--- /dev/null
+nv.models.pieChart = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var pie = nv.models.pie()
+ , legend = nv.models.legend()
+ ;
+
+ var margin = {top: 30, right: 20, bottom: 20, left: 20}
+ , width = null
+ , height = null
+ , showLegend = true
+ , color = nv.utils.defaultColor()
+ , tooltips = false
+ , tooltip = function(key, y, e, graph) {
+ return '<h3>' + key + '</h3>' +
+ '<p>' + y + '</p>'
+ }
+ , state = {}
+ , defaultState = null
+ , noData = "No Data Available."
+ , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
+ ;
+
+ //============================================================
+
+
+ //============================================================
+ // Private Variables
+ //------------------------------------------------------------
+
+ var showTooltip = function(e, offsetElement) {
+ var tooltipLabel = pie.description()(e.point) || pie.x()(e.point)
+ var left = e.pos[0] + ( (offsetElement && offsetElement.offsetLeft) || 0 ),
+ top = e.pos[1] + ( (offsetElement && offsetElement.offsetTop) || 0),
+ y = pie.valueFormat()(pie.y()(e.point)),
+ content = tooltip(tooltipLabel, 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().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) {
+ 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 containers and skeleton of chart
+
+ var wrap = container.selectAll('g.nv-wrap.nv-pieChart').data([data]);
+ var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-pieChart').append('g');
+ var g = wrap.select('g');
+
+ gEnter.append('g').attr('class', 'nv-pieWrap');
+ gEnter.append('g').attr('class', 'nv-legendWrap');
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Legend
+
+ if (showLegend) {
+ legend
+ .width( availableWidth )
+ .key(pie.x());
+
+ wrap.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;
+ }
+
+ wrap.select('.nv-legendWrap')
+ .attr('transform', 'translate(0,' + (-margin.top) +')');
+ }
+
+ //------------------------------------------------------------
+
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+
+
+ //------------------------------------------------------------
+ // Main Chart Component(s)
+
+ pie
+ .width(availableWidth)
+ .height(availableHeight);
+
+
+ var pieWrap = g.select('.nv-pieWrap')
+ .datum([data]);
+
+ d3.transition(pieWrap).call(pie);
+
+ //------------------------------------------------------------
+
+
+ //============================================================
+ // Event Handling/Dispatching (in chart's scope)
+ //------------------------------------------------------------
+
+ /*legend.dispatch.on('stateChange', function(newState) {
+ state = newState;
+ dispatch.stateChange(state);
+ chart.update();
+ });*/
+
+ pie.dispatch.on('elementMouseout.tooltip', function(e) {
+ dispatch.tooltipHide(e);
+ });
+
+ // 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;
+ }
+
+ chart.update();
+ });
+
+ //============================================================
+
+
+ });
+
+ return chart;
+ }
+
+ //============================================================
+ // Event Handling/Dispatching (out of chart's scope)
+ //------------------------------------------------------------
+
+ pie.dispatch.on('elementMouseover.tooltip', function(e) {
+ e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
+ dispatch.tooltipShow(e);
+ });
+
+ dispatch.on('tooltipShow', function(e) {
+ if (tooltips) showTooltip(e);
+ });
+
+ dispatch.on('tooltipHide', function() {
+ if (tooltips) nv.tooltip.cleanup();
+ });
+
+ //============================================================
+
+
+ //============================================================
+ // Expose Public Variables
+ //------------------------------------------------------------
+
+ // expose chart's sub-components
+ chart.legend = legend;
+ chart.dispatch = dispatch;
+ chart.pie = pie;
+
+ d3.rebind(chart, pie, 'valueFormat', 'values', 'x', 'y', 'description', 'id', 'showLabels', 'donutLabelsOutside', 'pieLabelsOutside', 'labelType', 'donut', 'donutRatio', 'labelThreshold');
+ 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);
+ pie.color(color);
+ return chart;
+ };
+
+ chart.showLegend = function(_) {
+ if (!arguments.length) return showLegend;
+ showLegend = _;
+ 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;
+ };
+
+ //============================================================
+
+
+ return chart;
+}
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