amis2/docs/zh-CN/components/avatar.md
zhou999 2032de2ad7
feat:avatar头像组件 (#3175)
* fix:inputImage 裁剪模式可配置可旋转,但是功能无效

* feat:组件头像avatar

* feat:组件头像avatar完善

* feat:组件头像avatar根据评审完善

* feat:组件头像avatar根据评审完善

* feat:组件头像avatar根据评审完善

Co-authored-by: sqzhou <zhoushengqiang01@baidu.com>
2021-12-28 16:32:11 +08:00

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---
title: Avatar 头像
description:
type: 0
group: ⚙ 组件
menuName: Avatar 头像
icon:
order: 27
---
用来显示用户头像
## 基本使用
```schema: scope="body"
{
"type": "avatar",
"src": "https://suda.cdn.bcebos.com/images/amis/ai-fake-face.jpg"
}
```
## 文字
```schema: scope="body"
{
"type": "avatar",
"text": "AM"
}
```
## 图标
通过 icon 设置图标
```schema: scope="body"
{
"type": "avatar",
"icon": "fa fa-user"
}
```
> 如果同时存在 src、text 和 icon会优先用 src、接着 text、最后 icon
## 动态图片或文字
src、text 都支持变量,可以从上下文中动态获取图片或文字,下面的例子中:
- 第一个获取到了,显示正常
- 第二个没获取到,因此降级为显示 icon
- 第三个图片没获取到,由于 text 优先级比 icon 高,所以显示 text
```schema
{
"data": {
"myAvatar": "https://suda.cdn.bcebos.com/images/amis/ai-fake-face.jpg"
},
"type": "page",
"body": [
{
"type": "avatar",
"icon": "fa fa-user",
"src": "$myAvatar"
},
{
"type": "avatar",
"icon": "fa fa-user",
"src": "$other"
},
{
"type": "avatar",
"src": "$other",
"icon": "fa fa-user",
"text": "avatar"
}
]
}
```
## 方形和圆角形
可以通过 shape 改成方形或圆角形
```schema: scope="body"
[
{
"type": "avatar",
"shape": "square",
"text": "AM"
},
{
"type": "avatar",
"shape": "rounded",
"text": "AM",
"style": {
"marginLeft": "10px"
}
}
]
```
## 大小
通过 size 可以控制头像的大小
```schema: scope="body"
[
{
"type": "avatar",
"size": 'large',
"icon": "fa fa-user"
},
{
"type": "avatar",
"size": 'default',
"icon": "fa fa-user"
},
{
"type": "avatar",
"size": 'small',
"icon": "fa fa-user"
},
{
"type": "avatar",
"size": 60,
"src": "https://suda.cdn.bcebos.com/images/amis/ai-fake-face.jpg"
},
{
"type": "avatar",
"src": "https://suda.cdn.bcebos.com/images/amis/ai-fake-face.jpg"
},
{
"type": "avatar",
"size": 20,
"src": "https://suda.cdn.bcebos.com/images/amis/ai-fake-face.jpg"
},
]
```
## 控制字符类型距离左右两侧边界单位像素
通过 gap 可以控制字符类型距离左右两侧边界单位像素
```schema: scope="body"
[
{
"type": "avatar",
"text": 'ejson',
"gap": 2
},
{
"type": "avatar",
"text": "ejson",
"gap": 7
}
]
```
## 图片拉伸方式
通过 `fit` 可以控制图片拉伸方式,默认是 `'cover'`
```schema: scope="body"
[
{
"type": "avatar",
"fit": "cover",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg"
},
{
"type": "avatar",
"fit": "fill",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg"
},
{
"type": "avatar",
"fit": "contain",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg"
},
{
"type": "avatar",
"fit": "none",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg"
},
{
"type": "avatar",
"fit": "scale-down",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg"
}
]
```
## 控制图片是否允许拖动
通过 draggable 可以控制图片是否允许拖动
```schema: scope="body"
[
{
"type": "avatar",
"fit": "cover",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg",
"draggable": false
},
{
"type": "avatar",
"fit": "cover",
"src": "https://suda.cdn.bcebos.com/images/amis/plumeria.jpeg",
"draggable": true
}
]
```
## 图片加载失败后,通过 onError 控制是否进行 text、icon 置换
> 如果同时存在 text 和 icon会优先用 text、接着 icon
```schema: scope="body"
{
"type": "avatar",
"src": "empty",
"text": "avatar",
"onError": "return true;"
},
```
## 样式
可以通过 style 来控制背景及文字颜色
```schema: scope="body"
{
"type": "avatar",
"text": "AM",
"style": {
"background": "#DB3E35",
"color": "#FFFFFF"
}
}
```
## 属性表
| 属性名 | 类型 | 默认值 | 说明 |
| --------- | ----------- | ------ | --------------------- |
| className | `string` | | 外层 dom 的类名 |
| style | `object` | | 外层 dom 的样式 |
| fit |`'contain'` \| `'cover'` \| `'fill'` \| `'none'` \| `'scale-down'` | `'cover'` | 具体细节可以参考 MDN [文档](https://developer.mozilla.org/zh-CN/docs/Web/CSS/object-fit) |
| src | `string` | | 图片地址 |
| text | `string` | | 文字 |
| icon | `string` | `'fa fa-user'` | 图标 |
| shape | `'circle'` \| `'square'` \| `'rounded'` | `'circle'` | 形状,有三种 `'circle'` (圆形)、`'square'`(正方形)、`'rounded'`(圆角) |
| size | `number` \| `'default'` \| `'normal'` \| `'small'` | `'default'` | `'default' \| 'normal' \| 'small'`三种字符串类型代表不同大小分别是48、40、32也可以直接数字表示 |
| gap | `number` | 4 | 控制字符类型距离左右两侧边界单位像素 |
| alt | `number` | | 图像无法显示时的替代文本 |
| draggable | `boolean` | | 图片是否允许拖动 |
| crossOrigin | `'anonymous'` \| `'use-credentials'` \| `''` | | 图片的 `CORS` 属性设置 |
| onError | `string` | | 图片加载失败的字符串这个字符串是一个New Function内部执行的字符串参数是event使用event.nativeEvent获取原生dom事件这个字符串需要返回boolean值。设置 `"return ture;"` 会在图片加载失败后,使用 `text` 或者 `icon` 代表的信息来进行替换。目前图片加载失败默认是不进行置换。注意:图片加载失败,不包括$获取数据为空情况 |