@nutui/nutui-react/dist/cjs/packages/drag/drag.js

京东风格的轻量级移动端 React 组件库，支持一套代码生成 H5 和小程序

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "Drag", {
    enumerable: true,
    get: function() {
        return Drag;
    }
});
var _interop_require_wildcard = require("@swc/helpers/_/_interop_require_wildcard");
var _object_spread = require("@swc/helpers/_/_object_spread");
var _object_spread_props = require("@swc/helpers/_/_object_spread_props");
var _object_without_properties = require("@swc/helpers/_/_object_without_properties");
var _sliced_to_array = require("@swc/helpers/_/_sliced_to_array");
var _react = /*#__PURE__*/ _interop_require_wildcard._(require("react"));
var _react1 = require("@use-gesture/react");
var _web = require("@react-spring/web");
var _typings = require("../../utils/typings");
var defaultProps = (0, _object_spread_props._)((0, _object_spread._)({}, _typings.ComponentDefaults), {
    attract: false,
    direction: undefined,
    boundary: {
        top: 0,
        left: 0,
        right: 0,
        bottom: 0
    }
});
var Drag = function Drag(props) {
    var _ref = (0, _object_spread._)({}, defaultProps, props), attract = _ref.attract, direction = _ref.direction, boundary = _ref.boundary, onDrag = _ref.onDrag, onDragStart = _ref.onDragStart, onDragEnd = _ref.onDragEnd, children = _ref.children, className = _ref.className, style = _ref.style, reset = (0, _object_without_properties._)(_ref, [
        "attract",
        "direction",
        "boundary",
        "onDrag",
        "onDragStart",
        "onDragEnd",
        "children",
        "className",
        "style"
    ]);
    var classPrefix = 'nut-drag';
    var _useState = (0, _sliced_to_array._)((0, _react.useState)(boundary), 2), boundaryState = _useState[0], setBoundaryState = _useState[1];
    var myDrag = (0, _react.useRef)(null);
    var _useSpring = (0, _sliced_to_array._)((0, _web.useSpring)(function() {
        return {
            x: 0,
            y: 0
        };
    }), 2), currstyle = _useSpring[0], api = _useSpring[1];
    var middleLine = (0, _react.useRef)(0);
    var getInfo = function getInfo() {
        var el = myDrag.current;
        if (el) {
            var offsetTop = el.offsetTop, offsetLeft = el.offsetLeft;
            var _el_querySelector = el.querySelector(".".concat(classPrefix, "-inner")), offsetWidth = _el_querySelector.offsetWidth, offsetHeight = _el_querySelector.offsetHeight;
            var _document_documentElement = document.documentElement, clientWidth = _document_documentElement.clientWidth, clientHeight = _document_documentElement.clientHeight;
            var top = boundary.top, left = boundary.left, bottom = boundary.bottom, right = boundary.right;
            setBoundaryState({
                top: -offsetTop + top,
                left: -offsetLeft + left,
                bottom: clientHeight - offsetHeight - offsetTop - bottom,
                right: clientWidth - offsetWidth - offsetLeft - right
            });
            middleLine.current = clientWidth - offsetWidth - offsetLeft - (clientWidth - offsetWidth) / 2;
        }
    };
    var bind = (0, _react1.useDrag)(function(state) {
        var down = state.down, last = state.last, _state_offset = (0, _sliced_to_array._)(state.offset, 2), x = _state_offset[0], y = _state_offset[1], first = state.first;
        first && (onDragStart === null || onDragStart === void 0 ? void 0 : onDragStart());
        onDrag === null || onDrag === void 0 ? void 0 : onDrag({
            offset: [
                x,
                y
            ]
        });
        last && (onDragEnd === null || onDragEnd === void 0 ? void 0 : onDragEnd({
            offset: [
                x,
                y
            ]
        }));
        api.start({
            x: x,
            y: y,
            immediate: down
        });
        if (last) {
            if (direction !== 'y' && attract) {
                if (x < middleLine.current) {
                    api.start({
                        x: boundaryState.left,
                        y: y,
                        immediate: down
                    });
                } else {
                    api.start({
                        x: boundaryState.right,
                        y: y,
                        immediate: down
                    });
                }
            }
        }
    }, {
        from: function from() {
            return [
                currstyle.x.get(),
                currstyle.y.get()
            ];
        },
        axis: direction,
        bounds: boundaryState
    });
    (0, _react.useEffect)(function() {
        getInfo();
    }, [
        myDrag
    ]);
    return /*#__PURE__*/ _react.default.createElement("div", (0, _object_spread_props._)((0, _object_spread._)({
        style: style,
        className: "".concat(classPrefix, " ").concat(className)
    }, reset), {
        ref: myDrag
    }), /*#__PURE__*/ _react.default.createElement(_web.animated.div, (0, _object_spread_props._)((0, _object_spread._)({
        style: currstyle
    }, bind()), {
        className: "".concat(classPrefix, "-inner")
    }), children));
};
Drag.displayName = 'NutDrag';