highcharts
Version:
JavaScript charting framework
144 lines (143 loc) • 4 kB
JavaScript
/* *
*
* (c) 2010-2025 Torstein Honsi
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
;
import H from '../Globals.js';
const { isTouchDevice } = H;
import U from '../Utilities.js';
const { addEvent, correctFloat, defined, isNumber, pick } = U;
/* *
*
* Functions
*
* */
/**
* @private
*/
function onAxisInit() {
const axis = this;
if (!axis.navigatorAxis) {
axis.navigatorAxis = new NavigatorAxisAdditions(axis);
}
}
/**
* For Stock charts, override selection zooming with some special features
* because X axis zooming is already allowed by the Navigator and Range
* selector.
* @private
*/
function onAxisSetExtremes(e) {
const axis = this, chart = axis.chart, chartOptions = chart.options, navigator = chartOptions.navigator, navigatorAxis = axis.navigatorAxis, pinchType = chart.zooming.pinchType, rangeSelector = chartOptions.rangeSelector, zoomType = chart.zooming.type;
let zoomed;
if (axis.isXAxis &&
(navigator?.enabled || rangeSelector?.enabled)) {
// For y only zooming, ignore the X axis completely
if (zoomType === 'y' && e.trigger === 'zoom') {
zoomed = false;
// For xy zooming, record the state of the zoom before zoom selection,
// then when the reset button is pressed, revert to this state. This
// should apply only if the chart is initialized with a range (#6612),
// otherwise zoom all the way out.
}
else if (((e.trigger === 'zoom' && zoomType === 'xy') ||
(isTouchDevice && pinchType === 'xy')) &&
axis.options.range) {
const previousZoom = navigatorAxis.previousZoom;
// Minimum defined, zooming in
if (defined(e.min)) {
navigatorAxis.previousZoom = [axis.min, axis.max];
// Minimum undefined, resetting zoom
}
else if (previousZoom) {
e.min = previousZoom[0];
e.max = previousZoom[1];
navigatorAxis.previousZoom = void 0;
}
}
}
if (typeof zoomed !== 'undefined') {
e.preventDefault();
}
}
/* *
*
* Class
*
* */
/**
* @private
* @class
*/
class NavigatorAxisAdditions {
/* *
*
* Static Functions
*
* */
/**
* @private
*/
static compose(AxisClass) {
if (!AxisClass.keepProps.includes('navigatorAxis')) {
AxisClass.keepProps.push('navigatorAxis');
addEvent(AxisClass, 'init', onAxisInit);
addEvent(AxisClass, 'setExtremes', onAxisSetExtremes);
}
}
/* *
*
* Constructors
*
* */
constructor(axis) {
this.axis = axis;
}
/* *
*
* Functions
*
* */
/**
* @private
*/
destroy() {
this.axis = void 0;
}
/**
* Add logic to normalize the zoomed range in order to preserve the pressed
* state of range selector buttons
*
* @private
* @function Highcharts.Axis#toFixedRange
*/
toFixedRange(pxMin, pxMax, fixedMin, fixedMax) {
const axis = this.axis, halfPointRange = (axis.pointRange || 0) / 2;
let newMin = pick(fixedMin, axis.translate(pxMin, true, !axis.horiz)), newMax = pick(fixedMax, axis.translate(pxMax, true, !axis.horiz));
// Add/remove half point range to/from the extremes (#1172)
if (!defined(fixedMin)) {
newMin = correctFloat(newMin + halfPointRange);
}
if (!defined(fixedMax)) {
newMax = correctFloat(newMax - halfPointRange);
}
if (!isNumber(newMin) || !isNumber(newMax)) { // #1195, #7411
newMin = newMax = void 0;
}
return {
min: newMin,
max: newMax
};
}
}
/* *
*
* Default Export
*
* */
export default NavigatorAxisAdditions;