buildtreemap.js
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/**
* Created by Utente on 17/07/2015.
*/
function build(root, meta, place_holder, select_listener, width, height) {
var plwidth = width >= 0 ? width : $("#" + place_holder).width(),
plheight = height >= 0 ? height : $("#" + place_holder).height();
var margin = {top: 20, right: 0, bottom: 0, left: 0},
width = plwidth,
height = plheight - margin.top - margin.bottom,
formatNumber = d3.format(",d"),
transitioning;
var x = d3.scale.linear()
.domain([0, width])
.range([0, width]);
var y = d3.scale.linear()
.domain([0, height])
.range([0, height]);
var treemap = d3.layout.treemap()
.children(function(d, depth) { return depth ? null : d._children; })
.sort(function(a, b) { return a.value - b.value; })
.ratio(height / width * 0.5 * (1 + Math.sqrt(5)))
.round(false);
var svg = d3.select("#" + place_holder)
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.bottom + margin.top)
.style("margin-left", -margin.left + "px")
.style("margin.right", -margin.right + "px")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.style("shape-rendering", "crispEdges");
var grandparent = svg.append("g")
.attr("class", "grandparent");
var dataletContainer = null;
grandparent.append("rect")
.attr("y", -margin.top)
.attr("width", width)
.attr("height", margin.top);
grandparent.append("text")
.attr("x", 6)
.attr("y", 6 - margin.top)
.attr("dy", ".75em");
//d3.json
initialize(root);
accumulate(root);
layout(root);
display(root);
function initialize(root) {
root.x = root.y = 0;
root.dx = width;
root.dy = height;
root.depth = 0;
}
// Aggregate the values for internal nodes. This is normally done by the
// treemap layout, but not here because of our custom implementation.
// We also take a snapshot of the original children (_children) to avoid
// the children being overwritten when when layout is computed.
function accumulate(d) {
return (d._children = d.children)
? d.value = d.children.reduce(function(p, v) { return p + accumulate(v); }, 5)
: d.value;
}
// Compute the treemap layout recursively such that each group of siblings
// uses the same size (1×1) rather than the dimensions of the parent cell.
// This optimizes the layout for the current zoom state. Note that a wrapper
// object is created for the parent node for each group of siblings so that
// the parent’s dimensions are not discarded as we recurse. Since each group
// of sibling was laid out in 1×1, we must rescale to fit using absolute
// coordinates. This lets us use a viewport to zoom.
function layout(d) {
if (d._children) {
treemap.nodes({_children: d._children});
var i = 0;
d._children.forEach(function(c) {
c.x = d.x + c.x * d.dx;
c.y = d.y + c.y * d.dy;
c.dx *= d.dx;
c.dy *= d.dy;
c.parent = d;
c.depth = d.depth + 1;
c.color = c.depth < 2
? d3.scale.ordinal().domain(d3.range(d._children.length)).range(["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5","#d9d9d9","#bc80bd","#ccebc5","#ffed6f"])(i++)
: d.color;
layout(c);
});
}
}
function display(d) {
grandparent
.datum(d.parent)
.on("click", transition)
.select("text")
.text(name(d));
var g1 = svg.insert("g", ".grandparent")
.datum(d)
.attr("class", "depth");
var g = g1.selectAll("g")
.data(d._children)
.enter().append("g");
g.filter(function(d) { return d._children; })
.classed("children", true)
.on("click", transition);
g.selectAll(".child")
.data(function(d) { return d._children || [d]; })
.enter().append("rect")
.attr("class", "child")
.call(rect);
g.append("rect")
.attr("class", "parent")
.call(rect)
.attr("onmousemove", function(d) {
//var data = ["lvl", "name", "color", "description", "logoUrl", "datasets", "datasetUrl"];
var data = ["", d.name, d.color, "", "", d.value, ""];
data[2] = ["#000000"];
var id = d.name.split(':')[1];
if (d.depth == 1) {
// FIRST LVL
data[0] = "first";
data[1] = meta[id]['title'];
//data[3] = OW.getLanguageText('openwall', 'provider_'+id);//???
data[3] = (typeof OW == 'undefined') ? "" : OW.getLanguageText('openwall', 'provider_'+id);
data[4] = ((typeof ODE == 'undefined') ? parent.ODE.THEME_IMAGES_URL : ODE.THEME_IMAGES_URL) + "/logos/"+id+".png";//meta[id]['logo_url'];
//data[5] = d.value;
} else if (d._children && !d._children[0]._children) {
// LAST LVL
data[0] = "last";
//data[6] = "datasert url";
} else {
// MIDDLE LVL
data[0] = "middle";
}
return "showTooltip(event, '" + data + "')";
})
.attr("onmouseout", function() {return "hideTooltip()";})
g.append("text")
.attr("dy", ".75em")
.call(text);
function transition(d) {
if (transitioning || !d) return;
transitioning = true;
if (dataletContainer) {
dataletContainer.remove();
dataletContainer = null;
}
var g2 = display(d),
t1 = g1.transition().duration(750),
t2 = g2.transition().duration(750);
// Update the domain only after entering new elements.
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
// Enable anti-aliasing during the transition.
svg.style("shape-rendering", null);
// Draw child nodes on top of parent nodes.
svg.selectAll(".depth").sort(function(a, b) { return b.depth - a.depth; });
// Fade-in entering text.
g2.selectAll("text").style("fill-opacity", 0);
// Transition to the new view.
t1.selectAll("text").call(text).style("fill-opacity", 0);
t2.selectAll("text").call(text).style("fill-opacity", 1);
t1.selectAll("rect").call(rect);
t2.selectAll("rect").call(rect);
// Remove the old node when the transition is finished.
t1.remove().each("end", function() {
svg.style("shape-rendering", "crispEdges");
transitioning = false;
});
}
if (!d._children[0]._children) {
if (select_listener) {
var url = d._children[0].name;
var ret = "Data provider not supported yet."
// Check if CKAN
var strDatasetPos = url.indexOf('/dataset/');
var strResourcePos = (strDatasetPos >= 0) ? url.indexOf('/resource/') : -1;
if (strDatasetPos >= 0 && strResourcePos > strDatasetPos) {
var urlSegment1 = url.substring(0, strDatasetPos);
var urlResourceEnd = url.indexOf('/', strResourcePos + 10);
var resourceId = url.substring(strResourcePos + 10, urlResourceEnd);
ret = urlSegment1 + "/api/action/datastore_search?resource_id=" + resourceId;
}
// Check if OPENDATASOFT
var strExploreDatasetPos = url.indexOf('/explore/dataset/');
if (strExploreDatasetPos >= 0) {
var urlSegment1 = url.substring(0, strExploreDatasetPos);
var datasetEnd = url.indexOf(strExploreDatasetPos + 17, '/');
var datasetId = url.substring(strExploreDatasetPos + 17, datasetEnd >= 0 ? datasetEnd : url.length);
ret = urlSegment1 + '/api/records/1.0/search?dataset=' + datasetId;
}
select_listener(ret);
}
var dataurl = d._children[0].name;
var pageurl = dataurl.replace(/\/download\/.*/, '');
dataletContainer = svg
.append("foreignObject")
.attr("width", root.dx)
.attr("height", root.dy - root.y)
.append("xhtml:body")
.html('<iframe src="'+pageurl+'" width="'+root.dx+'" height="'+root.dy+'"></iframe>');
}
return g;
}
function text(text) {
text
.attr("x", function(d) { return x(d.x) + 6; })
.attr("y", function(d) { return y(d.y) + 6; });
text.call(wrap);
}
function checkProviderName(name) {
if (name.substr(0, 2) == 'p:') {
var pid = name.substr(2);
name = meta[pid].title;
}
return name;
}
function wrap(d) {
var wwidth = width;
var hheight = height;
d.each(function(){
var text = d3.select(this),
d = text[0][0].__data__,
name = checkProviderName(d.name.trim());
words = name.search(/\s+/) >= 0 ? name.split(/\s+/).reverse() : [name],
word = words.pop(),
line = [word],
lineNumber = 0,
lineHeight = 1.1, // ems
//x = parseFloat(text.attr("x")),
//y = parseFloat(text.attr("y")),
dy = parseFloat(text.attr("dy"));
text.selectAll("tspan").remove();
var fx = d3.scale.linear()
.domain([d.parent.x, d.parent.x + d.parent.dx])
.range([0, wwidth]);
var fy = d3.scale.linear()
.domain([d.parent.y, d.parent.y + d.parent.dy])
.range([0, hheight]);
var tspan = text
.text(null)
.append("tspan")
.attr("x", fx(d.x) + 6)
.attr("y", fy(d.y) + 6)
.attr("dy", lineNumber++ * lineHeight + dy + "em")
.text(word);
var width = fx(d.x + d.dx) - fx(d.x) - 12;
var height = fy(d.y + d.dy) - fy(d.y) - 6;
while (word = words.pop()) {
line.push(word);
tspan.text(line.join(" "));
if (tspan.node().getComputedTextLength() > width) {
line.pop();
tspan.text(line.join(" "));
line = [word];
tspan = text
.append("tspan")
.attr("x", fx(d.x) + 6)
.attr("y", fy(d.y) + 6)
.attr("dy", lineNumber++ * lineHeight + dy + "em")
.text(word);
if (text.node().offsetHeight > height) {
tspan.remove();
break;
}
}
}
});
}
function rect(rect) {
rect.attr("x", function(d) { return x(d.x); })
.attr("y", function(d) { return y(d.y); })
.attr("width", function(d) { return x(d.x + d.dx) - x(d.x); })
.attr("height", function(d) { return y(d.y + d.dy) - y(d.y); })
.style("fill", function(d, i) { return d.color; })
;
}
function name(d) {
return d.parent
? name(d.parent) + "." + d.name
: d.name;
}
};
function showTooltip(e, data) {
var data = data.split(",");
treemap_tooltip.name = data[1];
treemap_tooltip.color = data[2];
treemap_tooltip.description = data[3];
treemap_tooltip.logoUrl = data[4];
treemap_tooltip.datasets = data[5];
treemap_tooltip.datasetUrl = data[6];
treemap_tooltip.showTooltip(e, data[0]);
}
function hideTooltip() {
treemap_tooltip.hideTooltip();
}