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Improve ttml 1.0 regarding alignment tags slightly - thx OmrSi :)

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niksedk 2021-11-03 17:27:43 +01:00
parent 29dd2c00f7
commit dc5bfd769c
1 changed files with 140 additions and 0 deletions
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140
src/libse/SubtitleFormats/TimedText10.cs
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@ -2,6 +2,7 @@
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Xml;
@ -468,6 +469,43 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
region = "topRight";
}
}
else
{
if (text.StartsWith("{\\an8}", StringComparison.Ordinal))
{
var topRegions = GetRegionsTopFromHeader(xml.OuterXml);
if (topRegions.Count == 1)
{
region = topRegions[0];
}
else
{
var topStyle = topRegions.FirstOrDefault(r => r.ToLowerInvariant() == "top");
if (topStyle != null)
{
region = topStyle;
}
}
}
else if (text.StartsWith("{\\an2}", StringComparison.Ordinal) || !text.Contains("{\\an"))
{
var bottomRegions = GetRegionsBottomFromHeader(xml.OuterXml);
if (bottomRegions.Count == 1)
{
region = bottomRegions[0];
}
else
{
var bottomStyle = bottomRegions.FirstOrDefault(r => r.ToLowerInvariant() == "bottom");
if (bottomStyle != null)
{
region = bottomStyle;
}
}
}
}
text = Utilities.RemoveSsaTags(text);
text = HtmlUtil.FixInvalidItalicTags(text);
@ -1411,6 +1449,54 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
return list;
}
public static List<string> GetRegionsBottomFromHeader(string xmlAsString)
{
var list = new List<string>();
var xml = new XmlDocument();
try
{
xml.LoadXml(xmlAsString);
var nsmgr = new XmlNamespaceManager(xml.NameTable);
nsmgr.AddNamespace("ttml", "http://www.w3.org/ns/ttml");
XmlNode head = xml.DocumentElement.SelectSingleNode("ttml:head", nsmgr);
foreach (XmlNode node in head.SelectNodes("//ttml:region", nsmgr))
{
bool top = false;
foreach (XmlNode styleNode in node.ChildNodes)
{
top = GetIfBottomAligned(styleNode);
if (top)
{
break;
}
}
if (!top && node.Attributes != null)
{
top = GetIfBottomAligned(node);
}
if (top)
{
if (node.Attributes["xml:id"] != null)
{
list.Add(node.Attributes["xml:id"].Value);
}
else if (node.Attributes["id"] != null)
{
list.Add(node.Attributes["id"].Value);
}
}
}
}
catch
{
// ignored
}
return list;
}
private static bool GetIfTopAligned(XmlNode styleNode)
{
if (styleNode?.Attributes == null)
@ -1470,6 +1556,60 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
return false;
}
private static bool GetIfBottomAligned(XmlNode styleNode)
{
if (styleNode?.Attributes == null)
{
return false;
}
var origin = string.Empty;
if (styleNode.Attributes["tts:origin"] != null)
{
origin = styleNode.Attributes["tts:origin"].Value;
}
else if (styleNode.Attributes["origin"] != null)
{
origin = styleNode.Attributes["origin"].Value;
}
var originArr = origin.Split(' ');
var extent = string.Empty;
if (styleNode.Attributes["tts:extent"] != null)
{
extent = styleNode.Attributes["tts:extent"].Value;
}
else if (styleNode.Attributes["extent"] != null)
{
extent = styleNode.Attributes["extent"].Value;
}
var extentArr = extent.Split(' ');
var displayAlign = string.Empty;
if (styleNode.Attributes["tts:displayAlign"] != null)
{
displayAlign = styleNode.Attributes["tts:displayAlign"].Value;
}
else if (styleNode.Attributes["displayAlign"] != null)
{
displayAlign = styleNode.Attributes["displayAlign"].Value;
}
if (originArr.Length == 2 && originArr[0].EndsWith("%", StringComparison.Ordinal) && originArr[1].EndsWith("%", StringComparison.Ordinal) &&
extentArr.Length == 2 && extentArr[0].EndsWith("%", StringComparison.Ordinal) && extentArr[1].EndsWith("%", StringComparison.Ordinal) &&
!string.IsNullOrEmpty(displayAlign))
{
var yPos = Convert.ToDouble(originArr[1].TrimEnd('%'), CultureInfo.InvariantCulture);
if (yPos > 40 && displayAlign == "after")
{
return true;
}
}
return false;
}
public static List<string> GetUsedLanguages(Subtitle subtitle)
{
var list = new List<string>();