custom theme multiplier support (#825)

src/singletons/Settings.hpp

@@ -66,7 +66,8 @@ public:
     BoolSetting showTitle = {"/appearance/splitheader/showTitle", false};
     BoolSetting showGame = {"/appearance/splitheader/showGame", false};
     BoolSetting showUptime = {"/appearance/splitheader/showUptime", false};
-
+    FloatSetting customThemeMultiplier = {"/appearance/customThemeMultiplier",
+                                          -0.5f};
     // BoolSetting useCustomWindowFrame = {"/appearance/useCustomWindowFrame",
     // false};
 

src/singletons/Theme.cpp

@@ -28,6 +28,9 @@ namespace detail {
         {
             return -0.8;
         }
+        else if (themeName == "Custom") {
+            return getSettings()->customThemeMultiplier.getValue();
+        }
 
         return -0.8;
     }