OpenPDF-html with GlyphLayoutManager

openpdf-html/README.md

@@ -25,6 +25,7 @@ This project is licensed under the **GNU Lesser General Public License (LGPL)**.
 - Seamless integration with OpenPDF
 - Modular architecture for easier maintenance and extension
 - API compatible with Flying saucer, except package names are org.openpdf instead of org.xhtmlrenderer.
+- Support of glyph layout for [DIN 91379](https://en.wikipedia.org/wiki/DIN_91379) and complex scripts, see [Wiki](https://github.com/LibrePDF/OpenPDF/wiki/Accents,-DIN-91379,-non-Latin-scripts).
 
 ### htmlunit-neko Parser Integration
 

openpdf-html/src/main/java/org/openpdf/pdf/ITextRenderer.java

@@ -20,6 +20,7 @@
 package org.openpdf.pdf;
 
 import org.openpdf.text.DocumentException;
+import org.openpdf.text.pdf.GlyphLayoutManager;
 import org.openpdf.text.pdf.PdfPageEvent;
 import org.openpdf.text.pdf.PdfWriter;
 import org.jspecify.annotations.Nullable;
@@ -121,6 +122,9 @@ public class ITextRenderer {
     @Nullable
     private PDFCreationListener _listener;
 
+    @Nullable
+    private GlyphLayoutManager glyphLayoutManager;
+
     public ITextRenderer(File file) throws IOException {
         this();
         File parent = file.getAbsoluteFile().getParentFile();
@@ -393,6 +397,11 @@ public void createPDF(OutputStream os, boolean finish, int initialPageNo) throws
             writer.setEncryption(_pdfEncryption.getUserPassword(), _pdfEncryption.getOwnerPassword(),
                     _pdfEncryption.getAllowedPrivileges(), _pdfEncryption.getEncryptionType());
         }
+
+        if (glyphLayoutManager != null) {
+            writer.setGlyphLayoutManager(glyphLayoutManager);
+        }
+
         _pdfDoc = doc;
         _writer = writer;
 
@@ -595,6 +604,10 @@ public List<PagePosition> findPagePositionsByID(Pattern pattern) {
         return _outputDevice.findPagePositionsByID(newLayoutContext(), pattern);
     }
 
+    public void setGlyphLayoutManager(GlyphLayoutManager glyphLayoutManager) {
+        this.glyphLayoutManager = glyphLayoutManager;
+    }
+
 
     private static final class NullUserInterface implements UserInterface {
         @Override

openpdf-html/src/test/java/org/openpdf/pdf/GlyphLayoutHtmlExample.java

@@ -0,0 +1,74 @@
+/*
+ * This file is part of the OpenPDF HTML module.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *  Volker Kunert 2026
+ */
+package org.openpdf.pdf;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Objects;
+import javax.xml.parsers.DocumentBuilderFactory;
+import org.openpdf.text.pdf.GlyphLayoutFontManager;
+import org.openpdf.text.pdf.GlyphLayoutManager;
+
+public class GlyphLayoutHtmlExample {
+
+    public static void main(String[] args) {
+        var glyphLayoutHtmlExample = new GlyphLayoutHtmlExample();
+        try {
+            glyphLayoutHtmlExample.test();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void test() throws Exception {
+        var htmlFilename = "GlyphLayoutHtmlExample.html";
+        var inputStream = this.getClass().getResourceAsStream(htmlFilename);
+        var documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+        var document = documentBuilder.parse(inputStream);
+
+        var glyphLayoutManager = new GlyphLayoutManager();
+        var fontResolver = new ITextFontResolver();
+
+        loadFont(glyphLayoutManager, fontResolver, "Arimo-Regular.ttf", 12.0f,
+                "fonts/arimo/Arimo-Regular.ttf");
+        loadFont(glyphLayoutManager, fontResolver, "Arimo-Bold.ttf", 12.0f,
+                "fonts/arimo/Arimo-Bold.ttf");
+
+        var pdfFilename = "GlyphLayoutHtmlExample.pdf";
+        try (var outputStream = new FileOutputStream(pdfFilename)) {
+            var renderer = new ITextRenderer(fontResolver);
+            renderer.setDocument(document);
+            renderer.setGlyphLayoutManager(glyphLayoutManager);
+            renderer.layout();
+            renderer.createPDF(outputStream);
+        }
+        System.out.println("PDF created: " + pdfFilename);
+    }
+
+    private void loadFont(GlyphLayoutManager glyphLayoutManager, ITextFontResolver fontResolver, String fontName,
+            float fontSize, String fontResourcePath) throws IOException, GlyphLayoutFontManager.FontLoadException {
+        var fontUrl = this.getClass().getResource(fontResourcePath);
+        Objects.requireNonNull(fontUrl, "Font not found: " + fontResourcePath);
+        try (var fontStream = fontUrl.openStream()) {
+            var font = glyphLayoutManager.loadFont(fontName, fontStream, fontSize);
+            fontResolver.addFont(font.getBaseFont(), fontUrl.getFile(), null);
+        }
+    }
+}

openpdf-html/src/test/resources/org/openpdf/pdf/GlyphLayoutHtmlExample.html

@@ -0,0 +1,79 @@
+<html lang="en">
+<head>
+  <meta charset="utf-8"/>
+  <style>
+    @page {
+      size: A4;
+      margin: 2cm;
+    }
+    body {
+      font-family: Arimo, sans-serif;
+      font-size: 12pt;
+    }
+  </style>
+  <title>Letters from DIN 91379 with OpenPDF-html</title>
+</head>
+<body>
+<h1>Letters from DIN 91379 with OpenPDF-html</h1>
+
+The list of letters from <a href="https://en.wikipedia.org/wiki/DIN_91379">DIN 91379</a> (see
+<a href="https://github.com/String-Latin/DIN-91379-Characters-and-Sequences/blob/main/latin_letters_1.3.txt">
+  latin_letters_1.3.txt</a>) is rendered with <a
+    href="https://github.com/LibrePDF/OpenPDF/tree/master/openpdf-html">OpenPDF-html</a> using
+  <a href="https://github.com/LibrePDF/OpenPDF/wiki/Accents,-DIN-91379,-non-Latin-scripts">GlyphLayoutManager</a> and
+the
+  <a href="https://github.com/googlefonts/Arimo">Arimo</a> font.
+
+<h2>bll; Latin Letters (normative)</h2>
+A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
+a b c d e f g h i j k l m n o p q r s t u v w x y z
+À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö Ø Ù Ú
+Û Ü Ý Þ ß à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô
+õ ö ø ù ú û ü ý þ ÿ Ā ā Ă ă Ą ą Ć ć Ĉ ĉ Ċ ċ Č č Ď ď
+Đ đ Ē ē Ĕ ĕ Ė ė Ę ę Ě ě Ĝ ĝ Ğ ğ Ġ ġ Ģ ģ Ĥ ĥ Ħ ħ Ĩ ĩ
+Ī ī Ĭ ĭ Į į İ ı IJ ij Ĵ ĵ Ķ ķ ĸ Ĺ ĺ Ļ ļ Ľ ľ Ŀ ŀ Ł ł Ń
+ń Ņ ņ Ň ň ʼn Ŋ ŋ Ō ō Ŏ ŏ Ő ő Œ œ Ŕ ŕ Ŗ ŗ Ř ř Ś ś Ŝ ŝ
+Ş ş Š š Ţ ţ Ť ť Ŧ ŧ Ũ ũ Ū ū Ŭ ŭ Ů ů Ű ű Ų ų Ŵ ŵ Ŷ ŷ
+Ÿ Ź ź Ż ż Ž ž Ƈ ƈ Ə Ɨ Ơ ơ Ư ư Ʒ Ǎ ǎ Ǐ ǐ Ǒ ǒ Ǔ ǔ Ǖ ǖ
+Ǘ ǘ Ǚ ǚ Ǜ ǜ Ǟ ǟ Ǣ ǣ Ǥ ǥ Ǧ ǧ Ǩ ǩ Ǫ ǫ Ǭ ǭ Ǯ ǯ ǰ Ǵ ǵ Ǹ
+ǹ Ǻ ǻ Ǽ ǽ Ǿ ǿ Ȓ ȓ Ș ș Ț ț Ȟ ȟ ȧ Ȩ ȩ Ȫ ȫ Ȭ ȭ Ȯ ȯ Ȱ ȱ
+Ȳ ȳ ə ɨ ʒ Ḃ ḃ Ḇ ḇ Ḋ ḋ Ḍ ḍ Ḏ ḏ Ḑ ḑ ḗ Ḝ ḝ Ḟ ḟ Ḡ ḡ Ḣ ḣ
+Ḥ ḥ Ḧ ḧ Ḩ ḩ Ḫ ḫ ḯ Ḱ ḱ Ḳ ḳ Ḵ ḵ Ḷ ḷ Ḻ ḻ Ṁ ṁ Ṃ ṃ Ṅ ṅ Ṇ
+ṇ Ṉ ṉ Ṓ ṓ Ṕ ṕ Ṗ ṗ Ṙ ṙ Ṛ ṛ Ṟ ṟ Ṡ ṡ Ṣ ṣ Ṫ ṫ Ṭ ṭ Ṯ ṯ Ẁ
+ẁ Ẃ ẃ Ẅ ẅ Ẇ ẇ Ẍ ẍ Ẏ ẏ Ẑ ẑ Ẓ ẓ Ẕ ẕ ẖ ẗ ẞ Ạ ạ Ả ả Ấ ấ
+Ầ ầ Ẩ ẩ Ẫ ẫ Ậ ậ Ắ ắ Ằ ằ Ẳ ẳ Ẵ ẵ Ặ ặ Ẹ ẹ Ẻ ẻ Ẽ ẽ Ế ế
+Ề ề Ể ể Ễ ễ Ệ ệ Ỉ ỉ Ị ị Ọ ọ Ỏ ỏ Ố ố Ồ ồ Ổ ổ Ỗ ỗ Ộ ộ
+Ớ ớ Ờ ờ Ở ở Ỡ ỡ Ợ ợ Ụ ụ Ủ ủ Ứ ứ Ừ ừ Ử ử Ữ ữ Ự ự Ỳ ỳ
+Ỵ ỵ Ỷ ỷ Ỹ ỹ
+<h3>Sequences</h3>
+A̋ C̀ C̄ C̆ C̈ C̕ C̣ C̦ C̨̆ D̂ F̀ F̄ G̀ H̄ H̦ H̱ J́ J̌ K̀ K̂ K̄ K̇ K̕ K̛ K̦ K͟H
+K͟h L̂ L̥ L̥̄ L̦ M̀ M̂ M̆ M̐ N̂ N̄ N̆ N̦ P̀ P̄ P̕ P̣ R̆ R̥ R̥̄ S̀ S̄ S̛̄ S̱ T̀ T̄
+T̈ T̕ T̛ U̇ Z̀ Z̄ Z̆ Z̈ Z̧ a̋ c̀ c̄ c̆ c̈ c̕ c̣ c̦ c̨̆ d̂ f̀ f̄ g̀ h̄ h̦ j́ k̀
+k̂ k̄ k̇ k̕ k̛ k̦ k͟h l̂ l̥ l̥̄ l̦ m̀ m̂ m̆ m̐ n̂ n̄ n̆ n̦ p̀ p̄ p̕ p̣ r̆ r̥ r̥̄
+s̀ s̄ s̛̄ s̱ t̀ t̄ t̕ t̛ u̇ z̀ z̄ z̆ z̈ z̧ Ç̆ Û̄ ç̆ û̄ ÿ́ Č̕ Č̣ č̕ č̣ ē̍ Ī́ ī́
+ō̍ Ž̦ Ž̧ ž̦ ž̧ Ḳ̄ ḳ̄ Ṣ̄ ṣ̄ Ṭ̄ ṭ̄ Ạ̈ ạ̈ Ọ̈ ọ̈ Ụ̄ Ụ̈ ụ̄ ụ̈
+<h2>bnlreq; Non-Letters N1 (normative)</h2>
+  ' , - . ` ~ ¨ ´ · ʹ ʺ ʾ ʿ ˈ ˌ ’ ‡
+<h2>bnl; Non-Letters N2 (normative)</h2>
+<![CDATA[! " # $ % & ( ) * + / 0 1 2 3 4 5 6 7 8 9 : ; < = >
+? @ [ \ ] ^ _ { | } ¡ ¢ £ ¥ § © ª « ¬ ® ¯ ° ± ² ³ µ
+¶ ¹ º » ¿ × ÷ €]]>
+<h2>bnlopt; Non-Letters N3 (normative)</h2>
+¤ ¦ ¸ ¼ ½ ¾
+<h2>bnlnot; Non-Letters N4 (normative) </h2>
+-omitted-
+<h2>dc; Combining diacritics (normative)</h2>
+-omitted-
+<h2>gl; Greek Letters (extended)</h2>
+Ά Έ Ή Ί Ό Ύ Ώ ΐ Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ
+Τ Υ Φ Χ Ψ Ω Ϊ Ϋ ά έ ή ί ΰ α β γ δ ε ζ η θ ι κ λ μ ν
+ξ ο π ρ ς σ τ υ φ χ ψ ω ϊ ϋ ό ύ ώ
+<h2>cl; Cyrillic Letters (extended)</h2>
+Ѝ А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш
+Щ Ъ Ь Ю Я а б в г д е ж з и й к л м н о п р с т у ф
+х ц ч ш щ ъ ь ю я ѝ
+<h2>enl; Non-Letters E1 (extended)</h2>
+ƒ ʰ ʳ ˆ ˜ ˢ ᵈ ᵗ ‘ ‚ “ ” „ † … ‰ ′ ″ ‹ › ⁰ ⁴ ⁵ ⁶ ⁷ ⁸
+⁹ ⁿ ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ™ ∞ ≤ ≥
+</body>
+</html>

openpdf-html/src/test/resources/org/openpdf/pdf/fonts/arimo/OFL.txt

@@ -0,0 +1,93 @@
+Copyright 2026 The Arimo Project Authors (https://github.com/googlefonts/Arimo)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+https://openfontlicense.org
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.