--- /dev/null
+
+nv.models.stackedAreaChart = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var stacked = nv.models.stackedArea()
+ , xAxis = nv.models.axis()
+ , yAxis = nv.models.axis()
+ , legend = nv.models.legend()
+ , controls = nv.models.legend()
+ , interactiveLayer = nv.interactiveGuideline()
+ ;
+
+ var margin = {top: 30, right: 25, bottom: 50, left: 60}
+ , width = null
+ , height = null
+ , color = nv.utils.defaultColor() // a function that takes in d, i and returns color
+ , showControls = true
+ , showLegend = true
+ , showXAxis = true
+ , showYAxis = true
+ , rightAlignYAxis = false
+ , useInteractiveGuideline = false
+ , 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()
+ , yAxisTickFormat = d3.format(',.2f')
+ , state = { style: stacked.style() }
+ , defaultState = null
+ , noData = 'No Data Available.'
+ , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
+ , controlWidth = 250
+ , cData = ['Stacked','Stream','Expanded']
+ , controlLabels = {}
+ , transitionDuration = 250
+ ;
+
+ xAxis
+ .orient('bottom')
+ .tickPadding(7)
+ ;
+ yAxis
+ .orient((rightAlignYAxis) ? 'right' : 'left')
+ ;
+
+ 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()(stacked.x()(e.point, e.pointIndex)),
+ y = yAxis.tickFormat()(stacked.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 No Data 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 = stacked.xScale();
+ y = stacked.yScale();
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+
+ var wrap = container.selectAll('g.nv-wrap.nv-stackedAreaChart').data([data]);
+ var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedAreaChart').append('g');
+ var g = wrap.select('g');
+
+ gEnter.append("rect").style("opacity",0);
+ gEnter.append('g').attr('class', 'nv-x nv-axis');
+ gEnter.append('g').attr('class', 'nv-y nv-axis');
+ gEnter.append('g').attr('class', 'nv-stackedWrap');
+ gEnter.append('g').attr('class', 'nv-legendWrap');
+ gEnter.append('g').attr('class', 'nv-controlsWrap');
+ gEnter.append('g').attr('class', 'nv-interactive');
+
+ g.select("rect").attr("width",availableWidth).attr("height",availableHeight);
+ //------------------------------------------------------------
+ // Legend
+
+ if (showLegend) {
+ var legendWidth = (showControls) ? availableWidth - controlWidth : availableWidth;
+ legend
+ .width(legendWidth);
+
+ 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(' + (availableWidth-legendWidth) + ',' + (-margin.top) +')');
+ }
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Controls
+
+ if (showControls) {
+ var controlsData = [
+ {
+ key: controlLabels.stacked || 'Stacked',
+ metaKey: 'Stacked',
+ disabled: stacked.style() != 'stack',
+ style: 'stack'
+ },
+ {
+ key: controlLabels.stream || 'Stream',
+ metaKey: 'Stream',
+ disabled: stacked.style() != 'stream',
+ style: 'stream'
+ },
+ {
+ key: controlLabels.expanded || 'Expanded',
+ metaKey: 'Expanded',
+ disabled: stacked.style() != 'expand',
+ style: 'expand'
+ },
+ {
+ key: controlLabels.stack_percent || 'Stack %',
+ metaKey: 'Stack_Percent',
+ disabled: stacked.style() != 'stack_percent',
+ style: 'stack_percent'
+ }
+ ];
+
+ controlWidth = (cData.length/3) * 260;
+
+ controlsData = controlsData.filter(function(d) {
+ return cData.indexOf(d.metaKey) !== -1;
+ })
+
+ controls
+ .width( controlWidth )
+ .color(['#444', '#444', '#444']);
+
+ g.select('.nv-controlsWrap')
+ .datum(controlsData)
+ .call(controls);
+
+
+ if ( margin.top != Math.max(controls.height(), legend.height()) ) {
+ margin.top = Math.max(controls.height(), legend.height());
+ availableHeight = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom;
+ }
+
+
+ g.select('.nv-controlsWrap')
+ .attr('transform', 'translate(0,' + (-margin.top) +')');
+ }
+
+ //------------------------------------------------------------
+
+
+ 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)
+
+ //------------------------------------------------------------
+ //Set up interactive layer
+ if (useInteractiveGuideline) {
+ interactiveLayer
+ .width(availableWidth)
+ .height(availableHeight)
+ .margin({left: margin.left, top: margin.top})
+ .svgContainer(container)
+ .xScale(x);
+ wrap.select(".nv-interactive").call(interactiveLayer);
+ }
+
+ stacked
+ .width(availableWidth)
+ .height(availableHeight)
+
+ var stackedWrap = g.select('.nv-stackedWrap')
+ .datum(data);
+
+ stackedWrap.transition().call(stacked);
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Axes
+
+ if (showXAxis) {
+ xAxis
+ .scale(x)
+ .ticks( availableWidth / 100 )
+ .tickSize( -availableHeight, 0);
+
+ g.select('.nv-x.nv-axis')
+ .attr('transform', 'translate(0,' + availableHeight + ')');
+
+ g.select('.nv-x.nv-axis')
+ .transition().duration(0)
+ .call(xAxis);
+ }
+
+ if (showYAxis) {
+ yAxis
+ .scale(y)
+ .ticks(stacked.offset() == 'wiggle' ? 0 : availableHeight / 36)
+ .tickSize(-availableWidth, 0)
+ .setTickFormat( (stacked.style() == 'expand' || stacked.style() == 'stack_percent')
+ ? d3.format('%') : yAxisTickFormat);
+
+ g.select('.nv-y.nv-axis')
+ .transition().duration(0)
+ .call(yAxis);
+ }
+
+ //------------------------------------------------------------
+
+
+ //============================================================
+ // Event Handling/Dispatching (in chart's scope)
+ //------------------------------------------------------------
+
+ stacked.dispatch.on('areaClick.toggle', function(e) {
+ if (data.filter(function(d) { return !d.disabled }).length === 1)
+ data.forEach(function(d) {
+ d.disabled = false;
+ });
+ else
+ data.forEach(function(d,i) {
+ d.disabled = (i != e.seriesIndex);
+ });
+
+ state.disabled = data.map(function(d) { return !!d.disabled });
+ dispatch.stateChange(state);
+
+ chart.update();
+ });
+
+ legend.dispatch.on('stateChange', function(newState) {
+ state.disabled = newState.disabled;
+ 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;
+
+ stacked.style(d.style);
+
+
+ state.style = stacked.style();
+ dispatch.stateChange(state);
+
+ chart.update();
+ });
+
+
+ interactiveLayer.dispatch.on('elementMousemove', function(e) {
+ stacked.clearHighlights();
+ var singlePoint, pointIndex, pointXLocation, allData = [];
+ data
+ .filter(function(series, i) {
+ series.seriesIndex = i;
+ return !series.disabled;
+ })
+ .forEach(function(series,i) {
+ pointIndex = nv.interactiveBisect(series.values, e.pointXValue, chart.x());
+ stacked.highlightPoint(i, pointIndex, true);
+ var point = series.values[pointIndex];
+ if (typeof point === 'undefined') return;
+ if (typeof singlePoint === 'undefined') singlePoint = point;
+ if (typeof pointXLocation === 'undefined') pointXLocation = chart.xScale()(chart.x()(point,pointIndex));
+
+ //If we are in 'expand' mode, use the stacked percent value instead of raw value.
+ var tooltipValue = (stacked.style() == 'expand') ? point.display.y : chart.y()(point,pointIndex);
+ allData.push({
+ key: series.key,
+ value: tooltipValue,
+ color: color(series,series.seriesIndex),
+ stackedValue: point.display
+ });
+ });
+
+ allData.reverse();
+
+ //Highlight the tooltip entry based on which stack the mouse is closest to.
+ if (allData.length > 2) {
+ var yValue = chart.yScale().invert(e.mouseY);
+ var yDistMax = Infinity, indexToHighlight = null;
+ allData.forEach(function(series,i) {
+ if ( yValue >= series.stackedValue.y0 && yValue <= (series.stackedValue.y0 + series.stackedValue.y))
+ {
+ indexToHighlight = i;
+ return;
+ }
+ });
+ if (indexToHighlight != null)
+ allData[indexToHighlight].highlight = true;
+ }
+
+ var xValue = xAxis.tickFormat()(chart.x()(singlePoint,pointIndex));
+
+ //If we are in 'expand' mode, force the format to be a percentage.
+ var valueFormatter = (stacked.style() == 'expand') ?
+ function(d,i) {return d3.format(".1%")(d);} :
+ function(d,i) {return yAxis.tickFormat()(d); };
+ interactiveLayer.tooltip
+ .position({left: pointXLocation + margin.left, top: e.mouseY + margin.top})
+ .chartContainer(that.parentNode)
+ .enabled(tooltips)
+ .valueFormatter(valueFormatter)
+ .data(
+ {
+ value: xValue,
+ series: allData
+ }
+ )();
+
+ interactiveLayer.renderGuideLine(pointXLocation);
+
+ });
+
+ interactiveLayer.dispatch.on("elementMouseout",function(e) {
+ dispatch.tooltipHide();
+ stacked.clearHighlights();
+ });
+
+
+ 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.style !== 'undefined') {
+ stacked.style(e.style);
+ }
+
+ chart.update();
+ });
+
+ });
+
+
+ return chart;
+ }
+
+
+ //============================================================
+ // Event Handling/Dispatching (out of chart's scope)
+ //------------------------------------------------------------
+
+ stacked.dispatch.on('tooltipShow', function(e) {
+ //disable tooltips when value ~= 0
+ //// TODO: consider removing points from voronoi that have 0 value instead of this hack
+ /*
+ if (!Math.round(stacked.y()(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
+ setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
+ return false;
+ }
+ */
+
+ e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
+ dispatch.tooltipShow(e);
+ });
+
+ stacked.dispatch.on('tooltipHide', 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.stacked = stacked;
+ chart.legend = legend;
+ chart.controls = controls;
+ chart.xAxis = xAxis;
+ chart.yAxis = yAxis;
+ chart.interactiveLayer = interactiveLayer;
+
+ d3.rebind(chart, stacked, 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'xRange', 'yRange', 'sizeDomain', 'interactive', 'useVoronoi', 'offset', 'order', 'style', 'clipEdge', 'forceX', 'forceY', 'forceSize', 'interpolate');
+
+ 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);
+ stacked.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.useInteractiveGuideline = function(_) {
+ if(!arguments.length) return useInteractiveGuideline;
+ useInteractiveGuideline = _;
+ if (_ === true) {
+ chart.interactive(false);
+ chart.useVoronoi(false);
+ }
+ 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;
+ };
+
+ chart.controlsData = function(_) {
+ if (!arguments.length) return cData;
+ cData = _;
+ return chart;
+ };
+
+ chart.controlLabels = function(_) {
+ if (!arguments.length) return controlLabels;
+ if (typeof _ !== 'object') return controlLabels;
+ controlLabels = _;
+ return chart;
+ };
+
+ yAxis.setTickFormat = yAxis.tickFormat;
+
+ yAxis.tickFormat = function(_) {
+ if (!arguments.length) return yAxisTickFormat;
+ yAxisTickFormat = _;
+ return yAxis;
+ };
+
+
+ //============================================================
+
+ return chart;
+}
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