@nutui/nutui-react-taro
Version:
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
223 lines (222 loc) • 8.66 kB
JavaScript
import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
import { _ as _object_spread } from "@swc/helpers/_/_object_spread";
import { _ as _object_spread_props } from "@swc/helpers/_/_object_spread_props";
import { _ as _object_without_properties } from "@swc/helpers/_/_object_without_properties";
import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
import React, { useEffect, useRef, useImperativeHandle } from "react";
import classNames from "classnames";
import { View } from "@tarojs/components";
import { ComponentDefaults } from "../../utils/typings";
import { getRectInMultiPlatform } from "../../utils/taro/get-rect";
var defaultProps = _object_spread_props(_object_spread({}, ComponentDefaults), {
list: [],
interval: 500,
loop: true,
duration: 3000,
rows: 3,
gapY: 10
});
var classPrefix = "nut-barrage";
var InternalBarrage = function(props, ref) {
var _ref = _object_spread({}, defaultProps, props), className = _ref.className, interval = _ref.interval, loop = _ref.loop, list = _ref.list, duration = _ref.duration, rows = _ref.rows, gapY = _ref.gapY, restProps = _object_without_properties(_ref, [
"className",
"interval",
"loop",
"list",
"duration",
"rows",
"gapY"
]);
var barrageBody = useRef(null);
var barrageContainer = useRef(null);
var barrageCWidth = useRef(0);
var timer = useRef(0);
var domTimer = useRef(0);
var index = useRef(0);
var times = useRef([]);
var historyIndex = useRef(-1);
var classes = classNames(classPrefix, className);
useImperativeHandle(ref, function() {
return {
add: function(word) {
var _index = index.current % list.length;
if (!loop && index.current === list.length) {
list.splice(list.length, 0, word);
} else {
list.splice(_index, 0, word);
}
}
};
});
var getNodeWidth = function(node) {
var type = arguments.length > 1 && arguments[1] !== void 0 ? arguments[1] : 'width';
return _async_to_generator(function() {
var refe;
return _ts_generator(this, function(_state) {
switch(_state.label){
case 0:
if (!node) return [
3,
2
];
return [
4,
getRectInMultiPlatform(node)
];
case 1:
refe = _state.sent();
return [
2,
Math.ceil(type === 'height' ? refe.height : refe.width)
];
case 2:
return [
2,
0
];
}
});
})();
};
var clearDomTimeout = function() {
if (domTimer.current) {
clearTimeout(domTimer.current);
domTimer.current = 0;
}
};
useEffect(function() {
var init = function() {
return _async_to_generator(function() {
var _barrageBody_current;
return _ts_generator(this, function(_state) {
switch(_state.label){
case 0:
if (!barrageBody.current) return [
3,
2
];
return [
4,
getNodeWidth(barrageBody.current)
];
case 1:
barrageCWidth.current = _state.sent();
(_barrageBody_current = barrageBody.current) === null || _barrageBody_current === void 0 ? void 0 : _barrageBody_current.style.setProperty('--move-distance', "-".concat(barrageCWidth.current, "px"));
index.current = 0;
run();
_state.label = 2;
case 2:
return [
2
];
}
});
})();
};
domTimer.current = window.setTimeout(function() {
init();
}, 300);
return function() {
clearDomTimeout();
};
}, [
list
]);
var run = function() {
clearTimeout(timer.current);
var intervalCache = interval;
var _index = (loop ? index.current % list.length : index.current) % rows;
var result = times.current[_index] - rows * interval;
if (result > 0) {
intervalCache += result;
}
timer.current = window.setTimeout(function() {
play();
}, intervalCache);
};
var setStyle = function(el, currentIndex) {
return _async_to_generator(function() {
var refe, width, height, elScrollDuration, error;
return _ts_generator(this, function(_state) {
switch(_state.label){
case 0:
_state.trys.push([
0,
3,
,
4
]);
if (!el) return [
3,
2
];
return [
4,
getRectInMultiPlatform(el)
];
case 1:
refe = _state.sent();
width = refe.width;
height = refe.height;
el.classList.add('move');
elScrollDuration = Math.round(width / barrageCWidth.current * duration);
times.current[currentIndex] = elScrollDuration;
el.style.animationDuration = "".concat(duration + elScrollDuration, "ms");
el.style.top = "".concat(currentIndex * (height + gapY) + 20, "px");
el.style.width = "".concat(width, "px");
_state.label = 2;
case 2:
return [
3,
4
];
case 3:
error = _state.sent();
console.log('异常自动流转到下一个', error);
barrageContainer.current.removeChild(el);
return [
3,
4
];
case 4:
el.addEventListener('animationend', function() {
;
barrageContainer.current.removeChild(el);
});
return [
2
];
}
});
})();
};
var play = function() {
if (!loop && index.current >= list.length) {
return;
}
var _index = loop ? index.current % list.length : index.current;
var el = document.createElement("View");
var currentIndex = _index % rows;
if (currentIndex <= historyIndex.current || historyIndex.current === 3 && currentIndex !== 0 || Math.abs(currentIndex - historyIndex.current) !== 1) {
currentIndex = historyIndex.current + 1 >= rows ? 0 : historyIndex.current + 1;
}
historyIndex.current = currentIndex;
el.innerHTML = list[_index];
barrageContainer.current.appendChild(el);
el.classList.add('barrage-item');
requestAnimationFrame(function() {
return setStyle(el, currentIndex);
});
index.current++;
run();
};
return /*#__PURE__*/ React.createElement(View, _object_spread({
className: classes,
ref: barrageBody
}, restProps), /*#__PURE__*/ React.createElement(View, {
ref: barrageContainer,
className: "bContainer"
}));
};
export var Barrage = /*#__PURE__*/ React.forwardRef(InternalBarrage);
Barrage.displayName = 'NutBarrage';