More bugfix to the Gtk3 RawTherapee theme, see issue #3446

rtdata/themes/RawTherapee.css

@@ -67,7 +67,7 @@ frame {
     padding: 4px;
 }
 
-frame label {
+frame > label {
     color: #D8D8D8;
 }
 
@@ -76,6 +76,19 @@ frame label {
     margin: 0px;
 }
 
+#FileCatalog {
+    background-color: #393939;
+}
+#FileCatalog:selected {
+    background-color: #565656;
+}
+
+#BeforeAfterContainer frame {
+    background-color: #262626;
+    padding: 0;
+    margin: 2px;
+}
+
 /* Frames in Preferences */
 #PrefNotebook frame {
     background-color: #3B3B3B;
@@ -84,7 +97,7 @@ frame label {
 }
 
 /* Frames in the toolbox. Not MyExpander frames. */
-eventbox .frame {
+eventbox.frame {
     border-color: #565656;
 }
 
@@ -92,12 +105,25 @@ window decoration {
 	padding: 0;
 	margin: 0;
 	box-shadow: 0 0;
+	border-radius: 0 0 0 0;
 }
 
 button  {
 	padding: 0;
 	min-height: 5px;
 	min-width: 5px;
+	background-image: linear-gradient(#343434, #2E2E2E, #292929);
+}
+button.flat  {
+	background-image: none;
+}
+button:hover  {
+	background-image: linear-gradient(#444444, #3E3E3E, #393939);
+}
+
+combobox {
+	min-height: 5px;
+	min-width: 5px;
 }
 
 box {
@@ -259,7 +285,13 @@ menuitem {
     background-color: #363636;
 }
 
-#ExpanderBox frame {
+#ExpanderBox frame,
+#ExpanderBox2 frame,
+#ExpanderBox3 frame {
+    padding: 2px 0 0 0;
+	border-style: none;
+}
+#ExpanderBox frame > border {
     background-color: #3B3B3B;
     border-style: solid;
     border-width: 1px;
@@ -269,11 +301,29 @@ menuitem {
     padding: 3px;
 }
 
+#ExpanderBox frame > label, #ExpanderBox frame frame > label,
+#ExpanderBox2 frame > label, #ExpanderBox2 frame frame > label,
+#ExpanderBox3 frame > label, #ExpanderBox3 frame frame > label {
+	margin-left: 7pt;
+	margin-top: 0;
+}
+#ExpanderBox frame > box, #ExpanderBox frame frame > box,
+#ExpanderBox2 frame > box, #ExpanderBox2 frame frame > box,
+#ExpanderBox3 frame > box, #ExpanderBox3 frame frame > box {
+	margin: 2px;
+}
+
+#ExpanderBox > box > checkbutton, #ExpanderBox > box > box,
+#ExpanderBox2 > box > checkbutton, #ExpanderBox2 > box > box,
+#ExpanderBox3 > box > checkbutton, #ExpanderBox3 > box > box {
+	margin-top: 3px;
+}
+
 #ExpanderBox frame drawingarea {
     background-color: #3B3B3B;
 }
 
-#ExpanderBox frame frame {
+#ExpanderBox frame frame > border {
     background-color: #414141;
     border: 1px solid #373737;
     border-radius: 4px;
@@ -298,7 +348,7 @@ menuitem {
     background-color: #3B3B3B;
 }
 
-#ExpanderBox2 frame {
+#ExpanderBox2 frame > border {
     background-color: #414141;
     border: 1px solid #373737;
     border-radius: 4px;
@@ -310,7 +360,7 @@ menuitem {
     background-color: #414141;
 }
 
-#ExpanderBox2 frame frame {
+#ExpanderBox2 frame frame > border {
     background-color: #474747;
     border: 1px solid #3D3D3D;
     border-radius: 4px;
@@ -455,16 +505,17 @@ paned > separator {
 
 #RightNotebook header {
     /* OK */
-    background-color: #393939;
+    background-color: #2A2A2A;
 }
 #RightNotebook tabs {
     /* OK */
-    background-color: #393939;
+    background-color: #2A2A2A;
 	padding-bottom: 5px;
 }
 #RightNotebook tab:hover {
     /* OK */
     background-color: #505050;
+    color: #D6D6D6;
 }
 #RightNotebook tab:active {
     /* OK */

rtgui/editorpanel.cc

@@ -581,11 +581,7 @@ EditorPanel::EditorPanel (FilePanel* filePanel)
 
     viewpaned->pack2 (*editbox, true, true);
 
-
-    Gtk::Frame* vbfr = Gtk::manage (new Gtk::Frame ());
-    vbfr->add (*viewpaned);
-    vbfr->set_size_request (100, 250);
-    hpanedl->pack2 (*vbfr, true, true);
+    hpanedl->pack2 (*viewpaned, true, true);
 
     hpanedr->pack1 (*hpanedl, true, false);
     hpanedr->pack2 (*vboxright, false, false);

rtgui/options.h

@@ -119,8 +119,6 @@ public:
     bool browserDirPanelOpened;
     bool editorFilmStripOpened;
     int historyPanelWidth;
-    Glib::ustring font;
-    Glib::ustring colorPickerFont;
     int windowWidth;
     int windowHeight;
     int windowX;

rtgui/retinex.cc

@@ -380,6 +380,7 @@ Retinex::Retinex () : FoldableToolPanel(this, "retinex", M("TP_RETINEX_LABEL"),
 
 
     expsettings->add(*settingsVBox);
+    expsettings->setLevel(2);
 
     neutrHBox = Gtk::manage (new Gtk::HBox ());
     neutrHBox->set_border_width (2);

rtgui/thumbbrowserbase.cc

@@ -741,7 +741,7 @@ void ThumbBrowserBase::on_style_updated ()
 ThumbBrowserBase::Internal::Internal () : ofsX(0), ofsY(0), parent(NULL), dirty(true)
 {
     Glib::RefPtr<Gtk::StyleContext> style = get_style_context();
-    set_name("Thumbnail");
+    set_name("FileCatalog");
 }
 
 void ThumbBrowserBase::Internal::setParent (ThumbBrowserBase* p)