$(function(){
var IDEALRATIO = 1.25;
function cuttree(data, x, y, w, h, cut, ratio, callback) {
function f(subdata, subx, suby, subw, subh) {
if (subdata.length == 1) {
subdata[0].x = subx;
subdata[0].y = suby;
subdata[0].w = subw;
subdata[0].h = subh;
} else {
callback(subdata, subx, suby, subw, subh)
}
}
var first = _(data).first(cut), rest = _(data).rest(cut);
if (!first.length || !rest.length) {
return;
}
if (w/h > IDEALRATIO) {
var leftw = w * ratio;
f(first, x, y, leftw, h);
f(rest, x + leftw, y, w - leftw, h);
} else {
var toph = h * ratio;
f(first, x, y, w, toph);
f(rest, x, y + toph, w, h - toph);
}
}
function pivot(data, x, y, w, h) {
if (data.length == 1) {
data[0].x = x;
data[0].y = x;
data[0].w = w;
data[0].h = h;
return;
}
var cut = 1, cumul = 0, bestcumul = 0, total = _(data).reduce(function(a,b){return a+b.value},0), bestcut = Infinity;
for (var i = 0; i < data.length - 1; i++) {
cumul += data[i].value;
var delta = Math.abs(cumul - total/2);
if (delta < bestcut) {
bestcut = delta;
bestcumul = cumul;
cut = i+1;
} else {
break;
}
}
cuttree(data, x, y, w, h, cut, bestcumul / total, pivot);
}
function squarify(data, x, y, w, h) {
if (data.length == 1) {
data[0].x = x;
data[0].y = x;
data[0].w = w;
data[0].h = h;
return;
}
var cut = 1, cumul = 0, bestcumul = 0, total = _(data).reduce(function(a,b){return a+b.value},0), bestcut = Infinity;
for (var i = 0; i < data.length - 1; i++) {
cumul += data[i].value;
cuttree(data, x, y, w, h, i+1, cumul / total, pivot);
var ratio = Math.abs(Math.log(IDEALRATIO*data[0].h/data[0].w));
if (ratio < bestcut) {
bestcut = ratio;
bestcumul = cumul;
cut = i+1;
} else {
break;
}
}
cuttree(data, x, y, w, h, cut, bestcumul / total, squarify);
}
/* SOURCE : http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript */
/**
* Converts an HSV color value to RGB. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSV_color_space.
* Assumes h, s, and v are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
*
* @param Number h The hue
* @param Number s The saturation
* @param Number v The value
* @return Array The RGB representation
*/
function hsvToRgb(h, s, v){
var r, g, b;
var i = Math.floor(h * 6);
var f = h * 6 - i;
var p = v * (1 - s);
var q = v * (1 - f * s);
var t = v * (1 - (1 - f) * s);
switch(i % 6){
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
return _([r * 255, g * 255, b * 255]).map(Math.floor);
}
/* Templates des éléments à insérer */
var articleTemplate = _(
'<div class="cluster-article" style="position: absolute; left: <%=x%>px; top: <%=y%>px; width: <%=w%>px; height: <%=h%>px; background: <%=color%>">'+
'<%=label%>'+
'</div>'
).template();
var clusterTemplate = _(
'<div class="actu" style="left: <%=x%>px; top: <%=y%>px; width: <%=w%>px; height: <%=h%>px; background: <%=color%>">'+
'<a href="#">'+
// '<img src="img/home-visuel-<%-i%>.jpg" alt="" />'+
'<%=articles%>'+
'<div class="voile"></div>'+
'</a>'+
'<div class="inner-actu">'+
'<h2><a href="#"><%-label%></a></h2>'+
'<div class="links">'+
'<ul>'+
'<li><a href="#" title="<%=annotation_count%> Annotations sur ce cluster" class="file"><span><%=annotation_count%></span></a></li>'+
'</ul>'+
'</div>'+
'</div>'+
'</div>'
).template();
var hTreemap = 600;//à définir
$('#treemap').height(hTreemap);
function showResults(results) {
var data = _(results.clusters).map(function(cluster, i) {
var hue = (i%6)/6
return {
label: cluster.title,
value: parseFloat(cluster.weight),
color: "rgb(" + hsvToRgb(hue,.8,.8).join(",") + ")",
annotation_count: cluster.annotations.length,
articles: _(cluster.documents).map(function(article, j) {
return {
label: article.title,
value: parseFloat(article.weight),
color: "rgb(" + hsvToRgb(hue,.8,.9-.1*(j%6)).join(",") + ")"
}
})
}
});
data _(data).sortBy(function(d) {
return -d.value;
});
squarify(data,0,0,760,hTreemap);
_(data).each(function(cluster) {
squarify(cluster.articles, 0, 0, cluster.w, cluster.h);
_(cluster.articles).sortBy(function(d) {
return -d.value;
});
cluster.articles = _(cluster.articles).reduce(function(mem, a) {
return mem + articleTemplate(a);
}, "");
});
var treemapHtml = _(data).reduce(function(mem, d) {
return mem + clusterTemplate(d);
},"");
$('#treemap #actus').html(treemapHtml);
}
function renderJson(url) {
$.getJSON(url, showResults);
}
renderJson("data/requete.json");
$(".header-menu a").click(function() {
if ($(this).text() == "INTERNATIONAL") {
renderJson("data/requete_filtre_international.json");
}
if ($(this).text() == "FRANCE") {
renderJson("data/requete_filtre_france.json");
}
if ($(this).hasClass("home")) {
renderJson("data/requete.json")
}
return false;
});
//redimensionnement d'image
/*
$(".actu").each(function(k,v){
var wActu = $(this).width();
var hActu = $(this).height();
var img = $(this).find('img');
img.load(function(){
var img = $(this);
var wImg = img.width();
var hImg = img.height();
var ratioImg = wImg/hImg;
img.css('height',hActu);
img.css('width',hActu*ratioImg);
wImg = img.width();
hImg = img.height();
if(wActu>wImg){
var ratioImg = hImg/wImg;
img.css('width', wActu);
img.css('height',wActu*ratioImg);
wImg = img.width();
hImg = img.height();
}
if (wImg<wActu) {
img.css('margin-left',(wActu-wImg)/2);
}else{
img.css('margin-left',-(wImg-wActu)/2);
}
if (hImg<hActu) {
img.css('margin-top',(hActu-hImg)/2);
}else{
img.css('margin-top',-(hImg-hActu)/2);
}
});
});
*/
$("#liste").hide();
})