1426 lines
48 KiB
JavaScript
1426 lines
48 KiB
JavaScript
/**
|
|
* (c) 2010-2018 Torstein Honsi
|
|
*
|
|
* License: www.highcharts.com/license
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
import H from './Globals.js';
|
|
import './Utilities.js';
|
|
import './Series.js';
|
|
|
|
var addEvent = H.addEvent,
|
|
arrayMax = H.arrayMax,
|
|
defined = H.defined,
|
|
extend = H.extend,
|
|
format = H.format,
|
|
merge = H.merge,
|
|
noop = H.noop,
|
|
pick = H.pick,
|
|
relativeLength = H.relativeLength,
|
|
Series = H.Series,
|
|
seriesTypes = H.seriesTypes,
|
|
stableSort = H.stableSort,
|
|
isArray = H.isArray,
|
|
splat = H.splat;
|
|
|
|
/**
|
|
* General distribution algorithm for distributing labels of differing size
|
|
* along a confined length in two dimensions. The algorithm takes an array of
|
|
* objects containing a size, a target and a rank. It will place the labels as
|
|
* close as possible to their targets, skipping the lowest ranked labels if
|
|
* necessary.
|
|
*
|
|
* @private
|
|
* @function Highcharts.distribute
|
|
*
|
|
* @param {Array<object>} boxes
|
|
*
|
|
* @param {number} len
|
|
*
|
|
* @param {number} maxDistance
|
|
*/
|
|
H.distribute = function (boxes, len, maxDistance) {
|
|
|
|
var i,
|
|
overlapping = true,
|
|
origBoxes = boxes, // Original array will be altered with added .pos
|
|
restBoxes = [], // The outranked overshoot
|
|
box,
|
|
target,
|
|
total = 0,
|
|
reducedLen = origBoxes.reducedLen || len;
|
|
|
|
function sortByTarget(a, b) {
|
|
return a.target - b.target;
|
|
}
|
|
|
|
// If the total size exceeds the len, remove those boxes with the lowest
|
|
// rank
|
|
i = boxes.length;
|
|
while (i--) {
|
|
total += boxes[i].size;
|
|
}
|
|
|
|
// Sort by rank, then slice away overshoot
|
|
if (total > reducedLen) {
|
|
stableSort(boxes, function (a, b) {
|
|
return (b.rank || 0) - (a.rank || 0);
|
|
});
|
|
i = 0;
|
|
total = 0;
|
|
while (total <= reducedLen) {
|
|
total += boxes[i].size;
|
|
i++;
|
|
}
|
|
restBoxes = boxes.splice(i - 1, boxes.length);
|
|
}
|
|
|
|
// Order by target
|
|
stableSort(boxes, sortByTarget);
|
|
|
|
|
|
// So far we have been mutating the original array. Now
|
|
// create a copy with target arrays
|
|
boxes = boxes.map(function (box) {
|
|
return {
|
|
size: box.size,
|
|
targets: [box.target],
|
|
align: pick(box.align, 0.5)
|
|
};
|
|
});
|
|
|
|
while (overlapping) {
|
|
// Initial positions: target centered in box
|
|
i = boxes.length;
|
|
while (i--) {
|
|
box = boxes[i];
|
|
// Composite box, average of targets
|
|
target = (
|
|
Math.min.apply(0, box.targets) +
|
|
Math.max.apply(0, box.targets)
|
|
) / 2;
|
|
box.pos = Math.min(
|
|
Math.max(0, target - box.size * box.align),
|
|
len - box.size
|
|
);
|
|
}
|
|
|
|
// Detect overlap and join boxes
|
|
i = boxes.length;
|
|
overlapping = false;
|
|
while (i--) {
|
|
// Overlap
|
|
if (i > 0 && boxes[i - 1].pos + boxes[i - 1].size > boxes[i].pos) {
|
|
// Add this size to the previous box
|
|
boxes[i - 1].size += boxes[i].size;
|
|
boxes[i - 1].targets = boxes[i - 1]
|
|
.targets
|
|
.concat(boxes[i].targets);
|
|
boxes[i - 1].align = 0.5;
|
|
|
|
// Overlapping right, push left
|
|
if (boxes[i - 1].pos + boxes[i - 1].size > len) {
|
|
boxes[i - 1].pos = len - boxes[i - 1].size;
|
|
}
|
|
boxes.splice(i, 1); // Remove this item
|
|
overlapping = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add the rest (hidden boxes)
|
|
origBoxes.push.apply(origBoxes, restBoxes);
|
|
|
|
|
|
// Now the composite boxes are placed, we need to put the original boxes
|
|
// within them
|
|
i = 0;
|
|
boxes.some(function (box) {
|
|
var posInCompositeBox = 0;
|
|
if (box.targets.some(function () {
|
|
origBoxes[i].pos = box.pos + posInCompositeBox;
|
|
|
|
// If the distance between the position and the target exceeds
|
|
// maxDistance, abort the loop and decrease the length in increments
|
|
// of 10% to recursively reduce the number of visible boxes by
|
|
// rank. Once all boxes are within the maxDistance, we're good.
|
|
if (
|
|
Math.abs(origBoxes[i].pos - origBoxes[i].target) >
|
|
maxDistance
|
|
) {
|
|
// Reset the positions that are already set
|
|
origBoxes.slice(0, i + 1).forEach(function (box) {
|
|
delete box.pos;
|
|
});
|
|
|
|
// Try with a smaller length
|
|
origBoxes.reducedLen =
|
|
(origBoxes.reducedLen || len) - (len * 0.1);
|
|
|
|
// Recurse
|
|
if (origBoxes.reducedLen > len * 0.1) {
|
|
H.distribute(origBoxes, len, maxDistance);
|
|
}
|
|
|
|
// Exceeded maxDistance => abort
|
|
return true;
|
|
}
|
|
|
|
posInCompositeBox += origBoxes[i].size;
|
|
i++;
|
|
|
|
})) {
|
|
// Exceeded maxDistance => abort
|
|
return true;
|
|
}
|
|
});
|
|
|
|
// Add the rest (hidden) boxes and sort by target
|
|
stableSort(origBoxes, sortByTarget);
|
|
};
|
|
|
|
|
|
/**
|
|
* Draw the data labels
|
|
*
|
|
* @private
|
|
* @function Highcharts.Series#drawDataLabels
|
|
*
|
|
* @fires Highcharts.Series#event:afterDrawDataLabels
|
|
*/
|
|
Series.prototype.drawDataLabels = function () {
|
|
var series = this,
|
|
chart = series.chart,
|
|
seriesOptions = series.options,
|
|
seriesDlOptions = seriesOptions.dataLabels,
|
|
points = series.points,
|
|
pointOptions,
|
|
hasRendered = series.hasRendered || 0,
|
|
dataLabelsGroup,
|
|
defer = pick(seriesDlOptions.defer, !!seriesOptions.animation),
|
|
renderer = chart.renderer;
|
|
|
|
/*
|
|
* Handle the dataLabels.filter option.
|
|
*/
|
|
function applyFilter(point, options) {
|
|
var filter = options.filter,
|
|
op,
|
|
prop,
|
|
val;
|
|
if (filter) {
|
|
op = filter.operator;
|
|
prop = point[filter.property];
|
|
val = filter.value;
|
|
if (
|
|
(op === '>' && prop > val) ||
|
|
(op === '<' && prop < val) ||
|
|
(op === '>=' && prop >= val) ||
|
|
(op === '<=' && prop <= val) ||
|
|
(op === '==' && prop == val) || // eslint-disable-line eqeqeq
|
|
(op === '===' && prop === val)
|
|
) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Merge two objects that can be arrays. If one of them is an array, the
|
|
* other is merged into each element. If both are arrays, each element is
|
|
* merged by index. If neither are arrays, we use normal merge.
|
|
*/
|
|
function mergeArrays(one, two) {
|
|
var res = [],
|
|
i;
|
|
if (isArray(one) && !isArray(two)) {
|
|
res = one.map(function (el) {
|
|
return merge(el, two);
|
|
});
|
|
} else if (isArray(two) && !isArray(one)) {
|
|
res = two.map(function (el) {
|
|
return merge(one, el);
|
|
});
|
|
} else if (!isArray(one) && !isArray(two)) {
|
|
res = merge(one, two);
|
|
} else {
|
|
i = Math.max(one.length, two.length);
|
|
while (i--) {
|
|
res[i] = merge(one[i], two[i]);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
// Merge in plotOptions.dataLabels for series
|
|
seriesDlOptions = mergeArrays(
|
|
mergeArrays(
|
|
chart.options.plotOptions &&
|
|
chart.options.plotOptions.series &&
|
|
chart.options.plotOptions.series.dataLabels,
|
|
chart.options.plotOptions &&
|
|
chart.options.plotOptions[series.type] &&
|
|
chart.options.plotOptions[series.type].dataLabels
|
|
),
|
|
seriesDlOptions
|
|
);
|
|
|
|
H.fireEvent(this, 'drawDataLabels');
|
|
|
|
if (
|
|
isArray(seriesDlOptions) ||
|
|
seriesDlOptions.enabled ||
|
|
series._hasPointLabels
|
|
) {
|
|
|
|
// Create a separate group for the data labels to avoid rotation
|
|
dataLabelsGroup = series.plotGroup(
|
|
'dataLabelsGroup',
|
|
'data-labels',
|
|
defer && !hasRendered ? 'hidden' : 'visible', // #5133
|
|
seriesDlOptions.zIndex || 6
|
|
);
|
|
|
|
if (defer) {
|
|
dataLabelsGroup.attr({ opacity: +hasRendered }); // #3300
|
|
if (!hasRendered) {
|
|
addEvent(series, 'afterAnimate', function () {
|
|
if (series.visible) { // #2597, #3023, #3024
|
|
dataLabelsGroup.show(true);
|
|
}
|
|
dataLabelsGroup[
|
|
seriesOptions.animation ? 'animate' : 'attr'
|
|
]({ opacity: 1 }, { duration: 200 });
|
|
});
|
|
}
|
|
}
|
|
|
|
// Make the labels for each point
|
|
points.forEach(function (point) {
|
|
|
|
// Merge in series options for the point.
|
|
// @note dataLabelAttribs (like pointAttribs) would eradicate
|
|
// the need for dlOptions, and simplify the section below.
|
|
pointOptions = splat(
|
|
mergeArrays(
|
|
seriesDlOptions,
|
|
point.dlOptions || // dlOptions is used in treemaps
|
|
(point.options && point.options.dataLabels)
|
|
)
|
|
);
|
|
|
|
// Handle each individual data label for this point
|
|
pointOptions.forEach(function (labelOptions, i) {
|
|
// Options for one datalabel
|
|
var labelEnabled = labelOptions.enabled &&
|
|
!point.isNull && // #2282, #4641, #7112
|
|
applyFilter(point, labelOptions),
|
|
labelConfig,
|
|
formatString,
|
|
labelText,
|
|
style,
|
|
rotation,
|
|
attr,
|
|
dataLabel = point.dataLabels ? point.dataLabels[i] :
|
|
point.dataLabel,
|
|
connector = point.connectors ? point.connectors[i] :
|
|
point.connector,
|
|
isNew = !dataLabel;
|
|
|
|
if (labelEnabled) {
|
|
// Create individual options structure that can be extended
|
|
// without affecting others
|
|
labelConfig = point.getLabelConfig();
|
|
formatString = (
|
|
labelOptions[point.formatPrefix + 'Format'] ||
|
|
labelOptions.format
|
|
);
|
|
|
|
labelText = defined(formatString) ?
|
|
format(formatString, labelConfig, chart.time) :
|
|
(
|
|
labelOptions[point.formatPrefix + 'Formatter'] ||
|
|
labelOptions.formatter
|
|
).call(labelConfig, labelOptions);
|
|
|
|
style = labelOptions.style;
|
|
rotation = labelOptions.rotation;
|
|
|
|
if (!chart.styledMode) {
|
|
// Determine the color
|
|
style.color = pick(
|
|
labelOptions.color,
|
|
style.color,
|
|
series.color,
|
|
'#000000'
|
|
);
|
|
// Get automated contrast color
|
|
if (style.color === 'contrast') {
|
|
point.contrastColor = renderer.getContrast(
|
|
point.color || series.color
|
|
);
|
|
style.color = labelOptions.inside ||
|
|
pick(
|
|
labelOptions.distance,
|
|
point.labelDistance
|
|
) < 0 ||
|
|
!!seriesOptions.stacking ?
|
|
point.contrastColor :
|
|
'#000000';
|
|
}
|
|
if (seriesOptions.cursor) {
|
|
style.cursor = seriesOptions.cursor;
|
|
}
|
|
}
|
|
|
|
attr = {
|
|
r: labelOptions.borderRadius || 0,
|
|
rotation: rotation,
|
|
padding: labelOptions.padding,
|
|
zIndex: 1
|
|
};
|
|
|
|
if (!chart.styledMode) {
|
|
attr.fill = labelOptions.backgroundColor;
|
|
attr.stroke = labelOptions.borderColor;
|
|
attr['stroke-width'] = labelOptions.borderWidth;
|
|
}
|
|
|
|
// Remove unused attributes (#947)
|
|
H.objectEach(attr, function (val, name) {
|
|
if (val === undefined) {
|
|
delete attr[name];
|
|
}
|
|
});
|
|
}
|
|
|
|
// If the point is outside the plot area, destroy it. #678, #820
|
|
if (dataLabel && (!labelEnabled || !defined(labelText))) {
|
|
point.dataLabel =
|
|
point.dataLabel && point.dataLabel.destroy();
|
|
if (point.dataLabels) {
|
|
// Remove point.dataLabels if this was the last one
|
|
if (point.dataLabels.length === 1) {
|
|
delete point.dataLabels;
|
|
} else {
|
|
delete point.dataLabels[i];
|
|
}
|
|
}
|
|
if (!i) {
|
|
delete point.dataLabel;
|
|
}
|
|
if (connector) {
|
|
point.connector = point.connector.destroy();
|
|
if (point.connectors) {
|
|
// Remove point.connectors if this was the last one
|
|
if (point.connectors.length === 1) {
|
|
delete point.connectors;
|
|
} else {
|
|
delete point.connectors[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Individual labels are disabled if the are explicitly disabled
|
|
// in the point options, or if they fall outside the plot area.
|
|
} else if (labelEnabled && defined(labelText)) {
|
|
|
|
if (!dataLabel) {
|
|
// Create new label element
|
|
point.dataLabels = point.dataLabels || [];
|
|
dataLabel = point.dataLabels[i] = rotation ?
|
|
|
|
// Labels don't rotate, use text element
|
|
renderer.text(labelText, 0, -9999)
|
|
.addClass('highcharts-data-label') :
|
|
|
|
// We can use label
|
|
renderer.label(
|
|
labelText,
|
|
0,
|
|
-9999,
|
|
labelOptions.shape,
|
|
null,
|
|
null,
|
|
labelOptions.useHTML,
|
|
null,
|
|
'data-label'
|
|
);
|
|
|
|
// Store for backwards compatibility
|
|
if (!i) {
|
|
point.dataLabel = dataLabel;
|
|
}
|
|
|
|
dataLabel.addClass(
|
|
' highcharts-data-label-color-' + point.colorIndex +
|
|
' ' + (labelOptions.className || '') +
|
|
( // #3398
|
|
labelOptions.useHTML ?
|
|
' highcharts-tracker' :
|
|
''
|
|
)
|
|
);
|
|
} else {
|
|
// Use old element and just update text
|
|
attr.text = labelText;
|
|
}
|
|
|
|
// Store data label options for later access
|
|
dataLabel.options = labelOptions;
|
|
|
|
dataLabel.attr(attr);
|
|
|
|
if (!chart.styledMode) {
|
|
// Styles must be applied before add in order to read
|
|
// text bounding box
|
|
dataLabel.css(style).shadow(labelOptions.shadow);
|
|
}
|
|
|
|
if (!dataLabel.added) {
|
|
dataLabel.add(dataLabelsGroup);
|
|
}
|
|
|
|
// Now the data label is created and placed at 0,0, so we
|
|
// need to align it
|
|
series.alignDataLabel(
|
|
point, dataLabel, labelOptions, null, isNew
|
|
);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
H.fireEvent(this, 'afterDrawDataLabels');
|
|
};
|
|
|
|
/**
|
|
* Align each individual data label.
|
|
*
|
|
* @private
|
|
* @function Highcharts.Series#alignDataLabel
|
|
*
|
|
* @param {Highcharts.Point} point
|
|
*
|
|
* @param {Highcharts.SVGElement} dataLabel
|
|
*
|
|
* @param {Highcharts.PlotSeriesDataLabelsOptions} options
|
|
*
|
|
* @param {Highcharts.BBoxObject} alignTo
|
|
*
|
|
* @param {boolean} isNew
|
|
*/
|
|
Series.prototype.alignDataLabel = function (
|
|
point,
|
|
dataLabel,
|
|
options,
|
|
alignTo,
|
|
isNew
|
|
) {
|
|
var chart = this.chart,
|
|
inverted = this.isCartesian && chart.inverted,
|
|
plotX = pick(point.dlBox && point.dlBox.centerX, point.plotX, -9999),
|
|
plotY = pick(point.plotY, -9999),
|
|
bBox = dataLabel.getBBox(),
|
|
baseline,
|
|
rotation = options.rotation,
|
|
normRotation,
|
|
negRotation,
|
|
align = options.align,
|
|
rotCorr, // rotation correction
|
|
// Math.round for rounding errors (#2683), alignTo to allow column
|
|
// labels (#2700)
|
|
visible =
|
|
this.visible &&
|
|
(
|
|
point.series.forceDL ||
|
|
chart.isInsidePlot(plotX, Math.round(plotY), inverted) ||
|
|
(
|
|
alignTo && chart.isInsidePlot(
|
|
plotX,
|
|
inverted ?
|
|
alignTo.x + 1 :
|
|
alignTo.y + alignTo.height - 1,
|
|
inverted
|
|
)
|
|
)
|
|
),
|
|
alignAttr, // the final position;
|
|
justify = pick(options.overflow, 'justify') === 'justify';
|
|
|
|
if (visible) {
|
|
|
|
baseline = chart.renderer.fontMetrics(
|
|
chart.styledMode ? undefined : options.style.fontSize,
|
|
dataLabel
|
|
).b;
|
|
|
|
// The alignment box is a singular point
|
|
alignTo = extend({
|
|
x: inverted ? this.yAxis.len - plotY : plotX,
|
|
y: Math.round(inverted ? this.xAxis.len - plotX : plotY),
|
|
width: 0,
|
|
height: 0
|
|
}, alignTo);
|
|
|
|
// Add the text size for alignment calculation
|
|
extend(options, {
|
|
width: bBox.width,
|
|
height: bBox.height
|
|
});
|
|
|
|
// Allow a hook for changing alignment in the last moment, then do the
|
|
// alignment
|
|
if (rotation) {
|
|
justify = false; // Not supported for rotated text
|
|
rotCorr = chart.renderer.rotCorr(baseline, rotation); // #3723
|
|
alignAttr = {
|
|
x: alignTo.x + options.x + alignTo.width / 2 + rotCorr.x,
|
|
y: (
|
|
alignTo.y +
|
|
options.y +
|
|
{ top: 0, middle: 0.5, bottom: 1 }[options.verticalAlign] *
|
|
alignTo.height
|
|
)
|
|
};
|
|
dataLabel[isNew ? 'attr' : 'animate'](alignAttr)
|
|
.attr({ // #3003
|
|
align: align
|
|
});
|
|
|
|
// Compensate for the rotated label sticking out on the sides
|
|
normRotation = (rotation + 720) % 360;
|
|
negRotation = normRotation > 180 && normRotation < 360;
|
|
|
|
if (align === 'left') {
|
|
alignAttr.y -= negRotation ? bBox.height : 0;
|
|
} else if (align === 'center') {
|
|
alignAttr.x -= bBox.width / 2;
|
|
alignAttr.y -= bBox.height / 2;
|
|
} else if (align === 'right') {
|
|
alignAttr.x -= bBox.width;
|
|
alignAttr.y -= negRotation ? 0 : bBox.height;
|
|
}
|
|
dataLabel.placed = true;
|
|
dataLabel.alignAttr = alignAttr;
|
|
|
|
} else {
|
|
dataLabel.align(options, null, alignTo);
|
|
alignAttr = dataLabel.alignAttr;
|
|
}
|
|
|
|
// Handle justify or crop
|
|
if (justify && alignTo.height >= 0) { // #8830
|
|
point.isLabelJustified = this.justifyDataLabel(
|
|
dataLabel,
|
|
options,
|
|
alignAttr,
|
|
bBox,
|
|
alignTo,
|
|
isNew
|
|
);
|
|
|
|
// Now check that the data label is within the plot area
|
|
} else if (pick(options.crop, true)) {
|
|
visible =
|
|
chart.isInsidePlot(
|
|
alignAttr.x,
|
|
alignAttr.y
|
|
) &&
|
|
chart.isInsidePlot(
|
|
alignAttr.x + bBox.width,
|
|
alignAttr.y + bBox.height
|
|
);
|
|
}
|
|
|
|
// When we're using a shape, make it possible with a connector or an
|
|
// arrow pointing to thie point
|
|
if (options.shape && !rotation) {
|
|
dataLabel[isNew ? 'attr' : 'animate']({
|
|
anchorX: inverted ? chart.plotWidth - point.plotY : point.plotX,
|
|
anchorY: inverted ? chart.plotHeight - point.plotX : point.plotY
|
|
});
|
|
}
|
|
}
|
|
|
|
// Show or hide based on the final aligned position
|
|
if (!visible) {
|
|
dataLabel.attr({ y: -9999 });
|
|
dataLabel.placed = false; // don't animate back in
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* If data labels fall partly outside the plot area, align them back in, in a
|
|
* way that doesn't hide the point.
|
|
*
|
|
* @private
|
|
* @function Highcharts.Series#justifyDataLabel
|
|
*
|
|
* @param {Highcharts.SVGElement} dataLabel
|
|
*
|
|
* @param {Highcharts.PlotSeriesDataLabelsOptions} options
|
|
*
|
|
* @param {*} alignAttr
|
|
*
|
|
* @param {Highcharts.BBoxObject} bBox
|
|
*
|
|
* @param {boolean} isNew
|
|
*
|
|
* @return {boolean}
|
|
*/
|
|
Series.prototype.justifyDataLabel = function (
|
|
dataLabel,
|
|
options,
|
|
alignAttr,
|
|
bBox,
|
|
alignTo,
|
|
isNew
|
|
) {
|
|
var chart = this.chart,
|
|
align = options.align,
|
|
verticalAlign = options.verticalAlign,
|
|
off,
|
|
justified,
|
|
padding = dataLabel.box ? 0 : (dataLabel.padding || 0);
|
|
|
|
// Off left
|
|
off = alignAttr.x + padding;
|
|
if (off < 0) {
|
|
if (align === 'right') {
|
|
options.align = 'left';
|
|
} else {
|
|
options.x = -off;
|
|
}
|
|
justified = true;
|
|
}
|
|
|
|
// Off right
|
|
off = alignAttr.x + bBox.width - padding;
|
|
if (off > chart.plotWidth) {
|
|
if (align === 'left') {
|
|
options.align = 'right';
|
|
} else {
|
|
options.x = chart.plotWidth - off;
|
|
}
|
|
justified = true;
|
|
}
|
|
|
|
// Off top
|
|
off = alignAttr.y + padding;
|
|
if (off < 0) {
|
|
if (verticalAlign === 'bottom') {
|
|
options.verticalAlign = 'top';
|
|
} else {
|
|
options.y = -off;
|
|
}
|
|
justified = true;
|
|
}
|
|
|
|
// Off bottom
|
|
off = alignAttr.y + bBox.height - padding;
|
|
if (off > chart.plotHeight) {
|
|
if (verticalAlign === 'top') {
|
|
options.verticalAlign = 'bottom';
|
|
} else {
|
|
options.y = chart.plotHeight - off;
|
|
}
|
|
justified = true;
|
|
}
|
|
|
|
if (justified) {
|
|
dataLabel.placed = !isNew;
|
|
dataLabel.align(options, null, alignTo);
|
|
}
|
|
|
|
return justified;
|
|
};
|
|
|
|
if (seriesTypes.pie) {
|
|
seriesTypes.pie.prototype.dataLabelPositioners = {
|
|
|
|
// Based on the value computed in Highcharts' distribute algorithm.
|
|
radialDistributionY: function (point) {
|
|
return point.top + point.distributeBox.pos;
|
|
},
|
|
// get the x - use the natural x position for labels near the
|
|
// top and bottom, to prevent the top and botton slice
|
|
// connectors from touching each other on either side
|
|
|
|
// Based on the value computed in Highcharts' distribute algorithm.
|
|
radialDistributionX: function (series, point, y, naturalY) {
|
|
return series.getX(
|
|
y < point.top + 2 || y > point.bottom - 2 ?
|
|
naturalY :
|
|
y,
|
|
point.half,
|
|
point
|
|
);
|
|
},
|
|
|
|
// dataLabels.distance determines the x position of the label
|
|
justify: function (point, radius, seriesCenter) {
|
|
return seriesCenter[0] + (point.half ? -1 : 1) *
|
|
(radius + point.labelDistance);
|
|
},
|
|
|
|
// Left edges of the left-half labels touch the left edge of the plot
|
|
// area. Right edges of the right-half labels touch the right edge of
|
|
// the plot area.
|
|
alignToPlotEdges: function (
|
|
dataLabel,
|
|
half,
|
|
plotWidth,
|
|
plotLeft
|
|
) {
|
|
var dataLabelWidth = dataLabel.getBBox().width;
|
|
return half ? dataLabelWidth + plotLeft :
|
|
plotWidth - dataLabelWidth - plotLeft;
|
|
},
|
|
|
|
// Connectors of each side end in the same x position. Labels are
|
|
// aligned to them. Left edge of the widest left-half label touches the
|
|
// left edge of the plot area. Right edge of the widest right-half label
|
|
// touches the right edge of the plot area.
|
|
alignToConnectors: function (
|
|
points,
|
|
half,
|
|
plotWidth,
|
|
plotLeft
|
|
) {
|
|
var maxDataLabelWidth = 0,
|
|
dataLabelWidth;
|
|
|
|
// find widest data label
|
|
points.forEach(function (point) {
|
|
dataLabelWidth = point.dataLabel.getBBox().width;
|
|
if (dataLabelWidth > maxDataLabelWidth) {
|
|
maxDataLabelWidth = dataLabelWidth;
|
|
}
|
|
});
|
|
return half ? maxDataLabelWidth + plotLeft :
|
|
plotWidth - maxDataLabelWidth - plotLeft;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Override the base drawDataLabels method by pie specific functionality
|
|
*
|
|
* @private
|
|
* @function Highcharts.seriesTypes.pie#drawDataLabels
|
|
*/
|
|
seriesTypes.pie.prototype.drawDataLabels = function () {
|
|
var series = this,
|
|
data = series.data,
|
|
point,
|
|
chart = series.chart,
|
|
options = series.options.dataLabels,
|
|
connectorPadding = options.connectorPadding,
|
|
connectorWidth = pick(options.connectorWidth, 1),
|
|
plotWidth = chart.plotWidth,
|
|
plotHeight = chart.plotHeight,
|
|
plotLeft = chart.plotLeft,
|
|
maxWidth = Math.round(chart.chartWidth / 3),
|
|
connector,
|
|
seriesCenter = series.center,
|
|
radius = seriesCenter[2] / 2,
|
|
centerY = seriesCenter[1],
|
|
dataLabel,
|
|
dataLabelWidth,
|
|
// labelPos,
|
|
labelPosition,
|
|
labelHeight,
|
|
// divide the points into right and left halves for anti collision
|
|
halves = [
|
|
[], // right
|
|
[] // left
|
|
],
|
|
x,
|
|
y,
|
|
visibility,
|
|
j,
|
|
overflow = [0, 0, 0, 0], // top, right, bottom, left
|
|
dataLabelPositioners = series.dataLabelPositioners;
|
|
|
|
// get out if not enabled
|
|
if (!series.visible || (!options.enabled && !series._hasPointLabels)) {
|
|
return;
|
|
}
|
|
|
|
// Reset all labels that have been shortened
|
|
data.forEach(function (point) {
|
|
if (point.dataLabel && point.visible && point.dataLabel.shortened) {
|
|
point.dataLabel
|
|
.attr({
|
|
width: 'auto'
|
|
}).css({
|
|
width: 'auto',
|
|
textOverflow: 'clip'
|
|
});
|
|
point.dataLabel.shortened = false;
|
|
}
|
|
});
|
|
|
|
|
|
// run parent method
|
|
Series.prototype.drawDataLabels.apply(series);
|
|
|
|
data.forEach(function (point) {
|
|
if (point.dataLabel) {
|
|
|
|
if (point.visible) { // #407, #2510
|
|
|
|
// Arrange points for detection collision
|
|
halves[point.half].push(point);
|
|
|
|
// Reset positions (#4905)
|
|
point.dataLabel._pos = null;
|
|
|
|
// Avoid long labels squeezing the pie size too far down
|
|
if (
|
|
!defined(options.style.width) &&
|
|
!defined(
|
|
point.options.dataLabels &&
|
|
point.options.dataLabels.style &&
|
|
point.options.dataLabels.style.width
|
|
)
|
|
) {
|
|
if (point.dataLabel.getBBox().width > maxWidth) {
|
|
point.dataLabel.css({
|
|
// Use a fraction of the maxWidth to avoid
|
|
// wrapping close to the end of the string.
|
|
width: maxWidth * 0.7
|
|
});
|
|
point.dataLabel.shortened = true;
|
|
}
|
|
}
|
|
} else {
|
|
point.dataLabel = point.dataLabel.destroy();
|
|
// Workaround to make pies destroy multiple datalabels
|
|
// correctly. This logic needs rewriting to support multiple
|
|
// datalabels fully.
|
|
if (point.dataLabels && point.dataLabels.length === 1) {
|
|
delete point.dataLabels;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
/* Loop over the points in each half, starting from the top and bottom
|
|
* of the pie to detect overlapping labels.
|
|
*/
|
|
halves.forEach(function (points, i) {
|
|
|
|
var top,
|
|
bottom,
|
|
length = points.length,
|
|
positions = [],
|
|
naturalY,
|
|
sideOverflow,
|
|
size,
|
|
distributionLength;
|
|
|
|
if (!length) {
|
|
return;
|
|
}
|
|
|
|
// Sort by angle
|
|
series.sortByAngle(points, i - 0.5);
|
|
// Only do anti-collision when we have dataLabels outside the pie
|
|
// and have connectors. (#856)
|
|
if (series.maxLabelDistance > 0) {
|
|
top = Math.max(
|
|
0,
|
|
centerY - radius - series.maxLabelDistance
|
|
);
|
|
bottom = Math.min(
|
|
centerY + radius + series.maxLabelDistance,
|
|
chart.plotHeight
|
|
);
|
|
points.forEach(function (point) {
|
|
// check if specific points' label is outside the pie
|
|
if (point.labelDistance > 0 && point.dataLabel) {
|
|
// point.top depends on point.labelDistance value
|
|
// Used for calculation of y value in getX method
|
|
point.top = Math.max(
|
|
0,
|
|
centerY - radius - point.labelDistance
|
|
);
|
|
point.bottom = Math.min(
|
|
centerY + radius + point.labelDistance,
|
|
chart.plotHeight
|
|
);
|
|
size = point.dataLabel.getBBox().height || 21;
|
|
|
|
// point.positionsIndex is needed for getting index of
|
|
// parameter related to specific point inside positions
|
|
// array - not every point is in positions array.
|
|
point.distributeBox = {
|
|
target: point.labelPosition.natural.y -
|
|
point.top + size / 2,
|
|
size: size,
|
|
rank: point.y
|
|
};
|
|
positions.push(point.distributeBox);
|
|
}
|
|
});
|
|
distributionLength = bottom + size - top;
|
|
H.distribute(
|
|
positions,
|
|
distributionLength,
|
|
distributionLength / 5
|
|
);
|
|
}
|
|
|
|
// Now the used slots are sorted, fill them up sequentially
|
|
for (j = 0; j < length; j++) {
|
|
|
|
point = points[j];
|
|
// labelPos = point.labelPos;
|
|
labelPosition = point.labelPosition;
|
|
dataLabel = point.dataLabel;
|
|
visibility = point.visible === false ? 'hidden' : 'inherit';
|
|
naturalY = labelPosition.natural.y;
|
|
y = naturalY;
|
|
|
|
if (positions && defined(point.distributeBox)) {
|
|
if (point.distributeBox.pos === undefined) {
|
|
visibility = 'hidden';
|
|
} else {
|
|
labelHeight = point.distributeBox.size;
|
|
// Find label's y position
|
|
y = dataLabelPositioners.radialDistributionY(point);
|
|
}
|
|
}
|
|
|
|
// It is needed to delete point.positionIndex for
|
|
// dynamically added points etc.
|
|
|
|
delete point.positionIndex;
|
|
|
|
// Find label's x position
|
|
// justify is undocumented in the API - preserve support for it
|
|
if (options.justify) {
|
|
x = dataLabelPositioners.justify(point, radius,
|
|
seriesCenter);
|
|
} else {
|
|
switch (options.alignTo) {
|
|
case 'connectors':
|
|
x = dataLabelPositioners.alignToConnectors(points,
|
|
i, plotWidth, plotLeft);
|
|
break;
|
|
case 'plotEdges':
|
|
x = dataLabelPositioners.alignToPlotEdges(dataLabel,
|
|
i, plotWidth, plotLeft);
|
|
break;
|
|
default:
|
|
x = dataLabelPositioners.radialDistributionX(series,
|
|
point, y, naturalY);
|
|
}
|
|
}
|
|
|
|
// Record the placement and visibility
|
|
dataLabel._attr = {
|
|
visibility: visibility,
|
|
align: labelPosition.alignment
|
|
};
|
|
|
|
dataLabel._pos = {
|
|
x: (
|
|
x +
|
|
options.x +
|
|
({
|
|
left: connectorPadding,
|
|
right: -connectorPadding
|
|
}[labelPosition.alignment] || 0)
|
|
),
|
|
|
|
// 10 is for the baseline (label vs text)
|
|
y: y + options.y - 10
|
|
};
|
|
// labelPos.x = x;
|
|
// labelPos.y = y;
|
|
labelPosition.final.x = x;
|
|
labelPosition.final.y = y;
|
|
|
|
// Detect overflowing data labels
|
|
if (pick(options.crop, true)) {
|
|
dataLabelWidth = dataLabel.getBBox().width;
|
|
|
|
sideOverflow = null;
|
|
// Overflow left
|
|
if (
|
|
x - dataLabelWidth < connectorPadding &&
|
|
i === 1 // left half
|
|
) {
|
|
sideOverflow = Math.round(
|
|
dataLabelWidth - x + connectorPadding
|
|
);
|
|
overflow[3] = Math.max(sideOverflow, overflow[3]);
|
|
|
|
// Overflow right
|
|
} else if (
|
|
x + dataLabelWidth > plotWidth - connectorPadding &&
|
|
i === 0 // right half
|
|
) {
|
|
sideOverflow = Math.round(
|
|
x + dataLabelWidth - plotWidth + connectorPadding
|
|
);
|
|
overflow[1] = Math.max(sideOverflow, overflow[1]);
|
|
}
|
|
|
|
// Overflow top
|
|
if (y - labelHeight / 2 < 0) {
|
|
overflow[0] = Math.max(
|
|
Math.round(-y + labelHeight / 2),
|
|
overflow[0]
|
|
);
|
|
|
|
// Overflow left
|
|
} else if (y + labelHeight / 2 > plotHeight) {
|
|
overflow[2] = Math.max(
|
|
Math.round(y + labelHeight / 2 - plotHeight),
|
|
overflow[2]
|
|
);
|
|
}
|
|
dataLabel.sideOverflow = sideOverflow;
|
|
}
|
|
} // for each point
|
|
}); // for each half
|
|
|
|
// Do not apply the final placement and draw the connectors until we
|
|
// have verified that labels are not spilling over.
|
|
if (
|
|
arrayMax(overflow) === 0 ||
|
|
this.verifyDataLabelOverflow(overflow)
|
|
) {
|
|
|
|
// Place the labels in the final position
|
|
this.placeDataLabels();
|
|
|
|
// Draw the connectors
|
|
if (connectorWidth) {
|
|
this.points.forEach(function (point) {
|
|
var isNew;
|
|
|
|
connector = point.connector;
|
|
dataLabel = point.dataLabel;
|
|
|
|
if (
|
|
dataLabel &&
|
|
dataLabel._pos &&
|
|
point.visible &&
|
|
point.labelDistance > 0
|
|
) {
|
|
visibility = dataLabel._attr.visibility;
|
|
|
|
isNew = !connector;
|
|
|
|
if (isNew) {
|
|
point.connector = connector = chart.renderer.path()
|
|
.addClass('highcharts-data-label-connector ' +
|
|
' highcharts-color-' + point.colorIndex +
|
|
(
|
|
point.className ?
|
|
' ' + point.className :
|
|
''
|
|
)
|
|
)
|
|
.add(series.dataLabelsGroup);
|
|
|
|
if (!chart.styledMode) {
|
|
connector.attr({
|
|
'stroke-width': connectorWidth,
|
|
'stroke': (
|
|
options.connectorColor ||
|
|
point.color ||
|
|
'#666666'
|
|
)
|
|
});
|
|
}
|
|
}
|
|
connector[isNew ? 'attr' : 'animate']({
|
|
d: point.getConnectorPath()
|
|
});
|
|
connector.attr('visibility', visibility);
|
|
|
|
} else if (connector) {
|
|
point.connector = connector.destroy();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Extendable method for getting the path of the connector between the data
|
|
* label and the pie slice.
|
|
*
|
|
* @private
|
|
* @function Highcharts.seriesTypes.pie#connectorPath
|
|
*
|
|
* @param {*} labelPos
|
|
*
|
|
* @return {Highcharts.PathObject}
|
|
*/
|
|
// TODO: depracated - remove it
|
|
/*
|
|
seriesTypes.pie.prototype.connectorPath = function (labelPos) {
|
|
var x = labelPos.x,
|
|
y = labelPos.y;
|
|
return pick(this.options.dataLabels.softConnector, true) ? [
|
|
'M',
|
|
// end of the string at the label
|
|
x + (labelPos[6] === 'left' ? 5 : -5), y,
|
|
'C',
|
|
x, y, // first break, next to the label
|
|
2 * labelPos[2] - labelPos[4], 2 * labelPos[3] - labelPos[5],
|
|
labelPos[2], labelPos[3], // second break
|
|
'L',
|
|
labelPos[4], labelPos[5] // base
|
|
] : [
|
|
'M',
|
|
// end of the string at the label
|
|
x + (labelPos[6] === 'left' ? 5 : -5), y,
|
|
'L',
|
|
labelPos[2], labelPos[3], // second break
|
|
'L',
|
|
labelPos[4], labelPos[5] // base
|
|
];
|
|
};
|
|
*/
|
|
|
|
|
|
/**
|
|
* Perform the final placement of the data labels after we have verified
|
|
* that they fall within the plot area.
|
|
*
|
|
* @private
|
|
* @function Highcharts.seriesTypes.pie#placeDataLabels
|
|
*/
|
|
seriesTypes.pie.prototype.placeDataLabels = function () {
|
|
this.points.forEach(function (point) {
|
|
var dataLabel = point.dataLabel,
|
|
_pos;
|
|
if (dataLabel && point.visible) {
|
|
_pos = dataLabel._pos;
|
|
if (_pos) {
|
|
|
|
// Shorten data labels with ellipsis if they still overflow
|
|
// after the pie has reached minSize (#223).
|
|
if (dataLabel.sideOverflow) {
|
|
dataLabel._attr.width =
|
|
dataLabel.getBBox().width - dataLabel.sideOverflow;
|
|
|
|
dataLabel.css({
|
|
width: dataLabel._attr.width + 'px',
|
|
textOverflow: (
|
|
(this.options.dataLabels.style || {})
|
|
.textOverflow ||
|
|
'ellipsis'
|
|
)
|
|
});
|
|
dataLabel.shortened = true;
|
|
}
|
|
|
|
dataLabel.attr(dataLabel._attr);
|
|
dataLabel[dataLabel.moved ? 'animate' : 'attr'](_pos);
|
|
dataLabel.moved = true;
|
|
} else if (dataLabel) {
|
|
dataLabel.attr({ y: -9999 });
|
|
}
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
seriesTypes.pie.prototype.alignDataLabel = noop;
|
|
|
|
/**
|
|
* Verify whether the data labels are allowed to draw, or we should run more
|
|
* translation and data label positioning to keep them inside the plot area.
|
|
* Returns true when data labels are ready to draw.
|
|
*
|
|
* @private
|
|
* @function Highcharts.seriesTypes.pie#verifyDataLabelOverflow
|
|
*
|
|
* @param {boolean} overflow
|
|
*
|
|
* @return {boolean}
|
|
*/
|
|
seriesTypes.pie.prototype.verifyDataLabelOverflow = function (overflow) {
|
|
|
|
var center = this.center,
|
|
options = this.options,
|
|
centerOption = options.center,
|
|
minSize = options.minSize || 80,
|
|
newSize = minSize,
|
|
// If a size is set, return true and don't try to shrink the pie
|
|
// to fit the labels.
|
|
ret = options.size !== null;
|
|
|
|
if (!ret) {
|
|
// Handle horizontal size and center
|
|
if (centerOption[0] !== null) { // Fixed center
|
|
newSize = Math.max(center[2] -
|
|
Math.max(overflow[1], overflow[3]), minSize);
|
|
|
|
} else { // Auto center
|
|
newSize = Math.max(
|
|
// horizontal overflow
|
|
center[2] - overflow[1] - overflow[3],
|
|
minSize
|
|
);
|
|
// horizontal center
|
|
center[0] += (overflow[3] - overflow[1]) / 2;
|
|
}
|
|
|
|
// Handle vertical size and center
|
|
if (centerOption[1] !== null) { // Fixed center
|
|
newSize = Math.max(Math.min(newSize, center[2] -
|
|
Math.max(overflow[0], overflow[2])), minSize);
|
|
|
|
} else { // Auto center
|
|
newSize = Math.max(
|
|
Math.min(
|
|
newSize,
|
|
// vertical overflow
|
|
center[2] - overflow[0] - overflow[2]
|
|
),
|
|
minSize
|
|
);
|
|
// vertical center
|
|
center[1] += (overflow[0] - overflow[2]) / 2;
|
|
}
|
|
|
|
// If the size must be decreased, we need to run translate and
|
|
// drawDataLabels again
|
|
if (newSize < center[2]) {
|
|
center[2] = newSize;
|
|
center[3] = Math.min( // #3632
|
|
relativeLength(options.innerSize || 0, newSize),
|
|
newSize
|
|
);
|
|
this.translate(center);
|
|
|
|
if (this.drawDataLabels) {
|
|
this.drawDataLabels();
|
|
}
|
|
// Else, return true to indicate that the pie and its labels is
|
|
// within the plot area
|
|
} else {
|
|
ret = true;
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
}
|
|
|
|
if (seriesTypes.column) {
|
|
|
|
/**
|
|
* Override the basic data label alignment by adjusting for the position of
|
|
* the column.
|
|
*
|
|
* @private
|
|
* @function Highcharts.seriesTypes.column#alignDataLabel
|
|
*
|
|
* @param {Highcharts.Point} point
|
|
*
|
|
* @param {Highcharts.SVGElement} dataLabel
|
|
*
|
|
* @param {Highcharts.PlotSeriesDataLabelsOptions} options
|
|
*
|
|
* @param {Highcharts.BBoxObject} alignTo
|
|
*
|
|
* @param {boolean} isNew
|
|
*/
|
|
seriesTypes.column.prototype.alignDataLabel = function (
|
|
point,
|
|
dataLabel,
|
|
options,
|
|
alignTo,
|
|
isNew
|
|
) {
|
|
var inverted = this.chart.inverted,
|
|
series = point.series,
|
|
// data label box for alignment
|
|
dlBox = point.dlBox || point.shapeArgs,
|
|
below = pick(
|
|
point.below, // range series
|
|
point.plotY > pick(this.translatedThreshold, series.yAxis.len)
|
|
),
|
|
// draw it inside the box?
|
|
inside = pick(options.inside, !!this.options.stacking),
|
|
overshoot;
|
|
|
|
// Align to the column itself, or the top of it
|
|
if (dlBox) { // Area range uses this method but not alignTo
|
|
alignTo = merge(dlBox);
|
|
|
|
if (alignTo.y < 0) {
|
|
alignTo.height += alignTo.y;
|
|
alignTo.y = 0;
|
|
}
|
|
overshoot = alignTo.y + alignTo.height - series.yAxis.len;
|
|
if (overshoot > 0) {
|
|
alignTo.height -= overshoot;
|
|
}
|
|
|
|
if (inverted) {
|
|
alignTo = {
|
|
x: series.yAxis.len - alignTo.y - alignTo.height,
|
|
y: series.xAxis.len - alignTo.x - alignTo.width,
|
|
width: alignTo.height,
|
|
height: alignTo.width
|
|
};
|
|
}
|
|
|
|
// Compute the alignment box
|
|
if (!inside) {
|
|
if (inverted) {
|
|
alignTo.x += below ? 0 : alignTo.width;
|
|
alignTo.width = 0;
|
|
} else {
|
|
alignTo.y += below ? alignTo.height : 0;
|
|
alignTo.height = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// When alignment is undefined (typically columns and bars), display the
|
|
// individual point below or above the point depending on the threshold
|
|
options.align = pick(
|
|
options.align,
|
|
!inverted || inside ? 'center' : below ? 'right' : 'left'
|
|
);
|
|
options.verticalAlign = pick(
|
|
options.verticalAlign,
|
|
inverted || inside ? 'middle' : below ? 'top' : 'bottom'
|
|
);
|
|
|
|
// Call the parent method
|
|
Series.prototype.alignDataLabel.call(
|
|
this,
|
|
point,
|
|
dataLabel,
|
|
options,
|
|
alignTo,
|
|
isNew
|
|
);
|
|
|
|
// If label was justified and we have contrast, set it:
|
|
if (point.isLabelJustified && point.contrastColor) {
|
|
dataLabel.css({
|
|
color: point.contrastColor
|
|
});
|
|
}
|
|
};
|
|
}
|