From cdb08154e2273ac6b4e2ab65dc2a6dc32d35bcde Mon Sep 17 00:00:00 2001
From: MYTNB <1046764532@qq.com>
Date: Sun, 9 Aug 2020 11:20:17 +0800
Subject: [PATCH] # add Node header tooltip

---
 Scripts/Editor/NodeEditorGUI.cs   | 14 +++++++++++++-
 Scripts/Editor/NodeGraphEditor.cs |  4 ++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/Scripts/Editor/NodeEditorGUI.cs b/Scripts/Editor/NodeEditorGUI.cs
index a14bf7d..a88e1b0 100755
--- a/Scripts/Editor/NodeEditorGUI.cs
+++ b/Scripts/Editor/NodeEditorGUI.cs
@@ -556,7 +556,9 @@ namespace XNodeEditor {
         }
 
         private void DrawTooltip() {
-            if (hoveredPort != null && NodeEditorPreferences.GetSettings().portTooltips && graphEditor != null) {
+            if (!NodeEditorPreferences.GetSettings().portTooltips && graphEditor != null)
+                return;
+            if (hoveredPort != null) {
                 string tooltip = graphEditor.GetPortTooltip(hoveredPort);
                 if (string.IsNullOrEmpty(tooltip)) return;
                 GUIContent content = new GUIContent(tooltip);
@@ -566,6 +568,16 @@ namespace XNodeEditor {
                 EditorGUI.LabelField(rect, content, NodeEditorResources.styles.tooltip);
                 Repaint();
             }
+            else if (hoveredNode != null && IsHoveringNode && IsHoveringTitle(hoveredNode)) {
+                string tooltip = graphEditor.GetNodeTooltip(hoveredNode);
+                if (string.IsNullOrEmpty(tooltip)) return;
+                GUIContent content = new GUIContent(tooltip);
+                Vector2 size = NodeEditorResources.styles.tooltip.CalcSize(content);
+                size.x += 8;
+                Rect rect = new Rect(Event.current.mousePosition - (size), size);
+                EditorGUI.LabelField(rect, content, NodeEditorResources.styles.tooltip);
+                Repaint();
+            }
         }
     }
 }
diff --git a/Scripts/Editor/NodeGraphEditor.cs b/Scripts/Editor/NodeGraphEditor.cs
index 01de70e..d2bf45c 100644
--- a/Scripts/Editor/NodeGraphEditor.cs
+++ b/Scripts/Editor/NodeGraphEditor.cs
@@ -158,6 +158,10 @@ namespace XNodeEditor {
             return tooltip;
         }
 
+        public virtual string GetNodeTooltip(XNode.Node node) {
+            return null;
+        }
+
         /// <summary> Deal with objects dropped into the graph through DragAndDrop </summary>
         public virtual void OnDropObjects(UnityEngine.Object[] objects) {
             if (GetType() != typeof(NodeGraphEditor)) Debug.Log("No OnDropObjects override defined for " + GetType());