add grids panel

engine/node.h

@@ -40,6 +40,7 @@ enum class kAttribute : uint16_t
     Range = const_hash("range"),
     AspectRatio = const_hash("aspect-ratio"),
     ComboList = const_hash("combo-list"),
+    Mips = const_hash("mips"),
     Default = const_hash("default"),
     RTL = const_hash("rtl"),
 };
@@ -69,6 +70,7 @@ enum class kWidget : uint16_t
     PanelBrush = const_hash("panel-brush"),
     PanelColor = const_hash("panel-color"),
     PanelStroke = const_hash("panel-stroke"),
+    PanelGrid = const_hash("panel-grid"),
     ColorQuad = const_hash("color-quad"),
     StrokePreview = const_hash("stroke-preview"),
     Canvas = const_hash("canvas"),