make article previewers support RTL too, atleast naive approach at this point

resources/skins/nudus-base/html_single_message.html

@@ -1,4 +1,4 @@
-<div class="rssguard-mwrapper" dir="auto" id="%8">
+<div class="rssguard-mwrapper" dir="%9" id="%8">
 
 <section class="rssguard-mhead">
     <div style="float: right; margin: 10px;"><!-- Should it remain here??? -->%7</div>

src/librssguard/gui/webviewers/qtextbrowser/textbrowserviewer.cpp

@@ -303,9 +303,10 @@ void TextBrowserViewer::loadMessages(const QList<Message>& messages, RootItem* r
 
   setHtml(html_messages.m_html, html_messages.m_baseUrl);
 
-  // TODO: pokračovat
+  bool is_rtl_feed = root != nullptr && root->kind() == RootItem::Kind::Feed && qobject_cast<Feed*>(root)->isRtl();
+
   QTextOption op;
-  op.setTextDirection(Qt::RightToLeft);
+  op.setTextDirection(is_rtl_feed ? Qt::LayoutDirection::RightToLeft : Qt::LayoutDirection::LeftToRight);
   document()->setDefaultTextOption(op);
 
   emit loadingFinished(true);
@@ -550,16 +551,6 @@ void TextBrowserViewer::setHtml(const QString& html, const QUrl& base_url) {
   }
 
   setVerticalScrollBarPosition(0.0);
-
-  // TODO: implement RTL for viewers somehow?
-  /*
-  auto to = document()->defaultTextOption();
-
-  to.setTextDirection(Qt::LayoutDirection::RightToLeft);
-  to.setAlignment(Qt::AlignmentFlag::AlignRight);
-
-  document()->setDefaultTextOption(to);
-  */
 }
 
 void TextBrowserViewer::setHtmlPrivate(const QString& html, const QUrl& base_url) {

src/librssguard/miscellaneous/skinfactory.cpp

@@ -231,6 +231,15 @@ PreparedHtml SkinFactory::generateHtmlOfArticles(const QList<Message>& messages,
   const auto forced_img_size =
     qApp->settings()->value(GROUP(Messages), SETTING(Messages::MessageHeadImageHeight)).toInt();
 
+  auto* feed = root != nullptr
+                 ? root->getParentServiceRoot()
+                     ->getItemFromSubTree([messages](const RootItem* it) {
+                       return it->kind() == RootItem::Kind::Feed && it->customId() == messages.at(0).m_feedId;
+                     })
+                     ->toFeed()
+                 : nullptr;
+  bool is_rtl_feed = feed != nullptr && feed->isRtl();
+
   for (const Message& message : messages) {
     QString enclosures;
     QString enclosure_images;
@@ -274,17 +283,13 @@ PreparedHtml SkinFactory::generateHtmlOfArticles(const QList<Message>& messages,
                                                      msg_date,
                                                      enclosures,
                                                      enclosure_images,
-                                                     QString::number(message.m_id)));
+                                                     QString::number(message.m_id),
+                                                     is_rtl_feed ? QSL("rtl") : QSL("ltr")));
   }
 
   QString msg_contents =
     skin.m_layoutMarkupWrapper.arg(messages.size() == 1 ? messages.at(0).m_title : tr("Newspaper view"),
                                    messages_layout);
-  auto* feed = root->getParentServiceRoot()
-                 ->getItemFromSubTree([messages](const RootItem* it) {
-                   return it->kind() == RootItem::Kind::Feed && it->customId() == messages.at(0).m_feedId;
-                 })
-                 ->toFeed();
   QString base_url;
 
   if (feed != nullptr) {