From 13988a736869dcc0889c52e4939c2fd32ee88622 Mon Sep 17 00:00:00 2001
From: Stefano Cecere <stefano.cecere@krur.com>
Date: Tue, 19 Nov 2019 19:02:07 +0100
Subject: [PATCH] [feature] add toolbar to EditorWindow with NodeGraph title
 and zoom slider

---
 Scripts/Editor/NodeEditorGUI.cs | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/Scripts/Editor/NodeEditorGUI.cs b/Scripts/Editor/NodeEditorGUI.cs
index c41afd08..1edc5917 100644
--- a/Scripts/Editor/NodeEditorGUI.cs
+++ b/Scripts/Editor/NodeEditorGUI.cs
@@ -30,6 +30,7 @@ private void OnGUI() {
             DrawNodes();
             DrawSelectionBox();
             DrawTooltip();
+            DrawToolbar();
             graphEditor.OnGUI();
 
             // Run and reset onLateGUI
@@ -85,6 +86,28 @@ public void DrawGrid(Rect rect, float zoom, Vector2 panOffset) {
             GUI.DrawTextureWithTexCoords(rect, gridTex, new Rect(tileOffset, tileAmount));
             GUI.DrawTextureWithTexCoords(rect, crossTex, new Rect(tileOffset + new Vector2(0.5f, 0.5f), tileAmount));
         }
+        
+        private void DrawToolbar() {
+            GUILayout.BeginHorizontal(EditorStyles.toolbar);
+            {
+                GUILayout.Space(2);
+                GUILayout.Label(graph.name, EditorStyles.boldLabel);
+                GUILayout.Space(10);
+
+                // Draw scale bar
+                GUILayout.Label("Scale", EditorStyles.miniLabel);
+                var newZoom = GUILayout.HorizontalSlider(
+                    zoom, 1f, 5f, GUILayout.MinWidth(40), GUILayout.MaxWidth(100)
+                );
+                GUILayout.Label(zoom.ToString("0.0#x"), EditorStyles.miniLabel, GUILayout.Width(30));
+                if (Math.Abs(newZoom - zoom) > Mathf.Epsilon) {
+                    zoom = newZoom;
+                }
+                
+                GUILayout.FlexibleSpace();
+            }
+            GUILayout.EndHorizontal();
+        }
 
         public void DrawSelectionBox() {
             if (currentActivity == NodeActivity.DragGrid) {
@@ -524,4 +547,4 @@ private void DrawTooltip() {
             }
         }
     }
-}
\ No newline at end of file
+}