Remove zooming in inspector preview

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/AbstractMaterialGraph.cs

 
         [NonSerialized]
         public Quaternion rotation = Quaternion.identity;
-
-        [NonSerialized]
-        public float scale = 1f;
     }
 }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Inspector/GraphInspectorView.cs

 
                 m_PreviewTextureView = new PreviewTextureView { name = "preview", image = Texture2D.blackTexture };
                 m_PreviewTextureView.AddManipulator(new Draggable(OnMouseDrag, true));
-                m_PreviewTextureView.AddManipulator(new Scrollable(OnMouseScroll));
                 bottomContainer.Add(m_PreviewTextureView);
 
                 m_PreviewScrollPosition = new Vector2(0f, 0f);
             masterNode.onModified(masterNode, ModificationScope.Node);
         }
 
-        void OnMouseScroll(float scrollDelta)
-        {
-            m_Graph.previewData.scale -= scrollDelta * .01f;
-            m_Graph.previewData.scale = Mathf.Clamp(m_Graph.previewData.scale, .1f, 4f);
-
-            masterNode.onModified(masterNode, ModificationScope.Node);
-        }
-
         void OnAddProperty()
         {
             var gm = new GenericMenu();
             if (m_Graph.previewData.serializedMesh.mesh != changedMesh)
             {
                 m_Graph.previewData.rotation = Quaternion.identity;
-                m_Graph.previewData.scale = 1f;
             }
 
             m_Graph.previewData.serializedMesh.mesh = changedMesh;

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/PreviewManager.cs

                 Graphics.Blit(Texture2D.whiteTexture, renderData.renderTexture, m_SceneResources.checkerboardMaterial);
                 var mesh = (renderData == masterRenderData && m_Graph.previewData.serializedMesh.mesh) ? m_Graph.previewData.serializedMesh.mesh :  m_SceneResources.sphere;
                 Quaternion rotation = (renderData == masterRenderData) ? m_Graph.previewData.rotation : Quaternion.identity;
-                float scale = (renderData == masterRenderData) ? m_Graph.previewData.scale : 1f;
-                    previewTransform *= Matrix4x4.Scale(Vector3.one * scale * .75f / mesh.bounds.extents.magnitude);
+                    previewTransform *= Matrix4x4.Scale(Vector3.one * 1f / mesh.bounds.extents.magnitude);
                     previewTransform *= Matrix4x4.Translate(-mesh.bounds.center);
                 }
 

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/Scrollable.cs

-using System;
-using UnityEngine.Experimental.UIElements;
-
-namespace UnityEditor.ShaderGraph.Drawing
-{
-    public class Scrollable : MouseManipulator
-    {
-        Action<float> m_Handler;
-
-        public Scrollable(Action<float> handler)
-        {
-            m_Handler = handler;
-            activators.Add(new ManipulatorActivationFilter()
-            {
-                button = MouseButton.LeftMouse
-            });
-        }
-
-        protected override void RegisterCallbacksOnTarget()
-        {
-            target.RegisterCallback(new EventCallback<WheelEvent>(OnMouseWheel), Capture.NoCapture);
-        }
-
-        protected override void UnregisterCallbacksFromTarget()
-        {
-            target.UnregisterCallback(new EventCallback<WheelEvent>(OnMouseWheel), Capture.NoCapture);
-        }
-
-        void OnMouseWheel(WheelEvent evt)
-        {
-            m_Handler(evt.delta.y);
-        }
-    }
-}

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/Scrollable.cs.meta

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