60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
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"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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exports.__esModule = true;
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exports.default = position;
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var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
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var _css = _interopRequireDefault(require("./css"));
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var _offset = _interopRequireDefault(require("./offset"));
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var _offsetParent = _interopRequireDefault(require("./offsetParent"));
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var _scrollLeft = _interopRequireDefault(require("./scrollLeft"));
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var _scrollTop = _interopRequireDefault(require("./scrollTop"));
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var nodeName = function nodeName(node) {
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return node.nodeName && node.nodeName.toLowerCase();
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};
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/**
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* Returns the relative position of a given element.
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*
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* @param node the element
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* @param offsetParent the offset parent
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*/
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function position(node, offsetParent) {
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var parentOffset = {
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top: 0,
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left: 0
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};
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var offset; // Fixed elements are offset from window (parentOffset = {top:0, left: 0},
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// because it is its only offset parent
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if ((0, _css.default)(node, 'position') === 'fixed') {
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offset = node.getBoundingClientRect();
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} else {
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var parent = offsetParent || (0, _offsetParent.default)(node);
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offset = (0, _offset.default)(node);
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if (nodeName(parent) !== 'html') parentOffset = (0, _offset.default)(parent);
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var borderTop = String((0, _css.default)(parent, 'borderTopWidth') || 0);
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parentOffset.top += parseInt(borderTop, 10) - (0, _scrollTop.default)(parent) || 0;
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var borderLeft = String((0, _css.default)(parent, 'borderLeftWidth') || 0);
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parentOffset.left += parseInt(borderLeft, 10) - (0, _scrollLeft.default)(parent) || 0;
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}
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var marginTop = String((0, _css.default)(node, 'marginTop') || 0);
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var marginLeft = String((0, _css.default)(node, 'marginLeft') || 0); // Subtract parent offsets and node margins
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return (0, _extends2.default)({}, offset, {
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top: offset.top - parentOffset.top - (parseInt(marginTop, 10) || 0),
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left: offset.left - parentOffset.left - (parseInt(marginLeft, 10) || 0)
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});
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}
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module.exports = exports["default"];
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