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@ophiuchus/image-preview

v1.0.1

Published

### 介绍

Downloads

13

Readme

ImagePreview 图片预览

介绍

图片放大预览,支持函数调用和组件调用两种方式。

函数调用

ImagePreview 是一个函数,调用函数后会直接在页面中展示图片预览界面。

import ImagePreview from '@ophiuchus/image-preview';

ImagePreview([
  'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
  'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
]);

组件调用

通过组件调用 ImagePreview 时,可以通过下面的方式进行注册。

import Vue from 'vue';
import ImagePreview from '@ophiuchus/image-preview';

// 全局注册
Vue.use(ImagePreview);

// 局部注册
export default {
  components: {
    [ImagePreview.Component.name]: ImagePreview.Component,
  },
};

代码演示

基础用法

直接传入图片数组,即可展示图片预览。

ImagePreview([
  'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
  'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
  'https://img4.tuhu.org/D3n023kFjjgjYzz87qdh4g_w1600_h1331.jpeg',
  'https://img4.tuhu.org/7QAkLaPgM5ZrueoMigS8ng_w1277_h1600.jpeg',
]);

指定初始位置

ImagePreview 支持传入配置对象,并通过 startPosition 选项指定图片的初始位置(索引值)。

ImagePreview({
  images: [
    'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
    'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
    'https://img4.tuhu.org/D3n023kFjjgjYzz87qdh4g_w1600_h1331.jpeg',
    'https://img4.tuhu.org/7QAkLaPgM5ZrueoMigS8ng_w1277_h1600.jpeg',
  ],
  startPosition: 1,
});

展示关闭按钮

设置 closeable 属性后,会在弹出层的右上角显示关闭图标,并且可以通过 close-icon 属性自定义图标,使用close-icon-position 属性可以自定义图标位置。

ImagePreview({
  images: [
    'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
    'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
    'https://img4.tuhu.org/D3n023kFjjgjYzz87qdh4g_w1600_h1331.jpeg',
    'https://img4.tuhu.org/7QAkLaPgM5ZrueoMigS8ng_w1277_h1600.jpeg',
  ],
  closeable: true,
});

监听关闭事件

通过 onClose 选项监听图片预览的关闭事件。

import Toast  from '@ophiuchus/toast';

ImagePreview({
  images: [
    'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
    'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
    'https://img4.tuhu.org/D3n023kFjjgjYzz87qdh4g_w1600_h1331.jpeg',
    'https://img4.tuhu.org/7QAkLaPgM5ZrueoMigS8ng_w1277_h1600.jpeg',
  ],
  onClose() {
    Toast('关闭');
  },
});

异步关闭

通过 asyncClose 属性可以开启异步关闭,开启后异步关闭后,只能通过实例上的 close 方法关闭图片预览。

const instance = ImagePreview({
  images: [
    'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
    'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
    'https://img4.tuhu.org/D3n023kFjjgjYzz87qdh4g_w1600_h1331.jpeg',
    'https://img4.tuhu.org/7QAkLaPgM5ZrueoMigS8ng_w1277_h1600.jpeg',
  ],
  asyncClose: true,
});

setTimeout(() => {
  instance.close();
}, 2000);

组件调用

如果需要在图片预览内嵌入组件或其他自定义内容,可以使用组件调用的方式,调用前需要通过 Vue.use 注册组件。

<sf-image-preview v-model="show" :images="images" @change="onChange">
  <template v-slot:index>第{ { index } }页</template>
</sf-image-preview>
export default {
  data() {
    return {
      show: false,
      index: 0,
      images: [
        'https://img4.tuhu.org/JU_d6bTpbt6kxlAcmNKCew_w660_h520.jpeg',
        'https://img4.tuhu.org/4sVmt9tW6ZR89aBswsUhfA_w1600_h1295.jpeg',
        'https://img4.tuhu.org/D3n023kFjjgjYzz87qdh4g_w1600_h1331.jpeg',
        'https://img4.tuhu.org/7QAkLaPgM5ZrueoMigS8ng_w1277_h1600.jpeg',
      ],
    };
  },
  methods: {
    onChange(index) {
      this.index = index;
    },
  },
};

API

Options

通过函数调用 ImagePreview 时,支持传入以下选项:

| 参数名 | 说明 | 类型 | 默认值 | | --- | --- | --- | --- | | images | 需要预览的图片 URL 数组 | string[] | [] | | startPosition | 图片预览起始位置索引 | number | string | 0 | | swipeDuration | 动画时长,单位为ms | number | string | 300 | | showIndex | 是否显示页码 | boolean | true | | showIndicators | 是否显示轮播指示器 | boolean | false | | loop | 是否开启循环播放 | boolean | true | | onClose | 关闭时的回调函数 | Function | - | | onChange | 切换图片时的回调函数,回调参数为当前索引 | Function | - | | onScale | 缩放图片时的回调函数,回调参数为当前索引和当前缩放值组成的对象 | Function | - | | asyncClose | 是否开启异步关闭 | boolean | false | | closeOnPopstate | 是否在页面回退时自动关闭 | boolean | true | | className | 自定义类名 | any | - | | maxZoom | 手势缩放时,最大缩放比例 | number | string | 3 | | minZoom | 手势缩放时,最小缩放比例 | number | string | 1/3 | | closeable | 是否显示关闭图标 | boolean | false | | closeIcon| 关闭图标名称或图片链接 | string | clear | | closeIconPosition | 关闭图标位置,可选值为top-leftbottom-left bottom-right | string | top-right | | transition | 动画类名,等价于 transtionname 属性 | string | sf-fade | | getContainer | 指定挂载的节点,用法示例 | string | () => Element | - |

Props

通过组件调用 ImagePreview 时,支持以下 Props:

| 参数 | 说明 | 类型 | 默认值 | | --- | --- | --- | --- | | images | 需要预览的图片 URL 数组 | string[] | [] | | start-position | 图片预览起始位置索引 | number | string | 0 | | swipe-duration | 动画时长,单位为 ms | number | string | 300 | | show-index | 是否显示页码 | boolean | true | | show-indicators | 是否显示轮播指示器 | boolean | false | | loop | 是否开启循环播放 | boolean | true | | async-close | 是否开启异步关闭 | boolean | false | | close-on-popstate | 是否在页面回退时自动关闭 | boolean | true | | class-name | 自定义类名 | any | - | | max-zoom | 手势缩放时,最大缩放比例 | number | string | 3 | | min-zoom | 手势缩放时,最小缩放比例 | number | string | 1/3 | | closeable | 是否显示关闭图标 | boolean | false | | close-icon | 关闭图标名称或图片链接 | string | clear | | close-icon-position | 关闭图标位置,可选值为top-leftbottom-left bottom-right | string | top-right | | transition | 动画类名,等价于 transtionname 属性 | string | sf-fade | | get-container | 指定挂载的节点,用法示例 | string | () => Element | - |

Events

通过组件调用 ImagePreview 时,支持以下事件:

| 事件 | 说明 | 回调参数 | | --- | --- | --- | | close | 关闭时触发 | { index: 索引, url: 图片链接 } | | closed | 关闭且且动画结束后触发 | - | | change | 切换当前图片时触发 | index: 当前图片的索引 | | scale | 缩放当前图片时触发 | { index: 当前图片的索引, scale: 当前缩放的值 } |

方法

通过组件调用 ImagePreview 时,通过 ref 可以获取到 ImagePreview 实例并调用实例方法,详见组件实例方法

| 方法名 | 说明 | 参数 | 返回值 | | --------------- | -------------- | ------------------------------- | ------ | | swipeTo | 切换到指定位置 | index: number, options: Options | - |

Slots

通过组件调用 ImagePreview 时,支持以下插槽:

| 名称 | 说明 | 参数 | | ----- | ------------------------------ | ------------------------- | | index | 自定义页码内容 | { index: 当前图片的索引 } | | cover | 自定义覆盖在图片预览上方的内容 | - |

onClose 回调参数

| 参数名 | 说明 | 类型 | | ------ | ---------------- | -------- | | url | 当前图片 URL | string | | index | 当前图片的索引值 | number |

onScale 回调参数

| 参数名 | 说明 | 类型 | | ------ | ---------------- | -------- | | index | 当前图片的索引值 | number | | scale | 当前图片的缩放值 | number |

样式变量

组件提供了下列 Less 变量,可用于自定义样式,使用方法请参考主题定制

| 名称 | 默认值 | 描述 | | --------------------------------------- | -------------------- | ---- | | @image-preview-index-text-color | @white | - | | @image-preview-index-font-size | @font-size-md | - | | @image-preview-index-line-height | @line-height-md | - | | @image-preview-index-text-shadow | 0 1px 1px @gray-8 | - | | @image-preview-overlay-background-color | rgba(0, 0, 0, 0.9) | - | | @image-preview-close-icon-size | 22px | - | | @image-preview-close-icon-color | @gray-5 | - | | @image-preview-close-icon-active-color | @gray-6 | - | | @image-preview-close-icon-margin | @padding-md | - | | @image-preview-close-icon-z-index | 1 | - |

常见问题

在桌面端无法操作组件?

参见桌面端适配