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tag_cloud.html
112 lines (99 loc) · 4.53 KB
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tag_cloud.html
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<script src="{{PATHS.static}}/js/d3.min.js"></script>
<script src="{{PATHS.static}}/js/d3.layout.cloud.js"></script>
<script>
function sanitiseCategory(cat) {
return cat.replace(/\s/g, '_').toLowerCase();
}
function drawTagCloud(cat, siteList) {
var container = document.getElementById('tag_cloud_container');
var width = Math.max(container.offsetWidth, 300);
var height = Math.max(container.offsetHeight - 5, 400);
var containerSvg = document.getElementById('tag_cloud');
containerSvg.setAttribute('width', width);
containerSvg.setAttribute('height', height);
var sites = JSON.parse(siteList);
var minSize = 20;
var maxSize = 100;
var scaleFactor = (maxSize - minSize) / 0.3;
var layout = d3.layout.cloud()
.size([width, height])
.words(sites.map(function (d) {
return {
text: d.site.replace('www.', ''),
size: Math.min(maxSize, minSize + d.frequency * scaleFactor),
rotate: 0,
opacity: 0.5 + (d.site_freq || 0. * 0.7),
colour: d.site_cat,
href: d.url,
category: d.category,
};
}))
.padding(3)
.rotate(function (d) { return 0 })
.font("Impact")
.fontSize(function (d) { return d.size; })
.on("end", draw);
layout.start();
function draw(words) {
d3.select('#tag_cloud')
.append("g")
.attr("transform", "translate(" + layout.size()[0] / 2 + "," + layout.size()[1] / 2 + ")")
.selectAll("text")
.data(words)
.enter().append("text")
.style("font-size", function (d) { return d.size + "px"; })
.style("font-family", "Helvetica")
.style("fill", function (d) { return d.colour })
.attr("class", function (d) { return "category-" + sanitiseCategory(d.category) })
.attr("opacity", function (d) { return d.opacity })
.attr("text-anchor", "middle")
.attr("transform", function (d) {
return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
})
.insert('a')
.attr("href", function (d) { return d.href })
.text(function (d) { return d.text; });
}
}
var activeCategories = [];
function toggleTagCloudCategory(cat) {
if (cat === "all") {
// unselect buttons
activeCategories.forEach(function(otherCat) {
document.getElementById('button-' + otherCat).classList.remove('active');
});
document.getElementById('button-all').classList.add('active');
// make everything visible
d3.selectAll("#tag_cloud text").style("visibility", "visible");
activeCategories = [];
} else {
document.getElementById('button-all').classList.remove('active');
document.getElementById('button-' + cat).classList.add('active');
if (activeCategories.length === 0) {
// hide everything
d3.selectAll("#tag_cloud text").style("visibility", "hidden");
}
// make just elements from specified categories visible
d3.selectAll("#tag_cloud text.category-" + sanitiseCategory(cat)).style("visibility", "visible");
activeCategories.push(cat);
}
}
</script>
<ul class="nav nav-tabs">
<li class="active" id="button-all">
<a href="#all" onclick="toggleTagCloudCategory('all')">Show all</a>
</li>
{% for cat in sites_by_cat.keys()|sort %}
{% if cat %}
<li id="button-{{cat}}">
<a href="#{{cat}}" onclick="toggleTagCloudCategory('{{cat}}')">{{cat|prettify_label}}</a>
</li>
{% endif %}
{% endfor %}
</ul>
<div class="tab-content">
<div id="tag_cloud_container" class="tab-pane fade in active">
<svg id="tag_cloud" height=400></svg>
<script>drawTagCloud('all', '{{ website_list|tojson|safe }}')</script>
</div>
</div>