From a796cdbdf089ecff53625fcdda9f337c47a32427 Mon Sep 17 00:00:00 2001
From: ema <mccoy39082@163.com>
Date: Fri, 27 Jun 2025 03:28:08 +0800
Subject: [PATCH] Support RTL for .txt file #1612

---
 .../QuickLook.Plugin.TextViewer/TextViewerPanel.cs        | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.cs b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.cs
index 869ecdd..e18ef59 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.cs
@@ -25,6 +25,7 @@ using QuickLook.Plugin.TextViewer.Detectors;
 using QuickLook.Plugin.TextViewer.Themes;
 using QuickLook.Plugin.TextViewer.Themes.HighlightingDefinitions;
 using System;
+using System.Globalization;
 using System.IO;
 using System.Reflection;
 using System.Threading.Tasks;
@@ -205,6 +206,13 @@ public partial class TextViewerPanel : TextEditor, IDisposable
                         : Brushes.Transparent;
                 }
 
+                if (extension.Equals(".txt", StringComparison.OrdinalIgnoreCase))
+                {
+                    FlowDirection = CultureInfo.CurrentUICulture.TextInfo.IsRightToLeft
+                        ? System.Windows.FlowDirection.RightToLeft
+                        : System.Windows.FlowDirection.LeftToRight;
+                }
+
                 context.IsBusy = false;
             }, DispatcherPriority.Render);
         });