arial | |
} | |
#canvas { | |
margin-top: 20px; | |
width: 550px; | |
height: 350px; | |
background: #eee; | |
position: relative; | |
border-right: 60px solid #EEE;; | |
} | |
.bar { | |
-moz-transition-duration: 0.8s; | |
-webkit-transition-duration: 0.8s; | |
transition-duration: 0.8s; | |
position: absolute; | |
bottom: 0px; | |
background: steelblue; | |
opacity: 0.7; | |
} | |
.bar:hover { opacity: 1.0; } | |
.bar .label { | |
text-transform: uppercase; | |
position: absolute; | |
bottom: -25px; | |
left: 0; | |
right: 0; | |
text-align: center; | |
} | |
.bar .value { | |
font-weight: bold; | |
text-transform: uppercase; | |
position: absolute; | |
top: -25px; | |
left: 0; | |
right: 0; | |
text-align: center; | |
} |
(function(exports) { | |
// Collections you wanna dance with | |
// ------------ | |
function htmlId(obj) { | |
return obj._id.split('/').join('_'); | |
} | |
// console.log(htmlId("/tpye/foo")); | |
var collections = { | |
"items": { | |
enter: function(items) { | |
items.each(function(item) { | |
var bar = $('<div class="bar" id="'+htmlId(item)+'"><div class="label">'+item._id+'</div><div class="value">'+item.pos.dy+'</div></div>') | |
.css('left', item.pos.x) | |
.css('bottom', 0) | |
.css('width', item.pos.dx) | |
.css('height', 0); | |
$('#canvas').append(bar); | |
}); | |
// Delegate to update (motion tweening fun) | |
_.delay(this.collections["items"].update, 200, items); | |
}, | |
update: function(items) { | |
items.each(function(item) { | |
var cell = $('#'+htmlId(item)) | |
.css('left', item.pos.x) | |
.css('width', item.pos.dx) | |
.css('height', item.pos.dy) | |
.find('.value').html(item.pos.dy) | |
}); | |
}, | |
exit: function(items) { | |
items.each(function(i) { $('#'+htmlId(i)).remove() }); | |
} | |
} | |
}; | |
// Barchart Visualization | |
// ------------ | |
var Barchart = Dance.Performer.extend({ | |
collections: collections, | |
initialize: function(options) { | |
this.data["items"] = options.items; | |
}, | |
layout: function(property) { | |
var margin = 50; | |
this.data["items"].each(function(item, key, index) { | |
item.pos = { | |
x: margin+index*50, | |
dx: 40, | |
dy: item.get(property) | |
}; | |
}); | |
}, | |
update: function(items, property) { | |
this.data["items"] = items; | |
this.layout(property); | |
this.refresh(); | |
} | |
}); | |
exports.Barchart = Barchart; | |
})(window); |
window.countries_data = { | |
"type": { | |
"_id": "/type/country", | |
"name": "Countries", | |
"properties": { | |
"name": {"name": "Country Name", "type": "string" }, | |
"languages": {"name": "Languages spoken", "type": "string" }, | |
"population": { "name": "Population", "type": "number" }, | |
"gdp": { "name": "GDP per capita", "type": "number" } | |
}, | |
"indexes": { | |
"by_name": ["name"] | |
} | |
}, | |
"objects": [ | |
{ | |
"_id": "at", | |
"name": "Austria", | |
"languages": ["German", "Austrian"], | |
"population": 8.3, | |
"gdp": 41.805 | |
}, | |
{ | |
"_id": "de", | |
"name": "Germany", | |
"languages": ["German"], | |
"population": 82, | |
"gdp": 46.860 | |
}, | |
{ | |
"_id": "us", | |
"name": "United States of America", | |
"languages": ["German", "English", "Spanish", "Chinese", "French"], | |
"population": 311, | |
"gdp": 36.081 | |
}, | |
{ | |
"_id": "uk", | |
"name": "United Kingdom", | |
"languages": ["English", "Irish", "Scottish Gaelic"], | |
"population": 62.3, | |
"gdp": 36.081 | |
}, | |
{ | |
"_id": "es", | |
"name": "Spain", | |
"languages": ["Spanish"], | |
"population": 30.6, | |
"gdp": 36.081 | |
}, | |
{ | |
"_id": "gr", | |
"name": "Greece", | |
"languages": ["Greek"], | |
"population": 11.0, | |
"gdp": 36.081 | |
}, | |
{ | |
"_id": "ca", | |
"name": "Canada", | |
"languages": ["English", "French", "Spanish"], | |
"population": 40.1, | |
"gdp": 40.457 | |
} | |
] | |
}; |
<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset='UTF-8'/> | |
<title>Dance.js - The Barchart Dance</title> | |
<link rel='stylesheet' href='barchart.css'> | |
<script src='https://raw.github.com/documentcloud/underscore/87cac5bd057ceafd6f779b1df33de61ca21b5e1d/underscore.js'></script> | |
<!--<script src='https://raw.github.com/michael/data/a38f5fd92a5490dc5ab6a2e95e88ecba2e644c71/data.js'></script>--> | |
<script src='https://raw.github.com/michael/data/fe65cb9ab32fbee59f14f44e17e186cf69ff16a7/data.js'></script> | |
<script src='http://code.jquery.com/jquery-1.7.2.min.js'></script> | |
<script src='https://raw.github.com/michael/dance/96cb9a6384acce19202275c6dce9b7fbdac87763/dance.js'></script> | |
<!-- Countries data --> | |
<script src='countries.js'></script> | |
<!-- Dance Performers --> | |
<script src="barchart.js"></script> | |
<script> | |
$(function() { | |
var countries = new Data.Collection(countries_data); | |
window.barchart = new Barchart({}); | |
barchart.update(countries, "gdp"); | |
// Update | |
function update() { | |
var language = $('#language').val(); | |
var query = {}; | |
if (language) query["languages"] = [ language ]; | |
var items = countries.find(query); | |
barchart.update(items, $('#property').val()); | |
} | |
$('#property').change(update); | |
$('#language').change(update); | |
}); | |
</script> | |
</head> | |
<body> | |
<div id='container'> | |
<select id="property"> | |
<option value="gdp">GDP (thousands, per capita)</option> | |
<option value="population">Population (millions)</option> | |
</select> | |
<select id="language"> | |
<option value="">All</option> | |
<option value="English">English</option> | |
<option value="French">French</option> | |
<option value="German">German</option> | |
<option value="Greek">Greek</option> | |
<option value="Spanish">Spanish</option> | |
<option value="Scottish Gaelic">Scottish Gaelic</option> | |
</select> | |
<div id='canvas'></div> | |
</div> | |
</body> | |
</html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
This comment has been minimized.
Hi,
Is there any quick way to to make the bars horizontal without digging too much into the code?
Thanks!