vue 管理后台使用虚拟键盘组件支持种英文切换

小半 • 2023年1月18日下午6:15 • 前端开发 • 阅读 313

前言：在大型触屏设备（如双屏设备）中，就没有键盘去操作，而且在触屏input或者textarea的输入时候就无法去输入值，没办法触发输入框enter事件，所以就需要去建立一个虚拟键盘去操作
就想着找一找vue有没有类似的键盘组件。还！真！有！

项目使用框架：vue+element ui

官网
https://virtual-keyboard.js.org/vuejs

示例
https://hodgef.com/simple-keyboard/demos/

文档
https://hodgef.com/simple-keyboard/getting-started/

黑的、白的、移动端、全键盘、数字键盘等

实际应用

1.先安装

    npm i simple-keyboard -S

2.我这里是单独写了一个SimpleKeyboard.vue的组件

<template>
  <div :class="keyboardClass"></div>
</template>

<script>
import Keyboard from "simple-keyboard";
import "simple-keyboard/build/css/index.css";

export default {
  name: "SimpleKeyboard",
  props: {
    keyboardClass: {
      default: "simple-keyboard",
      type: String,
    },
    input: {
      type: String,
    },
    layout: {
      type: Object,
      default: function () {
        return {
          default: [
            "` 1 2 3 4 5 6 7 8 9 0 - = {bksp}",
            "{tab} q w e r t y u i o p [ ] \\",
            "{lock} a s d f g h j k l ; ' {enter}",
            "{shift} z x c v b n m , . / {shift}",
            "@ {space}",
          ],
          shift: [
            "~ ! @ # $ % ^ &amp; * ( ) _ + {bksp}",
            "{tab} Q W E R T Y U I O P { } |",
            '{lock} A S D F G H J K L : " {enter}',
            "{shift} Z X C V B N M &lt; &gt; ? {shift}",
            "@ {space}",
          ],
        };
      },
    },
  },
  data: () => ({
    keyboard: null,
  }),
  mounted() {
    this.keyboard = new Keyboard(this.keyboardClass, {
      onChange: this.onChange,
      onKeyPress: this.onKeyPress,
    });
    this.keyboard.setOptions({
      layoutName: "default",
      layout: this.layout,
      display: {
        "{enter}": "close",
        "{shift}": "shift",
        "{bksp}": "del",
        "{tab}": "tab",
        "{space}": "space",
        "{lock}": "caps",
      },
    });
  },
  methods: {
    onChange(input) {
      this.$emit("onChange", input);
    },
    onKeyPress(button) {
      this.$emit("onKeyPress", button);

      /**
       * If you want to handle the shift and caps lock buttons
       */
      if (button === "{shift}" || button === "{lock}") this.handleShift();
    },
    handleShift() {
      let currentLayout = this.keyboard.options.layoutName;
      let shiftToggle = currentLayout === "default" ? "shift" : "default";

      this.keyboard.setOptions({
        layoutName: shiftToggle,
      });
    },
  },
  watch: {
    input(input) {
      this.keyboard.setInput(input);
    },
  },
};
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
</style>

tips：因为我这边有几个键需要自定义，所以在mounted中进行了修改~

在需要应用的页面引入注册使用即可

   <!-- 全键盘组件 -->
      <div class="keyboard-mask">
        <SimpleKeyboard @onChange="onChange" @onKeyPress="onKeyPress" :input="input"/>
      </div>

     onChange(input) {
      // input 是当前点击按钮的值
     },

    onKeyPress(button) {
      if (button == "{enter}") {
      	// 如果按确认键的相应操作
      }
      if (button == "{bksp}") {
       // 删除键的相应操作
      }
    },