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/* *
* (c) 2010-2019 Torstein Honsi
*
* License: www.highcharts.com/license
*/
'use strict';
import H from '../parts/Globals.js';
import '../parts/Utilities.js';
import '../parts/Axis.js';
import '../parts/Tick.js';
import './Pane.js';
var addEvent = H.addEvent,
Axis = H.Axis,
extend = H.extend,
merge = H.merge,
noop = H.noop,
pick = H.pick,
pInt = H.pInt,
Tick = H.Tick,
wrap = H.wrap,
correctFloat = H.correctFloat,
hiddenAxisMixin, // @todo Extract this to a new file
radialAxisMixin, // @todo Extract this to a new file
axisProto = Axis.prototype,
tickProto = Tick.prototype;
// Augmented methods for the x axis in order to hide it completely, used for
// the X axis in gauges
hiddenAxisMixin = {
getOffset: noop,
redraw: function () {
this.isDirty = false; // prevent setting Y axis dirty
},
render: function () {
this.isDirty = false; // prevent setting Y axis dirty
},
setScale: noop,
setCategories: noop,
setTitle: noop
};
// Augmented methods for the value axis
radialAxisMixin = {
// The default options extend defaultYAxisOptions
defaultRadialGaugeOptions: {
labels: {
align: 'center',
x: 0,
y: null // auto
},
minorGridLineWidth: 0,
minorTickInterval: 'auto',
minorTickLength: 10,
minorTickPosition: 'inside',
minorTickWidth: 1,
tickLength: 10,
tickPosition: 'inside',
tickWidth: 2,
title: {
rotation: 0
},
zIndex: 2 // behind dials, points in the series group
},
// Circular axis around the perimeter of a polar chart
defaultRadialXOptions: {
gridLineWidth: 1, // spokes
labels: {
align: null, // auto
distance: 15,
x: 0,
y: null, // auto
style: {
textOverflow: 'none' // wrap lines by default (#7248)
}
},
maxPadding: 0,
minPadding: 0,
showLastLabel: false,
tickLength: 0
},
// Radial axis, like a spoke in a polar chart
defaultRadialYOptions: {
gridLineInterpolation: 'circle',
labels: {
align: 'right',
x: -3,
y: -2
},
showLastLabel: false,
title: {
x: 4,
text: null,
rotation: 90
}
},
// Merge and set options
setOptions: function (userOptions) {
var options = this.options = merge(
this.defaultOptions,
this.defaultRadialOptions,
userOptions
);
// Make sure the plotBands array is instanciated for each Axis
// (#2649)
if (!options.plotBands) {
options.plotBands = [];
}
H.fireEvent(this, 'afterSetOptions');
},
// Wrap the getOffset method to return zero offset for title or labels
// in a radial axis
getOffset: function () {
// Call the Axis prototype method (the method we're in now is on the
// instance)
axisProto.getOffset.call(this);
// Title or label offsets are not counted
this.chart.axisOffset[this.side] = 0;
},
// Get the path for the axis line. This method is also referenced in the
// getPlotLinePath method.
getLinePath: function (lineWidth, radius) {
var center = this.center,
end,
chart = this.chart,
r = pick(radius, center[2] / 2 - this.offset),
path;
if (this.isCircular || radius !== undefined) {
path = this.chart.renderer.symbols.arc(
this.left + center[0],
this.top + center[1],
r,
r,
{
start: this.startAngleRad,
end: this.endAngleRad,
open: true,
innerR: 0
}
);
// Bounds used to position the plotLine label next to the line
// (#7117)
path.xBounds = [this.left + center[0]];
path.yBounds = [this.top + center[1] - r];
} else {
end = this.postTranslate(this.angleRad, r);
path = [
'M',
center[0] + chart.plotLeft,
center[1] + chart.plotTop,
'L',
end.x,
end.y
];
}
return path;
},
/* *
* Override setAxisTranslation by setting the translation to the
* difference in rotation. This allows the translate method to return
* angle for any given value.
*/
setAxisTranslation: function () {
// Call uber method
axisProto.setAxisTranslation.call(this);
// Set transA and minPixelPadding
if (this.center) { // it's not defined the first time
if (this.isCircular) {
this.transA = (this.endAngleRad - this.startAngleRad) /
((this.max - this.min) || 1);
} else {
this.transA = (
(this.center[2] / 2) /
((this.max - this.min) || 1)
);
}
if (this.isXAxis) {
this.minPixelPadding = this.transA * this.minPointOffset;
} else {
// This is a workaround for regression #2593, but categories
// still don't position correctly.
this.minPixelPadding = 0;
}
}
},
/* *
* In case of auto connect, add one closestPointRange to the max value
* right before tickPositions are computed, so that ticks will extend
* passed the real max.
*/
beforeSetTickPositions: function () {
// If autoConnect is true, polygonal grid lines are connected, and
// one closestPointRange is added to the X axis to prevent the last
// point from overlapping the first.
this.autoConnect = (
this.isCircular &&
pick(this.userMax, this.options.max) === undefined &&
correctFloat(this.endAngleRad - this.startAngleRad) ===
correctFloat(2 * Math.PI)
);
if (this.autoConnect) {
this.max += (
(this.categories && 1) ||
this.pointRange ||
this.closestPointRange ||
0
); // #1197, #2260
}
},
/* *
* Override the setAxisSize method to use the arc's circumference as
* length. This allows tickPixelInterval to apply to pixel lengths along
* the perimeter
*/
setAxisSize: function () {
axisProto.setAxisSize.call(this);
if (this.isRadial) {
// Set the center array
this.pane.updateCenter(this);
// The sector is used in Axis.translate to compute the
// translation of reversed axis points (#2570)
if (this.isCircular) {
this.sector = this.endAngleRad - this.startAngleRad;
}
// Axis len is used to lay out the ticks
this.len = this.width = this.height =
this.center[2] * pick(this.sector, 1) / 2;
}
},
/* *
* Returns the x, y coordinate of a point given by a value and a pixel
* distance from center
*/
getPosition: function (value, length) {
return this.postTranslate(
this.isCircular ?
this.translate(value) :
this.angleRad, // #2848
pick(
this.isCircular ? length : this.translate(value),
this.center[2] / 2
) - this.offset
);
},
/* *
* Translate from intermediate plotX (angle), plotY (axis.len - radius)
* to final chart coordinates.
*/
postTranslate: function (angle, radius) {
var chart = this.chart,
center = this.center;
angle = this.startAngleRad + angle;
return {
x: chart.plotLeft + center[0] + Math.cos(angle) * radius,
y: chart.plotTop + center[1] + Math.sin(angle) * radius
};
},
/* *
* Find the path for plot bands along the radial axis
*/
getPlotBandPath: function (from, to, options) {
var center = this.center,
startAngleRad = this.startAngleRad,
fullRadius = center[2] / 2,
radii = [
pick(options.outerRadius, '100%'),
options.innerRadius,
pick(options.thickness, 10)
],
offset = Math.min(this.offset, 0),
percentRegex = /%$/,
start,
end,
angle,
xOnPerimeter,
open,
isCircular = this.isCircular, // X axis in a polar chart
ret;
// Polygonal plot bands
if (this.options.gridLineInterpolation === 'polygon') {
ret = this.getPlotLinePath(from).concat(
this.getPlotLinePath(to, true)
);
// Circular grid bands
} else {
// Keep within bounds
from = Math.max(from, this.min);
to = Math.min(to, this.max);
// Plot bands on Y axis (radial axis) - inner and outer radius
// depend on to and from
if (!isCircular) {
radii[0] = this.translate(from);
radii[1] = this.translate(to);
}
// Convert percentages to pixel values
radii = radii.map(function (radius) {
if (percentRegex.test(radius)) {
radius = (pInt(radius, 10) * fullRadius) / 100;
}
return radius;
});
// Handle full circle
if (options.shape === 'circle' || !isCircular) {
start = -Math.PI / 2;
end = Math.PI * 1.5;
open = true;
} else {
start = startAngleRad + this.translate(from);
end = startAngleRad + this.translate(to);
}
radii[0] -= offset; // #5283
radii[2] -= offset; // #5283
ret = this.chart.renderer.symbols.arc(
this.left + center[0],
this.top + center[1],
radii[0],
radii[0],
{
// Math is for reversed yAxis (#3606)
start: Math.min(start, end),
end: Math.max(start, end),
innerR: pick(radii[1], radii[0] - radii[2]),
open: open
}
);
// Provide positioning boxes for the label (#6406)
if (isCircular) {
angle = (end + start) / 2;
xOnPerimeter = (
this.left +
center[0] +
(center[2] / 2) * Math.cos(angle)
);
ret.xBounds = angle > -Math.PI / 2 && angle < Math.PI / 2 ?
// Right hemisphere
[xOnPerimeter, this.chart.plotWidth] :
// Left hemisphere
[0, xOnPerimeter];
ret.yBounds = [
this.top + center[1] + (center[2] / 2) * Math.sin(angle)
];
// Shift up or down to get the label clear of the perimeter
ret.yBounds[0] += (
(angle > -Math.PI && angle < 0) ||
(angle > Math.PI)
) ? -10 : 10;
}
}
return ret;
},
/* *
* Find the path for plot lines perpendicular to the radial axis.
*/
getPlotLinePath: function (value, reverse) {
var axis = this,
center = axis.center,
chart = axis.chart,
end = axis.getPosition(value),
xAxis,
xy,
tickPositions,
ret;
// Spokes
if (axis.isCircular) {
ret = [
'M',
center[0] + chart.plotLeft,
center[1] + chart.plotTop,
'L',
end.x,
end.y
];
// Concentric circles
} else if (axis.options.gridLineInterpolation === 'circle') {
value = axis.translate(value);
// a value of 0 is in the center, so it won't be visible,
// but draw it anyway for update and animation (#2366)
ret = axis.getLinePath(0, value);
// Concentric polygons
} else {
// Find the X axis in the same pane
chart.xAxis.forEach(function (a) {
if (a.pane === axis.pane) {
xAxis = a;
}
});
ret = [];
value = axis.translate(value);
tickPositions = xAxis.tickPositions;
if (xAxis.autoConnect) {
tickPositions = tickPositions.concat([tickPositions[0]]);
}
// Reverse the positions for concatenation of polygonal plot
// bands
if (reverse) {
tickPositions = [].concat(tickPositions).reverse();
}
tickPositions.forEach(function (pos, i) {
xy = xAxis.getPosition(pos, value);
ret.push(i ? 'L' : 'M', xy.x, xy.y);
});
}
return ret;
},
/* *
* Find the position for the axis title, by default inside the gauge
*/
getTitlePosition: function () {
var center = this.center,
chart = this.chart,
titleOptions = this.options.title;
return {
x: chart.plotLeft + center[0] + (titleOptions.x || 0),
y: (
chart.plotTop +
center[1] -
(
{
high: 0.5,
middle: 0.25,
low: 0
}[titleOptions.align] * center[2]
) +
(titleOptions.y || 0)
)
};
}
};
// Actions before axis init.
addEvent(Axis, 'init', function (e) {
var axis = this,
chart = this.chart,
angular = chart.angular,
polar = chart.polar,
isX = this.isXAxis,
isHidden = angular && isX,
isCircular,
chartOptions = chart.options,
paneIndex = e.userOptions.pane || 0,
pane = this.pane = chart.pane && chart.pane[paneIndex];
// Before prototype.init
if (angular) {
extend(this, isHidden ? hiddenAxisMixin : radialAxisMixin);
isCircular = !isX;
if (isCircular) {
this.defaultRadialOptions = this.defaultRadialGaugeOptions;
}
} else if (polar) {
extend(this, radialAxisMixin);
isCircular = isX;
this.defaultRadialOptions = isX ?
this.defaultRadialXOptions :
merge(this.defaultYAxisOptions, this.defaultRadialYOptions);
}
// Disable certain features on angular and polar axes
if (angular || polar) {
this.isRadial = true;
chart.inverted = false;
chartOptions.chart.zoomType = null;
// Prevent overlapping axis labels (#9761)
chart.labelCollectors.push(function () {
if (
axis.isRadial &&
axis.tickPositions &&
// undocumented option for now, but working
axis.options.labels.allowOverlap !== true
) {
return axis.tickPositions
.map(function (pos) {
return axis.ticks[pos] && axis.ticks[pos].label;
})
.filter(function (label) {
return Boolean(label);
});
}
});
} else {
this.isRadial = false;
}
// A pointer back to this axis to borrow geometry
if (pane && isCircular) {
pane.axis = this;
}
this.isCircular = isCircular;
});
addEvent(Axis, 'afterInit', function () {
var chart = this.chart,
options = this.options,
isHidden = chart.angular && this.isXAxis,
pane = this.pane,
paneOptions = pane && pane.options;
if (!isHidden && pane && (chart.angular || chart.polar)) {
// Start and end angle options are
// given in degrees relative to top, while internal computations are
// in radians relative to right (like SVG).
// Y axis in polar charts
this.angleRad = (options.angle || 0) * Math.PI / 180;
// Gauges
this.startAngleRad = (paneOptions.startAngle - 90) * Math.PI / 180;
this.endAngleRad = (
pick(paneOptions.endAngle, paneOptions.startAngle + 360) - 90
) * Math.PI / 180; // Gauges
this.offset = options.offset || 0;
}
});
// Wrap auto label align to avoid setting axis-wide rotation on radial axes
// (#4920)
addEvent(Axis, 'autoLabelAlign', function (e) {
if (this.isRadial) {
e.align = undefined;
e.preventDefault();
}
});
// Add special cases within the Tick class' methods for radial axes.
addEvent(Tick, 'afterGetPosition', function (e) {
if (this.axis.getPosition) {
extend(e.pos, this.axis.getPosition(this.pos));
}
});
// Find the center position of the label based on the distance option.
addEvent(Tick, 'afterGetLabelPosition', function (e) {
var axis = this.axis,
label = this.label,
labelOptions = axis.options.labels,
optionsY = labelOptions.y,
ret,
centerSlot = 20, // 20 degrees to each side at the top and bottom
align = labelOptions.align,
angle = (
(axis.translate(this.pos) + axis.startAngleRad + Math.PI / 2) /
Math.PI * 180
) % 360;
if (axis.isRadial) { // Both X and Y axes in a polar chart
ret = axis.getPosition(this.pos, (axis.center[2] / 2) +
pick(labelOptions.distance, -25));
// Automatically rotated
if (labelOptions.rotation === 'auto') {
label.attr({
rotation: angle
});
// Vertically centered
} else if (optionsY === null) {
optionsY = (
axis.chart.renderer
.fontMetrics(label.styles && label.styles.fontSize).b -
label.getBBox().height / 2
);
}
// Automatic alignment
if (align === null) {
if (axis.isCircular) { // Y axis
if (
this.label.getBBox().width >
axis.len * axis.tickInterval / (axis.max - axis.min)
) { // #3506
centerSlot = 0;
}
if (angle > centerSlot && angle < 180 - centerSlot) {
align = 'left'; // right hemisphere
} else if (
angle > 180 + centerSlot &&
angle < 360 - centerSlot
) {
align = 'right'; // left hemisphere
} else {
align = 'center'; // top or bottom
}
} else {
align = 'center';
}
label.attr({
align: align
});
}
e.pos.x = ret.x + labelOptions.x;
e.pos.y = ret.y + optionsY;
}
});
// Wrap the getMarkPath function to return the path of the radial marker
wrap(tickProto, 'getMarkPath', function (
proceed,
x,
y,
tickLength,
tickWidth,
horiz,
renderer
) {
var axis = this.axis,
endPoint,
ret;
if (axis.isRadial) {
endPoint = axis.getPosition(
this.pos,
axis.center[2] / 2 + tickLength
);
ret = [
'M',
x,
y,
'L',
endPoint.x,
endPoint.y
];
} else {
ret = proceed.call(
this,
x,
y,
tickLength,
tickWidth,
horiz,
renderer
);
}
return ret;
});