feat(PdfPreview): 增强PDF预览的安全性和交互限制

添加CSS样式和事件监听器防止PDF内容被选择、复制或保存
禁用工具栏和调整默认语言为中文

@@ -5,7 +5,7 @@
 <template>
 <template>
     <van-popup v-if="show" :show="show" @update:show="emit('update:show', $event)" position="right"
     <van-popup v-if="show" :show="show" @update:show="emit('update:show', $event)" position="right"
         :style="{ height: '100%', width: '100%' }">
         :style="{ height: '100%', width: '100%' }">
-        <div id="pdf-container"></div>
+        <div id="pdf-container" class="pdf-no-select"></div>
         <van-button class="close-btn" type="default" icon="cross" round @click="emit('update:show', false)" />
         <van-button class="close-btn" type="default" icon="cross" round @click="emit('update:show', false)" />
         <van-overlay :show="loading">
         <van-overlay :show="loading">
             <div class="wrapper" @click.stop>
             <div class="wrapper" @click.stop>
@@ -68,20 +68,44 @@ const initPdfViewer = () => {
                 navShow: true,
                 navShow: true,
                 navigationShow: false,
                 navigationShow: false,
                 pdfViewResize: true,
                 pdfViewResize: true,
-                toolShow: true,
-                download: false,
-                clearScale: 1.5,
+                toolShow: false,
+                download: false, // 禁用下载功能
+                clearScale: 1.75,
                 fileName: props.title,
                 fileName: props.title,
-                lang: "en",
-                print: false,
+                lang: "zh",
+                print: false, // 禁用打印功能
                 watermarkOptions: undefined,
                 watermarkOptions: undefined,
                 customPdfOption: {
                 customPdfOption: {
                     // customPdfOption是 pdfjs getDocument 函数中一些配置参数 具体可参考 https://mozilla.github.io/pdf.js/api/draft/module-pdfjsLib.html#~DocumentInitParameters
                     // customPdfOption是 pdfjs getDocument 函数中一些配置参数 具体可参考 https://mozilla.github.io/pdf.js/api/draft/module-pdfjsLib.html#~DocumentInitParameters
                     cMapPacked: true, //指定 CMap 是否是二进制打包的
                     cMapPacked: true, //指定 CMap 是否是二进制打包的
                     cMapUrl: "https://cdn.jsdelivr.net/npm/pdfjs-dist@2.2.228/cmaps/", //预定义 Adob​​e CMaps 所在的 URL。可解决字体加载错误
                     cMapUrl: "https://cdn.jsdelivr.net/npm/pdfjs-dist@2.2.228/cmaps/", //预定义 Adob​​e CMaps 所在的 URL。可解决字体加载错误
                 },
                 },
+                // 禁用右键菜单和文本选择
+                selectConfig: undefined, // 禁用文本选择功能
             }
             }
         });
         });
+        
+        // 添加额外的事件监听器来防止长按保存
+        const pdfContainer = document.querySelector("#pdf-container");
+        if (pdfContainer) {
+            // 防止上下文菜单（右键菜单）
+            pdfContainer.addEventListener('contextmenu', (e) => {
+                e.preventDefault();
+                return false;
+            });
+            
+            // 防止长按选择
+            pdfContainer.addEventListener('selectstart', (e) => {
+                e.preventDefault();
+                return false;
+            });
+            
+            // 防止拖拽
+            pdfContainer.addEventListener('dragstart', (e) => {
+                e.preventDefault();
+                return false;
+            });
+        }
     });
     });
 };
 };
 </script>
 </script>
@@ -93,6 +117,49 @@ const initPdfViewer = () => {
     height: 100%;
     height: 100%;
 }
 }
 
 
+/* 防止PDF图片被长按保存的样式 */
+.pdf-no-select {
+    -webkit-user-select: none; /* Safari */
+    -moz-user-select: none; /* Firefox */
+    -ms-user-select: none; /* IE10+/Edge */
+    user-select: none; /* Standard */
+    -webkit-touch-callout: none; /* iOS Safari */
+    -webkit-tap-highlight-color: transparent; /* 移除点击高亮 */
+    pointer-events: auto; /* 保持可点击 */
+}
+
+/* 深度选择器，防止PDF内部图片被保存 */
+:deep(.pdf-no-select img) {
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    -webkit-touch-callout: none;
+    -webkit-tap-highlight-color: transparent;
+    pointer-events: none; /* 禁用图片的所有交互 */
+    -webkit-user-drag: none; /* 禁止拖拽 */
+    -khtml-user-drag: none;
+    -moz-user-drag: none;
+    -o-user-drag: none;
+    user-drag: none;
+}
+
+/* 防止右键菜单 */
+:deep(.pdf-no-select canvas) {
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    -webkit-touch-callout: none;
+    -webkit-tap-highlight-color: transparent;
+    pointer-events: none;
+    -webkit-user-drag: none;
+    -khtml-user-drag: none;
+    -moz-user-drag: none;
+    -o-user-drag: none;
+    user-drag: none;
+}
+
 .close-btn {
 .close-btn {
     position: fixed;
     position: fixed;
     right: 20px;
     right: 20px;