Move MaskBinding to drawable.d

Author: LunaTheFoxgirl

source/inochi2d/core/nodes/common.d

@@ -8,7 +8,6 @@
 */
 module inochi2d.core.nodes.composite;
 import inochi2d.core.nodes.drawable;
-import inochi2d.core.nodes.common;
 import inochi2d.core.nodes;
 import inochi2d.core.math;
 import inochi2d.core;

source/inochi2d/core/nodes/composite/package.d

@@ -187,4 +187,31 @@ public:
     void drawAsMask(float delta, DrawList drawList, MaskingMode mode) {
         drawList.setMesh(drawListSlot);
     }
+}
+
+/**
+    A binding between a mask and a mode
+*/
+struct MaskBinding {
+public:
+    GUID maskSrcGUID;
+    MaskingMode mode;
+    Drawable maskSrc;
+
+    /**
+        Serialization function
+    */
+    void onSerialize(ref JSONValue object, bool recursive = true) {
+        auto srcGuid = maskSrcGUID.toString();
+        object["source"] = srcGuid.dup;
+        object["mode"] = mode;
+    }
+
+    /**
+        Deserialization function
+    */
+    void onDeserialize(ref JSONValue object) {
+        maskSrcGUID = object.tryGetGUID("source", "source");
+        mode = object.tryGet!string("mode", null).toMaskingMode;
+    }
 }