Add the grid colors to theme. (#4990)

Author: adalisk-emikhaylov

source/MRViewer/MRColorTheme.cpp

@@ -25,7 +25,7 @@
 
 #ifdef __EMSCRIPTEN__
 
-extern "C" 
+extern "C"
 {
 // 0 - dark
 // 1 - light
@@ -369,7 +369,9 @@ const char* ColorTheme::getRibbonColorTypeName( RibbonColorsType type )
         "GradBtnSecStyleActiveStart",
         "GradBtnSecStyleEnd",
         "GradBtnSecStyleHoverEnd",
-        "GradBtnSecStyleActiveEnd"
+        "GradBtnSecStyleActiveEnd",
+
+        "Grid",
     };
     return colorNames[int( type )];
 }
@@ -462,7 +464,7 @@ void ColorTheme::resetImGuiStyle()
     style.AntiAliasedLines = false;
 
     style.WindowBorderSize = 1.0f;
-    
+
     if ( auto menu = getViewerInstance().getMenuPlugin() )
     {
         auto scaling = menu->menu_scaling();

source/MRViewer/MRColorTheme.h

@@ -140,6 +140,8 @@ class ColorTheme
         GradBtnSecStyleHoverEnd,
         GradBtnSecStyleActiveEnd,
 
+        Grid,
+
         Count
     };
     // Getter and setter for ribbon colors
@@ -192,4 +194,4 @@ class ColorTheme
     ChangedSignal changedSignal_;
 };
 
-}
+}

source/MRViewer/MRDarkTheme.json

@@ -367,6 +367,12 @@
 			"b": 0,
 			"g": 171,
 			"r": 46
+		},
+		"Grid": {
+			"a": 220,
+			"b": 255,
+			"g": 255,
+			"r": 255
 		}
 	},
 	"Viewport Colors": {

source/MRViewer/MRLightTheme.json

@@ -369,6 +369,12 @@
 			"b": 0,
 			"g": 171,
 			"r": 46
+		},
+		"Grid": {
+			"a": 255,
+			"b": 0,
+			"g": 0,
+			"r": 0
 		}
 	},
 	"Viewport Colors": {