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https://github.com/chartjs/Chart.js.git
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Merge pull request #1204 from etimberg/feature/v2.0-scale-refactor
Scatter chart derives from line chart
This commit is contained in:
commit
61eea7f4a1
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@ -30,7 +30,6 @@
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// scale numbers
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beginAtZero: false,
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integersOnly: false,
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override: null,
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// label settings
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@ -62,7 +61,6 @@
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// scale numbers
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beginAtZero: false,
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integersOnly: false,
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override: null,
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// label settings
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@ -88,463 +86,8 @@
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};
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Chart.Type.extend({
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Chart.types.Line.extend({
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name: "Scatter",
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defaults: defaultConfig,
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initialize: function() {
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// Events
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helpers.bindEvents(this, this.options.events, this.events);
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//Custom Point Defaults
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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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_chart: this.chart,
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_datasetIndex: datasetIndex,
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_points: dataset.metaData,
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});
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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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_datasetIndex: datasetIndex,
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_index: index,
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_chart: this.chart,
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_model: {
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x: 0, //xScale.getPixelForValue(null, index, true),
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y: 0, //this.chartArea.bottom,
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},
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}));
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}, this);
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// The line chart onlty supports a single x axis because the x axis is always a dataset axis
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if (!dataset.xAxisID) {
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dataset.xAxisID = this.options.scales.xAxes[0].id;
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}
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if (!dataset.yAxisID) {
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dataset.yAxisID = this.options.scales.yAxes[0].id;
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}
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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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// 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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// Need to fit scales before we reset elements.
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Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height);
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// Reset so that we animation from the baseline
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this.resetElements();
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// Update that shiz
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this.update();
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},
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nextPoint: function(collection, index) {
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return collection[index + 1] || collection[index];
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},
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previousPoint: function(collection, index) {
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return collection[index - 1] || collection[index];
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},
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resetElements: function() {
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// Update the points
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this.eachElement(function(point, index, dataset, datasetIndex) {
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var xScale = this.scales[this.data.datasets[datasetIndex].xAxisID];
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var yScale = this.scales[this.data.datasets[datasetIndex].yAxisID];
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var yScalePoint;
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if (yScale.min < 0 && yScale.max < 0) {
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// all less than 0. use the top
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yScalePoint = yScale.getPixelForValue(yScale.max);
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} else if (yScale.min > 0 && yScale.max > 0) {
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yScalePoint = yScale.getPixelForValue(yScale.min);
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} else {
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yScalePoint = yScale.getPixelForValue(0);
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}
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helpers.extend(point, {
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// Utility
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_chart: this.chart,
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_xScale: xScale,
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_yScale: yScale,
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_datasetIndex: datasetIndex,
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_index: index,
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// Desired view properties
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_model: {
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x: xScale.getPixelForValue(this.data.datasets[datasetIndex].data[index].x), // value not used in dataset scale, but we want a consistent API between scales
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y: yScalePoint,
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// Appearance
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tension: point.custom && point.custom.tension ? point.custom.tension : this.options.elements.line.tension,
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radius: point.custom && point.custom.radius ? point.custom.pointRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointRadius, index, this.options.elements.point.radius),
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backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBackgroundColor, index, this.options.elements.point.backgroundColor),
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borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderColor, index, this.options.elements.point.borderColor),
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borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderWidth, index, this.options.elements.point.borderWidth),
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skip: (this.data.datasets[datasetIndex].data[index] === null) || (this.data.datasets[datasetIndex].data[index].x === null) || (this.data.datasets[datasetIndex].data[index].y === null),
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// Tooltip
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hoverRadius: point.custom && point.custom.hoverRadius ? point.custom.hoverRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointHitRadius, index, this.options.elements.point.hitRadius),
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},
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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)._model,
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point._model,
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this.nextPoint(dataset, index)._model,
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point._model.tension
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);
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point._model.controlPointPreviousX = controlPoints.previous.x;
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point._model.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._model.controlPointNextY = this.chartArea.bottom;
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} else if (controlPoints.next.y < this.chartArea.top) {
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point._model.controlPointNextY = this.chartArea.top;
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} else {
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point._model.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._model.controlPointPreviousY = this.chartArea.bottom;
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} else if (controlPoints.previous.y < this.chartArea.top) {
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point._model.controlPointPreviousY = this.chartArea.top;
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} else {
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point._model.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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},
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update: function() {
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Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height);
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// Update the lines
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this.eachDataset(function(dataset, datasetIndex) {
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var yScale = this.scales[dataset.yAxisID];
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var scaleBase;
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if (yScale.min < 0 && yScale.max < 0) {
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scaleBase = yScale.getPixelForValue(yScale.max);
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} else if (yScale.min > 0 && yScale.max > 0) {
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scaleBase = yScale.getPixelForValue(yScale.min);
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} else {
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scaleBase = yScale.getPixelForValue(0);
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}
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helpers.extend(dataset.metaDataset, {
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// Utility
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_scale: yScale,
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_datasetIndex: datasetIndex,
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// Data
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_children: dataset.metaData,
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// Model
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_model: {
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// Appearance
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tension: dataset.tension || this.options.elements.line.tension,
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backgroundColor: dataset.backgroundColor || this.options.elements.line.backgroundColor,
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borderWidth: dataset.borderWidth || this.options.elements.line.borderWidth,
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borderColor: dataset.borderColor || this.options.elements.line.borderColor,
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fill: dataset.fill !== undefined ? dataset.fill : this.options.elements.line.fill, // use the value from the dataset if it was provided. else fall back to the default
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skipNull: dataset.skipNull !== undefined ? dataset.skipNull : this.options.elements.line.skipNull,
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drawNull: dataset.drawNull !== undefined ? dataset.drawNull : this.options.elements.line.drawNull,
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// Scale
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scaleTop: yScale.top,
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scaleBottom: yScale.bottom,
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scaleZero: scaleBase,
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},
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});
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dataset.metaDataset.pivot();
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});
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// Update the points
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this.eachElement(function(point, index, dataset, datasetIndex) {
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var xScale = this.scales[this.data.datasets[datasetIndex].xAxisID];
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var yScale = this.scales[this.data.datasets[datasetIndex].yAxisID];
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helpers.extend(point, {
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// Utility
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_chart: this.chart,
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_xScale: xScale,
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_yScale: yScale,
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_datasetIndex: datasetIndex,
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_index: index,
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// Desired view properties
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_model: {
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x: xScale.getPixelForValue(this.data.datasets[datasetIndex].data[index].x),
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y: yScale.getPixelForValue(this.data.datasets[datasetIndex].data[index].y),
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// Appearance
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tension: point.custom && point.custom.tension ? point.custom.tension : this.options.elements.line.tension,
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radius: point.custom && point.custom.radius ? point.custom.pointRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointRadius, index, this.options.elements.point.radius),
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backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBackgroundColor, index, this.options.elements.point.backgroundColor),
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borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderColor, index, this.options.elements.point.borderColor),
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borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderWidth, index, this.options.elements.point.borderWidth),
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skip: (this.data.datasets[datasetIndex].data[index] === null) || (this.data.datasets[datasetIndex].data[index].x === null) || (this.data.datasets[datasetIndex].data[index].y === null),
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// Tooltip
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hoverRadius: point.custom && point.custom.hoverRadius ? point.custom.hoverRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointHitRadius, index, this.options.elements.point.hitRadius),
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},
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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)._model,
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point._model,
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this.nextPoint(dataset, index)._model,
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point._model.tension
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);
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point._model.controlPointPreviousX = controlPoints.previous.x;
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point._model.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._model.controlPointNextY = this.chartArea.bottom;
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} else if (controlPoints.next.y < this.chartArea.top) {
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point._model.controlPointNextY = this.chartArea.top;
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} else {
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point._model.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._model.controlPointPreviousY = this.chartArea.bottom;
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} else if (controlPoints.previous.y < this.chartArea.top) {
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point._model.controlPointPreviousY = this.chartArea.top;
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} else {
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point._model.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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buildScale: function() {
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// Map of scale ID to scale object so we can lookup later
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this.scales = {};
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helpers.each(this.options.scales.xAxes, function(xAxisOptions) {
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var ScaleClass = Chart.scales.getScaleConstructor(xAxisOptions.type);
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var scale = new ScaleClass({
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ctx: this.chart.ctx,
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options: xAxisOptions,
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data: this.data,
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id: xAxisOptions.id,
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});
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this.scales[scale.id] = scale;
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}, this);
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helpers.each(this.options.scales.yAxes, function(yAxisOptions) {
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var ScaleClass = Chart.scales.getScaleConstructor(yAxisOptions.type);
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var scale = new ScaleClass({
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ctx: this.chart.ctx,
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options: yAxisOptions,
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data: this.data,
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id: yAxisOptions.id,
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});
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this.scales[scale.id] = scale;
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}, this);
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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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// Draw all the scales
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helpers.each(this.scales, function(scale) {
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scale.draw(this.chartArea);
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}, this);
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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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// Transition Point Locations
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helpers.each(dataset.metaData, function(point, index) {
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point.transition(easingDecimal);
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}, this);
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// Transition and Draw the line
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dataset.metaDataset.transition(easingDecimal).draw();
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// Draw the points
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helpers.each(dataset.metaData, function(point) {
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point.draw();
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});
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}
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// Finally draw the tooltip
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this.tooltip.transition(easingDecimal).draw();
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},
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events: function(e) {
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// If exiting chart
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if (e.type == 'mouseout') {
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return this;
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}
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this.lastActive = this.lastActive || [];
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// Find Active Elements
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this.active = function() {
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switch (this.options.hover.mode) {
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case 'single':
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return this.getElementAtEvent(e);
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case 'label':
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return this.getElementsAtEvent(e);
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case 'dataset':
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return this.getDatasetAtEvent(e);
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default:
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return e;
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}
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}.call(this);
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// On Hover hook
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if (this.options.hover.onHover) {
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this.options.hover.onHover.call(this, this.active);
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}
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var dataset;
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var index;
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// Remove styling for last active (even if it may still be active)
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if (this.lastActive.length) {
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switch (this.options.hover.mode) {
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case 'single':
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dataset = this.data.datasets[this.lastActive[0]._datasetIndex];
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index = this.lastActive[0]._index;
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this.lastActive[0]._model.radius = this.lastActive[0].custom && this.lastActive[0].custom.radius ? this.lastActive[0].custom.pointRadius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, this.options.elements.point.radius);
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this.lastActive[0]._model.backgroundColor = this.lastActive[0].custom && this.lastActive[0].custom.backgroundColor ? this.lastActive[0].custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, this.options.elements.point.backgroundColor);
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this.lastActive[0]._model.borderColor = this.lastActive[0].custom && this.lastActive[0].custom.borderColor ? this.lastActive[0].custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, this.options.elements.point.borderColor);
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this.lastActive[0]._model.borderWidth = this.lastActive[0].custom && this.lastActive[0].custom.borderWidth ? this.lastActive[0].custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, this.options.elements.point.borderWidth);
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break;
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case 'label':
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for (var i = 0; i < this.lastActive.length; i++) {
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dataset = this.data.datasets[this.lastActive[i]._datasetIndex];
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index = this.lastActive[i]._index;
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this.lastActive[i]._model.radius = this.lastActive[i].custom && this.lastActive[i].custom.radius ? this.lastActive[i].custom.pointRadius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, this.options.elements.point.radius);
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this.lastActive[i]._model.backgroundColor = this.lastActive[i].custom && this.lastActive[i].custom.backgroundColor ? this.lastActive[i].custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, this.options.elements.point.backgroundColor);
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this.lastActive[i]._model.borderColor = this.lastActive[i].custom && this.lastActive[i].custom.borderColor ? this.lastActive[i].custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, this.options.elements.point.borderColor);
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this.lastActive[i]._model.borderWidth = this.lastActive[i].custom && this.lastActive[i].custom.borderWidth ? this.lastActive[i].custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, this.options.elements.point.borderWidth);
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}
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break;
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case 'dataset':
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break;
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default:
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// Don't change anything
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}
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||||
}
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// Built in hover styling
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if (this.active.length && this.options.hover.mode) {
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switch (this.options.hover.mode) {
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case 'single':
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dataset = this.data.datasets[this.active[0]._datasetIndex];
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index = this.active[0]._index;
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this.active[0]._model.radius = this.active[0].custom && this.active[0].custom.hoverRadius ? this.active[0].custom.hoverRadius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.active[0]._model.radius + 1);
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this.active[0]._model.backgroundColor = this.active[0].custom && this.active[0].custom.hoverBackgroundColor ? this.active[0].custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.color(this.active[0]._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
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this.active[0]._model.borderColor = this.active[0].custom && this.active[0].custom.hoverBorderColor ? this.active[0].custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.color(this.active[0]._model.borderColor).saturate(0.5).darken(0.1).rgbString());
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||||
this.active[0]._model.borderWidth = this.active[0].custom && this.active[0].custom.hoverBorderWidth ? this.active[0].custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, this.active[0]._model.borderWidth);
|
||||
break;
|
||||
case 'label':
|
||||
for (var i = 0; i < this.active.length; i++) {
|
||||
dataset = this.data.datasets[this.active[i]._datasetIndex];
|
||||
index = this.active[i]._index;
|
||||
|
||||
this.active[i]._model.radius = this.active[i].custom && this.active[i].custom.hoverRadius ? this.active[i].custom.hoverRadius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.active[i]._model.radius + 1);
|
||||
this.active[i]._model.backgroundColor = this.active[i].custom && this.active[i].custom.hoverBackgroundColor ? this.active[i].custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.color(this.active[i]._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
|
||||
this.active[i]._model.borderColor = this.active[i].custom && this.active[i].custom.hoverBorderColor ? this.active[i].custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.color(this.active[i]._model.borderColor).saturate(0.5).darken(0.1).rgbString());
|
||||
this.active[i]._model.borderWidth = this.active[i].custom && this.active[i].custom.hoverBorderWidth ? this.active[i].custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, this.active[i]._model.borderWidth);
|
||||
}
|
||||
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) {
|
||||
this.tooltip._model.opacity = 1;
|
||||
|
||||
helpers.extend(this.tooltip, {
|
||||
_active: this.active,
|
||||
});
|
||||
|
||||
this.tooltip.update();
|
||||
} else {
|
||||
// Inactive
|
||||
this.tooltip._model.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;
|
||||
|
||||
},
|
||||
});
|
||||
|
||||
|
||||
}).call(this);
|
||||
|
@ -108,7 +108,11 @@
|
||||
var objClone = {};
|
||||
each(obj, function(value, key) {
|
||||
if (obj.hasOwnProperty(key)) {
|
||||
objClone[key] = value;
|
||||
if (typeof value === 'object' && value !== null) {
|
||||
objClone[key] = clone(value);
|
||||
} else {
|
||||
objClone[key] = value;
|
||||
}
|
||||
}
|
||||
});
|
||||
return objClone;
|
||||
|
@ -9,7 +9,7 @@
|
||||
isHorizontal: function() {
|
||||
return this.options.position == "top" || this.options.position == "bottom";
|
||||
},
|
||||
getPixelForValue: function(value, index, includeOffset) {
|
||||
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
|
||||
// This must be called after fit has been run so that
|
||||
// this.left, this.top, this.right, and this.bottom have been defined
|
||||
if (this.isHorizontal()) {
|
||||
@ -27,11 +27,13 @@
|
||||
return this.top + (index * (this.height / this.data.labels.length));
|
||||
}
|
||||
},
|
||||
|
||||
getPointPixelForValue: function(value, index, datasetIndex) {
|
||||
return this.getPixelForValue(value, index, datasetIndex, true);
|
||||
},
|
||||
|
||||
// Functions needed for bar charts
|
||||
calculateBaseWidth: function() {
|
||||
return (this.getPixelForValue(null, 1, true) - this.getPixelForValue(null, 0, true)) - (2 * this.options.categorySpacing);
|
||||
return (this.getPixelForValue(null, 1, 0, true) - this.getPixelForValue(null, 0, 0, true)) - (2 * this.options.categorySpacing);
|
||||
},
|
||||
calculateBarWidth: function(datasetCount) {
|
||||
//The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
|
||||
@ -44,7 +46,7 @@
|
||||
},
|
||||
calculateBarX: function(datasetCount, datasetIndex, elementIndex) {
|
||||
var xWidth = this.calculateBaseWidth(),
|
||||
xAbsolute = this.getPixelForValue(null, elementIndex, true) - (xWidth / 2),
|
||||
xAbsolute = this.getPixelForValue(null, elementIndex, datasetIndex, true) - (xWidth / 2),
|
||||
barWidth = this.calculateBarWidth(datasetCount);
|
||||
|
||||
if (this.options.stacked) {
|
||||
@ -174,8 +176,8 @@
|
||||
var isRotated = this.labelRotation !== 0;
|
||||
|
||||
helpers.each(this.data.labels, function(label, index) {
|
||||
var xLineValue = this.getPixelForValue(label, index, false); // xvalues for grid lines
|
||||
var xLabelValue = this.getPixelForValue(label, index, true); // x values for labels (need to consider offsetLabel option)
|
||||
var xLineValue = this.getPixelForValue(label, index, null, false); // xvalues for grid lines
|
||||
var xLabelValue = this.getPixelForValue(label, index, null, true); // x values for labels (need to consider offsetLabel option)
|
||||
|
||||
if (this.options.gridLines.show) {
|
||||
if (index === 0) {
|
||||
|
Loading…
Reference in New Issue
Block a user