@dimanoid/ngx-dm-tour
Version:
32 lines • 3.71 kB
JavaScript
/**
* @fileoverview added by tsickle
* Generated from: lib/utils/elems.ts
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* @param {?} elem
* @return {?}
*/
export function isElemVisible(elem) {
if (!(!!elem && !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length))) {
return false;
}
var _a = elem.getBoundingClientRect(), top = _a.top, left = _a.left, height = _a.height, width = _a.width;
/** @type {?} */
var el = elem.parentNode;
do {
/** @type {?} */
var rect = el.getBoundingClientRect();
if (rect.height > 0 && rect.width > 0) {
if ((top <= rect.bottom === false)
|| ((top + height) <= rect.top)
|| (left <= rect.right === false)
|| ((left + width) <= rect.left)) {
return false;
}
}
el = el.parentNode;
} while (el != document.body);
return top <= document.documentElement.clientHeight && left <= document.documentElement.clientWidth;
}
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