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330 lines
9.9 KiB
JavaScript
330 lines
9.9 KiB
JavaScript
//TODO: consider deprecating and using multibar with single series for this
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nv.models.historicalBar = 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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, id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
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, 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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, forceX = []
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, forceY = [0]
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, padData = false
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, clipEdge = true
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, color = nv.utils.defaultColor()
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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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, interactive = true
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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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//------------------------------------------------------------
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// Setup Scales
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x .domain(xDomain || d3.extent(data[0].values.map(getX).concat(forceX) ))
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if (padData)
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x.range(xRange || [availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5) / data[0].values.length ]);
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else
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x.range(xRange || [0, availableWidth]);
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y .domain(yDomain || d3.extent(data[0].values.map(getY).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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//------------------------------------------------------------
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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-historicalBar-' + id).data([data[0].values]);
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var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-historicalBar-' + id);
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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-bars');
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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//------------------------------------------------------------
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container
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.on('click', function(d,i) {
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dispatch.chartClick({
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data: d,
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index: i,
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pos: d3.event,
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id: id
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});
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});
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defsEnter.append('clipPath')
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.attr('id', 'nv-chart-clip-path-' + id)
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.append('rect');
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wrap.select('#nv-chart-clip-path-' + 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-chart-clip-path-' + id + ')' : '');
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var bars = wrap.select('.nv-bars').selectAll('.nv-bar')
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.data(function(d) { return d }, function(d,i) {return getX(d,i)});
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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,j) { return (getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive') + ' nv-bar-' + j + '-' + i })
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.attr('x', 0 )
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.attr('y', function(d,i) { return nv.utils.NaNtoZero(y(Math.max(0, getY(d,i)))) })
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.attr('height', function(d,i) { return nv.utils.NaNtoZero(Math.abs(y(getY(d,i)) - y(0))) })
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.attr('transform', function(d,i) { return 'translate(' + (x(getX(d,i)) - availableWidth / data[0].values.length * .45) + ',0)'; })
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.on('mouseover', function(d,i) {
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if (!interactive) return;
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d3.select(this).classed('hover', true);
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dispatch.elementMouseover({
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point: d,
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series: data[0],
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pos: [x(getX(d,i)), y(getY(d,i))], // TODO: Figure out why the value appears to be shifted
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pointIndex: i,
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seriesIndex: 0,
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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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if (!interactive) return;
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d3.select(this).classed('hover', false);
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dispatch.elementMouseout({
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point: d,
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series: data[0],
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pointIndex: i,
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seriesIndex: 0,
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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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if (!interactive) return;
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dispatch.elementClick({
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//label: d[label],
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value: getY(d,i),
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data: d,
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index: i,
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pos: [x(getX(d,i)), y(getY(d,i))],
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e: d3.event,
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id: id
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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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if (!interactive) return;
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dispatch.elementDblClick({
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//label: d[label],
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value: getY(d,i),
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data: d,
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index: i,
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pos: [x(getX(d,i)), y(getY(d,i))],
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e: d3.event,
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id: id
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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('fill', function(d,i) { return color(d, i); })
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.attr('class', function(d,i,j) { return (getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive') + ' nv-bar-' + j + '-' + i })
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.transition()
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.attr('transform', function(d,i) { return 'translate(' + (x(getX(d,i)) - availableWidth / data[0].values.length * .45) + ',0)'; })
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//TODO: better width calculations that don't assume always uniform data spacing;w
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.attr('width', (availableWidth / data[0].values.length) * .9 );
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bars.transition()
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.attr('y', function(d,i) {
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var rval = 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));
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return nv.utils.NaNtoZero(rval);
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})
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.attr('height', function(d,i) { return nv.utils.NaNtoZero(Math.max(Math.abs(y(getY(d,i)) - y(0)),1)) });
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});
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return chart;
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}
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//Create methods to allow outside functions to highlight a specific bar.
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chart.highlightPoint = function(pointIndex, isHoverOver) {
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d3.select(".nv-historicalBar-" + id)
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.select(".nv-bars .nv-bar-0-" + pointIndex)
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.classed("hover", isHoverOver)
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;
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};
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chart.clearHighlights = function() {
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d3.select(".nv-historicalBar-" + id)
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.select(".nv-bars .nv-bar.hover")
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.classed("hover", false)
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;
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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.forceX = function(_) {
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if (!arguments.length) return forceX;
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forceX = _;
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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.padData = function(_) {
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if (!arguments.length) return padData;
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padData = _;
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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.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.interactive = function(_) {
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if(!arguments.length) return interactive;
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interactive = false;
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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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