PPT/src/views/components/element/FrameElement/BaseFrameElement.vue

<template>
  <div class="base-element-frame"
    :style="{
      top: elementInfo.top + 'px',
      left: elementInfo.left + 'px',
      width: elementInfo.width + 'px',
      height: elementInfo.height + 'px',
    }"
  >
    <div
      class="rotate-wrapper"
      :style="{ transform: `rotate(${elementInfo.rotate}deg)` }"
    >
      <div class="element-content">
        <!-- 延迟加载iframe：只有在可见且不是缩略图时才加载 -->
        <iframe 
          :key="`html-${iframeKey}`"
          :srcdoc="elementInfo.url" 
          v-if="elementInfo.isHTML && !isThumbnail && isVisible"
          :width="elementInfo.width"
          :height="elementInfo.height"
          :frameborder="0" 
          :allowfullscreen="true"
          allow="camera *; microphone *; display-capture; midi; encrypted-media; fullscreen; geolocation; clipboard-read; clipboard-write; accelerometer; autoplay; gyroscope; payment; picture-in-picture; usb; xr-spatial-tracking;"
        ></iframe>
        <iframe 
          :key="`src-${iframeKey}`"
          v-else-if="!isThumbnail && isVisible"
          :src="elementInfo.url"
          :width="elementInfo.width"
          :height="elementInfo.height"
          :frameborder="0" 
          :allowfullscreen="true"
          allow="camera *; microphone *; display-capture; midi; encrypted-media; fullscreen; geolocation; clipboard-read; clipboard-write; accelerometer; autoplay; gyroscope; payment; picture-in-picture; usb; xr-spatial-tracking;"
          @load="handleIframeLoad"
        ></iframe>
        <!-- 占位符：当不可见时显示 -->
        <div v-else-if="!isThumbnail && !isVisible" class="iframe-placeholder">
          <div class="placeholder-content">
            <div class="placeholder-icon">🌐</div>
            <div class="placeholder-text">互动工具</div>
            <div class="placeholder-type">（{{ getTypeLabel(Number(elementInfo.toolType)) }}）</div>
          </div>
        </div>
        <!-- 缩略图模式 -->
        <div v-else-if="isThumbnail" class="thumbnail-content">
          <div class="thumbnail-content-inner">
            <div>互动工具</div>
            <div>（{{ getTypeLabel(Number(elementInfo.toolType)) }}）</div>
          </div>
        </div>
        <!-- 在放映模式下不显示遮罩层，允许用户与iframe交互 -->
        <div class="mask" v-if="false"></div>
      </div>
    </div>
  </div>
</template>

<script lang="ts" setup>
import type { PropType } from 'vue'
import type { PPTFrameElement } from '@/types/slides'
import { ref, watch, nextTick } from 'vue'

const props = defineProps({
  elementInfo: {
    type: Object as PropType<PPTFrameElement>,
    required: true,
  },
  isThumbnail: {
    type: Boolean,
    default: false,
  },
  isVisible: {
    type: Boolean,
    default: false,
  },
})

// 用于强制刷新iframe的key
const iframeKey = ref(0)

// 监听elementInfo.url的变化
watch(() => props.elementInfo.url, (newUrl, oldUrl) => {
  if (newUrl !== oldUrl) {
    // 通过改变key来强制刷新iframe
    iframeKey.value++
  }
})

// 获取类型标签
const getTypeLabel = (type: number) => {
  const typeMap: Record<number, string> = {
    45: '选择题',
    15: '问答题',
    72: 'AI应用',
    73: 'H5页面'
  }
  return typeMap[type] || '未知'
}

// 处理iframe加载完成事件
const handleIframeLoad = async (event: Event) => {
  const iframe = event.target as HTMLIFrameElement
  
  try {
    // 等待iframe完全加载
    await nextTick()
    setTimeout(async () => {
      // 检查iframe是否可访问（同源检查）
      if (iframe.contentWindow && iframe.contentDocument) {
        const iframeDoc = iframe.contentDocument
        const iframeHead = iframeDoc.head || iframeDoc.getElementsByTagName('head')[0]
      
        if (iframeHead) {
        // 动态导入JS文件
          const [awsJs, jqJs, jieTuJs] = await Promise.all([
            import('./aws-sdk-2.235.1.min.js'),
            import('./jquery-3.6.0.min.js'),
            import('./jietu.js')
          ])
        
          // 创建script标签并注入JS文件
          const scripts = [
            { id: 'aws-sdk', content: awsJs.default || awsJs },
            { id: 'jquery', content: jqJs.default || jqJs },
            { id: 'jietu', content: jieTuJs.default || jieTuJs }
          ]
        
          scripts.forEach(script => {
          // 检查是否已经注入过
            if (!iframeDoc.getElementById(script.id)) {
              const scriptElement = iframeDoc.createElement('script')
              scriptElement.id = script.id
              scriptElement.textContent = script.content
              iframeHead.appendChild(scriptElement)
            
              console.log(`已注入 ${script.id} 到iframe中`)
            }
          })
        
          // 可选：在iframe中执行一些初始化代码
          try {
            iframe.contentWindow.eval(`
            console.log('iframe中的JS环境已准备就绪');
            // 这里可以添加一些初始化代码
          `)
          }
          catch (evalError) {
            console.warn('无法在iframe中执行代码:', evalError)
          }
        }
      }
      else {
        console.warn('无法访问iframe内容，可能是跨域限制')
      }
    }, 2000)

  }
  catch (error) {
    console.error('注入JS到iframe失败:', error)
  }
}
</script>

<style lang="scss" scoped>
.base-element-frame {
  position: absolute;
}
.element-content {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.mask {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
.rotate-wrapper {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.thumbnail-content {
  width: 100%;
  height: 100%;
  background-color: #fff;
}

.thumbnail-content-inner {
  width: 100%;
  height: 100%;
  color: #3681fc;
  font-size: 110px;
  font-weight: 600;
  text-align: center;
  line-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 50px;
}

/* iframe占位符样式 */
.iframe-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border: 2px solid #dee2e6;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.placeholder-content {
  text-align: center;
  color: #6c757d;
  font-family: Arial, sans-serif;
}

.placeholder-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.placeholder-text {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.placeholder-type {
  font-size: 12px;
  opacity: 0.8;
}

/* 添加加载动画效果 */
.iframe-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}
</style>