使用Vue实现网页截图和截屏功能

npm install -g @vue/cli

vue create my-screenshot-app

cd my-screenshot-app

npm install html2canvas

<template>
  <div>
    <button @click="captureScreenshot">截图</button>
    <img v-if="screenshot" :src="screenshot" alt="截图" />
  </div>
</template>
<script>
import html2canvas from 'html2canvas';
export default {
  data() {
    return {
      screenshot: null,
    };
  },
  methods: {
    async captureScreenshot() {
      const elementToCapture = document.body; // 截取整个页面
      const canvas = await html2canvas(elementToCapture);
      const screenshot = canvas.toDataURL('image/png');
      this.screenshot = screenshot;
    },
  },
};
</script>

<template>
  <div id="app">
    <Screenshot />
  </div>
</template>
<script>
import Screenshot from '@/components/Screenshot.vue';
export default {
  components: {
    Screenshot,
  },
};
</script>

npm install vue-cropper

<template>
  <div>
    <img :src="screenshot" alt="截图" />
    <cropper
      v-if="showCropper"
      ref="cropper"
      :options="cropperOptions"
    ></cropper>
    <button @click="openCropper">编辑截图</button>
  </div>
</template>
<script>
import Cropper from 'vue-cropper';
export default {
  components: {
    cropper: Cropper,
  },
  data() {
    return {
      screenshot: null,
      showCropper: false,
      cropperOptions: {
        viewMode: 1,
        aspectRatio: 16 / 9, // 调整为您需要的宽高比
      },
    };
  },
  methods: {
    openCropper() {
      if (this.screenshot) {
        this.showCropper = true;
        this.$refs.cropper.setImage(this.screenshot);
      }
    },
    cropImage() {
      this.screenshot = this.$refs.cropper.getCroppedCanvas().toDataURL();
      this.showCropper = false;
    },
  },
};
</script>

<template>
  <div>
    <button @click="captureScreenshot">截图</button>
    <button @click="editScreenshot" v-if="screenshot">编辑截图</button>
    <img v-if="screenshot" :src="screenshot" alt="截图" />
    <cropper-dialog v-if="showCropper" :src="screenshot" @close="closeCropper" @confirm="confirmCropper" />
  </div>
</template>
<script>
import html2canvas from 'html2canvas';
import CropperDialog from '@/components/Cropper.vue';
export default {
  data() {
 return {
      screenshot: null,
      showCropper: false,
    };
  },
  components: {
    'cropper-dialog': CropperDialog,
  },
  methods: {
    async captureScreenshot() {
      const elementToCapture = document.body; // 截取整个页面
      const canvas = await html2canvas(elementToCapture);
      const screenshot = canvas.toDataURL('image/png');
      this.screenshot = screenshot;
    },
    editScreenshot() {
      this.showCropper = true;
    },
    closeCropper() {
      this.showCropper = false;
    },
    confirmCropper(dataUrl) {
      this.screenshot = dataUrl;
      this.showCropper = false;
    },
  },
};
</script>

npm run serve