From 5d90b816c9f7578a09038b828f69dc166a75442a Mon Sep 17 00:00:00 2001
From: niksedk <nikse.dk@gmail.com>
Date: Tue, 21 Nov 2023 19:47:01 +0100
Subject: [PATCH] Support an5 alignment for SMPTE-TT 2052 - thx Steve :)

---
 src/libse/SubtitleFormats/SmpteTt2052.cs | 16 ++++++++++++++--
 src/libse/SubtitleFormats/TimedText10.cs |  6 +++---
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/libse/SubtitleFormats/SmpteTt2052.cs b/src/libse/SubtitleFormats/SmpteTt2052.cs
index 974c0eaa3..7e0f439b8 100644
--- a/src/libse/SubtitleFormats/SmpteTt2052.cs
+++ b/src/libse/SubtitleFormats/SmpteTt2052.cs
@@ -120,6 +120,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
         </styling>
         <layout>
             <region xml:id='bottom' tts:backgroundColor='transparent' tts:showBackground='whenActive' tts:origin='10% 55%' tts:extent='80% 80%' tts:displayAlign='after' />
+            <region xml:id='centerCenter' tts:backgroundColor='transparent' tts:showBackground='whenActive' tts:origin='10% 32%' tts:extent='80% 80%' tts:displayAlign='center ' />
             <region xml:id='top' tts:backgroundColor='transparent' tts:showBackground='whenActive' tts:origin='10% 10%' tts:extent='80% 80%' tts:displayAlign='before' />
         </layout>
     </head>
@@ -149,8 +150,9 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                 }
             }
             var div = xml.DocumentElement.SelectSingleNode("//ttml:body", nsmgr).SelectSingleNode("ttml:div", nsmgr);
-            bool hasBottomCenterRegion = false;
-            bool hasTopCenterRegion = false;
+            var hasBottomCenterRegion = false;
+            var hasTopCenterRegion = false;
+            var hasMiddleRegion = false;
             foreach (XmlNode node in xml.DocumentElement.SelectNodes("//ttml:head/ttml:layout/ttml:region", nsmgr))
             {
                 string id = null;
@@ -172,6 +174,11 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                 {
                     hasTopCenterRegion = true;
                 }
+
+                if (id != null && (id == "centerCenter" || id == "center"))
+                {
+                    hasMiddleRegion = true;
+                }
             }
 
             foreach (var p in subtitle.Paragraphs)
@@ -204,6 +211,11 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                         paragraph.Attributes.Append(regionP);
                     }
                 }
+                else if (hasMiddleRegion && (text.StartsWith("{\\an5}", StringComparison.Ordinal) || text.StartsWith("{\\an6}", StringComparison.Ordinal) || text.StartsWith("{\\an7}", StringComparison.Ordinal)))
+                {
+                    regionP.InnerText = "centerCenter";
+                    paragraph.Attributes.Append(regionP);
+                }
                 else if (hasBottomCenterRegion)
                 {
                     regionP.InnerText = "bottom";
diff --git a/src/libse/SubtitleFormats/TimedText10.cs b/src/libse/SubtitleFormats/TimedText10.cs
index 7c7751013..eec9bcdb6 100644
--- a/src/libse/SubtitleFormats/TimedText10.cs
+++ b/src/libse/SubtitleFormats/TimedText10.cs
@@ -201,7 +201,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
             "           <region tts:extent=\"80% 40%\" tts:origin=\"10% 50%\" tts:displayAlign=\"after\" tts:textAlign=\"start\" xml:id=\"bottomLeft\" />" + Environment.NewLine +
             // Middle column
             "           <region tts:extent=\"80% 40%\" tts:origin=\"10% 10%\" tts:displayAlign=\"before\" tts:textAlign=\"center\" xml:id=\"topCenter\" />" + Environment.NewLine +
-            "           <region tts:extent=\"80% 40%\" tts:origin=\"10% 30%\" tts:displayAlign=\"center\" tts:textAlign=\"center\" xml:id=\"centerСenter\" />" + Environment.NewLine +
+            "           <region tts:extent=\"80% 40%\" tts:origin=\"10% 30%\" tts:displayAlign=\"center\" tts:textAlign=\"center\" xml:id=\"centerCenter\" />" + Environment.NewLine +
             "           <region tts:extent=\"80% 40%\" tts:origin=\"10% 50%\" tts:displayAlign=\"after\" tts:textAlign=\"center\" xml:id=\"bottomCenter\" />" + Environment.NewLine +
             // Right column
             "           <region tts:extent=\"80% 40%\" tts:origin=\"10% 10%\" tts:displayAlign=\"before\" tts:textAlign=\"end\" xml:id=\"topRight\" />" + Environment.NewLine +
@@ -448,7 +448,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                     region = "centerLeft";
                 }
 
-                if (text.StartsWith("{\\an5}", StringComparison.Ordinal) && AddDefaultRegionIfNotExists(xml, "centerСenter"))
+                if (text.StartsWith("{\\an5}", StringComparison.Ordinal) && AddDefaultRegionIfNotExists(xml, "centerCenter"))
                 {
                     region = "centerСenter";
                 }
@@ -882,7 +882,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                             new KeyValuePair<string, string>("bottomCenter", "{\\an2}"),
                             new KeyValuePair<string, string>("bottomRight", "{\\an3}"),
                             new KeyValuePair<string, string>("centerLeft", "{\\an4}"),
-                            new KeyValuePair<string, string>("centerСenter", "{\\an5}"),
+                            new KeyValuePair<string, string>("centerCenter", "{\\an5}"),
                             new KeyValuePair<string, string>("centerRight", "{\\an6}"),
                             new KeyValuePair<string, string>("topLeft", "{\\an7}"),
                             new KeyValuePair<string, string>("topCenter", "{\\an8}"),