Fix: Fixed an issue with opening screen saver files (#13573)

Author: yaira2

src/Files.App/Helpers/Navigation/NavigationHelpers.cs

@@ -121,6 +121,7 @@ public static async Task<bool> OpenPath(string path, IShellPage associatedInstan
 			bool isDirectory = NativeFileOperationsHelper.HasFileAttribute(path, System.IO.FileAttributes.Directory);
 			bool isReparsePoint = NativeFileOperationsHelper.HasFileAttribute(path, System.IO.FileAttributes.ReparsePoint);
 			bool isShortcut = FileExtensionHelpers.IsShortcutOrUrlFile(path);
+			bool isScreenSaver = FileExtensionHelpers.IsScreenSaverFile(path);
 			bool isTag = path.StartsWith("tag:");
 			FilesystemResult opened = (FilesystemResult)false;
 
@@ -200,6 +201,10 @@ public static async Task<bool> OpenPath(string path, IShellPage associatedInstan
 					break;
 
 				case FilesystemItemType.File:
+					// Starts the screensaver in full-screen mode
+					if (isScreenSaver)
+						args += "/s";
+
 					opened = await OpenFile(path, associatedInstance, shortcutInfo, openViaApplicationPicker, args);
 					break;
 			};
@@ -442,4 +447,4 @@ private static async Task OpenPathAsync(bool forceOpenInNewTab, bool openFolderI
 			}
 		}
 	}
-}
+}

src/Files.Shared/Helpers/FileExtensionHelpers.cs

@@ -153,6 +153,17 @@ public static bool IsVhdFile(string? fileExtensionToCheck)
 		{
 			return HasExtension(fileExtensionToCheck, ".vhd", ".vhdx");
 		}
+		
+		/// <summary>
+		/// Check if the file extension is a screen saver file.
+		/// </summary>
+		/// <param name="fileExtensionToCheck">The file extension to check.</param>
+		/// <returns><c>true</c> if the fileExtensionToCheck is a screen saver file; otherwise, <c>false</c>.</returns>
+		/// <remarks>Screen saver file types are; scr</remarks>
+		public static bool IsScreenSaverFile(string? fileExtensionToCheck)
+		{
+			return HasExtension(fileExtensionToCheck, ".scr");
+		}
 
 		/// <summary>
 		/// Check if the file extension is a media (audio/video) file.