Reduce sidebar title size

This slightly increases the amount of vertical space available for content.

BUG: 462321
FIXED-IN: 23.04

part/bookmarklist.cpp

@@ -127,7 +127,7 @@ BookmarkList::BookmarkList(Okular::Document *document, QWidget *parent)
     mainlay->setSpacing(6);
 
     KTitleWidget *titleWidget = new KTitleWidget(this);
-    titleWidget->setLevel(2);
+    titleWidget->setLevel(4);
     titleWidget->setText(i18n("Bookmarks"));
     mainlay->addWidget(titleWidget);
     mainlay->setAlignment(titleWidget, Qt::AlignHCenter);

part/layers.cpp

@@ -31,7 +31,7 @@ Layers::Layers(QWidget *parent, Okular::Document *document)
     m_document->addObserver(this);
 
     KTitleWidget *titleWidget = new KTitleWidget(this);
-    titleWidget->setLevel(2);
+    titleWidget->setLevel(4);
     titleWidget->setText(i18n("Layers"));
     mainlay->addWidget(titleWidget);
     mainlay->setAlignment(titleWidget, Qt::AlignHCenter);

part/side_reviews.cpp

@@ -94,7 +94,7 @@ Reviews::Reviews(QWidget *parent, Okular::Document *document)
     vLayout->setSpacing(6);
 
     KTitleWidget *titleWidget = new KTitleWidget(this);
-    titleWidget->setLevel(2);
+    titleWidget->setLevel(4);
     titleWidget->setText(i18n("Annotations"));
 
     m_view = new TreeView(m_document, this);

part/signaturepanel.cpp

@@ -43,7 +43,7 @@ SignaturePanel::SignaturePanel(Okular::Document *document, QWidget *parent)
     Q_D(SignaturePanel);
 
     KTitleWidget *titleWidget = new KTitleWidget(this);
-    titleWidget->setLevel(2);
+    titleWidget->setLevel(4);
     titleWidget->setText(i18n("Signatures"));
 
     d->m_view = new QTreeView(this);

part/thumbnaillist.cpp

@@ -44,7 +44,7 @@ ThumbnailsBox::ThumbnailsBox(QWidget *parent)
     vbox->setSpacing(0);
 
     KTitleWidget *titleWidget = new KTitleWidget(this);
-    titleWidget->setLevel(2);
+    titleWidget->setLevel(4);
     titleWidget->setText(i18n("Thumbnails"));
     vbox->addWidget(titleWidget);
     vbox->setAlignment(titleWidget, Qt::AlignHCenter);

part/toc.cpp

@@ -34,7 +34,7 @@ TOC::TOC(QWidget *parent, Okular::Document *document)
     mainlay->setSpacing(6);
 
     KTitleWidget *titleWidget = new KTitleWidget(this);
-    titleWidget->setLevel(2);
+    titleWidget->setLevel(4);
     titleWidget->setText(i18n("Contents"));
     mainlay->addWidget(titleWidget);
     mainlay->setAlignment(titleWidget, Qt::AlignHCenter);