Function getBoundingClientRect

mods/spatial-navigation-polyfill.js:1556–1572

* Get the DOMRect of an element * @function getBoundingClientRect * @param {Node} element * @returns {DOMRect}

(element)

   * @returns {DOMRect}
   */
  function getBoundingClientRect(element) {
    // memoization
    let rect = mapOfBoundRect && mapOfBoundRect.get(element);
    if (!rect) {
      const boundingClientRect = element.getBoundingClientRect();
      rect = {
        top: Number(boundingClientRect.top.toFixed(2)),
        right: Number(boundingClientRect.right.toFixed(2)),
        bottom: Number(boundingClientRect.bottom.toFixed(2)),
        left: Number(boundingClientRect.left.toFixed(2)),
        width: Number(boundingClientRect.width.toFixed(2)),
        height: Number(boundingClientRect.height.toFixed(2))
      };
      mapOfBoundRect && mapOfBoundRect.set(element, rect);
    }
    return rect;
  }

  /**
   * Get the candidates which is fully inside the target element in visual