This change allows for smaller minified code in the final version, resulting in a smaller file size. Some files had previously used _this, but that has been changed to me to keep consistency throughout the project.
events | Array[String] | `["mousemove", "mouseout", "click", "touchstart", "touchmove", "touchend"]` | Events that the chart should listen to for tooltips and hovering
onClick | Function | null | Called if the event is of type 'mouseup' or 'click'. Called in the context of the chart and passed an array of active elements
legendCallback | Function | ` function (chart) { }` | Function to generate a legend. Receives the chart object to generate a legend from. Default implementation returns an HTML string.
+onResize | Function | null | Called when a resize occurs. Gets passed two arguemnts: the chart instance and the new size.
### Title Configuration
* End of update (before render occurs)
* Start of draw
* End of draw
+* Before datasets draw
+* After datasets draw
+* Resize
* Before an animation is started
Plugins should derive from Chart.PluginBase and implement the following interface
beforeInit: function(chartInstance) { },
afterInit: function(chartInstance) { },
+ resize: function(chartInstance, newChartSize) { },
+
beforeUpdate: function(chartInstance) { },
afterScaleUpdate: function(chartInstance) { }
afterUpdate: function(chartInstance) { },
// Get the number of datasets that display bars. We use this to correctly calculate the bar width
getBarCount: function getBarCount() {
+ var me = this;
var barCount = 0;
- helpers.each(this.chart.data.datasets, function(dataset, datasetIndex) {
- var meta = this.chart.getDatasetMeta(datasetIndex);
- if (meta.bar && this.chart.isDatasetVisible(datasetIndex)) {
+ helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
+ var meta = me.chart.getDatasetMeta(datasetIndex);
+ if (meta.bar && me.chart.isDatasetVisible(datasetIndex)) {
++barCount;
}
- }, this);
+ }, me);
return barCount;
},
update: function update(reset) {
- helpers.each(this.getMeta().data, function(rectangle, index) {
- this.updateElement(rectangle, index, reset);
- }, this);
+ var me = this;
+ helpers.each(me.getMeta().data, function(rectangle, index) {
+ me.updateElement(rectangle, index, reset);
+ }, me);
},
updateElement: function updateElement(rectangle, index, reset) {
- var meta = this.getMeta();
- var xScale = this.getScaleForId(meta.xAxisID);
- var yScale = this.getScaleForId(meta.yAxisID);
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var yScale = me.getScaleForId(meta.yAxisID);
var scaleBase = yScale.getBasePixel();
- var rectangleElementOptions = this.chart.options.elements.rectangle;
+ var rectangleElementOptions = me.chart.options.elements.rectangle;
var custom = rectangle.custom || {};
- var dataset = this.getDataset();
+ var dataset = me.getDataset();
helpers.extend(rectangle, {
// Utility
_xScale: xScale,
_yScale: yScale,
- _datasetIndex: this.index,
+ _datasetIndex: me.index,
_index: index,
// Desired view properties
_model: {
- x: this.calculateBarX(index, this.index),
- y: reset ? scaleBase : this.calculateBarY(index, this.index),
+ x: me.calculateBarX(index, me.index),
+ y: reset ? scaleBase : me.calculateBarY(index, me.index),
// Tooltip
- label: this.chart.data.labels[index],
+ label: me.chart.data.labels[index],
datasetLabel: dataset.label,
// Appearance
- base: reset ? scaleBase : this.calculateBarBase(this.index, index),
- width: this.calculateBarWidth(index),
+ base: reset ? scaleBase : me.calculateBarBase(me.index, index),
+ width: me.calculateBarWidth(index),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
},
calculateBarBase: function(datasetIndex, index) {
- var meta = this.getMeta();
- var yScale = this.getScaleForId(meta.yAxisID);
+ var me = this;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
var base = 0;
if (yScale.options.stacked) {
- var chart = this.chart;
+ var chart = me.chart;
var datasets = chart.data.datasets;
var value = datasets[datasetIndex].data[index];
},
getRuler: function(index) {
- var meta = this.getMeta();
- var xScale = this.getScaleForId(meta.xAxisID);
- var datasetCount = this.getBarCount();
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var datasetCount = me.getBarCount();
var tickWidth;
var categorySpacing = (tickWidth - (tickWidth * xScale.options.categoryPercentage)) / 2;
var fullBarWidth = categoryWidth / datasetCount;
- if (xScale.ticks.length !== this.chart.data.labels.length) {
- var perc = xScale.ticks.length / this.chart.data.labels.length;
+ if (xScale.ticks.length !== me.chart.data.labels.length) {
+ var perc = xScale.ticks.length / me.chart.data.labels.length;
fullBarWidth = fullBarWidth * perc;
}
},
calculateBarX: function(index, datasetIndex) {
- var meta = this.getMeta();
- var xScale = this.getScaleForId(meta.xAxisID);
- var barIndex = this.getBarIndex(datasetIndex);
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var barIndex = me.getBarIndex(datasetIndex);
- var ruler = this.getRuler(index);
- var leftTick = xScale.getPixelForValue(null, index, datasetIndex, this.chart.isCombo);
- leftTick -= this.chart.isCombo ? (ruler.tickWidth / 2) : 0;
+ var ruler = me.getRuler(index);
+ var leftTick = xScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
+ leftTick -= me.chart.isCombo ? (ruler.tickWidth / 2) : 0;
if (xScale.options.stacked) {
return leftTick + (ruler.categoryWidth / 2) + ruler.categorySpacing;
},
calculateBarY: function(index, datasetIndex) {
- var meta = this.getMeta();
- var yScale = this.getScaleForId(meta.yAxisID);
- var value = this.getDataset().data[index];
+ var me = this;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var value = me.getDataset().data[index];
if (yScale.options.stacked) {
sumNeg = 0;
for (var i = 0; i < datasetIndex; i++) {
- var ds = this.chart.data.datasets[i];
- var dsMeta = this.chart.getDatasetMeta(i);
- if (dsMeta.bar && dsMeta.yAxisID === yScale.id && this.chart.isDatasetVisible(i)) {
+ var ds = me.chart.data.datasets[i];
+ var dsMeta = me.chart.getDatasetMeta(i);
+ if (dsMeta.bar && dsMeta.yAxisID === yScale.id && me.chart.isDatasetVisible(i)) {
if (ds.data[index] < 0) {
sumNeg += ds.data[index] || 0;
} else {
},
draw: function(ease) {
+ var me = this;
var easingDecimal = ease || 1;
- helpers.each(this.getMeta().data, function(rectangle, index) {
- var d = this.getDataset().data[index];
+ helpers.each(me.getMeta().data, function(rectangle, index) {
+ var d = me.getDataset().data[index];
if (d !== null && d !== undefined && !isNaN(d)) {
rectangle.transition(easingDecimal).draw();
}
- }, this);
+ }, me);
},
setHoverStyle: function(rectangle) {
Chart.controllers.horizontalBar = Chart.controllers.bar.extend({
updateElement: function updateElement(rectangle, index, reset, numBars) {
- var meta = this.getMeta();
- var xScale = this.getScaleForId(meta.xAxisID);
- var yScale = this.getScaleForId(meta.yAxisID);
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var yScale = me.getScaleForId(meta.yAxisID);
var scaleBase = xScale.getBasePixel();
var custom = rectangle.custom || {};
- var dataset = this.getDataset();
- var rectangleElementOptions = this.chart.options.elements.rectangle;
+ var dataset = me.getDataset();
+ var rectangleElementOptions = me.chart.options.elements.rectangle;
helpers.extend(rectangle, {
// Utility
_xScale: xScale,
_yScale: yScale,
- _datasetIndex: this.index,
+ _datasetIndex: me.index,
_index: index,
// Desired view properties
_model: {
- x: reset ? scaleBase : this.calculateBarX(index, this.index),
- y: this.calculateBarY(index, this.index),
+ x: reset ? scaleBase : me.calculateBarX(index, me.index),
+ y: me.calculateBarY(index, me.index),
// Tooltip
- label: this.chart.data.labels[index],
+ label: me.chart.data.labels[index],
datasetLabel: dataset.label,
// Appearance
- base: reset ? scaleBase : this.calculateBarBase(this.index, index),
- height: this.calculateBarHeight(index),
+ base: reset ? scaleBase : me.calculateBarBase(me.index, index),
+ height: me.calculateBarHeight(index),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
},
draw: function () {
-
var ctx = this._chart.ctx;
var vm = this._view;
},
calculateBarBase: function (datasetIndex, index) {
- var meta = this.getMeta();
- var xScale = this.getScaleForId(meta.xAxisID);
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
var base = 0;
if (xScale.options.stacked) {
- var value = this.chart.data.datasets[datasetIndex].data[index];
+ var value = me.chart.data.datasets[datasetIndex].data[index];
if (value < 0) {
for (var i = 0; i < datasetIndex; i++) {
- var negDS = this.chart.data.datasets[i];
- var negDSMeta = this.chart.getDatasetMeta(i);
- if (negDSMeta.bar && negDSMeta.xAxisID === xScale.id && this.chart.isDatasetVisible(i)) {
+ var negDS = me.chart.data.datasets[i];
+ var negDSMeta = me.chart.getDatasetMeta(i);
+ if (negDSMeta.bar && negDSMeta.xAxisID === xScale.id && me.chart.isDatasetVisible(i)) {
base += negDS.data[index] < 0 ? negDS.data[index] : 0;
}
}
} else {
for (var j = 0; j < datasetIndex; j++) {
- var posDS = this.chart.data.datasets[j];
- var posDSMeta = this.chart.getDatasetMeta(j);
- if (posDSMeta.bar && posDSMeta.xAxisID === xScale.id && this.chart.isDatasetVisible(j)) {
+ var posDS = me.chart.data.datasets[j];
+ var posDSMeta = me.chart.getDatasetMeta(j);
+ if (posDSMeta.bar && posDSMeta.xAxisID === xScale.id && me.chart.isDatasetVisible(j)) {
base += posDS.data[index] > 0 ? posDS.data[index] : 0;
}
}
},
getRuler: function (index) {
- var meta = this.getMeta();
- var yScale = this.getScaleForId(meta.yAxisID);
- var datasetCount = this.getBarCount();
+ var me = this;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var datasetCount = me.getBarCount();
var tickHeight;
if (yScale.options.type === 'category') {
var categorySpacing = (tickHeight - (tickHeight * yScale.options.categoryPercentage)) / 2;
var fullBarHeight = categoryHeight / datasetCount;
- if (yScale.ticks.length !== this.chart.data.labels.length) {
- var perc = yScale.ticks.length / this.chart.data.labels.length;
+ if (yScale.ticks.length !== me.chart.data.labels.length) {
+ var perc = yScale.ticks.length / me.chart.data.labels.length;
fullBarHeight = fullBarHeight * perc;
}
},
calculateBarHeight: function (index) {
- var yScale = this.getScaleForId(this.getMeta().yAxisID);
- var ruler = this.getRuler(index);
+ var me = this;
+ var yScale = me.getScaleForId(me.getMeta().yAxisID);
+ var ruler = me.getRuler(index);
return yScale.options.stacked ? ruler.categoryHeight : ruler.barHeight;
},
calculateBarX: function (index, datasetIndex) {
- var meta = this.getMeta();
- var xScale = this.getScaleForId(meta.xAxisID);
- var value = this.getDataset().data[index];
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var value = me.getDataset().data[index];
if (xScale.options.stacked) {
sumNeg = 0;
for (var i = 0; i < datasetIndex; i++) {
- var ds = this.chart.data.datasets[i];
- var dsMeta = this.chart.getDatasetMeta(i);
- if (dsMeta.bar && dsMeta.xAxisID === xScale.id && this.chart.isDatasetVisible(i)) {
+ var ds = me.chart.data.datasets[i];
+ var dsMeta = me.chart.getDatasetMeta(i);
+ if (dsMeta.bar && dsMeta.xAxisID === xScale.id && me.chart.isDatasetVisible(i)) {
if (ds.data[index] < 0) {
sumNeg += ds.data[index] || 0;
} else {
},
calculateBarY: function (index, datasetIndex) {
- var meta = this.getMeta();
- var yScale = this.getScaleForId(meta.yAxisID);
- var barIndex = this.getBarIndex(datasetIndex);
-
- var ruler = this.getRuler(index);
- var topTick = yScale.getPixelForValue(null, index, datasetIndex, this.chart.isCombo);
- topTick -= this.chart.isCombo ? (ruler.tickHeight / 2) : 0;
+ var me = this;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var barIndex = me.getBarIndex(datasetIndex);
+
+ var ruler = me.getRuler(index);
+ var topTick = yScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
+ topTick -= me.chart.isCombo ? (ruler.tickHeight / 2) : 0;
if (yScale.options.stacked) {
return topTick + (ruler.categoryHeight / 2) + ruler.categorySpacing;
},
update: function update(reset) {
- var _this = this;
- var chart = _this.chart,
+ var me = this;
+ var chart = me.chart,
chartArea = chart.chartArea,
opts = chart.options,
arcOpts = opts.elements.arc,
x: 0,
y: 0
},
- meta = _this.getMeta(),
+ meta = me.getMeta(),
cutoutPercentage = opts.cutoutPercentage,
circumference = opts.circumference;
chart.offsetX = offset.x * chart.outerRadius;
chart.offsetY = offset.y * chart.outerRadius;
- meta.total = _this.calculateTotal();
+ meta.total = me.calculateTotal();
- _this.outerRadius = chart.outerRadius - (chart.radiusLength * _this.getRingIndex(_this.index));
- _this.innerRadius = _this.outerRadius - chart.radiusLength;
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index));
+ me.innerRadius = me.outerRadius - chart.radiusLength;
helpers.each(meta.data, function(arc, index) {
- _this.updateElement(arc, index, reset);
+ me.updateElement(arc, index, reset);
});
},
updateElement: function(arc, index, reset) {
- var _this = this;
- var chart = _this.chart,
+ var me = this;
+ var chart = me.chart,
chartArea = chart.chartArea,
opts = chart.options,
animationOpts = opts.animation,
centerY = (chartArea.top + chartArea.bottom) / 2,
startAngle = opts.rotation, // non reset case handled later
endAngle = opts.rotation, // non reset case handled later
- dataset = _this.getDataset(),
- circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : _this.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)),
- innerRadius = reset && animationOpts.animateScale ? 0 : _this.innerRadius,
- outerRadius = reset && animationOpts.animateScale ? 0 : _this.outerRadius,
+ dataset = me.getDataset(),
+ circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)),
+ innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius,
+ outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius,
custom = arc.custom || {},
valueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
helpers.extend(arc, {
// Utility
- _datasetIndex: _this.index,
+ _datasetIndex: me.index,
_index: index,
// Desired view properties
if (index === 0) {
model.startAngle = opts.rotation;
} else {
- model.startAngle = _this.getMeta().data[index - 1]._model.endAngle;
+ model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
}
model.endAngle = model.startAngle + model.circumference;
draw: function(ease) {
var me = this;
- var meta = this.getMeta();
+ var meta = me.getMeta();
var points = meta.data || [];
var easingDecimal = ease || 1;
var i, ilen;
linkScales: helpers.noop,
update: function update(reset) {
- var _this = this;
- var chart = _this.chart;
+ var me = this;
+ var chart = me.chart;
var chartArea = chart.chartArea;
- var meta = _this.getMeta();
+ var meta = me.getMeta();
var opts = chart.options;
var arcOpts = opts.elements.arc;
var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
- _this.outerRadius = chart.outerRadius - (chart.radiusLength * _this.index);
- _this.innerRadius = _this.outerRadius - chart.radiusLength;
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
+ me.innerRadius = me.outerRadius - chart.radiusLength;
- meta.count = _this.countVisibleElements();
+ meta.count = me.countVisibleElements();
helpers.each(meta.data, function(arc, index) {
- _this.updateElement(arc, index, reset);
+ me.updateElement(arc, index, reset);
});
},
updateElement: function(arc, index, reset) {
- var _this = this;
- var chart = _this.chart;
+ var me = this;
+ var chart = me.chart;
var chartArea = chart.chartArea;
- var dataset = _this.getDataset();
+ var dataset = me.getDataset();
var opts = chart.options;
var animationOpts = opts.animation;
var arcOpts = opts.elements.arc;
var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
var labels = chart.data.labels;
- var circumference = _this.calculateCircumference(dataset.data[index]);
+ var circumference = me.calculateCircumference(dataset.data[index]);
var centerX = (chartArea.left + chartArea.right) / 2;
var centerY = (chartArea.top + chartArea.bottom) / 2;
// If there is NaN data before us, we need to calculate the starting angle correctly.
// We could be way more efficient here, but its unlikely that the polar area chart will have a lot of data
var visibleCount = 0;
- var meta = _this.getMeta();
+ var meta = me.getMeta();
for (var i = 0; i < index; ++i) {
if (!isNaN(dataset.data[i]) && !meta.data[i].hidden) {
++visibleCount;
helpers.extend(arc, {
// Utility
- _datasetIndex: _this.index,
+ _datasetIndex: me.index,
_index: index,
_scale: scale,
});
// Apply border and fill style
- _this.removeHoverStyle(arc);
+ me.removeHoverStyle(arc);
arc.pivot();
},
},
update: function update(reset) {
- var meta = this.getMeta();
+ var me = this;
+ var meta = me.getMeta();
var line = meta.dataset;
var points = meta.data;
var custom = line.custom || {};
- var dataset = this.getDataset();
- var lineElementOptions = this.chart.options.elements.line;
- var scale = this.chart.scale;
+ var dataset = me.getDataset();
+ var lineElementOptions = me.chart.options.elements.line;
+ var scale = me.chart.scale;
// Compatibility: If the properties are defined with only the old name, use those values
if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
helpers.extend(meta.dataset, {
// Utility
- _datasetIndex: this.index,
+ _datasetIndex: me.index,
// Data
_children: points,
_loop: true,
// Update Points
helpers.each(points, function(point, index) {
- this.updateElement(point, index, reset);
- }, this);
+ me.updateElement(point, index, reset);
+ }, me);
// Update bezier control points
- this.updateBezierControlPoints();
+ me.updateBezierControlPoints();
},
updateElement: function(point, index, reset) {
+ var me = this;
var custom = point.custom || {};
- var dataset = this.getDataset();
- var scale = this.chart.scale;
- var pointElementOptions = this.chart.options.elements.point;
+ var dataset = me.getDataset();
+ var scale = me.chart.scale;
+ var pointElementOptions = me.chart.options.elements.point;
var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
helpers.extend(point, {
// Utility
- _datasetIndex: this.index,
+ _datasetIndex: me.index,
_index: index,
_scale: scale,
y: reset ? scale.yCenter : pointPosition.y,
// Appearance
- tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.tension, this.chart.options.elements.line.tension),
+ tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.tension, me.chart.options.elements.line.tension),
radius: custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor),
borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor),
// Now pivot the point for animation
point.pivot();
- }, this);
+ });
},
draw: function(ease) {
dropFrames: 0,
request: null,
addAnimation: function(chartInstance, animationObject, duration, lazy) {
+ var me = this;
if (!lazy) {
chartInstance.animating = true;
}
- for (var index = 0; index < this.animations.length; ++index) {
- if (this.animations[index].chartInstance === chartInstance) {
+ for (var index = 0; index < me.animations.length; ++index) {
+ if (me.animations[index].chartInstance === chartInstance) {
// replacing an in progress animation
- this.animations[index].animationObject = animationObject;
+ me.animations[index].animationObject = animationObject;
return;
}
}
- this.animations.push({
+ me.animations.push({
chartInstance: chartInstance,
animationObject: animationObject
});
// If there are no animations queued, manually kickstart a digest, for lack of a better word
- if (this.animations.length === 1) {
- this.requestAnimationFrame();
+ if (me.animations.length === 1) {
+ me.requestAnimationFrame();
}
},
// Cancel the animation for a given chart instance
}
},
startDigest: function() {
+ var me = this;
var startTime = Date.now();
var framesToDrop = 0;
- if (this.dropFrames > 1) {
- framesToDrop = Math.floor(this.dropFrames);
- this.dropFrames = this.dropFrames % 1;
+ if (me.dropFrames > 1) {
+ framesToDrop = Math.floor(me.dropFrames);
+ me.dropFrames = me.dropFrames % 1;
}
var i = 0;
- while (i < this.animations.length) {
- if (this.animations[i].animationObject.currentStep === null) {
- this.animations[i].animationObject.currentStep = 0;
+ while (i < me.animations.length) {
+ if (me.animations[i].animationObject.currentStep === null) {
+ me.animations[i].animationObject.currentStep = 0;
}
- this.animations[i].animationObject.currentStep += 1 + framesToDrop;
+ me.animations[i].animationObject.currentStep += 1 + framesToDrop;
- if (this.animations[i].animationObject.currentStep > this.animations[i].animationObject.numSteps) {
- this.animations[i].animationObject.currentStep = this.animations[i].animationObject.numSteps;
+ if (me.animations[i].animationObject.currentStep > me.animations[i].animationObject.numSteps) {
+ me.animations[i].animationObject.currentStep = me.animations[i].animationObject.numSteps;
}
- this.animations[i].animationObject.render(this.animations[i].chartInstance, this.animations[i].animationObject);
- if (this.animations[i].animationObject.onAnimationProgress && this.animations[i].animationObject.onAnimationProgress.call) {
- this.animations[i].animationObject.onAnimationProgress.call(this.animations[i].chartInstance, this.animations[i]);
+ me.animations[i].animationObject.render(me.animations[i].chartInstance, me.animations[i].animationObject);
+ if (me.animations[i].animationObject.onAnimationProgress && me.animations[i].animationObject.onAnimationProgress.call) {
+ me.animations[i].animationObject.onAnimationProgress.call(me.animations[i].chartInstance, me.animations[i]);
}
- if (this.animations[i].animationObject.currentStep === this.animations[i].animationObject.numSteps) {
- if (this.animations[i].animationObject.onAnimationComplete && this.animations[i].animationObject.onAnimationComplete.call) {
- this.animations[i].animationObject.onAnimationComplete.call(this.animations[i].chartInstance, this.animations[i]);
+ if (me.animations[i].animationObject.currentStep === me.animations[i].animationObject.numSteps) {
+ if (me.animations[i].animationObject.onAnimationComplete && me.animations[i].animationObject.onAnimationComplete.call) {
+ me.animations[i].animationObject.onAnimationComplete.call(me.animations[i].chartInstance, me.animations[i]);
}
// executed the last frame. Remove the animation.
- this.animations[i].chartInstance.animating = false;
+ me.animations[i].chartInstance.animating = false;
- this.animations.splice(i, 1);
+ me.animations.splice(i, 1);
} else {
++i;
}
}
var endTime = Date.now();
- var dropFrames = (endTime - startTime) / this.frameDuration;
+ var dropFrames = (endTime - startTime) / me.frameDuration;
- this.dropFrames += dropFrames;
+ me.dropFrames += dropFrames;
// Do we have more stuff to animate?
- if (this.animations.length > 0) {
- this.requestAnimationFrame();
+ if (me.animations.length > 0) {
+ me.requestAnimationFrame();
}
}
};
helpers.extend(Chart.Controller.prototype, {
initialize: function initialize() {
+ var me = this;
// Before init plugin notification
- Chart.pluginService.notifyPlugins('beforeInit', [this]);
+ Chart.pluginService.notifyPlugins('beforeInit', [me]);
- this.bindEvents();
+ me.bindEvents();
// Make sure controllers are built first so that each dataset is bound to an axis before the scales
// are built
- this.ensureScalesHaveIDs();
- this.buildOrUpdateControllers();
- this.buildScales();
- this.updateLayout();
- this.resetElements();
- this.initToolTip();
- this.update();
+ me.ensureScalesHaveIDs();
+ me.buildOrUpdateControllers();
+ me.buildScales();
+ me.updateLayout();
+ me.resetElements();
+ me.initToolTip();
+ me.update();
// After init plugin notification
- Chart.pluginService.notifyPlugins('afterInit', [this]);
+ Chart.pluginService.notifyPlugins('afterInit', [me]);
- return this;
+ return me;
},
clear: function clear() {
},
resize: function resize(silent) {
- var canvas = this.chart.canvas;
- var newWidth = helpers.getMaximumWidth(this.chart.canvas);
- var newHeight = (this.options.maintainAspectRatio && isNaN(this.chart.aspectRatio) === false && isFinite(this.chart.aspectRatio) && this.chart.aspectRatio !== 0) ? newWidth / this.chart.aspectRatio : helpers.getMaximumHeight(this.chart.canvas);
+ var me = this;
+ var chart = me.chart;
+ var canvas = chart.canvas;
+ var newWidth = helpers.getMaximumWidth(canvas);
+ var aspectRatio = chart.aspectRatio;
+ var newHeight = (me.options.maintainAspectRatio && isNaN(aspectRatio) === false && isFinite(aspectRatio) && aspectRatio !== 0) ? newWidth / aspectRatio : helpers.getMaximumHeight(canvas);
- var sizeChanged = this.chart.width !== newWidth || this.chart.height !== newHeight;
+ var sizeChanged = chart.width !== newWidth || chart.height !== newHeight;
- if (!sizeChanged)
- return this;
+ if (!sizeChanged) {
+ return me;
+ }
+
+ canvas.width = chart.width = newWidth;
+ canvas.height = chart.height = newHeight;
- canvas.width = this.chart.width = newWidth;
- canvas.height = this.chart.height = newHeight;
+ helpers.retinaScale(chart);
- helpers.retinaScale(this.chart);
+ // Notify any plugins about the resize
+ var newSize = { width: newWidth, height: newHeight };
+ Chart.pluginService.notifyPlugins('resize', [me, newSize]);
+
+ // Notify of resize
+ if (me.options.onResize) {
+ me.options.onResize(me, newSize);
+ }
if (!silent) {
- this.stop();
- this.update(this.options.responsiveAnimationDuration);
+ me.stop();
+ me.update(me.options.responsiveAnimationDuration);
}
- return this;
+ return me;
},
ensureScalesHaveIDs: function ensureScalesHaveIDs() {
},
buildOrUpdateControllers: function buildOrUpdateControllers() {
+ var me = this;
var types = [];
var newControllers = [];
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- var meta = this.getDatasetMeta(datasetIndex);
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ var meta = me.getDatasetMeta(datasetIndex);
if (!meta.type) {
- meta.type = dataset.type || this.config.type;
+ meta.type = dataset.type || me.config.type;
}
types.push(meta.type);
if (meta.controller) {
meta.controller.updateIndex(datasetIndex);
} else {
- meta.controller = new Chart.controllers[meta.type](this, datasetIndex);
+ meta.controller = new Chart.controllers[meta.type](me, datasetIndex);
newControllers.push(meta.controller);
}
- }, this);
+ }, me);
if (types.length > 1) {
for (var i = 1; i < types.length; i++) {
if (types[i] !== types[i - 1]) {
- this.isCombo = true;
+ me.isCombo = true;
break;
}
}
},
resetElements: function resetElements() {
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- this.getDatasetMeta(datasetIndex).controller.reset();
- }, this);
+ var me = this;
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.reset();
+ }, me);
},
update: function update(animationDuration, lazy) {
- Chart.pluginService.notifyPlugins('beforeUpdate', [this]);
+ var me = this;
+ Chart.pluginService.notifyPlugins('beforeUpdate', [me]);
// In case the entire data object changed
- this.tooltip._data = this.data;
+ me.tooltip._data = me.data;
// Make sure dataset controllers are updated and new controllers are reset
- var newControllers = this.buildOrUpdateControllers();
+ var newControllers = me.buildOrUpdateControllers();
// Make sure all dataset controllers have correct meta data counts
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- this.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
- }, this);
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
+ }, me);
- Chart.layoutService.update(this, this.chart.width, this.chart.height);
+ Chart.layoutService.update(me, me.chart.width, me.chart.height);
// Apply changes to the dataets that require the scales to have been calculated i.e BorderColor chages
- Chart.pluginService.notifyPlugins('afterScaleUpdate', [this]);
+ Chart.pluginService.notifyPlugins('afterScaleUpdate', [me]);
// Can only reset the new controllers after the scales have been updated
helpers.each(newControllers, function(controller) {
});
// This will loop through any data and do the appropriate element update for the type
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- this.getDatasetMeta(datasetIndex).controller.update();
- }, this);
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.update();
+ }, me);
// Do this before render so that any plugins that need final scale updates can use it
- Chart.pluginService.notifyPlugins('afterUpdate', [this]);
+ Chart.pluginService.notifyPlugins('afterUpdate', [me]);
- this.render(animationDuration, lazy);
+ me.render(animationDuration, lazy);
},
render: function render(duration, lazy) {
- Chart.pluginService.notifyPlugins('beforeRender', [this]);
+ var me = this;
+ Chart.pluginService.notifyPlugins('beforeRender', [me]);
- var animationOptions = this.options.animation;
+ var animationOptions = me.options.animation;
if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
var animation = new Chart.Animation();
animation.numSteps = (duration || animationOptions.duration) / 16.66; //60 fps
animation.onAnimationProgress = animationOptions.onProgress;
animation.onAnimationComplete = animationOptions.onComplete;
- Chart.animationService.addAnimation(this, animation, duration, lazy);
+ Chart.animationService.addAnimation(me, animation, duration, lazy);
} else {
- this.draw();
+ me.draw();
if (animationOptions && animationOptions.onComplete && animationOptions.onComplete.call) {
- animationOptions.onComplete.call(this);
+ animationOptions.onComplete.call(me);
}
}
- return this;
+ return me;
},
draw: function(ease) {
+ var me = this;
var easingDecimal = ease || 1;
- this.clear();
+ me.clear();
- Chart.pluginService.notifyPlugins('beforeDraw', [this, easingDecimal]);
+ Chart.pluginService.notifyPlugins('beforeDraw', [me, easingDecimal]);
// Draw all the scales
- helpers.each(this.boxes, function(box) {
- box.draw(this.chartArea);
- }, this);
- if (this.scale) {
- this.scale.draw();
+ helpers.each(me.boxes, function(box) {
+ box.draw(me.chartArea);
+ }, me);
+ if (me.scale) {
+ me.scale.draw();
}
- Chart.pluginService.notifyPlugins('beforeDatasetDraw', [this, easingDecimal]);
+ Chart.pluginService.notifyPlugins('beforeDatasetDraw', [me, easingDecimal]);
// Draw each dataset via its respective controller (reversed to support proper line stacking)
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- if (this.isDatasetVisible(datasetIndex)) {
- this.getDatasetMeta(datasetIndex).controller.draw(ease);
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ if (me.isDatasetVisible(datasetIndex)) {
+ me.getDatasetMeta(datasetIndex).controller.draw(ease);
}
- }, this, true);
+ }, me, true);
- Chart.pluginService.notifyPlugins('afterDatasetDraw', [this, easingDecimal]);
+ Chart.pluginService.notifyPlugins('afterDatasetDraw', [me, easingDecimal]);
// Finally draw the tooltip
- this.tooltip.transition(easingDecimal).draw();
+ me.tooltip.transition(easingDecimal).draw();
- Chart.pluginService.notifyPlugins('afterDraw', [this, easingDecimal]);
+ Chart.pluginService.notifyPlugins('afterDraw', [me, easingDecimal]);
},
// Get the single element that was clicked on
// @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
getElementAtEvent: function(e) {
- var eventPosition = helpers.getRelativePosition(e, this.chart);
+ var me = this;
+ var eventPosition = helpers.getRelativePosition(e, me.chart);
var elementsArray = [];
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- if (this.isDatasetVisible(datasetIndex)) {
- var meta = this.getDatasetMeta(datasetIndex);
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ if (me.isDatasetVisible(datasetIndex)) {
+ var meta = me.getDatasetMeta(datasetIndex);
helpers.each(meta.data, function(element, index) {
if (element.inRange(eventPosition.x, eventPosition.y)) {
elementsArray.push(element);
}
});
}
- }, this);
+ });
return elementsArray;
},
getElementsAtEvent: function(e) {
- var eventPosition = helpers.getRelativePosition(e, this.chart);
+ var me = this;
+ var eventPosition = helpers.getRelativePosition(e, me.chart);
var elementsArray = [];
var found = (function() {
- if (this.data.datasets) {
- for (var i = 0; i < this.data.datasets.length; i++) {
- var meta = this.getDatasetMeta(i);
- if (this.isDatasetVisible(i)) {
+ if (me.data.datasets) {
+ for (var i = 0; i < me.data.datasets.length; i++) {
+ var meta = me.getDatasetMeta(i);
+ if (me.isDatasetVisible(i)) {
for (var j = 0; j < meta.data.length; j++) {
if (meta.data[j].inRange(eventPosition.x, eventPosition.y)) {
return meta.data[j];
}
}
}
- }).call(this);
+ }).call(me);
if (!found) {
return elementsArray;
}
- helpers.each(this.data.datasets, function(dataset, datasetIndex) {
- if (this.isDatasetVisible(datasetIndex)) {
- var meta = this.getDatasetMeta(datasetIndex);
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ if (me.isDatasetVisible(datasetIndex)) {
+ var meta = me.getDatasetMeta(datasetIndex);
elementsArray.push(meta.data[found._index]);
}
- }, this);
+ }, me);
return elementsArray;
},
},
getDatasetMeta: function(datasetIndex) {
- var dataset = this.data.datasets[datasetIndex];
+ var me = this;
+ var dataset = me.data.datasets[datasetIndex];
if (!dataset._meta) {
dataset._meta = {};
}
- var meta = dataset._meta[this.id];
+ var meta = dataset._meta[me.id];
if (!meta) {
- meta = dataset._meta[this.id] = {
+ meta = dataset._meta[me.id] = {
type: null,
data: [],
dataset: null,
},
destroy: function destroy() {
- this.stop();
- this.clear();
- helpers.unbindEvents(this, this.events);
- helpers.removeResizeListener(this.chart.canvas.parentNode);
+ var me = this;
+ me.stop();
+ me.clear();
+ helpers.unbindEvents(me, me.events);
+ helpers.removeResizeListener(me.chart.canvas.parentNode);
// Reset canvas height/width attributes
- var canvas = this.chart.canvas;
- canvas.width = this.chart.width;
- canvas.height = this.chart.height;
+ var canvas = me.chart.canvas;
+ canvas.width = me.chart.width;
+ canvas.height = me.chart.height;
// if we scaled the canvas in response to a devicePixelRatio !== 1, we need to undo that transform here
- if (this.chart.originalDevicePixelRatio !== undefined) {
- this.chart.ctx.scale(1 / this.chart.originalDevicePixelRatio, 1 / this.chart.originalDevicePixelRatio);
+ if (me.chart.originalDevicePixelRatio !== undefined) {
+ me.chart.ctx.scale(1 / me.chart.originalDevicePixelRatio, 1 / me.chart.originalDevicePixelRatio);
}
// Reset to the old style since it may have been changed by the device pixel ratio changes
- canvas.style.width = this.chart.originalCanvasStyleWidth;
- canvas.style.height = this.chart.originalCanvasStyleHeight;
+ canvas.style.width = me.chart.originalCanvasStyleWidth;
+ canvas.style.height = me.chart.originalCanvasStyleHeight;
- Chart.pluginService.notifyPlugins('destroy', [this]);
+ Chart.pluginService.notifyPlugins('destroy', [me]);
- delete Chart.instances[this.id];
+ delete Chart.instances[me.id];
},
toBase64Image: function toBase64Image() {
},
initToolTip: function initToolTip() {
- this.tooltip = new Chart.Tooltip({
- _chart: this.chart,
- _chartInstance: this,
- _data: this.data,
- _options: this.options.tooltips
- }, this);
+ var me = this;
+ me.tooltip = new Chart.Tooltip({
+ _chart: me.chart,
+ _chartInstance: me,
+ _data: me.data,
+ _options: me.options.tooltips
+ }, me);
},
bindEvents: function bindEvents() {
- helpers.bindEvents(this, this.options.events, function(evt) {
- this.eventHandler(evt);
+ var me = this;
+ helpers.bindEvents(me, me.options.events, function(evt) {
+ me.eventHandler(evt);
});
},
dataElementType: null,
initialize: function(chart, datasetIndex) {
- this.chart = chart;
- this.index = datasetIndex;
- this.linkScales();
- this.addElements();
+ var me = this;
+ me.chart = chart;
+ me.index = datasetIndex;
+ me.linkScales();
+ me.addElements();
},
updateIndex: function(datasetIndex) {
},
linkScales: function() {
- var meta = this.getMeta();
- var dataset = this.getDataset();
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
if (meta.xAxisID === null) {
- meta.xAxisID = dataset.xAxisID || this.chart.options.scales.xAxes[0].id;
+ meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
}
if (meta.yAxisID === null) {
- meta.yAxisID = dataset.yAxisID || this.chart.options.scales.yAxes[0].id;
+ meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
}
},
helpers.extend(this, configuration);
this.initialize.apply(this, arguments);
};
+
helpers.extend(Chart.Element.prototype, {
+
initialize: function() {
this.hidden = false;
},
+
pivot: function() {
- if (!this._view) {
- this._view = helpers.clone(this._model);
+ var me = this;
+ if (!me._view) {
+ me._view = helpers.clone(me._model);
}
- this._start = helpers.clone(this._view);
- return this;
+ me._start = helpers.clone(me._view);
+ return me;
},
+
transition: function(ease) {
- if (!this._view) {
- this._view = helpers.clone(this._model);
+ var me = this;
+
+ if (!me._view) {
+ me._view = helpers.clone(me._model);
}
// No animation -> No Transition
if (ease === 1) {
- this._view = this._model;
- this._start = null;
- return this;
+ me._view = me._model;
+ me._start = null;
+ return me;
}
- if (!this._start) {
- this.pivot();
+ if (!me._start) {
+ me.pivot();
}
- helpers.each(this._model, function(value, key) {
+ helpers.each(me._model, function(value, key) {
if (key[0] === '_') {
// Only non-underscored properties
}
// Init if doesn't exist
- else if (!this._view.hasOwnProperty(key)) {
- if (typeof value === 'number' && !isNaN(this._view[key])) {
- this._view[key] = value * ease;
+ else if (!me._view.hasOwnProperty(key)) {
+ if (typeof value === 'number' && !isNaN(me._view[key])) {
+ me._view[key] = value * ease;
} else {
- this._view[key] = value;
+ me._view[key] = value;
}
}
// No unnecessary computations
- else if (value === this._view[key]) {
+ else if (value === me._view[key]) {
// It's the same! Woohoo!
}
// Color transitions if possible
else if (typeof value === 'string') {
try {
- var color = helpers.color(this._model[key]).mix(helpers.color(this._start[key]), ease);
- this._view[key] = color.rgbString();
+ var color = helpers.color(me._model[key]).mix(helpers.color(me._start[key]), ease);
+ me._view[key] = color.rgbString();
} catch (err) {
- this._view[key] = value;
+ me._view[key] = value;
}
}
// Number transitions
else if (typeof value === 'number') {
- var startVal = this._start[key] !== undefined && isNaN(this._start[key]) === false ? this._start[key] : 0;
- this._view[key] = ((this._model[key] - startVal) * ease) + startVal;
+ var startVal = me._start[key] !== undefined && isNaN(me._start[key]) === false ? me._start[key] : 0;
+ me._view[key] = ((me._model[key] - startVal) * ease) + startVal;
}
// Everything else
else {
- this._view[key] = value;
+ me._view[key] = value;
}
- }, this);
+ }, me);
- return this;
+ return me;
},
+
tooltipPosition: function() {
return {
x: this._model.x,
y: this._model.y
};
},
+
hasValue: function() {
return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
}
return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
return {
text: dataset.label,
- fillStyle: dataset.backgroundColor,
+ fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
hidden: !chart.isDatasetVisible(i),
lineCap: dataset.borderCapStyle,
lineDash: dataset.borderDash,
beforeUpdate: noop,
update: function(maxWidth, maxHeight, margins) {
+ var me = this;
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
- this.beforeUpdate();
+ me.beforeUpdate();
// Absorb the master measurements
- this.maxWidth = maxWidth;
- this.maxHeight = maxHeight;
- this.margins = margins;
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
// Dimensions
- this.beforeSetDimensions();
- this.setDimensions();
- this.afterSetDimensions();
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
// Labels
- this.beforeBuildLabels();
- this.buildLabels();
- this.afterBuildLabels();
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
// Fit
- this.beforeFit();
- this.fit();
- this.afterFit();
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
//
- this.afterUpdate();
+ me.afterUpdate();
- return this.minSize;
+ return me.minSize;
},
afterUpdate: noop,
beforeSetDimensions: noop,
setDimensions: function() {
+ var me = this;
// Set the unconstrained dimension before label rotation
- if (this.isHorizontal()) {
+ if (me.isHorizontal()) {
// Reset position before calculating rotation
- this.width = this.maxWidth;
- this.left = 0;
- this.right = this.width;
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
} else {
- this.height = this.maxHeight;
+ me.height = me.maxHeight;
// Reset position before calculating rotation
- this.top = 0;
- this.bottom = this.height;
+ me.top = 0;
+ me.bottom = me.height;
}
// Reset padding
- this.paddingLeft = 0;
- this.paddingTop = 0;
- this.paddingRight = 0;
- this.paddingBottom = 0;
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
// Reset minSize
- this.minSize = {
+ me.minSize = {
width: 0,
height: 0
};
beforeBuildLabels: noop,
buildLabels: function() {
- this.legendItems = this.options.labels.generateLabels.call(this, this.chart);
- if(this.options.reverse){
- this.legendItems.reverse();
+ var me = this;
+ me.legendItems = me.options.labels.generateLabels.call(me, me.chart);
+ if(me.options.reverse){
+ me.legendItems.reverse();
}
},
afterBuildLabels: noop,
beforeFit: noop,
fit: function() {
- var opts = this.options;
+ var me = this;
+ var opts = me.options;
var labelOpts = opts.labels;
var display = opts.display;
- var ctx = this.ctx;
+ var ctx = me.ctx;
var globalDefault = Chart.defaults.global,
itemOrDefault = helpers.getValueOrDefault,
labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
// Reset hit boxes
- var hitboxes = this.legendHitBoxes = [];
+ var hitboxes = me.legendHitBoxes = [];
- var minSize = this.minSize;
- var isHorizontal = this.isHorizontal();
+ var minSize = me.minSize;
+ var isHorizontal = me.isHorizontal();
if (isHorizontal) {
- minSize.width = this.maxWidth; // fill all the width
+ minSize.width = me.maxWidth; // fill all the width
minSize.height = display ? 10 : 0;
} else {
minSize.width = display ? 10 : 0;
- minSize.height = this.maxHeight; // fill all the height
+ minSize.height = me.maxHeight; // fill all the height
}
// Increase sizes here
// Labels
// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
- var lineWidths = this.lineWidths = [0];
- var totalHeight = this.legendItems.length ? fontSize + (labelOpts.padding) : 0;
+ var lineWidths = me.lineWidths = [0];
+ var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
ctx.textAlign = "left";
ctx.textBaseline = 'top';
ctx.font = labelFont;
- helpers.each(this.legendItems, function(legendItem, i) {
+ helpers.each(me.legendItems, function(legendItem, i) {
var width = labelOpts.boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
- if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= this.width) {
+ if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
totalHeight += fontSize + (labelOpts.padding);
- lineWidths[lineWidths.length] = this.left;
+ lineWidths[lineWidths.length] = me.left;
}
// Store the hitbox width and height here. Final position will be updated in `draw`
};
lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
- }, this);
+ }, me);
minSize.height += totalHeight;
}
}
- this.width = minSize.width;
- this.height = minSize.height;
+ me.width = minSize.width;
+ me.height = minSize.height;
},
afterFit: noop,
// Actualy draw the legend on the canvas
draw: function() {
- var opts = this.options;
+ var me = this;
+ var opts = me.options;
var labelOpts = opts.labels;
var globalDefault = Chart.defaults.global,
lineDefault = globalDefault.elements.line,
- legendWidth = this.width,
- lineWidths = this.lineWidths;
+ legendWidth = me.width,
+ lineWidths = me.lineWidths;
if (opts.display) {
- var ctx = this.ctx,
+ var ctx = me.ctx,
cursor = {
- x: this.left + ((legendWidth - lineWidths[0]) / 2),
- y: this.top + labelOpts.padding,
+ x: me.left + ((legendWidth - lineWidths[0]) / 2),
+ y: me.top + labelOpts.padding,
line: 0
},
itemOrDefault = helpers.getValueOrDefault,
labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
// Horizontal
- if (this.isHorizontal()) {
+ if (me.isHorizontal()) {
// Labels
ctx.textAlign = "left";
ctx.textBaseline = 'top';
ctx.font = labelFont;
var boxWidth = labelOpts.boxWidth,
- hitboxes = this.legendHitBoxes;
+ hitboxes = me.legendHitBoxes;
- helpers.each(this.legendItems, function(legendItem, i) {
+ helpers.each(me.legendItems, function(legendItem, i) {
var textWidth = ctx.measureText(legendItem.text).width,
width = boxWidth + (fontSize / 2) + textWidth,
x = cursor.x,
if (x + width >= legendWidth) {
y = cursor.y += fontSize + (labelOpts.padding);
cursor.line++;
- x = cursor.x = this.left + ((legendWidth - lineWidths[cursor.line]) / 2);
+ x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
}
// Set the ctx for the box
}
cursor.x += width + (labelOpts.padding);
- }, this);
+ }, me);
} else {
}
// Handle an event
handleEvent: function(e) {
- var position = helpers.getRelativePosition(e, this.chart.chart),
+ var me = this;
+ var position = helpers.getRelativePosition(e, me.chart.chart),
x = position.x,
y = position.y,
- opts = this.options;
+ opts = me.options;
- if (x >= this.left && x <= this.right && y >= this.top && y <= this.bottom) {
+ if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
// See if we are touching one of the dataset boxes
- var lh = this.legendHitBoxes;
+ var lh = me.legendHitBoxes;
for (var i = 0; i < lh.length; ++i) {
var hitBox = lh[i];
if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
// Touching an element
if (opts.onClick) {
- opts.onClick.call(this, e, this.legendItems[i]);
+ opts.onClick.call(me, e, me.legendItems[i]);
}
break;
}
helpers.callCallback(this.options.beforeUpdate, [this]);
},
update: function(maxWidth, maxHeight, margins) {
+ var me = this;
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
- this.beforeUpdate();
+ me.beforeUpdate();
// Absorb the master measurements
- this.maxWidth = maxWidth;
- this.maxHeight = maxHeight;
- this.margins = helpers.extend({
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = helpers.extend({
left: 0,
right: 0,
top: 0,
}, margins);
// Dimensions
- this.beforeSetDimensions();
- this.setDimensions();
- this.afterSetDimensions();
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
// Data min/max
- this.beforeDataLimits();
- this.determineDataLimits();
- this.afterDataLimits();
+ me.beforeDataLimits();
+ me.determineDataLimits();
+ me.afterDataLimits();
// Ticks
- this.beforeBuildTicks();
- this.buildTicks();
- this.afterBuildTicks();
+ me.beforeBuildTicks();
+ me.buildTicks();
+ me.afterBuildTicks();
- this.beforeTickToLabelConversion();
- this.convertTicksToLabels();
- this.afterTickToLabelConversion();
+ me.beforeTickToLabelConversion();
+ me.convertTicksToLabels();
+ me.afterTickToLabelConversion();
// Tick Rotation
- this.beforeCalculateTickRotation();
- this.calculateTickRotation();
- this.afterCalculateTickRotation();
+ me.beforeCalculateTickRotation();
+ me.calculateTickRotation();
+ me.afterCalculateTickRotation();
// Fit
- this.beforeFit();
- this.fit();
- this.afterFit();
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
//
- this.afterUpdate();
+ me.afterUpdate();
- return this.minSize;
+ return me.minSize;
},
afterUpdate: function() {
helpers.callCallback(this.options.beforeSetDimensions, [this]);
},
setDimensions: function() {
+ var me = this;
// Set the unconstrained dimension before label rotation
- if (this.isHorizontal()) {
+ if (me.isHorizontal()) {
// Reset position before calculating rotation
- this.width = this.maxWidth;
- this.left = 0;
- this.right = this.width;
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
} else {
- this.height = this.maxHeight;
+ me.height = me.maxHeight;
// Reset position before calculating rotation
- this.top = 0;
- this.bottom = this.height;
+ me.top = 0;
+ me.bottom = me.height;
}
// Reset padding
- this.paddingLeft = 0;
- this.paddingTop = 0;
- this.paddingRight = 0;
- this.paddingBottom = 0;
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
},
afterSetDimensions: function() {
helpers.callCallback(this.options.afterSetDimensions, [this]);
helpers.callCallback(this.options.beforeTickToLabelConversion, [this]);
},
convertTicksToLabels: function() {
+ var me = this;
// Convert ticks to strings
- this.ticks = this.ticks.map(function(numericalTick, index, ticks) {
- if (this.options.ticks.userCallback) {
- return this.options.ticks.userCallback(numericalTick, index, ticks);
+ me.ticks = me.ticks.map(function(numericalTick, index, ticks) {
+ if (me.options.ticks.userCallback) {
+ return me.options.ticks.userCallback(numericalTick, index, ticks);
}
- return this.options.ticks.callback(numericalTick, index, ticks);
+ return me.options.ticks.callback(numericalTick, index, ticks);
},
- this);
+ me);
},
afterTickToLabelConversion: function() {
helpers.callCallback(this.options.afterTickToLabelConversion, [this]);
helpers.callCallback(this.options.beforeCalculateTickRotation, [this]);
},
calculateTickRotation: function() {
- var context = this.ctx;
+ var me = this;
+ var context = me.ctx;
var globalDefaults = Chart.defaults.global;
- var optionTicks = this.options.ticks;
+ var optionTicks = me.options.ticks;
//Get the width of each grid by calculating the difference
//between x offsets between 0 and 1.
var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
context.font = tickLabelFont;
- var firstWidth = context.measureText(this.ticks[0]).width;
- var lastWidth = context.measureText(this.ticks[this.ticks.length - 1]).width;
+ var firstWidth = context.measureText(me.ticks[0]).width;
+ var lastWidth = context.measureText(me.ticks[me.ticks.length - 1]).width;
var firstRotated;
- this.labelRotation = optionTicks.minRotation || 0;
- this.paddingRight = 0;
- this.paddingLeft = 0;
+ me.labelRotation = optionTicks.minRotation || 0;
+ me.paddingRight = 0;
+ me.paddingLeft = 0;
- if (this.options.display) {
- if (this.isHorizontal()) {
- this.paddingRight = lastWidth / 2 + 3;
- this.paddingLeft = firstWidth / 2 + 3;
+ if (me.options.display) {
+ if (me.isHorizontal()) {
+ me.paddingRight = lastWidth / 2 + 3;
+ me.paddingLeft = firstWidth / 2 + 3;
- if (!this.longestTextCache) {
- this.longestTextCache = {};
+ if (!me.longestTextCache) {
+ me.longestTextCache = {};
}
- var originalLabelWidth = helpers.longestText(context, tickLabelFont, this.ticks, this.longestTextCache);
+ var originalLabelWidth = helpers.longestText(context, tickLabelFont, me.ticks, me.longestTextCache);
var labelWidth = originalLabelWidth;
var cosRotation;
var sinRotation;
// Allow 3 pixels x2 padding either side for label readability
// only the index matters for a dataset scale, but we want a consistent interface between scales
- var tickWidth = this.getPixelForTick(1) - this.getPixelForTick(0) - 6;
+ var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
//Max label rotation can be set or default to 90 - also act as a loop counter
- while (labelWidth > tickWidth && this.labelRotation < optionTicks.maxRotation) {
- cosRotation = Math.cos(helpers.toRadians(this.labelRotation));
- sinRotation = Math.sin(helpers.toRadians(this.labelRotation));
+ while (labelWidth > tickWidth && me.labelRotation < optionTicks.maxRotation) {
+ cosRotation = Math.cos(helpers.toRadians(me.labelRotation));
+ sinRotation = Math.sin(helpers.toRadians(me.labelRotation));
firstRotated = cosRotation * firstWidth;
// We're right aligning the text now.
- if (firstRotated + tickFontSize / 2 > this.yLabelWidth) {
- this.paddingLeft = firstRotated + tickFontSize / 2;
+ if (firstRotated + tickFontSize / 2 > me.yLabelWidth) {
+ me.paddingLeft = firstRotated + tickFontSize / 2;
}
- this.paddingRight = tickFontSize / 2;
+ me.paddingRight = tickFontSize / 2;
- if (sinRotation * originalLabelWidth > this.maxHeight) {
+ if (sinRotation * originalLabelWidth > me.maxHeight) {
// go back one step
- this.labelRotation--;
+ me.labelRotation--;
break;
}
- this.labelRotation++;
+ me.labelRotation++;
labelWidth = cosRotation * originalLabelWidth;
}
}
}
- if (this.margins) {
- this.paddingLeft = Math.max(this.paddingLeft - this.margins.left, 0);
- this.paddingRight = Math.max(this.paddingRight - this.margins.right, 0);
+ if (me.margins) {
+ me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
+ me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
}
},
afterCalculateTickRotation: function() {
helpers.callCallback(this.options.beforeFit, [this]);
},
fit: function() {
+ var me = this;
// Reset
- var minSize = this.minSize = {
+ var minSize = me.minSize = {
width: 0,
height: 0
};
- var opts = this.options;
+ var opts = me.options;
var globalDefaults = Chart.defaults.global;
var tickOpts = opts.ticks;
var scaleLabelOpts = opts.scaleLabel;
var display = opts.display;
- var isHorizontal = this.isHorizontal();
+ var isHorizontal = me.isHorizontal();
var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
var tickFontStyle = helpers.getValueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
// Width
if (isHorizontal) {
// subtract the margins to line up with the chartArea if we are a full width scale
- minSize.width = this.isFullWidth() ? this.maxWidth - this.margins.left - this.margins.right : this.maxWidth;
+ minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
} else {
minSize.width = display ? tickMarkLength : 0;
}
if (isHorizontal) {
minSize.height = display ? tickMarkLength : 0;
} else {
- minSize.height = this.maxHeight; // fill all the height
+ minSize.height = me.maxHeight; // fill all the height
}
// Are we showing a title for the scale?
if (tickOpts.display && display) {
// Don't bother fitting the ticks if we are not showing them
- if (!this.longestTextCache) {
- this.longestTextCache = {};
+ if (!me.longestTextCache) {
+ me.longestTextCache = {};
}
- var largestTextWidth = helpers.longestText(this.ctx, tickLabelFont, this.ticks, this.longestTextCache);
+ var largestTextWidth = helpers.longestText(me.ctx, tickLabelFont, me.ticks, me.longestTextCache);
if (isHorizontal) {
// A horizontal axis is more constrained by the height.
- this.longestLabelWidth = largestTextWidth;
+ me.longestLabelWidth = largestTextWidth;
// TODO - improve this calculation
- var labelHeight = (Math.sin(helpers.toRadians(this.labelRotation)) * this.longestLabelWidth) + 1.5 * tickFontSize;
+ var labelHeight = (Math.sin(helpers.toRadians(me.labelRotation)) * me.longestLabelWidth) + 1.5 * tickFontSize;
- minSize.height = Math.min(this.maxHeight, minSize.height + labelHeight);
- this.ctx.font = tickLabelFont;
+ minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight);
+ me.ctx.font = tickLabelFont;
- var firstLabelWidth = this.ctx.measureText(this.ticks[0]).width;
- var lastLabelWidth = this.ctx.measureText(this.ticks[this.ticks.length - 1]).width;
+ var firstLabelWidth = me.ctx.measureText(me.ticks[0]).width;
+ var lastLabelWidth = me.ctx.measureText(me.ticks[me.ticks.length - 1]).width;
// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned which means that the right padding is dominated
// by the font height
- var cosRotation = Math.cos(helpers.toRadians(this.labelRotation));
- var sinRotation = Math.sin(helpers.toRadians(this.labelRotation));
- this.paddingLeft = this.labelRotation !== 0 ? (cosRotation * firstLabelWidth) + 3 : firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
- this.paddingRight = this.labelRotation !== 0 ? (sinRotation * (tickFontSize / 2)) + 3 : lastLabelWidth / 2 + 3; // when rotated
+ var cosRotation = Math.cos(helpers.toRadians(me.labelRotation));
+ var sinRotation = Math.sin(helpers.toRadians(me.labelRotation));
+ me.paddingLeft = me.labelRotation !== 0 ? (cosRotation * firstLabelWidth) + 3 : firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
+ me.paddingRight = me.labelRotation !== 0 ? (sinRotation * (tickFontSize / 2)) + 3 : lastLabelWidth / 2 + 3; // when rotated
} else {
// A vertical axis is more constrained by the width. Labels are the dominant factor here, so get that length first
- var maxLabelWidth = this.maxWidth - minSize.width;
+ var maxLabelWidth = me.maxWidth - minSize.width;
// Account for padding
var mirror = tickOpts.mirror;
if (!mirror) {
- largestTextWidth += this.options.ticks.padding;
+ largestTextWidth += me.options.ticks.padding;
} else {
// If mirrored text is on the inside so don't expand
largestTextWidth = 0;
minSize.width += largestTextWidth;
} else {
// Expand to max size
- minSize.width = this.maxWidth;
+ minSize.width = me.maxWidth;
}
- this.paddingTop = tickFontSize / 2;
- this.paddingBottom = tickFontSize / 2;
+ me.paddingTop = tickFontSize / 2;
+ me.paddingBottom = tickFontSize / 2;
}
}
- if (this.margins) {
- this.paddingLeft = Math.max(this.paddingLeft - this.margins.left, 0);
- this.paddingTop = Math.max(this.paddingTop - this.margins.top, 0);
- this.paddingRight = Math.max(this.paddingRight - this.margins.right, 0);
- this.paddingBottom = Math.max(this.paddingBottom - this.margins.bottom, 0);
+ if (me.margins) {
+ me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
+ me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
+ me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
+ me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
}
- this.width = minSize.width;
- this.height = minSize.height;
+ me.width = minSize.width;
+ me.height = minSize.height;
},
afterFit: function() {
// Used for tick location, should
getPixelForTick: function(index, includeOffset) {
- if (this.isHorizontal()) {
- var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
- var tickWidth = innerWidth / Math.max((this.ticks.length - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
- var pixel = (tickWidth * index) + this.paddingLeft;
+ var me = this;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var tickWidth = innerWidth / Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ var pixel = (tickWidth * index) + me.paddingLeft;
if (includeOffset) {
pixel += tickWidth / 2;
}
- var finalVal = this.left + Math.round(pixel);
- finalVal += this.isFullWidth() ? this.margins.left : 0;
+ var finalVal = me.left + Math.round(pixel);
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
return finalVal;
} else {
- var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
- return this.top + (index * (innerHeight / (this.ticks.length - 1)));
+ var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
+ return me.top + (index * (innerHeight / (me.ticks.length - 1)));
}
},
// Utility for getting the pixel location of a percentage of scale
getPixelForDecimal: function(decimal /*, includeOffset*/ ) {
- if (this.isHorizontal()) {
- var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
- var valueOffset = (innerWidth * decimal) + this.paddingLeft;
+ var me = this;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var valueOffset = (innerWidth * decimal) + me.paddingLeft;
- var finalVal = this.left + Math.round(valueOffset);
- finalVal += this.isFullWidth() ? this.margins.left : 0;
+ var finalVal = me.left + Math.round(valueOffset);
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
return finalVal;
} else {
- return this.top + (decimal * this.height);
+ return me.top + (decimal * me.height);
}
},
// Actualy draw the scale on the canvas
// @param {rectangle} chartArea : the area of the chart to draw full grid lines on
draw: function(chartArea) {
- var options = this.options;
+ var me = this;
+ var options = me.options;
if (!options.display) {
return;
}
- var context = this.ctx;
+ var context = me.ctx;
var globalDefaults = Chart.defaults.global;
var optionTicks = options.ticks;
var gridLines = options.gridLines;
var scaleLabel = options.scaleLabel;
var setContextLineSettings;
- var isRotated = this.labelRotation !== 0;
+ var isRotated = me.labelRotation !== 0;
var skipRatio;
var scaleLabelX;
var scaleLabelY;
var scaleLabelFontFamily = helpers.getValueOrDefault(scaleLabel.fontFamily, globalDefaults.defaultFontFamily);
var scaleLabelFont = helpers.fontString(scaleLabelFontSize, scaleLabelFontStyle, scaleLabelFontFamily);
- var labelRotationRadians = helpers.toRadians(this.labelRotation);
+ var labelRotationRadians = helpers.toRadians(me.labelRotation);
var cosRotation = Math.cos(labelRotationRadians);
var sinRotation = Math.sin(labelRotationRadians);
- var longestRotatedLabel = this.longestLabelWidth * cosRotation;
+ var longestRotatedLabel = me.longestLabelWidth * cosRotation;
var rotatedLabelHeight = tickFontSize * sinRotation;
// Make sure we draw text in the correct color and font
context.fillStyle = tickFontColor;
- if (this.isHorizontal()) {
+ if (me.isHorizontal()) {
setContextLineSettings = true;
- var yTickStart = options.position === "bottom" ? this.top : this.bottom - tl;
- var yTickEnd = options.position === "bottom" ? this.top + tl : this.bottom;
+ var yTickStart = options.position === "bottom" ? me.top : me.bottom - tl;
+ var yTickEnd = options.position === "bottom" ? me.top + tl : me.bottom;
skipRatio = false;
// Only calculate the skip ratio with the half width of longestRotateLabel if we got an actual rotation
longestRotatedLabel /= 2;
}
- if ((longestRotatedLabel + optionTicks.autoSkipPadding) * this.ticks.length > (this.width - (this.paddingLeft + this.paddingRight))) {
- skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * this.ticks.length) / (this.width - (this.paddingLeft + this.paddingRight)));
+ if ((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length > (me.width - (me.paddingLeft + me.paddingRight))) {
+ skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length) / (me.width - (me.paddingLeft + me.paddingRight)));
}
// if they defined a max number of optionTicks,
// increase skipRatio until that number is met
- if (maxTicks && this.ticks.length > maxTicks) {
- while (!skipRatio || this.ticks.length / (skipRatio || 1) > maxTicks) {
+ if (maxTicks && me.ticks.length > maxTicks) {
+ while (!skipRatio || me.ticks.length / (skipRatio || 1) > maxTicks) {
if (!skipRatio) {
skipRatio = 1;
}
skipRatio = false;
}
- helpers.each(this.ticks, function (label, index) {
+ helpers.each(me.ticks, function (label, index) {
// Blank optionTicks
- var isLastTick = this.ticks.length === index + 1;
+ var isLastTick = me.ticks.length === index + 1;
// Since we always show the last tick,we need may need to hide the last shown one before
- var shouldSkip = (skipRatio > 1 && index % skipRatio > 0) || (index % skipRatio === 0 && index + skipRatio >= this.ticks.length);
+ var shouldSkip = (skipRatio > 1 && index % skipRatio > 0) || (index % skipRatio === 0 && index + skipRatio >= me.ticks.length);
if (shouldSkip && !isLastTick || (label === undefined || label === null)) {
return;
}
- var xLineValue = this.getPixelForTick(index); // xvalues for grid lines
- var xLabelValue = this.getPixelForTick(index, gridLines.offsetGridLines); // x values for optionTicks (need to consider offsetLabel option)
+ var xLineValue = me.getPixelForTick(index); // xvalues for grid lines
+ var xLabelValue = me.getPixelForTick(index, gridLines.offsetGridLines); // x values for optionTicks (need to consider offsetLabel option)
if (gridLines.display) {
- if (index === (typeof this.zeroLineIndex !== 'undefined' ? this.zeroLineIndex : 0)) {
+ if (index === (typeof me.zeroLineIndex !== 'undefined' ? me.zeroLineIndex : 0)) {
// Draw the first index specially
context.lineWidth = gridLines.zeroLineWidth;
context.strokeStyle = gridLines.zeroLineColor;
if (optionTicks.display) {
context.save();
- context.translate(xLabelValue + optionTicks.labelOffset, (isRotated) ? this.top + 12 : options.position === "top" ? this.bottom - tl : this.top + tl);
+ context.translate(xLabelValue + optionTicks.labelOffset, (isRotated) ? me.top + 12 : options.position === "top" ? me.bottom - tl : me.top + tl);
context.rotate(labelRotationRadians * -1);
context.font = tickLabelFont;
context.textAlign = (isRotated) ? "right" : "center";
context.fillText(label, 0, 0);
context.restore();
}
- }, this);
+ }, me);
if (scaleLabel.display) {
// Draw the scale label
context.fillStyle = scaleLabelFontColor; // render in correct colour
context.font = scaleLabelFont;
- scaleLabelX = this.left + ((this.right - this.left) / 2); // midpoint of the width
- scaleLabelY = options.position === 'bottom' ? this.bottom - (scaleLabelFontSize / 2) : this.top + (scaleLabelFontSize / 2);
+ scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
+ scaleLabelY = options.position === 'bottom' ? me.bottom - (scaleLabelFontSize / 2) : me.top + (scaleLabelFontSize / 2);
context.fillText(scaleLabel.labelString, scaleLabelX, scaleLabelY);
}
} else {
setContextLineSettings = true;
- var xTickStart = options.position === "right" ? this.left : this.right - 5;
- var xTickEnd = options.position === "right" ? this.left + 5 : this.right;
+ var xTickStart = options.position === "right" ? me.left : me.right - 5;
+ var xTickEnd = options.position === "right" ? me.left + 5 : me.right;
- helpers.each(this.ticks, function (label, index) {
+ helpers.each(me.ticks, function (label, index) {
// If the callback returned a null or undefined value, do not draw this line
if (label === undefined || label === null) {
return;
}
- var yLineValue = this.getPixelForTick(index); // xvalues for grid lines
+ var yLineValue = me.getPixelForTick(index); // xvalues for grid lines
if (gridLines.display) {
- if (index === (typeof this.zeroLineIndex !== 'undefined' ? this.zeroLineIndex : 0)) {
+ if (index === (typeof me.zeroLineIndex !== 'undefined' ? me.zeroLineIndex : 0)) {
// Draw the first index specially
context.lineWidth = gridLines.zeroLineWidth;
context.strokeStyle = gridLines.zeroLineColor;
if (optionTicks.display) {
var xLabelValue;
- var yLabelValue = this.getPixelForTick(index, gridLines.offsetGridLines); // x values for optionTicks (need to consider offsetLabel option)
+ var yLabelValue = me.getPixelForTick(index, gridLines.offsetGridLines); // x values for optionTicks (need to consider offsetLabel option)
context.save();
if (options.position === "left") {
if (optionTicks.mirror) {
- xLabelValue = this.right + optionTicks.padding;
+ xLabelValue = me.right + optionTicks.padding;
context.textAlign = "left";
} else {
- xLabelValue = this.right - optionTicks.padding;
+ xLabelValue = me.right - optionTicks.padding;
context.textAlign = "right";
}
} else {
// right side
if (optionTicks.mirror) {
- xLabelValue = this.left - optionTicks.padding;
+ xLabelValue = me.left - optionTicks.padding;
context.textAlign = "right";
} else {
- xLabelValue = this.left + optionTicks.padding;
+ xLabelValue = me.left + optionTicks.padding;
context.textAlign = "left";
}
}
context.fillText(label, 0, 0);
context.restore();
}
- }, this);
+ }, me);
if (scaleLabel.display) {
// Draw the scale label
- scaleLabelX = options.position === 'left' ? this.left + (scaleLabelFontSize / 2) : this.right - (scaleLabelFontSize / 2);
- scaleLabelY = this.top + ((this.bottom - this.top) / 2);
+ scaleLabelX = options.position === 'left' ? me.left + (scaleLabelFontSize / 2) : me.right - (scaleLabelFontSize / 2);
+ scaleLabelY = me.top + ((me.bottom - me.top) / 2);
var rotation = options.position === 'left' ? -0.5 * Math.PI : 0.5 * Math.PI;
context.save();
// Draw the line at the edge of the axis
context.lineWidth = gridLines.lineWidth;
context.strokeStyle = gridLines.color;
- var x1 = this.left,
- x2 = this.right,
- y1 = this.top,
- y2 = this.bottom;
+ var x1 = me.left,
+ x2 = me.right,
+ y1 = me.top,
+ y2 = me.bottom;
var aliasPixel = helpers.aliasPixel(context.lineWidth);
- if (this.isHorizontal()) {
- y1 = y2 = options.position === 'top' ? this.bottom : this.top;
+ if (me.isHorizontal()) {
+ y1 = y2 = options.position === 'top' ? me.bottom : me.top;
y1 += aliasPixel;
y2 += aliasPixel;
} else {
- x1 = x2 = options.position === 'left' ? this.right : this.left;
+ x1 = x2 = options.position === 'left' ? me.right : me.left;
x1 += aliasPixel;
x2 += aliasPixel;
}
Chart.Title = Chart.Element.extend({
initialize: function(config) {
- helpers.extend(this, config);
- this.options = helpers.configMerge(Chart.defaults.global.title, config.options);
+ var me = this;
+ helpers.extend(me, config);
+ me.options = helpers.configMerge(Chart.defaults.global.title, config.options);
// Contains hit boxes for each dataset (in dataset order)
- this.legendHitBoxes = [];
+ me.legendHitBoxes = [];
},
// These methods are ordered by lifecyle. Utilities then follow.
- beforeUpdate: noop,
+ beforeUpdate: function () {
+ var chartOpts = this.chart.options;
+ if (chartOpts && chartOpts.title) {
+ this.options = helpers.configMerge(Chart.defaults.global.title, chartOpts.title);
+ }
+ },
update: function(maxWidth, maxHeight, margins) {
-
+ var me = this;
+
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
- this.beforeUpdate();
+ me.beforeUpdate();
// Absorb the master measurements
- this.maxWidth = maxWidth;
- this.maxHeight = maxHeight;
- this.margins = margins;
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
// Dimensions
- this.beforeSetDimensions();
- this.setDimensions();
- this.afterSetDimensions();
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
// Labels
- this.beforeBuildLabels();
- this.buildLabels();
- this.afterBuildLabels();
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
// Fit
- this.beforeFit();
- this.fit();
- this.afterFit();
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
//
- this.afterUpdate();
+ me.afterUpdate();
- return this.minSize;
+ return me.minSize;
},
afterUpdate: noop,
beforeSetDimensions: noop,
setDimensions: function() {
+ var me = this;
// Set the unconstrained dimension before label rotation
- if (this.isHorizontal()) {
+ if (me.isHorizontal()) {
// Reset position before calculating rotation
- this.width = this.maxWidth;
- this.left = 0;
- this.right = this.width;
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
} else {
- this.height = this.maxHeight;
+ me.height = me.maxHeight;
// Reset position before calculating rotation
- this.top = 0;
- this.bottom = this.height;
+ me.top = 0;
+ me.bottom = me.height;
}
// Reset padding
- this.paddingLeft = 0;
- this.paddingTop = 0;
- this.paddingRight = 0;
- this.paddingBottom = 0;
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
// Reset minSize
- this.minSize = {
+ me.minSize = {
width: 0,
height: 0
};
beforeFit: noop,
fit: function() {
- var _this = this,
- ctx = _this.ctx,
+ var me = this,
+ ctx = me.ctx,
valueOrDefault = helpers.getValueOrDefault,
- opts = _this.options,
+ opts = me.options,
globalDefaults = Chart.defaults.global,
display = opts.display,
fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
- minSize = _this.minSize;
+ minSize = me.minSize;
- if (_this.isHorizontal()) {
- minSize.width = _this.maxWidth; // fill all the width
+ if (me.isHorizontal()) {
+ minSize.width = me.maxWidth; // fill all the width
minSize.height = display ? fontSize + (opts.padding * 2) : 0;
} else {
minSize.width = display ? fontSize + (opts.padding * 2) : 0;
- minSize.height = _this.maxHeight; // fill all the height
+ minSize.height = me.maxHeight; // fill all the height
}
- _this.width = minSize.width;
- _this.height = minSize.height;
+ me.width = minSize.width;
+ me.height = minSize.height;
},
afterFit: noop,
// Actualy draw the title block on the canvas
draw: function() {
- var _this = this,
- ctx = _this.ctx,
+ var me = this,
+ ctx = me.ctx,
valueOrDefault = helpers.getValueOrDefault,
- opts = _this.options,
+ opts = me.options,
globalDefaults = Chart.defaults.global;
if (opts.display) {
rotation = 0,
titleX,
titleY,
- top = _this.top,
- left = _this.left,
- bottom = _this.bottom,
- right = _this.right;
+ top = me.top,
+ left = me.left,
+ bottom = me.bottom,
+ right = me.right;
ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
ctx.font = titleFont;
// Horizontal
- if (_this.isHorizontal()) {
+ if (me.isHorizontal()) {
titleX = left + ((right - left) / 2); // midpoint of the width
titleY = top + ((bottom - top) / 2); // midpoint of the height
} else {
}
}
});
-};
\ No newline at end of file
+};
// Args are: (tooltipItem, data)
getBeforeBody: function() {
- var me = this;
- var lines = me._options.callbacks.beforeBody.apply(me, arguments);
+ var lines = this._options.callbacks.beforeBody.apply(this, arguments);
return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
},
// Args are: (tooltipItem, data)
getAfterBody: function() {
- var me = this;
- var lines = me._options.callbacks.afterBody.apply(me, arguments);
+ var lines = this._options.callbacks.afterBody.apply(this, arguments);
return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
},
return me;
},
getTooltipSize: function getTooltipSize(vm) {
- var me = this;
- var ctx = me._chart.ctx;
+ var ctx = this._chart.ctx;
var size = {
height: vm.yPadding * 2, // Tooltip Padding
return pt;
},
drawCaret: function drawCaret(tooltipPoint, size, opacity, caretPadding) {
- var me = this;
- var vm = me._view;
- var ctx = me._chart.ctx;
+ var vm = this._view;
+ var ctx = this._chart.ctx;
var x1, x2, x3;
var y1, y2, y3;
var caretSize = vm.caretSize;
}
},
drawBody: function drawBody(pt, vm, ctx, opacity) {
- var me = this;
var bodyFontSize = vm.bodyFontSize;
var bodySpacing = vm.bodySpacing;
var body = vm.body;
Chart.elements.Line = Chart.Element.extend({
lineToNextPoint: function(previousPoint, point, nextPoint, skipHandler, previousSkipHandler) {
- var ctx = this._chart.ctx;
+ var me = this;
+ var ctx = me._chart.ctx;
if (point._view.skip) {
- skipHandler.call(this, previousPoint, point, nextPoint);
+ skipHandler.call(me, previousPoint, point, nextPoint);
} else if (previousPoint._view.skip) {
- previousSkipHandler.call(this, previousPoint, point, nextPoint);
+ previousSkipHandler.call(me, previousPoint, point, nextPoint);
} else if (point._view.tension === 0) {
ctx.lineTo(point._view.x, point._view.y);
} else {
},
draw: function() {
- var _this = this;
+ var me = this;
- var vm = this._view;
- var ctx = this._chart.ctx;
- var first = this._children[0];
- var last = this._children[this._children.length - 1];
+ var vm = me._view;
+ var ctx = me._chart.ctx;
+ var first = me._children[0];
+ var last = me._children[me._children.length - 1];
function loopBackToStart(drawLineToCenter) {
if (!first._view.skip && !last._view.skip) {
);
} else if (drawLineToCenter) {
// Go to center
- ctx.lineTo(_this._view.scaleZero.x, _this._view.scaleZero.y);
+ ctx.lineTo(me._view.scaleZero.x, me._view.scaleZero.y);
}
}
ctx.save();
// If we had points and want to fill this line, do so.
- if (this._children.length > 0 && vm.fill) {
+ if (me._children.length > 0 && vm.fill) {
// Draw the background first (so the border is always on top)
ctx.beginPath();
- helpers.each(this._children, function(point, index) {
- var previous = helpers.previousItem(this._children, index);
- var next = helpers.nextItem(this._children, index);
+ helpers.each(me._children, function(point, index) {
+ var previous = helpers.previousItem(me._children, index);
+ var next = helpers.nextItem(me._children, index);
// First point moves to it's starting position no matter what
if (index === 0) {
- if (this._loop) {
+ if (me._loop) {
ctx.moveTo(vm.scaleZero.x, vm.scaleZero.y);
} else {
ctx.moveTo(point._view.x, vm.scaleZero);
}
if (point._view.skip) {
- if (!this._loop) {
- ctx.moveTo(next._view.x, this._view.scaleZero);
+ if (!me._loop) {
+ ctx.moveTo(next._view.x, me._view.scaleZero);
}
} else {
ctx.lineTo(point._view.x, point._view.y);
}
} else {
- this.lineToNextPoint(previous, point, next, function(previousPoint, point, nextPoint) {
- if (this._loop) {
+ me.lineToNextPoint(previous, point, next, function(previousPoint, point, nextPoint) {
+ if (me._loop) {
// Go to center
- ctx.lineTo(this._view.scaleZero.x, this._view.scaleZero.y);
+ ctx.lineTo(me._view.scaleZero.x, me._view.scaleZero.y);
} else {
- ctx.lineTo(previousPoint._view.x, this._view.scaleZero);
- ctx.moveTo(nextPoint._view.x, this._view.scaleZero);
+ ctx.lineTo(previousPoint._view.x, me._view.scaleZero);
+ ctx.moveTo(nextPoint._view.x, me._view.scaleZero);
}
}, function(previousPoint, point) {
// If we skipped the last point, draw a line to ourselves so that the fill is nice
ctx.lineTo(point._view.x, point._view.y);
});
}
- }, this);
+ }, me);
// For radial scales, loop back around to the first point
- if (this._loop) {
+ if (me._loop) {
loopBackToStart(true);
} else {
//Round off the line by going to the base of the chart, back to the start, then fill.
- ctx.lineTo(this._children[this._children.length - 1]._view.x, vm.scaleZero);
- ctx.lineTo(this._children[0]._view.x, vm.scaleZero);
+ ctx.lineTo(me._children[me._children.length - 1]._view.x, vm.scaleZero);
+ ctx.lineTo(me._children[0]._view.x, vm.scaleZero);
}
ctx.fillStyle = vm.backgroundColor || globalDefaults.defaultColor;
ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
ctx.beginPath();
- helpers.each(this._children, function(point, index) {
- var previous = helpers.previousItem(this._children, index);
- var next = helpers.nextItem(this._children, index);
+ helpers.each(me._children, function(point, index) {
+ var previous = helpers.previousItem(me._children, index);
+ var next = helpers.nextItem(me._children, index);
if (index === 0) {
ctx.moveTo(point._view.x, point._view.y);
} else {
- this.lineToNextPoint(previous, point, next, function(previousPoint, point, nextPoint) {
+ me.lineToNextPoint(previous, point, next, function(previousPoint, point, nextPoint) {
ctx.moveTo(nextPoint._view.x, nextPoint._view.y);
}, function(previousPoint, point) {
// If we skipped the last point, move up to our point preventing a line from being drawn
ctx.moveTo(point._view.x, point._view.y);
});
}
- }, this);
+ }, me);
- if (this._loop && this._children.length > 0) {
+ if (me._loop && me._children.length > 0) {
loopBackToStart();
}
var DatasetScale = Chart.Scale.extend({
// Implement this so that
determineDataLimits: function() {
- this.minIndex = 0;
- this.maxIndex = this.chart.data.labels.length - 1;
+ var me = this;
+ me.minIndex = 0;
+ me.maxIndex = me.chart.data.labels.length - 1;
var findIndex;
- if (this.options.ticks.min !== undefined) {
+ if (me.options.ticks.min !== undefined) {
// user specified min value
- findIndex = helpers.indexOf(this.chart.data.labels, this.options.ticks.min);
- this.minIndex = findIndex !== -1 ? findIndex : this.minIndex;
+ findIndex = helpers.indexOf(me.chart.data.labels, me.options.ticks.min);
+ me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
}
- if (this.options.ticks.max !== undefined) {
+ if (me.options.ticks.max !== undefined) {
// user specified max value
- findIndex = helpers.indexOf(this.chart.data.labels, this.options.ticks.max);
- this.maxIndex = findIndex !== -1 ? findIndex : this.maxIndex;
+ findIndex = helpers.indexOf(me.chart.data.labels, me.options.ticks.max);
+ me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
}
- this.min = this.chart.data.labels[this.minIndex];
- this.max = this.chart.data.labels[this.maxIndex];
+ me.min = me.chart.data.labels[me.minIndex];
+ me.max = me.chart.data.labels[me.maxIndex];
},
buildTicks: function(index) {
+ var me = this;
// If we are viewing some subset of labels, slice the original array
- this.ticks = (this.minIndex === 0 && this.maxIndex === this.chart.data.labels.length - 1) ? this.chart.data.labels : this.chart.data.labels.slice(this.minIndex, this.maxIndex + 1);
+ me.ticks = (me.minIndex === 0 && me.maxIndex === me.chart.data.labels.length - 1) ? me.chart.data.labels : me.chart.data.labels.slice(me.minIndex, me.maxIndex + 1);
},
getLabelForIndex: function(index, datasetIndex) {
// Used to get data value locations. Value can either be an index or a numerical value
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
+ var me = this;
// 1 is added because we need the length but we have the indexes
- var offsetAmt = Math.max((this.maxIndex + 1 - this.minIndex - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
- if (this.isHorizontal()) {
- var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
var valueWidth = innerWidth / offsetAmt;
- var widthOffset = (valueWidth * (index - this.minIndex)) + this.paddingLeft;
+ var widthOffset = (valueWidth * (index - me.minIndex)) + me.paddingLeft;
- if (this.options.gridLines.offsetGridLines && includeOffset) {
+ if (me.options.gridLines.offsetGridLines && includeOffset) {
widthOffset += (valueWidth / 2);
}
- return this.left + Math.round(widthOffset);
+ return me.left + Math.round(widthOffset);
} else {
- var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
+ var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
var valueHeight = innerHeight / offsetAmt;
- var heightOffset = (valueHeight * (index - this.minIndex)) + this.paddingTop;
+ var heightOffset = (valueHeight * (index - me.minIndex)) + me.paddingTop;
- if (this.options.gridLines.offsetGridLines && includeOffset) {
+ if (me.options.gridLines.offsetGridLines && includeOffset) {
heightOffset += (valueHeight / 2);
}
- return this.top + Math.round(heightOffset);
+ return me.top + Math.round(heightOffset);
}
},
getPixelForTick: function(index, includeOffset) {
return this.getPixelForValue(this.ticks[index], index + this.minIndex, null, includeOffset);
},
getValueForPixel: function(pixel) {
- var value
-; var offsetAmt = Math.max((this.ticks.length - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
- var horz = this.isHorizontal();
- var innerDimension = horz ? this.width - (this.paddingLeft + this.paddingRight) : this.height - (this.paddingTop + this.paddingBottom);
+ var me = this;
+ var value;
+ var offsetAmt = Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ var horz = me.isHorizontal();
+ var innerDimension = horz ? me.width - (me.paddingLeft + me.paddingRight) : me.height - (me.paddingTop + me.paddingBottom);
var valueDimension = innerDimension / offsetAmt;
- if (this.options.gridLines.offsetGridLines) {
+ if (me.options.gridLines.offsetGridLines) {
pixel -= (valueDimension / 2);
}
- pixel -= horz ? this.paddingLeft : this.paddingTop;
+ pixel -= horz ? me.paddingLeft : me.paddingTop;
if (pixel <= 0) {
value = 0;
var LinearScale = Chart.LinearScaleBase.extend({
determineDataLimits: function() {
- var _this = this;
- var opts = _this.options;
+ var me = this;
+ var opts = me.options;
var tickOpts = opts.ticks;
- var chart = _this.chart;
+ var chart = me.chart;
var data = chart.data;
var datasets = data.datasets;
- var isHorizontal = _this.isHorizontal();
+ var isHorizontal = me.isHorizontal();
function IDMatches(meta) {
- return isHorizontal ? meta.xAxisID === _this.id : meta.yAxisID === _this.id;
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
}
// First Calculate the range
- _this.min = null;
- _this.max = null;
+ me.min = null;
+ me.max = null;
if (opts.stacked) {
var valuesPerType = {};
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
helpers.each(dataset.data, function(rawValue, index) {
- var value = +_this.getRightValue(rawValue);
+ var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
var minVal = helpers.min(values);
var maxVal = helpers.max(values);
- _this.min = _this.min === null ? minVal : Math.min(_this.min, minVal);
- _this.max = _this.max === null ? maxVal : Math.max(_this.max, maxVal);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
});
} else {
var meta = chart.getDatasetMeta(datasetIndex);
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
helpers.each(dataset.data, function(rawValue, index) {
- var value = +_this.getRightValue(rawValue);
+ var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
- if (_this.min === null) {
- _this.min = value;
- } else if (value < _this.min) {
- _this.min = value;
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
}
- if (_this.max === null) {
- _this.max = value;
- } else if (value > _this.max) {
- _this.max = value;
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
}
});
}
},
// Called after the ticks are built. We need
handleDirectionalChanges: function() {
- var me = this;
- if (!me.isHorizontal()) {
+ if (!this.isHorizontal()) {
// We are in a vertical orientation. The top value is the highest. So reverse the array
- me.ticks.reverse();
+ this.ticks.reverse();
}
},
getLabelForIndex: function(index, datasetIndex) {
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
// This must be called after fit has been run so that
// this.left, this.top, this.right, and this.bottom have been defined
- var _this = this;
- var paddingLeft = _this.paddingLeft;
- var paddingBottom = _this.paddingBottom;
- var start = _this.start;
+ var me = this;
+ var paddingLeft = me.paddingLeft;
+ var paddingBottom = me.paddingBottom;
+ var start = me.start;
- var rightValue = +_this.getRightValue(value);
+ var rightValue = +me.getRightValue(value);
var pixel;
var innerDimension;
- var range = _this.end - start;
+ var range = me.end - start;
- if (_this.isHorizontal()) {
- innerDimension = _this.width - (paddingLeft + _this.paddingRight);
- pixel = _this.left + (innerDimension / range * (rightValue - start));
+ if (me.isHorizontal()) {
+ innerDimension = me.width - (paddingLeft + me.paddingRight);
+ pixel = me.left + (innerDimension / range * (rightValue - start));
return Math.round(pixel + paddingLeft);
} else {
- innerDimension = _this.height - (_this.paddingTop + paddingBottom);
- pixel = (_this.bottom - paddingBottom) - (innerDimension / range * (rightValue - start));
+ innerDimension = me.height - (me.paddingTop + paddingBottom);
+ pixel = (me.bottom - paddingBottom) - (innerDimension / range * (rightValue - start));
return Math.round(pixel);
}
},
getValueForPixel: function(pixel) {
- var _this = this;
- var isHorizontal = _this.isHorizontal();
- var paddingLeft = _this.paddingLeft;
- var paddingBottom = _this.paddingBottom;
- var innerDimension = isHorizontal ? _this.width - (paddingLeft + _this.paddingRight) : _this.height - (_this.paddingTop + paddingBottom);
- var offset = (isHorizontal ? pixel - _this.left - paddingLeft : _this.bottom - paddingBottom - pixel) / innerDimension;
- return _this.start + ((_this.end - _this.start) * offset);
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var paddingLeft = me.paddingLeft;
+ var paddingBottom = me.paddingBottom;
+ var innerDimension = isHorizontal ? me.width - (paddingLeft + me.paddingRight) : me.height - (me.paddingTop + paddingBottom);
+ var offset = (isHorizontal ? pixel - me.left - paddingLeft : me.bottom - paddingBottom - pixel) / innerDimension;
+ return me.start + ((me.end - me.start) * offset);
},
getPixelForTick: function(index, includeOffset) {
return this.getPixelForValue(this.ticksAsNumbers[index], null, null, includeOffset);
Chart.LinearScaleBase = Chart.Scale.extend({
handleTickRangeOptions: function() {
- var _this = this;
- var opts = _this.options;
+ var me = this;
+ var opts = me.options;
var tickOpts = opts.ticks;
// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
// do nothing since that would make the chart weird. If the user really wants a weird chart
// axis, they can manually override it
if (tickOpts.beginAtZero) {
- var minSign = helpers.sign(_this.min);
- var maxSign = helpers.sign(_this.max);
+ var minSign = helpers.sign(me.min);
+ var maxSign = helpers.sign(me.max);
if (minSign < 0 && maxSign < 0) {
// move the top up to 0
- _this.max = 0;
+ me.max = 0;
} else if (minSign > 0 && maxSign > 0) {
// move the botttom down to 0
- _this.min = 0;
+ me.min = 0;
}
}
if (tickOpts.min !== undefined) {
- _this.min = tickOpts.min;
+ me.min = tickOpts.min;
} else if (tickOpts.suggestedMin !== undefined) {
- _this.min = Math.min(_this.min, tickOpts.suggestedMin);
+ me.min = Math.min(me.min, tickOpts.suggestedMin);
}
if (tickOpts.max !== undefined) {
- _this.max = tickOpts.max;
+ me.max = tickOpts.max;
} else if (tickOpts.suggestedMax !== undefined) {
- _this.max = Math.max(_this.max, tickOpts.suggestedMax);
+ me.max = Math.max(me.max, tickOpts.suggestedMax);
}
- if (_this.min === _this.max) {
- _this.max++;
+ if (me.min === me.max) {
+ me.max++;
if (!tickOpts.beginAtZero) {
- _this.min--;
+ me.min--;
}
}
},
handleDirectionalChanges: noop,
buildTicks: function() {
- var _this = this;
- var opts = _this.options;
+ var me = this;
+ var opts = me.options;
var tickOpts = opts.ticks;
var getValueOrDefault = helpers.getValueOrDefault;
- var isHorizontal = _this.isHorizontal();
+ var isHorizontal = me.isHorizontal();
- var ticks = _this.ticks = [];
+ var ticks = me.ticks = [];
// Figure out what the max number of ticks we can support it is based on the size of
// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
// the graph
- var maxTicks = this.getTickLimit();
+ var maxTicks = me.getTickLimit();
// Make sure we always have at least 2 ticks
maxTicks = Math.max(2, maxTicks);
if (fixedStepSizeSet) {
spacing = getValueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize);
} else {
- var niceRange = helpers.niceNum(_this.max - _this.min, false);
+ var niceRange = helpers.niceNum(me.max - me.min, false);
spacing = helpers.niceNum(niceRange / (maxTicks - 1), true);
}
- var niceMin = Math.floor(_this.min / spacing) * spacing;
- var niceMax = Math.ceil(_this.max / spacing) * spacing;
+ var niceMin = Math.floor(me.min / spacing) * spacing;
+ var niceMax = Math.ceil(me.max / spacing) * spacing;
var numSpaces = (niceMax - niceMin) / spacing;
// If very close to our rounded value, use it.
}
ticks.push(tickOpts.max !== undefined ? tickOpts.max : niceMax);
- this.handleDirectionalChanges();
+ me.handleDirectionalChanges();
// At this point, we need to update our max and min given the tick values since we have expanded the
// range of the scale
- _this.max = helpers.max(ticks);
- _this.min = helpers.min(ticks);
+ me.max = helpers.max(ticks);
+ me.min = helpers.min(ticks);
if (tickOpts.reverse) {
ticks.reverse();
- _this.start = _this.max;
- _this.end = _this.min;
+ me.start = me.max;
+ me.end = me.min;
} else {
- _this.start = _this.min;
- _this.end = _this.max;
+ me.start = me.min;
+ me.end = me.max;
}
},
convertTicksToLabels: function() {
- var _this = this;
- _this.ticksAsNumbers = _this.ticks.slice();
- _this.zeroLineIndex = _this.ticks.indexOf(0);
+ var me = this;
+ me.ticksAsNumbers = me.ticks.slice();
+ me.zeroLineIndex = me.ticks.indexOf(0);
- Chart.Scale.prototype.convertTicksToLabels.call(_this);
+ Chart.Scale.prototype.convertTicksToLabels.call(me);
},
});
};
\ No newline at end of file
var LogarithmicScale = Chart.Scale.extend({
determineDataLimits: function() {
- var _this = this;
- var opts = _this.options;
+ var me = this;
+ var opts = me.options;
var tickOpts = opts.ticks;
- var chart = _this.chart;
+ var chart = me.chart;
var data = chart.data;
var datasets = data.datasets;
var getValueOrDefault = helpers.getValueOrDefault;
- var isHorizontal = _this.isHorizontal();
+ var isHorizontal = me.isHorizontal();
function IDMatches(meta) {
- return isHorizontal ? meta.xAxisID === _this.id : meta.yAxisID === _this.id;
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
}
// Calculate Range
- _this.min = null;
- _this.max = null;
+ me.min = null;
+ me.max = null;
if (opts.stacked) {
var valuesPerType = {};
helpers.each(dataset.data, function(rawValue, index) {
var values = valuesPerType[meta.type];
- var value = +_this.getRightValue(rawValue);
+ var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
helpers.each(valuesPerType, function(valuesForType) {
var minVal = helpers.min(valuesForType);
var maxVal = helpers.max(valuesForType);
- _this.min = _this.min === null ? minVal : Math.min(_this.min, minVal);
- _this.max = _this.max === null ? maxVal : Math.max(_this.max, maxVal);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
});
} else {
var meta = chart.getDatasetMeta(datasetIndex);
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
helpers.each(dataset.data, function(rawValue, index) {
- var value = +_this.getRightValue(rawValue);
+ var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
- if (_this.min === null) {
- _this.min = value;
- } else if (value < _this.min) {
- _this.min = value;
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
}
- if (_this.max === null) {
- _this.max = value;
- } else if (value > _this.max) {
- _this.max = value;
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
}
});
}
});
}
- _this.min = getValueOrDefault(tickOpts.min, _this.min);
- _this.max = getValueOrDefault(tickOpts.max, _this.max);
+ me.min = getValueOrDefault(tickOpts.min, me.min);
+ me.max = getValueOrDefault(tickOpts.max, me.max);
- if (_this.min === _this.max) {
- if (_this.min !== 0 && _this.min !== null) {
- _this.min = Math.pow(10, Math.floor(helpers.log10(_this.min)) - 1);
- _this.max = Math.pow(10, Math.floor(helpers.log10(_this.max)) + 1);
+ if (me.min === me.max) {
+ if (me.min !== 0 && me.min !== null) {
+ me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
+ me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
} else {
- _this.min = 1;
- _this.max = 10;
+ me.min = 1;
+ me.max = 10;
}
}
},
buildTicks: function() {
- var _this = this;
- var opts = _this.options;
+ var me = this;
+ var opts = me.options;
var tickOpts = opts.ticks;
var getValueOrDefault = helpers.getValueOrDefault;
// Reset the ticks array. Later on, we will draw a grid line at these positions
// The array simply contains the numerical value of the spots where ticks will be
- var ticks = _this.ticks = [];
+ var ticks = me.ticks = [];
// Figure out what the max number of ticks we can support it is based on the size of
// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
// the graph
- var tickVal = getValueOrDefault(tickOpts.min, Math.pow(10, Math.floor(helpers.log10(_this.min))));
+ var tickVal = getValueOrDefault(tickOpts.min, Math.pow(10, Math.floor(helpers.log10(me.min))));
- while (tickVal < _this.max) {
+ while (tickVal < me.max) {
ticks.push(tickVal);
var exp = Math.floor(helpers.log10(tickVal));
var lastTick = getValueOrDefault(tickOpts.max, tickVal);
ticks.push(lastTick);
- if (!_this.isHorizontal()) {
+ if (!me.isHorizontal()) {
// We are in a vertical orientation. The top value is the highest. So reverse the array
ticks.reverse();
}
// At this point, we need to update our max and min given the tick values since we have expanded the
// range of the scale
- _this.max = helpers.max(ticks);
- _this.min = helpers.min(ticks);
+ me.max = helpers.max(ticks);
+ me.min = helpers.min(ticks);
if (tickOpts.reverse) {
ticks.reverse();
- _this.start = _this.max;
- _this.end = _this.min;
+ me.start = me.max;
+ me.end = me.min;
} else {
- _this.start = _this.min;
- _this.end = _this.max;
+ me.start = me.min;
+ me.end = me.max;
}
},
convertTicksToLabels: function() {
return this.getPixelForValue(this.tickValues[index], null, null, includeOffset);
},
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
- var _this = this;
+ var me = this;
var innerDimension;
var pixel;
- var start = _this.start;
- var newVal = +_this.getRightValue(value);
- var range = helpers.log10(_this.end) - helpers.log10(start);
- var paddingTop = _this.paddingTop;
- var paddingBottom = _this.paddingBottom;
- var paddingLeft = _this.paddingLeft;
+ var start = me.start;
+ var newVal = +me.getRightValue(value);
+ var range = helpers.log10(me.end) - helpers.log10(start);
+ var paddingTop = me.paddingTop;
+ var paddingBottom = me.paddingBottom;
+ var paddingLeft = me.paddingLeft;
- if (_this.isHorizontal()) {
+ if (me.isHorizontal()) {
if (newVal === 0) {
- pixel = _this.left + paddingLeft;
+ pixel = me.left + paddingLeft;
} else {
- innerDimension = _this.width - (paddingLeft + _this.paddingRight);
- pixel = _this.left + (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
+ innerDimension = me.width - (paddingLeft + me.paddingRight);
+ pixel = me.left + (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
pixel += paddingLeft;
}
} else {
// Bottom - top since pixels increase downard on a screen
if (newVal === 0) {
- pixel = _this.top + paddingTop;
+ pixel = me.top + paddingTop;
} else {
- innerDimension = _this.height - (paddingTop + paddingBottom);
- pixel = (_this.bottom - paddingBottom) - (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
+ innerDimension = me.height - (paddingTop + paddingBottom);
+ pixel = (me.bottom - paddingBottom) - (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
}
}
return pixel;
},
getValueForPixel: function(pixel) {
- var _this = this;
+ var me = this;
var offset;
- var range = helpers.log10(_this.end) - helpers.log10(_this.start);
+ var range = helpers.log10(me.end) - helpers.log10(me.start);
var value;
var innerDimension;
- if (_this.isHorizontal()) {
- innerDimension = _this.width - (_this.paddingLeft + _this.paddingRight);
- value = _this.start * Math.pow(10, (pixel - _this.left - _this.paddingLeft) * range / innerDimension);
+ if (me.isHorizontal()) {
+ innerDimension = me.width - (me.paddingLeft + me.paddingRight);
+ value = me.start * Math.pow(10, (pixel - me.left - me.paddingLeft) * range / innerDimension);
} else {
- innerDimension = _this.height - (_this.paddingTop + _this.paddingBottom);
- value = Math.pow(10, (_this.bottom - _this.paddingBottom - pixel) * range / innerDimension) / _this.start;
+ innerDimension = me.height - (me.paddingTop + me.paddingBottom);
+ value = Math.pow(10, (me.bottom - me.paddingBottom - pixel) * range / innerDimension) / me.start;
}
return value;
me.handleTickRangeOptions();
},
getTickLimit: function() {
- var me = this;
- var tickOpts = me.options.ticks;
+ var tickOpts = this.options.ticks;
var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
- return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.drawingArea / (1.5 * tickFontSize)));
+ return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
},
convertTicksToLabels: function() {
var me = this;
return this.labelMoments[datasetIndex][index];
},
getMomentStartOf: function(tick) {
- if (this.options.time.unit === 'week' && this.options.time.isoWeekday !== false) {
- return tick.clone().startOf('isoWeek').isoWeekday(this.options.time.isoWeekday);
+ var me = this;
+ if (me.options.time.unit === 'week' && me.options.time.isoWeekday !== false) {
+ return tick.clone().startOf('isoWeek').isoWeekday(me.options.time.isoWeekday);
} else {
- return tick.clone().startOf(this.tickUnit);
+ return tick.clone().startOf(me.tickUnit);
}
},
determineDataLimits: function() {
- this.labelMoments = [];
+ var me = this;
+ me.labelMoments = [];
// Only parse these once. If the dataset does not have data as x,y pairs, we will use
// these
var scaleLabelMoments = [];
- if (this.chart.data.labels && this.chart.data.labels.length > 0) {
- helpers.each(this.chart.data.labels, function(label, index) {
- var labelMoment = this.parseTime(label);
+ if (me.chart.data.labels && me.chart.data.labels.length > 0) {
+ helpers.each(me.chart.data.labels, function(label, index) {
+ var labelMoment = me.parseTime(label);
if (labelMoment.isValid()) {
- if (this.options.time.round) {
- labelMoment.startOf(this.options.time.round);
+ if (me.options.time.round) {
+ labelMoment.startOf(me.options.time.round);
}
scaleLabelMoments.push(labelMoment);
}
- }, this);
+ }, me);
- this.firstTick = moment.min.call(this, scaleLabelMoments);
- this.lastTick = moment.max.call(this, scaleLabelMoments);
+ me.firstTick = moment.min.call(me, scaleLabelMoments);
+ me.lastTick = moment.max.call(me, scaleLabelMoments);
} else {
- this.firstTick = null;
- this.lastTick = null;
+ me.firstTick = null;
+ me.lastTick = null;
}
- helpers.each(this.chart.data.datasets, function(dataset, datasetIndex) {
+ helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
var momentsForDataset = [];
- var datasetVisible = this.chart.isDatasetVisible(datasetIndex);
+ var datasetVisible = me.chart.isDatasetVisible(datasetIndex);
if (typeof dataset.data[0] === 'object' && dataset.data[0] !== null) {
helpers.each(dataset.data, function(value, index) {
- var labelMoment = this.parseTime(this.getRightValue(value));
+ var labelMoment = me.parseTime(me.getRightValue(value));
if (labelMoment.isValid()) {
- if (this.options.time.round) {
- labelMoment.startOf(this.options.time.round);
+ if (me.options.time.round) {
+ labelMoment.startOf(me.options.time.round);
}
momentsForDataset.push(labelMoment);
if (datasetVisible) {
// May have gone outside the scale ranges, make sure we keep the first and last ticks updated
- this.firstTick = this.firstTick !== null ? moment.min(this.firstTick, labelMoment) : labelMoment;
- this.lastTick = this.lastTick !== null ? moment.max(this.lastTick, labelMoment) : labelMoment;
+ me.firstTick = me.firstTick !== null ? moment.min(me.firstTick, labelMoment) : labelMoment;
+ me.lastTick = me.lastTick !== null ? moment.max(me.lastTick, labelMoment) : labelMoment;
}
}
- }, this);
+ }, me);
} else {
// We have no labels. Use the ones from the scale
momentsForDataset = scaleLabelMoments;
}
- this.labelMoments.push(momentsForDataset);
- }, this);
+ me.labelMoments.push(momentsForDataset);
+ }, me);
// Set these after we've done all the data
- if (this.options.time.min) {
- this.firstTick = this.parseTime(this.options.time.min);
+ if (me.options.time.min) {
+ me.firstTick = me.parseTime(me.options.time.min);
}
- if (this.options.time.max) {
- this.lastTick = this.parseTime(this.options.time.max);
+ if (me.options.time.max) {
+ me.lastTick = me.parseTime(me.options.time.max);
}
// We will modify these, so clone for later
- this.firstTick = (this.firstTick || moment()).clone();
- this.lastTick = (this.lastTick || moment()).clone();
+ me.firstTick = (me.firstTick || moment()).clone();
+ me.lastTick = (me.lastTick || moment()).clone();
},
buildTicks: function(index) {
+ var me = this;
- this.ctx.save();
- var tickFontSize = helpers.getValueOrDefault(this.options.ticks.fontSize, Chart.defaults.global.defaultFontSize);
- var tickFontStyle = helpers.getValueOrDefault(this.options.ticks.fontStyle, Chart.defaults.global.defaultFontStyle);
- var tickFontFamily = helpers.getValueOrDefault(this.options.ticks.fontFamily, Chart.defaults.global.defaultFontFamily);
+ me.ctx.save();
+ var tickFontSize = helpers.getValueOrDefault(me.options.ticks.fontSize, Chart.defaults.global.defaultFontSize);
+ var tickFontStyle = helpers.getValueOrDefault(me.options.ticks.fontStyle, Chart.defaults.global.defaultFontStyle);
+ var tickFontFamily = helpers.getValueOrDefault(me.options.ticks.fontFamily, Chart.defaults.global.defaultFontFamily);
var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
- this.ctx.font = tickLabelFont;
+ me.ctx.font = tickLabelFont;
- this.ticks = [];
- this.unitScale = 1; // How much we scale the unit by, ie 2 means 2x unit per step
- this.scaleSizeInUnits = 0; // How large the scale is in the base unit (seconds, minutes, etc)
+ me.ticks = [];
+ me.unitScale = 1; // How much we scale the unit by, ie 2 means 2x unit per step
+ me.scaleSizeInUnits = 0; // How large the scale is in the base unit (seconds, minutes, etc)
// Set unit override if applicable
- if (this.options.time.unit) {
- this.tickUnit = this.options.time.unit || 'day';
- this.displayFormat = this.options.time.displayFormats[this.tickUnit];
- this.scaleSizeInUnits = this.lastTick.diff(this.firstTick, this.tickUnit, true);
- this.unitScale = helpers.getValueOrDefault(this.options.time.unitStepSize, 1);
+ if (me.options.time.unit) {
+ me.tickUnit = me.options.time.unit || 'day';
+ me.displayFormat = me.options.time.displayFormats[me.tickUnit];
+ me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
+ me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, 1);
} else {
// Determine the smallest needed unit of the time
- var innerWidth = this.isHorizontal() ? this.width - (this.paddingLeft + this.paddingRight) : this.height - (this.paddingTop + this.paddingBottom);
+ var innerWidth = me.isHorizontal() ? me.width - (me.paddingLeft + me.paddingRight) : me.height - (me.paddingTop + me.paddingBottom);
// Crude approximation of what the label length might be
- var tempFirstLabel = this.tickFormatFunction(this.firstTick, 0, []);
- var tickLabelWidth = this.ctx.measureText(tempFirstLabel).width;
- var cosRotation = Math.cos(helpers.toRadians(this.options.ticks.maxRotation));
- var sinRotation = Math.sin(helpers.toRadians(this.options.ticks.maxRotation));
+ var tempFirstLabel = me.tickFormatFunction(me.firstTick, 0, []);
+ var tickLabelWidth = me.ctx.measureText(tempFirstLabel).width;
+ var cosRotation = Math.cos(helpers.toRadians(me.options.ticks.maxRotation));
+ var sinRotation = Math.sin(helpers.toRadians(me.options.ticks.maxRotation));
tickLabelWidth = (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
var labelCapacity = innerWidth / (tickLabelWidth);
// Start as small as possible
- this.tickUnit = 'millisecond';
- this.scaleSizeInUnits = this.lastTick.diff(this.firstTick, this.tickUnit, true);
- this.displayFormat = this.options.time.displayFormats[this.tickUnit];
+ me.tickUnit = 'millisecond';
+ me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
+ me.displayFormat = me.options.time.displayFormats[me.tickUnit];
var unitDefinitionIndex = 0;
var unitDefinition = time.units[unitDefinitionIndex];
// While we aren't ideal and we don't have units left
while (unitDefinitionIndex < time.units.length) {
// Can we scale this unit. If `false` we can scale infinitely
- this.unitScale = 1;
+ me.unitScale = 1;
- if (helpers.isArray(unitDefinition.steps) && Math.ceil(this.scaleSizeInUnits / labelCapacity) < helpers.max(unitDefinition.steps)) {
+ if (helpers.isArray(unitDefinition.steps) && Math.ceil(me.scaleSizeInUnits / labelCapacity) < helpers.max(unitDefinition.steps)) {
// Use one of the prefedined steps
for (var idx = 0; idx < unitDefinition.steps.length; ++idx) {
- if (unitDefinition.steps[idx] >= Math.ceil(this.scaleSizeInUnits / labelCapacity)) {
- this.unitScale = helpers.getValueOrDefault(this.options.time.unitStepSize, unitDefinition.steps[idx]);
+ if (unitDefinition.steps[idx] >= Math.ceil(me.scaleSizeInUnits / labelCapacity)) {
+ me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, unitDefinition.steps[idx]);
break;
}
}
break;
- } else if ((unitDefinition.maxStep === false) || (Math.ceil(this.scaleSizeInUnits / labelCapacity) < unitDefinition.maxStep)) {
+ } else if ((unitDefinition.maxStep === false) || (Math.ceil(me.scaleSizeInUnits / labelCapacity) < unitDefinition.maxStep)) {
// We have a max step. Scale this unit
- this.unitScale = helpers.getValueOrDefault(this.options.time.unitStepSize, Math.ceil(this.scaleSizeInUnits / labelCapacity));
+ me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, Math.ceil(me.scaleSizeInUnits / labelCapacity));
break;
} else {
// Move to the next unit up
++unitDefinitionIndex;
unitDefinition = time.units[unitDefinitionIndex];
- this.tickUnit = unitDefinition.name;
- var leadingUnitBuffer = this.firstTick.diff(this.getMomentStartOf(this.firstTick), this.tickUnit, true);
- var trailingUnitBuffer = this.getMomentStartOf(this.lastTick.clone().add(1, this.tickUnit)).diff(this.lastTick, this.tickUnit, true);
- this.scaleSizeInUnits = this.lastTick.diff(this.firstTick, this.tickUnit, true) + leadingUnitBuffer + trailingUnitBuffer;
- this.displayFormat = this.options.time.displayFormats[unitDefinition.name];
+ me.tickUnit = unitDefinition.name;
+ var leadingUnitBuffer = me.firstTick.diff(me.getMomentStartOf(me.firstTick), me.tickUnit, true);
+ var trailingUnitBuffer = me.getMomentStartOf(me.lastTick.clone().add(1, me.tickUnit)).diff(me.lastTick, me.tickUnit, true);
+ me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true) + leadingUnitBuffer + trailingUnitBuffer;
+ me.displayFormat = me.options.time.displayFormats[unitDefinition.name];
}
}
}
var roundedStart;
// Only round the first tick if we have no hard minimum
- if (!this.options.time.min) {
- this.firstTick = this.getMomentStartOf(this.firstTick);
- roundedStart = this.firstTick;
+ if (!me.options.time.min) {
+ me.firstTick = me.getMomentStartOf(me.firstTick);
+ roundedStart = me.firstTick;
} else {
- roundedStart = this.getMomentStartOf(this.firstTick);
+ roundedStart = me.getMomentStartOf(me.firstTick);
}
// Only round the last tick if we have no hard maximum
- if (!this.options.time.max) {
- var roundedEnd = this.getMomentStartOf(this.lastTick);
- if (roundedEnd.diff(this.lastTick, this.tickUnit, true) !== 0) {
- // Do not use end of because we need this to be in the next time unit
- this.lastTick = this.getMomentStartOf(this.lastTick.add(1, this.tickUnit));
+ if (!me.options.time.max) {
+ var roundedEnd = me.getMomentStartOf(me.lastTick);
+ if (roundedEnd.diff(me.lastTick, me.tickUnit, true) !== 0) {
+ // Do not use end of because we need me to be in the next time unit
+ me.lastTick = me.getMomentStartOf(me.lastTick.add(1, me.tickUnit));
}
}
- this.smallestLabelSeparation = this.width;
+ me.smallestLabelSeparation = me.width;
- helpers.each(this.chart.data.datasets, function(dataset, datasetIndex) {
- for (var i = 1; i < this.labelMoments[datasetIndex].length; i++) {
- this.smallestLabelSeparation = Math.min(this.smallestLabelSeparation, this.labelMoments[datasetIndex][i].diff(this.labelMoments[datasetIndex][i - 1], this.tickUnit, true));
+ helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
+ for (var i = 1; i < me.labelMoments[datasetIndex].length; i++) {
+ me.smallestLabelSeparation = Math.min(me.smallestLabelSeparation, me.labelMoments[datasetIndex][i].diff(me.labelMoments[datasetIndex][i - 1], me.tickUnit, true));
}
- }, this);
+ }, me);
// Tick displayFormat override
- if (this.options.time.displayFormat) {
- this.displayFormat = this.options.time.displayFormat;
+ if (me.options.time.displayFormat) {
+ me.displayFormat = me.options.time.displayFormat;
}
// first tick. will have been rounded correctly if options.time.min is not specified
- this.ticks.push(this.firstTick.clone());
+ me.ticks.push(me.firstTick.clone());
// For every unit in between the first and last moment, create a moment and add it to the ticks tick
- for (var i = 1; i <= this.scaleSizeInUnits; ++i) {
- var newTick = roundedStart.clone().add(i, this.tickUnit);
+ for (var i = 1; i <= me.scaleSizeInUnits; ++i) {
+ var newTick = roundedStart.clone().add(i, me.tickUnit);
// Are we greater than the max time
- if (this.options.time.max && newTick.diff(this.lastTick, this.tickUnit, true) >= 0) {
+ if (me.options.time.max && newTick.diff(me.lastTick, me.tickUnit, true) >= 0) {
break;
}
- if (i % this.unitScale === 0) {
- this.ticks.push(newTick);
+ if (i % me.unitScale === 0) {
+ me.ticks.push(newTick);
}
}
// Always show the right tick
- var diff = this.ticks[this.ticks.length - 1].diff(this.lastTick, this.tickUnit);
- if (diff !== 0 || this.scaleSizeInUnits === 0) {
+ var diff = me.ticks[me.ticks.length - 1].diff(me.lastTick, me.tickUnit);
+ if (diff !== 0 || me.scaleSizeInUnits === 0) {
// this is a weird case. If the <max> option is the same as the end option, we can't just diff the times because the tick was created from the roundedStart
// but the last tick was not rounded.
- if (this.options.time.max) {
- this.ticks.push(this.lastTick.clone());
- this.scaleSizeInUnits = this.lastTick.diff(this.ticks[0], this.tickUnit, true);
+ if (me.options.time.max) {
+ me.ticks.push(me.lastTick.clone());
+ me.scaleSizeInUnits = me.lastTick.diff(me.ticks[0], me.tickUnit, true);
} else {
- this.ticks.push(this.lastTick.clone());
- this.scaleSizeInUnits = this.lastTick.diff(this.firstTick, this.tickUnit, true);
+ me.ticks.push(me.lastTick.clone());
+ me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
}
}
- this.ctx.restore();
+ me.ctx.restore();
},
// Get tooltip label
getLabelForIndex: function(index, datasetIndex) {
- var label = this.chart.data.labels && index < this.chart.data.labels.length ? this.chart.data.labels[index] : '';
+ var me = this;
+ var label = me.chart.data.labels && index < me.chart.data.labels.length ? me.chart.data.labels[index] : '';
- if (typeof this.chart.data.datasets[datasetIndex].data[0] === 'object') {
- label = this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ if (typeof me.chart.data.datasets[datasetIndex].data[0] === 'object') {
+ label = me.getRightValue(me.chart.data.datasets[datasetIndex].data[index]);
}
// Format nicely
- if (this.options.time.tooltipFormat) {
- label = this.parseTime(label).format(this.options.time.tooltipFormat);
+ if (me.options.time.tooltipFormat) {
+ label = me.parseTime(label).format(me.options.time.tooltipFormat);
}
return label;
}
},
convertTicksToLabels: function() {
- this.tickMoments = this.ticks;
- this.ticks = this.ticks.map(this.tickFormatFunction, this);
+ var me = this;
+ me.tickMoments = me.ticks;
+ me.ticks = me.ticks.map(me.tickFormatFunction, me);
},
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
- var labelMoment = value && value.isValid && value.isValid() ? value : this.getLabelMoment(datasetIndex, index);
+ var me = this;
+ var labelMoment = value && value.isValid && value.isValid() ? value : me.getLabelMoment(datasetIndex, index);
if (labelMoment) {
- var offset = labelMoment.diff(this.firstTick, this.tickUnit, true);
+ var offset = labelMoment.diff(me.firstTick, me.tickUnit, true);
- var decimal = offset / this.scaleSizeInUnits;
+ var decimal = offset / me.scaleSizeInUnits;
- if (this.isHorizontal()) {
- var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
- var valueWidth = innerWidth / Math.max(this.ticks.length - 1, 1);
- var valueOffset = (innerWidth * decimal) + this.paddingLeft;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var valueWidth = innerWidth / Math.max(me.ticks.length - 1, 1);
+ var valueOffset = (innerWidth * decimal) + me.paddingLeft;
- return this.left + Math.round(valueOffset);
+ return me.left + Math.round(valueOffset);
} else {
- var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
- var valueHeight = innerHeight / Math.max(this.ticks.length - 1, 1);
- var heightOffset = (innerHeight * decimal) + this.paddingTop;
+ var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
+ var valueHeight = innerHeight / Math.max(me.ticks.length - 1, 1);
+ var heightOffset = (innerHeight * decimal) + me.paddingTop;
- return this.top + Math.round(heightOffset);
+ return me.top + Math.round(heightOffset);
}
}
},
return this.getPixelForValue(this.tickMoments[index], null, null, includeOffset);
},
getValueForPixel: function(pixel) {
- var innerDimension = this.isHorizontal() ? this.width - (this.paddingLeft + this.paddingRight) : this.height - (this.paddingTop + this.paddingBottom);
- var offset = (pixel - (this.isHorizontal() ? this.left + this.paddingLeft : this.top + this.paddingTop)) / innerDimension;
- offset *= this.scaleSizeInUnits;
- return this.firstTick.clone().add(moment.duration(offset, this.tickUnit).asSeconds(), 'seconds');
+ var me = this;
+ var innerDimension = me.isHorizontal() ? me.width - (me.paddingLeft + me.paddingRight) : me.height - (me.paddingTop + me.paddingBottom);
+ var offset = (pixel - (me.isHorizontal() ? me.left + me.paddingLeft : me.top + me.paddingTop)) / innerDimension;
+ offset *= me.scaleSizeInUnits;
+ return me.firstTick.clone().add(moment.duration(offset, me.tickUnit).asSeconds(), 'seconds');
},
parseTime: function(label) {
- if (typeof this.options.time.parser === 'string') {
- return moment(label, this.options.time.parser);
+ var me = this;
+ if (typeof me.options.time.parser === 'string') {
+ return moment(label, me.options.time.parser);
}
- if (typeof this.options.time.parser === 'function') {
- return this.options.time.parser(label);
+ if (typeof me.options.time.parser === 'function') {
+ return me.options.time.parser(label);
}
// Date objects
if (typeof label.getMonth === 'function' || typeof label === 'number') {
return label;
}
// Custom parsing (return an instance of moment)
- if (typeof this.options.time.format !== 'string' && this.options.time.format.call) {
+ if (typeof me.options.time.format !== 'string' && me.options.time.format.call) {
console.warn("options.time.format is deprecated and replaced by options.time.parser. See http://nnnick.github.io/Chart.js/docs-v2/#scales-time-scale");
- return this.options.time.format(label);
+ return me.options.time.format(label);
}
// Moment format parsing
- return moment(label, this.options.time.format);
+ return moment(label, me.options.time.format);
}
});
Chart.scaleService.registerScaleType("time", TimeScale, defaultConfig);
projects / thirdparty / Chart.js.git / commitdiff
