opt set window size/pos

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/utils/storage_key.dart

@@ -135,10 +135,12 @@ abstract class SettingBoxKey {
       showFsScreenshotBtn = 'showFsScreenshotBtn',
       showFsLockBtn = 'showFsLockBtn',
       silentDownImg = 'silentDownImg',
-      showMemberShop = 'showMemberShop',
-      minimizeOnExit = 'minimizeOnExit',
+      showMemberShop = 'showMemberShop';
+
+  static const String minimizeOnExit = 'minimizeOnExit',
       windowSize = 'windowSize',
-      windowPosition = 'windowPosition';
+      windowPosition = 'windowPosition',
+      isWindowMaximized = 'isWindowMaximized';
 
   static const String subtitlePreferenceV2 = 'subtitlePreferenceV2',
       enableDragSubtitle = 'enableDragSubtitle',

lib/utils/storage_pref.dart

@@ -823,4 +823,7 @@ abstract class Pref {
 
   static List<double>? get windowPosition =>
       _setting.get(SettingBoxKey.windowPosition);
+
+  static bool get isWindowMaximized =>
+      _setting.get(SettingBoxKey.isWindowMaximized, defaultValue: false);
 }

lib/utils/utils.dart

@@ -4,14 +4,17 @@ import 'dart:io';
 import 'dart:math';
 
 import 'package:PiliPlus/common/constants.dart';
+import 'package:PiliPlus/utils/storage_pref.dart';
 import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flutter/material.dart' show Alignment;
 import 'package:flutter/services.dart';
 import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:get/get.dart';
 import 'package:path/path.dart' as path;
 import 'package:path_provider/path_provider.dart';
 import 'package:share_plus/share_plus.dart';
+import 'package:window_manager/window_manager.dart';
 
 abstract class Utils {
   static final Random random = Random();
@@ -25,6 +28,19 @@ abstract class Utils {
   static final bool isDesktop =
       Platform.isWindows || Platform.isMacOS || Platform.isLinux;
 
+  static Future<({double left, double top})> get windowOffset async {
+    final windowPosition = Pref.windowPosition;
+    if (windowPosition != null) {
+      return (left: windowPosition[0], top: windowPosition[1]);
+    }
+    final Size windowSize = await windowManager.getSize();
+    final Offset position = await calcWindowPosition(
+      windowSize,
+      Alignment.center,
+    );
+    return (left: position.dx, top: position.dy);
+  }
+
   static Future<bool> get isWiFi async {
     try {
       return Utils.isMobile &&