给我一个.vue顶栏可以添加表情，插入图片可以修改字体的日记代码

以下是一个简单的 Vue 顶栏组件，可以添加表情和插入图片，并且可以修改字体：

<template>
  <div class="topbar">
    <div class="emoji-btn" @click="toggleEmojiPicker">
      <i class="far fa-smile"></i> 表情
    </div>
    <div class="img-btn" @click="openImagePicker">
      <i class="far fa-image"></i> 插入图片
    </div>
    <div class="font-dropdown">
      <div class="font-btn" @click="toggleFontDropdown">
        <i class="fas fa-font"></i> 字体
      </div>
      <ul v-show="showFontDropdown">
        <li><a href="#" @click.prevent="setFont('Arial')">Arial</a></li>
        <li><a href="#" @click.prevent="setFont('Times New Roman')">Times New Roman</a></li>
        <li><a href="#" @click.prevent="setFont('Verdana')">Verdana</a></li>
      </ul>
    </div>
    <div class="emoji-picker" v-show="showEmojiPicker">
      <ul>
        <li @click="insertEmoji('😀')"><span>😀</span></li>
        <li @click="insertEmoji('😂')"><span>😂</span></li>
        <li @click="insertEmoji('😍')"><span>😍</span></li>
        <li @click="insertEmoji('👍')"><span>👍</span></li>
        <li @click="insertEmoji('👎')"><span>👎</span></li>
        <li @click="insertEmoji('🤔')"><span>🤔</span></li>
      </ul>
    </div>
    <input type="file" ref="imageInput" style="display: none" @change="insertImage">
  </div>
</template>

<script>
export default {
  data() {
    return {
      showEmojiPicker: false,
      showFontDropdown: false,
      currentFont: 'Arial'
    }
  },
  methods: {
    toggleEmojiPicker() {
      this.showEmojiPicker = !this.showEmojiPicker;
    },
    toggleFontDropdown() {
      this.showFontDropdown = !this.showFontDropdown;
    },
    setFont(font) {
      this.currentFont = font;
      this.showFontDropdown = false;
    },
    insertEmoji(emoji) {
      document.execCommand('insertText', false, emoji);
    },
    openImagePicker() {
      this.$refs.imageInput.click();
    },
    insertImage() {
      const file = this.$refs.imageInput.files[0];
      const reader = new FileReader();
      reader.onload = (e) => {
        const img = new Image();
        img.onload = () => {
          const canvas = document.createElement('canvas');
          canvas.width = img.width;
          canvas.height = img.height;
          const ctx = canvas.getContext('2d');
          ctx.drawImage(img, 0, 0);
          const imgData = canvas.toDataURL(file.type);
          document.execCommand('insertHTML', false, `<img src="${imgData}" style="max-width: 100%;"/>`);
        };
        img.src = e.target.result;
      };
      reader.readAsDataURL(file);
    }
  }
}
</script>

<style>
.topbar {
  display: flex;
  align-items: center;
  height: 50px;
  background-color: #eee;
  padding: 0 20px;
}

.emoji-btn, .img-btn, .font-btn {
  margin-right: 10px;
  cursor: pointer;
}

.emoji-picker {
  position: absolute;
  top: 50px;
  left: 0;
  width: 100%;
  background-color: #fff;
  border: 1px solid #ccc;
}

.emoji-picker ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.emoji-picker li {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 30px;
  height: 30px;
  margin: 5px;
  border-radius: 50%;
  background-color: #f0f0f0;
  cursor: pointer;
}

.emoji-picker li:hover {
  background-color: #e0e0e0;
}

.emoji-picker li span {
  font-size: 20px;
}

.font-dropdown {
  position: relative;
}

.font-dropdown ul {
  list-style: none;
  margin: 0;
  padding: 0;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #fff;
  border: 1px solid #ccc;
  z-index: 1;
  display: none;
}

.font-dropdown ul li {
  padding: 5px;
}

.font-dropdown ul li a {
  color: #333;
  text-decoration: none;
}

.font-dropdown ul li:hover {
  background-color: #f0f0f0;
}

.font-dropdown ul li:hover a {
  color: #000;
}

.font-dropdown ul:after {
  content: "";
  display: block;
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  border: 10px solid transparent;
  border-bottom-color: #ccc;
}

.font-dropdown ul:before {
  content: "";
  display: block;
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  border: 10px solid transparent;
  border-bottom-color: #fff;
}

.font-btn i {
  margin-right: 5px;
}

input[type="file"] {
  display: none;
}
</style>

你可以将此组件添加到你的 Vue 应用中，然后在需要使用顶栏的地方引入使用即可。