highcharts
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JavaScript charting framework
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JavaScript
/* *
*
* (c) 2010-2021 Torstein Honsi
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
import H from '../../Globals.js';
import SVGElement from '../SVG/SVGElement.js';
import U from '../../Utilities.js';
var css = U.css, defined = U.defined, extend = U.extend, pick = U.pick, pInt = U.pInt;
/**
* Element placebo
* @private
*/
var HTMLElement = SVGElement;
var isFirefox = H.isFirefox;
/* eslint-disable valid-jsdoc */
// Extend SvgElement for useHTML option.
extend(HTMLElement.prototype, /** @lends SVGElement.prototype */ {
/**
* Apply CSS to HTML elements. This is used in text within SVG rendering and
* by the VML renderer
*
* @private
* @function Highcharts.SVGElement#htmlCss
*
* @param {Highcharts.CSSObject} styles
*
* @return {Highcharts.SVGElement}
*/
htmlCss: function (styles) {
var wrapper = this, element = wrapper.element,
// When setting or unsetting the width style, we need to update
// transform (#8809)
isSettingWidth = (element.tagName === 'SPAN' &&
styles &&
'width' in styles), textWidth = pick(isSettingWidth && styles.width, void 0), doTransform;
if (isSettingWidth) {
delete styles.width;
wrapper.textWidth = textWidth;
doTransform = true;
}
if (styles && styles.textOverflow === 'ellipsis') {
styles.whiteSpace = 'nowrap';
styles.overflow = 'hidden';
}
wrapper.styles = extend(wrapper.styles, styles);
css(wrapper.element, styles);
// Now that all styles are applied, to the transform
if (doTransform) {
wrapper.htmlUpdateTransform();
}
return wrapper;
},
/**
* VML and useHTML method for calculating the bounding box based on offsets.
*
* @private
* @function Highcharts.SVGElement#htmlGetBBox
*
* @param {boolean} refresh
* Whether to force a fresh value from the DOM or to use the cached
* value.
*
* @return {Highcharts.BBoxObject}
* A hash containing values for x, y, width and height.
*/
htmlGetBBox: function () {
var wrapper = this, element = wrapper.element;
return {
x: element.offsetLeft,
y: element.offsetTop,
width: element.offsetWidth,
height: element.offsetHeight
};
},
/**
* VML override private method to update elements based on internal
* properties based on SVG transform.
*
* @private
* @function Highcharts.SVGElement#htmlUpdateTransform
* @return {void}
*/
htmlUpdateTransform: function () {
// aligning non added elements is expensive
if (!this.added) {
this.alignOnAdd = true;
return;
}
var wrapper = this, renderer = wrapper.renderer, elem = wrapper.element, translateX = wrapper.translateX || 0, translateY = wrapper.translateY || 0, x = wrapper.x || 0, y = wrapper.y || 0, align = wrapper.textAlign || 'left', alignCorrection = {
left: 0, center: 0.5, right: 1
}[align], styles = wrapper.styles, whiteSpace = styles && styles.whiteSpace;
/**
* @private
* @return {number}
*/
function getTextPxLength() {
// Reset multiline/ellipsis in order to read width (#4928,
// #5417)
css(elem, {
width: '',
whiteSpace: whiteSpace || 'nowrap'
});
return elem.offsetWidth;
}
// apply translate
css(elem, {
marginLeft: translateX,
marginTop: translateY
});
if (!renderer.styledMode && wrapper.shadows) { // used in labels/tooltip
wrapper.shadows.forEach(function (shadow) {
css(shadow, {
marginLeft: translateX + 1,
marginTop: translateY + 1
});
});
}
// apply inversion
if (wrapper.inverted) { // wrapper is a group
[].forEach.call(elem.childNodes, function (child) {
renderer.invertChild(child, elem);
});
}
if (elem.tagName === 'SPAN') {
var rotation = wrapper.rotation, baseline, textWidth = wrapper.textWidth && pInt(wrapper.textWidth), currentTextTransform = [
rotation,
align,
elem.innerHTML,
wrapper.textWidth,
wrapper.textAlign
].join(',');
// Update textWidth. Use the memoized textPxLength if possible, to
// avoid the getTextPxLength function using elem.offsetWidth.
// Calling offsetWidth affects rendering time as it forces layout
// (#7656).
if (textWidth !== wrapper.oldTextWidth &&
((textWidth > wrapper.oldTextWidth) ||
(wrapper.textPxLength || getTextPxLength()) > textWidth) && (
// Only set the width if the text is able to word-wrap, or
// text-overflow is ellipsis (#9537)
/[ \-]/.test(elem.textContent || elem.innerText) ||
elem.style.textOverflow === 'ellipsis')) { // #983, #1254
css(elem, {
width: textWidth + 'px',
display: 'block',
whiteSpace: whiteSpace || 'normal' // #3331
});
wrapper.oldTextWidth = textWidth;
wrapper.hasBoxWidthChanged = true; // #8159
}
else {
wrapper.hasBoxWidthChanged = false; // #8159
}
// Do the calculations and DOM access only if properties changed
if (currentTextTransform !== wrapper.cTT) {
baseline = renderer.fontMetrics(elem.style.fontSize, elem).b;
// Renderer specific handling of span rotation, but only if we
// have something to update.
if (defined(rotation) &&
((rotation !== (wrapper.oldRotation || 0)) ||
(align !== wrapper.oldAlign))) {
wrapper.setSpanRotation(rotation, alignCorrection, baseline);
}
wrapper.getSpanCorrection(
// Avoid elem.offsetWidth if we can, it affects rendering
// time heavily (#7656)
((!defined(rotation) && wrapper.textPxLength) || // #7920
elem.offsetWidth), baseline, alignCorrection, rotation, align);
}
// apply position with correction
css(elem, {
left: (x + (wrapper.xCorr || 0)) + 'px',
top: (y + (wrapper.yCorr || 0)) + 'px'
});
// record current text transform
wrapper.cTT = currentTextTransform;
wrapper.oldRotation = rotation;
wrapper.oldAlign = align;
}
},
/**
* Set the rotation of an individual HTML span.
*
* @private
* @function Highcharts.SVGElement#setSpanRotation
* @param {number} rotation
* @param {number} alignCorrection
* @param {number} baseline
* @return {void}
*/
setSpanRotation: function (rotation, alignCorrection, baseline) {
var rotationStyle = {}, cssTransformKey = this.renderer.getTransformKey();
rotationStyle[cssTransformKey] = rotationStyle.transform =
'rotate(' + rotation + 'deg)';
rotationStyle[cssTransformKey + (isFirefox ? 'Origin' : '-origin')] =
rotationStyle.transformOrigin =
(alignCorrection * 100) + '% ' + baseline + 'px';
css(this.element, rotationStyle);
},
/**
* Get the correction in X and Y positioning as the element is rotated.
*
* @private
* @function Highcharts.SVGElement#getSpanCorrection
* @param {number} width
* @param {number} baseline
* @param {number} alignCorrection
* @return {void}
*/
getSpanCorrection: function (width, baseline, alignCorrection) {
this.xCorr = -width * alignCorrection;
this.yCorr = -baseline;
}
});
export default HTMLElement;