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298 lines
8.6 KiB
JavaScript
298 lines
8.6 KiB
JavaScript
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nv.models.stackedAreaWithLegend = function() {
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var margin = {top: 30, right: 20, bottom: 50, left: 60},
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getWidth = function() { return 960 },
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getHeight = function() { return 500 },
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color = d3.scale.category20().range(),
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showControls = true,
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showLegend = true;
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var x = d3.scale.linear(),
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y = d3.scale.linear(),
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getX = function(d) { return d.x },
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getY = function(d) { return d.y },
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xAxis = nv.models.axis().scale(x).orient('bottom'),
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yAxis = nv.models.axis().scale(y).orient('left'),
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legend = nv.models.legend().height(30),
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controls = nv.models.legend().height(30),
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stacked = nv.models.stackedArea(),
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dispatch = d3.dispatch('tooltipShow', 'tooltipHide');
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//TODO: let user select default
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var controlsData = [
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{ key: 'Stacked' },
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{ key: 'Stream', disabled: true },
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{ key: 'Expanded', disabled: true }
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];
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function chart(selection) {
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selection.each(function(data) {
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var width = getWidth(),
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height = getHeight(),
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availableWidth = width - margin.left - margin.right,
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availableHeight = height - margin.top - margin.bottom;
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var seriesData = data.filter(function(d) { return !d.disabled })
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.reduce(function(prev, curr, index) { //sum up all the y's
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curr.values.forEach(function(d,i) {
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if (!index) prev[i] = {x: getX(d,i), y:0};
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prev[i].y += getY(d,i);
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});
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return prev;
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}, []);
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x .domain(d3.extent(d3.merge(seriesData), function(d) { return d.x } ))
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.range([0, availableWidth]);
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y .domain(stacked.offset() == 'zero' ?
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[0, d3.max(seriesData, function(d) { return d.y } )] :
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[0, 1] // 0 - 100%
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)
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.range([availableHeight, 0]);
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stacked
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.width(availableWidth)
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.height(availableHeight)
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//.color(color)
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.color(data.map(function(d,i) {
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return d.color || color[i % 20];
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}).filter(function(d,i) { return !data[i].disabled }))
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var wrap = d3.select(this).selectAll('g.wrap.stackedAreaWithLegend').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 stackedAreaWithLegend').append('g');
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gEnter.append('g').attr('class', 'x axis');
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gEnter.append('g').attr('class', 'y axis');
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gEnter.append('g').attr('class', 'stackedWrap');
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gEnter.append('g').attr('class', 'legendWrap');
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gEnter.append('g').attr('class', 'controlsWrap');
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var g = wrap.select('g');
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if (showLegend) {
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//TODO: margins should be adjusted based on what components are used: axes, axis labels, legend
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margin.top = legend.height();
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legend
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.width(width/2 - margin.right)
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.color(color);
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g.select('.legendWrap')
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.datum(data)
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.attr('transform', 'translate(' + (width/2 - margin.left) + ',' + (-margin.top) +')')
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.call(legend);
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}
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if (showControls) {
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controls.width(280).color(['#444', '#444', '#444']);
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g.select('.controlsWrap')
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.datum(controlsData)
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.attr('transform', 'translate(0,' + (-margin.top) +')')
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.call(controls);
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}
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g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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var stackedWrap = g.select('.stackedWrap')
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.datum(data);
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d3.transition(stackedWrap).call(stacked);
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xAxis
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.domain(x.domain())
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.range(x.range())
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.ticks( width / 100 )
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.tickSize(-availableHeight, 0);
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g.select('.x.axis')
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.attr('transform', 'translate(0,' + availableHeight + ')');
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d3.transition(g.select('.x.axis'))
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.call(xAxis);
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yAxis
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.domain(y.domain())
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.range(y.range())
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.ticks(stacked.offset() == 'wiggle' ? 0 : height / 36)
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.tickSize(-availableWidth, 0)
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.tickFormat(stacked.offset() == 'zero' ? d3.format(',.2f') : d3.format('%')); //TODO: stacked format should be set by caller
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d3.transition(g.select('.y.axis'))
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.call(yAxis);
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//TODO: FIX Logic error, screws up when series are disabled by clicking legend, then series are desiabled by clicking the area
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stacked.dispatch.on('areaClick.toggle', function(e) {
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if (data.filter(function(d) { return !d.disabled }).length === 1)
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data = data.map(function(d) {
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if (d.disabled)
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d.values.map(function(p) { p.y = p._y || p.y; return p }); // ....
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d.disabled = false;
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return d
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});
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else
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data = data.map(function(d,i) {
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if (!d.disabled && i !== e.seriesIndex)
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d.values.map(function(p) { p._y = p.y; p.y = 0; return p }); //TODO: need to use value from getY, not always d.y
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if (d.disabled && i === e.seriesIndex)
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d.values.map(function(p) { p.y = p._y || p.y; return p }); // ....
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d.disabled = (i != e.seriesIndex);
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return d
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});
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selection.transition().call(chart);
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});
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legend.dispatch.on('legendClick', function(d,i) {
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d.disabled = !d.disabled;
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if (d.disabled)
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d.values.map(function(p) { p._y = p.y; p.y = 0; return p }); //TODO: need to use value from getY, not always d.y
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else
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d.values.map(function(p) { p.y = p._y; return p }); // ....
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if (!data.filter(function(d) { return !d.disabled }).length) {
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data.map(function(d) {
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d.disabled = false;
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d.values.map(function(p) { p.y = p._y; return p }); // ....
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return d;
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});
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}
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selection.transition().call(chart);
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});
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controls.dispatch.on('legendClick', function(d,i) {
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if (!d.disabled) return;
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controlsData = controlsData.map(function(s) {
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s.disabled = true;
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return s;
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});
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d.disabled = false;
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switch (d.key) {
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case 'Stacked':
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stacked.style('stack');
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break;
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case 'Stream':
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stacked.style('stream');
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break;
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case 'Expanded':
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stacked.style('expand');
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break;
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}
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selection.transition().call(chart);
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});
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/*
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legend.dispatch.on('legendMouseover', function(d, i) {
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d.hover = true;
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selection.transition().call(chart)
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});
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legend.dispatch.on('legendMouseout', function(d, i) {
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d.hover = false;
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selection.transition().call(chart)
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});
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*/
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stacked.dispatch.on('tooltipShow', function(e) {
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//disable tooltips when value ~= 0
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//// TODO: consider removing points from voronoi that have 0 value instead of this hack
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if (!Math.round(getY(e.point) * 100)) { // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
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setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
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return false;
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}
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e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
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dispatch.tooltipShow(e);
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});
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stacked.dispatch.on('tooltipHide', function(e) {
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dispatch.tooltipHide(e);
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});
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});
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/*
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// If the legend changed the margin's height, need to recalc positions... should think of a better way to prevent duplicate work
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if (margin.top != legend.height())
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chart(selection);
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*/
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return chart;
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}
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chart.dispatch = dispatch;
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chart.stacked = stacked;
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chart.xAxis = xAxis;
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chart.yAxis = yAxis;
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d3.rebind(chart, stacked, 'interactive', 'offset', 'order', 'style', 'clipEdge', 'size', 'forceX', 'forceY', 'forceSize');
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chart.x = function(_) {
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if (!arguments.length) return getX;
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getX = d3.functor(_); //not used locally, so could jsut be a rebind
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stacked.x(getX);
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return chart;
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};
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chart.y = function(_) {
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if (!arguments.length) return getY;
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getY = d3.functor(_);
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stacked.y(getY);
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return chart;
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};
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chart.margin = function(_) {
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if (!arguments.length) return margin;
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margin = _;
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return chart;
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};
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chart.width = function(_) {
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if (!arguments.length) return getWidth;
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getWidth = d3.functor(_);
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return chart;
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};
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chart.height = function(_) {
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if (!arguments.length) return getHeight;
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getHeight = d3.functor(_);
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return chart;
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};
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chart.showControls = function(_) {
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if (!arguments.length) return showControls;
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showControls = _;
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return chart;
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};
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chart.showLegend = function(_) {
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if (!arguments.length) return showLegend;
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showLegend = _;
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return chart;
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};
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return chart;
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}
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