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added zoom functionality to base d3 visualization. #1

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276 changes: 141 additions & 135 deletions vis/index.html
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Original file line number Diff line number Diff line change
@@ -1,149 +1,155 @@
<!DOCTYPE html>
<html lang="en">
<head>

<head>
<meta charset="utf-8">
<title>Glove word cloud visualization</title>
<script type="text/javascript" src="/vis/d3.min.js"></script>
<style type="text/css">
/* No style rules here yet */
/* No style rules here yet */
</style>
</head>
<!-- http://stackoverflow.com/questions/23378540/select-dot-in-scatter-plot-based-on-data-id-in-d3js -->
<!-- http://pothibo.com/2013/09/d3-js-how-to-handle-dynamic-json-data/ -->
</head>
<!-- http://stackoverflow.com/questions/23378540/select-dot-in-scatter-plot-based-on-data-id-in-d3js -->
<!-- http://pothibo.com/2013/09/d3-js-how-to-handle-dynamic-json-data/ -->

<body>
<body>
<script type="text/javascript">

var w = window.innerWidth;
var h = window.innerHeight;
var minSize = d3.min([w, h]);
var xMargin = 0.2;
var yMargin = 0.2;

var xScale = d3.scale.linear().range([w/2-minSize/2*(1-xMargin), w/2+minSize/2*(1-xMargin)]);
var yScale = d3.scale.linear().range([h/2-minSize/2*(1-yMargin), h/2+minSize/2*(1-yMargin)]);

function x(d) { return xScale(d[1]); }
function y(d) { return yScale(d[2]); }
function textY(d) { return y(d)-6; }

function update(word, svg) {
var url = "/vis/?q="+word;
var endpointUrl = "/glove/?limit=50&q="+word;
if (g_localProjection) {
url += "&lp=1";
endpointUrl += "&globalProjection=0";
}
window.history.pushState(word, "Glove word cloud : "+word, url);
d3.json(endpointUrl, function(error, root) {
if (error) throw error;

var gText = svg.selectAll("text")
// We want objects to be identified by their text content,
// not their index in the array, hence the extra accessor.
// http://stackoverflow.com/questions/19268360/i-want-to-update-the-data-on-this-d3-js-bar-chart-by-clicking-a-button-onclick
.data(root.objects, function(d) { return "text_"+d[0]; } );
var gCirc = svg.selectAll(".dot")
.data(root.objects, function(d) { return "circ_"+d[0]; } );

var xCoords = root.objects.map( function(d) { return d[1] } );
var yCoords = root.objects.map( function(d) { return d[2] } );
xScale.domain([d3.min(xCoords), d3.max(xCoords)]);
yScale.domain([d3.min(yCoords), d3.max(yCoords)]);

gCirc.transition()
.duration(2000)
.attr("cx", x)
.attr("cy", y);
gText.transition()
.duration(2000)
.attr("x", x)
.attr("y", textY);

gText.enter().append("text")
.text(function(d) { return d[0]; })
.attr("x", x)
.attr("y", textY)
.attr("text-anchor", "middle")
.attr("id", function(d) { return d[0]; })
.attr("font-family", "sans-serif")
.attr("font-size", "20px")
.attr("fill", "black")
.attr('opacity', 1e-6)
.transition()
.duration(1500)
.attr('opacity', 1);

gCirc.enter().append("svg:circle")
// TODO The text should be highlighted if the circle gets a mouseover.
.on("mouseover", function(d) { d3.select(this).attr("fill-opacity", 0.8); })
.on("mouseout", function(d) { d3.select(this).attr("fill-opacity", 0.3); })
.on("click", function(d) {
update(d[0], svg);
})
.attr("class", "dot")
.attr("r", 10)
.attr("stroke", "")
.attr("cx", x)
.attr("cy", y)
.attr("id", function(d) { return d[0]; })
.style("fill", "blue")
.attr("fill-opacity", 1e-6)
.transition()
.duration(1500)
.attr('fill-opacity', 0.3)
;

gText.exit().transition()
.duration(1000)
.attr('opacity', 1e-6)
.remove();

gCirc.exit().transition()
.duration(1000)
.attr('fill-opacity', 1e-6)
.remove();

});
}

function getQueryVariable(variable) {
var query = window.location.search.substring(1);
var vars = query.split("&");
for (var i=0;i<vars.length;i++) {
var pair = vars[i].split("=");
if(pair[0] == variable) {return pair[1];}
}
return(false);
}

function init() {

var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);

var word = "hold";
urlWord = getQueryVariable("q");
if (urlWord) {
word = urlWord;
word = word.replace("/","");
}

// Global variable!
if (getQueryVariable("lp")==1) {
g_localProjection = 1;
} else {
g_localProjection = 0;
}

update(word, svg);
}

init();
var w = window.innerWidth;
var h = window.innerHeight;
var minSize = d3.min([w, h]);
var xMargin = 0.2;
var yMargin = 0.2;

var xScale = d3.scale.linear().range([w / 2 - minSize / 2 * (1 - xMargin), w / 2 + minSize / 2 * (1 - xMargin)]);
var yScale = d3.scale.linear().range([h / 2 - minSize / 2 * (1 - yMargin), h / 2 + minSize / 2 * (1 - yMargin)]);

function x(d) { return xScale(d[1]); }
function y(d) { return yScale(d[2]); }
function textY(d) { return y(d) - 6; }

function update(word, svg) {
var url = "/vis/?q=" + word;
var endpointUrl = "/glove/?limit=50&q=" + word;
if (g_localProjection) {
url += "&lp=1";
endpointUrl += "&globalProjection=0";
}
window.history.pushState(word, "Glove word cloud : " + word, url);
d3.json(endpointUrl, function (error, root) {
if (error) throw error;

var gText = svg.selectAll("text")
// We want objects to be identified by their text content,
// not their index in the array, hence the extra accessor.
// http://stackoverflow.com/questions/19268360/i-want-to-update-the-data-on-this-d3-js-bar-chart-by-clicking-a-button-onclick
.data(root.objects, function (d) { return "text_" + d[0]; });
var gCirc = svg.selectAll(".dot")
.data(root.objects, function (d) { return "circ_" + d[0]; });

var xCoords = root.objects.map(function (d) { return d[1] });
var yCoords = root.objects.map(function (d) { return d[2] });
xScale.domain([d3.min(xCoords), d3.max(xCoords)]);
yScale.domain([d3.min(yCoords), d3.max(yCoords)]);

gCirc.transition()
.duration(2000)
.attr("cx", x)
.attr("cy", y);
gText.transition()
.duration(2000)
.attr("x", x)
.attr("y", textY);

gText.enter().append("text")
.text(function (d) { return d[0]; })
.attr("x", x)
.attr("y", textY)
.attr("text-anchor", "middle")
.attr("id", function (d) { return d[0]; })
.attr("font-family", "sans-serif")
.attr("font-size", "20px")
.attr("fill", "black")
.attr('opacity', 1e-6)
.transition()
.duration(1500)
.attr('opacity', 1);

gCirc.enter().append("svg:circle")
// TODO The text should be highlighted if the circle gets a mouseover.
.on("mouseover", function (d) { d3.select(this).attr("fill-opacity", 0.8); })
.on("mouseout", function (d) { d3.select(this).attr("fill-opacity", 0.3); })
.on("click", function (d) {
update(d[0], svg);
})
.attr("class", "dot")
.attr("r", 10)
.attr("stroke", "")
.attr("cx", x)
.attr("cy", y)
.attr("id", function (d) { return d[0]; })
.style("fill", "blue")
.attr("fill-opacity", 1e-6)
.transition()
.duration(1500)
.attr('fill-opacity', 0.3)
;

gText.exit().transition()
.duration(1000)
.attr('opacity', 1e-6)
.remove();

gCirc.exit().transition()
.duration(1000)
.attr('fill-opacity', 1e-6)
.remove();

});
}

function getQueryVariable(variable) {
var query = window.location.search.substring(1);
var vars = query.split("&");
for (var i = 0; i < vars.length; i++) {
var pair = vars[i].split("=");
if (pair[0] == variable) { return pair[1]; }
}
return (false);
}

function init() {

var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h)
.call(d3.behavior.zoom().on("zoom", function () {
svg.attr("transform", "translate(" + d3.event.translate + ")" + " scale(" + d3.event.scale + ")")
}))
.append("g")

var word = "hold";
urlWord = getQueryVariable("q");
if (urlWord) {
word = urlWord;
word = word.replace("/", "");
}

// Global variable!
if (getQueryVariable("lp") == 1) {
g_localProjection = 1;
} else {
g_localProjection = 0;
}

update(word, svg);
}

init();


</script>
</body>
</body>

</html>