--- /dev/null
+
+nv.models.multiBarChart = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var multibar = nv.models.multiBar()
+ , xAxis = nv.models.axis()
+ , yAxis = nv.models.axis()
+ , legend = nv.models.legend()
+ , controls = nv.models.legend()
+ ;
+
+ var margin = {top: 30, right: 20, bottom: 50, left: 60}
+ , width = null
+ , height = null
+ , color = nv.utils.defaultColor()
+ , showControls = true
+ , showLegend = true
+ , showXAxis = true
+ , showYAxis = true
+ , rightAlignYAxis = false
+ , reduceXTicks = true // if false a tick will show for every data point
+ , staggerLabels = false
+ , rotateLabels = 0
+ , tooltips = true
+ , tooltip = function(key, x, y, e, graph) {
+ return '<h3>' + key + '</h3>' +
+ '<p>' + y + ' on ' + x + '</p>'
+ }
+ , x //can be accessed via chart.xScale()
+ , y //can be accessed via chart.yScale()
+ , state = { stacked: false }
+ , defaultState = null
+ , noData = "No Data Available."
+ , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
+ , controlWidth = function() { return showControls ? 180 : 0 }
+ , transitionDuration = 250
+ ;
+
+ multibar
+ .stacked(false)
+ ;
+ xAxis
+ .orient('bottom')
+ .tickPadding(7)
+ .highlightZero(true)
+ .showMaxMin(false)
+ .tickFormat(function(d) { return d })
+ ;
+ yAxis
+ .orient((rightAlignYAxis) ? 'right' : 'left')
+ .tickFormat(d3.format(',.1f'))
+ ;
+
+ controls.updateState(false);
+ //============================================================
+
+
+ //============================================================
+ // Private Variables
+ //------------------------------------------------------------
+
+ var showTooltip = function(e, offsetElement) {
+ var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
+ top = e.pos[1] + ( offsetElement.offsetTop || 0),
+ x = xAxis.tickFormat()(multibar.x()(e.point, e.pointIndex)),
+ y = yAxis.tickFormat()(multibar.y()(e.point, e.pointIndex)),
+ content = tooltip(e.series.key, x, y, e, chart);
+
+ nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
+ };
+
+ //============================================================
+
+
+ function chart(selection) {
+ selection.each(function(data) {
+ var container = d3.select(this),
+ that = this;
+
+ var availableWidth = (width || parseInt(container.style('width')) || 960)
+ - margin.left - margin.right,
+ availableHeight = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom;
+
+ chart.update = function() { container.transition().duration(transitionDuration).call(chart) };
+ chart.container = this;
+
+ //set state.disabled
+ state.disabled = data.map(function(d) { return !!d.disabled });
+
+ if (!defaultState) {
+ var key;
+ defaultState = {};
+ for (key in state) {
+ if (state[key] instanceof Array)
+ defaultState[key] = state[key].slice(0);
+ else
+ defaultState[key] = state[key];
+ }
+ }
+ //------------------------------------------------------------
+ // Display noData message if there's nothing to show.
+
+ if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
+ var noDataText = container.selectAll('.nv-noData').data([noData]);
+
+ noDataText.enter().append('text')
+ .attr('class', 'nvd3 nv-noData')
+ .attr('dy', '-.7em')
+ .style('text-anchor', 'middle');
+
+ noDataText
+ .attr('x', margin.left + availableWidth / 2)
+ .attr('y', margin.top + availableHeight / 2)
+ .text(function(d) { return d });
+
+ return chart;
+ } else {
+ container.selectAll('.nv-noData').remove();
+ }
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Scales
+
+ x = multibar.xScale();
+ y = multibar.yScale();
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+
+ var wrap = container.selectAll('g.nv-wrap.nv-multiBarWithLegend').data([data]);
+ var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multiBarWithLegend').append('g');
+ var g = wrap.select('g');
+
+ gEnter.append('g').attr('class', 'nv-x nv-axis');
+ gEnter.append('g').attr('class', 'nv-y nv-axis');
+ gEnter.append('g').attr('class', 'nv-barsWrap');
+ gEnter.append('g').attr('class', 'nv-legendWrap');
+ gEnter.append('g').attr('class', 'nv-controlsWrap');
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Legend
+
+ if (showLegend) {
+ legend.width(availableWidth - controlWidth());
+
+ if (multibar.barColor())
+ data.forEach(function(series,i) {
+ series.color = d3.rgb('#ccc').darker(i * 1.5).toString();
+ })
+
+ g.select('.nv-legendWrap')
+ .datum(data)
+ .call(legend);
+
+ if ( margin.top != legend.height()) {
+ margin.top = legend.height();
+ availableHeight = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom;
+ }
+
+ g.select('.nv-legendWrap')
+ .attr('transform', 'translate(' + controlWidth() + ',' + (-margin.top) +')');
+ }
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Controls
+
+ if (showControls) {
+ var controlsData = [
+ { key: 'Grouped', disabled: multibar.stacked() },
+ { key: 'Stacked', disabled: !multibar.stacked() }
+ ];
+
+ controls.width(controlWidth()).color(['#444', '#444', '#444']);
+ g.select('.nv-controlsWrap')
+ .datum(controlsData)
+ .attr('transform', 'translate(0,' + (-margin.top) +')')
+ .call(controls);
+ }
+
+ //------------------------------------------------------------
+
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+
+ if (rightAlignYAxis) {
+ g.select(".nv-y.nv-axis")
+ .attr("transform", "translate(" + availableWidth + ",0)");
+ }
+
+ //------------------------------------------------------------
+ // Main Chart Component(s)
+
+ multibar
+ .disabled(data.map(function(series) { return series.disabled }))
+ .width(availableWidth)
+ .height(availableHeight)
+ .color(data.map(function(d,i) {
+ return d.color || color(d, i);
+ }).filter(function(d,i) { return !data[i].disabled }))
+
+
+ var barsWrap = g.select('.nv-barsWrap')
+ .datum(data.filter(function(d) { return !d.disabled }))
+
+ barsWrap.transition().call(multibar);
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Axes
+
+ if (showXAxis) {
+ xAxis
+ .scale(x)
+ .ticks( availableWidth / 100 )
+ .tickSize(-availableHeight, 0);
+
+ g.select('.nv-x.nv-axis')
+ .attr('transform', 'translate(0,' + y.range()[0] + ')');
+ g.select('.nv-x.nv-axis').transition()
+ .call(xAxis);
+
+ var xTicks = g.select('.nv-x.nv-axis > g').selectAll('g');
+
+ xTicks
+ .selectAll('line, text')
+ .style('opacity', 1)
+
+ if (staggerLabels) {
+ var getTranslate = function(x,y) {
+ return "translate(" + x + "," + y + ")";
+ };
+
+ var staggerUp = 5, staggerDown = 17; //pixels to stagger by
+ // Issue #140
+ xTicks
+ .selectAll("text")
+ .attr('transform', function(d,i,j) {
+ return getTranslate(0, (j % 2 == 0 ? staggerUp : staggerDown));
+ });
+
+ var totalInBetweenTicks = d3.selectAll(".nv-x.nv-axis .nv-wrap g g text")[0].length;
+ g.selectAll(".nv-x.nv-axis .nv-axisMaxMin text")
+ .attr("transform", function(d,i) {
+ return getTranslate(0, (i === 0 || totalInBetweenTicks % 2 !== 0) ? staggerDown : staggerUp);
+ });
+ }
+
+ if (reduceXTicks)
+ xTicks
+ .filter(function(d,i) {
+ return i % Math.ceil(data[0].values.length / (availableWidth / 100)) !== 0;
+ })
+ .selectAll('text, line')
+ .style('opacity', 0);
+
+ if(rotateLabels)
+ xTicks
+ .selectAll('.tick text')
+ .attr('transform', 'rotate(' + rotateLabels + ' 0,0)')
+ .style('text-anchor', rotateLabels > 0 ? 'start' : 'end');
+
+ g.select('.nv-x.nv-axis').selectAll('g.nv-axisMaxMin text')
+ .style('opacity', 1);
+ }
+
+
+ if (showYAxis) {
+ yAxis
+ .scale(y)
+ .ticks( availableHeight / 36 )
+ .tickSize( -availableWidth, 0);
+
+ g.select('.nv-y.nv-axis').transition()
+ .call(yAxis);
+ }
+
+
+ //------------------------------------------------------------
+
+
+
+ //============================================================
+ // Event Handling/Dispatching (in chart's scope)
+ //------------------------------------------------------------
+
+ legend.dispatch.on('stateChange', function(newState) {
+ state = newState;
+ dispatch.stateChange(state);
+ chart.update();
+ });
+
+ controls.dispatch.on('legendClick', function(d,i) {
+ if (!d.disabled) return;
+ controlsData = controlsData.map(function(s) {
+ s.disabled = true;
+ return s;
+ });
+ d.disabled = false;
+
+ switch (d.key) {
+ case 'Grouped':
+ multibar.stacked(false);
+ break;
+ case 'Stacked':
+ multibar.stacked(true);
+ break;
+ }
+
+ state.stacked = multibar.stacked();
+ dispatch.stateChange(state);
+
+ chart.update();
+ });
+
+ dispatch.on('tooltipShow', function(e) {
+ if (tooltips) showTooltip(e, that.parentNode)
+ });
+
+ // Update chart from a state object passed to event handler
+ dispatch.on('changeState', function(e) {
+
+ if (typeof e.disabled !== 'undefined') {
+ data.forEach(function(series,i) {
+ series.disabled = e.disabled[i];
+ });
+
+ state.disabled = e.disabled;
+ }
+
+ if (typeof e.stacked !== 'undefined') {
+ multibar.stacked(e.stacked);
+ state.stacked = e.stacked;
+ }
+
+ chart.update();
+ });
+
+ //============================================================
+
+
+ });
+
+ return chart;
+ }
+
+
+ //============================================================
+ // Event Handling/Dispatching (out of chart's scope)
+ //------------------------------------------------------------
+
+ multibar.dispatch.on('elementMouseover.tooltip', function(e) {
+ e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
+ dispatch.tooltipShow(e);
+ });
+
+ multibar.dispatch.on('elementMouseout.tooltip', function(e) {
+ dispatch.tooltipHide(e);
+ });
+ dispatch.on('tooltipHide', function() {
+ if (tooltips) nv.tooltip.cleanup();
+ });
+
+ //============================================================
+
+
+ //============================================================
+ // Expose Public Variables
+ //------------------------------------------------------------
+
+ // expose chart's sub-components
+ chart.dispatch = dispatch;
+ chart.multibar = multibar;
+ chart.legend = legend;
+ chart.xAxis = xAxis;
+ chart.yAxis = yAxis;
+
+ d3.rebind(chart, multibar, 'x', 'y', 'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'clipEdge',
+ 'id', 'stacked', 'stackOffset', 'delay', 'barColor','groupSpacing');
+
+ chart.options = nv.utils.optionsFunc.bind(chart);
+
+ chart.margin = function(_) {
+ if (!arguments.length) return margin;
+ margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
+ margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
+ margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
+ margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
+ return chart;
+ };
+
+ chart.width = function(_) {
+ if (!arguments.length) return width;
+ width = _;
+ return chart;
+ };
+
+ chart.height = function(_) {
+ if (!arguments.length) return height;
+ height = _;
+ return chart;
+ };
+
+ chart.color = function(_) {
+ if (!arguments.length) return color;
+ color = nv.utils.getColor(_);
+ legend.color(color);
+ return chart;
+ };
+
+ chart.showControls = function(_) {
+ if (!arguments.length) return showControls;
+ showControls = _;
+ return chart;
+ };
+
+ chart.showLegend = function(_) {
+ if (!arguments.length) return showLegend;
+ showLegend = _;
+ return chart;
+ };
+
+ chart.showXAxis = function(_) {
+ if (!arguments.length) return showXAxis;
+ showXAxis = _;
+ return chart;
+ };
+
+ chart.showYAxis = function(_) {
+ if (!arguments.length) return showYAxis;
+ showYAxis = _;
+ return chart;
+ };
+
+ chart.rightAlignYAxis = function(_) {
+ if(!arguments.length) return rightAlignYAxis;
+ rightAlignYAxis = _;
+ yAxis.orient( (_) ? 'right' : 'left');
+ return chart;
+ };
+
+ chart.reduceXTicks= function(_) {
+ if (!arguments.length) return reduceXTicks;
+ reduceXTicks = _;
+ return chart;
+ };
+
+ chart.rotateLabels = function(_) {
+ if (!arguments.length) return rotateLabels;
+ rotateLabels = _;
+ return chart;
+ }
+
+ chart.staggerLabels = function(_) {
+ if (!arguments.length) return staggerLabels;
+ staggerLabels = _;
+ return chart;
+ };
+
+ chart.tooltip = function(_) {
+ if (!arguments.length) return tooltip;
+ tooltip = _;
+ return chart;
+ };
+
+ chart.tooltips = function(_) {
+ if (!arguments.length) return tooltips;
+ tooltips = _;
+ return chart;
+ };
+
+ chart.tooltipContent = function(_) {
+ if (!arguments.length) return tooltip;
+ tooltip = _;
+ return chart;
+ };
+
+ chart.state = function(_) {
+ if (!arguments.length) return state;
+ state = _;
+ return chart;
+ };
+
+ chart.defaultState = function(_) {
+ if (!arguments.length) return defaultState;
+ defaultState = _;
+ return chart;
+ };
+
+ chart.noData = function(_) {
+ if (!arguments.length) return noData;
+ noData = _;
+ return chart;
+ };
+
+ chart.transitionDuration = function(_) {
+ if (!arguments.length) return transitionDuration;
+ transitionDuration = _;
+ return chart;
+ };
+
+ //============================================================
+
+
+ return chart;
+}
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