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309 lines
8.8 KiB
JavaScript
309 lines
8.8 KiB
JavaScript
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nv.models.linePlusBarChart = function() {
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var margin = {top: 30, right: 60, bottom: 50, left: 60},
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width = null,
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height = null,
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getX = function(d) { return d.x },
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getY = function(d) { return d.y },
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color = d3.scale.category20().range(),
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showLegend = true,
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tooltips = true,
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tooltip = function(key, x, y, e, graph) {
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return '<h3>' + key + '</h3>' +
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'<p>' + y + ' at ' + x + '</p>'
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};
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var lines = nv.models.line(),
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bars = nv.models.historicalBar(),
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x = d3.scale.linear(), // needs to be both line and historicalBar x Axis
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y1 = bars.yScale(),
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y2 = lines.yScale(),
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xAxis = nv.models.axis().scale(x).orient('bottom').tickPadding(5),
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yAxis1 = nv.models.axis().scale(y1).orient('left'),
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yAxis2 = nv.models.axis().scale(y2).orient('right'),
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legend = nv.models.legend().height(30),
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dispatch = d3.dispatch('tooltipShow', 'tooltipHide');
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var showTooltip = function(e, offsetElement) {
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var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
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top = e.pos[1] + ( offsetElement.offsetTop || 0),
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x = xAxis.tickFormat()(lines.x()(e.point)),
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y = yAxis1.tickFormat()(lines.y()(e.point)),
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content = tooltip(e.series.key, x, y, e, chart);
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nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's');
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};
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function chart(selection) {
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selection.each(function(data) {
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var container = d3.select(this),
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that = this;
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var availableWidth = (width || parseInt(container.style('width')) || 960)
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- margin.left - margin.right,
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availableHeight = (height || parseInt(container.style('height')) || 400)
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- margin.top - margin.bottom;
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var dataBars = data.filter(function(d) { return !d.disabled && d.bar });
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var dataLines = data.filter(function(d) { return !d.disabled && !d.bar });
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//TODO: try to remove x scale computation from this layer
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var series1 = data.filter(function(d) { return !d.disabled && d.bar })
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.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) }
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})
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});
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var series2 = data.filter(function(d) { return !d.disabled && !d.bar })
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.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) }
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})
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});
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x .domain(d3.extent(d3.merge(series1.concat(series2)), function(d) { return d.x } ))
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.range([0, availableWidth]);
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/*
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x .domain(d3.extent(d3.merge(data.map(function(d) { return d.values })), getX ))
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.range([0, availableWidth]);
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y1 .domain(d3.extent(d3.merge(dataBars), function(d) { return d.y } ))
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.range([availableHeight, 0]);
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y2 .domain(d3.extent(d3.merge(dataLines), function(d) { return d.y } ))
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.range([availableHeight, 0]);
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*/
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lines
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.width(availableWidth)
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.height(availableHeight)
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.color(data.map(function(d,i) {
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return d.color || color[i % color.length];
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}).filter(function(d,i) { return !data[i].disabled && !data[i].bar }))
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bars
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.width(availableWidth)
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.height(availableHeight)
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.color(data.map(function(d,i) {
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return d.color || color[i % color.length];
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}).filter(function(d,i) { return !data[i].disabled && data[i].bar }))
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var wrap = d3.select(this).selectAll('g.wrap.linePlusBar').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 linePlusBar').append('g');
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gEnter.append('g').attr('class', 'x axis');
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gEnter.append('g').attr('class', 'y1 axis');
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gEnter.append('g').attr('class', 'y2 axis');
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gEnter.append('g').attr('class', 'barsWrap');
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gEnter.append('g').attr('class', 'linesWrap');
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gEnter.append('g').attr('class', 'legendWrap');
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var g = wrap.select('g');
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if (showLegend) {
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legend.width(availableWidth);
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g.select('.legendWrap')
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.datum(data.map(function(series) {
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series.key = series.key + (series.bar ? ' (left axis)' : ' (right axis)');
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return series;
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}))
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.call(legend);
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if ( margin.top != legend.height()) {
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margin.top = legend.height();
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availableHeight = (height || parseInt(container.style('height')) || 400)
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- margin.top - margin.bottom;
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}
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g.select('.legendWrap')
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.attr('transform', 'translate(0,' + (-margin.top) +')');
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}
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var barsWrap = g.select('.barsWrap')
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.datum(dataBars.length ? dataBars : [{values:[]}])
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var linesWrap = g.select('.linesWrap')
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.datum(dataLines.length ? dataLines : [{values:[]}])
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d3.transition(barsWrap).call(bars);
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d3.transition(linesWrap).call(lines);
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g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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xAxis
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.ticks( availableWidth / 100 )
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.tickSize(-availableHeight, 0);
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g.select('.x.axis')
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.attr('transform', 'translate(0,' + y1.range()[0] + ')');
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d3.transition(g.select('.x.axis'))
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.call(xAxis);
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yAxis1
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.ticks( availableHeight / 36 )
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.tickSize(-availableWidth, 0);
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d3.transition(g.select('.y1.axis'))
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.call(yAxis1);
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yAxis2
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.ticks( availableHeight / 36 )
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.tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none
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g.select('.y2.axis')
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.attr('transform', 'translate(' + x.range()[1] + ',0)');
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d3.transition(g.select('.y2.axis'))
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.call(yAxis2);
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legend.dispatch.on('legendClick', function(d,i) {
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d.disabled = !d.disabled;
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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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wrap.selectAll('.series').classed('disabled', false);
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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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lines.dispatch.on('elementMouseover.tooltip', function(e) {
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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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if (tooltips) dispatch.on('tooltipShow', function(e) { showTooltip(e, that.parentNode) } ); // TODO: maybe merge with above?
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lines.dispatch.on('elementMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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if (tooltips) dispatch.on('tooltipHide', nv.tooltip.cleanup);
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bars.dispatch.on('elementMouseover.tooltip', function(e) {
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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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if (tooltips) dispatch.on('tooltipShow', function(e) { showTooltip(e, that.parentNode) } ); // TODO: maybe merge with above?
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bars.dispatch.on('elementMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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if (tooltips) dispatch.on('tooltipHide', nv.tooltip.cleanup);
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chart.update = function() { selection.transition().call(chart) };
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chart.container = this; // I need a reference to the container in order to have outside code check if the chart is visible or not
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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.legend = legend;
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chart.lines = lines;
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chart.bars = bars;
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chart.xAxis = xAxis;
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chart.yAxis1 = yAxis1;
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chart.yAxis2 = yAxis2;
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d3.rebind(chart, lines, 'size', 'clipVoronoi');
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//d3.rebind(chart, lines, 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
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//d3.rebind(chart, lines, 'interactive');
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//consider rebinding x and y as well
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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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lines.x(_);
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bars.x(_);
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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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lines.y(_);
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bars.y(_);
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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 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.color = function(_) {
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if (!arguments.length) return color;
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color = _;
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legend.color(_);
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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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chart.tooltips = function(_) {
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if (!arguments.length) return tooltips;
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tooltips = _;
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return chart;
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};
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chart.tooltipContent = function(_) {
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if (!arguments.length) return tooltip;
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tooltip = _;
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return chart;
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};
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return chart;
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}
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