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D3_V4_Gantt_Chart.html
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<html>
<head>
<title>Swimlane using d3.js</title>
<script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
<script type="text/javascript" >
(function() {
"use strict";
var RandomData = function() {
var addToLane = function (chart, item) {
var name = item.lane;
if (!chart.lanes[name])
chart.lanes[name] = [];
var lane = chart.lanes[name];
var sublane = 0;
while(isOverlapping(item, lane[sublane]))
sublane++;
if (!lane[sublane]) {
lane[sublane] = [];
}
lane[sublane].push(item);
};
var isOverlapping = function(item, lane) {
if (lane) {
for (var i = 0; i < lane.length; i++) {
var t = lane[i];
if (item.start < t.end && item.end > t.start) {
return true;
}
}
}
return false;
};
var parseData = function (data) {
var i = 0, length = data.length, node;
chart = { lanes: {} };
for (i; i < length; i++) {
var item = data[i];
addToLane(chart, item);
}
return collapseLanes(chart);
};
var collapseLanes = function (chart) {
var lanes = [], items = [], laneId = 0;
var now = new Date();
for (var laneName in chart.lanes) {
var lane = chart.lanes[laneName];
for (var i = 0; i < lane.length; i++) {
var subLane = lane[i];
lanes.push({
id: laneId,
label: i === 0 ? laneName : ''
});
for (var j = 0; j < subLane.length; j++) {
var item = subLane[j];
items.push({
id: item.id,
lane: laneId,
start: item.start,
end: item.end,
class: item.end > now ? 'future' : 'past',
desc: item.desc
});
}
laneId++;
}
}
return {lanes: lanes, items: items};
}
var randomNumber = function(min, max) {
return Math.floor(Math.random(0, 1) * (max - min)) + min;
};
var generateRandomWorkItems = function () {
var data = [];
var laneCount = randomNumber(5,7)
, totalWorkItems = randomNumber(20,30)
, startMonth = randomNumber(3,10)
, startDay = randomNumber(1,28)
, totalMonths = randomNumber(4,10);
for (var i = 0; i < laneCount; i++) {
var dt = new Date(2018, startMonth, startDay);
for (var j = 0; j < totalWorkItems; j++) {
var dtS = new Date(dt.getFullYear(), dt.getMonth(), dt.getDate() + randomNumber(1,5), randomNumber(8, 16), 0, 0);
var dateOffset = randomNumber(0,7);
var dt = new Date(dtS.getFullYear(), dtS.getMonth(), dtS.getDate() + dateOffset, randomNumber(dateOffset === 0 ? dtS.getHours() + 2 : 8, 18), 0, 0);
var workItem = {
id: i * totalWorkItems + j,
name: 'work item ' + j,
lane: 'lane ' + i,
start: dtS,
end: dt,
desc: 'This is a description.'
};
data.push(workItem);
}
}
return data;
};
return parseData(generateRandomWorkItems());
};
/**
* Allow library to be used within both the browser and node.js
*/
var root = typeof exports !== "undefined" && exports !== null ? exports : window;
root.randomData = RandomData;
}).call(this);
</script>
<style>
.chart {
shape-rendering: crispEdges;
}
.mini text {
font: 9px sans-serif;
}
.main text {
font: 12px sans-serif;
}
.month text {
text-anchor: start;
}
.todayLine {
stroke: blue;
stroke-width: 1.5;
}
.axis line, .axis path {
stroke: black;
}
.miniItem {
stroke-width: 6;
}
.future {
stroke: gray;
fill: #ddd;
}
.past {
stroke: green;
fill: lightgreen;
}
.brush .extent {
stroke: gray;
fill: blue;
fill-opacity: .165;
}
</style>
</head>
<body>
<script type="text/javascript">
var data = randomData()
, lanes = data.lanes
, items = data.items
, now = new Date();
var margin = {top: 20, right: 15, bottom: 15, left: 60}
, width = 960 - margin.left - margin.right
, height = 500 - margin.top - margin.bottom
, miniHeight = lanes.length * 12 + 50
, mainHeight = height - miniHeight - 50;
var x = d3.scaleTime()
.domain([d3.timeSunday(d3.min(items, function(d) { return d.start; })),
d3.max(items, function(d) { return d.end; })])
.rangeRound([0, width]).clamp(true);;
var x1 = d3.scaleTime().rangeRound([0, width]).clamp(true);;
var ext = d3.extent(lanes, function(d) { return d.id; });
var y1 = d3.scaleLinear().domain([ext[0], ext[1] + 1]).range([0, mainHeight]);
var y2 = d3.scaleLinear().domain([ext[0], ext[1] + 1]).range([0, miniHeight]);
var chart = d3.select('body')
.append('svg:svg')
.attr('width', width + margin.right + margin.left)
.attr('height', height + margin.top + margin.bottom)
.attr('class', 'chart');
chart.append('defs').append('clipPath')
.attr('id', 'clip')
.append('rect')
.attr('width', width)
.attr('height', mainHeight);
var main = chart.append('g')
.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
.attr('width', width)
.attr('height', mainHeight)
.attr('class', 'main');
var mini = chart.append('g')
.attr('transform', 'translate(' + margin.left + ',' + (mainHeight + 60) + ')')
.attr('width', width)
.attr('height', miniHeight)
.attr('class', 'mini');
// draw the lanes for the main chart
main.append('g').selectAll('.laneLines')
.data(lanes)
.enter().append('line')
.attr('x1', 0)
.attr('y1', function(d) { return d3.format(".1f")((y1(d.id)) + 0.5); })
.attr('x2', width)
.attr('y2', function(d) { return d3.format(".1f")((y1(d.id)) + 0.5); })
.attr('stroke', function(d) { return d.label === '' ? 'white' : 'lightgray' });
main.append('g').selectAll('.laneText')
.data(lanes)
.enter().append('text')
.text(function(d) { return d.label; })
.attr('x', -10)
.attr('y', function(d) { return y1(d.id + .5); })
.attr('dy', '0.5ex')
.attr('text-anchor', 'end')
.attr('class', 'laneText');
// draw the lanes for the mini chart
mini.append('g').selectAll('.laneLines')
.data(lanes)
.enter().append('line')
.attr('x1', 0)
.attr('y1', function(d) { return d3.format(".1f")((y2(d.id)) + 0.5); })
.attr('x2', width)
.attr('y2', function(d) { return d3.format(".1f")((y2(d.id)) + 0.5); })
.attr('stroke', function(d) { return d.label === '' ? 'white' : 'lightgray' });
mini.append('g').selectAll('.laneText')
.data(lanes)
.enter().append('text')
.text(function(d) { return d.label; })
.attr('x', -10)
.attr('y', function(d) { return y2(d.id + .5); })
.attr('dy', '0.5ex')
.attr('text-anchor', 'end')
.attr('class', 'laneText');
// draw the x axis
var xDateAxis = d3.axisBottom(x)
.tickArguments(d3.timeMondays, (x.domain()[1] - x.domain()[0]) > 15552e6 ? 2 : 1)
.tickFormat(d3.timeFormat('%d'))
.tickSize(6);
var x1DateAxis = d3.axisBottom(x1)
.tickArguments(d3.timeDays,1)
.tickFormat(d3.timeFormat('%a %d'))
.tickSize(6);
var xMonthAxis = d3.axisTop(x)
.tickArguments(d3.timeMonths, 1)
.tickFormat(d3.timeFormat('%b %Y'))
.tickSize(15);
var x1MonthAxis = d3.axisTop(x1)
.tickArguments(d3.timeMondays, 1)
.tickFormat(d3.timeFormat('%b - Week %W'))
.tickSize(15);
main.append('g')
.attr('transform', 'translate(0,' + mainHeight + ')')
.attr('class', 'main axis date')
.call(x1DateAxis);
main.append('g')
.attr('transform', 'translate(0,0.5)')
.attr('class', 'main axis month')
.call(x1MonthAxis)
.selectAll('text')
.attr('dx', 5)
.attr('dy', 12);
mini.append('g')
.attr('transform', 'translate(0,' + miniHeight + ')')
.attr('class', 'axis date')
.call(xDateAxis);
mini.append('g')
.attr('transform', 'translate(0,0.5)')
.attr('class', 'axis month')
.call(xMonthAxis)
.selectAll('text')
.attr('dx', 5)
.attr('dy', 12);
// draw a line representing today's date
main.append('line')
.attr('y1', 0)
.attr('y2', mainHeight)
.attr('class', 'main todayLine')
.attr('clip-path', 'url(#clip)');
mini.append('line')
.attr('x1', x(now) + 0.5)
.attr('y1', 0)
.attr('x2', x(now) + 0.5)
.attr('y2', miniHeight)
.attr('class', 'todayLine');
// draw the items
var itemRects = main.append('g')
.attr('clip-path', 'url(#clip)');
mini.append('g').selectAll('miniItems')
.data(getPaths(items))
.enter().append('path')
.attr('class', function(d) { return 'miniItem ' + d.class; })
.attr('d', function(d) { return d.path; });
// invisible hit area to move around the selection window
mini.append('rect')
.attr('pointer-events', 'painted')
.attr('width', width)
.attr('height', miniHeight)
.attr('visibility', 'hidden')
.on('mouseup', moveBrush);
// draw the selection area
var brush = d3.brushX()
.extent([[0,0], [width, miniHeight]])
.on("end", display);
mini.append('g')
.attr('class', 'x brush')
.call(brush)
.call(brush.move, [d3.timeMonday(now),d3.timeSaturday.ceil(now)].map(x))
display();
function display () {
//if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom
var s ;
if(d3.event === null)
s = x.range();
else
s = d3.event.selection || x.range();
console.log(s.map(x.invert, x))
var rects, labels
, minExtent = d3.timeDay(s.map(x.invert, x)[0])
, maxExtent = d3.timeDay(s.map(x.invert, x)[1])
, visItems = items.filter(function (d) { return d.start < maxExtent && d.end > minExtent});
//mini.select('.brush').call(brush.extent([minExtent, maxExtent]));
x1.domain([minExtent, maxExtent]);
if ((maxExtent - minExtent) > 1468800000) {
x1DateAxis.tickArguments(d3.timeMondays, 1).tickFormat(d3.timeFormat('%a %d'))
x1MonthAxis.tickArguments(d3.timeMondays, 1).tickFormat(d3.timeFormat('%b - Week %W'))
}
else if ((maxExtent - minExtent) > 172800000) {
x1DateAxis.tickArguments(d3.timeDays, 1).tickFormat(d3.timeFormat('%a %d'))
x1MonthAxis.tickArguments(d3.timeMondays, 1).tickFormat(d3.timeFormat('%b - Week %W'))
}
else {
x1DateAxis.tickArguments(d3.timeHours, 4).tickFormat(d3.timeFormat('%I %p'))
x1MonthAxis.tickArguments(d3.timeDays, 1).tickFormat(d3.timeFormat('%b %e'))
}
//x1Offset.range([0, x1(d3.time.day.ceil(now) - x1(d3.time.day.floor(now)))]);
// shift the today line
main.select('.main.todayLine')
.attr('x1', x1(now) + 0.5)
.attr('x2', x1(now) + 0.5);
// update the axis
main.select('.main.axis.date').call(x1DateAxis);
main.select('.main.axis.month').call(x1MonthAxis)
.selectAll('text')
.attr('dx', 5)
.attr('dy', 12);
// upate the item rects
rects = itemRects.selectAll('rect')
.data(visItems, function (d) { return d.id; })
.attr('x', function(d) { return x1(d.start); })
.attr('width', function(d) { return x1(d.end) - x1(d.start); });
rects.enter().append('rect')
.attr('x', function(d) { return x1(d.start); })
.attr('y', function(d) { return y1(d.lane) + .1 * y1(1) + 0.5; })
.attr('width', function(d) { return x1(d.end) - x1(d.start); })
.attr('height', function(d) { return .8 * y1(1); })
.attr('class', function(d) { return 'mainItem ' + d.class; });
rects.exit().remove();
// update the item labels
labels = itemRects.selectAll('text')
.data(visItems, function (d) { return d.id; })
.attr('x', function(d) { return x1(Math.max(d.start, minExtent)) + 2; });
labels.enter().append('text')
.text(function (d) { return 'Item\n\n\n\n Id: ' + d.id; })
.attr('x', function(d) { return x1(Math.max(d.start, minExtent)) + 2; })
.attr('y', function(d) { return y1(d.lane) + .4 * y1(1) + 0.5; })
.attr('text-anchor', 'start')
.attr('class', 'itemLabel');
labels.exit().remove();
/*d3.select('.overlay')
.attr('width', 800)
.attr('height', 100).attr('x', 0)
.attr('y',0);*/
}
function moveBrush () {
//if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom
var s ;
if(d3.event === null)
s = x.range();
else
s = d3.event.selection || x.range();
var origin = d3.mouse(this)
, point = x.invert(origin[0])
, halfExtent = (s.map(x.invert, x)[1].getTime() - s.map(x.invert, x)[0].getTime()) / 2
, start = new Date(point.getTime() - halfExtent)
, end = new Date(point.getTime() + halfExtent);
display();
}
// generates a single path for each item class in the mini display
// ugly - but draws mini 2x faster than append lines or line generator
// is there a better way to do a bunch of lines as a single path with d3?
function getPaths(items) {
var paths = {}, d, offset = .5 * y2(1) + 0.5, result = [];
for (var i = 0; i < items.length; i++) {
d = items[i];
if (!paths[d.class]) paths[d.class] = '';
paths[d.class] += ['M',x(d.start),(y2(d.lane) + offset),'H',x(d.end)].join(' ');
}
for (var className in paths) {
result.push({class: className, path: paths[className]});
}
return result;
}
</script>
</body>
</html>