Initial commit

electron/services/pdfGenerator.ts

@@ -0,0 +1,46 @@
+import { BrowserWindow } from 'electron';
+
+/**
+ * 生成 PDF 的服务
+ * @param htmlContent 完整的 HTML 字符串
+ * @returns PDF 文件的二进制数据
+ */
+export async function generatePdf(htmlContent: string): Promise<Uint8Array> {
+  const printWin = new BrowserWindow({
+    show: false,
+    webPreferences: {
+      nodeIntegration: false,
+      contextIsolation: true,
+      sandbox: false, // 与 main.ts 保持一致，确保脚本执行权限
+    }
+  });
+
+  try {
+    await printWin.loadURL(`data:text/html;charset=utf-8,${encodeURIComponent(htmlContent)}`);
+    
+    // 等待资源加载完成 (由 generatePrintHtml 注入的脚本控制)
+    await printWin.webContents.executeJavaScript(`
+      new Promise(resolve => {
+        const check = () => {
+          if (window.__PRINT_READY__) {
+            resolve();
+          } else {
+            setTimeout(check, 100);
+          }
+        }
+        check();
+      })
+    `);
+
+    const pdfData = await printWin.webContents.printToPDF({
+      printBackground: true,
+      pageSize: 'A4',
+      margins: { top: 0, bottom: 0, left: 0, right: 0 }
+    });
+
+    return pdfData;
+  } finally {
+    // 确保窗口被关闭，防止内存泄漏
+    printWin.close();
+  }
+}