基于Vue3实现印章徽章组件的示例代码

需要实现的组件效果：

该组件有设置颜色、大小、旋转度数和文本内容功能。

一、组件实现代码

组件代码文件结构

src/components/StampBadge/src/StampBadge.vue 文件代码

<template>
 <div
   class="first-ring"
   v-bind="getBindValue"
   :class="getStampBadgeClass"
   :style="{ transform: `rotate(${rotate}deg)` }"
 >
   <div class="second-ring" :class="getStampBadgeClass">
     <div class="third-ring" :class="getStampBadgeClass">
       <div class="forth-ring" :class="getStampBadgeClass">
         <div class="content-rectangle ellipsis" :class="getStampBadgeClass">
           <span class="">{{ content }}</span>
         </div>
       </div>
     </div>
   </div>
 </div>
</template>

<script lang="ts">
 import { defineComponent } from "vue";
 export default defineComponent({
   name: "StampBadge",
   inheritAttrs: false,
 });
</script>

<script lang="ts" setup>
 import { computed, unref } from "vue";
 import { stampBadgeProps } from "./props";
 import { useAttrs } from "/@/hooks/core/useAttrs";

const props = defineProps(stampBadgeProps);
 // get component class
 const attrs = useAttrs({ excludeDefaultKeys: false });
 const getStampBadgeClass = computed(() => {
   const { color, size } = props;
   return [
     {
       [`stamp-badge-${color}`]: !!color,
       [`stamp-badge-${size}`]: !!size,
     },
   ];
 });

// get inherit binding value
 const getBindValue = computed(() => ({ ...unref(attrs), ...props }));
</script>

<style lang="less" scoped>
 .first-ring {
   border-radius: 100px;
   display: flex;
   justify-content: center;
   align-items: center;
 }

.second-ring {
   background: #fff;
   border-radius: 100px;
   display: flex;
   justify-content: center;
   align-items: center;
 }

.third-ring {
   border-radius: 100px;
   display: flex;
   justify-content: center;
   align-items: center;
 }

.forth-ring {
   background: #fff;
   border-radius: 100px;
   display: flex;
   justify-content: center;
   align-items: center;
   position: relative;
 }

.content-rectangle {
   background: #fff;
   font-weight: bold;
   text-align: center;
   position: absolute;
 }

.ellipsis {
   overflow: hidden;
   white-space: nowrap;
   text-overflow: ellipsis;
 }

// primary
 .stamp-badge-primary.first-ring {
   background: #1890ff;
 }
 .stamp-badge-primary.third-ring {
   background: #1890ff;
 }
 .stamp-badge-primary.content-rectangle {
   border: 1px solid #1890ff;
   color: #1890ff;
 }
 // success
 .stamp-badge-success.first-ring {
   background: #52c41a;
 }
 .stamp-badge-success.third-ring {
   background: #52c41a;
 }
 .stamp-badge-success.content-rectangle {
   border: 1px solid #52c41a;
   color: #52c41a;
 }
 // error
 .stamp-badge-error.first-ring {
   background: #ff4d4f;
 }
 .stamp-badge-error.third-ring {
   background: #ff4d4f;
 }
 .stamp-badge-error.content-rectangle {
   border: 1px solid #ff4d4f;
   color: #ff4d4f;
 }
 // warning
 .stamp-badge-warning.first-ring {
   background: #faad14;
 }
 .stamp-badge-warning.third-ring {
   background: #faad14;
 }
 .stamp-badge-warning.content-rectangle {
   border: 1px solid #faad14;
   color: #faad14;
 }
 // info
 .stamp-badge-info.first-ring {
   background: #ccc;
 }
 .stamp-badge-info.third-ring {
   background: #ccc;
 }
 .stamp-badge-info.content-rectangle {
   border: 1px solid #ccc;
   color: #ccc;
 }
 // large
 .stamp-badge-large.first-ring {
   width: 84px;
   height: 84px;
 }
 .stamp-badge-large.second-ring {
   width: 80px;
   height: 80px;
 }
 .stamp-badge-large.third-ring {
   width: 74px;
   height: 74px;
 }
 .stamp-badge-large.forth-ring {
   width: 64px;
   height: 64px;
 }
 .stamp-badge-large.content-rectangle {
   width: 90px;
   font-size: 1.2rem;
 }
 // middle
 .stamp-badge-middle.first-ring {
   width: 64px;
   height: 64px;
 }
 .stamp-badge-middle.second-ring {
   width: 60px;
   height: 60px;
 }
 .stamp-badge-middle.third-ring {
   width: 56px;
   height: 56px;
 }
 .stamp-badge-middle.forth-ring {
   width: 48px;
   height: 48px;
 }
 .stamp-badge-middle.content-rectangle {
   width: 70px;
   font-size: 1rem;
 }
 // small
 .stamp-badge-small.first-ring {
   width: 54px;
   height: 54px;
 }
 .stamp-badge-small.second-ring {
   width: 50px;
   height: 50px;
 }
 .stamp-badge-small.third-ring {
   width: 46px;
   height: 46px;
 }
 .stamp-badge-small.forth-ring {
   width: 38px;
   height: 38px;
 }
 .stamp-badge-small.content-rectangle {
   width: 60px;
   font-size: 0.8rem;
 }
</style>

src/components/StampBadge/src/props.ts 文件代码

export const stampBadgeProps = {
 color: {
   type: String,
   default: "primary",
   validator: (v) =>
     ["primary", "error", "warning", "success", "info"].includes(v),
 },
 /**
  * stamp badge size.
  * @default: middle
  */
 size: {
   type: String,
   default: "middle",
   validator: (v) => ["large", "middle", "small"].includes(v),
 },
 /**
  * stamp badge rotate deg.
  * @default: 0
  */
 rotate: { type: Number, default: 0 },
 content: { type: String, default: "Unknown" },
};

src/components/StampBadge/index.ts 文件代码

import { withInstall } from "/@/utils";
import type { ExtractPropTypes } from "vue";
import stampbadge from "./src/StampBadge.vue";
import { stampBadgeProps } from "./src/props";

export const StampBadge = withInstall(stampbadge);
export declare type ButtonProps = Partial<
 ExtractPropTypes<typeof stampBadgeProps>
>;

src/utils/index.ts 文件代码

export const withInstall = <T>(component: T, alias?: string) => {
 const comp = component as any;
 comp.install = (app: App) => {
   app.component(comp.name || comp.displayName, component);
   if (alias) {
     app.config.globalProperties[alias] = component;
   }
 };
 return component as T & Plugin;
};

二、组件全局注册代码

src/components/registerGlobComp.ts 文件代码

import type { App } from "vue";
import { StampBadge } from "./StampBadge";

export function registerGlobComp(app: App) {
 app.use(StampBadge);
}

src/main.ts 文件代码

import { createApp } from "vue";
import App from "./App.vue";
import { registerGlobComp } from "/@/components/registerGlobComp";

async function bootstrap() {
 // 创建应用实例
 const app = createApp(App);
 // 注册全局组件
 registerGlobComp(app);
 // 挂载应用
 app.mount("#app", true);
}

bootstrap();

三、组件应用代码

<div style="width: 500px; height: 100px; position: relative">
 <StampBadge
   style="position: absolute; top: 0; right: 0"
   size="middle"
   color="success"
   content="已建档"
   :rotate="45"
 />
</div>

来源：https://www.cnblogs.com/yuzhihui/p/17359323.html