fix(js reader): adjust height to dynamic viewport height, add amber theme

.gitignore

@@ -35,3 +35,5 @@ gdrive_credentials
 client_secrets.json
 gmail.json
 /.key
+calibre-volume
+calibre-web-env

cps/static/css/epub_themes.css

@@ -5,7 +5,7 @@
 
 .darkTheme {
   background: #202124;
-	color: #fff
+  color: #fff;
 }
 
 .sepiaTheme {
@@ -13,6 +13,11 @@
   color: #000;
 }
 
+.amberTheme {
+  background: #e8bf5e;
+  color: #000;
+}
+
 .blackTheme {
   background: #000;
   color: #fff;

cps/static/css/main.css

@@ -1,11 +1,10 @@
 @font-face {
-  font-family: 'fontello';
+  font-family: "fontello";
-  src: url('fonts/fontello.eot?60518104');
+  src: url("fonts/fontello.eot?60518104");
-  src:
+  src: url("fonts/fontello.eot?60518104#iefix") format("embedded-opentype"),
-    url('fonts/fontello.eot?60518104#iefix') format('embedded-opentype'),
+    url("fonts/fontello.woff?60518104") format("woff"),
-    url('fonts/fontello.woff?60518104') format('woff'),
+    url("fonts/fontello.ttf?60518104") format("truetype"),
-    url('fonts/fontello.ttf?60518104') format('truetype'),
+    url("fonts/fontello.svg?60518104#fontello") format("svg");
-    url('fonts/fontello.svg?60518104#fontello') format('svg');
   font-weight: normal;
   font-style: normal;
 }
@@ -48,7 +47,7 @@ body {
   -webkit-transition: opacity 0.5s;
   -moz-transition: opacity 0.5s;
   transition: opacity 0.5s;
-  z-index: 10;
+  z-index: 100;
 }
 
 #titlebar:hover {
@@ -93,14 +92,18 @@ body {
   box-shadow: inset 0 0 6px rgba(155, 155, 155, 0.8);
 }
 
-#book-title { font-weight: 600; }
+#book-title {
-#title-seperator { display: none; }
+  font-weight: 600;
+}
+#title-seperator {
+  display: none;
+}
 
 #viewer {
   width: 80%;
   height: 80%;
   margin: 0 auto;
-  z-index: 2;
+  z-index: 0;
   position: relative;
   overflow: hidden;
 }
@@ -136,6 +139,7 @@ body {
   user-select: none;
   padding-top: 160px;
   padding-bottom: 160px;
+  z-index: 10;
 }
 
 .arrow:hover {
@@ -200,10 +204,16 @@ body {
   max-width: 80%;
 }
 
-#title-controls { float: right; }
+#title-controls {
+  float: right;
+}
 
-#panels a::before { visibility: visible; }
+#panels a::before {
-#panels a:hover { color: #aaa; }
+  visibility: visible;
+}
+#panels a:hover {
+  color: #aaa;
+}
 
 .list_item.currentChapter > a,
 .list_item a:hover {
@@ -237,8 +247,12 @@ body {
   margin-top: -1px;
 }
 
-input::-webkit-input-placeholder { color: #454545; }
+input::-webkit-input-placeholder {
-input:-moz-placeholder { color: #454545; }
+  color: #454545;
+}
+input:-moz-placeholder {
+  color: #454545;
+}
 
 #divider {
   position: absolute;
@@ -378,14 +392,14 @@ input:-moz-placeholder { color: #454545; }
 }
 
 .toc_toggle::before {
-  content: '▸';
+  content: "▸";
   color: #fff;
   margin-right: -4px;
 }
 
 .currentChapter > .toc_toggle::before,
 .openChapter > .toc_toggle::before {
-  content: '▾';
+  content: "▾";
 }
 
 .view {
@@ -499,13 +513,25 @@ input:-moz-placeholder { color: #454545; }
   list-style-type: none;
 }
 
-#settingsPanel .xsmall { font-size: x-small; }
+#settingsPanel .xsmall {
-#settingsPanel .small { font-size: small; }
+  font-size: x-small;
-#settingsPanel .medium { font-size: medium; }
+}
-#settingsPanel .large { font-size: large; }
+#settingsPanel .small {
-#settingsPanel .xlarge { font-size: x-large; }
+  font-size: small;
+}
+#settingsPanel .medium {
+  font-size: medium;
+}
+#settingsPanel .large {
+  font-size: large;
+}
+#settingsPanel .xlarge {
+  font-size: x-large;
+}
 
-.highlight { background-color: yellow; }
+.highlight {
+  background-color: yellow;
+}
 
 .modal {
   position: fixed;
@@ -581,6 +607,7 @@ input:-moz-placeholder { color: #454545; }
   color: white;
 }
 
+.md-content .themes button.lightTheme,
 .md-content .themes button.whiteTheme {
   background-color: white;
   color: black;
@@ -591,6 +618,11 @@ input:-moz-placeholder { color: #454545; }
   color: black;
 }
 
+.md-content .themes button.amberTheme {
+  background-color: #e8bf5e;
+  color: black;
+}
+
 .md-content .themes button.blackTheme {
   background-color: black;
   color: white;
@@ -638,31 +670,47 @@ input:-moz-placeholder { color: #454545; }
 
 @media only screen and (max-width: 900px) {
   #viewer {
-    width: 60%;
+    width: 100%;
-    margin-left: 20%;
+    height: calc(100dvh - 99px);
+    margin-left: 0;
+  }
+
+  #viewer iframe {
+    width: 100%;
+    height: 100%;
   }
 
   #prev {
     left: 20px;
+    z-index: 10;
   }
 
   #next {
     right: 20px;
+    z-index: 10;
   }
 }
 
 @media only screen and (max-width: 550px) {
   #viewer {
-    width: 80%;
+    width: 100%;
-    margin-left: 10%;
+    height: calc(100dvh - 99px);
+    margin-left: 0;
+  }
+
+  #viewer iframe {
+    width: 100%;
+    height: 100%;
   }
 
   #prev {
     left: 0;
+    z-index: 10;
   }
 
   #next {
     right: 0;
+    z-index: 10;
   }
 
   .arrow {
@@ -712,11 +760,7 @@ input:-moz-placeholder { color: #454545; }
   }
 }
 
-@media only screen
+@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) and (orientation: landscape) /* and (-webkit-min-device-pixel-ratio: 2) */ {
-  and (min-device-width: 768px)
-  and (max-device-width: 1024px)
-  and (orientation: landscape)
-  /* and (-webkit-min-device-pixel-ratio: 2)*/ {
   #viewer {
     width: 80%;
     margin-left: 10%;
@@ -739,47 +783,52 @@ input:-moz-placeholder { color: #454545; }
 /* For iPhone 6\6s portrait layouts only */
 @media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (orientation: portrait) {
   #viewer {
-    width: 300px;
+    width: 100%;
-    height: 480px;
+    height: calc(100dvh - 99px);
   }
 
   #viewer iframe {
-   width: 300px;
+    width: 100%;
-   height: 480px;
+    height: 100%;
   }
 }
 
 /* For iPhone 6\6s landscape layouts only */
 @media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (orientation: landscape) {
   #viewer {
-    width: 450px;
+    width: 100%;
-    height: 300px;
+    height: calc(100dvh - 99px);
   }
 
   #viewer iframe {
-    width: 450px;
+    width: 100%;
-    height: 300px;
+    height: 100%;
   }
 }
 
 /* For iPhone portrait layouts only */
 @media only screen and (max-device-width: 374px) and (orientation: portrait) {
   #viewer {
-    width: 256px;
+    width: 100%;
-    height: 432px;
+    height: calc(100dvh - 99px);
   }
 
   #viewer iframe {
-    width: 256px;
+    width: 100%;
-    height: 432px;
+    height: 100%;
   }
 }
 
 /* For iPhone landscape layouts only */
 @media only screen and (max-device-width: 374px) and (orientation: landscape) {
+  #viewer {
+    width: 100%;
+    height: calc(100dvh - 99px);
+  }
+
   #viewer iframe {
-    width: 256px;
+    width: 100%;
-    height: 124px;
+    height: 100%;
   }
 }
 
@@ -803,32 +852,76 @@ input:-moz-placeholder { color: #454545; }
   font-size: 112%;
 }
 
-.icon-search::before { content: '\e807'; } /* '' */
+.icon-search::before {
-.icon-resize-full-1::before { content: '\e804'; } /* '' */
+  content: "\e807";
-.icon-cancel-circled2::before { content: '\e80f'; } /* '' */
+} /* '' */
-.icon-link::before { content: '\e80d'; } /* '' */
+.icon-resize-full-1::before {
-.icon-bookmark::before { content: '\e805'; } /* '' */
+  content: "\e804";
-.icon-bookmark-empty::before { content: '\e806'; } /* '' */
+} /* '' */
-.icon-download-cloud::before { content: '\e811'; } /* '' */
+.icon-cancel-circled2::before {
-.icon-edit::before { content: '\e814'; } /* '' */
+  content: "\e80f";
-.icon-menu::before { content: '\e802'; } /* '' */
+} /* '' */
-.icon-cog::before { content: '\e813'; } /* '' */
+.icon-link::before {
-.icon-resize-full::before { content: '\e812'; } /* '' */
+  content: "\e80d";
-.icon-cancel-circled::before { content: '\e80e'; } /* '' */
+} /* '' */
-.icon-up-dir::before { content: '\e80c'; } /* '' */
+.icon-bookmark::before {
-.icon-right-dir::before { content: '\e80b'; } /* '' */
+  content: "\e805";
-.icon-angle-right::before { content: '\e809'; } /* '' */
+} /* '' */
-.icon-angle-down::before { content: '\e80a'; } /* '' */
+.icon-bookmark-empty::before {
-.icon-right::before { content: '\e815'; } /* '' */
+  content: "\e806";
-.icon-list-1::before { content: '\e803'; } /* '' */
+} /* '' */
-.icon-list-numbered::before { content: '\e801'; } /* '' */
+.icon-download-cloud::before {
-.icon-columns::before { content: '\e810'; } /* '' */
+  content: "\e811";
-.icon-list::before { content: '\e800'; } /* '' */
+} /* '' */
-.icon-resize-small::before { content: '\e808'; } /* '' */
+.icon-edit::before {
+  content: "\e814";
+} /* '' */
+.icon-menu::before {
+  content: "\e802";
+} /* '' */
+.icon-cog::before {
+  content: "\e813";
+} /* '' */
+.icon-resize-full::before {
+  content: "\e812";
+} /* '' */
+.icon-cancel-circled::before {
+  content: "\e80e";
+} /* '' */
+.icon-up-dir::before {
+  content: "\e80c";
+} /* '' */
+.icon-right-dir::before {
+  content: "\e80b";
+} /* '' */
+.icon-angle-right::before {
+  content: "\e809";
+} /* '' */
+.icon-angle-down::before {
+  content: "\e80a";
+} /* '' */
+.icon-right::before {
+  content: "\e815";
+} /* '' */
+.icon-list-1::before {
+  content: "\e803";
+} /* '' */
+.icon-list-numbered::before {
+  content: "\e801";
+} /* '' */
+.icon-columns::before {
+  content: "\e810";
+} /* '' */
+.icon-list::before {
+  content: "\e800";
+} /* '' */
+.icon-resize-small::before {
+  content: "\e808";
+} /* '' */
 
 #progress {
   right: 4rem;
-    bottom: 4rem;
+  bottom: 2px;
   width: fit-content;
   position: absolute;
 }

cps/templates/read.html

@@ -1,39 +1,65 @@
 <!DOCTYPE html>
 <html class="no-js">
-
   <head>
-    <meta charset="utf-8">
+    <meta charset="utf-8" />
-    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
     <title>{{_('epub Reader')}} | {{title}}</title>
-    <meta name="description" content="">
+    <meta name="description" content="" />
-    <meta name="viewport" content="width=device-width, user-scalable=no">
+    <meta name="viewport" content="width=device-width, user-scalable=no" />
-    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-capable" content="yes" />
     {% if g.google_site_verification|length > 0 %}
-    <meta name="google-site-verification" content="{{g.google_site_verification}}">
+    <meta
+      name="google-site-verification"
+      content="{{g.google_site_verification}}"
+    />
     {% endif %}
-    <link rel="apple-touch-icon" sizes="140x140" href="{{ url_for('static', filename='favicon.ico') }}">
+    <link
-    <link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
+      rel="apple-touch-icon"
+      sizes="140x140"
+      href="{{ url_for('static', filename='favicon.ico') }}"
+    />
+    <link
+      rel="shortcut icon"
+      href="{{ url_for('static', filename='favicon.ico') }}"
+    />
 
-    <link rel="stylesheet" href="{{ url_for('static', filename='css/libs/normalize.css') }}">
+    <link
-    <link rel="stylesheet" href="{{ url_for('static', filename='css/main.css') }}">
+      rel="stylesheet"
-    <link rel="stylesheet" href="{{ url_for('static', filename='css/popup.css') }}">
+      href="{{ url_for('static', filename='css/libs/normalize.css') }}"
-    <link rel="stylesheet" href="{{ url_for('static', filename='css/reader.css') }}">
+    />
+    <link
+      rel="stylesheet"
+      href="{{ url_for('static', filename='css/main.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      href="{{ url_for('static', filename='css/popup.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      href="{{ url_for('static', filename='css/reader.css') }}"
+    />
   </head>
 
   <body>
     <div id="sidebar">
       <div id="panels">
-            <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+        <input type="hidden" name="csrf_token" value="{{ csrf_token() }}" />
         <!--input id="searchBox" placeholder="search" type="search"-->
 
         <!--a id="show-Search" class="show_view icon-search" data-view="Search">Search</a-->
-            <a id="show-Toc" class="show_view icon-list-1 active" data-view="Toc">TOC</a>
+        <a id="show-Toc" class="show_view icon-list-1 active" data-view="Toc"
-            <a id="show-Bookmarks" class="show_view icon-bookmark" data-view="Bookmarks">Bookmarks</a>
+          >TOC</a
+        >
+        <a
+          id="show-Bookmarks"
+          class="show_view icon-bookmark"
+          data-view="Bookmarks"
+          >Bookmarks</a
+        >
         <!--a id="show-Notes" class="show_view icon-edit" data-view="Notes">Notes</a-->
-
-        </div>
-        <div id="tocView" class="view">
       </div>
+      <div id="tocView" class="view"></div>
       <!--div id="searchView" class="view">
           <ul id="searchResults"></ul>
         </div-->
@@ -49,7 +75,6 @@
         </div-->
     </div>
     <div id="main">
-
       <div id="titlebar">
         <div id="opener">
           <a id="slider" class="icon-menu">Menu</a>
@@ -71,7 +96,9 @@
       <div id="viewer"></div>
       <div id="next" class="arrow">›</div>
       <div id="progress">0%</div>
-	    <div id="loader"><img src="{{ url_for('static', filename='img/loader.gif') }}"></div>
+      <div id="loader">
+        <img src="{{ url_for('static', filename='img/loader.gif') }}" />
+      </div>
     </div>
     <div class="modal md-effect-1" id="settings-modal">
       <div class="md-content">
@@ -80,83 +107,147 @@
           {{_('Choose a theme below:')}}}<br />
 
           <!-- Hardcoded a tick in the light theme button because it is the "default" theme. Need to find a way to do this dynamically on startup-->
-                <button type="button" id="lightTheme" class="lightTheme" onclick="selectTheme(this.id)"><span
+          <button
-                        id="lightSelected">✓</span>{{_('Light')}}</button>
+            type="button"
-                <button type="button" id="darkTheme" class="darkTheme" onclick="selectTheme(this.id)"><span
+            id="lightTheme"
-                        id="darkSelected"> </span>{{_('Dark')}}</button>
+            class="lightTheme"
-                <button type="button" id="sepiaTheme" class="sepiaTheme" onclick="selectTheme(this.id)"><span
+            onclick="selectTheme(this.id)"
-                        id="sepiaSelected"> </span>{{_('Sepia')}}</button>
+          >
-                <button type="button" id="blackTheme" class="blackTheme" onclick="selectTheme(this.id)"><span
+            <span id="lightSelected">✓</span>{{_('Light')}}
-                        id="blackSelected"> </span>{{_('Black')}}</button>
+          </button>
+          <button
+            type="button"
+            id="darkTheme"
+            class="darkTheme"
+            onclick="selectTheme(this.id)"
+          >
+            <span id="darkSelected"> </span>{{_('Dark')}}
+          </button>
+          <button
+            type="button"
+            id="sepiaTheme"
+            class="sepiaTheme"
+            onclick="selectTheme(this.id)"
+          >
+            <span id="sepiaSelected"> </span>{{_('Sepia')}}
+          </button>
+          <button
+            type="button"
+            id="amberTheme"
+            class="amberTheme"
+            onclick="selectTheme(this.id)"
+          >
+            <span id="amberSelected"> </span>{{_('Amber')}}
+          </button>
+          <button
+            type="button"
+            id="blackTheme"
+            class="blackTheme"
+            onclick="selectTheme(this.id)"
+          >
+            <span id="blackSelected"> </span>{{_('Black')}}
+          </button>
         </div>
         <div class="form-group">
           <p>
-                    <input type="checkbox" id="sidebarReflow"
+            <input
-                        name="sidebarReflow">{{_('Reflow text when sidebars are open.')}}
+              type="checkbox"
+              id="sidebarReflow"
+              name="sidebarReflow"
+            />{{_('Reflow text when sidebars are open.')}}
           </p>
         </div>
         <div class="form-group fontSizeWrapper">
           <div class="slider">
             <label for="fader">{{ _('Font Sizes') }}</label>
-                    <input type="range" min="75" max="200" value="100" id="fontSizeFader" step="25">
+            <input
+              type="range"
+              min="75"
+              max="200"
+              value="100"
+              id="fontSizeFader"
+              step="25"
+            />
           </div>
         </div>
         <div class="font" id="font">
           <label class="item">{{_('Font')}}:</label>
-                <button type="button" id="default" onclick="selectFont(this.id)"><span>✓</span>{{_('Default')}}</button> 
+          <button type="button" id="default" onclick="selectFont(this.id)">
-                <button type="button" id="Yahei" onclick="selectFont(this.id)"><span></span>{{_('Yahei')}}</button>
+            <span>✓</span>{{_('Default')}}
-                <button type="button" id="SimSun" onclick="selectFont(this.id)"><span></span>{{_('SimSun')}}</button>
+          </button>
-                <button type="button" id="KaiTi" onclick="selectFont(this.id)"><span></span>{{_('KaiTi')}}</button>
+          <button type="button" id="Yahei" onclick="selectFont(this.id)">
-                <button type="button" id="Arial" onclick="selectFont(this.id)"><span></span>{{_('Arial')}}</button>
+            <span></span>{{_('Yahei')}}
+          </button>
+          <button type="button" id="SimSun" onclick="selectFont(this.id)">
+            <span></span>{{_('SimSun')}}
+          </button>
+          <button type="button" id="KaiTi" onclick="selectFont(this.id)">
+            <span></span>{{_('KaiTi')}}
+          </button>
+          <button type="button" id="Arial" onclick="selectFont(this.id)">
+            <span></span>{{_('Arial')}}
+          </button>
         </div>
         <div class="layou" id="layout">
           <label class="item">{{ _('Spread') }}:</label>
-                <button type="button" id="spread" onclick="spread(this.id)"><span>✓</span>{{_('Two columns')}}</button>
+          <button type="button" id="spread" onclick="spread(this.id)">
-                <button type="button" id="nonespread" onclick="spread(this.id)"><span></span>{{_('One column')}}</button>
+            <span>✓</span>{{_('Two columns')}}
+          </button>
+          <button type="button" id="nonespread" onclick="spread(this.id)">
+            <span></span>{{_('One column')}}
+          </button>
         </div>
         <div class="closer icon-cancel-circled"></div>
       </div>
     </div>
     <div class="overlay"></div>
     <script src="{{ url_for('static', filename='js/libs/jquery.min.js') }}"></script>
-    <script src="{{ url_for('static', filename='js/compress/jszip_epub.min.js') }}">
+    <script src="{{ url_for('static', filename='js/compress/jszip_epub.min.js') }}"></script>
-    </script>
     <script src="{{ url_for('static', filename='js/libs/epub.min.js') }}"></script>
     <script type="text/javascript">
       window.calibre = {
         filePath: "{{ url_for('static', filename='js/libs/') }}",
         cssPath: "{{ url_for('static', filename='css/') }}",
-            bookmarkUrl: "{{ url_for('web.set_bookmark', book_id=bookid, book_format=book_format) }}",
+        bookmarkUrl:
-            bookUrl: "{{ url_for('web.serve_book', book_id=bookid, book_format=book_format, anyname='file.epub') }}",
+          "{{ url_for('web.set_bookmark', book_id=bookid, book_format=book_format) }}",
+        bookUrl:
+          "{{ url_for('web.serve_book', book_id=bookid, book_format=book_format, anyname='file.epub') }}",
         bookmark: "{{ bookmark.bookmark_key if bookmark != None }}",
-            useBookmarks: "{{ current_user.is_authenticated | tojson }}"
+        useBookmarks: "{{ current_user.is_authenticated | tojson }}",
       };
 
       window.themes = {
-            "darkTheme": {
+        darkTheme: {
-                "bgColor": "#202124",
+          bgColor: "#202124",
-                "css_path": "{{ url_for('static', filename='css/epub_themes.css') }}",
+          css_path: "{{ url_for('static', filename='css/epub_themes.css') }}",
-                "title-color": "#fff"
+          "title-color": "#fff",
         },
-            "lightTheme": {
+        lightTheme: {
-                "bgColor": "white",
+          bgColor: "white",
-                "css_path": "{{ url_for('static', filename='css/epub_themes.css') }}",
+          css_path: "{{ url_for('static', filename='css/epub_themes.css') }}",
-                "title-color": "#4f4f4f"
+          "title-color": "#4f4f4f",
         },
-            "sepiaTheme": {
+        sepiaTheme: {
-                "bgColor": "#ece1ca",
+          bgColor: "#ece1ca",
-                "css_path": "{{ url_for('static', filename='css/epub_themes.css') }}",
+          css_path: "{{ url_for('static', filename='css/epub_themes.css') }}",
-                "title-color": "#4f4f4f"
+          "title-color": "#4f4f4f",
         },
-            "blackTheme": {
+        amberTheme: {
-                "bgColor": "black",
+          bgColor: "#e8bf5e",
-                "css_path": "{{ url_for('static', filename='css/epub_themes.css') }}",
+          css_path: "{{ url_for('static', filename='css/epub_themes.css') }}",
-                "title-color": "#fff"
+          "title-color": "#4f4f4f",
+        },
+        blackTheme: {
+          bgColor: "black",
+          css_path: "{{ url_for('static', filename='css/epub_themes.css') }}",
+          "title-color": "#fff",
         },
       };
 
       function selectTheme(id) {
-            let tickSpans = document.getElementById("themes").querySelectorAll("span");
+        let tickSpans = document
+          .getElementById("themes")
+          .querySelectorAll("span");
 
         // Remove tick mark from all theme buttons
         tickSpans.forEach(function (tickSpan) {
@@ -173,13 +264,16 @@
         reader.rendition.themes.select(id);
 
         // Apply theme to rest of the page.
-            document.getElementById("main").style.backgroundColor = themes[id]["bgColor"];
+        document.getElementById("main").style.backgroundColor =
-            document.getElementById("titlebar").style.color = themes[id]["title-color"] || "#fff";
+          themes[id]["bgColor"];
-            document.getElementById("progress").style.color = themes[id]["title-color"] || "#fff";
+        document.getElementById("titlebar").style.color =
+          themes[id]["title-color"] || "#fff";
+        document.getElementById("progress").style.color =
+          themes[id]["title-color"] || "#fff";
       }
 
       // font size settings logic
-        let fontSizeFader = document.getElementById('fontSizeFader');
+      let fontSizeFader = document.getElementById("fontSizeFader");
       fontSizeFader.addEventListener("change", function () {
         reader.rendition.themes.fontSize(`${this.value}%`);
       });
@@ -188,7 +282,7 @@
 
       function selectFont(id) {
         if (!defaultFont) {
-            defaultFont = reader.rendition.getContents()[0]?.css('font-family');
+          defaultFont = reader.rendition.getContents()[0]?.css("font-family");
         }
 
         spans = document.getElementById("font").querySelectorAll("span");
@@ -197,7 +291,7 @@
         }
         document.getElementById(id).querySelector("span").textContent = "✓";
 
-          if (id == 'default') {
+        if (id == "default") {
           reader.rendition.themes.font(defaultFont);
           return;
         }
@@ -210,7 +304,7 @@
           spans[i].textContent = "";
         }
         document.getElementById(id).querySelector("span").textContent = "✓";
-          reader.rendition.spread(id==='spread'?true:'none');
+        reader.rendition.spread(id === "spread" ? true : "none");
       }
     </script>
     <script src="{{ url_for('static', filename='js/libs/screenfull.min.js') }}"></script>