bc518174
 王天杨
提交两个项目文件
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"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
exports.__esModule = true;
exports.default = position;
var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
var _css = _interopRequireDefault(require("./css"));
var _offset = _interopRequireDefault(require("./offset"));
var _offsetParent = _interopRequireDefault(require("./offsetParent"));
var _scrollLeft = _interopRequireDefault(require("./scrollLeft"));
var _scrollTop = _interopRequireDefault(require("./scrollTop"));
var nodeName = function nodeName(node) {
return node.nodeName && node.nodeName.toLowerCase();
};
/**
* Returns the relative position of a given element.
*
* @param node the element
* @param offsetParent the offset parent
*/
function position(node, offsetParent) {
var parentOffset = {
top: 0,
left: 0
};
var offset; // Fixed elements are offset from window (parentOffset = {top:0, left: 0},
// because it is its only offset parent
if ((0, _css.default)(node, 'position') === 'fixed') {
offset = node.getBoundingClientRect();
} else {
var parent = offsetParent || (0, _offsetParent.default)(node);
offset = (0, _offset.default)(node);
if (nodeName(parent) !== 'html') parentOffset = (0, _offset.default)(parent);
var borderTop = String((0, _css.default)(parent, 'borderTopWidth') || 0);
parentOffset.top += parseInt(borderTop, 10) - (0, _scrollTop.default)(parent) || 0;
var borderLeft = String((0, _css.default)(parent, 'borderLeftWidth') || 0);
parentOffset.left += parseInt(borderLeft, 10) - (0, _scrollLeft.default)(parent) || 0;
}
var marginTop = String((0, _css.default)(node, 'marginTop') || 0);
var marginLeft = String((0, _css.default)(node, 'marginLeft') || 0); // Subtract parent offsets and node margins
return (0, _extends2.default)({}, offset, {
top: offset.top - parentOffset.top - (parseInt(marginTop, 10) || 0),
left: offset.left - parentOffset.left - (parseInt(marginLeft, 10) || 0)
});
}
module.exports = exports["default"];
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