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

<template>
  <!-- 
  
        width: elementInfo.width + 'px',
        height: elementInfo.height + 'px',
  
  -->
  <div
    class="base-element-frame"
    :style="{
      transform: isThumbnail ?  'scale(1)': `scale(${1 / props.scale})`,
      transformOrigin: 'top left', // 关键点
      top:  props.elementInfo.top + 'px',
      left: props.elementInfo.left  + 'px',
      width: (isThumbnail ? props.elementInfo.width : width) + 'px',
      height: (isThumbnail ? props.elementInfo.height : height) + 'px',
      overflow: 'hidden',
    }"
  >
    <div
      class="rotate-wrapper"
      :style="{ transform: `rotate(${elementInfo.rotate}deg)` }"
    >
      <div class="element-content">
        <div class="fullscreen-spin mask" v-if="(!elementInfo.isDone && !isThumbnail && isVisible) || frameloading">
          <div class="spin">
            <div class="spinner"></div>
          </div>
        </div>
        <!-- 视频类型（type 74）：使用 video 标签 -->
        <video
          v-if="elementInfo.toolType === 74 && !isThumbnail && isVisible"
          :key="`video-${iframeKey}`"
          :src="elementInfo.url"
          :width="width"
          :height="height"
          controls
          :style="{ width: '100%', height: '100%', objectFit: 'contain' }"
        ></video>
        <!-- 英语口语预览（type 77）：使用 Vue 组件直接渲染，url 字段即 configId -->
        <TopicDiscussionPreview
          v-else-if="Number(elementInfo.toolType) === 77 && !isThumbnail && isVisible"
          :configId="elementInfo.url"
          :style="{ width: '100%', height: '100%' }"
        />
        <!-- B站视频类型（type 75）：使用 iframe -->
        <iframe
          v-else-if="elementInfo.toolType === 75 && !isThumbnail && isVisible"
          :key="`bilibili-${iframeKey}`"
          :src="elementInfo.url"
          :width="width"
          :height="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>
        <!-- 延迟加载iframe：只有在可见且不是缩略图时才加载 -->
        <iframe
          :key="`html-${iframeKey}`"
          :srcdoc="elementInfo.url"
          v-else-if="elementInfo.isHTML && !isThumbnail && isVisible"
          :width="width"
          :height="height"
          :frameborder="0" 
          :allowfullscreen="true"
          allow="camera *; microphone *; display-capture; midi; encrypted-media; fullscreen; geolocation; clipboard-read; clipboard-write; accelerometer; autoplay; gyroscope; payment; picture-in-picture; usb; xr-spatial-tracking;"
          @load="handleIframeLoad"
        ></iframe>
        <iframe
          :key="`src-${iframeKey}`"
          v-else-if="!isThumbnail && isVisible"
          :src="elementInfo.url"
          :width="width"
          :height="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">{{ lang.ssInteract }}</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>{{ lang.ssInteract }}</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 { lang } from '@/main'
import TopicDiscussionPreview from '@/views/Editor/EnglishSpeaking/preview/TopicDiscussionPreview.vue'
import { ref, watch, nextTick } from 'vue'
import { computed } from 'vue'

const props = defineProps({
  elementInfo: {
    type: Object as PropType<PPTFrameElement>,
    required: true,
  },
  isThumbnail: {
    type: Boolean,
    default: false,
  },
  scale: {
    type: Number,
    default: 1
  },
  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++
    }
  }
)



const width = computed(() => {
  return props.elementInfo.width * props.scale
})

const height = computed(() => {
  return props.elementInfo.height * props.scale
})

const left = computed(() => {
  return props.elementInfo.left * props.scale
})

const top = computed(() => {
  return props.elementInfo.top * props.scale
})


// 获取类型标签
const getTypeLabel = (type: number): string => {
  const typeMap: Record<number, keyof typeof lang> = {
    45: 'ssChoiceQ',
    15: 'ssEssayQ',
    72: 'ssAIApp',
    73: 'ssH5Page',
    74: 'ssVideo',
    75: lang.lang == 'cn' ? 'ssBiliVideo' : 'ssYouTube',
    76: 'ssCreateSpace',
    77: 'ssEnglishSpeakingTool',
    78: 'ssVote',
  }
  const key = typeMap[type]
  return (key ? lang[key] : lang.ssUnknown) as string
}

const frameloading = ref(false)

// 处理iframe加载完成事件
const handleIframeLoad = async (event: Event) => {
  const iframe = event.target as HTMLIFrameElement
  frameloading.value = true
  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) {
          // 使用动态导入获取JS文件内容
          const jsFiles = [
            {
              id: 'aws-sdk',
              importPath: () => import('./aws-sdk-2.235.1.min.js?raw'),
            },
            {
              id: 'jquery',
              importPath: () => import('./jquery-3.6.0.min.js?raw'),
            },
            { id: 'jietu', importPath: () => import('./jietu.js?raw') },
          ]

          for (const jsFile of jsFiles) {
            try {
              // 检查是否已经注入过
              if (!iframeDoc.getElementById(jsFile.id)) {
                const jsModule = await jsFile.importPath()
                const jsContent = jsModule.default || jsModule

                const scriptElement = iframeDoc.createElement('script')
                scriptElement.id = jsFile.id
                scriptElement.textContent = jsContent
                iframeHead.appendChild(scriptElement)

                console.log(`已注入 ${jsFile.id} 到iframe中`)
              }
            }
            catch (fetchError) {
              console.error(`获取 ${jsFile.id} 失败:`, fetchError)
            }
          }
          frameloading.value = false

          // 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) {
            frameloading.value = false
            console.warn('无法在iframe中执行代码:', evalError)
          }
        }
      }
      else {
        frameloading.value = false
        console.warn('无法访问iframe内容，可能是跨域限制')
      }
    }, 1000)
  }
  catch (error) {
    frameloading.value = false
    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;

  video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #000;
  }
}
.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: #ec8c00;
  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%;
  }
}

.fullscreen-spin {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;

  &.mask {
    background-color: rgba($color: #f1f1f1, $alpha: .7);
  }
}
.spin {
  width: 200px;
  height: 200px;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -100px;
  margin-left: -100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid #f6c82b;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spinner .8s linear infinite;
}
.text {
  margin-top: 20px;
  color: #f6c82b;
}

@keyframes spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
</style>