tweaks (#1562)

* opt: downloadImg use cache

* opt: uin8 cast

* non null ext

lib/common/widgets/image/network_img_layer.dart

@@ -80,7 +80,7 @@ class NetworkImgLayer extends StatelessWidget {
     if (height == null || forceUseCacheWidth || width <= height!) {
       memCacheWidth = width.cacheSize(context);
     } else {
-      memCacheHeight = height.cacheSize(context);
+      memCacheHeight = height?.cacheSize(context);
     }
     return CachedNetworkImage(
       imageUrl: ImageUtils.thumbnailUrl(src, quality),

lib/pages/group_panel/view.dart

@@ -39,7 +39,7 @@ class _GroupPanelState extends State<GroupPanel> {
   void _query() {
     MemberHttp.followUpTags().then((res) {
       if (mounted) {
-        loadingState = res..dataOrNull.removeFirstWhere((e) => e.tagid == 0);
+        loadingState = res..dataOrNull?.removeFirstWhere((e) => e.tagid == 0);
         showDefaultBtn.value = tags.isEmpty;
         setState(() {});
       }

lib/plugin/pl_player/widgets/mpv_convert_webp.dart

@@ -68,7 +68,7 @@ class MpvConvertWebp {
       _observeProperty('time-pos');
     }
     final level = (kDebugMode ? 'info' : 'error').toNativeUtf8();
-    _mpv.mpv_request_log_messages(_ctx, level.cast());
+    _mpv.mpv_request_log_messages(_ctx, level);
     calloc.free(level);
   }
 
@@ -124,7 +124,7 @@ class MpvConvertWebp {
       arr[i] = pointers[i];
     }
 
-    _mpv.mpv_command(_ctx, arr.cast());
+    _mpv.mpv_command(_ctx, arr);
 
     calloc.free(arr);
     pointers.forEach(calloc.free);
@@ -135,7 +135,7 @@ class MpvConvertWebp {
     _mpv.mpv_observe_property(
       _ctx,
       property.hashCode,
-      name.cast(),
+      name,
       generated.mpv_format.MPV_FORMAT_DOUBLE,
     );
 

lib/utils/cache_manage.dart

@@ -57,7 +57,7 @@ abstract class CacheManage {
       value = value / 1024;
     }
     String size = value.toStringAsFixed(2);
-    return size + unitArr.getOrElse(index, orElse: () => '');
+    return size + (unitArr.getOrNull(index) ?? '');
   }
 
   // 清除 Library/Caches 目录及文件缓存

lib/utils/extension.dart

@@ -14,12 +14,12 @@ import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:get/get.dart' hide ContextExtensionss;
 import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
 
-extension ImageExtension on num? {
+extension ImageExtension on num {
   int? cacheSize(BuildContext context) {
-    if (this == null || this == 0) {
+    if (this == 0) {
       return null;
     }
-    return (this! * MediaQuery.devicePixelRatioOf(context)).round();
+    return (this * MediaQuery.devicePixelRatioOf(context)).round();
   }
 }
 
@@ -57,13 +57,43 @@ extension IterableExt<T> on Iterable<T>? {
   bool get isNullOrEmpty => this == null || this!.isEmpty;
 }
 
+extension NonNullIterableExt<T> on Iterable<T> {
+  T? reduceOrNull(T Function(T value, T element) combine) {
+    Iterator<T> iterator = this.iterator;
+    if (!iterator.moveNext()) {
+      return null;
+    }
+    T value = iterator.current;
+    while (iterator.moveNext()) {
+      value = combine(value, iterator.current);
+    }
+    return value;
+  }
+}
+
 extension MapExt<K, V> on Map<K, V> {
   Map<RK, RV> fromCast<RK, RV>() {
     return Map<RK, RV>.from(this);
   }
 }
 
-extension NonNullListExt<T> on List<T> {
+extension ListExt<T> on List<T> {
+  T? getOrNull(int index) {
+    if (index < 0 || index >= length) {
+      return null;
+    }
+    return this[index];
+  }
+
+  bool removeFirstWhere(bool Function(T) test) {
+    final index = indexWhere(test);
+    if (index != -1) {
+      removeAt(index);
+      return true;
+    }
+    return false;
+  }
+
   List<R> fromCast<R>() {
     return List<R>.from(this);
   }
@@ -72,34 +102,7 @@ extension NonNullListExt<T> on List<T> {
     bool Function(T) test,
     T Function(T, T) combine,
   ) {
-    final filters = where(test).toList();
+    return where(test).reduceOrNull(combine) ?? reduce(combine);
-    return filters.isNotEmpty ? filters.reduce(combine) : reduce(combine);
-  }
-}
-
-extension ListExt<T> on List<T>? {
-  T? getOrNull(int index) {
-    if (isNullOrEmpty) {
-      return null;
-    }
-    if (index < 0 || index >= this!.length) {
-      return null;
-    }
-    return this![index];
-  }
-
-  T getOrElse(int index, {required T Function() orElse}) {
-    return getOrNull(index) ?? orElse();
-  }
-
-  bool removeFirstWhere(bool Function(T) test) {
-    if (this == null) return false;
-    final index = this!.indexWhere(test);
-    if (index != -1) {
-      this!.removeAt(index);
-      return true;
-    }
-    return false;
   }
 }
 

lib/utils/image_utils.dart

@@ -11,6 +11,7 @@ import 'package:PiliPlus/utils/utils.dart';
 import 'package:dio/dio.dart';
 import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:intl/intl.dart' show DateFormat;
 import 'package:live_photo_maker/live_photo_maker.dart';
@@ -164,8 +165,9 @@ abstract class ImageUtils {
 
   static Future<bool> downloadImg(
     BuildContext context,
-    List<String> imgList,
+    List<String> imgList, [
-  ) async {
+    CacheManager? manager,
+  ]) async {
     if (Utils.isMobile && !await checkPermissionDependOnSdkInt(context)) {
       return false;
     }
@@ -179,11 +181,15 @@ abstract class ImageUtils {
       );
     }
     try {
-      final isAndroid = Platform.isAndroid;
-      final tempPath = await Utils.temporaryDirectory;
       final futures = imgList.map((url) async {
         final name = Utils.getFileName(url);
-        final filePath = '$tempPath/$name';
+
+        final file = (await (manager ?? DefaultCacheManager()).getFileFromCache(
+          url.http2https,
+        ))?.file;
+
+        if (file == null) {
+          final String filePath = '${await Utils.temporaryDirectory}/$name';
 
           final response = await Request().downloadFile(
             url.http2https,
@@ -191,7 +197,7 @@ abstract class ImageUtils {
             cancelToken: cancelToken,
           );
 
-        if (isAndroid) {
+          if (Utils.isMobile) {
             if (response.statusCode == 200) {
               await SaverGallery.saveFile(
                 filePath: filePath,
@@ -205,15 +211,29 @@ abstract class ImageUtils {
             filePath: filePath,
             name: name,
             statusCode: response.statusCode,
+            del: true,
           );
+        } else {
+          if (Utils.isMobile) {
+            await SaverGallery.saveFile(
+              filePath: file.path,
+              fileName: name,
+              androidRelativePath: "Pictures/${Constants.appName}",
+              skipIfExists: false,
+            );
+          }
+
+          return (filePath: file.path, name: name, statusCode: 200, del: false);
+        }
       });
       final result = await Future.wait(futures, eagerError: true);
-      if (!isAndroid) {
+      if (!Utils.isMobile) {
         for (var res in result) {
           if (res.statusCode == 200) {
             await saveFileImg(
               filePath: res.filePath,
               fileName: res.name,
+              del: res.del,
             );
           }
         }
@@ -305,6 +325,7 @@ abstract class ImageUtils {
     required String fileName,
     FileType type = FileType.image,
     bool needToast = false,
+    bool del = true,
   }) async {
     final file = File(filePath);
     if (!file.existsSync()) {
@@ -318,7 +339,8 @@ abstract class ImageUtils {
         fileName: fileName,
         androidRelativePath: "Pictures/${Constants.appName}",
         skipIfExists: false,
-      ).whenComplete(file.tryDel);
+      );
+      if (del) file.tryDel();
     } else {
       final savePath = await FilePicker.platform.saveFile(
         type: type,
@@ -329,7 +351,7 @@ abstract class ImageUtils {
         return;
       }
       await file.copy(savePath);
-      file.tryDel();
+      if (del) file.tryDel();
       result = SaveResult(true, null);
     }
     if (needToast) {