Vue と Canvas を使用してカスタマイズ可能な顔文字ジェネレーターを開発する方法

vue create emoji-generator
cd emoji-generator

npm install vue-router vue2-dragula fabric

// src/router/index.js
import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'
import Editor from '../views/Editor.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  },
  {
    path: '/editor',
    name: 'Editor',
    component: Editor
  }
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router

<!-- src/views/Home.vue -->
<template>
  <div>
    <h1>选择表情包素材</h1>
    <div class="emojis">
      <div v-for="(emoji, index) in emojis" :key="index" class="emoji">
        <img :src="emoji.src" alt="emoji" @click="selectEmoji(emoji)">
      </div>
    </div>
    <router-link to="/editor">继续编辑</router-link>
  </div>
</template>

<script>
export default {
  data() {
    return {
      emojis: [
        { src: require('@/assets/emoji1.png') },
        { src: require('@/assets/emoji2.png') },
        { src: require('@/assets/emoji3.png') }
      ]
    }
  },
  methods: {
    selectEmoji(emoji) {
      // 将选中的表情包存储在localStorage中
      localStorage.setItem('selectedEmoji', JSON.stringify(emoji))
    }
  }
}
</script>

<style scoped>
/* 样式省略 */
</style>

<!-- src/views/Editor.vue -->
<template>
  <div>
    <h1>表情包编辑器</h1>
    <div class="canvas-container">
      <canvas ref="canvas"></canvas>
    </div>
  </div>
</template>

<script>
import fabric from 'fabric'

export default {
  mounted() {
    this.initCanvas()
  },
  methods: {
    initCanvas() {
      const canvas = new fabric.Canvas(this.$refs.canvas)

      // 获取用户选择的表情包
      const selectedEmoji = JSON.parse(localStorage.getItem('selectedEmoji'))

      // 加载表情包图片
      fabric.Image.fromURL(selectedEmoji.src, (emoji) => {
        emoji.set({
          left: 100,
          top: 100,
          scaleX: 0.5,
          scaleY: 0.5
        })
        canvas.add(emoji)
      })
    }
  }
}
</script>

<style scoped>
/* 样式省略 */
</style>

<!-- src/views/Editor.vue -->
<template>
  <div>
    <h1>表情包编辑器</h1>
    <div class="canvas-container">
      <canvas ref="canvas"></canvas>
    </div>
    <div class="preview">
      <h2>预览</h2>
      <img :src="previewImage" alt="preview">
    </div>
    <button @click="saveEmoji">保存表情包</button>
  </div>
</template>

<script>
// 省略部分代码
export default {
  // 省略部分代码
  computed: {
    previewImage() {
      return this.$refs.canvas.toDataURL()
    }
  },
  methods: {
    // 省略部分代码
    saveEmoji() {
      const link = document.createElement('a')
      link.href = this.$refs.canvas.toDataURL()
      link.download = 'emoji.png'
      link.click()
    }
  }
}
</script>

<style scoped>
/* 样式省略 */
</style>