Hide empty mixer sections

src/panel/widgets/mixer/mixer.cpp

@@ -286,6 +286,33 @@ void WayfireMixer::init(Gtk::Box *container)
     WpCommon::get().add_widget(this);
 }
 
+void WayfireMixer::show_hide_boxes()
+{
+    std::vector<Gtk::Box*> boxes_order     = {&sinks_box, &sources_box, &streams_box, &captures_box};
+    std::vector<Gtk::Separator*> sep_order = {&out_in_wall, &in_streams_wall, &streams_cap_wall};
+    for (auto& box : boxes_order)
+    {
+        if (box->get_children().size() > 2) // label and separator, not the prettiest tbh
+        {
+            box->show();
+        } else
+        {
+            box->hide();
+        }
+    }
+
+    for (int i = 1; i < boxes_order.size(); i++)
+    {
+        if (boxes_order[i]->get_children().size() > 2)
+        {
+            sep_order[i - 1]->show();
+        } else
+        {
+            sep_order[i - 1]->hide();
+        }
+    }
+}
+
 void WayfireMixer::update_icon()
 {
     // depends on quick_target widget

src/panel/widgets/mixer/mixer.hpp

@@ -66,6 +66,8 @@ class WayfireMixer : public WayfireWidget
 
     Gtk::Box master_box, sinks_box, sources_box, streams_box, captures_box;
 
+    void show_hide_boxes();
+
     std::map<WpPipewireObject*, std::unique_ptr<MixerControl>> objects_to_controls;
 
     /** Update the icon based on volume and muted state of the quick_target widget */

src/panel/widgets/mixer/wp-common.cpp

@@ -153,6 +153,8 @@ void WpCommon::add_object_to_widget(WpPipewireObject *object, WayfireMixer *widg
     widget->objects_to_controls.insert({object, std::unique_ptr<MixerControl>(control)});
     which_box->append((Gtk::Widget&)*control);
 
+    widget->show_hide_boxes();
+
     // we added new controls, so maybe one of them is a default
     // also initialises the quick_target for when quick_target choice is a device
     if (recheck_default)