From: Evert Timberg Date: Sat, 13 Jun 2015 02:07:07 +0000 (-0400) Subject: Convert line chart to tabs from spaces X-Git-Tag: 2.0.0-alpha2~5^2~4 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d37e65c58cf4253e33d732c56f8862458de84597;p=thirdparty%2FChart.js.git Convert line chart to tabs from spaces --- diff --git a/src/charts/chart.line.js b/src/charts/chart.line.js index c5aeadd7e..651820e6b 100644 --- a/src/charts/chart.line.js +++ b/src/charts/chart.line.js @@ -1,547 +1,547 @@ (function() { - "use strict"; - - var root = this, - Chart = root.Chart, - helpers = Chart.helpers; - - var defaultConfig = { - hover: { - mode: "label" - }, - - scales: { - xAxes: [{ - type: "category", // scatter should not use a dataset axis - display: true, - position: "bottom", - id: "x-axis-1", // need an ID so datasets can reference the scale - - // grid line settings - gridLines: { - show: true, - color: "rgba(0, 0, 0, 0.05)", - lineWidth: 1, - drawOnChartArea: true, - drawTicks: true, - zeroLineWidth: 1, - zeroLineColor: "rgba(0,0,0,0.25)", - offsetGridLines: false, - }, - - // label settings - labels: { - show: true, - template: "<%=value%>", - fontSize: 12, - fontStyle: "normal", - fontColor: "#666", - fontFamily: "Helvetica Neue", - }, - }], - yAxes: [{ - type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance - display: true, - position: "left", - id: "y-axis-1", - - // grid line settings - gridLines: { - show: true, - color: "rgba(0, 0, 0, 0.05)", - lineWidth: 1, - drawOnChartArea: true, - drawTicks: true, // draw ticks extending towards the label - zeroLineWidth: 1, - zeroLineColor: "rgba(0,0,0,0.25)", - }, - - // scale numbers - beginAtZero: false, - override: null, - - // label settings - labels: { - show: true, - template: "<%=value.toLocaleString()%>", - fontSize: 12, - fontStyle: "normal", - fontColor: "#666", - fontFamily: "Helvetica Neue", - } - }], - }, - }; - - - Chart.Type.extend({ - name: "Line", - defaults: defaultConfig, - initialize: function() { - - var _this = this; - - // Events - helpers.bindEvents(this, this.options.events, this.events); - - // Create a new line and its points for each dataset and piece of data - helpers.each(this.data.datasets, function(dataset, datasetIndex) { - - dataset.metaDataset = new Chart.Line({ - _chart: this.chart, - _datasetIndex: datasetIndex, - _points: dataset.metaData, - }); - - dataset.metaData = []; - - helpers.each(dataset.data, function(dataPoint, index) { - dataset.metaData.push(new Chart.Point({ - _datasetIndex: datasetIndex, - _index: index, - _chart: this.chart, - _model: { - x: 0, //xScale.getPixelForValue(null, index, true), - y: 0, //this.chartArea.bottom, - }, - })); - - }, this); - - // The line chart onlty supports a single x axis because the x axis is always a dataset axis - dataset.xAxisID = this.options.scales.xAxes[0].id; - - if (!dataset.yAxisID) { - dataset.yAxisID = this.options.scales.yAxes[0].id; - } - - }, this); - - // Build and fit the scale. Needs to happen after the axis IDs have been set - this.buildScale(); - - // Create tooltip instance exclusively for this chart with some defaults. - this.tooltip = new Chart.Tooltip({ - _chart: this.chart, - _data: this.data, - _options: this.options, - }, this); - - // Need to fit scales before we reset elements. - Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height); - - // Reset so that we animation from the baseline - this.resetElements(); - - // Update that shiz - this.update(); - }, - nextPoint: function(collection, index) { - return collection[index + 1] || collection[index]; - }, - previousPoint: function(collection, index) { - return collection[index - 1] || collection[index]; - }, - resetElements: function() { - // Update the points - this.eachElement(function(point, index, dataset, datasetIndex) { - var xScale = this.scales[this.data.datasets[datasetIndex].xAxisID]; - var yScale = this.scales[this.data.datasets[datasetIndex].yAxisID]; - - var yScalePoint; - - if (yScale.min < 0 && yScale.max < 0) { - // all less than 0. use the top - yScalePoint = yScale.getPixelForValue(yScale.max); - } else if (yScale.min > 0 && yScale.max > 0) { - yScalePoint = yScale.getPixelForValue(yScale.min); - } else { - yScalePoint = yScale.getPixelForValue(0); - } - - helpers.extend(point, { - // Utility - _chart: this.chart, - _xScale: xScale, - _yScale: yScale, - _datasetIndex: datasetIndex, - _index: index, - - // Desired view properties - _model: { - x: xScale.getPixelForValue(null, index, true), // value not used in dataset scale, but we want a consistent API between scales - y: yScalePoint, - - // Appearance - tension: point.custom && point.custom.tension ? point.custom.tension : this.options.elements.line.tension, - radius: point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].radius, index, this.options.elements.point.radius), - backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBackgroundColor, index, this.options.elements.point.backgroundColor), - borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderColor, index, this.options.elements.point.borderColor), - borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderWidth, index, this.options.elements.point.borderWidth), - skip: this.data.datasets[datasetIndex].data[index] === null, - - // Tooltip - hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].hitRadius, index, this.options.elements.point.hitRadius), - }, - }); - }, this); - - // Update control points for the bezier curve - this.eachElement(function(point, index, dataset, datasetIndex) { - var controlPoints = helpers.splineCurve( - this.previousPoint(dataset, index)._model, - point._model, - this.nextPoint(dataset, index)._model, - point._model.tension - ); - - point._model.controlPointPreviousX = controlPoints.previous.x; - point._model.controlPointNextX = controlPoints.next.x; - - // Prevent the bezier going outside of the bounds of the graph - - // Cap puter bezier handles to the upper/lower scale bounds - if (controlPoints.next.y > this.chartArea.bottom) { - point._model.controlPointNextY = this.chartArea.bottom; - } else if (controlPoints.next.y < this.chartArea.top) { - point._model.controlPointNextY = this.chartArea.top; - } else { - point._model.controlPointNextY = controlPoints.next.y; - } - - // Cap inner bezier handles to the upper/lower scale bounds - if (controlPoints.previous.y > this.chartArea.bottom) { - point._model.controlPointPreviousY = this.chartArea.bottom; - } else if (controlPoints.previous.y < this.chartArea.top) { - point._model.controlPointPreviousY = this.chartArea.top; - } else { - point._model.controlPointPreviousY = controlPoints.previous.y; - } - - // Now pivot the point for animation - point.pivot(); - }, this); - }, - update: function(animationDuration) { - - Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height); - - // Update the lines - this.eachDataset(function(dataset, datasetIndex) { - var yScale = this.scales[dataset.yAxisID]; - 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(dataset.metaDataset, { - // Utility - _scale: yScale, - _datasetIndex: datasetIndex, - // Data - _children: dataset.metaData, - // Model - _model: { - // Appearance - tension: dataset.metaDataset.custom && dataset.metaDataset.custom.tension ? dataset.metaDataset.custom.tension : (dataset.tension || this.options.elements.line.tension), - backgroundColor: dataset.metaDataset.custom && dataset.metaDataset.custom.backgroundColor ? dataset.metaDataset.custom.backgroundColor : (dataset.backgroundColor || this.options.elements.line.backgroundColor), - borderWidth: dataset.metaDataset.custom && dataset.metaDataset.custom.borderWidth ? dataset.metaDataset.custom.borderWidth : (dataset.borderWidth || this.options.elements.line.borderWidth), - borderColor: dataset.metaDataset.custom && dataset.metaDataset.custom.borderColor ? dataset.metaDataset.custom.borderColor : (dataset.borderColor || this.options.elements.line.borderColor), - fill: dataset.metaDataset.custom && dataset.metaDataset.custom.fill ? dataset.metaDataset.custom.fill : (dataset.fill !== undefined ? dataset.fill : this.options.elements.line.fill), - skipNull: dataset.skipNull !== undefined ? dataset.skipNull : this.options.elements.line.skipNull, - drawNull: dataset.drawNull !== undefined ? dataset.drawNull : this.options.elements.line.drawNull, - // Scale - scaleTop: yScale.top, - scaleBottom: yScale.bottom, - scaleZero: scaleBase, - }, - }); - - dataset.metaDataset.pivot(); - }); - - // Update the points - this.eachElement(function(point, index, dataset, datasetIndex) { - var xScale = this.scales[this.data.datasets[datasetIndex].xAxisID]; - var yScale = this.scales[this.data.datasets[datasetIndex].yAxisID]; - - helpers.extend(point, { - // Utility - _chart: this.chart, - _xScale: xScale, - _yScale: yScale, - _datasetIndex: datasetIndex, - _index: index, - - // Desired view properties - _model: { - x: xScale.getPixelForValue(null, index, true), // value not used in dataset scale, but we want a consistent API between scales - y: yScale.getPointPixelForValue(this.data.datasets[datasetIndex].data[index], index, datasetIndex), - - // Appearance - tension: point.custom && point.custom.tension ? point.custom.tension : this.options.elements.line.tension, - radius: point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].radius, index, this.options.elements.point.radius), - backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBackgroundColor, index, this.options.elements.point.backgroundColor), - borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderColor, index, this.options.elements.point.borderColor), - borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderWidth, index, this.options.elements.point.borderWidth), - skip: this.data.datasets[datasetIndex].data[index] === null, - - // Tooltip - hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].hitRadius, index, this.options.elements.point.hitRadius), - }, - }); - }, this); - - - // Update control points for the bezier curve - this.eachElement(function(point, index, dataset, datasetIndex) { - var controlPoints = helpers.splineCurve( - this.previousPoint(dataset, index)._model, - point._model, - this.nextPoint(dataset, index)._model, - point._model.tension - ); - - point._model.controlPointPreviousX = controlPoints.previous.x; - point._model.controlPointNextX = controlPoints.next.x; - - // Prevent the bezier going outside of the bounds of the graph - - // Cap puter bezier handles to the upper/lower scale bounds - if (controlPoints.next.y > this.chartArea.bottom) { - point._model.controlPointNextY = this.chartArea.bottom; - } else if (controlPoints.next.y < this.chartArea.top) { - point._model.controlPointNextY = this.chartArea.top; - } else { - point._model.controlPointNextY = controlPoints.next.y; - } - - // Cap inner bezier handles to the upper/lower scale bounds - if (controlPoints.previous.y > this.chartArea.bottom) { - point._model.controlPointPreviousY = this.chartArea.bottom; - } else if (controlPoints.previous.y < this.chartArea.top) { - point._model.controlPointPreviousY = this.chartArea.top; - } else { - point._model.controlPointPreviousY = controlPoints.previous.y; - } - - // Now pivot the point for animation - point.pivot(); - }, this); - - this.render(animationDuration); - }, - buildScale: function() { - var self = this; - - // Map of scale ID to scale object so we can lookup later - this.scales = {}; - - // Build the x axis. The line chart only supports a single x axis - var ScaleClass = Chart.scales.getScaleConstructor(this.options.scales.xAxes[0].type); - var xScale = new ScaleClass({ - ctx: this.chart.ctx, - options: this.options.scales.xAxes[0], - data: this.data, - id: this.options.scales.xAxes[0].id, - }); - this.scales[xScale.id] = xScale; - - // Build up all the y scales - helpers.each(this.options.scales.yAxes, function(yAxisOptions) { - var ScaleClass = Chart.scales.getScaleConstructor(yAxisOptions.type); - var scale = new ScaleClass({ - ctx: this.chart.ctx, - options: yAxisOptions, - data: this.data, - id: yAxisOptions.id, - }); - - this.scales[scale.id] = scale; - }, this); - }, - draw: function(ease) { - - var easingDecimal = ease || 1; - this.clear(); - - // Draw all the scales - helpers.each(this.scales, function(scale) { - scale.draw(this.chartArea); - }, this); - - // reverse for-loop for proper stacking - for (var i = this.data.datasets.length - 1; i >= 0; i--) { - - var dataset = this.data.datasets[i]; - - // Transition Point Locations - helpers.each(dataset.metaData, function(point, index) { - point.transition(easingDecimal); - }, this); - - // Transition and Draw the line - dataset.metaDataset.transition(easingDecimal).draw(); - - // Draw the points - helpers.each(dataset.metaData, function(point) { - point.draw(); - }); - } - - // Finally draw the tooltip - this.tooltip.transition(easingDecimal).draw(); - }, - events: function(e) { - - this.lastActive = this.lastActive || []; - - // Find Active Elements - if (e.type == 'mouseout') { - this.active = []; - } else { - this.active = function() { - switch (this.options.hover.mode) { - case 'single': - return this.getElementAtEvent(e); - case 'label': - return this.getElementsAtEvent(e); - case 'dataset': - return this.getDatasetAtEvent(e); - default: - return e; - } - }.call(this); - } - - // On Hover hook - if (this.options.hover.onHover) { - this.options.hover.onHover.call(this, this.active); - } - - if (e.type == 'mouseup' || e.type == 'click') { - if (this.options.onClick) { - this.options.onClick.call(this, e, this.active); - } - } - - var dataset; - var index; - // Remove styling for last active (even if it may still be active) - if (this.lastActive.length) { - switch (this.options.hover.mode) { - case 'single': - dataset = this.data.datasets[this.lastActive[0]._datasetIndex]; - 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; - }, - }); + "use strict"; + + var root = this, + Chart = root.Chart, + helpers = Chart.helpers; + + var defaultConfig = { + hover: { + mode: "label" + }, + + scales: { + xAxes: [{ + type: "category", // scatter should not use a dataset axis + display: true, + position: "bottom", + id: "x-axis-1", // need an ID so datasets can reference the scale + + // grid line settings + gridLines: { + show: true, + color: "rgba(0, 0, 0, 0.05)", + lineWidth: 1, + drawOnChartArea: true, + drawTicks: true, + zeroLineWidth: 1, + zeroLineColor: "rgba(0,0,0,0.25)", + offsetGridLines: false, + }, + + // label settings + labels: { + show: true, + template: "<%=value%>", + fontSize: 12, + fontStyle: "normal", + fontColor: "#666", + fontFamily: "Helvetica Neue", + }, + }], + yAxes: [{ + type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance + display: true, + position: "left", + id: "y-axis-1", + + // grid line settings + gridLines: { + show: true, + color: "rgba(0, 0, 0, 0.05)", + lineWidth: 1, + drawOnChartArea: true, + drawTicks: true, // draw ticks extending towards the label + zeroLineWidth: 1, + zeroLineColor: "rgba(0,0,0,0.25)", + }, + + // scale numbers + beginAtZero: false, + override: null, + + // label settings + labels: { + show: true, + template: "<%=value.toLocaleString()%>", + fontSize: 12, + fontStyle: "normal", + fontColor: "#666", + fontFamily: "Helvetica Neue", + } + }], + }, + }; + + + Chart.Type.extend({ + name: "Line", + defaults: defaultConfig, + initialize: function() { + + var _this = this; + + // Events + helpers.bindEvents(this, this.options.events, this.events); + + // Create a new line and its points for each dataset and piece of data + helpers.each(this.data.datasets, function(dataset, datasetIndex) { + + dataset.metaDataset = new Chart.Line({ + _chart: this.chart, + _datasetIndex: datasetIndex, + _points: dataset.metaData, + }); + + dataset.metaData = []; + + helpers.each(dataset.data, function(dataPoint, index) { + dataset.metaData.push(new Chart.Point({ + _datasetIndex: datasetIndex, + _index: index, + _chart: this.chart, + _model: { + x: 0, //xScale.getPixelForValue(null, index, true), + y: 0, //this.chartArea.bottom, + }, + })); + + }, this); + + // The line chart onlty supports a single x axis because the x axis is always a dataset axis + dataset.xAxisID = this.options.scales.xAxes[0].id; + + if (!dataset.yAxisID) { + dataset.yAxisID = this.options.scales.yAxes[0].id; + } + + }, this); + + // Build and fit the scale. Needs to happen after the axis IDs have been set + this.buildScale(); + + // Create tooltip instance exclusively for this chart with some defaults. + this.tooltip = new Chart.Tooltip({ + _chart: this.chart, + _data: this.data, + _options: this.options, + }, this); + + // Need to fit scales before we reset elements. + Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height); + + // Reset so that we animation from the baseline + this.resetElements(); + + // Update that shiz + this.update(); + }, + nextPoint: function(collection, index) { + return collection[index + 1] || collection[index]; + }, + previousPoint: function(collection, index) { + return collection[index - 1] || collection[index]; + }, + resetElements: function() { + // Update the points + this.eachElement(function(point, index, dataset, datasetIndex) { + var xScale = this.scales[this.data.datasets[datasetIndex].xAxisID]; + var yScale = this.scales[this.data.datasets[datasetIndex].yAxisID]; + + var yScalePoint; + + if (yScale.min < 0 && yScale.max < 0) { + // all less than 0. use the top + yScalePoint = yScale.getPixelForValue(yScale.max); + } else if (yScale.min > 0 && yScale.max > 0) { + yScalePoint = yScale.getPixelForValue(yScale.min); + } else { + yScalePoint = yScale.getPixelForValue(0); + } + + helpers.extend(point, { + // Utility + _chart: this.chart, + _xScale: xScale, + _yScale: yScale, + _datasetIndex: datasetIndex, + _index: index, + + // Desired view properties + _model: { + x: xScale.getPixelForValue(null, index, true), // value not used in dataset scale, but we want a consistent API between scales + y: yScalePoint, + + // Appearance + tension: point.custom && point.custom.tension ? point.custom.tension : this.options.elements.line.tension, + radius: point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].radius, index, this.options.elements.point.radius), + backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBackgroundColor, index, this.options.elements.point.backgroundColor), + borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderColor, index, this.options.elements.point.borderColor), + borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderWidth, index, this.options.elements.point.borderWidth), + skip: this.data.datasets[datasetIndex].data[index] === null, + + // Tooltip + hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].hitRadius, index, this.options.elements.point.hitRadius), + }, + }); + }, this); + + // Update control points for the bezier curve + this.eachElement(function(point, index, dataset, datasetIndex) { + var controlPoints = helpers.splineCurve( + this.previousPoint(dataset, index)._model, + point._model, + this.nextPoint(dataset, index)._model, + point._model.tension + ); + + point._model.controlPointPreviousX = controlPoints.previous.x; + point._model.controlPointNextX = controlPoints.next.x; + + // Prevent the bezier going outside of the bounds of the graph + + // Cap puter bezier handles to the upper/lower scale bounds + if (controlPoints.next.y > this.chartArea.bottom) { + point._model.controlPointNextY = this.chartArea.bottom; + } else if (controlPoints.next.y < this.chartArea.top) { + point._model.controlPointNextY = this.chartArea.top; + } else { + point._model.controlPointNextY = controlPoints.next.y; + } + + // Cap inner bezier handles to the upper/lower scale bounds + if (controlPoints.previous.y > this.chartArea.bottom) { + point._model.controlPointPreviousY = this.chartArea.bottom; + } else if (controlPoints.previous.y < this.chartArea.top) { + point._model.controlPointPreviousY = this.chartArea.top; + } else { + point._model.controlPointPreviousY = controlPoints.previous.y; + } + + // Now pivot the point for animation + point.pivot(); + }, this); + }, + update: function(animationDuration) { + + Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height); + + // Update the lines + this.eachDataset(function(dataset, datasetIndex) { + var yScale = this.scales[dataset.yAxisID]; + 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(dataset.metaDataset, { + // Utility + _scale: yScale, + _datasetIndex: datasetIndex, + // Data + _children: dataset.metaData, + // Model + _model: { + // Appearance + tension: dataset.metaDataset.custom && dataset.metaDataset.custom.tension ? dataset.metaDataset.custom.tension : (dataset.tension || this.options.elements.line.tension), + backgroundColor: dataset.metaDataset.custom && dataset.metaDataset.custom.backgroundColor ? dataset.metaDataset.custom.backgroundColor : (dataset.backgroundColor || this.options.elements.line.backgroundColor), + borderWidth: dataset.metaDataset.custom && dataset.metaDataset.custom.borderWidth ? dataset.metaDataset.custom.borderWidth : (dataset.borderWidth || this.options.elements.line.borderWidth), + borderColor: dataset.metaDataset.custom && dataset.metaDataset.custom.borderColor ? dataset.metaDataset.custom.borderColor : (dataset.borderColor || this.options.elements.line.borderColor), + fill: dataset.metaDataset.custom && dataset.metaDataset.custom.fill ? dataset.metaDataset.custom.fill : (dataset.fill !== undefined ? dataset.fill : this.options.elements.line.fill), + skipNull: dataset.skipNull !== undefined ? dataset.skipNull : this.options.elements.line.skipNull, + drawNull: dataset.drawNull !== undefined ? dataset.drawNull : this.options.elements.line.drawNull, + // Scale + scaleTop: yScale.top, + scaleBottom: yScale.bottom, + scaleZero: scaleBase, + }, + }); + + dataset.metaDataset.pivot(); + }); + + // Update the points + this.eachElement(function(point, index, dataset, datasetIndex) { + var xScale = this.scales[this.data.datasets[datasetIndex].xAxisID]; + var yScale = this.scales[this.data.datasets[datasetIndex].yAxisID]; + + helpers.extend(point, { + // Utility + _chart: this.chart, + _xScale: xScale, + _yScale: yScale, + _datasetIndex: datasetIndex, + _index: index, + + // Desired view properties + _model: { + x: xScale.getPixelForValue(null, index, true), // value not used in dataset scale, but we want a consistent API between scales + y: yScale.getPointPixelForValue(this.data.datasets[datasetIndex].data[index], index, datasetIndex), + + // Appearance + tension: point.custom && point.custom.tension ? point.custom.tension : this.options.elements.line.tension, + radius: point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].radius, index, this.options.elements.point.radius), + backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBackgroundColor, index, this.options.elements.point.backgroundColor), + borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderColor, index, this.options.elements.point.borderColor), + borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].pointBorderWidth, index, this.options.elements.point.borderWidth), + skip: this.data.datasets[datasetIndex].data[index] === null, + + // Tooltip + hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.data.datasets[datasetIndex].hitRadius, index, this.options.elements.point.hitRadius), + }, + }); + }, this); + + + // Update control points for the bezier curve + this.eachElement(function(point, index, dataset, datasetIndex) { + var controlPoints = helpers.splineCurve( + this.previousPoint(dataset, index)._model, + point._model, + this.nextPoint(dataset, index)._model, + point._model.tension + ); + + point._model.controlPointPreviousX = controlPoints.previous.x; + point._model.controlPointNextX = controlPoints.next.x; + + // Prevent the bezier going outside of the bounds of the graph + + // Cap puter bezier handles to the upper/lower scale bounds + if (controlPoints.next.y > this.chartArea.bottom) { + point._model.controlPointNextY = this.chartArea.bottom; + } else if (controlPoints.next.y < this.chartArea.top) { + point._model.controlPointNextY = this.chartArea.top; + } else { + point._model.controlPointNextY = controlPoints.next.y; + } + + // Cap inner bezier handles to the upper/lower scale bounds + if (controlPoints.previous.y > this.chartArea.bottom) { + point._model.controlPointPreviousY = this.chartArea.bottom; + } else if (controlPoints.previous.y < this.chartArea.top) { + point._model.controlPointPreviousY = this.chartArea.top; + } else { + point._model.controlPointPreviousY = controlPoints.previous.y; + } + + // Now pivot the point for animation + point.pivot(); + }, this); + + this.render(animationDuration); + }, + buildScale: function() { + var self = this; + + // Map of scale ID to scale object so we can lookup later + this.scales = {}; + + // Build the x axis. The line chart only supports a single x axis + var ScaleClass = Chart.scales.getScaleConstructor(this.options.scales.xAxes[0].type); + var xScale = new ScaleClass({ + ctx: this.chart.ctx, + options: this.options.scales.xAxes[0], + data: this.data, + id: this.options.scales.xAxes[0].id, + }); + this.scales[xScale.id] = xScale; + + // Build up all the y scales + helpers.each(this.options.scales.yAxes, function(yAxisOptions) { + var ScaleClass = Chart.scales.getScaleConstructor(yAxisOptions.type); + var scale = new ScaleClass({ + ctx: this.chart.ctx, + options: yAxisOptions, + data: this.data, + id: yAxisOptions.id, + }); + + this.scales[scale.id] = scale; + }, this); + }, + draw: function(ease) { + + var easingDecimal = ease || 1; + this.clear(); + + // Draw all the scales + helpers.each(this.scales, function(scale) { + scale.draw(this.chartArea); + }, this); + + // reverse for-loop for proper stacking + for (var i = this.data.datasets.length - 1; i >= 0; i--) { + + var dataset = this.data.datasets[i]; + + // Transition Point Locations + helpers.each(dataset.metaData, function(point, index) { + point.transition(easingDecimal); + }, this); + + // Transition and Draw the line + dataset.metaDataset.transition(easingDecimal).draw(); + + // Draw the points + helpers.each(dataset.metaData, function(point) { + point.draw(); + }); + } + + // Finally draw the tooltip + this.tooltip.transition(easingDecimal).draw(); + }, + events: function(e) { + + this.lastActive = this.lastActive || []; + + // Find Active Elements + if (e.type == 'mouseout') { + this.active = []; + } else { + this.active = function() { + switch (this.options.hover.mode) { + case 'single': + return this.getElementAtEvent(e); + case 'label': + return this.getElementsAtEvent(e); + case 'dataset': + return this.getDatasetAtEvent(e); + default: + return e; + } + }.call(this); + } + + // On Hover hook + if (this.options.hover.onHover) { + this.options.hover.onHover.call(this, this.active); + } + + if (e.type == 'mouseup' || e.type == 'click') { + if (this.options.onClick) { + this.options.onClick.call(this, e, this.active); + } + } + + var dataset; + var index; + // Remove styling for last active (even if it may still be active) + if (this.lastActive.length) { + switch (this.options.hover.mode) { + case 'single': + dataset = this.data.datasets[this.lastActive[0]._datasetIndex]; + 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);