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timeknots.js
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timeknots.js
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var TimeKnots = {
draw: function(id, events, options){
var cfg = {
width: 600,
height: 200,
radius: 10,
lineWidth: 4,
color: "#999",
background: "#FFF",
dateFormat: "%Y/%m/%d %H:%M:%S",
horizontalLayout: true,
showLabels: false,
labelFormat: "%Y/%m/%d %H:%M:%S",
addNow: false,
seriesColor: d3.scale.category20(),
dateDimension: true,
tooltipDirectionY: -1,
};
//default configuration overrid
if(options != undefined){
for(var i in options){
cfg[i] = options[i];
}
}
if(cfg.addNow != false){
events.push({date: new Date(), name: cfg.addNowLabel || "Today"});
}
var tip = d3.select(id)
.append('div')
.attr('class', 'tooltip')
.style("opacity", 0)
.style("position", "absolute");
var svg = d3.select(id).append('svg').attr("width", cfg.width).attr("height", cfg.height);
//Calculate times in terms of timestamps
if(!cfg.dateDimension){
var timestamps = events.map(function(d){return d.value});//new Date(d.date).getTime()});
var maxValue = d3.max(timestamps);
var minValue = d3.min(timestamps);
}else{
var timestamps = events.map(function(d){return Date.parse(d.date);});//new Date(d.date).getTime()});
var maxValue = d3.max(timestamps);
var minValue = d3.min(timestamps);
}
var margin = (d3.max(events.map(function(d){return d.radius})) || cfg.radius)*1.5+cfg.lineWidth;
var step = (cfg.horizontalLayout)?((cfg.width-2*margin)/(maxValue - minValue)):((cfg.height-2*margin)/(maxValue - minValue));
var series = [];
if(maxValue == minValue){step = 0;if(cfg.horizontalLayout){margin=cfg.width/2}else{margin=cfg.height/2}}
linePrevious = {
x1 : null,
x2 : null,
y1 : null,
y2 : null
}
svg.selectAll("line")
.data(events).enter().append("line")
.attr("class", "timeline-line")
.attr("x1", function(d){
var ret;
if(cfg.horizontalLayout){
var datum = (cfg.dateDimension)?new Date(d.date).getTime():d.value;
ret = Math.floor(step*(datum - minValue) + margin)
}
else{
ret = Math.floor(cfg.width/2)
}
linePrevious.x1 = ret
return ret
})
.attr("x2", function(d){
if (linePrevious.x1 != null){
return linePrevious.x1
}
if(cfg.horizontalLayout){
var datum = (cfg.dateDimension)?new Date(d.date).getTime():d.value;
ret = Math.floor(step*(datum - minValue ))
}
return Math.floor(cfg.width/2)
})
.attr("y1", function(d){
var ret;
if(cfg.horizontalLayout){
ret = Math.floor(cfg.height/2)
}
else{
var datum = (cfg.dateDimension)?new Date(d.date).getTime():d.value;
ret = Math.floor(step*(datum - minValue)) + margin
}
linePrevious.y1 = ret
return ret
})
.attr("y2", function(d){
if (linePrevious.y1 != null){
return linePrevious.y1
}
if(cfg.horizontalLayout){
return Math.floor(cfg.height/2)
}
var datum = (cfg.dateDimension)?new Date(d.date).getTime():d.value;
return Math.floor(step*(datum - minValue))
})
.style("stroke", function(d){
if(d.color != undefined){
return d.color
}
if(d.series != undefined){
if(series.indexOf(d.series) < 0){
series.push(d.series);
}
return cfg.seriesColor(series.indexOf(d.series));
}
return cfg.color})
.style("stroke-width", cfg.lineWidth);
svg.selectAll("circle")
.data(events).enter()
.append("circle")
.attr("class", "timeline-event")
.attr("r", function(d){if(d.radius != undefined){return d.radius} return cfg.radius})
.style("stroke", function(d){
if(d.color != undefined){
return d.color
}
if(d.series != undefined){
if(series.indexOf(d.series) < 0){
series.push(d.series);
}
console.log(d.series, series, series.indexOf(d.series));
return cfg.seriesColor(series.indexOf(d.series));
}
return cfg.color}
)
.style("stroke-width", function(d){if(d.lineWidth != undefined){return d.lineWidth} return cfg.lineWidth})
.style("fill", function(d){if(d.background != undefined){return d.background} return cfg.background})
.attr("cy", function(d){
if(cfg.horizontalLayout){
return Math.floor(cfg.height/2)
}
var datum = (cfg.dateDimension)?new Date(d.date).getTime():d.value;
return Math.floor(step*(datum - minValue) + margin)
})
.attr("cx", function(d){
if(cfg.horizontalLayout){
var datum = (cfg.dateDimension)?new Date(d.date).getTime():d.value;
var x= Math.floor(step*(datum - minValue) + margin);
return x;
}
return Math.floor(cfg.width/2)
}).on("mouseover", function(d, i){
if(cfg.dateDimension){
// Allow user to specify a string representing the date.
var datetime;
if (d.dateStr) {
datetime = d.dateStr;
} else {
var format = d3.time.format(cfg.dateFormat);
datetime = format(new Date(d.date));
}
var dateValue = (datetime != "")?(d.name +" <small>("+datetime+")</small>"):d.name;
}else{
var format = function(d){return d}; // TODO
var datetime = d.value;
var dateValue = d.name +" <small>("+d.value+")</small>";
}
d3.select(this)
.style("fill", function(d){if(d.color != undefined){return d.color} return cfg.color}).transition()
.duration(100).attr("r", function(d){if(d.radius != undefined){return Math.floor(d.radius*1.5)} return Math.floor(cfg.radius*1.5)});
tip.html("");
if(d.img != undefined){
tip.append("img").attr("src", d.img).attr('class', 'tooltip-img');
}
tip.append("div")
.html(dateValue)
.style("font-weight", "bold")
.style("font-size", "20px")
.style("margin-bottom", "3px");
// Append long text description.
if (d.description) {
tip.append("div")
.attr('class', 'tooltip-description')
.style("font-size", "14px")
.style("white-space", "pre-wrap") // render line breaks
.html(d.description);
}
if (d.responseDescription) {
tip.append("div")
.attr('class', 'tooltip-description')
.style("font-size", "14px")
.style("font-weight", "bold")
.style("color", "#165885")
.style("white-space", "pre-wrap") // render line breaks
.html(d.responseDescription);
}
tip.transition()
.style('z-index', '1')
.duration(100)
.style("opacity", .9);
})
.on("mouseout", function(){
d3.select(this)
.style("fill", function(d){if(d.background != undefined){return d.background} return cfg.background}).transition()
.duration(100).attr("r", function(d){if(d.radius != undefined){return d.radius} return cfg.radius});
tip.transition()
.duration(100)
.style('z-index', '-1')
.style("opacity", 0)});
//Adding start and end labels
if(cfg.showLabels != false){
if(cfg.dateDimension){
var format = d3.time.format(cfg.labelFormat);
var startString = format(new Date(minValue));
var endString = format(new Date(maxValue));
}else{
var format = function(d){return d}; //Should I do something else?
var startString = minValue;
var endString = maxValue;
}
svg.append("text")
.text(startString).attr('class', 'timeline-label')
.attr("x", function(d){if(cfg.horizontalLayout){return d3.max([0, (margin-this.getBBox().width/2)])} return Math.floor(this.getBBox().width/2)})
.attr("y", function(d){if(cfg.horizontalLayout){return Math.floor(cfg.height/2+(margin+this.getBBox().height))}return margin+this.getBBox().height/2});
svg.append("text")
.text(endString).attr('class', 'timeline-label')
.attr("x", function(d){if(cfg.horizontalLayout){return cfg.width - d3.max([this.getBBox().width, (margin+this.getBBox().width/2)])} return Math.floor(this.getBBox().width/2)})
.attr("y", function(d){if(cfg.horizontalLayout){return Math.floor(cfg.height/2+(margin+this.getBBox().height))}return cfg.height-margin+this.getBBox().height/2})
}
svg
.on("mousemove", function(){
const tipHeight = parseInt(tip.style("height").replace("px", ""));
const tipWidth = parseInt(tip.style("width").replace("px", ""));
let top;
if (cfg.tooltipDirectionY > 0) {
top = d3.event.pageY + 30;
} else {
top = d3.event.pageY - 15 - tipHeight - margin;
}
let left = d3.event.pageX;
if (left + tipWidth > cfg.width) {
left -= tipWidth;
}
return tip.style("top", top + "px").style("left", left + "px");
})
.on("mouseout", function() {
return tip.style("opacity", 0).style("top","0px").style("left","0px");
});
}
}