index.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>Treemap - Neat Zoom Effect</title>
<script type="text/javascript" src="//www.billdwhite.com/wordpress/wp-content/js/browserdetect/browserdetect.js"></script>
<script type="text/javascript" src="//www.billdwhite.com/wordpress/wp-content/js/d3/d3.js"></script>
<style type="text/css">
body {
overflow: hidden;
margin: 0;
font-size: 12px;
font-family: "Helvetica Neue", Helvetica;
}
.footer {
z-index: 1;
display: block;
font-size: 26px;
font-weight: 200;
text-shadow: 0 1px 0 #fff;
}
svg {
overflow: hidden;
}
rect {
pointer-events: all;
cursor: pointer;
stroke: #EEEEEE;
}
.chart {
display: block;
margin: auto;
}
.parent .label {
color: #FFFFFF;
text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
-webkit-text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
-moz-text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
}
.labelbody {
background: transparent;
}
.label {
margin: 2px;
white-space: pre;
overflow: hidden;
text-overflow: ellipsis;
text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
-webkit-text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
-moz-text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
}
.child .label {
white-space: pre-wrap;
text-align: center;
text-overflow: ellipsis;
}
.cell {
font-size: 11px;
cursor: pointer
}
</style>
</head>
<body>
<div id="body"></div>
<div class="footer">
<select>
<option value="size">Size</option>
<option value="count">Count</option>
</select>
</div>
</body>
<script type="text/javascript">
var isIE = BrowserDetect.browser == 'Explorer';
var chartWidth = 550;
var chartHeight = 550;
var xscale = d3.scale.linear().range([0, chartWidth]);
var yscale = d3.scale.linear().range([0, chartHeight]);
var color = d3.scale.category10();
var headerHeight = 20;
var headerColor = "#555555";
var transitionDuration = 500;
var root;
var node;
var treemap = d3.layout.treemap()
.round(false)
.size([chartWidth, chartHeight])
.sticky(true)
.value(function(d) {
return d.size;
});
var svg = d3.select("#body")
.append("svg:svg")
.attr("width", chartWidth)
.attr("height", chartHeight);
var chart = svg.append("svg:g");
var defs = svg.append("defs");
var filter = defs.append("svg:filter")
.attr("id", "outerDropShadow")
.attr("x", "-20%")
.attr("y", "-20%")
.attr("width", "140%")
.attr("height", "140%");
filter.append("svg:feOffset")
.attr("result", "offOut")
.attr("in", "SourceGraphic")
.attr("dx", "1")
.attr("dy", "1");
filter.append("svg:feColorMatrix")
.attr("result", "matrixOut")
.attr("in", "offOut")
.attr("type", "matrix")
.attr("values", "1 0 0 0 0 0 0.1 0 0 0 0 0 0.1 0 0 0 0 0 .5 0");
filter.append("svg:feGaussianBlur")
.attr("result", "blurOut")
.attr("in", "matrixOut")
.attr("stdDeviation", "3");
filter.append("svg:feBlend")
.attr("in", "SourceGraphic")
.attr("in2", "blurOut")
.attr("mode", "normal");
d3.json("../data/flare2.json", function(data) {
node = root = data;
var nodes = treemap.nodes(root);
var children = nodes.filter(function(d) {
return !d.children;
});
var parents = nodes.filter(function(d) {
return d.children;
});
var parentCells = chart.selectAll("g.cell.parent")
.data(parents, function(d) {
return "p-" + d.id;
});
var parentEnterTransition = parentCells.enter()
.append("g")
.attr("class", "cell parent")
.on("click", function(d) {
zoom(d);
});
parentEnterTransition.append("rect")
.attr("width", function(d) {
return Math.max(0.01, d.dx);
})
.attr("height", headerHeight)
.style("fill", headerColor);
parentEnterTransition.append('foreignObject')
.attr("class", "foreignObject")
.append("xhtml:body")
.attr("class", "labelbody")
.append("div")
.attr("class", "label");
var parentUpdateTransition = parentCells.transition().duration(transitionDuration);
parentUpdateTransition.select(".cell")
.attr("transform", function(d) {
return "translate(" + d.dx + "," + d.y + ")";
});
parentUpdateTransition.select("rect")
.attr("width", function(d) {
return Math.max(0.01, d.dx);
})
.attr("height", headerHeight)
.style("fill", headerColor);
parentUpdateTransition.select(".foreignObject")
.attr("width", function(d) {
return Math.max(0.01, d.dx);
})
.attr("height", headerHeight)
.select(".labelbody .label")
.text(function(d) {
return d.name;
});
parentCells.exit()
.remove();
var childrenCells = chart.selectAll("g.cell.child")
.data(children, function(d) {
return "c-" + d.id;
});
var childEnterTransition = childrenCells.enter()
.append("g")
.attr("class", "cell child")
.on("click", function(d) {
zoom(node === d.parent ? root : d.parent);
})
.on("mouseover", function() {
this.parentNode.appendChild(this);
d3.select(this)
.attr("filter", "url(#outerDropShadow)")
.select(".background")
.style("stroke", "#000000");
})
.on("mouseout", function() {
d3.select(this)
.attr("filter", "")
.select(".background")
.style("stroke", "#FFFFFF");
});
childEnterTransition.append("rect")
.classed("background", true)
.style("fill", function(d) {
return color(d.parent.name);
});
childEnterTransition.append('foreignObject')
.attr("class", "foreignObject")
.attr("width", function(d) {
return Math.max(0.01, d.dx);
})
.attr("height", function(d) {
return Math.max(0.01, d.dy);
})
.append("xhtml:body")
.attr("class", "labelbody")
.append("div")
.attr("class", "label")
.text(function(d) {
return d.name;
});
if (isIE) {
childEnterTransition.selectAll(".foreignObject .labelbody .label")
.style("display", "none");
} else {
childEnterTransition.selectAll(".foreignObject")
.style("display", "none");
}
var childUpdateTransition = childrenCells.transition().duration(transitionDuration);
childUpdateTransition.select(".cell")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
childUpdateTransition.select("rect")
.attr("width", function(d) {
return Math.max(0.01, d.dx);
})
.attr("height", function(d) {
return d.dy;
})
.style("fill", function(d) {
return color(d.parent.name);
});
childUpdateTransition.select(".foreignObject")
.attr("width", function(d) {
return Math.max(0.01, d.dx);
})
.attr("height", function(d) {
return Math.max(0.01, d.dy);
})
.select(".labelbody .label")
.text(function(d) {
return d.name;
});
childrenCells.exit()
.remove();
d3.select("select").on("change", function() {
console.log("select zoom(node)");
treemap.value(this.value == "size" ? size : count)
.nodes(root);
zoom(node);
});
zoom(node);
});
function size(d) {
return d.size;
}
function count(d) {
return 1;
}
function textHeight(d) {
var ky = chartHeight / d.dy;
yscale.domain([d.y, d.y + d.dy]);
return (ky * d.dy) / headerHeight;
}
function getRGBComponents (color) {
var r = color.substring(1, 3);
var g = color.substring(3, 5);
var b = color.substring(5, 7);
return {
R: parseInt(r, 16),
G: parseInt(g, 16),
B: parseInt(b, 16)
};
}
function idealTextColor (bgColor) {
var nThreshold = 105;
var components = getRGBComponents(bgColor);
var bgDelta = (components.R * 0.299) + (components.G * 0.587) + (components.B * 0.114);
return ((255 - bgDelta) < nThreshold) ? "#000000" : "#ffffff";
}
function zoom(d) {
this.treemap
.padding([headerHeight/(chartHeight/d.dy), 0, 0, 0])
.nodes(d);
var kx = chartWidth / d.dx;
var ky = chartHeight / d.dy;
var level = d;
xscale.domain([d.x, d.x + d.dx]);
yscale.domain([d.y, d.y + d.dy]);
if (node != level) {
if (isIE) {
chart.selectAll(".cell.child .foreignObject .labelbody .label")
.style("display", "none");
} else {
chart.selectAll(".cell.child .foreignObject")
.style("display", "none");
}
}
var zoomTransition = chart.selectAll("g.cell").transition().duration(transitionDuration)
.attr("transform", function(d) {
return "translate(" + xscale(d.x) + "," + yscale(d.y) + ")";
})
.each("end", function(d, i) {
if (!i && (level !== self.root)) {
chart.selectAll(".cell.child")
.filter(function(d) {
return d.parent === self.node;
})
.select(".foreignObject .labelbody .label")
.style("color", function(d) {
return idealTextColor(color(d.parent.name));
});
if (isIE) {
chart.selectAll(".cell.child")
.filter(function(d) {
return d.parent === self.node;
})
.select(".foreignObject .labelbody .label")
.style("display", "")
} else {
chart.selectAll(".cell.child")
.filter(function(d) {
return d.parent === self.node;
})
.select(".foreignObject")
.style("display", "")
}
}
});
zoomTransition.select(".foreignObject")
.attr("width", function(d) {
return Math.max(0.01, kx * d.dx);
})
.attr("height", function(d) {
return d.children ? headerHeight: Math.max(0.01, ky * d.dy);
})
.select(".labelbody .label")
.text(function(d) {
return d.name;
});
zoomTransition.select("rect")
.attr("width", function(d) {
return Math.max(0.01, kx * d.dx);
})
.attr("height", function(d) {
return d.children ? headerHeight : Math.max(0.01, ky * d.dy);
})
.style("fill", function(d) {
return d.children ? headerColor : color(d.parent.name);
});
node = d;
if (d3.event) {
d3.event.stopPropagation();
}
}
</script>
</html>