/**
* @license Highcharts JS v6.0.4 (2017-12-15)
*
* (c) 2016 Highsoft AS
* Authors: Jon Arild Nygard
*
* License: www.highcharts.com/license
*/
'use strict';
(function(factory) {
if (typeof module === 'object' && module.exports) {
module.exports = factory;
} else {
factory(Highcharts);
}
}(function(Highcharts) {
var draw = (function() {
var isFn = function(x) {
return typeof x === 'function';
};
/**
* draw - Handles the drawing of a point.
* TODO: add type checking.
*
* @param {object} params Parameters.
* @return {undefined} Returns undefined.
*/
var draw = function draw(params) {
var point = this,
graphic = point.graphic,
animate = params.animate,
attr = params.attr,
onComplete = params.onComplete,
css = params.css,
group = params.group,
renderer = params.renderer,
shape = params.shapeArgs,
type = params.shapeType;
if (point.shouldDraw()) {
if (!graphic) {
point.graphic = graphic = renderer[type](shape).add(group);
}
graphic.css(css).attr(attr).animate(animate, undefined, onComplete);
} else if (graphic) {
graphic.animate(animate, undefined, function() {
point.graphic = graphic = graphic.destroy();
if (isFn(onComplete)) {
onComplete();
}
});
}
if (graphic) {
graphic.addClass(point.getClassName(), true);
}
};
return draw;
}());
(function(H, drawPoint) {
/**
* (c) 2016 Highsoft AS
* Authors: Jon Arild Nygard
*
* License: www.highcharts.com/license
*
* This is an experimental Highcharts module which enables visualization
* of a word cloud.
*/
var each = H.each,
extend = H.extend,
isArray = H.isArray,
isNumber = H.isNumber,
isObject = H.isObject,
Series = H.Series;
/**
* isRectanglesIntersecting - Detects if there is a collision between two
* rectangles.
*
* @param {object} r1 First rectangle.
* @param {object} r2 Second rectangle.
* @return {boolean} Returns true if the rectangles overlap.
*/
var isRectanglesIntersecting = function isRectanglesIntersecting(r1, r2) {
return !(
r2.left > r1.right ||
r2.right < r1.left ||
r2.top > r1.bottom ||
r2.bottom < r1.top
);
};
/**
* intersectsAnyWord - Detects if a word collides with any previously placed
* words.
*
* @param {Point} point Point which the word is connected to.
* @param {Array} points Previously placed points to check against.
* @return {boolean} Returns true if there is collision.
*/
var intersectsAnyWord = function intersectsAnyWord(point, points) {
var intersects = false,
rect1 = point.rect,
rect2;
if (point.lastCollidedWith) {
rect2 = point.lastCollidedWith.rect;
intersects = isRectanglesIntersecting(rect1, rect2);
// If they no longer intersects, remove the cache from the point.
if (!intersects) {
delete point.lastCollidedWith;
}
}
if (!intersects) {
intersects = !!H.find(points, function(p) {
var result;
rect2 = p.rect;
result = isRectanglesIntersecting(rect1, rect2);
if (result) {
point.lastCollidedWith = p;
}
return result;
});
}
return intersects;
};
/**
* archimedeanSpiral - Gives a set of cordinates for an Archimedian Spiral.
*
* @param {number} attempt How far along the spiral we have traversed.
* @param {object} params Additional parameters.
* @param {object} params.field Size of field.
* @return {boolean|object} Resulting coordinates, x and y. False if the word
* should be dropped from the visualization.
*/
var archimedeanSpiral = function archimedeanSpiral(attempt, params) {
var field = params.field,
result = false,
maxDelta = (field.width * field.width) + (field.height * field.height),
t = attempt * 0.2;
// Emergency brake. TODO make spiralling logic more foolproof.
if (attempt <= 10000) {
result = {
x: t * Math.cos(t),
y: t * Math.sin(t)
};
if (!(Math.min(Math.abs(result.x), Math.abs(result.y)) < maxDelta)) {
result = false;
}
}
return result;
};
/**
* squareSpiral - Gives a set of cordinates for an rectangular spiral.
*
* @param {number} attempt How far along the spiral we have traversed.
* @param {object} params Additional parameters.
* @return {boolean|object} Resulting coordinates, x and y. False if the word
* should be dropped from the visualization.
*/
var squareSpiral = function squareSpiral(attempt) {
var k = Math.ceil((Math.sqrt(attempt) - 1) / 2),
t = 2 * k + 1,
m = Math.pow(t, 2),
isBoolean = function(x) {
return typeof x === 'boolean';
},
result = false;
t -= 1;
if (attempt <= 10000) {
if (isBoolean(result) && attempt >= m - t) {
result = {
x: k - (m - attempt),
y: -k
};
}
m -= t;
if (isBoolean(result) && attempt >= m - t) {
result = {
x: -k,
y: -k + (m - attempt)
};
}
m -= t;
if (isBoolean(result)) {
if (attempt >= m - t) {
result = {
x: -k + (m - attempt),
y: k
};
} else {
result = {
x: k,
y: k - (m - attempt - t)
};
}
}
result.x *= 5;
result.y *= 5;
}
return result;
};
/**
* rectangularSpiral - Gives a set of cordinates for an rectangular spiral.
*
* @param {number} attempt How far along the spiral we have traversed.
* @param {object} params Additional parameters.
* @return {boolean|object} Resulting coordinates, x and y. False if the word
* should be dropped from the visualization.
*/
var rectangularSpiral = function rectangularSpiral(attempt, params) {
var result = squareSpiral(attempt, params),
field = params.field;
if (result) {
result.x *= field.ratio;
}
return result;
};
/**
* getRandomPosition
*
* @param {number} size
* @return {number}
*/
var getRandomPosition = function getRandomPosition(size) {
return Math.round((size * (Math.random() + 0.5)) / 2);
};
/**
* getScale - Calculates the proper scale to fit the cloud inside the plotting
* area.
*
* @param {number} targetWidth Width of target area.
* @param {number} targetHeight Height of target area.
* @param {object} field The playing field.
* @param {Series} series Series object.
* @return {number} Returns the value to scale the playing field up to the size
* of the target area.
*/
var getScale = function getScale(targetWidth, targetHeight, field) {
var height = Math.max(Math.abs(field.top), Math.abs(field.bottom)) * 2,
width = Math.max(Math.abs(field.left), Math.abs(field.right)) * 2,
scaleX = 1 / width * targetWidth,
scaleY = 1 / height * targetHeight;
return Math.min(scaleX, scaleY);
};
/**
* getPlayingField - Calculates what is called the playing field.
* The field is the area which all the words are allowed to be positioned
* within. The area is proportioned to match the target aspect ratio.
*
* @param {number} targetWidth Width of the target area.
* @param {number} targetHeight Height of the target area.
* @return {object} The width and height of the playing field.
*/
var getPlayingField = function getPlayingField(targetWidth, targetHeight) {
var ratio = targetWidth / targetHeight;
return {
width: 256 * ratio,
height: 256,
ratio: ratio
};
};
/**
* getRotation - Calculates a number of degrees to rotate, based upon a number
* of orientations within a range from-to.
*
* @param {type} orientations Number of orientations.
* @param {type} from The smallest degree of rotation.
* @param {type} to The largest degree of rotation.
* @return {type} Returns the resulting rotation for the word.
*/
var getRotation = function getRotation(orientations, from, to) {
var range = to - from,
intervals = range / (orientations - 1),
orientation = Math.floor(Math.random() * orientations);
return from + (orientation * intervals);
};
/**
* outsidePlayingField - Detects if a word is placed outside the playing field.
*
* @param {Point} point Point which the word is connected to.
* @param {object} field The width and height of the playing field.
* @return {boolean} Returns true if the word is placed outside the field.
*/
var outsidePlayingField = function outsidePlayingField(wrapper, field) {
var rect = wrapper.getBBox(),
playingField = {
left: -(field.width / 2),
right: field.width / 2,
top: -(field.height / 2),
bottom: field.height / 2
};
return !(
playingField.left < rect.x &&
playingField.right > (rect.x + rect.width) &&
playingField.top < rect.y &&
playingField.bottom > (rect.y + rect.height)
);
};
/**
* intersectionTesting - Check if a point intersects with previously placed
* words, or if it goes outside the field boundaries. If a collision, then try
* to adjusts the position.
*
* @param {object} point Point to test for intersections.
* @param {object} options Options object.
* @return {boolean|object} Returns an object with how much to correct the
* positions. Returns false if the word should not be placed at all.
*/
var intersectionTesting = function intersectionTesting(point, options) {
var placed = options.placed,
element = options.element,
field = options.field,
clientRect = options.clientRect,
spiral = options.spiral,
attempt = 1,
delta = {
x: 0,
y: 0
},
rect = point.rect = extend({}, clientRect);
/**
* while w intersects any previously placed words:
* do {
* move w a little bit along a spiral path
* } while any part of w is outside the playing field and
* the spiral radius is still smallish
*/
while (
(
intersectsAnyWord(point, placed) ||
outsidePlayingField(element, field)
) && delta !== false
) {
delta = spiral(attempt, {
field: field
});
if (isObject(delta)) {
// Update the DOMRect with new positions.
rect.left = clientRect.left + delta.x;
rect.right = rect.left + rect.width;
rect.top = clientRect.top + delta.y;
rect.bottom = rect.top + rect.height;
}
attempt++;
}
return delta;
};
/**
* updateFieldBoundaries - If a rectangle is outside a give field, then the
* boundaries of the field is adjusted accordingly. Modifies the field object
* which is passed as the first parameter.
*
* @param {object} field The bounding box of a playing field.
* @param {object} placement The bounding box for a placed point.
* @return {object} Returns a modified field object.
*/
var updateFieldBoundaries = function updateFieldBoundaries(field, rectangle) {
// TODO improve type checking.
if (!isNumber(field.left) || field.left > rectangle.left) {
field.left = rectangle.left;
}
if (!isNumber(field.right) || field.right < rectangle.right) {
field.right = rectangle.right;
}
if (!isNumber(field.top) || field.top > rectangle.top) {
field.top = rectangle.top;
}
if (!isNumber(field.bottom) || field.bottom < rectangle.bottom) {
field.bottom = rectangle.bottom;
}
return field;
};
/**
* A word cloud is a visualization of a set of words, where the size and
* placement of a word is determined by how it is weighted.
*
* @extends {plotOptions.column}
* @sample highcharts/demo/wordcloud Word Cloud chart
* @excluding allAreas, boostThreshold, clip, colorAxis, compare, compareBase,
* crisp, cropTreshold, dataGrouping, dataLabels, depth, edgeColor,
* findNearestPointBy, getExtremesFromAll, grouping, groupPadding,
* groupZPadding, joinBy, maxPointWidth, minPointLength,
* navigatorOptions, negativeColor, pointInterval, pointIntervalUnit,
* pointPadding, pointPlacement, pointRange, pointStart, pointWidth,
* pointStart, pointWidth, shadow, showCheckbox, showInNavigator,
* softThreshold, stacking, threshold, zoneAxis, zones
* @product highcharts
* @since 6.0.0
* @optionparent plotOptions.wordcloud
*/
var wordCloudOptions = {
animation: {
duration: 500
},
borderWidth: 0,
clip: false, // Something goes wrong with clip. // TODO fix this
/**
* When using automatic point colors pulled from the `options.colors`
* collection, this option determines whether the chart should receive
* one color per series or one color per point.
*
* @see [series colors](#plotOptions.column.colors)
*/
colorByPoint: true,
/**
* This option decides which algorithm is used for placement, and rotation
* of a word. The choice of algorith is therefore a crucial part of the
* resulting layout of the wordcloud.
* It is possible for users to add their own custom placement strategies
* for use in word cloud. Read more about it in our
* [documentation](https://www.highcharts.com/docs/chart-and-series-types/word-cloud-series#custom-placement-strategies)
*
* @validvalue: ["center", "random"]
*/
placementStrategy: 'center',
/**
* Rotation options for the words in the wordcloud.
* @sample highcharts/plotoptions/wordcloud-rotation
* Word cloud with rotation
*/
rotation: {
/**
* The smallest degree of rotation for a word.
*/
from: 0,
/**
* The number of possible orientations for a word, within the range of
* `rotation.from` and `rotation.to`.
*/
orientations: 2,
/**
* The largest degree of rotation for a word.
*/
to: 90
},
showInLegend: false,
/**
* Spiral used for placing a word after the inital position experienced a
* collision with either another word or the borders.
* It is possible for users to add their own custom spiralling algorithms
* for use in word cloud. Read more about it in our
* [documentation](https://www.highcharts.com/docs/chart-and-series-types/word-cloud-series#custom-spiralling-algorithm)
*
* @validvalue: ["archimedean", "rectangular", "square"]
*/
spiral: 'rectangular',
/**
* CSS styles for the words.
*
* @type {CSSObject}
* @default {"fontFamily":"sans-serif", "fontWeight": "900"}
*/
style: {
fontFamily: 'sans-serif',
fontWeight: '900'
},
tooltip: {
followPointer: true,
pointFormat: '<span style="color:{point.color}">\u25CF</span> {series.name}: <b>{point.weight}</b><br/>'
}
};
/**
* Properties of the WordCloud series.
*/
var wordCloudSeries = {
animate: Series.prototype.animate,
bindAxes: function() {
var wordcloudAxis = {
endOnTick: false,
gridLineWidth: 0,
lineWidth: 0,
maxPadding: 0,
startOnTick: false,
title: null,
tickPositions: []
};
Series.prototype.bindAxes.call(this);
extend(this.yAxis.options, wordcloudAxis);
extend(this.xAxis.options, wordcloudAxis);
},
/**
* deriveFontSize - Calculates the fontSize of a word based on its weight.
*
* @param {number} relativeWeight The weight of the word, on a scale 0-1.
* @return {number} Returns the resulting fontSize of a word.
*/
deriveFontSize: function deriveFontSize(relativeWeight) {
var maxFontSize = 25;
return Math.floor(maxFontSize * relativeWeight);
},
drawPoints: function() {
var series = this,
hasRendered = series.hasRendered,
xAxis = series.xAxis,
yAxis = series.yAxis,
chart = series.chart,
group = series.group,
options = series.options,
animation = options.animation,
renderer = chart.renderer,
testElement = renderer.text().add(group),
placed = [],
placementStrategy = series.placementStrategy[options.placementStrategy],
spiral = series.spirals[options.spiral],
rotation = options.rotation,
scale,
weights = series.points
.map(function(p) {
return p.weight;
}),
maxWeight = Math.max.apply(null, weights),
field = getPlayingField(xAxis.len, yAxis.len),
data = series.points
.sort(function(a, b) {
return b.weight - a.weight; // Sort descending
});
each(data, function(point) {
var relativeWeight = 1 / maxWeight * point.weight,
css = extend({
fontSize: series.deriveFontSize(relativeWeight) + 'px',
fill: point.color
}, options.style),
placement = placementStrategy(point, {
data: data,
field: field,
placed: placed,
rotation: rotation
}),
attr = {
align: 'center',
x: placement.x,
y: placement.y,
text: point.name,
rotation: placement.rotation
},
animate,
delta,
clientRect;
testElement.css(css).attr(attr);
// Cache the original DOMRect values for later calculations.
point.clientRect = clientRect = extend({},
testElement.element.getBoundingClientRect()
);
delta = intersectionTesting(point, {
clientRect: clientRect,
element: testElement,
field: field,
placed: placed,
spiral: spiral
});
/**
* Check if point was placed, if so delete it,
* otherwise place it on the correct positions.
*/
if (isObject(delta)) {
attr.x += delta.x;
attr.y += delta.y;
extend(placement, {
left: attr.x - (clientRect.width / 2),
right: attr.x + (clientRect.width / 2),
top: attr.y - (clientRect.height / 2),
bottom: attr.y + (clientRect.height / 2)
});
field = updateFieldBoundaries(field, placement);
placed.push(point);
point.isNull = false;
} else {
point.isNull = true;
}
if (animation) {
// Animate to new positions
animate = {
x: attr.x,
y: attr.y
};
// Animate from center of chart
if (!hasRendered) {
attr.x = 0;
attr.y = 0;
// or animate from previous position
} else {
delete attr.x;
delete attr.y;
}
}
point.draw({
animate: animate,
attr: attr,
css: css,
group: group,
renderer: renderer,
shapeArgs: undefined,
shapeType: 'text'
});
});
// Destroy the element after use.
testElement = testElement.destroy();
/**
* Scale the series group to fit within the plotArea.
*/
scale = getScale(xAxis.len, yAxis.len, field);
series.group.attr({
scaleX: scale,
scaleY: scale
});
},
hasData: function() {
var series = this;
return (
isObject(series) &&
series.visible === true &&
isArray(series.points) &&
series.points.length > 0
);
},
/**
* Strategies used for deciding rotation and initial position of a word.
* To implement a custom strategy, have a look at the function
* randomPlacement for example.
*/
placementStrategy: {
random: function randomPlacement(point, options) {
var field = options.field,
r = options.rotation;
return {
x: getRandomPosition(field.width) - (field.width / 2),
y: getRandomPosition(field.height) - (field.height / 2),
rotation: getRotation(r.orientations, r.from, r.to)
};
},
center: function centerPlacement(point, options) {
var r = options.rotation;
return {
x: 0,
y: 0,
rotation: getRotation(r.orientations, r.from, r.to)
};
}
},
pointArrayMap: ['weight'],
/**
* Spirals used for placing a word after the inital position experienced a
* collision with either another word or the borders.
* To implement a custom spiral, look at the function archimedeanSpiral for
* example.
*/
spirals: {
'archimedean': archimedeanSpiral,
'rectangular': rectangularSpiral,
'square': squareSpiral
},
getPlotBox: function() {
var series = this,
chart = series.chart,
inverted = chart.inverted,
// Swap axes for inverted (#2339)
xAxis = series[(inverted ? 'yAxis' : 'xAxis')],
yAxis = series[(inverted ? 'xAxis' : 'yAxis')],
width = xAxis ? xAxis.len : chart.plotWidth,
height = yAxis ? yAxis.len : chart.plotHeight,
x = xAxis ? xAxis.left : chart.plotLeft,
y = yAxis ? yAxis.top : chart.plotTop;
return {
translateX: x + (width / 2),
translateY: y + (height / 2),
scaleX: 1, // #1623
scaleY: 1
};
}
};
/**
* Properties of the Sunburst series.
*/
var wordCloudPoint = {
draw: drawPoint,
shouldDraw: function shouldDraw() {
var point = this;
return !point.isNull;
}
};
/**
* A `wordcloud` series. If the [type](#series.wordcloud.type) option is
* not specified, it is inherited from [chart.type](#chart.type).
*
* For options that apply to multiple series, it is recommended to add
* them to the [plotOptions.series](#plotOptions.series) options structure.
* To apply to all series of this specific type, apply it to [plotOptions.
* wordcloud](#plotOptions.wordcloud).
*
* @type {Object}
* @extends series,plotOptions.wordcloud
* @product highcharts
* @apioption series.wordcloud
*/
/**
* An array of data points for the series. For the `wordcloud` series
* type, points can be given in the following ways:
*
* 1. An array of arrays with 2 values. In this case, the values
* correspond to `name,weight`.
*
* ```js
* data: [
* ['Lorem', 4],
* ['Ipsum', 1]
* ]
* ```
*
* 2. An array of objects with named values. The objects are point
* configuration objects as seen below. If the total number of data
* points exceeds the series' [turboThreshold](#series.arearange.turboThreshold),
* this option is not available.
*
* ```js
* data: [{
* name: "Lorem",
* weight: 4
* }, {
* name: "Ipsum",
* weight: 1
* }]
* ```
*
* @type {Array<Object|Array>}
* @extends series.line.data
* @excluding drilldown,marker,x,y
* @product highcharts
* @apioption series.wordcloud.data
*/
/**
* The name decides the text for a word.
*
* @type {String}
* @default undefined
* @since 6.0.0
* @product highcharts
* @apioption series.sunburst.data.name
*/
/**
* The weighting of a word. The weight decides the relative size of a word
* compared to the rest of the collection.
*
* @type {Number}
* @default undefined
* @since 6.0.0
* @product highcharts
* @apioption series.sunburst.data.weight
*/
H.seriesType('wordcloud', 'column', wordCloudOptions, wordCloudSeries, wordCloudPoint);
}(Highcharts, draw));
}));