mirror of
https://github.com/chartjs/Chart.js.git
synced 2024-10-07 04:39:06 +02:00
Scatter chart now extends the line chart.
This commit is contained in:
Evert Timberg
parent
6815fc451f
commit
8cfe21f6aa
@ -86,470 +86,8 @@
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};
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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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name: "Scatter",
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defaults: defaultConfig,
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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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// 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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_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,
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y: 0,
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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.getPointPixelForValue(this.data.datasets[datasetIndex].data[index], index, datasetIndex),
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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.radius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].radius, 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,
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// Tooltip
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hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].hitRadius, 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(animationDuration) {
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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.metaDataset.custom && dataset.metaDataset.custom.tension ? dataset.metaDataset.custom.tension : (dataset.tension || this.options.elements.line.tension),
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backgroundColor: dataset.metaDataset.custom && dataset.metaDataset.custom.backgroundColor ? dataset.metaDataset.custom.backgroundColor : (dataset.backgroundColor || this.options.elements.line.backgroundColor),
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borderWidth: dataset.metaDataset.custom && dataset.metaDataset.custom.borderWidth ? dataset.metaDataset.custom.borderWidth : (dataset.borderWidth || this.options.elements.line.borderWidth),
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borderColor: dataset.metaDataset.custom && dataset.metaDataset.custom.borderColor ? dataset.metaDataset.custom.borderColor : (dataset.borderColor || this.options.elements.line.borderColor),
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fill: dataset.metaDataset.custom && dataset.metaDataset.custom.fill ? dataset.metaDataset.custom.fill : (dataset.fill !== undefined ? dataset.fill : this.options.elements.line.fill),
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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.getPointPixelForValue(this.data.datasets[datasetIndex].data[index], index, datasetIndex),
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y: yScale.getPointPixelForValue(this.data.datasets[datasetIndex].data[index], index, datasetIndex),
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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.radius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].radius, 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,
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// Tooltip
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hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].hitRadius, 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(animationDuration);
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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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// Build the x axes
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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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// Build the y axes
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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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this.lastActive = this.lastActive || [];
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// Find Active Elements
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if (e.type == 'mouseout') {
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this.active = [];
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} else {
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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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}
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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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if (e.type == 'mouseup' || e.type == 'click') {
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if (this.options.onClick) {
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this.options.onClick.call(this, e, this.active);
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}
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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;
|
|
||||||
|
|
||||||
this.lastActive[0]._model.radius = this.lastActive[0].custom && this.lastActive[0].custom.radius ? this.lastActive[0].custom.radius : helpers.getValueAtIndexOrDefault(dataset.radius, index, this.options.elements.point.radius);
|
|
||||||
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);
|
|
||||||
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);
|
|
||||||
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);
|
|
||||||
break;
|
|
||||||
case 'label':
|
|
||||||
for (var i = 0; i < this.lastActive.length; i++) {
|
|
||||||
dataset = this.data.datasets[this.lastActive[i]._datasetIndex];
|
|
||||||
index = this.lastActive[i]._index;
|
|
||||||
|
|
||||||
this.lastActive[i]._model.radius = this.lastActive[i].custom && this.lastActive[i].custom.radius ? this.lastActive[i].custom.radius : helpers.getValueAtIndexOrDefault(dataset.radius, index, this.options.elements.point.radius);
|
|
||||||
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);
|
|
||||||
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);
|
|
||||||
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);
|
|
||||||
}
|
|
||||||
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];
|
|
||||||
index = this.active[0]._index;
|
|
||||||
|
|
||||||
this.active[0]._model.radius = this.active[0].custom && this.active[0].custom.radius ? this.active[0].custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.options.elements.point.hoverRadius);
|
|
||||||
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());
|
|
||||||
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());
|
|
||||||
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.radius ? this.active[i].custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.options.elements.point.hoverRadius);
|
|
||||||
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.hover.animationDuration);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Remember Last Active
|
|
||||||
this.lastActive = this.active;
|
|
||||||
return this;
|
|
||||||
|
|
||||||
},
|
|
||||||
});
|
});
|
||||||
|
|
||||||
|
|
||||||
}).call(this);
|
}).call(this);
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user