2015-05-27 18:28:00 +02:00
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(function() {
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"use strict";
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2014-06-29 19:36:25 +02:00
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2015-05-27 18:28:00 +02:00
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var root = this,
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Chart = root.Chart,
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helpers = Chart.helpers;
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2014-06-29 19:36:25 +02:00
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2015-05-27 18:28:00 +02:00
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Chart.Type.extend({
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name: "Radar",
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defaults: {
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2014-06-29 19:36:25 +02:00
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2015-05-27 18:28:00 +02:00
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scale: {
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scaleType: "radialLinear",
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display: true,
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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//Boolean - Whether to animate scaling the chart from the centre
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animate: false,
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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lineArc: false,
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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// grid line settings
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gridLines: {
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show: true,
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color: "rgba(0, 0, 0, 0.05)",
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lineWidth: 1,
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},
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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angleLines: {
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show: true,
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color: "rgba(0,0,0,.1)",
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lineWidth: 1
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},
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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// scale numbers
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beginAtZero: true,
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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// label settings
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labels: {
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show: true,
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template: "<%=value%>",
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fontSize: 12,
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fontStyle: "normal",
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fontColor: "#666",
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fontFamily: "Helvetica Neue",
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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//Boolean - Show a backdrop to the scale label
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showLabelBackdrop: true,
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2015-05-24 20:33:12 +02:00
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2015-05-27 18:28:00 +02:00
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//String - The colour of the label backdrop
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backdropColor: "rgba(255,255,255,0.75)",
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//Number - The backdrop padding above & below the label in pixels
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backdropPaddingY: 2,
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//Number - The backdrop padding to the side of the label in pixels
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backdropPaddingX: 2,
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},
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pointLabels: {
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//String - Point label font declaration
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fontFamily: "'Arial'",
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//String - Point label font weight
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fontStyle: "normal",
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//Number - Point label font size in pixels
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fontSize: 10,
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//String - Point label font colour
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fontColor: "#666",
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},
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},
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line: {
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//Boolean - Whether to show a dot for each point
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show: true,
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//Number - Pixel width of dot border
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borderWidth: 1,
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backgroundColor: Chart.defaults.global.defaultColor,
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borderColor: Chart.defaults.global.defaultColor,
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//Number - amount extra to add to the radius to cater for hit detection outside the drawn
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hitRadius: 20,
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//Number - Tension of the bezier curve between points. Use 0 to turn off bezier tension
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tension: 0.4,
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},
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point: {
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//Boolean - Whether to show a dot for each point
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show: true,
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//Number - Radius of each dot in pixels
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radius: 3,
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//Number - Pixel width of dot border
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borderWidth: 1,
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//Number - Pixel width of on hover
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hoverRadius: 5,
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//Number - Pixel width of dot border on hover
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hoverBorderWidth: 2,
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backgroundColor: Chart.defaults.global.defaultColor,
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borderColor: Chart.defaults.global.defaultColor,
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//Number - amount extra to add to the radius to cater for hit detection outside the drawn
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hitRadius: 20,
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},
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//String - A legend template
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legendTemplate: "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
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},
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initialize: function() {
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this.buildScale(this.data);
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// Events
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helpers.bindEvents(this, this.options.events, this.events);
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var _this = this;
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//Create a new line and its points for each dataset and piece of data
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helpers.each(this.data.datasets, function(dataset, datasetIndex) {
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dataset.metaDataset = new Chart.Line();
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dataset.metaData = [];
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helpers.each(dataset.data, function(dataPoint, index) {
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dataset.metaData.push(new Chart.Point());
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}, this);
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// The line chart only supports a single x axis because the x axis is always a dataset axis
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}, this);
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// Build and fit the scale. Needs to happen after the axis IDs have been set
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this.buildScale();
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Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height);
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// Set defaults for lines
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helpers.each(this.data.datasets, function(dataset, datasetIndex) {
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helpers.extend(dataset.metaDataset, {
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_points: dataset.metaData,
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_datasetIndex: datasetIndex,
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_chart: this.chart,
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loop: true
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});
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// Fill in dataset defaults from options
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helpers.extend(dataset, helpers.merge(this.options, dataset));
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// Copy to view modele
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dataset.metaDataset.save();
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}, this);
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// Set defaults for points
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this.eachElement(function(point, index, dataset, datasetIndex) {
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helpers.extend(point, {
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_datasetIndex: datasetIndex,
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_index: index,
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_chart: this.chart,
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display: this.options.pointDot,
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x: this.scale.xCenter,
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y: this.scale.yCenter,
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});
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// Default bezier control points
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helpers.extend(point, {
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controlPointPreviousX: this.scale.xCenter,
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controlPointPreviousY: this.scale.yCenter,
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controlPointNextX: this.scale.xCenter,
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controlPointNextY: this.scale.yCenter,
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});
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// Copy to view model
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point.save();
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}, this);
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// Create tooltip instance exclusively for this chart with some defaults.
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this.tooltip = new Chart.Tooltip({
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_chart: this.chart,
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_data: this.data,
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_options: this.options,
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}, this);
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this.update();
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},
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/*getPointsAtEvent: function(evt) {
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var mousePosition = helpers.getRelativePosition(evt),
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fromCenter = helpers.getAngleFromPoint({
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x: this.scale.xCenter,
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y: this.scale.yCenter
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}, mousePosition);
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var anglePerIndex = (Math.PI * 2) / this.scale.valuesCount,
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pointIndex = Math.round((fromCenter.angle - Math.PI * 1.5) / anglePerIndex),
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activePointsCollection = [];
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// If we're at the top, make the pointIndex 0 to get the first of the array.
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if (pointIndex >= this.scale.valuesCount || pointIndex < 0) {
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pointIndex = 0;
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}
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if (fromCenter.distance <= this.scale.drawingArea) {
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helpers.each(this.data.datasets, function(dataset) {
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activePointsCollection.push(dataset.points[pointIndex]);
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});
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}
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return activePointsCollection;
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},*/
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nextPoint: function(collection, index) {
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return collection[index - 1] || collection[collection.length - 1];
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},
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previousPoint: function(collection, index) {
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return collection[index + 1] || collection[0];
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},
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buildScale: function() {
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var self = this;
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var ScaleConstructor = Chart.scales.getScaleConstructor(this.options.scale.scaleType);
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this.scale = new ScaleConstructor({
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options: this.options.scale,
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height: this.chart.height,
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width: this.chart.width,
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xCenter: this.chart.width / 2,
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yCenter: this.chart.height / 2,
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ctx: this.chart.ctx,
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labels: this.data.labels,
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valuesCount: this.data.datasets[0].data.length,
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calculateRange: function() {
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this.min = null;
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this.max = null;
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helpers.each(self.data.datasets, function(dataset) {
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2015-05-24 20:33:12 +02:00
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if (dataset.yAxisID === this.id) {
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helpers.each(dataset.data, function(value, index) {
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if (this.min === null) {
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this.min = value;
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} else if (value < this.min) {
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this.min = value;
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}
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2015-05-27 18:28:00 +02:00
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2015-05-24 20:33:12 +02:00
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if (this.max === null) {
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this.max = value;
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} else if (value > this.max) {
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this.max = value;
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}
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}, this);
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}
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}, this);
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2015-05-27 18:28:00 +02:00
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}
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});
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this.scale.setScaleSize();
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this.scale.calculateRange();
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this.scale.generateTicks();
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this.scale.buildYLabels();
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},
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update: function() {
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// Update the lines
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this.eachDataset(function(dataset, datasetIndex) {
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helpers.extend(dataset.metaDataset, {
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// Utility
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_datasetIndex: datasetIndex,
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// Data
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_points: dataset.metaData,
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// Geometry
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scaleTop: this.scale.top,
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scaleBottom: this.scale.bottom,
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scaleZero: this.scale.getPointPosition(0),
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// Appearance
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tension: dataset.tension || this.options.line.tension,
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backgroundColor: dataset.backgroundColor || this.options.backgroundColor,
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borderWidth: dataset.borderWidth || this.options.borderWidth,
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borderColor: dataset.borderColor || this.options.borderColor,
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});
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dataset.metaDataset.pivot();
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}, this);
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// Update the points
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this.eachElement(function(point, index, dataset, datasetIndex) {
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var pointPosition = this.scale.getPointPosition(index, this.scale.calculateCenterOffset(this.data.datasets[datasetIndex].data[index]));
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helpers.extend(point, {
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// Utility
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_chart: this.chart,
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_datasetIndex: datasetIndex,
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_index: index,
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// Data
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label: this.data.labels[index],
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value: this.data.datasets[datasetIndex].data[index],
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datasetLabel: this.data.datasets[datasetIndex].label,
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// Geometry
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offsetGridLines: this.options.offsetGridLines,
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x: pointPosition.x,
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y: pointPosition.y,
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tension: this.data.datasets[datasetIndex].metaDataset.tension,
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// Appearnce
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radius: this.data.datasets[datasetIndex].pointRadius || this.options.point.radius,
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backgroundColor: this.data.datasets[datasetIndex].pointBackgroundColor || this.options.point.backgroundColor,
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borderWidth: this.data.datasets[datasetIndex].pointBorderWidth || this.options.pointsborderWidth,
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// Tooltip
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hoverRadius: this.data.datasets[datasetIndex].pointHitRadius || this.options.point.hitRadius,
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});
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}, this);
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// Update control points for the bezier curve
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this.eachElement(function(point, index, dataset, datasetIndex) {
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var controlPoints = helpers.splineCurve(
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this.previousPoint(dataset, index),
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point,
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this.nextPoint(dataset, index),
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point.tension
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);
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point.controlPointPreviousX = controlPoints.previous.x;
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point.controlPointNextX = controlPoints.next.x;
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// Prevent the bezier going outside of the bounds of the graph
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// Cap puter bezier handles to the upper/lower scale bounds
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if (controlPoints.next.y > this.chartArea.bottom) {
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point.controlPointNextY = this.chartArea.bottom;
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} else if (controlPoints.next.y < this.chartArea.top) {
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point.controlPointNextY = this.chartArea.top;
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} else {
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point.controlPointNextY = controlPoints.next.y;
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}
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// Cap inner bezier handles to the upper/lower scale bounds
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if (controlPoints.previous.y > this.chartArea.bottom) {
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point.controlPointPreviousY = this.chartArea.bottom;
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} else if (controlPoints.previous.y < this.chartArea.top) {
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point.controlPointPreviousY = this.chartArea.top;
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} else {
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point.controlPointPreviousY = controlPoints.previous.y;
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}
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// Now pivot the point for animation
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point.pivot();
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}, this);
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this.render();
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},
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draw: function(ease) {
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var easingDecimal = ease || 1;
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this.clear();
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// reverse for-loop for proper stacking
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for (var i = this.data.datasets.length - 1; i >= 0; i--) {
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var dataset = this.data.datasets[i];
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var datasetIndex = i;
|
|
|
|
|
|
|
|
// Transition Point Locations
|
|
|
|
helpers.each(dataset.metaData, function(point, index) {
|
|
|
|
point.transition(easingDecimal);
|
|
|
|
}, this);
|
|
|
|
|
|
|
|
// Transition and Draw the line
|
|
|
|
dataset.metaDataset.transition(easingDecimal).draw();
|
|
|
|
|
|
|
|
// Draw the points
|
|
|
|
helpers.each(dataset.metaData, function(point) {
|
|
|
|
point.draw();
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
// Draw all the scales
|
|
|
|
this.scale.draw(this.chartArea);
|
|
|
|
|
|
|
|
// Finally draw the tooltip
|
|
|
|
this.tooltip.transition(easingDecimal).draw();
|
|
|
|
|
|
|
|
},
|
|
|
|
events: function(e) {
|
|
|
|
|
|
|
|
// If exiting chart
|
|
|
|
if (e.type == 'mouseout') {
|
|
|
|
return this;
|
|
|
|
}
|
|
|
|
|
|
|
|
this.lastActive = this.lastActive || [];
|
|
|
|
|
|
|
|
// Find Active Elements
|
|
|
|
this.active = function() {
|
|
|
|
switch (this.options.hover.mode) {
|
|
|
|
case 'single':
|
|
|
|
return this.getElementAtEvent(e);
|
|
|
|
case 'label':
|
|
|
|
return this.getElementsAtEvent(e);
|
|
|
|
case 'dataset':
|
|
|
|
return this.getDatasetAtEvent(e);
|
|
|
|
default:
|
|
|
|
return e;
|
|
|
|
}
|
|
|
|
}.call(this);
|
|
|
|
|
|
|
|
// On Hover hook
|
|
|
|
if (this.options.onHover) {
|
|
|
|
this.options.onHover.call(this, this.active);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (e.type == 'mouseup' || e.type == 'click') {
|
|
|
|
if (this.options.onClick) {
|
|
|
|
this.options.onClick.call(this, e, this.active);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
var dataset;
|
|
|
|
// Remove styling for last active (even if it may still be active)
|
|
|
|
if (this.lastActive.length) {
|
|
|
|
switch (this.options.hover.mode) {
|
|
|
|
case 'single':
|
|
|
|
dataset = this.data.datasets[this.lastActive[0]._datasetIndex];
|
|
|
|
|
|
|
|
this.lastActive[0].radius = dataset.pointRadius;
|
|
|
|
this.lastActive[0].backgroundColor = dataset.pointBackgroundColor;
|
|
|
|
this.lastActive[0].borderColor = dataset.pointBorderColor;
|
|
|
|
this.lastActive[0].borderWidth = dataset.pointBorderWidth;
|
|
|
|
break;
|
|
|
|
case 'label':
|
|
|
|
for (var i = 0; i < this.lastActive.length; i++) {
|
|
|
|
dataset = this.data.datasets[this.lastActive[i]._datasetIndex];
|
|
|
|
|
|
|
|
this.lastActive[i].radius = dataset.pointRadius;
|
|
|
|
this.lastActive[i].backgroundColor = dataset.pointBackgroundColor;
|
|
|
|
this.lastActive[i].borderColor = dataset.pointBorderColor;
|
|
|
|
this.lastActive[i].borderWidth = dataset.pointBorderWidth;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'dataset':
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
// Don't change anything
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Built in hover styling
|
|
|
|
if (this.active.length && this.options.hover.mode) {
|
|
|
|
switch (this.options.hover.mode) {
|
|
|
|
case 'single':
|
|
|
|
dataset = this.data.datasets[this.active[0]._datasetIndex];
|
|
|
|
|
|
|
|
this.active[0].radius = dataset.pointHoverRadius || dataset.pointRadius + 2;
|
|
|
|
this.active[0].backgroundColor = dataset.pointHoverBackgroundColor || helpers.color(dataset.pointBackgroundColor).saturate(0.5).darken(0.35).rgbString();
|
|
|
|
this.active[0].borderColor = dataset.pointHoverBorderColor || helpers.color(dataset.pointBorderColor).saturate(0.5).darken(0.35).rgbString();
|
|
|
|
this.active[0].borderWidth = dataset.pointHoverBorderWidth || dataset.pointBorderWidth + 2;
|
|
|
|
break;
|
|
|
|
case 'label':
|
|
|
|
for (var i = 0; i < this.active.length; i++) {
|
|
|
|
dataset = this.data.datasets[this.active[i]._datasetIndex];
|
|
|
|
|
|
|
|
this.active[i].radius = dataset.pointHoverRadius || dataset.pointRadius + 2;
|
|
|
|
this.active[i].backgroundColor = dataset.pointHoverBackgroundColor || helpers.color(dataset.pointBackgroundColor).saturate(0.5).darken(0.35).rgbString();
|
|
|
|
this.active[i].borderColor = dataset.pointHoverBorderColor || helpers.color(dataset.pointBorderColor).saturate(0.5).darken(0.35).rgbString();
|
|
|
|
this.active[i].borderWidth = dataset.pointHoverBorderWidth || dataset.pointBorderWidth + 2;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'dataset':
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
// Don't change anything
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Built in Tooltips
|
|
|
|
if (this.options.tooltips.enabled) {
|
|
|
|
|
|
|
|
// The usual updates
|
|
|
|
this.tooltip.initialize();
|
|
|
|
|
|
|
|
// Active
|
|
|
|
if (this.active.length) {
|
|
|
|
helpers.extend(this.tooltip, {
|
|
|
|
opacity: 1,
|
|
|
|
_active: this.active,
|
|
|
|
});
|
|
|
|
|
|
|
|
this.tooltip.update();
|
|
|
|
} else {
|
|
|
|
// Inactive
|
|
|
|
helpers.extend(this.tooltip, {
|
|
|
|
opacity: 0,
|
|
|
|
});
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Hover animations
|
|
|
|
this.tooltip.pivot();
|
|
|
|
|
|
|
|
if (!this.animating) {
|
|
|
|
var changed;
|
|
|
|
|
|
|
|
helpers.each(this.active, function(element, index) {
|
|
|
|
if (element !== this.lastActive[index]) {
|
|
|
|
changed = true;
|
|
|
|
}
|
|
|
|
}, this);
|
|
|
|
|
|
|
|
// If entering, leaving, or changing elements, animate the change via pivot
|
|
|
|
if ((!this.lastActive.length && this.active.length) ||
|
|
|
|
(this.lastActive.length && !this.active.length) ||
|
|
|
|
(this.lastActive.length && this.active.length && changed)) {
|
|
|
|
|
|
|
|
this.stop();
|
|
|
|
this.render(this.options.hoverAnimationDuration);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Remember Last Active
|
|
|
|
this.lastActive = this.active;
|
|
|
|
return this;
|
|
|
|
},
|
|
|
|
|
|
|
|
});
|
2014-06-29 19:36:25 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2015-02-24 20:19:01 +01:00
|
|
|
}).call(this);
|