import { viewport } from "../enums.js"; import getViewportRect from "./getViewportRect.js"; import getDocumentRect from "./getDocumentRect.js"; import listScrollParents from "./listScrollParents.js"; import getOffsetParent from "./getOffsetParent.js"; import getDocumentElement from "./getDocumentElement.js"; import getComputedStyle from "./getComputedStyle.js"; import { isElement, isHTMLElement } from "./instanceOf.js"; import getBoundingClientRect from "./getBoundingClientRect.js"; import getParentNode from "./getParentNode.js"; import contains from "./contains.js"; import getNodeName from "./getNodeName.js"; import rectToClientRect from "../utils/rectToClientRect.js"; import { max, min } from "../utils/math.js"; function getInnerBoundingClientRect(element, strategy) { var rect = getBoundingClientRect(element, false, strategy === 'fixed'); rect.top = rect.top + element.clientTop; rect.left = rect.left + element.clientLeft; rect.bottom = rect.top + element.clientHeight; rect.right = rect.left + element.clientWidth; rect.width = element.clientWidth; rect.height = element.clientHeight; rect.x = rect.left; rect.y = rect.top; return rect; } function getClientRectFromMixedType(element, clippingParent, strategy) { return clippingParent === viewport ? rectToClientRect(getViewportRect(element, strategy)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent, strategy) : rectToClientRect(getDocumentRect(getDocumentElement(element))); } // A "clipping parent" is an overflowable container with the characteristic of // clipping (or hiding) overflowing elements with a position different from // `initial` function getClippingParents(element) { var clippingParents = listScrollParents(getParentNode(element)); var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0; var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element; if (!isElement(clipperElement)) { return []; } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414 return clippingParents.filter(function (clippingParent) { return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body'; }); } // Gets the maximum area that the element is visible in due to any number of // clipping parents export default function getClippingRect(element, boundary, rootBoundary, strategy) { var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary); var clippingParents = [].concat(mainClippingParents, [rootBoundary]); var firstClippingParent = clippingParents[0]; var clippingRect = clippingParents.reduce(function (accRect, clippingParent) { var rect = getClientRectFromMixedType(element, clippingParent, strategy); accRect.top = max(rect.top, accRect.top); accRect.right = min(rect.right, accRect.right); accRect.bottom = min(rect.bottom, accRect.bottom); accRect.left = max(rect.left, accRect.left); return accRect; }, getClientRectFromMixedType(element, firstClippingParent, strategy)); clippingRect.width = clippingRect.right - clippingRect.left; clippingRect.height = clippingRect.bottom - clippingRect.top; clippingRect.x = clippingRect.left; clippingRect.y = clippingRect.top; return clippingRect; }