mirror of
https://github.com/chartjs/Chart.js.git
synced 2024-10-07 12:49:07 +02:00
168 lines
6.7 KiB
JavaScript
168 lines
6.7 KiB
JavaScript
"use strict";
|
|
|
|
module.exports = function(Chart) {
|
|
|
|
var helpers = Chart.helpers;
|
|
|
|
Chart.defaults.bubble = {
|
|
hover: {
|
|
mode: "single"
|
|
},
|
|
|
|
scales: {
|
|
xAxes: [{
|
|
type: "linear", // bubble should probably use a linear scale by default
|
|
position: "bottom",
|
|
id: "x-axis-0" // need an ID so datasets can reference the scale
|
|
}],
|
|
yAxes: [{
|
|
type: "linear",
|
|
position: "left",
|
|
id: "y-axis-0"
|
|
}]
|
|
},
|
|
|
|
tooltips: {
|
|
callbacks: {
|
|
title: function(tooltipItems, data) {
|
|
// Title doesn't make sense for scatter since we format the data as a point
|
|
return '';
|
|
},
|
|
label: function(tooltipItem, data) {
|
|
var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
|
|
var dataPoint = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
|
|
return datasetLabel + ': (' + dataPoint.x + ', ' + dataPoint.y + ', ' + dataPoint.r + ')';
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
Chart.controllers.bubble = Chart.DatasetController.extend({
|
|
addElements: function() {
|
|
|
|
this.getDataset().metaData = this.getDataset().metaData || [];
|
|
|
|
helpers.each(this.getDataset().data, function(value, index) {
|
|
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Point({
|
|
_chart: this.chart.chart,
|
|
_datasetIndex: this.index,
|
|
_index: index
|
|
});
|
|
}, this);
|
|
},
|
|
addElementAndReset: function(index) {
|
|
this.getDataset().metaData = this.getDataset().metaData || [];
|
|
var point = new Chart.elements.Point({
|
|
_chart: this.chart.chart,
|
|
_datasetIndex: this.index,
|
|
_index: index
|
|
});
|
|
|
|
// Reset the point
|
|
this.updateElement(point, index, true);
|
|
|
|
// Add to the points array
|
|
this.getDataset().metaData.splice(index, 0, point);
|
|
},
|
|
|
|
update: function update(reset) {
|
|
var points = this.getDataset().metaData;
|
|
|
|
var yScale = this.getScaleForId(this.getDataset().yAxisID);
|
|
var xScale = this.getScaleForId(this.getDataset().xAxisID);
|
|
var scaleBase;
|
|
|
|
if (yScale.min < 0 && yScale.max < 0) {
|
|
scaleBase = yScale.getPixelForValue(yScale.max);
|
|
} else if (yScale.min > 0 && yScale.max > 0) {
|
|
scaleBase = yScale.getPixelForValue(yScale.min);
|
|
} else {
|
|
scaleBase = yScale.getPixelForValue(0);
|
|
}
|
|
|
|
// Update Points
|
|
helpers.each(points, function(point, index) {
|
|
this.updateElement(point, index, reset);
|
|
}, this);
|
|
|
|
},
|
|
|
|
updateElement: function(point, index, reset) {
|
|
var yScale = this.getScaleForId(this.getDataset().yAxisID);
|
|
var xScale = this.getScaleForId(this.getDataset().xAxisID);
|
|
var scaleBase;
|
|
|
|
if (yScale.min < 0 && yScale.max < 0) {
|
|
scaleBase = yScale.getPixelForValue(yScale.max);
|
|
} else if (yScale.min > 0 && yScale.max > 0) {
|
|
scaleBase = yScale.getPixelForValue(yScale.min);
|
|
} else {
|
|
scaleBase = yScale.getPixelForValue(0);
|
|
}
|
|
|
|
helpers.extend(point, {
|
|
// Utility
|
|
_chart: this.chart.chart,
|
|
_xScale: xScale,
|
|
_yScale: yScale,
|
|
_datasetIndex: this.index,
|
|
_index: index,
|
|
|
|
// Desired view properties
|
|
_model: {
|
|
x: reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(this.getDataset().data[index], index, this.index, this.chart.isCombo),
|
|
y: reset ? scaleBase : yScale.getPixelForValue(this.getDataset().data[index], index, this.index),
|
|
// Appearance
|
|
radius: reset ? 0 : point.custom && point.custom.radius ? point.custom.radius : this.getRadius(this.getDataset().data[index]),
|
|
backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.point.backgroundColor),
|
|
borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.point.borderColor),
|
|
borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.point.borderWidth),
|
|
|
|
// Tooltip
|
|
hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.getDataset().hitRadius, index, this.chart.options.elements.point.hitRadius)
|
|
}
|
|
});
|
|
|
|
point._model.skip = point.custom && point.custom.skip ? point.custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
|
|
|
|
point.pivot();
|
|
},
|
|
|
|
getRadius: function(value) {
|
|
return value.r || this.chart.options.elements.point.radius;
|
|
},
|
|
|
|
draw: function(ease) {
|
|
var easingDecimal = ease || 1;
|
|
|
|
// Transition and Draw the Points
|
|
helpers.each(this.getDataset().metaData, function(point, index) {
|
|
point.transition(easingDecimal);
|
|
point.draw();
|
|
});
|
|
|
|
},
|
|
|
|
setHoverStyle: function(point) {
|
|
// Point
|
|
var dataset = this.chart.data.datasets[point._datasetIndex];
|
|
var index = point._index;
|
|
|
|
point._model.radius = point.custom && point.custom.hoverRadius ? point.custom.hoverRadius : (helpers.getValueAtIndexOrDefault(dataset.hoverRadius, index, this.chart.options.elements.point.hoverRadius)) + this.getRadius(this.getDataset().data[point._index]);
|
|
point._model.backgroundColor = point.custom && point.custom.hoverBackgroundColor ? point.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.color(point._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
|
|
point._model.borderColor = point.custom && point.custom.hoverBorderColor ? point.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.color(point._model.borderColor).saturate(0.5).darken(0.1).rgbString());
|
|
point._model.borderWidth = point.custom && point.custom.hoverBorderWidth ? point.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, point._model.borderWidth);
|
|
},
|
|
|
|
removeHoverStyle: function(point) {
|
|
var dataset = this.chart.data.datasets[point._datasetIndex];
|
|
var index = point._index;
|
|
|
|
point._model.radius = point.custom && point.custom.radius ? point.custom.radius : this.getRadius(this.getDataset().data[point._index]);
|
|
point._model.backgroundColor = point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.point.backgroundColor);
|
|
point._model.borderColor = point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.point.borderColor);
|
|
point._model.borderWidth = point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.point.borderWidth);
|
|
}
|
|
});
|
|
}; |