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479 lines
14 KiB
JavaScript
479 lines
14 KiB
JavaScript
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nv.models.stackedAreaChart = function() {
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//============================================================
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// Public Variables with Default Settings
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//------------------------------------------------------------
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var stacked = nv.models.stackedArea()
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, xAxis = nv.models.axis()
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, yAxis = nv.models.axis()
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, legend = nv.models.legend()
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, controls = nv.models.legend()
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;
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var margin = {top: 30, right: 25, bottom: 50, left: 60}
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, width = null
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, height = null
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, color = nv.utils.defaultColor() // a function that takes in d, i and returns color
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, showControls = true
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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 + ' on ' + x + '</p>'
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}
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, x //can be accessed via chart.xScale()
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, y //can be accessed via chart.yScale()
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, yAxisTickFormat = d3.format(',.2f')
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, state = { style: stacked.style() }
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, defaultState = null
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, noData = 'No Data Available.'
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, dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
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, controlWidth = 250
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;
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xAxis
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.orient('bottom')
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.tickPadding(7)
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;
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yAxis
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.orient('left')
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;
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stacked.scatter
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.pointActive(function(d) {
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//console.log(stacked.y()(d), !!Math.round(stacked.y()(d) * 100));
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return !!Math.round(stacked.y()(d) * 100);
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})
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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 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()(stacked.x()(e.point, e.pointIndex)),
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y = yAxis.tickFormat()(stacked.y()(e.point, e.pointIndex)),
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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', null, offsetElement);
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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 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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chart.update = function() { chart(selection) };
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chart.container = this;
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//set state.disabled
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state.disabled = data.map(function(d) { return !!d.disabled });
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if (!defaultState) {
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var key;
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defaultState = {};
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for (key in state) {
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if (state[key] instanceof Array)
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defaultState[key] = state[key].slice(0);
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else
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defaultState[key] = state[key];
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}
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}
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//------------------------------------------------------------
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// Display No Data message if there's nothing to show.
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if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
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var noDataText = container.selectAll('.nv-noData').data([noData]);
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noDataText.enter().append('text')
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.attr('class', 'nvd3 nv-noData')
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.attr('dy', '-.7em')
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.style('text-anchor', 'middle');
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noDataText
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.attr('x', margin.left + availableWidth / 2)
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.attr('y', margin.top + availableHeight / 2)
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.text(function(d) { return d });
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return chart;
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} else {
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container.selectAll('.nv-noData').remove();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup Scales
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x = stacked.xScale();
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y = stacked.yScale();
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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-stackedAreaChart').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedAreaChart').append('g');
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var g = wrap.select('g');
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gEnter.append('g').attr('class', 'nv-x nv-axis');
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gEnter.append('g').attr('class', 'nv-y nv-axis');
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gEnter.append('g').attr('class', 'nv-stackedWrap');
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gEnter.append('g').attr('class', 'nv-legendWrap');
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gEnter.append('g').attr('class', 'nv-controlsWrap');
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Legend
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if (showLegend) {
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legend
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.width( availableWidth - controlWidth );
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g.select('.nv-legendWrap')
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.datum(data)
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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('.nv-legendWrap')
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.attr('transform', 'translate(' + controlWidth + ',' + (-margin.top) +')');
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Controls
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if (showControls) {
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var controlsData = [
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{ key: 'Stacked', disabled: stacked.offset() != 'zero' },
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{ key: 'Stream', disabled: stacked.offset() != 'wiggle' },
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{ key: 'Expanded', disabled: stacked.offset() != 'expand' }
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];
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controls
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.width( controlWidth )
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.color(['#444', '#444', '#444']);
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g.select('.nv-controlsWrap')
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.datum(controlsData)
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.call(controls);
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if ( margin.top != Math.max(controls.height(), legend.height()) ) {
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margin.top = Math.max(controls.height(), 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('.nv-controlsWrap')
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.attr('transform', 'translate(0,' + (-margin.top) +')');
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}
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//------------------------------------------------------------
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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//------------------------------------------------------------
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// Main Chart Component(s)
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stacked
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.width(availableWidth)
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.height(availableHeight)
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var stackedWrap = g.select('.nv-stackedWrap')
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.datum(data);
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//d3.transition(stackedWrap).call(stacked);
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stackedWrap.call(stacked);
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup Axes
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xAxis
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.scale(x)
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.ticks( availableWidth / 100 )
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.tickSize( -availableHeight, 0);
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g.select('.nv-x.nv-axis')
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.attr('transform', 'translate(0,' + availableHeight + ')');
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//d3.transition(g.select('.nv-x.nv-axis'))
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g.select('.nv-x.nv-axis')
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.transition().duration(0)
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.call(xAxis);
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yAxis
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.scale(y)
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.ticks(stacked.offset() == 'wiggle' ? 0 : availableHeight / 36)
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.tickSize(-availableWidth, 0)
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.setTickFormat(stacked.offset() == 'expand' ? d3.format('%') : yAxisTickFormat);
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//d3.transition(g.select('.nv-y.nv-axis'))
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g.select('.nv-y.nv-axis')
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.transition().duration(0)
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.call(yAxis);
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//------------------------------------------------------------
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//============================================================
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// Event Handling/Dispatching (in chart's scope)
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//------------------------------------------------------------
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stacked.dispatch.on('areaClick.toggle', function(e) {
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if (data.filter(function(d) { return !d.disabled }).length === 1)
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data = data.map(function(d) {
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d.disabled = false;
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return d
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});
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else
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data = data.map(function(d,i) {
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d.disabled = (i != e.seriesIndex);
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return d
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});
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state.disabled = data.map(function(d) { return !!d.disabled });
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dispatch.stateChange(state);
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//selection.transition().call(chart);
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chart(selection);
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});
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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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return d;
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});
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}
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state.disabled = data.map(function(d) { return !!d.disabled });
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dispatch.stateChange(state);
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//selection.transition().call(chart);
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chart(selection);
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});
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controls.dispatch.on('legendClick', function(d,i) {
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if (!d.disabled) return;
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controlsData = controlsData.map(function(s) {
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s.disabled = true;
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return s;
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});
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d.disabled = false;
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switch (d.key) {
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case 'Stacked':
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stacked.style('stack');
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break;
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case 'Stream':
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stacked.style('stream');
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break;
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case 'Expanded':
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stacked.style('expand');
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break;
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}
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state.style = stacked.style();
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dispatch.stateChange(state);
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//selection.transition().call(chart);
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chart(selection);
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});
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dispatch.on('tooltipShow', function(e) {
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if (tooltips) showTooltip(e, that.parentNode);
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});
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// Update chart from a state object passed to event handler
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dispatch.on('changeState', function(e) {
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if (typeof e.disabled !== 'undefined') {
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data.forEach(function(series,i) {
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series.disabled = e.disabled[i];
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});
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state.disabled = e.disabled;
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}
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if (typeof e.style !== 'undefined') {
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stacked.style(e.style);
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}
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selection.call(chart);
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});
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});
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return chart;
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}
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//============================================================
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// Event Handling/Dispatching (out of chart's scope)
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//------------------------------------------------------------
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stacked.dispatch.on('tooltipShow', function(e) {
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//disable tooltips when value ~= 0
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//// TODO: consider removing points from voronoi that have 0 value instead of this hack
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/*
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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
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setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
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return false;
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}
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*/
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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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stacked.dispatch.on('tooltipHide', function(e) {
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dispatch.tooltipHide(e);
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});
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dispatch.on('tooltipHide', function() {
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if (tooltips) nv.tooltip.cleanup();
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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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// expose chart's sub-components
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chart.dispatch = dispatch;
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chart.stacked = stacked;
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chart.legend = legend;
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chart.controls = controls;
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chart.xAxis = xAxis;
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chart.yAxis = yAxis;
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d3.rebind(chart, stacked, 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'sizeDomain', 'interactive', 'offset', 'order', 'style', 'clipEdge', 'forceX', 'forceY', 'forceSize', 'interpolate');
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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 getWidth;
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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 getHeight;
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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 = nv.utils.getColor(_);
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legend.color(color);
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stacked.color(color);
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return chart;
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};
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chart.showControls = function(_) {
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if (!arguments.length) return showControls;
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showControls = _;
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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.tooltip = 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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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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chart.state = function(_) {
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if (!arguments.length) return state;
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state = _;
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return chart;
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};
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chart.defaultState = function(_) {
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if (!arguments.length) return defaultState;
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defaultState = _;
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return chart;
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};
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chart.noData = function(_) {
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if (!arguments.length) return noData;
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noData = _;
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return chart;
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};
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yAxis.setTickFormat = yAxis.tickFormat;
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yAxis.tickFormat = function(_) {
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if (!arguments.length) return yAxisTickFormat;
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yAxisTickFormat = _;
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return yAxis;
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};
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//============================================================
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return chart;
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}
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