优化体检知情同意书列表打印

src/components/exam/ExamSignPanel.tsx

@@ -1,4 +1,6 @@
 import { useEffect, useRef, useState } from 'react';
+import * as pdfjsLib from 'pdfjs-dist';
+import pdfjsWorker from 'pdfjs-dist/build/pdf.worker.min.mjs?url';
 
 import type { OutputTongyishuFileInfo } from '../../api';
 import { getTongyishuPdf, signInMedicalExamCenter, submitTongyishuSign } from '../../api';
@@ -11,6 +13,22 @@ import {
 import type { SignaturePadHandle } from '../ui';
 import { Button, SignaturePad } from '../ui';
 
+// Polyfill for Promise.withResolvers
+if (typeof (Promise as any).withResolvers === 'undefined') {
+  (Promise as any).withResolvers = function <T>() {
+    let resolve!: (value: T | PromiseLike<T>) => void;
+    let reject!: (reason?: any) => void;
+    const promise = new Promise<T>((res, rej) => {
+      resolve = res;
+      reject = rej;
+    });
+    return { promise, resolve, reject };
+  };
+}
+
+// 配置 PDF.js worker
+pdfjsLib.GlobalWorkerOptions.workerSrc = pdfjsWorker;
+
 interface ExamSignPanelProps {
   examId?: number;
   onBusyChange?: (busy: boolean) => void;
@@ -32,7 +50,12 @@ export const ExamSignPanel = ({ examId, onBusyChange }: ExamSignPanelProps) => {
   const [submitLoading, setSubmitLoading] = useState(false);
   const [submitMessage, setSubmitMessage] = useState<string | null>(null);
   const [signedCombinationCodes, setSignedCombinationCodes] = useState<number[]>([]);
-  const busy = signLoading || submitLoading || consentLoading;
+  const [pdfData, setPdfData] = useState<ArrayBuffer | null>(null);
+  const [pdfReady, setPdfReady] = useState(false);
+  const [pdfLoading, setPdfLoading] = useState(false);
+  const [pdfBlobUrl, setPdfBlobUrl] = useState<string | null>(null);
+  const canvasContainerRef = useRef<HTMLDivElement>(null);
+  const busy = signLoading || submitLoading || consentLoading || pdfLoading;
 
   useEffect(() => {
     onBusyChange?.(busy);
@@ -259,6 +282,262 @@ export const ExamSignPanel = ({ examId, onBusyChange }: ExamSignPanelProps) => {
       .finally(() => setConsentLoading(false));
   }, [examId]);
 
+  // 加载 PDF 数据
+  useEffect(() => {
+    if (!previewPdf?.pdf_url) {
+      setPdfData(null);
+      setPdfBlobUrl(null);
+      setPdfReady(false);
+      return;
+    }
+
+    let objectUrl: string | null = null;
+    setPdfReady(false);
+    setPdfLoading(true);
+    setPdfData(null);
+
+    fetch(previewPdf.pdf_url)
+      .then((resp) => {
+        if (!resp.ok) throw new Error('获取PDF文件失败');
+        return resp.blob();
+      })
+      .then((blob) => {
+        objectUrl = URL.createObjectURL(blob);
+        setPdfBlobUrl(objectUrl);
+        return blob.arrayBuffer();
+      })
+      .then((arrayBuffer) => {
+        setPdfData(arrayBuffer);
+        setPdfLoading(false);
+      })
+      .catch((err) => {
+        console.error('PDF 拉取失败', err);
+        setPdfLoading(false);
+      });
+
+    return () => {
+      if (objectUrl) {
+        URL.revokeObjectURL(objectUrl);
+      }
+    };
+  }, [previewPdf?.pdf_url]);
+
+  // 渲染 PDF
+  useEffect(() => {
+    if (!pdfData || !canvasContainerRef.current) return;
+
+    setPdfReady(false);
+
+    const renderAllPages = async () => {
+      try {
+        const pdf = await pdfjsLib.getDocument({ data: pdfData }).promise;
+
+        if (!canvasContainerRef.current) return;
+
+        // 清空容器
+        canvasContainerRef.current.innerHTML = '';
+
+        const scale = 1.2;
+
+        for (let pageNum = 1; pageNum <= pdf.numPages; pageNum++) {
+          const page = await pdf.getPage(pageNum);
+          const viewport = page.getViewport({ scale });
+
+          const canvas = document.createElement('canvas');
+          const context = canvas.getContext('2d');
+
+          if (!context) continue;
+
+          canvas.height = viewport.height;
+          canvas.width = viewport.width;
+          canvas.style.display = 'block';
+          canvas.style.marginBottom = '10px';
+          canvas.className = 'mx-auto border rounded-lg shadow-sm';
+
+          canvasContainerRef.current.appendChild(canvas);
+
+          const renderContext = {
+            canvasContext: context,
+            viewport: viewport,
+          } as any;
+
+          await page.render(renderContext).promise;
+        }
+
+        setPdfReady(true);
+      } catch (err) {
+        console.error('PDF 渲染失败', err);
+        setPdfLoading(false);
+      }
+    };
+
+    renderAllPages();
+  }, [pdfData]);
+
+  const handlePrint = () => {
+    if (!pdfBlobUrl || !pdfReady || !canvasContainerRef.current) return;
+
+    // 创建打印窗口
+    const printWindow = window.open('', '_blank');
+    if (!printWindow) return;
+
+    // 获取所有的 canvas
+    const canvases = canvasContainerRef.current.querySelectorAll('canvas');
+
+    // 构建打印页面
+    printWindow.document.write(`
+      <!DOCTYPE html>
+      <html>
+        <head>
+          <title>知情同意书打印</title>
+          <style>
+            @media print {
+              body {
+                margin: 0;
+                padding: 0;
+              }
+              img {
+                max-width: 100%;
+                page-break-after: always;
+                page-break-inside: avoid;
+              }
+              img:last-child {
+                page-break-after: auto;
+              }
+            }
+            body {
+              margin: 0;
+              padding: 0;
+            }
+            img {
+              display: block;
+              width: 100%;
+              height: auto;
+            }
+          </style>
+        </head>
+        <body>
+    `);
+
+    // 将每个 canvas 转换为图片并添加到打印窗口
+    canvases.forEach((canvas) => {
+      const imgData = (canvas as HTMLCanvasElement).toDataURL('image/png');
+      printWindow.document.write(`<img src="${imgData}" />`);
+    });
+
+    printWindow.document.write(`
+        </body>
+      </html>
+    `);
+
+    printWindow.document.close();
+
+    // 等待图片加载完成后执行打印
+    printWindow.onload = () => {
+      printWindow.focus();
+      setTimeout(() => {
+        printWindow.print();
+      }, 1000);
+    };
+  };
+
+  const handleDirectPrint = async (pdfItem: OutputTongyishuFileInfo) => {
+    if (!pdfItem.pdf_url) return;
+
+    try {
+      // 加载PDF
+      const response = await fetch(pdfItem.pdf_url);
+      if (!response.ok) throw new Error('获取PDF文件失败');
+      const blob = await response.blob();
+      const arrayBuffer = await blob.arrayBuffer();
+
+      // 渲染PDF到临时canvas
+      const pdf = await pdfjsLib.getDocument({ data: arrayBuffer }).promise;
+      const scale = 1.2;
+      const canvasImages: string[] = [];
+
+      for (let pageNum = 1; pageNum <= pdf.numPages; pageNum++) {
+        const page = await pdf.getPage(pageNum);
+        const viewport = page.getViewport({ scale });
+
+        const canvas = document.createElement('canvas');
+        const context = canvas.getContext('2d');
+        if (!context) continue;
+
+        canvas.height = viewport.height;
+        canvas.width = viewport.width;
+
+        const renderContext = {
+          canvasContext: context,
+          viewport: viewport,
+        } as any;
+
+        await page.render(renderContext).promise;
+        canvasImages.push(canvas.toDataURL('image/png'));
+      }
+
+      // 创建打印窗口
+      const printWindow = window.open('', '_blank');
+      if (!printWindow) return;
+
+      printWindow.document.write(`
+        <!DOCTYPE html>
+        <html>
+          <head>
+            <title>${pdfItem.pdf_name || '知情同意书打印'}</title>
+            <style>
+              @media print {
+                body {
+                  margin: 0;
+                  padding: 0;
+                }
+                img {
+                  max-width: 100%;
+                  page-break-after: always;
+                  page-break-inside: avoid;
+                }
+                img:last-child {
+                  page-break-after: auto;
+                }
+              }
+              body {
+                margin: 0;
+                padding: 0;
+              }
+              img {
+                display: block;
+                width: 100%;
+                height: auto;
+              }
+            </style>
+          </head>
+          <body>
+      `);
+
+      canvasImages.forEach((imgData) => {
+        printWindow.document.write(`<img src="${imgData}" />`);
+      });
+
+      printWindow.document.write(`
+          </body>
+        </html>
+      `);
+
+      printWindow.document.close();
+
+      // 等待图片加载完成后执行打印
+      printWindow.onload = () => {
+        printWindow.focus();
+        setTimeout(() => {
+          printWindow.print();
+        }, 1000);
+      };
+    } catch (err) {
+      console.error('打印失败', err);
+      alert('打印失败，请稍后重试');
+    }
+  };
+
   return (
     <div className='grid grid-cols-2 gap-4 text-sm'>
       <div className='p-4 rounded-2xl border bg-gray-50/60 flex flex-col gap-3'>
@@ -313,10 +592,10 @@ export const ExamSignPanel = ({ examId, onBusyChange }: ExamSignPanelProps) => {
               {consentList.map((item) => (
                 <div
                   key={item.pdf_url || item.pdf_name}
-                  className='flex items-center justify-between gap-3 p-3 rounded-xl border bg-white shadow-sm'
+                  className='flex items-center justify-between gap-3 p-2 rounded-xl border bg-white shadow-sm'
                 >
                   <div className='text-sm text-gray-800 truncate flex items-center gap-2 relative pr-20'>
-                    <span className='truncate'>{item.pdf_name}</span>
+                    <span className='truncate'>{item.pdf_name.length > 12 ? item.pdf_name.slice(0, 12) + "..." : item.pdf_name}</span>
                     {item.combination_code !== undefined && signedCombinationCodes.includes(Number(item.combination_code)) && (
                       <img
                         src='/sign.png'
@@ -326,6 +605,36 @@ export const ExamSignPanel = ({ examId, onBusyChange }: ExamSignPanelProps) => {
                       />
                     )}
                   </div>
+                  <div className='flex items-center gap-2'>
+                    {item.combination_code !== undefined && signedCombinationCodes.includes(Number(item.combination_code)) && (
+                      <Button
+                        className='py-1.5 px-3 bg-blue-600 hover:bg-blue-700 text-white'
+                        onClick={() => {
+                          if (busy) return;
+                          let target = item;
+                          // 如果本地已保存签名后的PDF列表，则优先使用签名后的PDF地址
+                          if (examId) {
+                            const storedList = getTongyishuPdfList(examId);
+                            if (storedList && item.combination_code !== undefined && item.combination_code !== null) {
+                              const code = Number(item.combination_code);
+                              const matched = storedList.find(
+                                (pdf) => pdf.combination_code !== null && Number(pdf.combination_code) === code,
+                              );
+                              if (matched && matched.pdf_url) {
+                                target = {
+                                  ...item,
+                                  pdf_url: matched.pdf_url,
+                                };
+                              }
+                            }
+                          }
+                          handleDirectPrint(target);
+                        }}
+                        disabled={busy}
+                      >
+                        打印
+                      </Button>
+                    )}
                     <Button
                       className='py-1.5 px-3'
                       onClick={() => {
@@ -357,30 +666,53 @@ export const ExamSignPanel = ({ examId, onBusyChange }: ExamSignPanelProps) => {
                       查看
                     </Button>
                   </div>
+                </div>
               ))}
             </div>
           )}
         </div>
       </div>
-      {previewPdf && (
+      {
+        previewPdf && (
           <div className='fixed inset-0 z-[60] bg-black/75 flex flex-col'>
             <div className='flex items-center justify-between p-4 text-white bg-gray-900/80'>
               <div className='text-sm font-medium truncate pr-3'>{previewPdf.pdf_name}</div>
               <div className='flex items-center gap-2'>
+                <Button
+                  className='py-1 px-3 bg-blue-600 hover:bg-blue-700 text-white disabled:opacity-50 disabled:cursor-not-allowed'
+                  onClick={handlePrint}
+                  disabled={pdfLoading || !pdfReady || !pdfBlobUrl}
+                >
+                  打印
+                </Button>
                 <Button className='py-1 px-3' onClick={() => !busy && setShowSignature(true)} disabled={busy}>
-                签到
+                  签名
                 </Button>
                 <Button className='py-1 px-3' onClick={() => !busy && setPreviewPdf(null)} disabled={busy}>
                   关闭
                 </Button>
               </div>
             </div>
-          <div className='flex-1 bg-gray-100'>
+            <div className='flex-1 bg-gray-100 overflow-auto'>
-            <iframe src={previewPdf.pdf_url} title={previewPdf.pdf_name} className='w-full h-full' />
+              {pdfLoading ? (
+                <div className='flex items-center justify-center h-full text-white'>
+                  <div>正在加载PDF...</div>
                 </div>
+              ) : pdfData ? (
+                <div className='flex justify-center p-4'>
+                  <div ref={canvasContainerRef} className='w-full' />
+                </div>
+              ) : (
+                <div className='flex items-center justify-center h-full text-white'>
+                  <div>PDF加载失败</div>
                 </div>
               )}
-      {showSignature && (
+            </div>
+          </div>
+        )
+      }
+      {
+        showSignature && (
           <div className='fixed inset-0 z-[70] bg-black/80 flex items-center justify-center px-6'>
             <div className='bg-white rounded-2xl w-full max-w-3xl shadow-2xl p-4 flex flex-col gap-4'>
               <div className='flex items-center justify之间'>
@@ -428,7 +760,8 @@ export const ExamSignPanel = ({ examId, onBusyChange }: ExamSignPanelProps) => {
               </div>
             </div>
           </div>
-      )}
+        )
+      }
     </div >
   );
 };