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228 lines
8.6 KiB
Markdown
Executable File
228 lines
8.6 KiB
Markdown
Executable File
---
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title: QRCode 二维码
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description:
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type: 0
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group: ⚙ 组件
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menuName: QRCode 二维码
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icon:
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order: 61
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---
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## 基本用法
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```schema: scope="body"
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{
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"type": "qr-code",
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"codeSize": 128,
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"value": "https://www.baidu.com"
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}
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```
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> 根据 QR 码国际标准，二进制模式最多可存储`2953`字节的内容（1 中文汉字=2 字节）
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## 配置背景色
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背景色默认为`#fff`（纯白色）, `backgroundColor`属性可以修改背景色。
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```schema: scope="body"
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[
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{
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"type": "qr-code",
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"codeSize": 128,
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"backgroundColor": "#108cee",
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"foregroundColor": "#000",
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"value": "https://www.baidu.com"
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}
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]
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```
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## 配置前景色
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前景色默认为`#000`（纯黑色）, `foregroundColor`属性可以前景色。
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```schema: scope="body"
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[
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{
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"type": "qr-code",
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"codeSize": 128,
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"backgroundColor": "#fff",
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"foregroundColor": "#108cee",
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"value": "https://www.baidu.com"
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}
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]
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```
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## 纠错等级
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`level`属性可以设置二维码的纠错等级，纠错等级分为四种（`'L' 'M' 'Q' 'H'`），从左到右依次提升，默认为`'L'`。
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```schema: scope="body"
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{
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"type": "hbox",
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"columns": [
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "L",
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"value": "https://www.baidu.com"
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},
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "M",
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"value": "https://www.baidu.com"
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},
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com"
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},
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "H",
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"value": "https://www.baidu.com"
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}
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]
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}
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```
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## 嵌入图片
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`imageSettings`属性可以设置二维码中嵌入的图片，`src`设置图片链接地址，图片大小默认为二维码大小的 10%，图片位置默认水平垂直居中。
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> 1.10.0 及以上版本。
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> 建议根据图片大小，调整二维码纠错等级，避免图片遮挡导致二维码无法被正确识别
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```schema: scope="body"
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com",
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"imageSettings": {
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"src": "https://internal-amis-res.cdn.bcebos.com/images/2020-1/1578395692722/4f3cb4202335.jpeg@s_0,w_216,l_1,f_jpg",
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}
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}
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```
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### 关联上下文变量
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```schema: scope="body"
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{
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"type": "page",
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"data": {
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"imgSrc": "https://internal-amis-res.cdn.bcebos.com/images/2020-1/1578395692722/4f3cb4202335.jpeg@s_0,w_216,l_1,f_jpg"
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},
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"body": {
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com",
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"imageSettings": {
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"width": 50,
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"height": 30,
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"src": "${imgSrc}"
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}
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}
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}
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```
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### 图片宽高
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`width` 和 `height` 可以设置图片的宽度和高度。
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```schema: scope="body"
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com",
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"imageSettings": {
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"src": "https://internal-amis-res.cdn.bcebos.com/images/2020-1/1578395692722/4f3cb4202335.jpeg@s_0,w_216,l_1,f_jpg",
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"width": 50,
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"height": 30
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}
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}
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```
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### 图片偏移量
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以二维码**左上角**为原点，`x`，`y`分别设置图片的水平偏移量和垂直偏移量。示例通过`codeSize`和图片的`width` 和 `height` 计算出偏移量`{"x": 78, "y": 98}`，使图片位于右下角。
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```schema: scope="body"
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com",
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"imageSettings": {
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"src": "https://internal-amis-res.cdn.bcebos.com/images/2020-1/1578395692722/4f3cb4202335.jpeg@s_0,w_216,l_1,f_jpg",
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"width": 50,
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"height": 30,
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"x": 78,
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"y": 98
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}
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}
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```
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### 挖孔嵌入
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设置`excavate: true`，可以在二维码图片中挖孔，视觉上使图片和二维码处于同一图层。
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```schema: scope="body"
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{
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"type": "hbox",
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"columns": [
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com",
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"imageSettings": {
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"src": "https://internal-amis-res.cdn.bcebos.com/images/2020-1/1578395692722/4f3cb4202335.jpeg@s_0,w_216,l_1,f_jpg",
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"width": "50",
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"height": "30",
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"excavate": false
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}
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},
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{
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"type": "qr-code",
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"codeSize": 128,
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"level": "Q",
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"value": "https://www.baidu.com",
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"imageSettings": {
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"src": "https://internal-amis-res.cdn.bcebos.com/images/2020-1/1578395692722/4f3cb4202335.jpeg@s_0,w_216,l_1,f_jpg",
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"width": "50",
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"height": "30",
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"excavate": true
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}
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}
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]
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}
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```
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## 属性表
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| 属性名 | 类型 | 默认值 | 说明 |
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| ---------------------- | ------------------------------------ | ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
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| type | `string` | `"qr-code"` | 指定为 QRCode 渲染器 |
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| className | `string` | | 外层 Dom 的类名 |
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| qrcodeClassName | `string` | | 二维码 SVG 的类名 |
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| codeSize | `number` | `128` | 二维码的宽高大小 |
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| backgroundColor | `string` | `"#fff"` | 二维码背景色 |
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| foregroundColor | `string` | `"#000"` | 二维码前景色 |
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| level | `string` | `"L"` | 二维码复杂级别，有（'L' 'M' 'Q' 'H'）四种 |
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| value | [模板](../../docs/concepts/template) | `"https://www.baidu.com"` | 扫描二维码后显示的文本，如果要显示某个页面请输入完整 url（`"http://..."`或`"https://..."`开头），支持使用 [模板](./concepts/template) |
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| imageSettings | `object` | | QRCode 图片配置 |
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| imageSettings.src | `string` | | 图片链接地址 |
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| imageSettings.width | `number` | 默认为`codeSize`的 10% | 图片宽度 |
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| imageSettings.height | `number` | 默认为`codeSize`的 10% | 图片高度 |
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| imageSettings.x | `number` | 默认水平居中 | 图片水平方向偏移量 |
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| imageSettings.y | `number` | 默认垂直居中 | 图片垂直方向偏移量 |
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| imageSettings.excavate | `boolean` | `false` | 图片是否挖孔嵌入 |
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