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File: vendors/gentelella/vendors/Chart.js/src/controllers/controller.line.js

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File: vendors/gentelella/vendors/Chart.js/src/controllers/controller.line.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Gentelella BladeOne
Render templates using Bootstrap for presentation
Author: By
Last change:
Date: 3 years ago
Size: 10,428 bytes
 

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"use strict"; module.exports = function(Chart) { var helpers = Chart.helpers; Chart.defaults.line = { showLines: true, hover: { mode: "label" }, scales: { xAxes: [{ type: "category", id: 'x-axis-0' }], yAxes: [{ type: "linear", id: 'y-axis-0' }] } }; Chart.controllers.line = Chart.DatasetController.extend({ datasetElementType: Chart.elements.Line, dataElementType: Chart.elements.Point, addElementAndReset: function(index) { var me = this; var options = me.chart.options; Chart.DatasetController.prototype.addElementAndReset.call(me, index); // Make sure bezier control points are updated if (options.showLines && options.elements.line.tension !== 0) { me.updateBezierControlPoints(); } }, update: function update(reset) { var me = this; var meta = me.getMeta(); var line = meta.dataset; var points = meta.data || []; var options = me.chart.options; var lineElementOptions = options.elements.line; var scale = me.getScaleForId(meta.yAxisID); var i, ilen, dataset, custom; // Update Line if (options.showLines) { dataset = me.getDataset(); custom = line.custom || {}; // Compatibility: If the properties are defined with only the old name, use those values if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) { dataset.lineTension = dataset.tension; } // Utility line._scale = scale; line._datasetIndex = me.index; // Data line._children = points; // Model line._model = { // Appearance tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension), backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor), borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth), borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor), borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle), borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash), borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset), borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle), fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill), // Scale scaleTop: scale.top, scaleBottom: scale.bottom, scaleZero: scale.getBasePixel() }; line.pivot(); } // Update Points for (i=0, ilen=points.length; i<ilen; ++i) { me.updateElement(points[i], i, reset); } if (options.showLines && lineElementOptions.tension !== 0) { me.updateBezierControlPoints(); } }, getPointBackgroundColor: function(point, index) { var backgroundColor = this.chart.options.elements.point.backgroundColor; var dataset = this.getDataset(); var custom = point.custom || {}; if (custom.backgroundColor) { backgroundColor = custom.backgroundColor; } else if (dataset.pointBackgroundColor) { backgroundColor = helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor); } else if (dataset.backgroundColor) { backgroundColor = dataset.backgroundColor; } return backgroundColor; }, getPointBorderColor: function(point, index) { var borderColor = this.chart.options.elements.point.borderColor; var dataset = this.getDataset(); var custom = point.custom || {}; if (custom.borderColor) { borderColor = custom.borderColor; } else if (dataset.pointBorderColor) { borderColor = helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor); } else if (dataset.borderColor) { borderColor = dataset.borderColor; } return borderColor; }, getPointBorderWidth: function(point, index) { var borderWidth = this.chart.options.elements.point.borderWidth; var dataset = this.getDataset(); var custom = point.custom || {}; if (custom.borderWidth) { borderWidth = custom.borderWidth; } else if (dataset.pointBorderWidth) { borderWidth = helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth); } else if (dataset.borderWidth) { borderWidth = dataset.borderWidth; } return borderWidth; }, updateElement: function(point, index, reset) { var me = this; var meta = me.getMeta(); var custom = point.custom || {}; var dataset = me.getDataset(); var datasetIndex = me.index; var value = dataset.data[index]; var yScale = me.getScaleForId(meta.yAxisID); var xScale = me.getScaleForId(meta.xAxisID); var pointOptions = me.chart.options.elements.point; var x, y; // Compatibility: If the properties are defined with only the old name, use those values if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) { dataset.pointRadius = dataset.radius; } if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) { dataset.pointHitRadius = dataset.hitRadius; } x = xScale.getPixelForValue(value, index, datasetIndex, me.chart.isCombo); y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex, me.chart.isCombo); // Utility point._xScale = xScale; point._yScale = yScale; point._datasetIndex = datasetIndex; point._index = index; // Desired view properties point._model = { x: x, y: y, skip: custom.skip || isNaN(x) || isNaN(y), // Appearance radius: custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius), pointStyle: custom.pointStyle || helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle), backgroundColor: me.getPointBackgroundColor(point, index), borderColor: me.getPointBorderColor(point, index), borderWidth: me.getPointBorderWidth(point, index), tension: meta.dataset._model ? meta.dataset._model.tension : 0, // Tooltip hitRadius: custom.hitRadius || helpers.getValueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius) }; }, calculatePointY: function(value, index, datasetIndex, isCombo) { var me = this; var chart = me.chart; var meta = me.getMeta(); var yScale = me.getScaleForId(meta.yAxisID); var sumPos = 0; var sumNeg = 0; var i, ds, dsMeta; if (yScale.options.stacked) { for (i = 0; i < datasetIndex; i++) { ds = chart.data.datasets[i]; dsMeta = chart.getDatasetMeta(i); if (dsMeta.type === 'line' && chart.isDatasetVisible(i)) { if (ds.data[index] < 0) { sumNeg += ds.data[index] || 0; } else { sumPos += ds.data[index] || 0; } } } if (value < 0) { return yScale.getPixelForValue(sumNeg + value); } else { return yScale.getPixelForValue(sumPos + value); } } return yScale.getPixelForValue(value); }, updateBezierControlPoints: function() { var meta = this.getMeta(); var area = this.chart.chartArea; var points = meta.data || []; var i, ilen, point, model, controlPoints; for (i=0, ilen=points.length; i<ilen; ++i) { point = points[i]; model = point._model; controlPoints = helpers.splineCurve( helpers.previousItem(points, i)._model, model, helpers.nextItem(points, i)._model, meta.dataset._model.tension ); // Prevent the bezier going outside of the bounds of the graph model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, area.right), area.left); model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, area.bottom), area.top); model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, area.right), area.left); model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, area.bottom), area.top); // Now pivot the point for animation point.pivot(); } }, draw: function(ease) { var meta = this.getMeta(); var points = meta.data || []; var easingDecimal = ease || 1; var i, ilen; // Transition Point Locations for (i=0, ilen=points.length; i<ilen; ++i) { points[i].transition(easingDecimal); } // Transition and Draw the line if (this.chart.options.showLines) { meta.dataset.transition(easingDecimal).draw(); } // Draw the points for (i=0, ilen=points.length; i<ilen; ++i) { points[i].draw(); } }, setHoverStyle: function(point) { // Point var dataset = this.chart.data.datasets[point._datasetIndex]; var index = point._index; var custom = point.custom || {}; var model = point._model; model.radius = custom.hoverRadius || helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius); model.backgroundColor = custom.hoverBackgroundColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor)); model.borderColor = custom.hoverBorderColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor)); model.borderWidth = custom.hoverBorderWidth || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth); }, removeHoverStyle: function(point) { var me = this; var dataset = me.chart.data.datasets[point._datasetIndex]; var index = point._index; var custom = point.custom || {}; var model = point._model; // Compatibility: If the properties are defined with only the old name, use those values if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) { dataset.pointRadius = dataset.radius; } model.radius = custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, me.chart.options.elements.point.radius); model.backgroundColor = me.getPointBackgroundColor(point, index); model.borderColor = me.getPointBorderColor(point, index); model.borderWidth = me.getPointBorderWidth(point, index); } }); };