using System; using System.Collections.Generic; using System.Diagnostics.Eventing.Reader; using System.Linq; using System.Reflection; using UnityEngine; using UnityEditor.Graphing; using UnityEditor.Graphing.Util; using UnityEditor.ShaderGraph.Internal; using Object = UnityEngine.Object; using UnityEditor.UIElements; using UnityEngine.UIElements; using UnityEngine.UIElements.StyleSheets; namespace UnityEditor.ShaderGraph.Drawing.Inspector { class MasterPreviewView : VisualElement { PreviewManager m_PreviewManager; GraphData m_Graph; PreviewRenderData m_PreviewRenderHandle; Image m_PreviewTextureView; public Image previewTextureView { get { return m_PreviewTextureView; } } Vector2 m_PreviewScrollPosition; ObjectField m_PreviewMeshPicker; Mesh m_PreviousMesh; bool m_RecalculateLayout; ResizeBorderFrame m_PreviewResizeBorderFrame; public ResizeBorderFrame previewResizeBorderFrame { get { return m_PreviewResizeBorderFrame; } } VisualElement m_Preview; Label m_Title; public VisualElement preview { get { return m_Preview; } } List m_DoNotShowPrimitives = new List(new string[] { PrimitiveType.Plane.ToString() }); static Type s_ContextualMenuManipulator = AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypesOrNothing()).FirstOrDefault(t => t.FullName == "UnityEngine.UIElements.ContextualMenuManipulator"); static Type s_ObjectSelector = AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypesOrNothing()).FirstOrDefault(t => t.FullName == "UnityEditor.ObjectSelector"); public string assetName { get { return m_Title.text; } set { m_Title.text = value; } } public MasterPreviewView(PreviewManager previewManager, GraphData graph) { style.overflow = Overflow.Hidden; m_PreviewManager = previewManager; m_Graph = graph; styleSheets.Add(Resources.Load("Styles/MasterPreviewView")); m_PreviewRenderHandle = previewManager.masterRenderData; if (m_PreviewRenderHandle != null) { m_PreviewRenderHandle.onPreviewChanged += OnPreviewChanged; } var topContainer = new VisualElement() { name = "top" }; { m_Title = new Label() { name = "title" }; m_Title.text = "Main Preview"; topContainer.Add(m_Title); } Add(topContainer); m_Preview = new VisualElement { name = "middle" }; { m_PreviewTextureView = CreatePreview(Texture2D.blackTexture); m_PreviewScrollPosition = new Vector2(0f, 0f); preview.Add(m_PreviewTextureView); preview.AddManipulator(new Scrollable(OnScroll)); } Add(preview); m_PreviewResizeBorderFrame = new ResizeBorderFrame(this, this) { name = "resizeBorderFrame" }; m_PreviewResizeBorderFrame.maintainAspectRatio = true; Add(m_PreviewResizeBorderFrame); m_RecalculateLayout = false; this.RegisterCallback(OnGeometryChanged); } Image CreatePreview(Texture texture) { if (m_PreviewRenderHandle?.texture != null) { texture = m_PreviewRenderHandle.texture; } var image = new Image { name = "preview", image = texture, scaleMode = ScaleMode.ScaleAndCrop }; image.AddManipulator(new Draggable(OnMouseDragPreviewMesh, true)); image.AddManipulator((IManipulator)Activator.CreateInstance(s_ContextualMenuManipulator, (Action)BuildContextualMenu)); return image; } void BuildContextualMenu(ContextualMenuPopulateEvent evt) { foreach (var primitiveTypeName in Enum.GetNames(typeof(PrimitiveType))) { if (m_DoNotShowPrimitives.Contains(primitiveTypeName)) continue; evt.menu.AppendAction(primitiveTypeName, e => ChangePrimitiveMesh(primitiveTypeName), DropdownMenuAction.AlwaysEnabled); } evt.menu.AppendAction("Sprite", e => ChangeMeshSprite(), DropdownMenuAction.AlwaysEnabled); evt.menu.AppendAction("Custom Mesh", e => ChangeMeshCustom(), DropdownMenuAction.AlwaysEnabled); } void OnPreviewChanged() { m_PreviewTextureView.image = m_PreviewRenderHandle?.texture ?? Texture2D.blackTexture; if (m_PreviewRenderHandle != null && m_PreviewRenderHandle.shaderData.isOutOfDate) m_PreviewTextureView.tintColor = new Color(1.0f, 1.0f, 1.0f, 0.3f); else m_PreviewTextureView.tintColor = Color.white; m_PreviewTextureView.MarkDirtyRepaint(); } void ChangePrimitiveMesh(string primitiveName) { Mesh changedPrimitiveMesh = Resources.GetBuiltinResource(typeof(Mesh), string.Format("{0}.fbx", primitiveName)) as Mesh; ChangeMesh(changedPrimitiveMesh); } void ChangeMesh(Mesh mesh) { Mesh changedMesh = mesh; m_PreviewManager.UpdateMasterPreview(ModificationScope.Node); if (m_Graph.previewData.serializedMesh.mesh != changedMesh) { m_Graph.previewData.rotation = Quaternion.identity; m_PreviewScrollPosition = Vector2.zero; } m_Graph.previewData.preventRotation = false; m_Graph.previewData.serializedMesh.mesh = changedMesh; } private static EditorWindow Get() { PropertyInfo P = s_ObjectSelector.GetProperty("get", BindingFlags.Public | BindingFlags.Static); return P.GetValue(null, null) as EditorWindow; } void OnMeshChanged(Object obj) { var mesh = obj as Mesh; if (mesh == null) mesh = m_PreviousMesh; ChangeMesh(mesh); } void ChangeMeshSprite() { ChangePrimitiveMesh(PrimitiveType.Quad.ToString()); m_Graph.previewData.rotation = Quaternion.identity; m_Graph.previewData.preventRotation = true; } void ChangeMeshCustom() { MethodInfo ShowMethod = s_ObjectSelector.GetMethod("Show", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly, Type.DefaultBinder, new[] { typeof(Object), typeof(Type), typeof(Object), typeof(bool), typeof(List), typeof(Action), typeof(Action), typeof(bool) }, new ParameterModifier[8]); m_PreviousMesh = m_Graph.previewData.serializedMesh.mesh; ShowMethod.Invoke(Get(), new object[] { null, typeof(Mesh), null, false, null, (Action)OnMeshChanged, (Action)OnMeshChanged, false }); } void OnGeometryChanged(GeometryChangedEvent evt) { if (m_RecalculateLayout) { WindowDockingLayout dockingLayout = new WindowDockingLayout(); dockingLayout.CalculateDockingCornerAndOffset(layout, parent.layout); dockingLayout.ClampToParentWindow(); dockingLayout.ApplyPosition(this); m_RecalculateLayout = false; } var currentWidth = m_PreviewRenderHandle?.texture != null ? m_PreviewRenderHandle.texture.width : -1; var currentHeight = m_PreviewRenderHandle?.texture != null ? m_PreviewRenderHandle.texture.height : -1; var targetWidth = Mathf.Max(1f, m_PreviewTextureView.contentRect.width); var targetHeight = Mathf.Max(1f, m_PreviewTextureView.contentRect.height); if (Mathf.Approximately(currentWidth, targetHeight) && Mathf.Approximately(currentHeight, targetWidth)) return; m_PreviewTextureView.style.width = evt.newRect.width; m_PreviewTextureView.style.height = evt.newRect.height - 40.0f; m_PreviewManager.ResizeMasterPreview(new Vector2(evt.newRect.width, evt.newRect.width)); } void OnScroll(float scrollValue) { float rescaleAmount = -scrollValue * .03f; m_Graph.previewData.scale = Mathf.Clamp(m_Graph.previewData.scale + rescaleAmount, 0.2f, 5f); m_PreviewManager.UpdateMasterPreview(ModificationScope.Node); } void OnMouseDragPreviewMesh(Vector2 deltaMouse) { if (m_Graph.previewData.preventRotation) return; Vector2 previewSize = m_PreviewTextureView.contentRect.size; m_PreviewScrollPosition -= deltaMouse * (Event.current.shift ? 3f : 1f) / Mathf.Min(previewSize.x, previewSize.y) * 140f; m_PreviewScrollPosition.y = Mathf.Clamp(m_PreviewScrollPosition.y, -90f, 90f); Quaternion previewRotation = Quaternion.Euler(m_PreviewScrollPosition.y, 0, 0) * Quaternion.Euler(0, m_PreviewScrollPosition.x, 0); m_Graph.previewData.rotation = previewRotation; m_PreviewManager.UpdateMasterPreview(ModificationScope.Node); } } }