--- /dev/null
+nv.models.pie = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var margin = {top: 0, right: 0, bottom: 0, left: 0}
+ , width = 500
+ , height = 500
+ , getX = function(d) { return d.x }
+ , getY = function(d) { return d.y }
+ , getDescription = function(d) { return d.description }
+ , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
+ , color = nv.utils.defaultColor()
+ , valueFormat = d3.format(',.2f')
+ , showLabels = true
+ , pieLabelsOutside = true
+ , donutLabelsOutside = false
+ , labelType = "key"
+ , labelThreshold = .02 //if slice percentage is under this, don't show label
+ , donut = false
+ , labelSunbeamLayout = false
+ , startAngle = false
+ , endAngle = false
+ , donutRatio = 0.5
+ , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
+ ;
+
+ //============================================================
+
+
+ function chart(selection) {
+ selection.each(function(data) {
+ var availableWidth = width - margin.left - margin.right,
+ availableHeight = height - margin.top - margin.bottom,
+ radius = Math.min(availableWidth, availableHeight) / 2,
+ arcRadius = radius-(radius / 5),
+ container = d3.select(this);
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+
+ //var wrap = container.selectAll('.nv-wrap.nv-pie').data([data]);
+ var wrap = container.selectAll('.nv-wrap.nv-pie').data(data);
+ var wrapEnter = wrap.enter().append('g').attr('class','nvd3 nv-wrap nv-pie nv-chart-' + id);
+ var gEnter = wrapEnter.append('g');
+ var g = wrap.select('g');
+
+ gEnter.append('g').attr('class', 'nv-pie');
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+ g.select('.nv-pie').attr('transform', 'translate(' + availableWidth / 2 + ',' + availableHeight / 2 + ')');
+
+ //------------------------------------------------------------
+
+
+ container
+ .on('click', function(d,i) {
+ dispatch.chartClick({
+ data: d,
+ index: i,
+ pos: d3.event,
+ id: id
+ });
+ });
+
+
+ var arc = d3.svg.arc()
+ .outerRadius(arcRadius);
+
+ if (startAngle) arc.startAngle(startAngle)
+ if (endAngle) arc.endAngle(endAngle);
+ if (donut) arc.innerRadius(radius * donutRatio);
+
+ // Setup the Pie chart and choose the data element
+ var pie = d3.layout.pie()
+ .sort(null)
+ .value(function(d) { return d.disabled ? 0 : getY(d) });
+
+ var slices = wrap.select('.nv-pie').selectAll('.nv-slice')
+ .data(pie);
+
+ slices.exit().remove();
+
+ var ae = slices.enter().append('g')
+ .attr('class', 'nv-slice')
+ .on('mouseover', function(d,i){
+ d3.select(this).classed('hover', true);
+ dispatch.elementMouseover({
+ label: getX(d.data),
+ value: getY(d.data),
+ point: d.data,
+ pointIndex: i,
+ pos: [d3.event.pageX, d3.event.pageY],
+ id: id
+ });
+ })
+ .on('mouseout', function(d,i){
+ d3.select(this).classed('hover', false);
+ dispatch.elementMouseout({
+ label: getX(d.data),
+ value: getY(d.data),
+ point: d.data,
+ index: i,
+ id: id
+ });
+ })
+ .on('click', function(d,i) {
+ dispatch.elementClick({
+ label: getX(d.data),
+ value: getY(d.data),
+ point: d.data,
+ index: i,
+ pos: d3.event,
+ id: id
+ });
+ d3.event.stopPropagation();
+ })
+ .on('dblclick', function(d,i) {
+ dispatch.elementDblClick({
+ label: getX(d.data),
+ value: getY(d.data),
+ point: d.data,
+ index: i,
+ pos: d3.event,
+ id: id
+ });
+ d3.event.stopPropagation();
+ });
+
+ slices
+ .attr('fill', function(d,i) { return color(d, i); })
+ .attr('stroke', function(d,i) { return color(d, i); });
+
+ var paths = ae.append('path')
+ .each(function(d) { this._current = d; });
+ //.attr('d', arc);
+
+ d3.transition(slices.select('path'))
+ .attr('d', arc);
+ //.attrTween('d', arcTween);
+
+ if (showLabels) {
+ // This does the normal label
+ var labelsArc = d3.svg.arc().innerRadius(0);
+
+ if (pieLabelsOutside){ labelsArc = arc; }
+
+ if (donutLabelsOutside) { labelsArc = d3.svg.arc().outerRadius(arc.outerRadius()); }
+
+ ae.append("g").classed("nv-label", true)
+ .each(function(d, i) {
+ var group = d3.select(this);
+
+ group
+ .attr('transform', function(d) {
+ if (labelSunbeamLayout) {
+ d.outerRadius = arcRadius + 10; // Set Outer Coordinate
+ d.innerRadius = arcRadius + 15; // Set Inner Coordinate
+ var rotateAngle = (d.startAngle + d.endAngle) / 2 * (180 / Math.PI);
+ if ((d.startAngle+d.endAngle)/2 < Math.PI) {
+ rotateAngle -= 90;
+ } else {
+ rotateAngle += 90;
+ }
+ return 'translate(' + labelsArc.centroid(d) + ') rotate(' + rotateAngle + ')';
+ } else {
+ d.outerRadius = radius + 10; // Set Outer Coordinate
+ d.innerRadius = radius + 15; // Set Inner Coordinate
+ return 'translate(' + labelsArc.centroid(d) + ')'
+ }
+ });
+
+ group.append('rect')
+ .style('stroke', '#fff')
+ .style('fill', '#fff')
+ .attr("rx", 3)
+ .attr("ry", 3);
+
+ group.append('text')
+ .style('text-anchor', labelSunbeamLayout ? ((d.startAngle + d.endAngle) / 2 < Math.PI ? 'start' : 'end') : 'middle') //center the text on it's origin or begin/end if orthogonal aligned
+ .style('fill', '#000')
+
+
+ });
+
+ slices.select(".nv-label").transition()
+ .attr('transform', function(d) {
+ if (labelSunbeamLayout) {
+ d.outerRadius = arcRadius + 10; // Set Outer Coordinate
+ d.innerRadius = arcRadius + 15; // Set Inner Coordinate
+ var rotateAngle = (d.startAngle + d.endAngle) / 2 * (180 / Math.PI);
+ if ((d.startAngle+d.endAngle)/2 < Math.PI) {
+ rotateAngle -= 90;
+ } else {
+ rotateAngle += 90;
+ }
+ return 'translate(' + labelsArc.centroid(d) + ') rotate(' + rotateAngle + ')';
+ } else {
+ d.outerRadius = radius + 10; // Set Outer Coordinate
+ d.innerRadius = radius + 15; // Set Inner Coordinate
+ return 'translate(' + labelsArc.centroid(d) + ')'
+ }
+ });
+
+ slices.each(function(d, i) {
+ var slice = d3.select(this);
+
+ slice
+ .select(".nv-label text")
+ .style('text-anchor', labelSunbeamLayout ? ((d.startAngle + d.endAngle) / 2 < Math.PI ? 'start' : 'end') : 'middle') //center the text on it's origin or begin/end if orthogonal aligned
+ .text(function(d, i) {
+ var percent = (d.endAngle - d.startAngle) / (2 * Math.PI);
+ return Math.round(percent*1001/10)+"%";
+ /*var labelTypes = {
+ "key" : getX(d.data),
+ "value": getY(d.data),
+ "percent": d3.format('%')(percent)
+ };
+ return (d.value && percent > labelThreshold) ? labelTypes[labelType] : '';
+ */
+ });
+
+ var textBox = slice.select('text').node().getBBox();
+ slice.select(".nv-label rect")
+ .attr("width", textBox.width + 10)
+ .attr("height", textBox.height + 10)
+ .attr("transform", function() {
+ return "translate(" + [textBox.x - 5, textBox.y - 5] + ")";
+ });
+ });
+ }
+
+
+ // Computes the angle of an arc, converting from radians to degrees.
+ function angle(d) {
+ var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
+ return a > 90 ? a - 180 : a;
+ }
+
+ function arcTween(a) {
+ a.endAngle = isNaN(a.endAngle) ? 0 : a.endAngle;
+ a.startAngle = isNaN(a.startAngle) ? 0 : a.startAngle;
+ if (!donut) a.innerRadius = 0;
+ var i = d3.interpolate(this._current, a);
+ this._current = i(0);
+ return function(t) {
+ return arc(i(t));
+ };
+ }
+
+ function tweenPie(b) {
+ b.innerRadius = 0;
+ var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
+ return function(t) {
+ return arc(i(t));
+ };
+ }
+
+ });
+
+ return chart;
+ }
+
+
+ //============================================================
+ // Expose Public Variables
+ //------------------------------------------------------------
+
+ chart.dispatch = dispatch;
+ 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.values = function(_) {
+ nv.log("pie.values() is no longer supported.");
+ return chart;
+ };
+
+ chart.x = function(_) {
+ if (!arguments.length) return getX;
+ getX = _;
+ return chart;
+ };
+
+ chart.y = function(_) {
+ if (!arguments.length) return getY;
+ getY = d3.functor(_);
+ return chart;
+ };
+
+ chart.description = function(_) {
+ if (!arguments.length) return getDescription;
+ getDescription = _;
+ return chart;
+ };
+
+ chart.showLabels = function(_) {
+ if (!arguments.length) return showLabels;
+ showLabels = _;
+ return chart;
+ };
+
+ chart.labelSunbeamLayout = function(_) {
+ if (!arguments.length) return labelSunbeamLayout;
+ labelSunbeamLayout = _;
+ return chart;
+ };
+
+ chart.donutLabelsOutside = function(_) {
+ if (!arguments.length) return donutLabelsOutside;
+ donutLabelsOutside = _;
+ return chart;
+ };
+
+ chart.pieLabelsOutside = function(_) {
+ if (!arguments.length) return pieLabelsOutside;
+ pieLabelsOutside = _;
+ return chart;
+ };
+
+ chart.labelType = function(_) {
+ if (!arguments.length) return labelType;
+ labelType = _;
+ labelType = labelType || "key";
+ return chart;
+ };
+
+ chart.donut = function(_) {
+ if (!arguments.length) return donut;
+ donut = _;
+ return chart;
+ };
+
+ chart.donutRatio = function(_) {
+ if (!arguments.length) return donutRatio;
+ donutRatio = _;
+ return chart;
+ };
+
+ chart.startAngle = function(_) {
+ if (!arguments.length) return startAngle;
+ startAngle = _;
+ return chart;
+ };
+
+ chart.endAngle = function(_) {
+ if (!arguments.length) return endAngle;
+ endAngle = _;
+ return chart;
+ };
+
+ chart.id = function(_) {
+ if (!arguments.length) return id;
+ id = _;
+ return chart;
+ };
+
+ chart.color = function(_) {
+ if (!arguments.length) return color;
+ color = nv.utils.getColor(_);
+ return chart;
+ };
+
+ chart.valueFormat = function(_) {
+ if (!arguments.length) return valueFormat;
+ valueFormat = _;
+ return chart;
+ };
+
+ chart.labelThreshold = function(_) {
+ if (!arguments.length) return labelThreshold;
+ labelThreshold = _;
+ return chart;
+ };
+ //============================================================
+
+
+ return chart;
+}
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