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465 lines
15 KiB
JavaScript
465 lines
15 KiB
JavaScript
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nv.models.multiBar = function() {
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"use strict";
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//============================================================
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// Public Variables with Default Settings
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//------------------------------------------------------------
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var margin = {top: 0, right: 0, bottom: 0, left: 0}
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, width = 960
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, height = 500
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, x = d3.scale.ordinal()
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, y = d3.scale.linear()
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, id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
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, getX = function(d) { return d.x }
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, getY = function(d) { return d.y }
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, forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
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, clipEdge = true
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, stacked = false
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, color = nv.utils.defaultColor()
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, hideable = false
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, barColor = null // adding the ability to set the color for each rather than the whole group
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, disabled // used in conjunction with barColor to communicate from multiBarHorizontalChart what series are disabled
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, delay = 1200
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, xDomain
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, yDomain
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, xRange
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, yRange
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, dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
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, transitionDuration = 250
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;
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//============================================================
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//============================================================
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// Private Variables
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//------------------------------------------------------------
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var x0, y0 //used to store previous scales
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;
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//============================================================
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function chart(selection) {
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selection.each(function(data) {
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var availableWidth = width - margin.left - margin.right,
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availableHeight = height - margin.top - margin.bottom,
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container = d3.select(this);
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if(hideable && data.length) hideable = [{
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values: data[0].values.map(function(d) {
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return {
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x: d.x,
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y: 0,
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series: d.series,
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size: 0.01
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};}
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)}];
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if (stacked)
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data = d3.layout.stack()
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.offset('zero')
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.values(function(d){ return d.values })
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.y(getY)
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(!data.length && hideable ? hideable : data);
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//add series index to each data point for reference
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data = data.map(function(series, i) {
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series.values = series.values.map(function(point) {
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point.series = i;
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return point;
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});
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return series;
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});
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//------------------------------------------------------------
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// HACK for negative value stacking
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if (stacked)
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data[0].values.map(function(d,i) {
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var posBase = 0, negBase = 0;
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data.map(function(d) {
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var f = d.values[i]
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f.size = Math.abs(f.y);
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if (f.y<0) {
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f.y1 = negBase;
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negBase = negBase - f.size;
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} else
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{
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f.y1 = f.size + posBase;
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posBase = posBase + f.size;
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}
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});
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});
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//------------------------------------------------------------
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// Setup Scales
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// remap and flatten the data for use in calculating the scales' domains
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var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
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data.map(function(d) {
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return d.values.map(function(d,i) {
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return { x: getX(d,i), y: getY(d,i), y0: d.y0, y1: d.y1 }
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})
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});
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x .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
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.rangeBands(xRange || [0, availableWidth], .1);
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//y .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y + (stacked ? d.y1 : 0) }).concat(forceY)))
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y .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return stacked ? (d.y > 0 ? d.y1 : d.y1 + d.y ) : d.y }).concat(forceY)))
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.range(yRange || [availableHeight, 0]);
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// If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
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if (x.domain()[0] === x.domain()[1])
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x.domain()[0] ?
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x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
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: x.domain([-1,1]);
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if (y.domain()[0] === y.domain()[1])
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y.domain()[0] ?
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y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
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: y.domain([-1,1]);
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x0 = x0 || x;
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y0 = y0 || y;
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup containers and skeleton of chart
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var wrap = container.selectAll('g.nv-wrap.nv-multibar').data([data]);
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var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multibar');
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var defsEnter = wrapEnter.append('defs');
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var gEnter = wrapEnter.append('g');
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var g = wrap.select('g')
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gEnter.append('g').attr('class', 'nv-groups');
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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//------------------------------------------------------------
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defsEnter.append('clipPath')
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.attr('id', 'nv-edge-clip-' + id)
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.append('rect');
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wrap.select('#nv-edge-clip-' + id + ' rect')
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.attr('width', availableWidth)
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.attr('height', availableHeight);
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g .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');
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var groups = wrap.select('.nv-groups').selectAll('.nv-group')
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.data(function(d) { return d }, function(d) { return d.key });
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groups.enter().append('g')
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.style('stroke-opacity', 1e-6)
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.style('fill-opacity', 1e-6);
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groups.exit()
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.transition().duration(transitionDuration)
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//.style('stroke-opacity', 1e-6)
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//.style('fill-opacity', 1e-6)
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.selectAll('rect.nv-bar')
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.delay(function(d,i) {
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if (transitionDuration <= 10) return 0;
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else
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return i * delay/ data[0].values.length;
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})
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.attr('y', function(d) { return stacked ? y0(d.y0) : y0(0) })
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.attr('height', 0)
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.remove();
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groups
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.attr('class', function(d,i) { return 'nv-group nv-series-' + i })
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.classed('hover', function(d) { return d.hover })
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.style('fill', function(d,i){ return color(d, i) })
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.style('stroke', function(d,i){ return color(d, i) });
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groups
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.transition().duration(transitionDuration)
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.style('stroke-opacity', 1)
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.style('fill-opacity', .75);
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var bars = groups.selectAll('rect.nv-bar')
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.data(function(d) { return (hideable && !data.length) ? hideable.values : d.values });
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bars.exit().remove();
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var barsEnter = bars.enter().append('rect')
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.attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
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.attr('x', function(d,i,j) {
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return stacked ? 0 : (j * x.rangeBand() / data.length )
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})
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.attr('y', function(d) { return y0(stacked ? d.y0 : 0) })
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.attr('height', 0)
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.attr('width', x.rangeBand() / (stacked ? 1 : data.length) );
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bars
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.style('fill', function(d,i,j){ return color(d, j, i); })
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.style('stroke', function(d,i,j){ return color(d, j, i); })
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.on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
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d3.select(this).classed('hover', true);
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dispatch.elementMouseover({
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value: getY(d,i),
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point: d,
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series: data[d.series],
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pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))], // TODO: Figure out why the value appears to be shifted
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pointIndex: i,
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seriesIndex: d.series,
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e: d3.event
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});
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})
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.on('mouseout', function(d,i) {
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d3.select(this).classed('hover', false);
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dispatch.elementMouseout({
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value: getY(d,i),
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point: d,
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series: data[d.series],
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pointIndex: i,
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seriesIndex: d.series,
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e: d3.event
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});
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})
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.on('click', function(d,i) {
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dispatch.elementClick({
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value: getY(d,i),
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point: d,
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series: data[d.series],
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pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))], // TODO: Figure out why the value appears to be shifted
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pointIndex: i,
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seriesIndex: d.series,
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e: d3.event
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});
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d3.event.stopPropagation();
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})
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.on('dblclick', function(d,i) {
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dispatch.elementDblClick({
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value: getY(d,i),
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point: d,
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series: data[d.series],
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pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))], // TODO: Figure out why the value appears to be shifted
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pointIndex: i,
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seriesIndex: d.series,
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e: d3.event
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});
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d3.event.stopPropagation();
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});
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bars
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.attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
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.attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',0)'; })
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if (barColor) {
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if (!disabled) disabled = data.map(function() { return true });
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bars
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//.style('fill', barColor)
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//.style('stroke', barColor)
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//.style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(j).toString(); })
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//.style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(j).toString(); })
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.style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker( disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i] })[j] ).toString(); })
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.style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker( disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i] })[j] ).toString(); });
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}
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if (stacked)
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bars.transition()
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.duration(transitionDuration)
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.delay(function(d,i) {
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if (transitionDuration <= 10) return 0;
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else
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return i * delay / data[0].values.length;
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})
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.attr('y', function(d,i) {
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return y((stacked ? d.y1 : 0));
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})
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.attr('height', function(d,i) {
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return Math.max(Math.abs(y(d.y + (stacked ? d.y0 : 0)) - y((stacked ? d.y0 : 0))),1);
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})
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.attr('x', function(d,i) {
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return stacked ? 0 : (d.series * x.rangeBand() / data.length )
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})
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.attr('width', x.rangeBand() / (stacked ? 1 : data.length) );
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else
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bars.transition()
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.duration(transitionDuration)
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.delay(function(d,i) {
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if (transitionDuration <= 10) return 0;
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else
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return i * delay/ data[0].values.length;
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})
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.attr('x', function(d,i) {
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return d.series * x.rangeBand() / data.length
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})
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.attr('width', x.rangeBand() / data.length)
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.attr('y', function(d,i) {
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return getY(d,i) < 0 ?
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y(0) :
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y(0) - y(getY(d,i)) < 1 ?
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y(0) - 1 :
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y(getY(d,i)) || 0;
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})
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.attr('height', function(d,i) {
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return Math.max(Math.abs(y(getY(d,i)) - y(0)),1) || 0;
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});
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//store old scales for use in transitions on update
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x0 = x.copy();
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y0 = y.copy();
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});
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return chart;
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}
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//============================================================
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// Expose Public Variables
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//------------------------------------------------------------
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chart.dispatch = dispatch;
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chart.x = function(_) {
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if (!arguments.length) return getX;
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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 = _;
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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.top = typeof _.top != 'undefined' ? _.top : margin.top;
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margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
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margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
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margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
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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 width;
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width = _;
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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 height;
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height = _;
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return chart;
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};
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chart.xScale = function(_) {
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if (!arguments.length) return x;
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x = _;
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return chart;
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};
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chart.yScale = function(_) {
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if (!arguments.length) return y;
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y = _;
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return chart;
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};
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chart.xDomain = function(_) {
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if (!arguments.length) return xDomain;
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xDomain = _;
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return chart;
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};
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chart.yDomain = function(_) {
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if (!arguments.length) return yDomain;
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yDomain = _;
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return chart;
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};
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chart.xRange = function(_) {
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if (!arguments.length) return xRange;
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xRange = _;
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return chart;
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};
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chart.yRange = function(_) {
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if (!arguments.length) return yRange;
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yRange = _;
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return chart;
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};
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chart.forceY = function(_) {
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if (!arguments.length) return forceY;
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forceY = _;
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return chart;
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};
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chart.stacked = function(_) {
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if (!arguments.length) return stacked;
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stacked = _;
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return chart;
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};
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chart.clipEdge = function(_) {
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if (!arguments.length) return clipEdge;
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clipEdge = _;
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return chart;
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};
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chart.color = function(_) {
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if (!arguments.length) return color;
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color = nv.utils.getColor(_);
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return chart;
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};
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chart.barColor = function(_) {
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if (!arguments.length) return barColor;
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barColor = nv.utils.getColor(_);
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return chart;
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};
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chart.disabled = function(_) {
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if (!arguments.length) return disabled;
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disabled = _;
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return chart;
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};
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chart.id = function(_) {
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if (!arguments.length) return id;
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id = _;
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return chart;
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};
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chart.hideable = function(_) {
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if (!arguments.length) return hideable;
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hideable = _;
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return chart;
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};
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chart.delay = function(_) {
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if (!arguments.length) return delay;
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delay = _;
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return chart;
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};
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chart.transitionDuration = function(_) {
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if (!arguments.length) return transitionDuration;
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transitionDuration = _;
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return chart;
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};
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//============================================================
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return chart;
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}
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