export comic as pdf

2025-09-27 07:47:24 +00:00 · 2024-12-01 18:54:17 +08:00
parent a711335012
commit 705c448cfe
7 changed files with 187 additions and 7 deletions
--- a/assets/translation.json
+++ b/assets/translation.json
@@ -244,7 +244,8 @@
    "Deleted @a favorite items.": "已删除 @a 条无效收藏",
    "New version available": "有新版本可用",
    "A new version is available. Do you want to update now?" : "有新版本可用。您要现在更新吗？",
-    "No new version available": "没有新版本可用"
+    "No new version available": "没有新版本可用",
+    "Export as pdf": "导出为pdf"
  },
  "zh_TW": {
    "Home": "首頁",
@@ -491,6 +492,7 @@
    "Deleted @a favorite items.": "已刪除 @a 條無效收藏",
    "New version available": "有新版本可用",
    "A new version is available. Do you want to update now?" : "有新版本可用。您要現在更新嗎？",
-    "No new version available": "沒有新版本可用"
+    "No new version available": "沒有新版本可用",
+    "Export as pdf": "匯出為pdf"
  }
 }
--- a/lib/foundation/local.dart
+++ b/lib/foundation/local.dart
@@ -76,7 +76,7 @@ class LocalComic with HistoryMixin implements Comic {
        cover,
      ));

-  String get baseDir => directory.contains("/") ? directory : FilePath.join(LocalManager().path, directory);
+  String get baseDir => (directory.contains('/') || directory.contains('\\')) ? directory : FilePath.join(LocalManager().path, directory);

  @override
  String get description => "";
--- a/lib/pages/local_comics_page.dart
+++ b/lib/pages/local_comics_page.dart
@@ -4,9 +4,11 @@ import 'package:venera/foundation/app.dart';
 import 'package:venera/foundation/appdata.dart';
 import 'package:venera/foundation/comic_source/comic_source.dart';
 import 'package:venera/foundation/local.dart';
+import 'package:venera/foundation/log.dart';
 import 'package:venera/pages/downloading_page.dart';
 import 'package:venera/utils/cbz.dart';
 import 'package:venera/utils/io.dart';
+import 'package:venera/utils/pdf.dart';
 import 'package:venera/utils/translations.dart';

 class LocalComicsPage extends StatefulWidget {
@@ -299,8 +301,7 @@ class _LocalComicsPageState extends State<LocalComicsPage> {
                              return ContentDialog(
                                title: "Delete".tl,
                                content: CheckboxListTile(
-                                  title:
-                                  Text("Also remove files on disk".tl),
+                                  title: Text("Also remove files on disk".tl),
                                  value: removeComicFile,
                                  onChanged: (v) {
                                    state(() {
@@ -361,6 +362,34 @@ class _LocalComicsPageState extends State<LocalComicsPage> {
                      }
                      controller.close();
                    }),
+                if (!multiSelectMode)
+                  MenuEntry(
+                    icon: Icons.picture_as_pdf_outlined,
+                    text: "Export as pdf".tl,
+                    onClick: () async {
+                      var cache = FilePath.join(App.cachePath, 'temp.pdf');
+                      var controller = showLoadingDialog(
+                        context,
+                        allowCancel: false,
+                      );
+                      try {
+                        await createPdfFromComicIsolate(
+                          comic: c as LocalComic,
+                          savePath: cache,
+                        );
+                        await saveFile(
+                          file: File(cache),
+                          filename: "${c.title}.pdf",
+                        );
+                      } catch (e, s) {
+                        Log.error("PDF Export", e, s);
+                        context.showMessage(message: e.toString());
+                      } finally {
+                        controller.close();
+                        File(cache).deleteIgnoreError();
+                      }
+                    },
+                  )
              ];
            },
          ),
--- a/lib/utils/io.dart
+++ b/lib/utils/io.dart
@@ -360,8 +360,8 @@ class _IOOverrides extends IOOverrides {
  }
 }

-void overrideIO(void Function() f) {
-  IOOverrides.runWithIOOverrides(
+T overrideIO<T>(T Function() f) {
+  return IOOverrides.runWithIOOverrides<T>(
    f,
    _IOOverrides(),
  );
--- a/lib/utils/pdf.dart
+++ b/lib/utils/pdf.dart
@@ -0,0 +1,92 @@
+import 'dart:isolate';
+
+import 'package:pdf/widgets.dart';
+import 'package:venera/foundation/local.dart';
+import 'package:venera/utils/io.dart';
+
+Future<void> _createPdfFromComic({
+  required LocalComic comic,
+  required String savePath,
+  required String localPath,
+}) async {
+  final pdf = Document(
+    title: comic.title,
+    author: comic.subTitle ?? "",
+    producer: "Venera",
+  );
+
+  pdf.document.outline;
+
+  var baseDir = comic.directory.contains('/') || comic.directory.contains('\\')
+      ? comic.directory
+      : FilePath.join(localPath, comic.directory);
+
+  // add cover
+  var imageData = File(FilePath.join(baseDir, comic.cover)).readAsBytesSync();
+  pdf.addPage(Page(
+    build: (Context context) {
+      return Image(MemoryImage(imageData), fit: BoxFit.contain);
+    },
+  ));
+
+  bool multiChapters = comic.chapters != null;
+
+  void reorderFiles(List<FileSystemEntity> files) {
+    files.removeWhere(
+        (element) => element is! File || element.path.startsWith('cover'));
+    files.sort((a, b) {
+      var aName = (a as File).name;
+      var bName = (b as File).name;
+      var aNumber = int.tryParse(aName);
+      var bNumber = int.tryParse(bName);
+      if (aNumber != null && bNumber != null) {
+        return aNumber.compareTo(bNumber);
+      }
+      return aName.compareTo(bName);
+    });
+  }
+
+  if (!multiChapters) {
+    var files = Directory(baseDir).listSync();
+    reorderFiles(files);
+
+    for (var file in files) {
+      var imageData = (file as File).readAsBytesSync();
+      pdf.addPage(Page(
+        build: (Context context) {
+          return Image(MemoryImage(imageData), fit: BoxFit.contain);
+        },
+      ));
+    }
+  } else {
+    for (var chapter in comic.chapters!.keys) {
+      var files = Directory(FilePath.join(baseDir, chapter)).listSync();
+      reorderFiles(files);
+      for (var file in files) {
+        var imageData = (file as File).readAsBytesSync();
+        pdf.addPage(Page(
+          build: (Context context) {
+            return Image(MemoryImage(imageData), fit: BoxFit.contain);
+          },
+        ));
+      }
+    }
+  }
+
+  final file = File(savePath);
+  file.writeAsBytesSync(await pdf.save());
+}
+
+Future<void> createPdfFromComicIsolate({
+  required LocalComic comic,
+  required String savePath,
+}) async {
+  var localPath = LocalManager().path;
+  return Isolate.run(() => overrideIO(() async {
+        return await _createPdfFromComic(
+          comic: comic,
+          savePath: savePath,
+          localPath: localPath,
+        );
+      }));
+}
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -33,6 +33,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "1.0.4"
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: cb6a278ef2dbb298455e1a713bda08524a175630ec643a242c399c932a0a1f7d
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.6.1"
  args:
    dependency: transitive
    description:
@@ -49,6 +57,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "2.11.0"
+  barcode:
+    dependency: transitive
+    description:
+      name: barcode
+      sha256: ab180ce22c6555d77d45f0178a523669db67f95856e3378259ef2ffeb43e6003
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.8"
  battery_plus:
    dependency: "direct main"
    description:
@@ -65,6 +81,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "2.0.1"
+  bidi:
+    dependency: transitive
+    description:
+      name: bidi
+      sha256: "9a712c7ddf708f7c41b1923aa83648a3ed44cfd75b04f72d598c45e5be287f9d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.12"
  boolean_selector:
    dependency: transitive
    description:
@@ -465,6 +489,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "4.0.2"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      sha256: f31d52537dc417fdcde36088fdf11d191026fd5e4fae742491ebd40e5a8bea7d
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.3.0"
  intl:
    dependency: "direct main"
    description:
@@ -626,6 +658,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "1.9.0"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      sha256: "883402936929eac138ee0a45da5b0f2c80f89913e6dc3bf77eb65b84b409c6ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
  path_provider:
    dependency: "direct main"
    description:
@@ -674,6 +714,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "2.3.0"
+  pdf:
+    dependency: "direct main"
+    description:
+      name: pdf
+      sha256: "05df53f8791587402493ac97b9869d3824eccbc77d97855f4545cf72df3cae07"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.11.1"
  petitparser:
    dependency: transitive
    description:
@@ -715,6 +763,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "3.9.1"
+  qr:
+    dependency: transitive
+    description:
+      name: qr
+      sha256: "5a1d2586170e172b8a8c8470bbbffd5eb0cd38a66c0d77155ea138d3af3a4445"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
  rhttp:
    dependency: "direct main"
    description:
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -69,6 +69,7 @@ dependencies:
    git: 
      url: https://github.com/pkuislm/flutter_saf.git
      ref: dd5242918da0ea9a0a50b0f87ade7a2def65453d
+  pdf: ^3.11.1

 dev_dependencies:
  flutter_test: