From 4d887d3a14f4d0db84d29b66b9113a228f085ad1 Mon Sep 17 00:00:00 2001
From: Maxim <maxplusim@mail.ru>
Date: Sat, 21 Oct 2023 20:32:00 +0300
Subject: [PATCH] PDF/UA-2. Add new type CosAlt and new properties

---
 src/main/java/CosLayer.mdl | 5 +++++
 src/main/java/Operator.mdl | 5 +++++
 src/main/java/PDLayer.mdl  | 3 +++
 3 files changed, 13 insertions(+)

diff --git a/src/main/java/CosLayer.mdl b/src/main/java/CosLayer.mdl
index 11f6081..cb3b52b 100644
--- a/src/main/java/CosLayer.mdl
+++ b/src/main/java/CosLayer.mdl
@@ -133,6 +133,11 @@ type CosBM extends CosName {
 type CosActualText extends CosString {
 }
 
+% alt
+type CosAlt extends CosString {
+}
+
+
 % PDF Name representing a Utf8 string
 type CosUnicodeName extends CosName {
 	% indicates if the Name represents a Unicode string correctly encoded by Utf8
diff --git a/src/main/java/Operator.mdl b/src/main/java/Operator.mdl
index deff6f2..3d57d3f 100644
--- a/src/main/java/Operator.mdl
+++ b/src/main/java/Operator.mdl
@@ -10,6 +10,7 @@ import org.verapdf.model.coslayer.CosDict;
 import org.verapdf.model.coslayer.CosRenderingIntent;
 import org.verapdf.model.coslayer.CosLang;
 import org.verapdf.model.coslayer.CosActualText;
+import org.verapdf.model.coslayer.CosAlt;
 
 import org.verapdf.model.pdlayer.PDColorSpace;
 import org.verapdf.model.pdlayer.PDExtGState;
@@ -487,6 +488,8 @@ type Op_Do extends OpXObject {
 type OpMarkedContent extends Operator {
     % actual text
     link actualText: CosActualText?;
+    % alt
+    link alt: CosAlt?;    
 }
 
 % define marked content point
@@ -563,6 +566,8 @@ type Glyph extends Object {
 	property unicodePUA: Boolean;
 	% true if an ActualText entry is present for this glyph
 	property actualTextPresent: Boolean;
+	% true if an Alt entry is present for this glyph
+	property altPresent: Boolean;
 }
 
 % glyph in the composite font
diff --git a/src/main/java/PDLayer.mdl b/src/main/java/PDLayer.mdl
index e1d203f..f3b74f6 100644
--- a/src/main/java/PDLayer.mdl
+++ b/src/main/java/PDLayer.mdl
@@ -15,6 +15,7 @@ import org.verapdf.model.coslayer.CosBM;
 import org.verapdf.model.coslayer.CosLang;
 import org.verapdf.model.coslayer.CosTextString;
 import org.verapdf.model.coslayer.CosActualText;
+import org.verapdf.model.coslayer.CosAlt;
 
 import org.verapdf.model.operator.Operator;
 
@@ -869,6 +870,8 @@ type PDStructElem extends PDStructTreeNode {
 	property circularMappingExist: Boolean;
 	% value of the ActualText entry
 	link actualText: CosActualText?;
+	% value of the Alt entry
+	link alt: CosAlt?;	
 	% the namespace and the tag within a given namespace that is remapped to another tag within the same namespace
 	property roleMapToSameNamespaceTag: String;
 }