some ddcutil squeleton

Author: AKArien

src/panel/panel.cpp

@@ -177,6 +177,8 @@ class WayfirePanel::impl
             std::cerr << "Built without wireplumber support, mixer widget "
                          " is not available." << std::endl;
 #endif
+        }
+
         if (name == "light")
         {
             return Widget(new WayfireLight(output));

src/panel/widgets/light/ddcutil.cpp

@@ -1 +1,29 @@
+extern "C"{
+	#include <ddcutil_c_api.h>
+	#include <ddcutil_status_codes.h>
+}
 
+#include "light.hpp"
+
+class WfLightDdcaControl : public WfLightControl
+{
+	friend class DdcaSurveillor;
+
+	private:
+		DDCA_Display_Ref ref;
+};
+
+class DdcaSurveillor {
+	private:
+		DdcaSurveillor(){
+			ddca_enable_verify(true);
+			DDCA_Display_Info_List *display_list = NULL;
+			ddca_get_display_info_list2(false, &display_list);
+
+			for (int i = 0 ; i < display_list->ct ; i++){
+				display_refs.push_back(display_list[i]);
+			}
+		}
+
+		std::vector<DDCA_Display_Info> display_refs;
+}

src/panel/widgets/light/light.cpp

@@ -120,6 +120,9 @@ void WayfireLight::init(Gtk::Box *container){
     container->append(*button);
 
     setup_sysfs();
+    #ifdef HAVE_DDCUTIL
+    setup_ddc();
+    #endif
 
     update_icon();
 }

src/panel/widgets/light/sysfs.cpp

@@ -20,7 +20,7 @@ class WfLightSysfsControl: public WfLightControl
     // if we exist, it means we can just read/write, as the files and permissions
     // have already been checked and are being monitored with inotify
 
-    protected:
+    private:
         std::string path, connector_name;
 
         int get_max(){