Created
August 19, 2012 03:37
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Reusable Component: MathJax label
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Line Chart</title> | |
| <link href="MathJax.css" rel="stylesheet" type="text/css"> | |
| </head> | |
| <body> | |
| <script type="text/javascript" src="http://d3js.org/d3.v2.js"></script> | |
| <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_SVG"></script> | |
| <script type="text/javascript" src="mathjaxlabel.js"></script> | |
| <script type="text/javascript"> | |
| var margin = {"top": 100, "right": 100, "bottom": 100, "left": 100}, | |
| height = 300, | |
| width = 300, | |
| title = ["\\(Title\\)","\\(sin(\\phi)\\)"], | |
| ylabel = ["\\(Y Label\\)","\\(Random LaTex ^{4}_{2}He\\)"], | |
| xlabel = ["\\(This is not getting positioned correctly\\)","\\(Should be at the bottom of the margin\\)"]; | |
| var gEnter = d3.select("body") | |
| .append("svg").attr("width",500).attr("height",500) | |
| .append("g").attr("class","container"); | |
| gEnter.append("rect").attr("width",300).attr("height",300).attr("transform","translate("+margin.left+","+margin.top+")"); | |
| // X Label | |
| var xlbl = mathJaxLabel().width(width).height(margin.bottom); | |
| gEnter.append("g") | |
| .attr("class","xlabel") | |
| .datum(xlabel) | |
| .attr("transform", "translate("+margin.left+","+(margin.top + 300) +")"); | |
| d3.selectAll("g.xlabel").call(xlbl); | |
| // Y Label | |
| var ylbl = mathJaxLabel().width(height).height(margin.left); | |
| gEnter.append("g") | |
| .attr("transform","rotate(-90)") | |
| .attr("class","ylabel") | |
| .datum(ylabel) | |
| .attr("transform", "translate(0,"+(margin.top + 300)+")rotate(-90)"); | |
| d3.selectAll("g.ylabel").call(ylbl); | |
| // Title | |
| var ttl = mathJaxLabel().width(width).height(margin.bottom); | |
| gEnter.append("g") | |
| .attr("class","title") | |
| .datum(title) | |
| .attr("transform", "translate(100,0)"); | |
| d3.selectAll("g.title").call(ttl); | |
| </script> | |
| </body> | |
| </html> |
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| rect { | |
| fill:yellow | |
| } | |
| .xlabel div.holder{ | |
| position: relative; | |
| height: 100%; | |
| width: 100%; | |
| } | |
| .xlabel div.lines{ | |
| position: absolute; | |
| bottom: 0; | |
| width: 100%; | |
| } |
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| function mathJaxLabel(){ | |
| //Adds a foreignObject to store mathJax Text, assumes data is a string formatted for mathJax | |
| // Refer to this for mathJax rerendering voodoo: view-source:http://cdn.mathjax.org/mathjax/latest/test/sample-dynamic.html | |
| var height, | |
| width; | |
| function label(selection){ | |
| selection.each(function(data) { | |
| var container = d3.select(this), | |
| QUEUE = MathJax.Hub.queue; | |
| var fo = container.selectAll(".label").data(function(d){return [d]}), | |
| foEnter = fo.enter().append("foreignObject") | |
| .attr("class","label") | |
| .append("xhtml:body") | |
| .attr("xmlns","http://www.w3.org/1999/xhtml") | |
| .append("xhtml:div") | |
| .attr("class","holder") | |
| .append("xhtml:div") | |
| .attr("class","lines") | |
| forUpdate = d3.transition(fo).attr("height",height).attr("width",width), | |
| bUpdate = d3.transition(fo.selectAll("body")).style("height",height+"px").style("width",width+"px"), | |
| foExit = d3.transition(fo.exit()).remove(); | |
| function toggleDisplay(selection){ | |
| selection.each(function() { | |
| var el = d3.select(this), | |
| state = el.style("display") | |
| el.style("display",function(){ | |
| return (state == "block")?"none":"block";})})}; | |
| function updateMath(item,i){ | |
| //Escape whitespace so that user doesn't have to | |
| var newtext = item.select(".input").property("value").split(" ").join("\\ "), | |
| math = MathJax.Hub.getAllJax(item.selectAll("div.div").node())[0], | |
| data = container.datum(); | |
| data[0][i] = "\\("+newtext+"\\)"; | |
| QUEUE.Push(["Text",math,newtext], | |
| function(){item.selectAll(".div,.input").call(toggleDisplay)}); | |
| container.datum(data);} | |
| //each line | |
| var nl = container.selectAll("body div.lines").selectAll("div.newline").data(function(d){return d}), | |
| nlEnter = nl.enter().append("xhtml:div") | |
| .attr("class","newline") | |
| .attr("align","center"); | |
| nlExit = nl.exit().remove(); | |
| //mJax holder | |
| var mjax = nlEnter.append("xhtml:div") | |
| .attr("class","div") | |
| .attr("align","center") | |
| .style("display","none") | |
| .html(function(d){return d.split(" ").join("\\ ")}) | |
| ; | |
| //Input | |
| var inpt = nlEnter.append("xhtml:input") | |
| .attr("class","input") | |
| .style("display","none") | |
| .property("value",function(d){return d.slice(-(d.length -2),(d.length-2))}); | |
| //Display math elements once initialized. | |
| QUEUE.Push(function () { | |
| math = MathJax.Hub.getAllJax(container.selectAll("div.div")[0][0])[0]; | |
| container.selectAll("div.div").style("display","block"); | |
| }); | |
| //Behaviours | |
| container.selectAll("div.newline") | |
| .on("dblclick",function(d,i){ | |
| var el = d3.select(this); | |
| (el.select(".input").style("display") !== "none")?updateMath(el,i):el.selectAll(".div,.input").call(toggleDisplay)}) | |
| .each(function(d,i){ | |
| var el = d3.select(this), | |
| id = i; | |
| el.selectAll(".input") | |
| .on("change",function(){updateMath(el,id)})}); | |
| }); | |
| }; | |
| label.width = function(_) { | |
| if (!arguments.length) return width; | |
| width = _; | |
| return label; | |
| }; | |
| label.height = function(_) { | |
| if (!arguments.length) return height; | |
| height = _; | |
| return label; | |
| }; | |
| return label; | |
| } |
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Cool stuff. Here is the link to see it in action: http://bl.ocks.org/chrisbrich/3391642