同步

Packages/dev.yarnspinner.unity/Editor/Editors/PropertyDrawers/DerivedFunctionsPropertyDrawer.cs

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+/*
+Yarn Spinner is licensed to you under the terms found in the file LICENSE.md.
+*/
+
+using UnityEditor;
+using UnityEngine;
+
+namespace Yarn.Unity.Editor
+{
+    [CustomPropertyDrawer(typeof(FunctionInfo))]
+    public class DerivedFunctionsPropertyDrawer : PropertyDrawer
+    {
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            EditorGUI.BeginProperty(position, label, property);
+
+            const float leftInset = 8;
+
+            Rect RectForFieldIndex(int index, int lineCount = 1)
+            {
+                float verticalOffset = EditorGUIUtility.singleLineHeight * index + EditorGUIUtility.standardVerticalSpacing * index;
+                float height = EditorGUIUtility.singleLineHeight * lineCount + EditorGUIUtility.standardVerticalSpacing * (lineCount - 1);
+
+                return new Rect(
+                    position.x + leftInset,
+                    position.y + verticalOffset,
+                    position.width - leftInset,
+                    height
+                );
+            }
+
+            var foldoutPosition = RectForFieldIndex(0);
+
+            SerializedProperty nameProperty = property.FindPropertyRelative("Name");
+            string name = nameProperty?.stringValue ?? "FUNCTION NAME";
+
+            property.isExpanded = EditorGUI.Foldout(foldoutPosition, property.isExpanded, name);
+
+            if (property.isExpanded)
+            {
+                EditorGUI.indentLevel += 1;
+                var typePosition = RectForFieldIndex(1);
+                var paramPosition = RectForFieldIndex(2);
+
+                SerializedProperty typeProperty = property.FindPropertyRelative("ReturnType");
+                EditorGUI.LabelField(typePosition, typeProperty?.stringValue ?? "RETURN");
+
+                SerializedProperty paramProperty = property.FindPropertyRelative("Parameters");
+                int count = paramProperty?.arraySize ?? 0;
+                if (count > 0)
+                {
+                    string[] p = new string[count];
+                    for (int i = 0; i < count; i++)
+                    {
+                        p[i] = paramProperty.GetArrayElementAtIndex(i).stringValue;
+                    }
+                    EditorGUI.LabelField(paramPosition, $"({string.Join(", ", p)})");
+                }
+                else
+                {
+                    EditorGUI.LabelField(paramPosition, $"No Parameters");
+                }
+                EditorGUI.indentLevel -= 1;
+            }
+
+            EditorGUI.EndProperty();
+        }
+
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+        {
+
+            int lines = 1;
+
+            if (property.isExpanded)
+            {
+                lines = 3;
+            }
+
+            return EditorGUIUtility.singleLineHeight * lines + EditorGUIUtility.standardVerticalSpacing * lines + 1;
+        }
+    }
+}