{"id":107740,"date":"2026-09-20T07:48:33","date_gmt":"2026-09-19T23:48:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/107740.html"},"modified":"2026-09-20T07:48:33","modified_gmt":"2026-09-19T23:48:33","slug":"15-%e5%85%a8%e6%9c%ac%e5%9c%b0%e5%a4%84%e7%90%86%e6%9e%b6%e6%9e%84%e8%ae%be%e8%ae%a1%ef%bc%9a%e6%95%b0%e6%8d%ae%e4%b8%8d%e5%87%ba%e8%ae%be%e5%a4%87%e7%9a%84%e5%ae%89%e5%85%a8%e6%89%ab%e6%8f%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/107740.html","title":{"rendered":"15. \u5168\u672c\u5730\u5904\u7406\u67b6\u6784\u8bbe\u8ba1\uff1a\u6570\u636e\u4e0d\u51fa\u8bbe\u5907\u7684\u5b89\u5168\u626b\u63cf\u65b9\u6848"},"content":{"rendered":"

15. \u5168\u672c\u5730\u5904\u7406\u67b6\u6784\u8bbe\u8ba1：\u6570\u636e\u4e0d\u51fa\u8bbe\u5907\u7684\u5b89\u5168\u626b\u63cf\u65b9\u6848<\/h2>\n

\u5728\u6570\u636e\u9690\u79c1\u7126\u8651\u7684\u65f6\u4ee3，"\u5168\u7a0b\u672c\u5730\u5904\u7406"\u4e0d\u662f\u9526\u4e0a\u6dfb\u82b1\u7684\u529f\u80fd，\u800c\u662f\u6700\u5f3a\u7684\u5dee\u5f02\u5316\u62a4\u57ce\u6cb3\u3002\u5f53\u7ade\u54c1\u90fd\u5728\u7528\u4e91\u7aefAPI\u5904\u7406\u7528\u6237\u8bc1\u4ef6\u65f6，\u5b89\u5fc3\u626b\u63cf\u9009\u62e9\u4e86\u6700\u96be\u4f46\u6700\u6b63\u786e\u7684\u8def\u2014\u2014\u6240\u6709\u56fe\u50cf\u5904\u7406\u3001\u6240\u6709\u6570\u636e\u5b58\u50a8\u3001\u6240\u6709\u7b97\u6cd5\u8fd0\u7b97，\u5168\u90e8\u5728\u7528\u6237\u8bbe\u5907\u4e0a\u5b8c\u6210\u3002\u672c\u6587\u5b8c\u6574\u62c6\u89e3\u8fd9\u5957"\u6570\u636e\u4e0d\u51fa\u8bbe\u5907"\u7684\u67b6\u6784\u8bbe\u8ba1，\u4ece\u56db\u5c42\u5206\u5c42\u5230Provider\u62c6\u5206，\u4eceIsolate\u5f02\u6b65\u5230ScanDocument\u6301\u4e45\u5316\u3002<\/p>\n

\n

\u4e00\u3001\u4e3a\u4ec0\u4e48"\u5168\u7a0b\u672c\u5730\u5904\u7406"\u662f\u6700\u5f3a\u5dee\u5f02\u5316<\/h3>\n

1.1 \u5e02\u573a\u73b0\u72b6<\/h4>\n\n\u4ea7\u54c1\u56fe\u50cf\u5904\u7406\u4f4d\u7f6eOCR\u4f4d\u7f6e\u6570\u636e\u5b58\u50a8\u9690\u79c1\u98ce\u9669<\/tr>\n\n\n\n\n\n
CamScanner<\/td>\n\u4e91\u7aef<\/td>\n\u8054\u7f51\u4e91\u7aef<\/td>\n\u4e91\u7aef\u540c\u6b65<\/td>\n\u9ad8<\/td>\n<\/tr>\n
Adobe Scan<\/td>\n\u4e91\u7aef<\/td>\n\u4e91\u7aef<\/td>\nAdobe Cloud<\/td>\n\u9ad8<\/td>\n<\/tr>\n
\u767d\u63cf<\/td>\n\u672c\u5730<\/td>\n\u672c\u5730<\/td>\n\u672c\u5730<\/td>\n\u4f4e<\/td>\n<\/tr>\n
\u5b89\u5fc3\u626b\u63cf<\/td>\n\u672c\u5730<\/td>\n\u672c\u5730<\/td>\n\u672c\u5730<\/td>\n\u6700\u4f4e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7528\u6237\u5fc3\u7406： \u5f53\u7528\u6237\u626b\u63cf\u8eab\u4efd\u8bc1\u65f6，\u6700\u62c5\u5fc3\u7684\u4e0d\u662f"\u8bc6\u522b\u51c6\u4e0d\u51c6"，\u800c\u662f"\u6211\u7684\u8eab\u4efd\u8bc1\u7167\u7247\u4f1a\u4e0d\u4f1a\u6cc4\u9732"\u3002\u8fd9\u4e2a\u95ee\u9898，\u4e91\u7aef\u5904\u7406\u7684App\u65e0\u8bba\u600e\u4e48\u5199\u9690\u79c1\u653f\u7b56\u90fd\u65e0\u6cd5\u5b8c\u5168\u6d88\u9664\u2014\u2014\u56e0\u4e3a\u6570\u636e\u786e\u5b9e\u79bb\u5f00\u4e86\u8bbe\u5907\u3002\u5b89\u5fc3\u626b\u63cf\u4ece\u67b6\u6784\u5c42\u9762\u4fdd\u8bc1"\u6570\u636e\u4e0d\u51fa\u8bbe\u5907"，\u8fd9\u662f\u4fe1\u4efb\u7684\u6839\u57fa\u3002<\/p>\n

1.2 \u5168\u7a0b\u672c\u5730\u5904\u7406\u7684\u6280\u672f\u542b\u4e49<\/h4>\n

\u5168\u7a0b\u672c\u5730\u5904\u7406 = \u56fe\u50cf\u5904\u7406\u672c\u5730 + OCR\u672c\u5730 + \u5b58\u50a8\u672c\u5730 + \u65e0\u7f51\u7edc\u4f9d\u8d56<\/p>\n

\u56fe\u50cf\u5904\u7406\u672c\u5730 \u2192 image package\u7eafDart\u7b97\u6cd5，\u4e0d\u8c03\u4efb\u4f55\u4e91\u7aefAPI
\nOCR\u672c\u5730 \u2192 Tesseract\u5f15\u64ce\u5185\u7f6e，\u79bb\u7ebf\u8bc6\u522b
\n\u5b58\u50a8\u672c\u5730 \u2192 ScanDocument + session.json + \u56fe\u7247\u6587\u4ef6，\u5168\u5728\u5e94\u7528\u6c99\u76d2
\n\u65e0\u7f51\u7edc\u4f9d\u8d56 \u2192 \u6838\u5fc3\u529f\u80fd\u96f6\u7f51\u7edc\u8bf7\u6c42，\u98de\u884c\u6a21\u5f0f\u4e5f\u80fd\u7528<\/p>\n

\n

\u4e8c\u3001\u56db\u5c42\u67b6\u6784\u8bbe\u8ba1<\/h3>\n

2.1 \u67b6\u6784\u603b\u89c8<\/h4>\n

\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
\n\u2502 UI \u5c42 (Presentation) \u2502
\n\u2502 Screen + Widget + CustomPainter \u2502
\n\u2502 \u804c\u8d23：\u6e32\u67d3\u754c\u9762\u3001\u63a5\u6536\u7528\u6237\u4ea4\u4e92 \u2502
\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
\n\u2502 State \u5c42 (State Management) \u2502
\n\u2502 ScanProvider + RecentsProvider \u2502
\n\u2502 \u804c\u8d23：\u7ba1\u7406UI\u72b6\u6001\u3001\u534f\u8c03Service\u8c03\u7528\u3001notifyListeners\u2502
\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
\n\u2502 Service \u5c42 (Business Logic) \u2502
\n\u2502 StorageService + PdfExportService + OcrService \u2502
\n\u2502 + WatermarkService + IdCopyService \u2502
\n\u2502 \u804c\u8d23：\u4e1a\u52a1\u903b\u8f91\u7f16\u6392\u3001Isolate\u8c03\u5ea6\u3001\u6587\u4ef6I\/O \u2502
\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
\n\u2502 Algorithm \u5c42 (Core Algorithms) \u2502
\n\u2502 EdgeDetection + Perspective + Dewarp + Filters \u2502
\n\u2502 + ScanPipeline + SpotRemoval + IdComposer \u2502
\n\u2502 \u804c\u8d23：\u7eaf\u7b97\u6cd5\u5b9e\u73b0\u3001\u65e0\u72b6\u6001\u3001\u65e0\u526f\u4f5c\u7528 \u2502
\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

2.2 \u5c42\u95f4\u4f9d\u8d56\u89c4\u5219<\/h4>\n\n\u89c4\u5219\u8bf4\u660e<\/tr>\n\n\n\n\n\n
UI \u2192 State<\/td>\nUI\u901a\u8fc7Provider.of\/Consumer\u8bfb\u53d6\u72b6\u6001，\u901a\u8fc7Provider\u65b9\u6cd5\u89e6\u53d1\u64cd\u4f5c<\/td>\n<\/tr>\n
State \u2192 Service<\/td>\nState\u5c42\u8c03\u7528Service\u5c42\u5b8c\u6210\u4e1a\u52a1\u64cd\u4f5c<\/td>\n<\/tr>\n
Service \u2192 Algorithm<\/td>\nService\u5c42\u8c03\u7528Algorithm\u5c42\u6267\u884c\u5177\u4f53\u7b97\u6cd5<\/td>\n<\/tr>\n
\u7981\u6b62\u53cd\u5411\u4f9d\u8d56<\/td>\nAlgorithm\u5c42\u4e0d\u80fd\u5f15\u7528UI\u5c42，Service\u5c42\u4e0d\u80fd\u5f15\u7528State\u5c42<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6838\u5fc3\u539f\u5219：Algorithm\u5c42\u662f"\u65e0\u72b6\u6001\u7eaf\u51fd\u6570"\u5c42\u3002 \u6240\u6709\u7b97\u6cd5\u51fd\u6570\u53ea\u63a5\u6536\u8f93\u5165\u53c2\u6570\u3001\u8fd4\u56de\u8f93\u51fa\u7ed3\u679c，\u4e0d\u6301\u6709\u4efb\u4f55\u72b6\u6001\u3001\u4e0d\u4ea7\u751f\u526f\u4f5c\u7528\u3002\u8fd9\u4f7f\u5f97\u7b97\u6cd5\u53ef\u4ee5\u8f7b\u677e\u5730\u5728Isolate\u4e2d\u6267\u884c，\u4e5f\u65b9\u4fbf\u5355\u5143\u6d4b\u8bd5\u3002<\/p>\n

2.3 \u4ee3\u7801\u76ee\u5f55\u7ed3\u6784<\/h4>\n

lib\/
\n\u251c\u2500\u2500 main.dart # \u5165\u53e3（AnxinApp）
\n\u251c\u2500\u2500 core\/
\n\u2502 \u251c\u2500\u2500 app_theme.dart # \u4e3b\u9898\u7cfb\u7edf（\u9752\u7eff\u79cd\u5b50\u8272）
\n\u2502 \u251c\u2500\u2500 app_routes.dart # \u547d\u540d\u8def\u7531\u8868
\n\u2502 \u251c\u2500\u2500 image_math.dart # \u56fe\u50cf\u6570\u5b66\u5de5\u5177
\n\u2502 \u2514\u2500\u2500 preview_mapping.dart # \u9884\u89c8\u5750\u6807\u6620\u5c04
\n\u251c\u2500\u2500 models\/
\n\u2502 \u251c\u2500\u2500 scan_document.dart # ScanDocument + RecentEntry
\n\u2502 \u251c\u2500\u2500 document_page.dart # DocumentPage
\n\u2502 \u251c\u2500\u2500 page_settings.dart # PageSettings（\u6ee4\u955c\/\u88c1\u8fb9\u914d\u7f6e）
\n\u2502 \u2514\u2500\u2500 export_settings.dart # ExportSettings（\u5bfc\u51fa\u914d\u7f6e）
\n\u251c\u2500\u2500 providers\/
\n\u2502 \u251c\u2500\u2500 scan_provider.dart # \u5f53\u524d\u626b\u63cf\u4f1a\u8bdd + \u6700\u8fd1\u6587\u6863\u7d22\u5f15
\n\u2502 \u2514\u2500\u2500 recents_provider.dart # \u6700\u8fd1\u6587\u6863\u5217\u8868（\u4eceScanProvider\u62c6\u5206）
\n\u251c\u2500\u2500 services\/
\n\u2502 \u251c\u2500\u2500 storage_service.dart # \u672c\u5730\u5b58\u50a8（\u6c99\u76d2\u76ee\u5f55\u7ba1\u7406）
\n\u2502 \u251c\u2500\u2500 pdf_export_service.dart # PDF\u5bfc\u51fa
\n\u2502 \u251c\u2500\u2500 ocr_service.dart # \u79bb\u7ebfOCR
\n\u2502 \u251c\u2500\u2500 watermark_service.dart # \u6c34\u5370\u670d\u52a1
\n\u2502 \u251c\u2500\u2500 id_copy_service.dart # \u8bc1\u4ef6\u590d\u5370\u670d\u52a1
\n\u2502 \u251c\u2500\u2500 compress_service.dart # \u56fe\u7247\u538b\u7f29
\n\u2502 \u251c\u2500\u2500 photo_id_service.dart # \u8bc1\u4ef6\u7167\u670d\u52a1
\n\u2502 \u251c\u2500\u2500 pdf_encryption.dart # PDF\u52a0\u5bc6
\n\u2502 \u251c\u2500\u2500 export_flow.dart # \u5bfc\u51fa\u6d41\u7a0b\u7f16\u6392
\n\u2502 \u2514\u2500\u2500 processing\/
\n\u2502 \u251c\u2500\u2500 edge_detection.dart # \u8fb9\u7f18\u68c0\u6d4b（\u4e94\u7ea7\u63a9\u7801\u7ea7\u8054）
\n\u2502 \u251c\u2500\u2500 perspective.dart # \u900f\u89c6\u53d8\u6362
\n\u2502 \u251c\u2500\u2500 dewarp.dart # \u66f2\u9762\u5c55\u5e73
\n\u2502 \u251c\u2500\u2500 filters.dart # \u6ee4\u955c\u7ba1\u7ebf
\n\u2502 \u251c\u2500\u2500 scan_pipeline.dart # \u626b\u63cf\u5904\u7406\u7ba1\u7ebf
\n\u2502 \u251c\u2500\u2500 spot_removal.dart # \u6c61\u70b9\u53bb\u9664
\n\u2502 \u2514\u2500\u2500 id_composer.dart # \u8bc1\u4ef6A4\u5408\u6210
\n\u251c\u2500\u2500 screens\/
\n\u2502 \u251c\u2500\u2500 main_navigation.dart # \u5e95\u90e8\u4e09Tab\u5bfc\u822a\u58f3
\n\u2502 \u251c\u2500\u2500 home_screen.dart # \u9996\u9875
\n\u2502 \u251c\u2500\u2500 document_scan_screen.dart # \u626b\u63cf\u5165\u53e3
\n\u2502 \u251c\u2500\u2500 camera_screen.dart # \u76f8\u673a\u62cd\u6444
\n\u2502 \u251c\u2500\u2500 crop_screen.dart # \u88c1\u8fb9\u9875
\n\u2502 \u251c\u2500\u2500 enhance_screen.dart # \u589e\u5f3a\u6ee4\u955c
\n\u2502 \u251c\u2500\u2500 pages_screen.dart # \u591a\u9875\u7ba1\u7406
\n\u2502 \u251c\u2500\u2500 export_screen.dart # \u5bfc\u51fa\u8bbe\u7f6e
\n\u2502 \u251c\u2500\u2500 id_card_screen.dart # \u8bc1\u4ef6\u590d\u5370
\n\u2502 \u251c\u2500\u2500 photo_id_screen.dart # \u8bc1\u4ef6\u7167
\n\u2502 \u251c\u2500\u2500 text_extract_screen.dart # OCR\u6587\u5b57\u63d0\u53d6
\n\u2502 \u251c\u2500\u2500 compress_screen.dart # \u56fe\u7247\u538b\u7f29
\n\u2502 \u2514\u2500\u2500 watermark_screen.dart # \u6c34\u5370\u7f16\u8f91
\n\u2514\u2500\u2500 widgets\/
\n \u251c\u2500\u2500 corner_editor.dart # \u56db\u89d2\u62d6\u62fd\u7f16\u8f91\u5668
\n \u251c\u2500\u2500 image_viewer.dart # \u56fe\u7247\u67e5\u770b\u5668
\n \u251c\u2500\u2500 recent_docs_section.dart # \u6700\u8fd1\u6587\u6863\u533a\u5757
\n \u251c\u2500\u2500 media_source_sheet.dart # \u5a92\u4f53\u6765\u6e90\u9009\u62e9\u5f39\u5c42
\n \u251c\u2500\u2500 brush_canvas.dart # \u753b\u7b14\u753b\u5e03
\n \u2514\u2500\u2500 id_guides.dart # \u8bc1\u4ef6\u5f15\u5bfc\u6846<\/p>\n

\n

\u4e09\u3001Provider\u72b6\u6001\u7ba1\u7406\u62c6\u5206<\/h3>\n

3.1 God Object\u53cd\u6a21\u5f0f<\/h4>\n

\u5728\u9879\u76ee\u521d\u671f，\u6240\u6709\u72b6\u6001\u90fd\u585e\u8fdb\u4e86\u4e00\u4e2a ScanProvider\u2014\u2014\u5b83\u7ba1\u7406\u5f53\u524d\u4f1a\u8bdd\u3001\u6700\u8fd1\u6587\u6863\u5217\u8868\u3001\u56fe\u50cf\u5904\u7406\u7ed3\u679c\u3001\u7f29\u7565\u56fe\u7f13\u5b58\u3001\u5fd9\u788c\u6807\u8bb0\u2026\u2026\u6700\u7ec8\u8fd9\u4e2a\u7c7b\u627f\u62c5\u4e86\u8fc7\u591a\u804c\u8d23，\u4efb\u4f55\u4fee\u6539\u90fd\u6709\u53ef\u80fd\u5f15\u53d1\u8fde\u9501bug\u3002<\/p>\n

God Object\u7684\u75db\u82e6：<\/p>\n

ScanProvider
\n \u251c\u2500\u2500 \u5f53\u524d\u626b\u63cf\u4f1a\u8bdd CRUD
\n \u251c\u2500\u2500 \u6700\u8fd1\u6587\u6863\u5217\u8868
\n \u251c\u2500\u2500 \u56fe\u50cf\u5904\u7406\u7ed3\u679c\u7f13\u5b58
\n \u251c\u2500\u2500 \u7f29\u7565\u56fe\u751f\u6210
\n \u251c\u2500\u2500 \u5bfc\u51fa\u8bbe\u7f6e
\n \u251c\u2500\u2500 \u9875\u9762\u6392\u5e8f
\n \u2514\u2500\u2500 \u5fd9\u788c\/\u9519\u8bef\u72b6\u6001
\n \u2192 \u4fee\u6539\u4efb\u4f55\u4e00\u5904 \u2192 \u53ef\u80fd\u5f71\u54cd\u5176\u4ed6\u6240\u6709\u529f\u80fd
\n \u2192 notifyListeners()\u89e6\u53d1 \u2192 \u76f8\u5173UI\u5168\u90e8\u91cd\u7ed8<\/p>\n

3.2 \u62c6\u5206\u7b56\u7565<\/h4>\n

\u62c6\u5206\u540e\u7684Provider\u7ed3\u6784：<\/p>\n

ScanProvider（~260\u884c）
\n \u2192 \u804c\u8d23：\u5f53\u524d\u626b\u63cf\u4f1a\u8bdd\u7684 CRUD + \u6700\u8fd1\u6587\u6863\u7d22\u5f15\u7f13\u5b58
\n \u2192 \u7ba1\u7406：current (ScanDocument?)\u3001recents (List<RecentEntry>)\u3001busy
\n \u2192 \u65b9\u6cd5：newSession \/ loadSession \/ addCapturedImage \/ updatePage
\n removePage \/ reorderPages \/ ensureThumb \/ refreshThumb \/ deleteSession<\/p>\n

RecentsProvider（~30\u884c）
\n \u2192 \u804c\u8d23：\u6700\u8fd1\u6587\u6863\u5217\u8868\u5c55\u793a（\u4eceScanProvider\u62c6\u5206）
\n \u2192 \u7ba1\u7406：recents (List<RecentEntry>)
\n \u2192 \u65b9\u6cd5：init \/ refresh \/ deleteSession<\/p>\n

\u5173\u8054\u65b9\u5f0f：ScanProvider.linkRecents(RecentsProvider)
\n \u2192 ScanProvider\u64cd\u4f5c\u6587\u6863\u540e\u81ea\u52a8\u8c03\u7528 _recentsLink?.refresh()
\n \u2192 RecentsProvider\u72ec\u7acb\u7ba1\u7406\u81ea\u5df1\u7684UI\u5237\u65b0<\/p>\n

3.3 ScanProvider\u5b9e\u73b0<\/h4>\n

class<\/span> ScanProvider<\/span> extends<\/span> ChangeNotifier<\/span> {<\/span>
\n ScanDocument<\/span>?<\/span> current;<\/span>
\n List<\/span><<\/span>RecentEntry<\/span>><\/span><\/span> recents =<\/span> [<\/span>]<\/span>;<\/span>
\n bool busy =<\/span> false<\/span>;<\/span><\/p>\n

RecentsProvider<\/span>?<\/span> _recentsLink;<\/span><\/p>\n

\/\/ \u7f29\u7565\u56fe\u53bb\u91cd：\u6b63\u5728\u751f\u6210\u7684 id \u4e0e\u5df2\u786e\u8ba4\u5931\u8d25\u7684 id<\/span>
\n final<\/span> Set<\/span><<\/span>String<\/span>><\/span><\/span> _thumbInFlight =<\/span> {<\/span>}<\/span>;<\/span>
\n final<\/span> Set<\/span><<\/span>String<\/span>><\/span><\/span> _thumbFailed =<\/span> {<\/span>}<\/span>;<\/span><\/p>\n

ScanDocument<\/span> get<\/span> doc =<\/span>><\/span> current!<\/span>;<\/span><\/p>\n

\/\/\/ \u5efa\u7acb\u4e0e RecentsProvider \u7684\u8054\u52a8<\/span>
\n void<\/span> linkRecents<\/span>(<\/span>RecentsProvider<\/span> rp)<\/span> =<\/span>><\/span> _recentsLink =<\/span> rp;<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> init<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n try<\/span> {<\/span>
\n recents =<\/span> await<\/span> StorageService<\/span>.<\/span>loadIndex<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>
\n recents =<\/span> [<\/span>]<\/span>;<\/span>
\n }<\/span>
\n if<\/span> (<\/span>hasListeners)<\/span> notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u65b0\u5efa\u626b\u63cf\u4f1a\u8bdd<\/span>
\n Future<\/span><<\/span>void<\/span>><\/span><\/span> newSession<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n final<\/span> now =<\/span> DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>;<\/span>
\n current =<\/span> ScanDocument<\/span>(<\/span>
\n id:<\/span> '<\/span>${<\/span>now.<\/span>millisecondsSinceEpoch<\/span>}<\/span><\/span>'<\/span><\/span>,<\/span>
\n name:<\/span> '\u626b\u63cf\u6587\u6863_<\/span>${<\/span>_fmt<\/span>(<\/span>now)<\/span><\/span>}<\/span><\/span>'<\/span><\/span>,<\/span>
\n createdAt:<\/span> now,<\/span>
\n updatedAt:<\/span> now,<\/span>
\n )<\/span>;<\/span>
\n await<\/span> StorageService<\/span>.<\/span>saveSession<\/span>(<\/span>current!<\/span>)<\/span>;<\/span>
\n await<\/span> _refreshRecents<\/span>(<\/span>)<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u6e05\u9664\u5f53\u524d\u4f1a\u8bdd\u5f15\u7528（\u4fdd\u8bc1\u4e0b\u4e00\u6b21\u626b\u63cf\u521b\u5efa\u65b0\u6587\u6863）<\/span>
\n void<\/span> resetCurrent<\/span>(<\/span>)<\/span> {<\/span>
\n current =<\/span> null<\/span>;<\/span>
\n if<\/span> (<\/span>hasListeners)<\/span> notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u8f7d\u5165\u4f1a\u8bdd；\u6210\u529f\u8fd4\u56de true<\/span>
\n Future<\/span><<\/span>bool><\/span><\/span> loadSession<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n final<\/span> d =<\/span> await<\/span> StorageService<\/span>.<\/span>loadSession<\/span>(<\/span>id)<\/span>;<\/span>
\n if<\/span> (<\/span>d !=<\/span> null<\/span>)<\/span> {<\/span>
\n current =<\/span> d;<\/span>
\n await<\/span> _refreshRecents<\/span>(<\/span>)<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> true<\/span>;<\/span>
\n }<\/span>
\n current =<\/span> null<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> false<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u62cd\u6444\u5b8c\u6210：\u590d\u5236\u8fdb\u4f1a\u8bdd\u76ee\u5f55\u3001\u8bfb\u53d6\u5c3a\u5bf8\u3001\u81ea\u52a8\u8bc6\u522b\u56db\u89d2<\/span>
\n Future<\/span><<\/span>DocumentPage<\/span>><\/span><\/span> addCapturedImage<\/span>(<\/span>String<\/span> sourcePath,<\/span>
\n {<\/span>bool newDocument =<\/span> false<\/span>}<\/span>)<\/span> async<\/span> {<\/span>
\n busy =<\/span> true<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n try<\/span> {<\/span>
\n if<\/span> (<\/span>newDocument)<\/span> current =<\/span> null<\/span>;<\/span> \/\/ \u5f3a\u5236\u65b0\u6587\u6863<\/span>
\n if<\/span> (<\/span>current ==<\/span> null<\/span>)<\/span> await<\/span> newSession<\/span>(<\/span>)<\/span>;<\/span>
\n final<\/span> d =<\/span> current!<\/span>;<\/span>
\n final<\/span> pageId =<\/span> 'p_<\/span>${<\/span>DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>.<\/span>microsecondsSinceEpoch<\/span>}<\/span><\/span>'<\/span><\/span>;<\/span>
\n final<\/span> dest =<\/span> await<\/span> StorageService<\/span>.<\/span>copyToSession<\/span>(<\/span>
\n d.<\/span>id,<\/span> sourcePath,<\/span> 'orig_<\/span>$<\/span>pageId<\/span><\/span>.jpg'<\/span><\/span>)<\/span>;<\/span>
\n \/\/ Isolate\u4e2d\u8bfb\u53d6\u5c3a\u5bf8<\/span>
\n final<\/span> dims =<\/span> await<\/span> Isolate<\/span>.<\/span>run<\/span>(<\/span>(<\/span>)<\/span> {<\/span>
\n final<\/span> im =<\/span> decodeImageNormalized<\/span>(<\/span>File<\/span>(<\/span>dest)<\/span>.<\/span>readAsBytesSync<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
\n return<\/span> im ==<\/span> null<\/span> ?<\/span> const<\/span> (<\/span>0<\/span>,<\/span> 0<\/span>)<\/span> :<\/span> (<\/span>im.<\/span>width,<\/span> im.<\/span>height)<\/span>;<\/span>
\n }<\/span>)<\/span>;<\/span>
\n \/\/ Isolate\u4e2d\u68c0\u6d4b\u56db\u89d2<\/span>
\n List<\/span><<\/span>P2><\/span><\/span>?<\/span> corners;<\/span>
\n try<\/span> {<\/span>
\n corners =<\/span> await<\/span> Isolate<\/span>.<\/span>run<\/span>(<\/span>(<\/span>)<\/span> =<\/span>><\/span> detectDocumentCornersSync<\/span>(<\/span>dest)<\/span>)<\/span>;<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>}<\/span>
\n final<\/span> page =<\/span> DocumentPage<\/span>(<\/span>
\n id:<\/span> pageId,<\/span>
\n originalPath:<\/span> dest,<\/span>
\n originalWidth:<\/span> dims.<\/span>$1<\/span>,<\/span>
\n originalHeight:<\/span> dims.<\/span>$2<\/span>,<\/span>
\n settings:<\/span> PageSettings<\/span>(<\/span>
\n applyCrop:<\/span> false<\/span>,<\/span>
\n corners:<\/span> corners ?<\/span>?<\/span> defaultCorners<\/span>(<\/span>)<\/span>,<\/span>
\n useEnhance:<\/span> false<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>;<\/span>
\n d.<\/span>pages.<\/span>add<\/span>(<\/span>page)<\/span>;<\/span>
\n d.<\/span>updatedAt =<\/span> DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>;<\/span>
\n await<\/span> StorageService<\/span>.<\/span>saveSession<\/span>(<\/span>d)<\/span>;<\/span>
\n await<\/span> _refreshRecents<\/span>(<\/span>)<\/span>;<\/span>
\n \/\/ \u7acb\u5373\u751f\u6210\u7f29\u7565\u56fe：\u786e\u4fdd\u6700\u8fd1\u6587\u6863\u5217\u8868\u663e\u793a\u5904\u7406\u540e\u7f29\u7565\u56fe\u800c\u975e\u539f\u56fe<\/span>
\n await<\/span> ensureThumb<\/span>(<\/span>page)<\/span>;<\/span>
\n return<\/span> page;<\/span>
\n }<\/span> finally<\/span> {<\/span>
\n busy =<\/span> false<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span>
\n }<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> updatePage<\/span>(<\/span>DocumentPage<\/span> page)<\/span> async<\/span> {<\/span>
\n final<\/span> d =<\/span> current;<\/span>
\n if<\/span> (<\/span>d ==<\/span> null<\/span>)<\/span> return<\/span>;<\/span>
\n final<\/span> idx =<\/span> d.<\/span>pages.<\/span>indexWhere<\/span>(<\/span>(<\/span>e)<\/span> =<\/span>><\/span> e.<\/span>id ==<\/span> page.<\/span>id)<\/span>;<\/span>
\n if<\/span> (<\/span>idx >=<\/span> 0<\/span>)<\/span> {<\/span>
\n d.<\/span>pages[<\/span>idx]<\/span> =<\/span> page;<\/span>
\n d.<\/span>updatedAt =<\/span> DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>;<\/span>
\n await<\/span> StorageService<\/span>.<\/span>saveSession<\/span>(<\/span>d)<\/span>;<\/span>
\n await<\/span> _refreshRecents<\/span>(<\/span>)<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span>
\n }<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> removePage<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n final<\/span> d =<\/span> current;<\/span>
\n if<\/span> (<\/span>d ==<\/span> null<\/span>)<\/span> return<\/span>;<\/span>
\n d.<\/span>pages.<\/span>removeWhere<\/span>(<\/span>(<\/span>e)<\/span> =<\/span>><\/span> e.<\/span>id ==<\/span> id)<\/span>;<\/span>
\n d.<\/span>updatedAt =<\/span> DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>;<\/span>
\n await<\/span> StorageService<\/span>.<\/span>saveSession<\/span>(<\/span>d)<\/span>;<\/span>
\n await<\/span> _refreshRecents<\/span>(<\/span>)<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> reorderPages<\/span>(<\/span>int oldIndex,<\/span> int newIndex)<\/span> async<\/span> {<\/span>
\n final<\/span> d =<\/span> current;<\/span>
\n if<\/span> (<\/span>d ==<\/span> null<\/span>)<\/span> return<\/span>;<\/span>
\n final<\/span> e =<\/span> d.<\/span>pages.<\/span>removeAt<\/span>(<\/span>oldIndex)<\/span>;<\/span>
\n d.<\/span>pages.<\/span>insert<\/span>(<\/span>newIndex,<\/span> e)<\/span>;<\/span>
\n d.<\/span>updatedAt =<\/span> DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>;<\/span>
\n await<\/span> StorageService<\/span>.<\/span>saveSession<\/span>(<\/span>d)<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u751f\u6210\u7f29\u7565\u56fe\u5e76\u7f13\u5b58\u8def\u5f84（\u5217\u8868\u5c55\u793a\u7528）<\/span>
\n Future<\/span><<\/span>void<\/span>><\/span><\/span> ensureThumb<\/span>(<\/span>DocumentPage<\/span> page)<\/span> async<\/span> {<\/span>
\n if<\/span> (<\/span>page.<\/span>thumbPath !=<\/span> null<\/span> &&<\/span> File<\/span>(<\/span>page.<\/span>thumbPath!<\/span>)<\/span>.<\/span>existsSync<\/span>(<\/span>)<\/span>)<\/span> return<\/span>;<\/span>
\n if<\/span> (<\/span>_thumbInFlight.<\/span>contains<\/span>(<\/span>page.<\/span>id)<\/span> ||<\/span> _thumbFailed.<\/span>contains<\/span>(<\/span>page.<\/span>id)<\/span>)<\/span> {<\/span>
\n return<\/span>;<\/span>
\n }<\/span>
\n _thumbInFlight.<\/span>add<\/span>(<\/span>page.<\/span>id)<\/span>;<\/span>
\n try<\/span> {<\/span>
\n final<\/span> result =<\/span> await<\/span> processPageImage<\/span>(<\/span>
\n originalPath:<\/span> page.<\/span>originalPath,<\/span>
\n s:<\/span> page.<\/span>settings,<\/span>
\n maxDim:<\/span> 400<\/span>,<\/span>
\n jpegQuality:<\/span> 80<\/span>,<\/span>
\n )<\/span>;<\/span>
\n final<\/span> bytes =<\/span> result.<\/span>jpeg;<\/span>
\n if<\/span> (<\/span>bytes.<\/span>isEmpty)<\/span> {<\/span>
\n _thumbFailed.<\/span>add<\/span>(<\/span>page.<\/span>id)<\/span>;<\/span>
\n return<\/span>;<\/span>
\n }<\/span>
\n final<\/span> td =<\/span> await<\/span> StorageService<\/span>.<\/span>thumbsDir<\/span>(<\/span>)<\/span>;<\/span>
\n \/\/ \u7248\u672c\u5316\u6587\u4ef6\u540d：\u6bcf\u6b21\u91cd\u65b0\u751f\u6210\u7f29\u7565\u56fe\u4f7f\u7528\u65b0\u6587\u4ef6\u540d，<\/span>
\n \/\/ \u907f\u514d Image.file \u7f13\u5b58\u65e7\u56fe\u5bfc\u81f4\u7f29\u7565\u56fe\u4e0d\u5237\u65b0<\/span>
\n final<\/span> path =<\/span> p.<\/span>join<\/span>(<\/span>td.<\/span>path,<\/span> '<\/span>${<\/span>page.<\/span>id<\/span>}<\/span><\/span>_<\/span>${<\/span>DateTime<\/span>.<\/span>now<\/span>(<\/span>)<\/span>.<\/span>millisecondsSinceEpoch<\/span>}<\/span><\/span>.jpg'<\/span><\/span>)<\/span>;<\/span>
\n await<\/span> File<\/span>(<\/span>path)<\/span>.<\/span>writeAsBytes<\/span>(<\/span>bytes)<\/span>;<\/span>
\n page.<\/span>thumbPath =<\/span> path;<\/span>
\n await<\/span> updatePage<\/span>(<\/span>page)<\/span>;<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>
\n _thumbFailed.<\/span>add<\/span>(<\/span>page.<\/span>id)<\/span>;<\/span>
\n }<\/span> finally<\/span> {<\/span>
\n _thumbInFlight.<\/span>remove<\/span>(<\/span>page.<\/span>id)<\/span>;<\/span>
\n }<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u5237\u65b0\u7f29\u7565\u56fe：\u5220\u9664\u65e7\u7f13\u5b58\u540e\u91cd\u65b0\u751f\u6210（\u8bbe\u7f6e\u53d8\u66f4\u540e\u8c03\u7528）\u3002<\/span>
\n \/\/\/ \u4f7f\u7528\u7248\u672c\u5316\u6587\u4ef6\u540d\u786e\u4fdd Image.file \u4e0d\u4f1a\u7f13\u5b58\u65e7\u56fe\u3002<\/span>
\n Future<\/span><<\/span>void<\/span>><\/span><\/span> refreshThumb<\/span>(<\/span>DocumentPage<\/span> page)<\/span> async<\/span> {<\/span>
\n if<\/span> (<\/span>page.<\/span>thumbPath !=<\/span> null<\/span>)<\/span> {<\/span>
\n final<\/span> f =<\/span> File<\/span>(<\/span>page.<\/span>thumbPath!<\/span>)<\/span>;<\/span>
\n if<\/span> (<\/span>f.<\/span>existsSync<\/span>(<\/span>)<\/span>)<\/span> f.<\/span>deleteSync<\/span>(<\/span>)<\/span>;<\/span>
\n page.<\/span>thumbPath =<\/span> null<\/span>;<\/span>
\n }<\/span>
\n _thumbFailed.<\/span>remove<\/span>(<\/span>page.<\/span>id)<\/span>;<\/span>
\n await<\/span> ensureThumb<\/span>(<\/span>page)<\/span>;<\/span>
\n }<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> deleteSession<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n await<\/span> StorageService<\/span>.<\/span>deleteSession<\/span>(<\/span>id)<\/span>;<\/span>
\n if<\/span> (<\/span>current?<\/span>.<\/span>id ==<\/span> id)<\/span> current =<\/span> null<\/span>;<\/span>
\n await<\/span> _refreshRecents<\/span>(<\/span>)<\/span>;<\/span>
\n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> _refreshRecents<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n recents =<\/span> await<\/span> StorageService<\/span>.<\/span>loadIndex<\/span>(<\/span>)<\/span>;<\/span>
\n _recentsLink?<\/span>.<\/span>refresh<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

3.4 RecentsProvider\u5b9e\u73b0<\/h4>\n

\/\/\/ \u6700\u8fd1\u6587\u6863\u5217\u8868 Provider（\u4ece\u539f ScanProvider \u62c6\u5206）<\/span>
\nclass<\/span> RecentsProvider<\/span> extends<\/span> ChangeNotifier<\/span> {<\/span>
\n List<\/span><<\/span>RecentEntry<\/span>><\/span><\/span> recents =<\/span> [<\/span>]<\/span>;<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> init<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n try<\/span> {<\/span>
\n recents =<\/span> await<\/span> StorageService<\/span>.<\/span>loadIndex<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>
\n recents =<\/span> [<\/span>]<\/span>;<\/span>
\n }<\/span>
\n if<\/span> (<\/span>hasListeners)<\/span> notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u5237\u65b0\u6700\u8fd1\u6587\u6863\u5217\u8868<\/span>
\n Future<\/span><<\/span>void<\/span>><\/span><\/span> refresh<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n recents =<\/span> await<\/span> StorageService<\/span>.<\/span>loadIndex<\/span>(<\/span>)<\/span>;<\/span>
\n if<\/span> (<\/span>hasListeners)<\/span> notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

Future<\/span><<\/span>void<\/span>><\/span><\/span> deleteSession<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n await<\/span> StorageService<\/span>.<\/span>deleteSession<\/span>(<\/span>id)<\/span>;<\/span>
\n await<\/span> refresh<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

3.5 \u53cc\u5411\u540c\u6b65\u673a\u5236<\/h4>\n

\u53cc\u5411\u540c\u6b65\u6d41\u7a0b：<\/p>\n

\u7528\u6237\u5728ScanProvider\u4e2d\u6dfb\u52a0\u626b\u63cf\u9875
\n \u2192 ScanProvider.addCapturedImage()
\n \u2192 \u590d\u5236\u539f\u56fe\u5230\u4f1a\u8bdd\u76ee\u5f55
\n \u2192 \u68c0\u6d4b\u56db\u89d2\u3001\u521b\u5efaDocumentPage
\n \u2192 StorageService.saveSession(d)
\n \u2192 _refreshRecents()
\n \u2192 recents = StorageService.loadIndex()
\n \u2192 _recentsLink?.refresh()
\n \u2192 RecentsProvider.refresh()
\n \u2192 notifyListeners()
\n \u2192 \u6700\u8fd1\u6587\u6863\u5217\u8868UI\u81ea\u52a8\u5237\u65b0<\/p>\n

\u7528\u6237\u5728RecentsProvider\u4e2d\u5220\u9664\u6587\u6863
\n \u2192 RecentsProvider.deleteSession()
\n \u2192 StorageService.deleteSession(id)
\n \u2192 refresh()
\n \u2192 notifyListeners()
\n \u2192 \u6700\u8fd1\u6587\u6863\u5217\u8868UI\u81ea\u52a8\u5237\u65b0<\/p>\n

\u4e3a\u4ec0\u4e48\u7528\u53cc\u5411\u5f15\u7528\u800c\u975eEventBus？ \u5b89\u5fc3\u626b\u63cf\u7684Provider\u6570\u91cf\u6709\u9650（2\u4e2a\u6838\u5fc3Provider），\u53cc\u5411\u5f15\u7528（linkRecents()）\u4ee3\u7801\u6700\u76f4\u63a5\u3001\u8c03\u7528\u94fe\u6700\u77ed\u3001\u8c03\u8bd5\u6700\u7b80\u5355\u3002EventBus\u867d\u7136\u89e3\u8026，\u4f46\u5f15\u5165\u4e86"\u4e8b\u4ef6\u98ce\u66b4"\u98ce\u9669\u2014\u2014\u4e00\u4e2a\u4e8b\u4ef6\u53ef\u80fd\u89e6\u53d1\u591a\u4e2a\u76d1\u542c\u5668，\u96be\u4ee5\u8ffd\u8e2a\u6267\u884c\u987a\u5e8f\u3002\u5bf9\u4e8e\u5c0f\u89c4\u6a21App，\u663e\u5f0f\u8c03\u7528\u6bd4\u9690\u5f0f\u4e8b\u4ef6\u66f4\u53ef\u9760\u3002<\/p>\n

3.6 Provider\u6ce8\u518c\u4e0e\u5173\u8054<\/h4>\n

void<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
\n WidgetsFlutterBinding<\/span>.<\/span>ensureInitialized<\/span>(<\/span>)<\/span>;<\/span>
\n runApp<\/span>(<\/span>const<\/span> AnxinApp<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

class<\/span> AnxinApp<\/span> extends<\/span> StatefulWidget<\/span> {<\/span>
\n const<\/span> AnxinApp<\/span>(<\/span>{<\/span>super<\/span>.<\/span>key}<\/span>)<\/span>;<\/span><\/p>\n

@override<\/span>
\n State<\/span><<\/span>AnxinApp<\/span>><\/span><\/span> createState<\/span>(<\/span>)<\/span> =<\/span>><\/span> _AnxinAppState<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

class<\/span> _AnxinAppState extends<\/span> State<\/span><<\/span>AnxinApp<\/span>><\/span><\/span> {<\/span>
\n late final<\/span> RecentsProvider<\/span> _recents;<\/span>
\n late final<\/span> ScanProvider<\/span> _scan;<\/span><\/p>\n

@override<\/span>
\n void<\/span> initState<\/span>(<\/span>)<\/span> {<\/span>
\n super<\/span>.<\/span>initState<\/span>(<\/span>)<\/span>;<\/span>
\n _recents =<\/span> RecentsProvider<\/span>(<\/span>)<\/span>;<\/span>
\n _scan =<\/span> ScanProvider<\/span>(<\/span>)<\/span>;<\/span>
\n _scan.<\/span>linkRecents<\/span>(<\/span>_recents)<\/span>;<\/span>
\n _recents.<\/span>init<\/span>(<\/span>)<\/span>;<\/span>
\n _scan.<\/span>init<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@override<\/span>
\n void<\/span> dispose<\/span>(<\/span>)<\/span> {<\/span>
\n _recents.<\/span>dispose<\/span>(<\/span>)<\/span>;<\/span>
\n _scan.<\/span>dispose<\/span>(<\/span>)<\/span>;<\/span>
\n super<\/span>.<\/span>dispose<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@override<\/span>
\n Widget<\/span> build<\/span>(<\/span>BuildContext<\/span> context)<\/span> {<\/span>
\n return<\/span> MultiProvider<\/span>(<\/span>
\n providers:<\/span> [<\/span>
\n ChangeNotifierProvider<\/span><<\/span>RecentsProvider<\/span>><\/span><\/span>.<\/span>value<\/span>(<\/span>value:<\/span> _recents)<\/span>,<\/span>
\n ChangeNotifierProvider<\/span><<\/span>ScanProvider<\/span>><\/span><\/span>.<\/span>value<\/span>(<\/span>value:<\/span> _scan)<\/span>,<\/span>
\n ]<\/span>,<\/span>
\n child:<\/span> MaterialApp<\/span>(<\/span>
\n title:<\/span> '\u5b89\u5fc3\u626b\u63cf'<\/span><\/span>,<\/span>
\n debugShowCheckedModeBanner:<\/span> false<\/span>,<\/span>
\n theme:<\/span> AppTheme<\/span>.<\/span>light,<\/span>
\n darkTheme:<\/span> AppTheme<\/span>.<\/span>dark,<\/span>
\n themeMode:<\/span> ThemeMode<\/span>.<\/span>system,<\/span>
\n home:<\/span> const<\/span> MainNavigation<\/span>(<\/span>)<\/span>,<\/span>
\n routes:<\/span> AppRoutes<\/span>.<\/span>table,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\n

\u56db\u3001Isolate\u5f02\u6b65\u5904\u7406<\/h3>\n

4.1 \u91cd\u8ba1\u7b97\u7684\u573a\u666f<\/h4>\n\n\u64cd\u4f5c\u8ba1\u7b97\u91cf\u662f\u5426\u9700\u8981Isolate<\/tr>\n\n\n\n\n\n\n\n\n
\u8fb9\u7f18\u68c0\u6d4b（250px\u5b9e\u65f6）<\/td>\n\u5c0f<\/td>\n\u662f（~8ms，\u76f8\u673a\u5e27\u7528Isolate\u907f\u514d\u6389\u5e27）<\/td>\n<\/tr>\n
\u8fb9\u7f18\u68c0\u6d4b（500px\u79bb\u7ebf）<\/td>\n\u4e2d<\/td>\n\u662f（~30ms）<\/td>\n<\/tr>\n
\u900f\u89c6\u77eb\u6b63（\u5168\u5206\u8fa8\u7387）<\/td>\n\u4e2d<\/td>\n\u662f（~500ms）<\/td>\n<\/tr>\n
\u6ee4\u955c\u5904\u7406（\u5bfc\u51fa\u5206\u8fa8\u7387）<\/td>\n\u4e2d<\/td>\n\u662f（~400ms）<\/td>\n<\/tr>\n
A4\u5408\u6210（300dpi）<\/td>\n\u5927<\/td>\n\u662f（1.5s）<\/td>\n<\/tr>\n
OCR\u8bc6\u522b（\u5168\u9875）<\/td>\n\u5927<\/td>\n\u662f（2~5s）<\/td>\n<\/tr>\n
\u7f29\u7565\u56fe\u751f\u6210（400px）<\/td>\n\u5c0f<\/td>\n\u662f（\u5f02\u6b65\u4e0d\u5361UI）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4.2 Isolate\u4f7f\u7528\u65b9\u5f0f<\/h4>\n

\u5b89\u5fc3\u626b\u63cf\u76f4\u63a5\u4f7f\u7528Flutter\u5185\u7f6e\u7684 Isolate.run() \u65b9\u6cd5，\u5b83\u5c01\u88c5\u4e86Isolate\u7684\u521b\u5efa\u3001\u901a\u4fe1\u548c\u9500\u6bc1，\u5bf9\u7b80\u5355\u7684\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\u8db3\u591f\u65b9\u4fbf：<\/p>\n

\/\/ \u5c3a\u5bf8\u8bfb\u53d6<\/span>
\nfinal<\/span> dims =<\/span> await<\/span> Isolate<\/span>.<\/span>run<\/span>(<\/span>(<\/span>)<\/span> {<\/span>
\n final<\/span> im =<\/span> decodeImageNormalized<\/span>(<\/span>File<\/span>(<\/span>dest)<\/span>.<\/span>readAsBytesSync<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
\n return<\/span> im ==<\/span> null<\/span> ?<\/span> const<\/span> (<\/span>0<\/span>,<\/span> 0<\/span>)<\/span> :<\/span> (<\/span>im.<\/span>width,<\/span> im.<\/span>height)<\/span>;<\/span>
\n}<\/span>)<\/span>;<\/span><\/p>\n

\/\/ \u8fb9\u7f18\u68c0\u6d4b<\/span>
\nList<\/span><<\/span>P2><\/span><\/span>?<\/span> corners;<\/span>
\ntry<\/span> {<\/span>
\n corners =<\/span> await<\/span> Isolate<\/span>.<\/span>run<\/span>(<\/span>(<\/span>)<\/span> =<\/span>><\/span> detectDocumentCornersSync<\/span>(<\/span>dest)<\/span>)<\/span>;<\/span>
\n}<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>}<\/span><\/p>\n

\u5bf9\u4e8e\u5e26\u8fdb\u5ea6\u56de\u8c03\u7684\u590d\u6742\u4efb\u52a1（\u5982\u591a\u9875PDF\u5bfc\u51fa），\u91c7\u7528\u5faa\u73af+\u5355\u6b65Isolate\u7684\u65b9\u5f0f，\u6bcf\u5904\u7406\u4e00\u9875\u66f4\u65b0\u4e00\u6b21\u8fdb\u5ea6：<\/p>\n

\/\/\/ \u6309\u753b\u8d28\u5904\u7406\u6574\u4efd\u6587\u6863（\u5bfc\u51fa\u7528）<\/span>
\nFuture<\/span><<\/span>List<\/span><<\/span>PdfPageData<\/span>><\/span>><\/span><\/span> processAllForExport<\/span>(<\/span>
\n {<\/span>bool highQuality =<\/span> true<\/span>}<\/span>)<\/span> async<\/span> {<\/span>
\n final<\/span> d =<\/span> current;<\/span>
\n if<\/span> (<\/span>d ==<\/span> null<\/span>)<\/span> return<\/span> [<\/span>]<\/span>;<\/span>
\n final<\/span> maxDim =<\/span> highQuality ?<\/span> 2600<\/span> :<\/span> 1600<\/span>;<\/span>
\n final<\/span> quality =<\/span> highQuality ?<\/span> 92<\/span> :<\/span> 70<\/span>;<\/span>
\n final<\/span> results =<\/span> <<\/span>PdfPageData<\/span>><\/span><\/span>[<\/span>]<\/span>;<\/span>
\n for<\/span> (<\/span>final<\/span> page in<\/span> d.<\/span>pages)<\/span> {<\/span>
\n final<\/span> r =<\/span> await<\/span> processPageImage<\/span>(<\/span>
\n originalPath:<\/span> page.<\/span>originalPath,<\/span>
\n s:<\/span> page.<\/span>settings,<\/span>
\n maxDim:<\/span> maxDim,<\/span>
\n jpegQuality:<\/span> quality,<\/span>
\n )<\/span>;<\/span>
\n results.<\/span>add<\/span>(<\/span>(<\/span>jpeg:<\/span> r.<\/span>jpeg,<\/span> width:<\/span> r.<\/span>width,<\/span> height:<\/span> r.<\/span>height)<\/span>)<\/span>;<\/span>
\n }<\/span>
\n return<\/span> results;<\/span>
\n}<\/span><\/p>\n

\n

\u4e94\u3001ScanDocument\u6301\u4e45\u5316<\/h3>\n

5.1 \u6570\u636e\u6a21\u578b<\/h4>\n

\/\/\/ \u4e00\u4efd\u591a\u9875\u626b\u63cf\u6587\u6863（\u4f1a\u8bdd）<\/span>
\nclass<\/span> ScanDocument<\/span> {<\/span>
\n final<\/span> String<\/span> id;<\/span>
\n String<\/span> name;<\/span>
\n final<\/span> DateTime<\/span> createdAt;<\/span>
\n DateTime<\/span> updatedAt;<\/span>
\n List<\/span><<\/span>DocumentPage<\/span>><\/span><\/span> pages;<\/span>
\n ExportSettings<\/span> export<\/span>;<\/span><\/p>\n

ScanDocument<\/span>(<\/span>{<\/span>
\n required this<\/span>.<\/span>id,<\/span>
\n required this<\/span>.<\/span>name,<\/span>
\n required this<\/span>.<\/span>createdAt,<\/span>
\n required this<\/span>.<\/span>updatedAt,<\/span>
\n List<\/span><<\/span>DocumentPage<\/span>><\/span><\/span>?<\/span> pages,<\/span>
\n ExportSettings<\/span>?<\/span> export<\/span>,<\/span>
\n }<\/span>)<\/span> :<\/span> pages =<\/span> pages ?<\/span>?<\/span> [<\/span>]<\/span>,<\/span>
\n export<\/span> =<\/span> export<\/span> ?<\/span>?<\/span> ExportSettings<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>?<\/span>><\/span><\/span> toJson<\/span>(<\/span>)<\/span> =<\/span>><\/span> {<\/span>
\n 'id'<\/span><\/span>:<\/span> id,<\/span>
\n 'name'<\/span><\/span>:<\/span> name,<\/span>
\n 'createdAt'<\/span><\/span>:<\/span> createdAt.<\/span>millisecondsSinceEpoch,<\/span>
\n 'updatedAt'<\/span><\/span>:<\/span> updatedAt.<\/span>millisecondsSinceEpoch,<\/span>
\n 'pages'<\/span><\/span>:<\/span> [<\/span>for<\/span> (<\/span>final<\/span> p in<\/span> pages)<\/span> p.<\/span>toJson<\/span>(<\/span>)<\/span>]<\/span>,<\/span>
\n 'export'<\/span><\/span>:<\/span> export<\/span>.<\/span>toJson<\/span>(<\/span>)<\/span>,<\/span>
\n }<\/span>;<\/span><\/p>\n

factory<\/span> ScanDocument<\/span>.<\/span>fromJson<\/span>(<\/span>Map<\/span><<\/span>String<\/span>,<\/span> dynamic<\/span>><\/span><\/span> j)<\/span> =<\/span>><\/span> ScanDocument<\/span>(<\/span>
\n id:<\/span> j[<\/span>'id'<\/span><\/span>]<\/span> as<\/span> String<\/span>,<\/span>
\n name:<\/span> (<\/span>j[<\/span>'name'<\/span><\/span>]<\/span> as<\/span> String<\/span>?<\/span>)<\/span> ?<\/span>?<\/span> '\u626b\u63cf\u6587\u6863'<\/span><\/span>,<\/span>
\n createdAt:<\/span> DateTime<\/span>.<\/span>fromMillisecondsSinceEpoch<\/span>(<\/span>
\n (<\/span>(<\/span>j[<\/span>'createdAt'<\/span><\/span>]<\/span> as<\/span> num?<\/span>)<\/span> ?<\/span>?<\/span> 0<\/span>)<\/span>.<\/span>toInt<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
\n updatedAt:<\/span> DateTime<\/span>.<\/span>fromMillisecondsSinceEpoch<\/span>(<\/span>
\n (<\/span>(<\/span>j[<\/span>'updatedAt'<\/span><\/span>]<\/span> as<\/span> num?<\/span>)<\/span> ?<\/span>?<\/span> 0<\/span>)<\/span>.<\/span>toInt<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
\n pages:<\/span> [<\/span>
\n for<\/span> (<\/span>final<\/span> p in<\/span> (<\/span>j[<\/span>'pages'<\/span><\/span>]<\/span> as<\/span> List<\/span>?<\/span>)<\/span> ?<\/span>?<\/span> const<\/span> [<\/span>]<\/span>)<\/span>
\n DocumentPage<\/span>.<\/span>fromJson<\/span>(<\/span>(<\/span>p as<\/span> Map<\/span>)<\/span>.<\/span>cast<<\/span>String<\/span>,<\/span> dynamic<\/span>><\/span><\/span>(<\/span>)<\/span>)<\/span>,<\/span>
\n ]<\/span>,<\/span>
\n export<\/span>:<\/span> ExportSettings<\/span>.<\/span>fromJson<\/span>(<\/span>
\n (<\/span>(<\/span>j[<\/span>'export'<\/span><\/span>]<\/span> as<\/span> Map<\/span>?<\/span>)<\/span> ?<\/span>?<\/span> const<\/span> {<\/span>}<\/span>)<\/span>.<\/span>cast<<\/span>String<\/span>,<\/span> dynamic<\/span>><\/span><\/span>(<\/span>)<\/span>)<\/span>,<\/span>
\n )<\/span>;<\/span>
\n}<\/span><\/p>\n

\/\/\/ \u4e00\u4e2a\u626b\u63cf\u9875（\u4e00\u6b21\u62cd\u6444 + \u5176\u7f16\u8f91\u72b6\u6001）<\/span>
\nclass<\/span> DocumentPage<\/span> {<\/span>
\n final<\/span> String<\/span> id;<\/span>
\n final<\/span> String<\/span> originalPath;<\/span> \/\/ \u4f1a\u8bdd\u76ee\u5f55\u5185\u7684\u539f\u56fe<\/span>
\n final<\/span> int originalWidth,<\/span> originalHeight;<\/span>
\n String<\/span>?<\/span> processedPath;<\/span> \/\/ \u5904\u7406\u7ed3\u679c\u7f13\u5b58\u8def\u5f84<\/span>
\n int processedWidth =<\/span> 0<\/span>,<\/span> processedHeight =<\/span> 0<\/span>;<\/span>
\n String<\/span>?<\/span> thumbPath;<\/span> \/\/ \u7f29\u7565\u56fe\u8def\u5f84<\/span>
\n PageSettings<\/span> settings;<\/span> \/\/ \u6ee4\u955c\/\u88c1\u8fb9\u8bbe\u7f6e<\/span><\/p>\n

DocumentPage<\/span>(<\/span>{<\/span>
\n required this<\/span>.<\/span>id,<\/span>
\n required this<\/span>.<\/span>originalPath,<\/span>
\n required this<\/span>.<\/span>originalWidth,<\/span>
\n required this<\/span>.<\/span>originalHeight,<\/span>
\n PageSettings<\/span>?<\/span> settings,<\/span>
\n }<\/span>)<\/span> :<\/span> settings =<\/span> settings ?<\/span>?<\/span> PageSettings<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

\/\/ toJson \/ fromJson …<\/span>
\n}<\/span><\/p>\n

\/\/\/ \u9996\u9875\u300c\u6700\u8fd1\u6587\u6863\u300d\u6761\u76ee（\u8f7b\u91cf\u7d22\u5f15）<\/span>
\nclass<\/span> RecentEntry<\/span> {<\/span>
\n final<\/span> String<\/span> id;<\/span>
\n final<\/span> String<\/span> name;<\/span>
\n final<\/span> DateTime<\/span> updatedAt;<\/span>
\n final<\/span> int pageCount;<\/span>
\n final<\/span> String<\/span>?<\/span> coverPath;<\/span><\/p>\n

RecentEntry<\/span>(<\/span>{<\/span>.<\/span>.<\/span>.<\/span>}<\/span>)<\/span>;<\/span>
\n \/\/ toJson \/ fromJson …<\/span>
\n}<\/span><\/p>\n

5.2 \u6587\u4ef6\u7cfb\u7edf\u7ed3\u6784<\/h4>\n

\u5e94\u7528\u6c99\u7bb1 Documents\/
\n\u2514\u2500\u2500 scans\/ # \u626b\u63cf\u6587\u6863\u6839\u76ee\u5f55
\n \u251c\u2500\u2500 index.json # \u6700\u8fd1\u6587\u6863\u7d22\u5f15（\u81ea\u52a8\u91cd\u5efa）
\n \u251c\u2500\u2500 1697123456789\/ # \u6587\u6863ID（\u65f6\u95f4\u6233）
\n \u2502 \u251c\u2500\u2500 session.json # \u6587\u6863\u5143\u6570\u636e（\u539f\u5b50\u5199\u5165）
\n \u2502 \u251c\u2500\u2500 orig_p_xxx1.jpg # \u7b2c1\u9875\u539f\u56fe
\n \u2502 \u251c\u2500\u2500 orig_p_xxx2.jpg # \u7b2c2\u9875\u539f\u56fe
\n \u2502 \u2514\u2500\u2500 …
\n \u251c\u2500\u2500 1697124567890\/
\n \u2502 \u251c\u2500\u2500 session.json
\n \u2502 \u2514\u2500\u2500 …
\n \u2514\u2500\u2500 …<\/p>\n

\u5e94\u7528\u4e34\u65f6\u76ee\u5f55\/
\n\u251c\u2500\u2500 thumbs\/ # \u7f29\u7565\u56fe\u7f13\u5b58（\u5171\u4eab\u76ee\u5f55）
\n\u2502 \u251c\u2500\u2500 p_xxx1.jpg
\n\u2502 \u251c\u2500\u2500 p_xxx2.jpg
\n\u2502 \u2514\u2500\u2500 …
\n\u2514\u2500\u2500 idcard\/ # \u8bc1\u4ef6\u590d\u5370\u4e34\u65f6\u5de5\u4f5c\u76ee\u5f55
\n \u2514\u2500\u2500 id_xxx.jpg<\/p>\n

\u5e94\u7528\u6c99\u7bb1 Documents\/
\n\u2514\u2500\u2500 exports\/ # \u5bfc\u51fa\u6587\u4ef6\u7f13\u5b58\u76ee\u5f55<\/p>\n

\u5b58\u50a8\u4f4d\u7f6e\u8bf4\u660e： \u6587\u6863\u6570\u636e（\u539f\u56fe+session.json）\u5b58\u653e\u5728 getApplicationDocumentsDirectory() \u4e0b\u7684 scans\/ \u76ee\u5f55，\u5c5e\u4e8e\u5e94\u7528\u6301\u4e45\u5316\u79c1\u6709\u76ee\u5f55，\u7cfb\u7edf\u4e0d\u4f1a\u81ea\u52a8\u6e05\u7406\u3002\u7f29\u7565\u56fe\u5b58\u653e\u5728 getTemporaryDirectory() \u4e0b\u7684 thumbs\/ \u76ee\u5f55，\u7cfb\u7edf\u53ef\u80fd\u5728\u5b58\u50a8\u7a7a\u95f4\u4e0d\u8db3\u65f6\u6e05\u7406，\u4f46\u5220\u9664\u540e\u4f1a\u81ea\u52a8\u91cd\u65b0\u751f\u6210\u3002<\/p>\n

5.3 StorageService\u5b9e\u73b0<\/h4>\n

\/\/\/ \u672c\u5730\u5b58\u50a8：\u6240\u6709\u6570\u636e\u4ec5\u4fdd\u5b58\u5728\u5e94\u7528\u79c1\u6709\u6c99\u76d2\u76ee\u5f55，\u4e0d\u4e0a\u4e91\u3001\u4e0d\u5916\u53d1\u3002<\/span>
\nclass<\/span> StorageService<\/span> {<\/span>
\n \/\/\/ \u626b\u63cf\u6587\u6863\u6839\u76ee\u5f55（Documents\/scans\/）<\/span>
\n static<\/span> Future<\/span><<\/span>Directory<\/span>><\/span><\/span> scansRoot<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n final<\/span> docs =<\/span> await<\/span> getApplicationDocumentsDirectory<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> Directory<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>docs.<\/span>path,<\/span> 'scans'<\/span><\/span>)<\/span>)<\/span>.<\/span>create<\/span>(<\/span>recursive:<\/span> true<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u5bfc\u51fa\u6587\u4ef6\u6839\u76ee\u5f55（Documents\/exports\/）<\/span>
\n static<\/span> Future<\/span><<\/span>Directory<\/span>><\/span><\/span> exportsRoot<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n final<\/span> docs =<\/span> await<\/span> getApplicationDocumentsDirectory<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> Directory<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>docs.<\/span>path,<\/span> 'exports'<\/span><\/span>)<\/span>)<\/span>.<\/span>create<\/span>(<\/span>recursive:<\/span> true<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u5355\u4e2a\u6587\u6863\u76ee\u5f55<\/span>
\n static<\/span> Future<\/span><<\/span>Directory<\/span>><\/span><\/span> sessionDir<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n final<\/span> root =<\/span> await<\/span> scansRoot<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> Directory<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>root.<\/span>path,<\/span> id)<\/span>)<\/span>.<\/span>create<\/span>(<\/span>recursive:<\/span> true<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u7f29\u7565\u56fe\u76ee\u5f55（\u4e34\u65f6\u76ee\u5f55，\u7cfb\u7edf\u53ef\u6e05\u7406）<\/span>
\n static<\/span> Future<\/span><<\/span>Directory<\/span>><\/span><\/span> thumbsDir<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n final<\/span> t =<\/span> await<\/span> getTemporaryDirectory<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> Directory<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>t.<\/span>path,<\/span> 'thumbs'<\/span><\/span>)<\/span>)<\/span>.<\/span>create<\/span>(<\/span>recursive:<\/span> true<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u628a\u62cd\u6444\u7684\u7167\u7247\u590d\u5236\u8fdb\u4f1a\u8bdd\u79c1\u6709\u76ee\u5f55<\/span>
\n static<\/span> Future<\/span><<\/span>String<\/span>><\/span><\/span> copyToSession<\/span>(<\/span>
\n String<\/span> sessionId,<\/span> String<\/span> sourcePath,<\/span> String<\/span> fileName)<\/span> async<\/span> {<\/span>
\n final<\/span> dir =<\/span> await<\/span> sessionDir<\/span>(<\/span>sessionId)<\/span>;<\/span>
\n final<\/span> dest =<\/span> p.<\/span>join<\/span>(<\/span>dir.<\/span>path,<\/span> fileName)<\/span>;<\/span>
\n await<\/span> File<\/span>(<\/span>sourcePath)<\/span>.<\/span>copy<\/span>(<\/span>dest)<\/span>;<\/span>
\n return<\/span> dest;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u4fdd\u5b58\u6587\u6863（\u539f\u5b50\u5199\u5165：tmp + rename）<\/span>
\n static<\/span> Future<\/span><<\/span>void<\/span>><\/span><\/span> saveSession<\/span>(<\/span>ScanDocument<\/span> doc)<\/span> async<\/span> {<\/span>
\n final<\/span> dir =<\/span> await<\/span> sessionDir<\/span>(<\/span>doc.<\/span>id)<\/span>;<\/span>
\n final<\/span> target =<\/span> File<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>dir.<\/span>path,<\/span> 'session.json'<\/span><\/span>)<\/span>)<\/span>;<\/span>
\n final<\/span> tmp =<\/span> File<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>dir.<\/span>path,<\/span> 'session.json.tmp'<\/span><\/span>)<\/span>)<\/span>;<\/span>
\n \/\/ \u539f\u5b50\u66ff\u6362：\u5148\u5199\u4e34\u65f6\u6587\u4ef6\u518d rename，\u907f\u514d\u5199\u5230\u4e00\u534a\u88ab\u6740\u8fdb\u7a0b<\/span>
\n \/\/ \u7559\u4e0b\u534a\u622a session.json，\u5bfc\u81f4\u6587\u6863\u88ab\u5f53\u6210\u635f\u574f\u800c\u300c\u6d88\u5931\u300d\u3002<\/span>
\n await<\/span> tmp.<\/span>writeAsString<\/span>(<\/span>jsonEncode<\/span>(<\/span>doc.<\/span>toJson<\/span>(<\/span>)<\/span>)<\/span>)<\/span>;<\/span>
\n await<\/span> tmp.<\/span>rename<\/span>(<\/span>target.<\/span>path)<\/span>;<\/span>
\n await<\/span> _refreshIndex<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u52a0\u8f7d\u5355\u4e2a\u6587\u6863<\/span>
\n static<\/span> Future<\/span><<\/span>ScanDocument<\/span>?<\/span>><\/span><\/span> loadSession<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n final<\/span> dir =<\/span> await<\/span> sessionDir<\/span>(<\/span>id)<\/span>;<\/span>
\n final<\/span> f =<\/span> File<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>dir.<\/span>path,<\/span> 'session.json'<\/span><\/span>)<\/span>)<\/span>;<\/span>
\n if<\/span> (<\/span>!<\/span>await<\/span> f.<\/span>exists<\/span>(<\/span>)<\/span>)<\/span> return<\/span> null<\/span>;<\/span>
\n try<\/span> {<\/span>
\n final<\/span> map =<\/span> jsonDecode<\/span>(<\/span>await<\/span> f.<\/span>readAsString<\/span>(<\/span>)<\/span>)<\/span> as<\/span> Map<\/span><<\/span>String<\/span>,<\/span> dynamic<\/span>><\/span><\/span>;<\/span>
\n return<\/span> ScanDocument<\/span>.<\/span>fromJson<\/span>(<\/span>map)<\/span>;<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>
\n return<\/span> null<\/span>;<\/span>
\n }<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u5220\u9664\u6587\u6863（\u540c\u65f6\u6e05\u7406\u5171\u4eab\u7f29\u7565\u56fe）<\/span>
\n static<\/span> Future<\/span><<\/span>void<\/span>><\/span><\/span> deleteSession<\/span>(<\/span>String<\/span> id)<\/span> async<\/span> {<\/span>
\n \/\/ \u5148\u8bfb\u51fa\u4f1a\u8bdd\u4ee5\u6536\u96c6\u7f29\u7565\u56fe\u8def\u5f84（\u7f29\u7565\u56fe\u5728\u5171\u4eab thumbs \u76ee\u5f55，<\/span>
\n \/\/ \u4e0d\u968f\u4f1a\u8bdd\u76ee\u5f55\u5220\u9664，\u5426\u5219\u6c38\u4e45\u6cc4\u6f0f）\u3002<\/span>
\n try<\/span> {<\/span>
\n final<\/span> doc =<\/span> await<\/span> loadSession<\/span>(<\/span>id)<\/span>;<\/span>
\n if<\/span> (<\/span>doc !=<\/span> null<\/span>)<\/span> {<\/span>
\n for<\/span> (<\/span>final<\/span> page in<\/span> doc.<\/span>pages)<\/span> {<\/span>
\n final<\/span> tp =<\/span> page.<\/span>thumbPath;<\/span>
\n if<\/span> (<\/span>tp !=<\/span> null<\/span>)<\/span> {<\/span>
\n final<\/span> tf =<\/span> File<\/span>(<\/span>tp)<\/span>;<\/span>
\n if<\/span> (<\/span>await<\/span> tf.<\/span>exists<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
\n try<\/span> {<\/span> await<\/span> tf.<\/span>delete<\/span>(<\/span>)<\/span>;<\/span> }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>}<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>}<\/span>
\n final<\/span> dir =<\/span> await<\/span> sessionDir<\/span>(<\/span>id)<\/span>;<\/span>
\n if<\/span> (<\/span>await<\/span> dir.<\/span>exists<\/span>(<\/span>)<\/span>)<\/span> await<\/span> dir.<\/span>delete<\/span>(<\/span>recursive:<\/span> true<\/span>)<\/span>;<\/span>
\n await<\/span> _refreshIndex<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

\/\/\/ \u626b\u63cf\u4f1a\u8bdd\u76ee\u5f55\u91cd\u5efa\u300c\u6700\u8fd1\u6587\u6863\u300d\u7d22\u5f15（\u6bd4\u589e\u91cf\u7ef4\u62a4\u66f4\u53ef\u9760）<\/span>
\n static<\/span> Future<\/span><<\/span>List<\/span><<\/span>RecentEntry<\/span>><\/span>><\/span><\/span> loadIndex<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
\n final<\/span> root =<\/span> await<\/span> scansRoot<\/span>(<\/span>)<\/span>;<\/span>
\n final<\/span> entries =<\/span> <<\/span>RecentEntry<\/span>><\/span><\/span>[<\/span>]<\/span>;<\/span>
\n await<\/span> for<\/span> (<\/span>final<\/span> e in<\/span> root.<\/span>list<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
\n if<\/span> (<\/span>e is!<\/span> Directory<\/span>)<\/span> continue<\/span>;<\/span>
\n final<\/span> f =<\/span> File<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>e.<\/span>path,<\/span> 'session.json'<\/span><\/span>)<\/span>)<\/span>;<\/span>
\n if<\/span> (<\/span>!<\/span>await<\/span> f.<\/span>exists<\/span>(<\/span>)<\/span>)<\/span> continue<\/span>;<\/span>
\n try<\/span> {<\/span>
\n final<\/span> map =<\/span> jsonDecode<\/span>(<\/span>await<\/span> f.<\/span>readAsString<\/span>(<\/span>)<\/span>)<\/span> as<\/span> Map<\/span><<\/span>String<\/span>,<\/span> dynamic<\/span>><\/span><\/span>;<\/span>
\n final<\/span> doc =<\/span> ScanDocument<\/span>.<\/span>fromJson<\/span>(<\/span>map)<\/span>;<\/span>
\n entries.<\/span>add<\/span>(<\/span>RecentEntry<\/span>(<\/span>
\n id:<\/span> doc.<\/span>id,<\/span>
\n name:<\/span> doc.<\/span>name,<\/span>
\n updatedAt:<\/span> doc.<\/span>updatedAt,<\/span>
\n pageCount:<\/span> doc.<\/span>pages.<\/span>length,<\/span>
\n coverPath:<\/span> doc.<\/span>pages.<\/span>isNotEmpty
\n ?<\/span> (<\/span>doc.<\/span>pages.<\/span>first.<\/span>thumbPath ?<\/span>?<\/span> doc.<\/span>pages.<\/span>first.<\/span>originalPath)<\/span>
\n :<\/span> null<\/span>,<\/span>
\n )<\/span>)<\/span>;<\/span>
\n }<\/span> catch<\/span> (<\/span>_)<\/span> {<\/span>}<\/span>
\n }<\/span>
\n entries.<\/span>sort<\/span>(<\/span>(<\/span>a,<\/span> b)<\/span> =<\/span>><\/span> b.<\/span>updatedAt.<\/span>compareTo<\/span>(<\/span>a.<\/span>updatedAt)<\/span>)<\/span>;<\/span>
\n final<\/span> indexFile =<\/span> File<\/span>(<\/span>p.<\/span>join<\/span>(<\/span>root.<\/span>path,<\/span> 'index.json'<\/span><\/span>)<\/span>)<\/span>;<\/span>
\n await<\/span> indexFile.<\/span>writeAsString<\/span>(<\/span>jsonEncode<\/span>(<\/span>[<\/span>
\n for<\/span> (<\/span>final<\/span> e in<\/span> entries)<\/span> e.<\/span>toJson<\/span>(<\/span>)<\/span>,<\/span>
\n ]<\/span>)<\/span>)<\/span>;<\/span>
\n return<\/span> entries;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\u6301\u4e45\u5316\u8bbe\u8ba1\u8981\u70b9：<\/p>\n

  • \u539f\u5b50\u5199\u5165：session.json \u4f7f\u7528 \u201c\u5199\u4e34\u65f6\u6587\u4ef6 + rename\u201d \u7684\u539f\u5b50\u66ff\u6362\u7b56\u7565，\u907f\u514d\u8fdb\u7a0b\u88ab\u6740\u5bfc\u81f4\u6587\u4ef6\u635f\u574f\u3002<\/li>\n
  • \u7d22\u5f15\u91cd\u5efa：loadIndex() \u6bcf\u6b21\u90fd\u626b\u63cf\u6574\u4e2a scans \u76ee\u5f55\u91cd\u5efa\u7d22\u5f15，\u6bd4\u589e\u91cf\u7ef4\u62a4\u66f4\u53ef\u9760（\u4e0d\u6015\u5f02\u5e38\u64cd\u4f5c\u5bfc\u81f4\u7d22\u5f15\u4e0d\u4e00\u81f4）\u3002<\/li>\n
  • \u7f29\u7565\u56fe\u5206\u79bb：\u7f29\u7565\u56fe\u653e\u5728\u4e34\u65f6\u76ee\u5f55\u7684\u5171\u4eab thumbs \u6587\u4ef6\u5939，\u4e0d\u968f\u4f1a\u8bdd\u76ee\u5f55\u5220\u9664，\u5220\u9664\u6587\u6863\u65f6\u9700\u5355\u72ec\u6e05\u7406\u4ee5\u9632\u6cc4\u6f0f\u3002<\/li>\n
  • \u65f6\u95f4\u6233\u5b58\u50a8：\u65e5\u671f\u65f6\u95f4\u4f7f\u7528 millisecondsSinceEpoch \u5b58\u50a8，\u6bd4 ISO8601 \u5b57\u7b26\u4e32\u66f4\u7d27\u51d1\u3001\u89e3\u6790\u66f4\u5feb\u3002<\/li>\n
  • \u7f29\u7565\u56fe\u7248\u672c\u5316\u6587\u4ef6\u540d：ensureThumb \u751f\u6210\u7f29\u7565\u56fe\u65f6\u4f7f\u7528 ${page.id}_${timestamp}.jpg \u547d\u540d，\u800c\u975e\u56fa\u5b9a ${page.id}.jpg\u3002\u6bcf\u6b21 refreshThumb \u91cd\u65b0\u751f\u6210\u65f6\u4ea7\u751f\u65b0\u6587\u4ef6\u540d，Image.file \u56e0\u8def\u5f84\u53d8\u5316\u800c\u7ed5\u8fc7\u7f13\u5b58\u52a0\u8f7d\u65b0\u56fe，\u89e3\u51b3\u7f16\u8f91\u540e\u7f29\u7565\u56fe\u4e0d\u5237\u65b0\u7684\u95ee\u9898\u3002\u65e7\u7f29\u7565\u56fe\u6587\u4ef6\u7531 refreshThumb \u663e\u5f0f\u5220\u9664\u3002<\/li>\n
  • \u7f29\u7565\u56fe\u5373\u65f6\u751f\u6210：addCapturedImage \u5728\u4fdd\u5b58\u4f1a\u8bdd\u540e\u7acb\u5373\u8c03\u7528 ensureThumb(page)，\u786e\u4fdd loadIndex() \u65f6 thumbPath \u5df2\u6709\u503c，coverPath \u4e0d\u4f1a\u56de\u9000\u5230 originalPath（\u539f\u56fe\u8def\u5f84），\u6700\u8fd1\u6587\u6863\u5217\u8868\u59cb\u7ec8\u663e\u793a\u5904\u7406\u540e\u7f29\u7565\u56fe\u3002<\/li>\n
    \n

    \u516d\u3001\u5e95\u90e8\u4e09Tab\u5bfc\u822a（MainNavigation）<\/h3>\n

    6.1 \u4e3a\u4ec0\u4e48\u7528IndexedStack\u800c\u975ePageView<\/h4>\n\n\u65b9\u6848\u4fdd\u72b6\u6001\u5207\u6362\u52a8\u753b\u5185\u5b58\u63a8\u8350\u5ea6<\/tr>\n\n\n\n\n
    IndexedStack<\/td>\n\u5168\u90e8Tab\u4fdd\u72b6\u6001<\/td>\n\u65e0<\/td>\n\u9ad8（\u6240\u6709Tab\u540c\u65f6\u6784\u5efa）<\/td>\n\u63a8\u8350<\/td>\n<\/tr>\n
    PageView<\/td>\n\u5168\u90e8\u4fdd\u72b6\u6001<\/td>\n\u6709\u6ed1\u52a8<\/td>\n\u4e2d<\/td>\n\u53ef\u9009<\/td>\n<\/tr>\n
    Navigator\u8def\u7531<\/td>\n\u4e0d\u4fdd\u72b6\u6001<\/td>\n\u6709<\/td>\n\u4f4e<\/td>\n\u4e0d\u63a8\u8350<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u5b89\u5fc3\u626b\u63cf\u9009IndexedStack\u7684\u539f\u56e0： \u626b\u63cf\u9875\u9762\u5305\u542b\u76f8\u673a\u9884\u89c8\u3001\u5b9e\u65f6\u8fb9\u7f18\u8ffd\u8e2a\u3001\u5df2\u626b\u63cf\u9875\u5217\u8868，\u8fd9\u4e9b\u72b6\u6001\u4e00\u65e6\u9500\u6bc1\u91cd\u5efa，\u7528\u6237\u4f53\u9a8c\u6781\u5dee（\u76f8\u673a\u91cd\u65b0\u521d\u59cb\u5316\u9700\u89812~3\u79d2）\u3002IndexedStack\u867d\u7136\u6240\u6709Tab\u540c\u65f6\u5b58\u5728\u4e8e\u5185\u5b58\u4e2d，\u4f46\u80fd\u5b8c\u7f8e\u4fdd\u6301\u6bcf\u4e2aTab\u7684\u72b6\u6001\u3002<\/p>\n

    6.2 MainNavigation\u5b9e\u73b0<\/h4>\n

    \/\/ main_navigation.dart – \u5e95\u90e8\u4e09Tab\u5bfc\u822a\u58f3<\/span>
    \nclass<\/span> MainNavigation<\/span> extends<\/span> StatefulWidget<\/span> {<\/span>
    \n const<\/span> MainNavigation<\/span>(<\/span>{<\/span>super<\/span>.<\/span>key}<\/span>)<\/span>;<\/span><\/p>\n

    @override<\/span>
    \n State<\/span><<\/span>MainNavigation<\/span>><\/span><\/span> createState<\/span>(<\/span>)<\/span> =<\/span>><\/span> _MainNavigationState<\/span>(<\/span>)<\/span>;<\/span>
    \n}<\/span><\/p>\n

    class<\/span> _MainNavigationState extends<\/span> State<\/span><<\/span>MainNavigation<\/span>><\/span><\/span> {<\/span>
    \n int _currentIndex =<\/span> 0<\/span>;<\/span><\/p>\n

    final<\/span> List<\/span><<\/span>Widget<\/span>><\/span><\/span> _tabs =<\/span> [<\/span>
    \n const<\/span> HomeScreen<\/span>(<\/span>)<\/span>,<\/span> \/\/ \u9996\u9875Tab<\/span>
    \n const<\/span> ToolsScreen<\/span>(<\/span>)<\/span>,<\/span> \/\/ \u5de5\u5177Tab<\/span>
    \n const<\/span> DocumentsScreen<\/span>(<\/span>)<\/span>,<\/span> \/\/ \u6587\u6863Tab<\/span>
    \n ]<\/span>;<\/span><\/p>\n

    @override<\/span>
    \n Widget<\/span> build<\/span>(<\/span>BuildContext<\/span> context)<\/span> {<\/span>
    \n return<\/span> Scaffold<\/span>(<\/span>
    \n body:<\/span> IndexedStack<\/span>(<\/span>
    \n index:<\/span> _currentIndex,<\/span>
    \n children:<\/span> _tabs,<\/span>
    \n )<\/span>,<\/span>
    \n bottomNavigationBar:<\/span> NavigationBar<\/span>(<\/span>
    \n selectedIndex:<\/span> _currentIndex,<\/span>
    \n onDestinationSelected:<\/span> (<\/span>i)<\/span> {<\/span>
    \n setState<\/span>(<\/span>(<\/span>)<\/span> =<\/span>><\/span> _currentIndex =<\/span> i)<\/span>;<\/span>
    \n }<\/span>,<\/span>
    \n destinations:<\/span> const<\/span> [<\/span>
    \n NavigationDestination<\/span>(<\/span>
    \n icon:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>home_outlined)<\/span>,<\/span>
    \n selectedIcon:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>home)<\/span>,<\/span>
    \n label:<\/span> '\u9996\u9875'<\/span><\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n NavigationDestination<\/span>(<\/span>
    \n icon:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>build_outlined)<\/span>,<\/span>
    \n selectedIcon:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>build)<\/span>,<\/span>
    \n label:<\/span> '\u5de5\u5177'<\/span><\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n NavigationDestination<\/span>(<\/span>
    \n icon:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>folder_outlined)<\/span>,<\/span>
    \n selectedIcon:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>folder)<\/span>,<\/span>
    \n label:<\/span> '\u6587\u6863'<\/span><\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n ]<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n )<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    6.3 \u591a\u9875\u7ba1\u7406\u9875\u5e95\u90e8\u6309\u94ae\u8bbe\u8ba1<\/h4>\n

    \u591a\u9875\u7ba1\u7406\u9875（PagesScreen）\u5e95\u90e8\u8bbe\u8ba1\u4e86\u4e09\u4e2a\u7b49\u5bbd\u6309\u94ae，\u7edf\u4e00\u9ad8\u5ea6\u548c\u6587\u6848\u957f\u5ea6：<\/p>\n

    bottomNavigationBar:<\/span> SafeArea<\/span>(<\/span>
    \n child:<\/span> Padding<\/span>(<\/span>
    \n padding:<\/span> const<\/span> EdgeInsets<\/span>.<\/span>fromLTRB<\/span>(<\/span>12<\/span>,<\/span> 8<\/span>,<\/span> 12<\/span>,<\/span> 8<\/span>)<\/span>,<\/span>
    \n child:<\/span> Row<\/span>(<\/span>
    \n children:<\/span> [<\/span>
    \n \/\/ \u62cd\u6444：\u8df3\u8f6c\u8fde\u7eed\u62cd\u6444\u76f8\u673a<\/span>
    \n Expanded<\/span>(<\/span>child:<\/span> SizedBox<\/span>(<\/span>
    \n height:<\/span> 44<\/span>,<\/span>
    \n child:<\/span> OutlinedButton<\/span>.<\/span>icon<\/span>(<\/span>
    \n style:<\/span> OutlinedButton<\/span>.<\/span>styleFrom<\/span>(<\/span>
    \n padding:<\/span> const<\/span> EdgeInsets<\/span>.<\/span>symmetric<\/span>(<\/span>horizontal:<\/span> 8<\/span>)<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n icon:<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>photo_camera_rounded,<\/span> size:<\/span> 20<\/span>)<\/span>,<\/span>
    \n label:<\/span> const<\/span> Text<\/span>(<\/span>'\u62cd\u6444'<\/span><\/span>,<\/span> style:<\/span> TextStyle<\/span>(<\/span>fontSize:<\/span> 13<\/span>)<\/span>)<\/span>,<\/span>
    \n onPressed:<\/span> (<\/span>)<\/span> =<\/span>><\/span> Navigator<\/span>.<\/span>push<\/span>(<\/span>
    \n MaterialPageRoute<\/span>(<\/span>builder:<\/span> (<\/span>_)<\/span> =<\/span>><\/span>
    \n const<\/span> CameraScreen<\/span>(<\/span>continuous:<\/span> true<\/span>,<\/span> newDocument:<\/span> false<\/span>)<\/span>)<\/span>)<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n )<\/span>)<\/span>,<\/span>
    \n const<\/span> SizedBox<\/span>(<\/span>width:<\/span> 8<\/span>)<\/span>,<\/span>
    \n \/\/ \u76f8\u518c：\u591a\u9009\u5bfc\u5165，\u8ffd\u52a0\u5230\u5f53\u524d\u6587\u6863<\/span>
    \n Expanded<\/span>(<\/span>child:<\/span> SizedBox<\/span>(<\/span>
    \n height:<\/span> 44<\/span>,<\/span>
    \n child:<\/span> OutlinedButton<\/span>.<\/span>icon<\/span>(<\/span>
    \n icon:<\/span> _importing
    \n ?<\/span> const<\/span> SizedBox<\/span>(<\/span>width:<\/span> 16<\/span>,<\/span> height:<\/span> 16<\/span>,<\/span>
    \n child:<\/span> CircularProgressIndicator<\/span>(<\/span>strokeWidth:<\/span> 2<\/span>)<\/span>)<\/span>
    \n :<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>photo_library_rounded,<\/span> size:<\/span> 20<\/span>)<\/span>,<\/span>
    \n label:<\/span> Text<\/span>(<\/span>_importing ?<\/span> '\u5bfc\u5165\u4e2d'<\/span><\/span> :<\/span> '\u76f8\u518c'<\/span><\/span>,<\/span>
    \n style:<\/span> const<\/span> TextStyle<\/span>(<\/span>fontSize:<\/span> 13<\/span>)<\/span>)<\/span>,<\/span>
    \n onPressed:<\/span> _importing ?<\/span> null<\/span> :<\/span> (<\/span>)<\/span> =<\/span>><\/span> _importFromGallery<\/span>(<\/span>)<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n )<\/span>)<\/span>,<\/span>
    \n const<\/span> SizedBox<\/span>(<\/span>width:<\/span> 8<\/span>)<\/span>,<\/span>
    \n \/\/ \u5bfc\u51fa：\u8df3\u8f6c\u5bfc\u51fa\u9875<\/span>
    \n Expanded<\/span>(<\/span>child:<\/span> SizedBox<\/span>(<\/span>
    \n height:<\/span> 44<\/span>,<\/span>
    \n child:<\/span> FilledButton<\/span>.<\/span>icon<\/span>(<\/span>
    \n style:<\/span> FilledButton<\/span>.<\/span>styleFrom<\/span>(<\/span>
    \n padding:<\/span> const<\/span> EdgeInsets<\/span>.<\/span>symmetric<\/span>(<\/span>horizontal:<\/span> 8<\/span>)<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n icon:<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>picture_as_pdf_rounded,<\/span> size:<\/span> 20<\/span>)<\/span>,<\/span>
    \n label:<\/span> const<\/span> Text<\/span>(<\/span>'\u5bfc\u51fa'<\/span><\/span>,<\/span> style:<\/span> TextStyle<\/span>(<\/span>fontSize:<\/span> 13<\/span>)<\/span>)<\/span>,<\/span>
    \n onPressed:<\/span> (<\/span>)<\/span> =<\/span>><\/span> Navigator<\/span>.<\/span>push<\/span>(<\/span>
    \n MaterialPageRoute<\/span>(<\/span>builder:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> ExportScreen<\/span>(<\/span>)<\/span>)<\/span>)<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n )<\/span>)<\/span>,<\/span>
    \n ]<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n )<\/span>,<\/span>
    \n)<\/span>,<\/span><\/p>\n

    \u6309\u94ae\u8bbe\u8ba1\u539f\u5219：\u4e09\u4e2a\u6309\u94ae\u7edf\u4e00 height: 44 + padding: horizontal: 8 + fontSize: 13 + \u7b80\u77ed\u6587\u6848（\u201c\u62cd\u6444\u201d\/\u201c\u76f8\u518c\u201d\/\u201c\u5bfc\u51fa\u201d），\u7b49\u5bbd\u5747\u5206\u3002<\/p>\n

    6.4 \u4ece\u76f8\u518c\u591a\u9009\u5bfc\u5165<\/h4>\n

    \u591a\u9875\u7ba1\u7406\u9875\u548c\u626b\u63cf\u5165\u53e3\u9875\u90fd\u652f\u6301\u4ece\u76f8\u518c\u591a\u9009\u56fe\u7247，\u5408\u5e76\u4e3a\u540c\u4e00\u4e2a\u6587\u6863\u7684\u591a\u9875：<\/p>\n

    Future<\/span><<\/span>void<\/span>><\/span><\/span> _importFromGallery<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
    \n final<\/span> pickedList =<\/span> await<\/span> ImagePicker<\/span>(<\/span>)<\/span>
    \n .<\/span>pickMultiImage<\/span>(<\/span>requestFullMetadata:<\/span> false<\/span>)<\/span>;<\/span>
    \n if<\/span> (<\/span>pickedList.<\/span>isEmpty)<\/span> return<\/span>;<\/span><\/p>\n

    final<\/span> provider =<\/span> context.<\/span>read<<\/span>ScanProvider<\/span>><\/span><\/span>(<\/span>)<\/span>;<\/span>
    \n for<\/span> (<\/span>var<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> pickedList.<\/span>length;<\/span> i++<\/span>)<\/span> {<\/span>
    \n final<\/span> normalized =<\/span> await<\/span> importPickedImage<\/span>(<\/span>pickedList[<\/span>i]<\/span>.<\/span>path)<\/span>;<\/span>
    \n if<\/span> (<\/span>normalized ==<\/span> null<\/span>)<\/span> continue<\/span>;<\/span>
    \n \/\/ \u7b2c\u4e00\u5f20\u521b\u5efa\u65b0\u6587\u6863，\u540e\u7eed\u8ffd\u52a0\u4e3a\u540c\u4e00\u6587\u6863\u7684\u591a\u9875<\/span>
    \n await<\/span> provider.<\/span>addCapturedImage<\/span>(<\/span>normalized,<\/span> newDocument:<\/span> i ==<\/span> 0<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n \/\/ \u76f4\u63a5\u8df3\u8f6c\u5230\u591a\u9875\u7ba1\u7406\u9875<\/span>
    \n navigator.<\/span>pushReplacement<\/span>(<\/span>
    \n MaterialPageRoute<\/span>(<\/span>builder:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> PagesScreen<\/span>(<\/span>)<\/span>)<\/span>)<\/span>;<\/span>
    \n}<\/span><\/p>\n

    \u4e1a\u52a1\u903b\u8f91\u8981\u70b9：\u591a\u56fe\u5bfc\u5165\u4e0e\u8fde\u7eed\u62cd\u6444\u884c\u4e3a\u4e00\u81f4\u2014\u2014\u7b2c\u4e00\u5f20 newDocument: true \u521b\u5efa\u65b0\u6587\u6863，\u540e\u7eed newDocument: false \u8ffd\u52a0\u5230\u5f53\u524d\u6587\u6863\u3002\u5bfc\u5165\u5b8c\u6210\u540e\u76f4\u63a5\u8df3\u8f6c\u5230\u591a\u9875\u7ba1\u7406\u9875，\u7528\u6237\u53ef\u9010\u9875\u7f16\u8f91\u88c1\u8fb9\/\u6ee4\u955c\u3002<\/p>\n

    \n

    \u4e03\u3001\u547d\u540d\u8def\u7531\u8868\u96c6\u4e2d\u7ba1\u7406<\/h3>\n

    7.1 \u8def\u7531\u8868\u8bbe\u8ba1<\/h4>\n

    \/\/\/ \u547d\u540d\u8def\u7531\u8868：\u96c6\u4e2d\u7ba1\u7406\u6240\u6709\u9875\u9762\u8def\u7531<\/span>
    \n\/\/\/ \u8def\u7531\u540d\u79f0\u6309\u529f\u80fd\u57df\u5206\u7ec4，\u4f7f\u7528 \/ \u5206\u9694\u547d\u540d\u7a7a\u95f4\u3002<\/span>
    \nclass<\/span> AppRoutes<\/span> {<\/span>
    \n \/\/ \u529f\u80fd\u57df<\/span>
    \n static<\/span> const<\/span> scan =<\/span> '\/scan'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> tools =<\/span> '\/tools'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> docs =<\/span> '\/docs'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> settings =<\/span> '\/settings'<\/span><\/span>;<\/span><\/p>\n

    \/\/ \u626b\u63cf\u6d41\u7a0b<\/span>
    \n static<\/span> const<\/span> documentScan =<\/span> '\/scan\/document'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> camera =<\/span> '\/scan\/camera'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> crop =<\/span> '\/scan\/crop'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> enhance =<\/span> '\/scan\/enhance'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> pages =<\/span> '\/scan\/pages'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> export<\/span> =<\/span> '\/scan\/export'<\/span><\/span>;<\/span><\/p>\n

    \/\/ \u5de5\u5177<\/span>
    \n static<\/span> const<\/span> idCard =<\/span> '\/tools\/idcard'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> photoId =<\/span> '\/tools\/photoid'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> ocr =<\/span> '\/tools\/ocr'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> compress =<\/span> '\/tools\/compress'<\/span><\/span>;<\/span>
    \n static<\/span> const<\/span> watermark =<\/span> '\/tools\/watermark'<\/span><\/span>;<\/span><\/p>\n

    static<\/span> Map<\/span><<\/span>String<\/span>,<\/span> WidgetBuilder<\/span>><\/span><\/span> get<\/span> table =<\/span>><\/span> {<\/span>
    \n documentScan:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> DocumentScanScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n camera:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> CameraScreen<\/span>(<\/span>continuous:<\/span> true<\/span>,<\/span> newDocument:<\/span> true<\/span>)<\/span>,<\/span>
    \n pages:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> PagesScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n export<\/span>:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> ExportScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n idCard:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> IdCardScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n photoId:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> PhotoIdScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n ocr:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> TextExtractScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n compress:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> CompressScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n watermark:<\/span> (<\/span>_)<\/span> =<\/span>><\/span> const<\/span> WatermarkScreen<\/span>(<\/span>)<\/span>,<\/span>
    \n }<\/span>;<\/span><\/p>\n

    \/\/\/ \u5feb\u6377 push<\/span>
    \n static<\/span> Future<\/span><<\/span>T<\/span>?<\/span>><\/span><\/span> push<<\/span>T<\/span>><\/span><\/span>(<\/span>BuildContext<\/span> context,<\/span> String<\/span> routeName,<\/span>
    \n {<\/span>Object<\/span>?<\/span> arguments}<\/span>)<\/span> {<\/span>
    \n return<\/span> Navigator<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>.<\/span>pushNamed<<\/span>T<\/span>><\/span><\/span>(<\/span>routeName,<\/span> arguments:<\/span> arguments)<\/span>;<\/span>
    \n }<\/span><\/p>\n

    \/\/\/ \u5feb\u6377 pushReplacement<\/span>
    \n static<\/span> Future<\/span><<\/span>T<\/span>?<\/span>><\/span><\/span> pushReplacement<<\/span>T<\/span>><\/span><\/span>(<\/span>BuildContext<\/span> context,<\/span> String<\/span> routeName,<\/span>
    \n {<\/span>Object<\/span>?<\/span> arguments}<\/span>)<\/span> {<\/span>
    \n return<\/span> Navigator<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>.<\/span>pushReplacementNamed<<\/span>T<\/span>,<\/span> dynamic<\/span>><\/span><\/span>(<\/span>
    \n routeName,<\/span> arguments:<\/span> arguments)<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    7.2 \u5e26\u53c2\u6570\u7684\u8def\u7531\u8df3\u8f6c<\/h4>\n

    \/\/ \u7b80\u5355\u8df3\u8f6c<\/span>
    \nAppRoutes<\/span>.<\/span>push<\/span>(<\/span>context,<\/span> AppRoutes<\/span>.<\/span>enhance)<\/span>;<\/span><\/p>\n

    \/\/ \u5e26\u53c2\u6570\u8df3\u8f6c<\/span>
    \nNavigator<\/span>.<\/span>pushNamed<\/span>(<\/span>
    \n context,<\/span>
    \n AppRoutes<\/span>.<\/span>crop,<\/span>
    \n arguments:<\/span> {<\/span>'pageId'<\/span><\/span>:<\/span> page.<\/span>id}<\/span>,<\/span>
    \n)<\/span>;<\/span><\/p>\n

    \/\/ \u5728\u76ee\u6807\u9875\u9762\u63a5\u6536\u53c2\u6570<\/span>
    \nclass<\/span> CropScreen<\/span> extends<\/span> StatelessWidget<\/span> {<\/span>
    \n const<\/span> CropScreen<\/span>(<\/span>{<\/span>super<\/span>.<\/span>key}<\/span>)<\/span>;<\/span><\/p>\n

    @override<\/span>
    \n Widget<\/span> build<\/span>(<\/span>BuildContext<\/span> context)<\/span> {<\/span>
    \n final<\/span> args =<\/span> ModalRoute<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>?<\/span>.<\/span>settings.<\/span>arguments
    \n as<\/span> Map<\/span><<\/span>String<\/span>,<\/span> dynamic<\/span>><\/span><\/span>?<\/span>;<\/span>
    \n final<\/span> pageId =<\/span> args?<\/span>[<\/span>'pageId'<\/span><\/span>]<\/span> as<\/span> String<\/span>?<\/span>;<\/span>
    \n \/\/ …<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u96c6\u4e2d\u7ba1\u7406\u7684\u597d\u5904： \u8def\u7531\u540d\u7edf\u4e00\u5b9a\u4e49\u5728 AppRoutes \u5e38\u91cf\u4e2d，\u6309\u529f\u80fd\u57df\u5206\u7ec4（\/scan\/*\u3001\/tools\/*），IDE\u53ef\u4ee5\u81ea\u52a8\u8865\u5168，\u907f\u514d\u62fc\u5199\u9519\u8bef\u3002\u65b0\u589e\u9875\u9762\u53ea\u9700\u5728\u5e38\u91cf\u548ctable\u4e2d\u5404\u52a0\u4e00\u884c，\u4e00\u76ee\u4e86\u7136\u3002<\/p>\n

    \n

    \u516b\u3001God Object\u91cd\u6784\u7ecf\u9a8c\u603b\u7ed3<\/h3>\n

    8.1 \u91cd\u6784\u524d\u540e\u5bf9\u6bd4<\/h4>\n\n\u6307\u6807\u91cd\u6784\u524d（God Object）\u91cd\u6784\u540e（\u62c6\u5206Provider）<\/tr>\n\n\n\n\n\n\n\n
    \u6700\u5927\u7c7b\u884c\u6570<\/td>\n400+\u884c<\/td>\nScanProvider ~260\u884c<\/td>\n<\/tr>\n
    <\/td>\n<\/td>\nRecentsProvider ~30\u884c<\/td>\n<\/tr>\n
    \u5355\u6b21notifyListeners\u5f71\u54cd\u8303\u56f4<\/td>\n\u5168App<\/td>\n\u5355\u4e00\u529f\u80fd\u57df<\/td>\n<\/tr>\n
    \u4fee\u6539\u4e00\u4e2a\u529f\u80fd\u7684bug\u98ce\u9669<\/td>\n\u53ef\u80fd\u5f71\u54cd\u5176\u4ed6\u529f\u80fd<\/td>\n\u9694\u79bb<\/td>\n<\/tr>\n
    \u5355\u5143\u6d4b\u8bd5\u96be\u5ea6<\/td>\n\u9ad8（\u9700\u8981mock\u5168\u90e8\u4f9d\u8d56）<\/td>\n\u4f4e（\u53eamock StorageService）<\/td>\n<\/tr>\n
    \u65b0\u6210\u5458\u4e0a\u624b\u96be\u5ea6<\/td>\n\u9ad8（\u9700\u7406\u89e3\u5168\u90e8\u72b6\u6001）<\/td>\n\u4f4e（\u5404Provider\u804c\u8d23\u6e05\u6670）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    8.2 \u91cd\u6784\u539f\u5219<\/h4>\n

    God Object\u62c6\u5206\u4e09\u539f\u5219：<\/p>\n

    1. \u5355\u4e00\u804c\u8d23\u539f\u5219
    \n \u2192 \u4e00\u4e2aProvider\u53ea\u7ba1\u4e00\u4e2a\u529f\u80fd\u57df
    \n \u2192 ScanProvider\u7ba1"\u5f53\u524d\u626b\u63cf\u4f1a\u8bdd"，RecentsProvider\u7ba1"\u6700\u8fd1\u6587\u6863\u5217\u8868"<\/p>\n

    2. \u72b6\u6001\u5f52\u5c5e\u539f\u5219
    \n \u2192 \u8c01\u7684UI\u7528\u8c01\u7684\u72b6\u6001
    \n \u2192 \u9996\u9875\u6700\u8fd1\u6587\u6863\u5f52RecentsProvider，\u4e0d\u5f52ScanProvider<\/p>\n

    3. \u6700\u5c0f\u901a\u77e5\u539f\u5219
    \n \u2192 notifyListeners\u53ea\u901a\u77e5\u5173\u5fc3\u81ea\u5df1\u7684UI
    \n \u2192 \u907f\u514d\u4e00\u4e2aProvider\u7684notify\u89e6\u53d1\u5168App\u91cd\u7ed8<\/p>\n

    \u91cd\u6784\u65f6\u673a： \u4e0d\u8981\u7b49\u5230400\u884c\u624d\u62c6\u3002\u5f53\u4e00\u4e2aProvider\u8d85\u8fc7300\u884c，\u6216\u8005\u5b83\u7ba1\u7406\u4e863\u4e2a\u4ee5\u4e0a\u4e0d\u76f8\u5173\u7684\u72b6\u6001\u57df\u65f6，\u5c31\u5e94\u8be5\u62c6\u5206\u4e86\u3002\u65e9\u62c6\u6bd4\u665a\u62c6\u5bb9\u6613\u5f97\u591a\u2014\u2014\u540e\u671f\u62c6\u5206\u9700\u8981\u5904\u7406\u5927\u91cf\u5df2\u6709\u5f15\u7528\u3002<\/p>\n

    \n

    \u4e5d\u3001\u67b6\u6784\u5b89\u5168\u5206\u6790<\/h3>\n

    9.1 \u6570\u636e\u6d41\u5411\u56fe<\/h4>\n

    \u7528\u6237\u62cd\u6444\u6587\u6863
    \n \u2192 \u539f\u56fe\u5b58\u5165\u5e94\u7528\u6c99\u76d2 Documents\/scans\/（\u4e0d\u51fa\u8bbe\u5907）
    \n \u2192 Isolate\u5904\u7406（\u5185\u5b58\u4e2d，\u4e0d\u4f20\u7f51\u7edc）
    \n \u2192 \u5904\u7406\u7ed3\u679c\u5b58\u56de\u4f1a\u8bdd\u76ee\u5f55
    \n \u2192 UI\u4ece\u8bbe\u5907\u8bfb\u53d6\u5c55\u793a
    \n \u2192 \u7528\u6237\u5bfc\u51fa（\u53ef\u9009，\u7528\u6237\u4e3b\u52a8\u64cd\u4f5c）<\/p>\n

    \u5168\u7a0b\u96f6\u7f51\u7edc\u8bf7\u6c42：
    \n \u2192 \u65e0\u56fe\u7247\u4e0a\u4f20
    \n \u2192 \u65e0OCR API\u8c03\u7528
    \n \u2192 \u65e0\u4e91\u7aef\u540c\u6b65
    \n \u2192 \u65e0\u5206\u6790\u6570\u636e\u4e0a\u62a5<\/p>\n

    9.2 \u5b89\u5168\u4fdd\u969c\u63aa\u65bd<\/h4>\n\n\u63aa\u65bd\u5b9e\u73b0\u6548\u679c<\/tr>\n\n\n\n\n\n\n\n
    \u6570\u636e\u4e0d\u51fa\u8bbe\u5907<\/td>\n\u6240\u6709\u5904\u7406\u5728Isolate\u5185\u5b58\u4e2d<\/td>\n\u5373\u4f7f\u6293\u5305\u4e5f\u770b\u4e0d\u5230\u56fe\u7247\u6570\u636e<\/td>\n<\/tr>\n
    \u65e0\u7f51\u7edc\u6743\u9650<\/td>\n\u6838\u5fc3\u529f\u80fd\u4e0d\u8bf7\u6c42INTERNET<\/td>\n\u98de\u884c\u6a21\u5f0f\u5b8c\u5168\u53ef\u7528<\/td>\n<\/tr>\n
    \u8bbe\u5907\u6c99\u76d2\u5b58\u50a8<\/td>\nScanDocument\u5728App\u79c1\u6709Documents\u76ee\u5f55<\/td>\n\u5176\u4ed6App\u65e0\u6cd5\u8bfb\u53d6<\/td>\n<\/tr>\n
    \u65e0\u7b2c\u4e09\u65b9SDK<\/td>\n\u4e0d\u5f15\u5165\u4efb\u4f55\u5206\u6790\/\u5e7f\u544aSDK<\/td>\n\u51cf\u5c11\u6570\u636e\u6cc4\u9732\u9762<\/td>\n<\/tr>\n
    \u65e0\u4e91\u540c\u6b65<\/td>\n\u4e0d\u5b9e\u73b0\u4efb\u4f55\u4e91\u7aef\u5907\u4efd<\/td>\n\u6570\u636e\u53ea\u5b58\u5728\u4e00\u4efd（\u672c\u5730）<\/td>\n<\/tr>\n
    \u539f\u5b50\u5199\u5165<\/td>\nsession.json tmp+rename<\/td>\n\u9632\u6b62\u8fdb\u7a0b\u88ab\u6740\u5bfc\u81f4\u6570\u636e\u635f\u574f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    "\u65e0\u7f51\u7edc\u6743\u9650"\u7684\u9a8c\u8bc1\u65b9\u6cd5： \u5728Android Manifest\u4e2d\u4e0d\u58f0\u660e INTERNET \u6743\u9650（\u9664\u975e\u7528\u6237\u4e3b\u52a8\u4f7f\u7528\u5206\u4eab\u529f\u80fd），\u7cfb\u7edf\u5c42\u9762\u963b\u6b62App\u53d1\u8d77\u4efb\u4f55\u7f51\u7edc\u8bf7\u6c42\u3002\u8fd9\u662f\u6700\u5f3a\u7684\u9690\u79c1\u4fdd\u969c\u2014\u2014\u4e0d\u662f"\u627f\u8bfa\u4e0d\u4e0a\u4f20"，\u800c\u662f"\u6280\u672f\u4e0a\u65e0\u6cd5\u4e0a\u4f20"\u3002<\/p>\n

    \n

    \u5341\u3001\u67b6\u6784\u4f18\u7f3a\u70b9\u603b\u7ed3<\/h3>\n

    10.1 \u4f18\u70b9<\/h4>\n\n\u4f18\u70b9\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n\n\n
    \u9690\u79c1\u6700\u5f3a<\/td>\n\u6570\u636e\u4e0d\u51fa\u8bbe\u5907，\u4fe1\u4efb\u6839\u57fa<\/td>\n<\/tr>\n
    \u79bb\u7ebf\u53ef\u7528<\/td>\n\u98de\u884c\u6a21\u5f0f\/\u65e0\u7f51\u7edc\u73af\u5883\u5b8c\u5168\u53ef\u7528<\/td>\n<\/tr>\n
    \u65e0\u670d\u52a1\u5668\u6210\u672c<\/td>\n\u4e0d\u9700\u8981\u7ef4\u62a4\u4e91\u7aefAPI\u548c\u5b58\u50a8<\/td>\n<\/tr>\n
    \u65e0API\u9650\u6d41<\/td>\n\u4e0d\u53d7\u7b2c\u4e09\u65b9OCR API\u7684QPS\u9650\u5236<\/td>\n<\/tr>\n
    \u54cd\u5e94\u901f\u5ea6\u5feb<\/td>\n\u672c\u5730\u5904\u7406\u65e0\u7f51\u7edc\u5ef6\u8fdf<\/td>\n<\/tr>\n
    \u67b6\u6784\u6e05\u6670<\/td>\n\u56db\u5c42\u5206\u5c42 + Provider\u62c6\u5206<\/td>\n<\/tr>\n
    \u6570\u636e\u53ef\u9760<\/td>\n\u539f\u5b50\u5199\u5165 + \u7d22\u5f15\u91cd\u5efa\u673a\u5236<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    10.2 \u7f3a\u70b9\u4e0e\u5e94\u5bf9<\/h4>\n\n\u7f3a\u70b9\u5e94\u5bf9\u65b9\u6848<\/tr>\n\n\n\n\n\n\n
    \u672c\u5730OCR\u7cbe\u5ea6\u4f4e\u4e8e\u4e91\u7aef<\/td>\n\u5185\u7f6eTesseract + \u4f18\u5316\u8bad\u7ec3\u6570\u636e<\/td>\n<\/tr>\n
    \u8bbe\u5907\u5b58\u50a8\u7a7a\u95f4\u5360\u7528<\/td>\n\u63d0\u4f9b\u6e05\u7406\u529f\u80fd + \u7f29\u7565\u56fe\u53ef\u81ea\u52a8\u6e05\u7406<\/td>\n<\/tr>\n
    \u91cd\u8ba1\u7b97\u4f9d\u8d56\u8bbe\u5907\u6027\u80fd<\/td>\nIsolate\u5f02\u6b65 + \u52a8\u6001\u964d\u7ea7（fast\/thorough\u6a21\u5f0f）<\/td>\n<\/tr>\n
    \u65e0\u591a\u8bbe\u5907\u540c\u6b65<\/td>\n\u8fd9\u662f\u8bbe\u8ba1\u9009\u62e9，\u975e\u7f3a\u9677<\/td>\n<\/tr>\n
    \u65e0\u4e91\u7aef\u5907\u4efd<\/td>\n\u63d0\u4f9b\u5bfc\u51fa\u529f\u80fd\u8ba9\u7528\u6237\u81ea\u884c\u5907\u4efd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n

    \u5341\u4e00\u3001\u5b8c\u6574\u67b6\u6784\u6570\u636e\u6d41\u56fe<\/h3>\n

    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 UI \u5c42 \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 HomeScreen \u2502
    \n\u2502 \u251c\u2500\u2500 GreetingHeader \u2502
    \n\u2502 \u251c\u2500\u2500 ModuleGrid \u2502
    \n\u2502 \u2514\u2500\u2500 RecentDocsSection \u25c0\u2500\u2510
    \n\u2502 PagesScreen \u2502
    \n\u2502 \u251c\u2500\u2500 PageThumbList \u2502
    \n\u2502 \u2514\u2500\u2500 BottomActionBar \u2502
    \n\u2502 CropScreen \u2502
    \n\u2502 \u251c\u2500\u2500 CornerEditor \u2502
    \n\u2502 \u2514\u2500\u2500 ImageViewer \u2502
    \n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518
    \n \u2502 Provider.of \/ Consumer
    \n \u25bc
    \n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 State \u5c42 \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 ScanProvider \u2502
    \n\u2502 \u251c\u2500\u2500 current (ScanDoc?) \u2502
    \n\u2502 \u251c\u2500\u2500 recents [] \u2502
    \n\u2502 \u251c\u2500\u2500 busy \u2502
    \n\u2502 \u251c\u2500\u2500 addCapturedImage() \u2502
    \n\u2502 \u2514\u2500\u2500 linkRecents() \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 RecentsProvider \u2502
    \n\u2502 \u251c\u2500\u2500 recents[] \u2502
    \n\u2502 \u2514\u2500\u2500 refresh() \u25c0\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518
    \n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518
    \n \u2502 \u8c03\u7528
    \n \u25bc
    \n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 Service \u5c42 \u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 StorageService (static) \u2502
    \n\u2502 \u251c\u2500\u2500 saveSession() \u2502
    \n\u2502 \u251c\u2500\u2500 loadSession() \u2502
    \n\u2502 \u251c\u2500\u2500 deleteSession() \u2502
    \n\u2502 \u2514\u2500\u2500 loadIndex() \u2502
    \n\u2502 PdfExportService \u2502
    \n\u2502 \u2514\u2500\u2500 exportPdf() \u2502
    \n\u2502 OcrService \u2502
    \n\u2502 \u2514\u2500\u2500 extractText() \u2502
    \n\u2502 WatermarkService \u2502
    \n\u2502 \u251c\u2500\u2500 renderWatermarkTile()\u2502
    \n\u2502 \u2514\u2500\u2500 stampWatermarkTile()\u2502
    \n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518
    \n \u2502 Isolate\u8c03\u5ea6
    \n \u25bc
    \n\u250c\u2500\u2500\u2500\u2500\u2500\u2500 Algorithm \u5c42 \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 EdgeDetection \u2502
    \n\u2502 \u251c\u2500\u2500 detectDocumentCorners() \u2502
    \n\u2502 \u2514\u2500\u2500 \u4e94\u7ea7\u63a9\u7801\u7ea7\u8054 \u2502
    \n\u2502 Perspective \u2502
    \n\u2502 \u2514\u2500\u2500 perspectiveCorrect() \u2502
    \n\u2502 Dewarping \u2502
    \n\u2502 \u2514\u2500\u2500 \u66f2\u9762\u5c55\u5e73 \u2502
    \n\u2502 Filters \u2502
    \n\u2502 \u251c\u2500\u2500 applyFilterStack() \u2502
    \n\u2502 \u2514\u2500\u2500 \u7ea2\u7ae0\u4fdd\u7559 \u2502
    \n\u2502 ScanPipeline \u2502
    \n\u2502 \u2514\u2500\u2500 processPageImage() \u2502
    \n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

    \n

    \u5341\u4e8c\u3001\u5c0f\u7ed3<\/h3>\n

    \u5b89\u5fc3\u626b\u63cf\u7684"\u5168\u672c\u5730\u5904\u7406"\u67b6\u6784\u4e0d\u4ec5\u4ec5\u662f\u4e00\u4e2a\u6280\u672f\u9009\u62e9，\u66f4\u662f\u4e00\u4e2a\u4ea7\u54c1\u54f2\u5b66\u2014\u2014\u7528\u6237\u7684\u6570\u636e\u5c5e\u4e8e\u7528\u6237，\u4e0d\u5e94\u79bb\u5f00\u7528\u6237\u7684\u8bbe\u5907\u3002<\/p>\n

    \u8fd9\u5957\u67b6\u6784\u7684\u6838\u5fc3\u8bbe\u8ba1\u51b3\u7b56\u5305\u62ec：<\/p>\n

  • \u56db\u5c42\u5206\u5c42： UI \u2192 State \u2192 Service \u2192 Algorithm，\u6bcf\u5c42\u804c\u8d23\u6e05\u6670<\/li>\n
  • Provider\u62c6\u5206： \u4eceGod Object\u5230\u5355\u4e00\u804c\u8d23\u7684\u591a\u4e2aProvider<\/li>\n
  • \u53cc\u5411\u540c\u6b65： ScanProvider\u4e0eRecentsProvider\u901a\u8fc7linkRecents\u5173\u8054<\/li>\n
  • Isolate\u5f02\u6b65： \u91cd\u8ba1\u7b97\u4e0d\u5361UI<\/li>\n
  • ScanDocument\u6301\u4e45\u5316： session.json + \u539f\u5b50\u5199\u5165 + \u7d22\u5f15\u81ea\u52a8\u91cd\u5efa<\/li>\n
  • \u5b58\u50a8\u4f4d\u7f6e： \u6587\u6863\u5728Documents\/scans\/，\u7f29\u7565\u56fe\u5728\u4e34\u65f6\u76ee\u5f55thumbs\/<\/li>\n
  • \u7f29\u7565\u56fe\u7248\u672c\u5316\u547d\u540d： ${page.id}_${timestamp}.jpg \u7ed5\u8fc7 Image.file \u7f13\u5b58，\u7f16\u8f91\u540e\u5b9e\u65f6\u5237\u65b0<\/li>\n
  • IndexedStack\u4fdd\u72b6\u6001： \u5e95\u90e8Tab\u5207\u6362\u4e0d\u9500\u6bc1\u72b6\u6001<\/li>\n
  • \u547d\u540d\u8def\u7531\u96c6\u4e2d\u7ba1\u7406： AppRoutes\u6309\u529f\u80fd\u57df\u5206\u7ec4<\/li>\n
  • \u96f6\u7f51\u7edc\u4f9d\u8d56： \u6838\u5fc3\u529f\u80fd\u5b8c\u5168\u79bb\u7ebf，\u9690\u79c1\u4ece\u67b6\u6784\u5c42\u9762\u4fdd\u969c<\/li>\n

    🔔 \u5b8c\u6574\u6e90\u7801\u5373\u5c06\u4e0a\u67b6<\/p>\n

    \u4e0b\u4e00\u7bc7\u9884\u544a： \u300a\u4eceCamScanner\u5230\u81ea\u4e3b\u5b9e\u73b0：\u6587\u6863\u626b\u63cf\u7b97\u6cd5\u5bf9\u6bd4\u4e0e\u4f18\u5316\u601d\u8def\u300b\u2014\u2014\u7cfb\u5217\u6536\u5b98\u4e4b\u4f5c，\u5c06\u5168\u9762\u5bf9\u6bd4\u5b89\u5fc3\u626b\u63cf\u4e0eCamScanner\u3001\u767d\u63cf\u3001Adobe Scan\u7684\u529f\u80fd\u77e9\u9635，\u6df1\u5165\u5206\u6790\u4e94\u7ea7\u63a9\u7801\u7ea7\u8054\u8fb9\u7f18\u68c0\u6d4b\u3001\u7ea2\u7ae0\u4fdd\u7559\u7b49\u6838\u5fc3\u7b97\u6cd5\u7684\u5dee\u5f02，\u5206\u4eab\u5de5\u7a0b\u5b9e\u8df5\u4e2d"\u7b80\u5355\u6709\u6548 > \u8fc7\u5ea6\u5de5\u7a0b"\u7684\u6838\u5fc3\u6559\u8bad，\u5e76\u63d0\u4f9b\u5b8c\u6574\u7684\u6e90\u7801\u83b7\u53d6\u65b9\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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