Now draws markdown lines in tooltips

src/tooltips.cpp

@@ -444,12 +444,17 @@ void Tooltip::create_tags() {
     code_tag = buffer->create_tag();
     code_tag->property_family() = source_font_family;
     auto background_rgba = Gdk::RGBA();
+    auto line_rgba = Gdk::RGBA();
     auto normal_color = window->get_style_context()->get_color(Gtk::StateFlags::STATE_FLAG_NORMAL);
     auto light_theme = (normal_color.get_red() + normal_color.get_green() + normal_color.get_blue()) / 3 < 0.5;
-    if(light_theme)
+    if(light_theme) {
       background_rgba.set_rgba(1.0, 1.0, 1.0, 0.4);
-    else
+      line_rgba.set_rgba(0.0, 0.0, 0.0, 0.25);
+    }
+    else {
       background_rgba.set_rgba(0.0, 0.0, 0.0, 0.2);
+      line_rgba.set_rgba(1.0, 1.0, 1.0, 0.25);
+    }
     code_tag->property_background_rgba() = background_rgba;
 
     code_block_tag = buffer->create_tag();
@@ -464,6 +469,11 @@ void Tooltip::create_tags() {
 
     strikethrough_tag = buffer->create_tag();
     strikethrough_tag->property_strikethrough() = true;
+
+    line_tag = buffer->create_tag();
+    line_tag->property_paragraph_background_rgba() = line_rgba;
+    line_tag->property_foreground_rgba() = line_rgba;
+    line_tag->property_size() = 1;
   }
 }
 
@@ -846,7 +856,7 @@ void Tooltip::insert_markdown(const std::string &input) {
       if(i == input.size() || input[i] == '\n') {
         if(i < input.size())
           ++i;
-        buffer->insert_at_cursor("---\n");
+        buffer->insert_with_tag(buffer->get_insert()->get_iter(), "---\n", line_tag);
         if(is_empty_line())
           buffer->insert_at_cursor("\n");
         return true;

src/tooltips.hpp

@@ -56,6 +56,7 @@ private:
   Glib::RefPtr<Gtk::TextTag> bold_tag;
   Glib::RefPtr<Gtk::TextTag> italic_tag;
   Glib::RefPtr<Gtk::TextTag> strikethrough_tag;
+  Glib::RefPtr<Gtk::TextTag> line_tag;
 
   std::map<Glib::RefPtr<Gtk::TextTag>, std::string> links;
   std::map<Glib::RefPtr<Gtk::TextTag>, std::string> reference_links;