Function positionModal

shepherd.js/src/components/shepherd-modal.ts:87–153

(
    modalOverlayOpeningPadding = 0,
    modalOverlayOpeningRadius: ModalRadiusType = 0,
    modalOverlayOpeningXOffset = 0,
    modalOverlayOpeningYOffset = 0,
    scrollParent?: HTMLElement | null,
    targetElement?: HTMLElement | null,
    extraHighlights?: HTMLElement[]
  )

  }

  function positionModal(
    modalOverlayOpeningPadding = 0,
    modalOverlayOpeningRadius: ModalRadiusType = 0,
    modalOverlayOpeningXOffset = 0,
    modalOverlayOpeningYOffset = 0,
    scrollParent?: HTMLElement | null,
    targetElement?: HTMLElement | null,
    extraHighlights?: HTMLElement[]
  ) {
    if (targetElement) {
      const elementsToHighlight = [targetElement, ...(extraHighlights || [])];
      const newOpenings: OpeningProperty[] = [];

      for (const el of elementsToHighlight) {
        if (!el) continue;

        // Skip duplicate elements
        if (
          elementsToHighlight.indexOf(el) !==
          elementsToHighlight.lastIndexOf(el)
        ) {
          continue;
        }

        const { y, height } = _getVisibleHeight(el, scrollParent);
        const { x, width, left } = el.getBoundingClientRect();

        // Check if the element is contained by another element.
        // Use _getVisibleHeight for otherElement too so both sides
        // compare scroll-clipped geometry on the y-axis.
        const isContained = elementsToHighlight.some((otherElement) => {
          if (otherElement === el) return false;
          const otherRect = otherElement.getBoundingClientRect();
          const { y: otherY, height: otherHeight } = _getVisibleHeight(
            otherElement,
            scrollParent
          );
          return (
            x >= otherRect.left &&
            x + width <= otherRect.left + otherRect.width &&
            y >= otherY &&
            y + height <= otherY + otherHeight
          );
        });

        if (isContained) continue;

        newOpenings.push({
          width: width + modalOverlayOpeningPadding * 2,
          height: height + modalOverlayOpeningPadding * 2,
          x:
            (x || left) +
            modalOverlayOpeningXOffset -
            modalOverlayOpeningPadding,
          y: y + modalOverlayOpeningYOffset - modalOverlayOpeningPadding,
          r: modalOverlayOpeningRadius as OpeningProperty['r']
        });
      }