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+Sencha Documentation Project/**
+ * @class Ext.chart.series.Pie
+ * @extends Ext.chart.series.Series
+ *
+ * Creates a Pie Chart. A Pie Chart is a useful visualization technique to display quantitative information for different
+ * categories that also have a meaning as a whole.
+ * As with all other series, the Pie Series must be appended in the *series* Chart array configuration. See the Chart
+ * documentation for more information. A typical configuration object for the pie series could be:
+ *
+ * {@img Ext.chart.series.Pie/Ext.chart.series.Pie.png Ext.chart.series.Pie chart series}
+ *
+ * var store = Ext.create('Ext.data.JsonStore', {
+ * fields: ['name', 'data1', 'data2', 'data3', 'data4', 'data5'],
+ * data: [
+ * {'name':'metric one', 'data1':10, 'data2':12, 'data3':14, 'data4':8, 'data5':13},
+ * {'name':'metric two', 'data1':7, 'data2':8, 'data3':16, 'data4':10, 'data5':3},
+ * {'name':'metric three', 'data1':5, 'data2':2, 'data3':14, 'data4':12, 'data5':7},
+ * {'name':'metric four', 'data1':2, 'data2':14, 'data3':6, 'data4':1, 'data5':23},
+ * {'name':'metric five', 'data1':27, 'data2':38, 'data3':36, 'data4':13, 'data5':33}
+ * ]
+ * });
+ *
+ * Ext.create('Ext.chart.Chart', {
+ * renderTo: Ext.getBody(),
+ * width: 500,
+ * height: 300,
+ * animate: true,
+ * store: store,
+ * theme: 'Base:gradients',
+ * series: [{
+ * type: 'pie',
+ * field: 'data1',
+ * showInLegend: true,
+ * tips: {
+ * trackMouse: true,
+ * width: 140,
+ * height: 28,
+ * renderer: function(storeItem, item) {
+ * //calculate and display percentage on hover
+ * var total = 0;
+ * store.each(function(rec) {
+ * total += rec.get('data1');
+ * });
+ * this.setTitle(storeItem.get('name') + ': ' + Math.round(storeItem.get('data1') / total * 100) + '%');
+ * }
+ * },
+ * highlight: {
+ * segment: {
+ * margin: 20
+ * }
+ * },
+ * label: {
+ * field: 'name',
+ * display: 'rotate',
+ * contrast: true,
+ * font: '18px Arial'
+ * }
+ * }]
+ * });
+ *
+ * In this configuration we set `pie` as the type for the series, set an object with specific style properties for highlighting options
+ * (triggered when hovering elements). We also set true to `showInLegend` so all the pie slices can be represented by a legend item.
+ * We set `data1` as the value of the field to determine the angle span for each pie slice. We also set a label configuration object
+ * where we set the field name of the store field to be renderer as text for the label. The labels will also be displayed rotated.
+ * We set `contrast` to `true` to flip the color of the label if it is to similar to the background color. Finally, we set the font family
+ * and size through the `font` parameter.
+ *
+ * @xtype pie
+ */
+Ext.define('Ext.chart.series.Pie', {
+
+ /* Begin Definitions */
+
+ alternateClassName: ['Ext.chart.PieSeries', 'Ext.chart.PieChart'],
+
+ extend: 'Ext.chart.series.Series',
+
+ /* End Definitions */
+
+ type: "pie",
+
+ alias: 'series.pie',
+
+ rad: Math.PI / 180,
+
+ /**
+ * @cfg {Number} highlightDuration
+ * The duration for the pie slice highlight effect.
+ */
+ highlightDuration: 150,
+
+ /**
+ * @cfg {String} angleField
+ * The store record field name to be used for the pie angles.
+ * The values bound to this field name must be positive real numbers.
+ * This parameter is required.
+ */
+ angleField: false,
+
+ /**
+ * @cfg {String} lengthField
+ * The store record field name to be used for the pie slice lengths.
+ * The values bound to this field name must be positive real numbers.
+ * This parameter is optional.
+ */
+ lengthField: false,
+
+ /**
+ * @cfg {Boolean|Number} donut
+ * Whether to set the pie chart as donut chart.
+ * Default's false. Can be set to a particular percentage to set the radius
+ * of the donut chart.
+ */
+ donut: false,
+
+ /**
+ * @cfg {Boolean} showInLegend
+ * Whether to add the pie chart elements as legend items. Default's false.
+ */
+ showInLegend: false,
+
+ /**
+ * @cfg {Array} colorSet
+ * An array of color values which will be used, in order, as the pie slice fill colors.
+ */
+
+ /**
+ * @cfg {Object} style
+ * An object containing styles for overriding series styles from Theming.
+ */
+ style: {},
+
+ constructor: function(config) {
+ this.callParent(arguments);
+ var me = this,
+ chart = me.chart,
+ surface = chart.surface,
+ store = chart.store,
+ shadow = chart.shadow, i, l, cfg;
+ Ext.applyIf(me, {
+ highlightCfg: {
+ segment: {
+ margin: 20
+ }
+ }
+ });
+ Ext.apply(me, config, {
+ shadowAttributes: [{
+ "stroke-width": 6,
+ "stroke-opacity": 1,
+ stroke: 'rgb(200, 200, 200)',
+ translate: {
+ x: 1.2,
+ y: 2
+ }
+ },
+ {
+ "stroke-width": 4,
+ "stroke-opacity": 1,
+ stroke: 'rgb(150, 150, 150)',
+ translate: {
+ x: 0.9,
+ y: 1.5
+ }
+ },
+ {
+ "stroke-width": 2,
+ "stroke-opacity": 1,
+ stroke: 'rgb(100, 100, 100)',
+ translate: {
+ x: 0.6,
+ y: 1
+ }
+ }]
+ });
+ me.group = surface.getGroup(me.seriesId);
+ if (shadow) {
+ for (i = 0, l = me.shadowAttributes.length; i < l; i++) {
+ me.shadowGroups.push(surface.getGroup(me.seriesId + '-shadows' + i));
+ }
+ }
+ surface.customAttributes.segment = function(opt) {
+ return me.getSegment(opt);
+ };
+ },
+
+ //@private updates some onbefore render parameters.
+ initialize: function() {
+ var me = this,
+ store = me.chart.substore || me.chart.store;
+ //Add yFields to be used in Legend.js
+ me.yField = [];
+ if (me.label.field) {
+ store.each(function(rec) {
+ me.yField.push(rec.get(me.label.field));
+ });
+ }
+ },
+
+ // @private returns an object with properties for a PieSlice.
+ getSegment: function(opt) {
+ var me = this,
+ rad = me.rad,
+ cos = Math.cos,
+ sin = Math.sin,
+ abs = Math.abs,
+ x = me.centerX,
+ y = me.centerY,
+ x1 = 0, x2 = 0, x3 = 0, x4 = 0,
+ y1 = 0, y2 = 0, y3 = 0, y4 = 0,
+ delta = 1e-2,
+ r = opt.endRho - opt.startRho,
+ startAngle = opt.startAngle,
+ endAngle = opt.endAngle,
+ midAngle = (startAngle + endAngle) / 2 * rad,
+ margin = opt.margin || 0,
+ flag = abs(endAngle - startAngle) > 180,
+ a1 = Math.min(startAngle, endAngle) * rad,
+ a2 = Math.max(startAngle, endAngle) * rad,
+ singleSlice = false;
+
+ x += margin * cos(midAngle);
+ y += margin * sin(midAngle);
+
+ x1 = x + opt.startRho * cos(a1);
+ y1 = y + opt.startRho * sin(a1);
+
+ x2 = x + opt.endRho * cos(a1);
+ y2 = y + opt.endRho * sin(a1);
+
+ x3 = x + opt.startRho * cos(a2);
+ y3 = y + opt.startRho * sin(a2);
+
+ x4 = x + opt.endRho * cos(a2);
+ y4 = y + opt.endRho * sin(a2);
+
+ if (abs(x1 - x3) <= delta && abs(y1 - y3) <= delta) {
+ singleSlice = true;
+ }
+ //Solves mysterious clipping bug with IE
+ if (singleSlice) {
+ return {
+ path: [
+ ["M", x1, y1],
+ ["L", x2, y2],
+ ["A", opt.endRho, opt.endRho, 0, +flag, 1, x4, y4],
+ ["Z"]]
+ };
+ } else {
+ return {
+ path: [
+ ["M", x1, y1],
+ ["L", x2, y2],
+ ["A", opt.endRho, opt.endRho, 0, +flag, 1, x4, y4],
+ ["L", x3, y3],
+ ["A", opt.startRho, opt.startRho, 0, +flag, 0, x1, y1],
+ ["Z"]]
+ };
+ }
+ },
+
+ // @private utility function to calculate the middle point of a pie slice.
+ calcMiddle: function(item) {
+ var me = this,
+ rad = me.rad,
+ slice = item.slice,
+ x = me.centerX,
+ y = me.centerY,
+ startAngle = slice.startAngle,
+ endAngle = slice.endAngle,
+ donut = +me.donut,
+ a1 = Math.min(startAngle, endAngle) * rad,
+ a2 = Math.max(startAngle, endAngle) * rad,
+ midAngle = -(a1 + (a2 - a1) / 2),
+ xm = x + (item.endRho + item.startRho) / 2 * Math.cos(midAngle),
+ ym = y - (item.endRho + item.startRho) / 2 * Math.sin(midAngle);
+
+ item.middle = {
+ x: xm,
+ y: ym
+ };
+ },
+
+ /**
+ * Draws the series for the current chart.
+ */
+ drawSeries: function() {
+ var me = this,
+ store = me.chart.substore || me.chart.store,
+ group = me.group,
+ animate = me.chart.animate,
+ field = me.angleField || me.field || me.xField,
+ lenField = [].concat(me.lengthField),
+ totalLenField = 0,
+ colors = me.colorSet,
+ chart = me.chart,
+ surface = chart.surface,
+ chartBBox = chart.chartBBox,
+ enableShadows = chart.shadow,
+ shadowGroups = me.shadowGroups,
+ shadowAttributes = me.shadowAttributes,
+ lnsh = shadowGroups.length,
+ rad = me.rad,
+ layers = lenField.length,
+ rhoAcum = 0,
+ donut = +me.donut,
+ layerTotals = [],
+ values = {},
+ fieldLength,
+ items = [],
+ passed = false,
+ totalField = 0,
+ maxLenField = 0,
+ cut = 9,
+ defcut = true,
+ angle = 0,
+ seriesStyle = me.seriesStyle,
+ seriesLabelStyle = me.seriesLabelStyle,
+ colorArrayStyle = me.colorArrayStyle,
+ colorArrayLength = colorArrayStyle && colorArrayStyle.length || 0,
+ gutterX = chart.maxGutter[0],
+ gutterY = chart.maxGutter[1],
+ rendererAttributes,
+ shadowGroup,
+ shadowAttr,
+ shadows,
+ shadow,
+ shindex,
+ centerX,
+ centerY,
+ deltaRho,
+ first = 0,
+ slice,
+ slices,
+ sprite,
+ value,
+ item,
+ lenValue,
+ ln,
+ record,
+ i,
+ j,
+ startAngle,
+ endAngle,
+ middleAngle,
+ sliceLength,
+ path,
+ p,
+ spriteOptions, bbox;
+
+ Ext.apply(seriesStyle, me.style || {});
+
+ me.setBBox();
+ bbox = me.bbox;
+
+ //override theme colors
+ if (me.colorSet) {
+ colorArrayStyle = me.colorSet;
+ colorArrayLength = colorArrayStyle.length;
+ }
+
+ //if not store or store is empty then there's nothing to draw
+ if (!store || !store.getCount()) {
+ return;
+ }
+
+ me.unHighlightItem();
+ me.cleanHighlights();
+
+ centerX = me.centerX = chartBBox.x + (chartBBox.width / 2);
+ centerY = me.centerY = chartBBox.y + (chartBBox.height / 2);
+ me.radius = Math.min(centerX - chartBBox.x, centerY - chartBBox.y);
+ me.slices = slices = [];
+ me.items = items = [];
+
+ store.each(function(record, i) {
+ if (this.__excludes && this.__excludes[i]) {
+ //hidden series
+ return;
+ }
+ totalField += +record.get(field);
+ if (lenField[0]) {
+ for (j = 0, totalLenField = 0; j < layers; j++) {
+ totalLenField += +record.get(lenField[j]);
+ }
+ layerTotals[i] = totalLenField;
+ maxLenField = Math.max(maxLenField, totalLenField);
+ }
+ }, this);
+
+ store.each(function(record, i) {
+ if (this.__excludes && this.__excludes[i]) {
+ //hidden series
+ return;
+ }
+ value = record.get(field);
+ middleAngle = angle - 360 * value / totalField / 2;
+ // TODO - Put up an empty circle
+ if (isNaN(middleAngle)) {
+ middleAngle = 360;
+ value = 1;
+ totalField = 1;
+ }
+ // First slice
+ if (!i || first == 0) {
+ angle = 360 - middleAngle;
+ me.firstAngle = angle;
+ middleAngle = angle - 360 * value / totalField / 2;
+ }
+ endAngle = angle - 360 * value / totalField;
+ slice = {
+ series: me,
+ value: value,
+ startAngle: angle,
+ endAngle: endAngle,
+ storeItem: record
+ };
+ if (lenField[0]) {
+ lenValue = layerTotals[i];
+ slice.rho = me.radius * (lenValue / maxLenField);
+ } else {
+ slice.rho = me.radius;
+ }
+ slices[i] = slice;
+ if((slice.startAngle % 360) == (slice.endAngle % 360)) {
+ slice.startAngle -= 0.0001;
+ }
+ angle = endAngle;
+ first++;
+ }, me);
+
+ //do all shadows first.
+ if (enableShadows) {
+ for (i = 0, ln = slices.length; i < ln; i++) {
+ if (this.__excludes && this.__excludes[i]) {
+ //hidden series
+ continue;
+ }
+ slice = slices[i];
+ slice.shadowAttrs = [];
+ for (j = 0, rhoAcum = 0, shadows = []; j < layers; j++) {
+ sprite = group.getAt(i * layers + j);
+ deltaRho = lenField[j] ? store.getAt(i).get(lenField[j]) / layerTotals[i] * slice.rho: slice.rho;
+ //set pie slice properties
+ rendererAttributes = {
+ segment: {
+ startAngle: slice.startAngle,
+ endAngle: slice.endAngle,
+ margin: 0,
+ rho: slice.rho,
+ startRho: rhoAcum + (deltaRho * donut / 100),
+ endRho: rhoAcum + deltaRho
+ }
+ };
+ //create shadows
+ for (shindex = 0, shadows = []; shindex < lnsh; shindex++) {
+ shadowAttr = shadowAttributes[shindex];
+ shadow = shadowGroups[shindex].getAt(i);
+ if (!shadow) {
+ shadow = chart.surface.add(Ext.apply({},
+ {
+ type: 'path',
+ group: shadowGroups[shindex],
+ strokeLinejoin: "round"
+ },
+ rendererAttributes, shadowAttr));
+ }
+ if (animate) {
+ rendererAttributes = me.renderer(shadow, store.getAt(i), Ext.apply({},
+ rendererAttributes, shadowAttr), i, store);
+ me.onAnimate(shadow, {
+ to: rendererAttributes
+ });
+ } else {
+ rendererAttributes = me.renderer(shadow, store.getAt(i), Ext.apply(shadowAttr, {
+ hidden: false
+ }), i, store);
+ shadow.setAttributes(rendererAttributes, true);
+ }
+ shadows.push(shadow);
+ }
+ slice.shadowAttrs[j] = shadows;
+ }
+ }
+ }
+ //do pie slices after.
+ for (i = 0, ln = slices.length; i < ln; i++) {
+ if (this.__excludes && this.__excludes[i]) {
+ //hidden series
+ continue;
+ }
+ slice = slices[i];
+ for (j = 0, rhoAcum = 0; j < layers; j++) {
+ sprite = group.getAt(i * layers + j);
+ deltaRho = lenField[j] ? store.getAt(i).get(lenField[j]) / layerTotals[i] * slice.rho: slice.rho;
+ //set pie slice properties
+ rendererAttributes = Ext.apply({
+ segment: {
+ startAngle: slice.startAngle,
+ endAngle: slice.endAngle,
+ margin: 0,
+ rho: slice.rho,
+ startRho: rhoAcum + (deltaRho * donut / 100),
+ endRho: rhoAcum + deltaRho
+ }
+ }, Ext.apply(seriesStyle, colorArrayStyle && { fill: colorArrayStyle[(layers > 1? j : i) % colorArrayLength] } || {}));
+ item = Ext.apply({},
+ rendererAttributes.segment, {
+ slice: slice,
+ series: me,
+ storeItem: slice.storeItem,
+ index: i
+ });
+ me.calcMiddle(item);
+ if (enableShadows) {
+ item.shadows = slice.shadowAttrs[j];
+ }
+ items[i] = item;
+ // Create a new sprite if needed (no height)
+ if (!sprite) {
+ spriteOptions = Ext.apply({
+ type: "path",
+ group: group,
+ middle: item.middle
+ }, Ext.apply(seriesStyle, colorArrayStyle && { fill: colorArrayStyle[(layers > 1? j : i) % colorArrayLength] } || {}));
+ sprite = surface.add(Ext.apply(spriteOptions, rendererAttributes));
+ }
+ slice.sprite = slice.sprite || [];
+ item.sprite = sprite;
+ slice.sprite.push(sprite);
+ slice.point = [item.middle.x, item.middle.y];
+ if (animate) {
+ rendererAttributes = me.renderer(sprite, store.getAt(i), rendererAttributes, i, store);
+ sprite._to = rendererAttributes;
+ sprite._animating = true;
+ me.onAnimate(sprite, {
+ to: rendererAttributes,
+ listeners: {
+ afteranimate: {
+ fn: function() {
+ this._animating = false;
+ },
+ scope: sprite
+ }
+ }
+ });
+ } else {
+ rendererAttributes = me.renderer(sprite, store.getAt(i), Ext.apply(rendererAttributes, {
+ hidden: false
+ }), i, store);
+ sprite.setAttributes(rendererAttributes, true);
+ }
+ rhoAcum += deltaRho;
+ }
+ }
+
+ // Hide unused bars
+ ln = group.getCount();
+ for (i = 0; i < ln; i++) {
+ if (!slices[(i / layers) >> 0] && group.getAt(i)) {
+ group.getAt(i).hide(true);
+ }
+ }
+ if (enableShadows) {
+ lnsh = shadowGroups.length;
+ for (shindex = 0; shindex < ln; shindex++) {
+ if (!slices[(shindex / layers) >> 0]) {
+ for (j = 0; j < lnsh; j++) {
+ if (shadowGroups[j].getAt(shindex)) {
+ shadowGroups[j].getAt(shindex).hide(true);
+ }
+ }
+ }
+ }
+ }
+ me.renderLabels();
+ me.renderCallouts();
+ },
+
+ // @private callback for when creating a label sprite.
+ onCreateLabel: function(storeItem, item, i, display) {
+ var me = this,
+ group = me.labelsGroup,
+ config = me.label,
+ centerX = me.centerX,
+ centerY = me.centerY,
+ middle = item.middle,
+ endLabelStyle = Ext.apply(me.seriesLabelStyle || {}, config || {});
+
+ return me.chart.surface.add(Ext.apply({
+ 'type': 'text',
+ 'text-anchor': 'middle',
+ 'group': group,
+ 'x': middle.x,
+ 'y': middle.y
+ }, endLabelStyle));
+ },
+
+ // @private callback for when placing a label sprite.
+ onPlaceLabel: function(label, storeItem, item, i, display, animate, index) {
+ var me = this,
+ chart = me.chart,
+ resizing = chart.resizing,
+ config = me.label,
+ format = config.renderer,
+ field = [].concat(config.field),
+ centerX = me.centerX,
+ centerY = me.centerY,
+ middle = item.middle,
+ opt = {
+ x: middle.x,
+ y: middle.y
+ },
+ x = middle.x - centerX,
+ y = middle.y - centerY,
+ from = {},
+ rho = 1,
+ theta = Math.atan2(y, x || 1),
+ dg = theta * 180 / Math.PI,
+ prevDg;
+
+ function fixAngle(a) {
+ if (a < 0) a += 360;
+ return a % 360;
+ }
+
+ label.setAttributes({
+ text: format(storeItem.get(field[index]))
+ }, true);
+
+ switch (display) {
+ case 'outside':
+ rho = Math.sqrt(x * x + y * y) * 2;
+ //update positions
+ opt.x = rho * Math.cos(theta) + centerX;
+ opt.y = rho * Math.sin(theta) + centerY;
+ break;
+
+ case 'rotate':
+ dg = fixAngle(dg);
+ dg = (dg > 90 && dg < 270) ? dg + 180: dg;
+
+ prevDg = label.attr.rotation.degrees;
+ if (prevDg != null && Math.abs(prevDg - dg) > 180) {
+ if (dg > prevDg) {
+ dg -= 360;
+ } else {
+ dg += 360;
+ }
+ dg = dg % 360;
+ } else {
+ dg = fixAngle(dg);
+ }
+ //update rotation angle
+ opt.rotate = {
+ degrees: dg,
+ x: opt.x,
+ y: opt.y
+ };
+ break;
+
+ default:
+ break;
+ }
+ //ensure the object has zero translation
+ opt.translate = {
+ x: 0, y: 0
+ };
+ if (animate && !resizing && (display != 'rotate' || prevDg != null)) {
+ me.onAnimate(label, {
+ to: opt
+ });
+ } else {
+ label.setAttributes(opt, true);
+ }
+ label._from = from;
+ },
+
+ // @private callback for when placing a callout sprite.
+ onPlaceCallout: function(callout, storeItem, item, i, display, animate, index) {
+ var me = this,
+ chart = me.chart,
+ resizing = chart.resizing,
+ config = me.callouts,
+ centerX = me.centerX,
+ centerY = me.centerY,
+ middle = item.middle,
+ opt = {
+ x: middle.x,
+ y: middle.y
+ },
+ x = middle.x - centerX,
+ y = middle.y - centerY,
+ rho = 1,
+ rhoCenter,
+ theta = Math.atan2(y, x || 1),
+ bbox = callout.label.getBBox(),
+ offsetFromViz = 20,
+ offsetToSide = 10,
+ offsetBox = 10,
+ p;
+
+ //should be able to config this.
+ rho = item.endRho + offsetFromViz;
+ rhoCenter = (item.endRho + item.startRho) / 2 + (item.endRho - item.startRho) / 3;
+ //update positions
+ opt.x = rho * Math.cos(theta) + centerX;
+ opt.y = rho * Math.sin(theta) + centerY;
+
+ x = rhoCenter * Math.cos(theta);
+ y = rhoCenter * Math.sin(theta);
+
+ if (chart.animate) {
+ //set the line from the middle of the pie to the box.
+ me.onAnimate(callout.lines, {
+ to: {
+ path: ["M", x + centerX, y + centerY, "L", opt.x, opt.y, "Z", "M", opt.x, opt.y, "l", x > 0 ? offsetToSide: -offsetToSide, 0, "z"]
+ }
+ });
+ //set box position
+ me.onAnimate(callout.box, {
+ to: {
+ x: opt.x + (x > 0 ? offsetToSide: -(offsetToSide + bbox.width + 2 * offsetBox)),
+ y: opt.y + (y > 0 ? ( - bbox.height - offsetBox / 2) : ( - bbox.height - offsetBox / 2)),
+ width: bbox.width + 2 * offsetBox,
+ height: bbox.height + 2 * offsetBox
+ }
+ });
+ //set text position
+ me.onAnimate(callout.label, {
+ to: {
+ x: opt.x + (x > 0 ? (offsetToSide + offsetBox) : -(offsetToSide + bbox.width + offsetBox)),
+ y: opt.y + (y > 0 ? -bbox.height / 4: -bbox.height / 4)
+ }
+ });
+ } else {
+ //set the line from the middle of the pie to the box.
+ callout.lines.setAttributes({
+ path: ["M", x + centerX, y + centerY, "L", opt.x, opt.y, "Z", "M", opt.x, opt.y, "l", x > 0 ? offsetToSide: -offsetToSide, 0, "z"]
+ },
+ true);
+ //set box position
+ callout.box.setAttributes({
+ x: opt.x + (x > 0 ? offsetToSide: -(offsetToSide + bbox.width + 2 * offsetBox)),
+ y: opt.y + (y > 0 ? ( - bbox.height - offsetBox / 2) : ( - bbox.height - offsetBox / 2)),
+ width: bbox.width + 2 * offsetBox,
+ height: bbox.height + 2 * offsetBox
+ },
+ true);
+ //set text position
+ callout.label.setAttributes({
+ x: opt.x + (x > 0 ? (offsetToSide + offsetBox) : -(offsetToSide + bbox.width + offsetBox)),
+ y: opt.y + (y > 0 ? -bbox.height / 4: -bbox.height / 4)
+ },
+ true);
+ }
+ for (p in callout) {
+ callout[p].show(true);
+ }
+ },
+
+ // @private handles sprite animation for the series.
+ onAnimate: function(sprite, attr) {
+ sprite.show();
+ return this.callParent(arguments);
+ },
+
+ isItemInPoint: function(x, y, item, i) {
+ var me = this,
+ cx = me.centerX,
+ cy = me.centerY,
+ abs = Math.abs,
+ dx = abs(x - cx),
+ dy = abs(y - cy),
+ startAngle = item.startAngle,
+ endAngle = item.endAngle,
+ rho = Math.sqrt(dx * dx + dy * dy),
+ angle = Math.atan2(y - cy, x - cx) / me.rad + 360;
+
+ // normalize to the same range of angles created by drawSeries
+ if (angle > me.firstAngle) {
+ angle -= 360;
+ }
+ return (angle <= startAngle && angle > endAngle
+ && rho >= item.startRho && rho <= item.endRho);
+ },
+
+ // @private hides all elements in the series.
+ hideAll: function() {
+ var i, l, shadow, shadows, sh, lsh, sprite;
+ if (!isNaN(this._index)) {
+ this.__excludes = this.__excludes || [];
+ this.__excludes[this._index] = true;
+ sprite = this.slices[this._index].sprite;
+ for (sh = 0, lsh = sprite.length; sh < lsh; sh++) {
+ sprite[sh].setAttributes({
+ hidden: true
+ }, true);
+ }
+ if (this.slices[this._index].shadowAttrs) {
+ for (i = 0, shadows = this.slices[this._index].shadowAttrs, l = shadows.length; i < l; i++) {
+ shadow = shadows[i];
+ for (sh = 0, lsh = shadow.length; sh < lsh; sh++) {
+ shadow[sh].setAttributes({
+ hidden: true
+ }, true);
+ }
+ }
+ }
+ this.drawSeries();
+ }
+ },
+
+ // @private shows all elements in the series.
+ showAll: function() {
+ if (!isNaN(this._index)) {
+ this.__excludes[this._index] = false;
+ this.drawSeries();
+ }
+ },
+
+ /**
+ * Highlight the specified item. If no item is provided the whole series will be highlighted.
+ * @param item {Object} Info about the item; same format as returned by #getItemForPoint
+ */
+ highlightItem: function(item) {
+ var me = this,
+ rad = me.rad;
+ item = item || this.items[this._index];
+
+ //TODO(nico): sometimes in IE itemmouseover is triggered
+ //twice without triggering itemmouseout in between. This
+ //fixes the highlighting bug. Eventually, events should be
+ //changed to trigger one itemmouseout between two itemmouseovers.
+ this.unHighlightItem();
+
+ if (!item || item.sprite && item.sprite._animating) {
+ return;
+ }
+ me.callParent([item]);
+ if (!me.highlight) {
+ return;
+ }
+ if ('segment' in me.highlightCfg) {
+ var highlightSegment = me.highlightCfg.segment,
+ animate = me.chart.animate,
+ attrs, i, shadows, shadow, ln, to, itemHighlightSegment, prop;
+ //animate labels
+ if (me.labelsGroup) {
+ var group = me.labelsGroup,
+ display = me.label.display,
+ label = group.getAt(item.index),
+ middle = (item.startAngle + item.endAngle) / 2 * rad,
+ r = highlightSegment.margin || 0,
+ x = r * Math.cos(middle),
+ y = r * Math.sin(middle);
+
+ //TODO(nico): rounding to 1e-10
+ //gives the right translation. Translation
+ //was buggy for very small numbers. In this
+ //case we're not looking to translate to very small
+ //numbers but not to translate at all.
+ if (Math.abs(x) < 1e-10) {
+ x = 0;
+ }
+ if (Math.abs(y) < 1e-10) {
+ y = 0;
+ }
+
+ if (animate) {
+ label.stopAnimation();
+ label.animate({
+ to: {
+ translate: {
+ x: x,
+ y: y
+ }
+ },
+ duration: me.highlightDuration
+ });
+ }
+ else {
+ label.setAttributes({
+ translate: {
+ x: x,
+ y: y
+ }
+ }, true);
+ }
+ }
+ //animate shadows
+ if (me.chart.shadow && item.shadows) {
+ i = 0;
+ shadows = item.shadows;
+ ln = shadows.length;
+ for (; i < ln; i++) {
+ shadow = shadows[i];
+ to = {};
+ itemHighlightSegment = item.sprite._from.segment;
+ for (prop in itemHighlightSegment) {
+ if (! (prop in highlightSegment)) {
+ to[prop] = itemHighlightSegment[prop];
+ }
+ }
+ attrs = {
+ segment: Ext.applyIf(to, me.highlightCfg.segment)
+ };
+ if (animate) {
+ shadow.stopAnimation();
+ shadow.animate({
+ to: attrs,
+ duration: me.highlightDuration
+ });
+ }
+ else {
+ shadow.setAttributes(attrs, true);
+ }
+ }
+ }
+ }
+ },
+
+ /**
+ * un-highlights the specified item. If no item is provided it will un-highlight the entire series.
+ * @param item {Object} Info about the item; same format as returned by #getItemForPoint
+ */
+ unHighlightItem: function() {
+ var me = this;
+ if (!me.highlight) {
+ return;
+ }
+
+ if (('segment' in me.highlightCfg) && me.items) {
+ var items = me.items,
+ animate = me.chart.animate,
+ shadowsEnabled = !!me.chart.shadow,
+ group = me.labelsGroup,
+ len = items.length,
+ i = 0,
+ j = 0,
+ display = me.label.display,
+ shadowLen, p, to, ihs, hs, sprite, shadows, shadow, item, label, attrs;
+
+ for (; i < len; i++) {
+ item = items[i];
+ if (!item) {
+ continue;
+ }
+ sprite = item.sprite;
+ if (sprite && sprite._highlighted) {
+ //animate labels
+ if (group) {
+ label = group.getAt(item.index);
+ attrs = Ext.apply({
+ translate: {
+ x: 0,
+ y: 0
+ }
+ },
+ display == 'rotate' ? {
+ rotate: {
+ x: label.attr.x,
+ y: label.attr.y,
+ degrees: label.attr.rotation.degrees
+ }
+ }: {});
+ if (animate) {
+ label.stopAnimation();
+ label.animate({
+ to: attrs,
+ duration: me.highlightDuration
+ });
+ }
+ else {
+ label.setAttributes(attrs, true);
+ }
+ }
+ if (shadowsEnabled) {
+ shadows = item.shadows;
+ shadowLen = shadows.length;
+ for (; j < shadowLen; j++) {
+ to = {};
+ ihs = item.sprite._to.segment;
+ hs = item.sprite._from.segment;
+ Ext.apply(to, hs);
+ for (p in ihs) {
+ if (! (p in hs)) {
+ to[p] = ihs[p];
+ }
+ }
+ shadow = shadows[j];
+ if (animate) {
+ shadow.stopAnimation();
+ shadow.animate({
+ to: {
+ segment: to
+ },
+ duration: me.highlightDuration
+ });
+ }
+ else {
+ shadow.setAttributes({ segment: to }, true);
+ }
+ }
+ }
+ }
+ }
+ }
+ me.callParent(arguments);
+ },
+
+ /**
+ * Returns the color of the series (to be displayed as color for the series legend item).
+ * @param item {Object} Info about the item; same format as returned by #getItemForPoint
+ */
+ getLegendColor: function(index) {
+ var me = this;
+ return me.colorArrayStyle[index % me.colorArrayStyle.length];
+ }
+});
+
+
\ No newline at end of file