feat(api): Add Stylesheets for PDF

src/api/src/create_book.py

@@ -525,13 +525,18 @@ class PDFGenerator:
             [chapter.file.name for chapter in chapters],
             self.file.name,
             cover=cover_file.file.name,
-            toc={"toc-header-text": "Table of Contents"},
+            toc={
+                "toc-header-text": "Table of Contents",
+                "xsl-style-sheet": "./pdf/toc.xsl",
+            },
             options={
-                "footer-html": "footer.html",
+                "footer-html": "./pdf/footer.html",
                 "margin-top": "10mm",
                 "margin-bottom": "10mm",
                 "title": self.data["title"],
                 "encoding": "UTF-8",
+                "user-style-sheet": "./pdf/stylesheet.css",
+                "enable-local-file-access": "",
             },
             cover_first=True,
         )

src/api/src/pdf/fonts/OFL.txt

@@ -0,0 +1,94 @@
+Copyright (c) 2010, ParaType Ltd. (http://www.paratype.com/public),
+with Reserved Font Names "PT Sans", "PT Serif" and "ParaType".
+
+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.

src/api/src/pdf/stylesheet.css

@@ -0,0 +1,71 @@
+@font-face {
+  font-family: 'PT Serif';
+  src: url('/tmp/fonts/PTSerif-Regular.ttf') format('truetype');
+  font-weight: 400;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'PT Serif';
+  src: url('/tmp/fonts/PTSerif-Bold.ttf') format('truetype');
+  font-weight: 700;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'PT Serif';
+  src: url('/tmp/fonts/PTSerif-Italic.ttf') format('truetype');
+  font-weight: 400;
+  font-style: italic;
+}
+
+@font-face {
+  font-family: 'PT Serif';
+  src: url('/tmp/fonts/PTSerif-BoldItalic.ttf') format('truetype');
+  font-weight: 700;
+  font-style: italic;
+}
+
+.pt-serif-regular {
+  font-family: "PT Serif", serif;
+  font-weight: 400;
+  font-style: normal;
+}
+
+.pt-serif-bold {
+  font-family: "PT Serif", serif;
+  font-weight: 700;
+  font-style: normal;
+}
+
+.pt-serif-regular-italic {
+  font-family: "PT Serif", serif;
+  font-weight: 400;
+  font-style: italic;
+}
+
+.pt-serif-bold-italic {
+  font-family: "PT Serif", serif;
+  font-weight: 700;
+  font-style: italic;
+}
+
+
+
+h1 {
+  text-align: center;
+  font-family: "PT Serif", serif !important;
+  font-weight: 700 !important;
+  font-style: normal !important;
+  font-size: 36px !important; /* Uniform size */
+  margin-bottom: 20px; /* Space below the heading */
+  border-bottom: 2px solid rgb(100, 100, 100); /* Black line */
+  padding-bottom: 10px; /* Space between text and line */
+}
+
+p {
+  font-size: 16px !important; /* Standardize paragraph size */
+  line-height: 1.6 !important; /* Improve readability */
+  margin: 10px 0 !important; /* Space between paragraphs */
+}
+

src/api/src/pdf/toc.xsl

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet version="2.0"
+                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                xmlns:outline="http://wkhtmltopdf.org/outline"
+                xmlns="http://www.w3.org/1999/xhtml">
+  <xsl:output doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN"
+              doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
+              indent="yes" />
+  <xsl:template match="outline:outline">
+    <html>
+      <head>
+<style>
+@font-face {
+  font-family: 'PT Serif';
+  src: url('./fonts/PTSerif-Regular.ttf') format('truetype');
+  font-weight: 400;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'PT Serif';
+  src: url('./fonts/PTSerif-Bold.ttf') format('truetype');
+  font-weight: 700;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'PT Serif';
+  src: url('./fonts/PTSerif-Italic.ttf') format('truetype');
+  font-weight: 400;
+  font-style: italic;
+}
+
+@font-face {
+  font-family: 'PT Serif';
+  src: url('./fonts/PTSerif-BoldItalic.ttf') format('truetype');
+  font-weight: 700;
+  font-style: italic;
+}
+
+.pt-serif-regular {
+  font-family: "PT Serif", serif;
+  font-weight: 400;
+  font-style: normal;
+}
+
+.pt-serif-bold {
+  font-family: "PT Serif", serif;
+  font-weight: 700;
+  font-style: normal;
+}
+
+.pt-serif-regular-italic {
+  font-family: "PT Serif", serif;
+  font-weight: 400;
+  font-style: italic;
+}
+
+.pt-serif-bold-italic {
+  font-family: "PT Serif", serif;
+  font-weight: 700;
+  font-style: italic;
+}
+
+
+h1 {
+  text-align: center;
+  font-family: "PT Serif", serif !important;
+  font-weight: 700 !important;
+  font-style: normal !important;
+  font-size: 36px !important; /* Uniform size */
+  margin-bottom: 20px; /* Space below the heading */
+  border-bottom: 4px solid black; /* Black line */
+  padding-bottom: 10px; /* Space between text and line */
+}
+
+
+          div {border-bottom: 1px dashed rgb(100,000,100);
+          padding-top: 5px;}
+          span {float: right;}
+          li {list-style: none;}
+          ul {
+            font-size: 22px;
+            font-family: arial;
+          }
+          ul ul {font-size: 80%; }
+          ul {padding-left: 0em;}
+          ul ul {padding-left: 1em;}
+          a {text-decoration:none; color: black;}
+        </style>
+      </head>
+      <body>
+        <h1>Table of Contents</h1>
+        <ul><xsl:apply-templates select="outline:item/outline:item"/></ul>
+      </body>
+    </html>
+  </xsl:template>
+  <xsl:template match="outline:item">
+    <li>
+      <xsl:if test="@title!=''">
+        <div>
+          <a class="pt-serif-regular">
+            <xsl:if test="@link">
+              <xsl:attribute name="href"><xsl:value-of select="@link"/></xsl:attribute>
+            </xsl:if>
+            <xsl:if test="@backLink">
+              <xsl:attribute name="name"><xsl:value-of select="@backLink"/></xsl:attribute>
+            </xsl:if>
+            <xsl:value-of select="@title" /> 
+          </a>
+          <span> <xsl:value-of select="@page" /> </span>
+        </div>
+      </xsl:if>
+      <ul>
+        <xsl:comment>added to prevent self-closing tags in QtXmlPatterns</xsl:comment>
+        <xsl:apply-templates select="outline:item"/>
+      </ul>
+    </li>
+  </xsl:template>
+</xsl:stylesheet>