| 提交 | 用户 | age | ||
| 2f6253 | 1 | import { upperFirst } from 'lodash-es'; |
| 陈 | 2 | |
| 3 | export interface ViewportOffsetResult { | |
| 4 | left: number; | |
| 5 | top: number; | |
| 6 | right: number; | |
| 7 | bottom: number; | |
| 8 | rightIncludeBody: number; | |
| 9 | bottomIncludeBody: number; | |
| 10 | } | |
| 11 | ||
| 12 | export function getBoundingClientRect(element: Element): DOMRect | number { | |
| 13 | if (!element || !element.getBoundingClientRect) { | |
| 14 | return 0; | |
| 15 | } | |
| 16 | return element.getBoundingClientRect(); | |
| 17 | } | |
| bdce84 | 18 | |
| 2f6253 | 19 | const trim = function (string: string) { |
| 陈 | 20 | return (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, ''); |
| 21 | }; | |
| bdce84 | 22 | |
| 2f6253 | 23 | /* istanbul ignore next */ |
| 陈 | 24 | export function hasClass(el: Element, cls: string) { |
| 25 | if (!el || !cls) return false; | |
| 26 | if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.'); | |
| 27 | if (el.classList) { | |
| 28 | return el.classList.contains(cls); | |
| 29 | } else { | |
| 30 | return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1; | |
| 31 | } | |
| 32 | } | |
| bdce84 | 33 | |
| 2f6253 | 34 | /* istanbul ignore next */ |
| 陈 | 35 | export function addClass(el: Element, cls: string) { |
| 36 | if (!el) return; | |
| 37 | let curClass = el.className; | |
| 38 | const classes = (cls || '').split(' '); | |
| 39 | ||
| 40 | for (let i = 0, j = classes.length; i < j; i++) { | |
| 41 | const clsName = classes[i]; | |
| 42 | if (!clsName) continue; | |
| 43 | ||
| 44 | if (el.classList) { | |
| 45 | el.classList.add(clsName); | |
| 46 | } else if (!hasClass(el, clsName)) { | |
| 47 | curClass += ' ' + clsName; | |
| 48 | } | |
| 49 | } | |
| 50 | if (!el.classList) { | |
| 51 | el.className = curClass; | |
| 52 | } | |
| 53 | } | |
| 54 | ||
| 55 | /* istanbul ignore next */ | |
| 56 | export function removeClass(el: Element, cls: string) { | |
| 57 | if (!el || !cls) return; | |
| 58 | const classes = cls.split(' '); | |
| 59 | let curClass = ' ' + el.className + ' '; | |
| 60 | ||
| 61 | for (let i = 0, j = classes.length; i < j; i++) { | |
| 62 | const clsName = classes[i]; | |
| 63 | if (!clsName) continue; | |
| 64 | ||
| 65 | if (el.classList) { | |
| 66 | el.classList.remove(clsName); | |
| 67 | } else if (hasClass(el, clsName)) { | |
| 68 | curClass = curClass.replace(' ' + clsName + ' ', ' '); | |
| 69 | } | |
| 70 | } | |
| 71 | if (!el.classList) { | |
| 72 | el.className = trim(curClass); | |
| 73 | } | |
| 74 | } | |
| 75 | /** | |
| 76 | * 获取当前元素的left、top偏移 | |
| 77 | * left：元素最左侧距离文档左侧的距离 | |
| 78 | * top:元素最顶端距离文档顶端的距离 | |
| 79 | * right:元素最右侧距离文档右侧的距离 | |
| 80 | * bottom：元素最底端距离文档底端的距离 | |
| 81 | * rightIncludeBody：元素最左侧距离文档右侧的距离 | |
| 82 | * bottomIncludeBody：元素最底端距离文档最底部的距离 | |
| 83 | * | |
| 84 | * @description: | |
| 85 | */ | |
| 86 | export function getViewportOffset(element: Element): ViewportOffsetResult { | |
| 87 | const doc = document.documentElement; | |
| 88 | ||
| 89 | const docScrollLeft = doc.scrollLeft; | |
| 90 | const docScrollTop = doc.scrollTop; | |
| 91 | const docClientLeft = doc.clientLeft; | |
| 92 | const docClientTop = doc.clientTop; | |
| 93 | ||
| 94 | const pageXOffset = window.pageXOffset; | |
| 95 | const pageYOffset = window.pageYOffset; | |
| 96 | ||
| 97 | const box = getBoundingClientRect(element); | |
| 98 | ||
| 99 | const { left: retLeft, top: rectTop, width: rectWidth, height: rectHeight } = box as DOMRect; | |
| 100 | ||
| 101 | const scrollLeft = (pageXOffset || docScrollLeft) - (docClientLeft || 0); | |
| 102 | const scrollTop = (pageYOffset || docScrollTop) - (docClientTop || 0); | |
| 103 | const offsetLeft = retLeft + pageXOffset; | |
| 104 | const offsetTop = rectTop + pageYOffset; | |
| 105 | ||
| 106 | const left = offsetLeft - scrollLeft; | |
| 107 | const top = offsetTop - scrollTop; | |
| 108 | ||
| 109 | const clientWidth = window.document.documentElement.clientWidth; | |
| 110 | const clientHeight = window.document.documentElement.clientHeight; | |
| 111 | return { | |
| 112 | left: left, | |
| 113 | top: top, | |
| 114 | right: clientWidth - rectWidth - left, | |
| 115 | bottom: clientHeight - rectHeight - top, | |
| 116 | rightIncludeBody: clientWidth - left, | |
| 117 | bottomIncludeBody: clientHeight - top, | |
| 118 | }; | |
| 119 | } | |
| 120 | ||
| 121 | export function hackCss(attr: string, value: string) { | |
| 122 | const prefix: string[] = ['webkit', 'Moz', 'ms', 'OT']; | |
| 123 | ||
| 124 | const styleObj: any = {}; | |
| 125 | prefix.forEach((item) => { | |
| 126 | styleObj[`${item}${upperFirst(attr)}`] = value; | |
| 127 | }); | |
| 128 | return { | |
| 129 | ...styleObj, | |
| 130 | [attr]: value, | |
| 131 | }; | |
| 132 | } | |
| 133 | ||
| 134 | /* istanbul ignore next */ | |
| 144ab5 | 135 | export function on( |
| bdce84 | 136 | element: Element | HTMLElement | Document | Window, |
| 2f6253 | 137 | event: string, |
| 陈 | 138 | handler: EventListenerOrEventListenerObject |
| 139 | ): void { | |
| 140 | if (element && event && handler) { | |
| 141 | element.addEventListener(event, handler, false); | |
| 142 | } | |
| 144ab5 | 143 | } |
| 2f6253 | 144 | |
| 陈 | 145 | /* istanbul ignore next */ |
| 144ab5 | 146 | export function off( |
| bdce84 | 147 | element: Element | HTMLElement | Document | Window, |
| 2f6253 | 148 | event: string, |
| 陈 | 149 | handler: Fn |
| 150 | ): void { | |
| 151 | if (element && event && handler) { | |
| 152 | element.removeEventListener(event, handler, false); | |
| 153 | } | |
| 144ab5 | 154 | } |
| bdce84 | 155 | |
| V | 156 | /* istanbul ignore next */ |
| 144ab5 | 157 | export function once(el: HTMLElement, event: string, fn: EventListener): void { |
| bdce84 | 158 | const listener = function (this: any, ...args: unknown[]) { |
| V | 159 | if (fn) { |
| 160 | fn.apply(this, args); | |
| 161 | } | |
| 162 | off(el, event, listener); | |
| 163 | }; | |
| 164 | on(el, event, listener); | |
| 144ab5 | 165 | } |
