mathjax: change <pre> to <p> after rendering

src/resources/markdown_template.js

@@ -1073,13 +1073,16 @@ var getHtmlWithInlineStyles = function(container) {
 };
 
 // Will be called after MathJax rendering finished.
+// Make <pre><code>math</code></pre> to <p>math</p>
 var postProcessMathJax = function() {
     var all = MathJax.Hub.getAllJax();
     for (var i = 0; i < all.length; ++i) {
         var node = all[i].SourceElement().parentNode;
         if (node.tagName.toLowerCase() == 'code') {
-            node.classList.remove('hljs');
-            node.classList.add('mathjax-code');
+            var pre = node.parentNode;
+            var p = document.createElement('p');
+            p.innerHTML = node.innerHTML;
+            pre.parentNode.replaceChild(p, pre);
         }
     }
 

src/resources/themes/v_moonlight/v_moonlight.css

@@ -103,20 +103,6 @@ pre code {
     white-space: pre;
 }
 
-code.mathjax-code {
-    display: block;
-    overflow-x: inherit;
-    margin: 0;
-    padding: 0;
-    color: inherit;
-    background: inherit;
-    font-style: normal;
-    font-weight: normal;
-    font-size: 16px;
-    font-family: inherit;
-    line-height: 24px;
-}
-
 aside {
     display: block;
     float: right;

src/resources/themes/v_pure/v_pure.css

@@ -104,21 +104,6 @@ pre code {
     white-space: pre;
 }
 
-/* Should reference the style of P. */
-code.mathjax-code {
-    display: block;
-    overflow-x: inherit;
-    margin: 0;
-    padding: 0;
-    color: inherit;
-    background: inherit;
-    font-style: normal;
-    font-weight: normal;
-    font-size: 16px;
-    font-family: inherit;
-    line-height: 24px;
-}
-
 aside {
     display: block;
     float: right;

src/resources/themes/v_white/v_white.css

@@ -103,20 +103,6 @@ pre code {
     white-space: pre;
 }
 
-code.mathjax-code {
-    display: block;
-    overflow-x: inherit;
-    margin: 0;
-    padding: 0;
-    color: inherit;
-    background: inherit;
-    font-style: normal;
-    font-weight: normal;
-    font-size: 16px;
-    font-family: inherit;
-    line-height: 24px;
-}
-
 aside {
     display: block;
     float: right;

src/vexporter.cpp

@@ -36,12 +36,14 @@ static QString marginToStrMM(qreal p_margin)
 
 void VExporter::prepareExport(const ExportOption &p_opt)
 {
+    bool isPdf = p_opt.m_format == ExportFormat::PDF
+                 || p_opt.m_format == ExportFormat::OnePDF;
+
     m_htmlTemplate = VUtils::generateHtmlTemplate(p_opt.m_renderer,
                                                   p_opt.m_renderBg,
                                                   p_opt.m_renderStyle,
                                                   p_opt.m_renderCodeBlockStyle,
-                                                  p_opt.m_format == ExportFormat::PDF
-                                                  || p_opt.m_format == ExportFormat::OnePDF);
+                                                  isPdf);
 
     m_exportHtmlTemplate = VUtils::generateExportHtmlTemplate(p_opt.m_renderBg);