/**
* @license
* Highcharts funnel module
*
* (c) 2010-2016 Torstein Honsi
*
* License: www.highcharts.com/license
*/
/* eslint indent:0 */
(function (factory) {
if (typeof module === 'object' && module.exports) {
module.exports = factory;
} else {
factory(Highcharts);
}
}(function (Highcharts) {
'use strict';
// create shortcuts
var defaultOptions = Highcharts.getOptions(),
defaultPlotOptions = defaultOptions.plotOptions,
seriesTypes = Highcharts.seriesTypes,
merge = Highcharts.merge,
noop = function () {},
each = Highcharts.each,
pick = Highcharts.pick;
// set default options
defaultPlotOptions.funnel = merge(defaultPlotOptions.pie, {
animation: false,
center: ['50%', '50%'],
width: '90%',
neckWidth: '30%',
height: '100%',
neckHeight: '25%',
reversed: false,
dataLabels: {
//position: 'right',
connectorWidth: 1,
connectorColor: '#606060'
},
size: true, // to avoid adapting to data label size in Pie.drawDataLabels
states: {
select: {
color: '#C0C0C0',
borderColor: '#000000',
shadow: false
}
}
});
seriesTypes.funnel = Highcharts.extendClass(seriesTypes.pie, {
type: 'funnel',
animate: noop,
/**
* Overrides the pie translate method
*/
translate: function () {
var
// Get positions - either an integer or a percentage string must be given
getLength = function (length, relativeTo) {
return (/%$/).test(length) ?
relativeTo * parseInt(length, 10) / 100 :
parseInt(length, 10);
},
sum = 0,
series = this,
chart = series.chart,
options = series.options,
reversed = options.reversed,
ignoreHiddenPoint = options.ignoreHiddenPoint,
plotWidth = chart.plotWidth,
plotHeight = chart.plotHeight,
cumulative = 0, // start at top
center = options.center,
centerX = getLength(center[0], plotWidth),
centerY = getLength(center[1], plotHeight),
width = getLength(options.width, plotWidth),
tempWidth,
getWidthAt,
height = getLength(options.height, plotHeight),
neckWidth = getLength(options.neckWidth, plotWidth),
neckHeight = getLength(options.neckHeight, plotHeight),
neckY = (centerY - height / 2) + height - neckHeight,
data = series.data,
path,
fraction,
half = options.dataLabels.position === 'left' ? 1 : 0,
x1,
y1,
x2,
x3,
y3,
x4,
y5;
// Return the width at a specific y coordinate
series.getWidthAt = getWidthAt = function (y) {
var top = (centerY - height / 2);
return y > neckY || height === neckHeight ?
neckWidth :
neckWidth + (width - neckWidth) * (1 - (y - top) / (height - neckHeight));
};
series.getX = function (y, half) {
return centerX + (half ? -1 : 1) * ((getWidthAt(reversed ? plotHeight - y : y) / 2) + options.dataLabels.distance);
};
// Expose
series.center = [centerX, centerY, height];
series.centerX = centerX;
/*
* Individual point coordinate naming:
*
* x1,y1 _________________ x2,y1
* \ /
* \ /
* \ /
* \ /
* \ /
* x3,y3 _________ x4,y3
*
* Additional for the base of the neck:
*
* | |
* | |
* | |
* x3,y5 _________ x4,y5
*/
// get the total sum
each(data, function (point) {
if (!ignoreHiddenPoint || point.visible !== false) {
sum += point.y;
}
});
each(data, function (point) {
// set start and end positions
y5 = null;
fraction = sum ? point.y / sum : 0;
y1 = centerY - height / 2 + cumulative * height;
y3 = y1 + fraction * height;
//tempWidth = neckWidth + (width - neckWidth) * ((height - neckHeight - y1) / (height - neckHeight));
tempWidth = getWidthAt(y1);
x1 = centerX - tempWidth / 2;
x2 = x1 + tempWidth;
tempWidth = getWidthAt(y3);
x3 = centerX - tempWidth / 2;
x4 = x3 + tempWidth;
// the entire point is within the neck
if (y1 > neckY) {
x1 = x3 = centerX - neckWidth / 2;
x2 = x4 = centerX + neckWidth / 2;
// the base of the neck
} else if (y3 > neckY) {
y5 = y3;
tempWidth = getWidthAt(neckY);
x3 = centerX - tempWidth / 2;
x4 = x3 + tempWidth;
y3 = neckY;
}
if (reversed) {
y1 = height - y1;
y3 = height - y3;
y5 = (y5 ? height - y5 : null);
}
// save the path
path = [
'M',
x1, y1,
'L',
x2, y1,
x4, y3
];
if (y5) {
path.push(x4, y5, x3, y5);
}
path.push(x3, y3, 'Z');
// prepare for using shared dr
point.shapeType = 'path';
point.shapeArgs = { d: path };
// for tooltips and data labels
point.percentage = fraction * 100;
point.plotX = centerX;
point.plotY = (y1 + (y5 || y3)) / 2;
// Placement of tooltips and data labels
point.tooltipPos = [
centerX,
point.plotY
];
// Slice is a noop on funnel points
point.slice = noop;
// Mimicking pie data label placement logic
point.half = half;
if (!ignoreHiddenPoint || point.visible !== false) {
cumulative += fraction;
}
});
},
/**
* Draw a single point (wedge)
* @param {Object} point The point object
* @param {Object} color The color of the point
* @param {Number} brightness The brightness relative to the color
*/
drawPoints: function () {
var series = this,
options = series.options,
chart = series.chart,
renderer = chart.renderer,
pointOptions,
pointAttr,
shapeArgs,
graphic;
each(series.data, function (point) {
pointOptions = point.options;
graphic = point.graphic;
shapeArgs = point.shapeArgs;
pointAttr = {
fill: point.color,
stroke: pick(pointOptions.borderColor, options.borderColor),
'stroke-width': pick(pointOptions.borderWidth, options.borderWidth)
};
if (!graphic) { // Create the shapes
point.graphic = renderer.path(shapeArgs)
.attr(pointAttr)
.add(series.group);
} else { // Update the shapes
graphic.attr(pointAttr).animate(shapeArgs);
}
});
},
/**
* Funnel items don't have angles (#2289)
*/
sortByAngle: function (points) {
points.sort(function (a, b) {
return a.plotY - b.plotY;
});
},
/**
* Extend the pie data label method
*/
drawDataLabels: function () {
var data = this.data,
labelDistance = this.options.dataLabels.distance,
leftSide,
sign,
point,
i = data.length,
x,
y;
// In the original pie label anticollision logic, the slots are distributed
// from one labelDistance above to one labelDistance below the pie. In funnels
// we don't want this.
this.center[2] -= 2 * labelDistance;
// Set the label position array for each point.
while (i--) {
point = data[i];
leftSide = point.half;
sign = leftSide ? 1 : -1;
y = point.plotY;
x = this.getX(y, leftSide);
// set the anchor point for data labels
point.labelPos = [
0, // first break of connector
y, // a/a
x + (labelDistance - 5) * sign, // second break, right outside point shape
y, // a/a
x + labelDistance * sign, // landing point for connector
y, // a/a
leftSide ? 'right' : 'left', // alignment
0 // center angle
];
}
seriesTypes.pie.prototype.drawDataLabels.call(this);
}
});
/**
* Pyramid series type.
* A pyramid series is a special type of funnel, without neck and reversed by default.
*/
defaultOptions.plotOptions.pyramid = Highcharts.merge(defaultOptions.plotOptions.funnel, {
neckWidth: '0%',
neckHeight: '0%',
reversed: true
});
Highcharts.seriesTypes.pyramid = Highcharts.extendClass(Highcharts.seriesTypes.funnel, {
type: 'pyramid'
});
}));
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