| 1 | {"version":3,"file":"previewImage.js","sources":["../../../../src/api/media/image/previewImage.ts"],"sourcesContent":["import Taro from '@tarojs/api'\nimport { SwiperProps } from '@tarojs/components'\nimport { defineCustomElement as defineCustomElementTaroSwiperCore } from '@tarojs/components/dist/components/taro-swiper-core'\nimport { defineCustomElement as defineCustomElementTaroSwiperItemCore } from '@tarojs/components/dist/components/taro-swiper-item-core'\nimport { isFunction } from '@tarojs/shared'\n\nimport { shouldBeObject } from '../../../utils'\nimport { MethodHandler } from '../../../utils/handler'\n\n/**\n * previewImage api基于开源的React组件[react-wx-images-viewer](https://github.com/react-ld/react-wx-images-viewer)开发，感谢！\n */\n\n/**\n * 在新页面中全屏预览图片。预览的过程中用户可以进行保存图片、发送给朋友等操作。\n */\nexport const previewImage: typeof Taro.previewImage = async (options) => {\n if (USE_HTML_COMPONENTS) {\n // TODO 改为通过 window.__taroAppConfig 获取配置的 Swiper 插件创建节点\n defineCustomElementTaroSwiperCore()\n defineCustomElementTaroSwiperItemCore()\n }\n function loadImage (url: string, loadFail: typeof fail): Promise<Node> {\n return new Promise((resolve) => {\n const item = document.createElement('taro-swiper-item-core')\n item.style.cssText = 'display:flex;align-items:start;justify-content:center;overflow-y:scroll;'\n const image = new Image()\n image.style.maxWidth = '100%'\n image.src = url\n const div = document.createElement('div')\n div.classList.add('swiper-zoom-container')\n div.style.cssText = 'display:flex;align-items:center;justify-content:center;max-width:100%;min-height:100%;'\n div.appendChild(image)\n item.appendChild(div)\n // Note: 等待图片加载完后返回，会导致轮播被卡住\n resolve(item)\n if (isFunction(loadFail)) {\n image.addEventListener('error', (err) => {\n loadFail({ errMsg: err.message })\n })\n }\n })\n }\n\n // options must be an Object\n const isObject = shouldBeObject(options)\n if (!isObject.flag) {\n const res = { errMsg: `previewImage:fail ${isObject.msg}` }\n console.error(res.errMsg)\n return Promise.reject(res)\n }\n\n const { urls = [], current = '', success, fail, complete } = options\n const handle = new MethodHandler({ name: 'previewImage', success, fail, complete })\n const container = document.createElement('div')\n container.classList.add('preview-image')\n container.style.cssText = 'position:fixed;top:0;left:0;z-index:1050;width:100%;height:100%;overflow:hidden;outline:0;background-color:#111;'\n container.addEventListener('click', () => {\n container.remove()\n })\n\n const swiper: HTMLElement & Omit<SwiperProps, 'style' | 'children'> = document.createElement('taro-swiper-core')\n // @ts-ignore\n swiper.full = true\n // @ts-ignore\n swiper.zoom = true\n\n let children: Node[] = []\n try {\n children = await Promise.all(\n urls.map(e => loadImage(e, fail))\n )\n } catch (error) {\n return handle.fail({\n errMsg: error\n })\n }\n\n for (let i = 0; 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