同步

Packages/dev.yarnspinner.unity/Editor/Editors/PropertyDrawers/DialogueReferenceDrawer.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
+{
+    [CustomPropertyDrawer(typeof(DialogueReference))]
+    public class DialogueReferenceDrawer : PropertyDrawer
+    {
+
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            position = EditorGUI.PrefixLabel(position, label);
+
+            var projectProperty = property.FindPropertyRelative(nameof(DialogueReference.project));
+            var nodeNameProperty = property.FindPropertyRelative(nameof(DialogueReference.nodeName));
+
+            position = GetLineRect(position, out var projectRect);
+            position = GetLineRect(position, out var nodeNameRect);
+            EditorGUI.PropertyField(projectRect, projectProperty, GUIContent.none);
+            EditorGUI.PropertyField(nodeNameRect, nodeNameProperty, GUIContent.none);
+        }
+
+        /// <summary>
+        /// Given a rectangle, computes a rectangle of the same width as the
+        /// input with the height of a single line, taking into account vertical
+        /// spacing.
+        /// </summary>
+        /// <param name="input">A rectangle representing the total area
+        /// availalbe.</param>
+        /// <param name="lineRect">On return, a rectangle with the same width as
+        /// <paramref name="input"/> and with a single line's worth of
+        /// height.</param>
+        /// <returns>The remaining available space.</returns>
+        private Rect GetLineRect(Rect input, out Rect lineRect)
+        {
+            lineRect = input;
+            lineRect.height = EditorGUIUtility.singleLineHeight;
+
+            var remainder = input;
+            var offset = EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
+            remainder.y += offset;
+            remainder.height -= offset;
+            return remainder;
+        }
+
+        /// <summary>
+        /// Returns the height, in pixels, needed for drawing the inspector for
+        /// a <see cref="DialogueReference"/>.
+        /// </summary>
+        /// <param name="property">A serialized property representing a <see
+        /// cref="DialogueReference"/> object.</param>
+        /// <param name="label">The label to display for <paramref
+        /// name="property"/>.</param>
+        /// <returns>The displayed height for the property.</returns>
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+        {
+            const int lineCount = 2;
+            return lineCount * EditorGUIUtility.singleLineHeight +
+                (lineCount - 1) * EditorGUIUtility.standardVerticalSpacing;
+        }
+    }
+}