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using System;
using System.Collections.Generic;
using System.Linq;
using UnityEditor.Experimental.UIElements.GraphView;
using UnityEngine;
using UnityEngine.Experimental.UIElements;
using UnityEditor.Graphing;
using UnityEditor.ShaderGraph.Drawing.Inspector;
using UnityEngine.Experimental.UIElements.StyleEnums;
using UnityEngine.Experimental.UIElements.StyleSheets;
using UnityEngine.Rendering;
using Edge = UnityEditor.Experimental.UIElements.GraphView.Edge;
using Object = UnityEngine.Object;
#if UNITY_2018_1
using GeometryChangedEvent = UnityEngine.Experimental.UIElements.PostLayoutEvent;
#endif
namespace UnityEditor.ShaderGraph.Drawing
{
[Serializable]
class FloatingWindowsLayout
{
public WindowDockingLayout previewLayout = new WindowDockingLayout();
public WindowDockingLayout blackboardLayout = new WindowDockingLayout();
public Vector2 masterPreviewSize = new Vector2(400, 400);
}
public class GraphEditorView : VisualElement, IDisposable
{
MaterialGraphView m_GraphView;
MasterPreviewView m_MasterPreviewView;
private EditorWindow m_EditorWindow;
AbstractMaterialGraph m_Graph;
PreviewManager m_PreviewManager;
SearchWindowProvider m_SearchWindowProvider;
EdgeConnectorListener m_EdgeConnectorListener;
BlackboardProvider m_BlackboardProvider;
const string k_FloatingWindowsLayoutKey = "UnityEditor.ShaderGraph.FloatingWindowsLayout";
FloatingWindowsLayout m_FloatingWindowsLayout;
public Action saveRequested { get; set; }
public Action convertToSubgraphRequested
{
get { return m_GraphView.onConvertToSubgraphClick; }
set { m_GraphView.onConvertToSubgraphClick = value; }
}
public Action showInProjectRequested { get; set; }
public MaterialGraphView graphView
{
get { return m_GraphView; }
}
PreviewManager previewManager
{
get { return m_PreviewManager; }
set { m_PreviewManager = value; }
}
public GraphEditorView(EditorWindow editorWindow, AbstractMaterialGraph graph, string assetName)
{
m_Graph = graph;
AddStyleSheetPath("Styles/GraphEditorView");
m_EditorWindow = editorWindow;
previewManager = new PreviewManager(graph);
string serializedWindowLayout = EditorUserSettings.GetConfigValue(k_FloatingWindowsLayoutKey);
if (!string.IsNullOrEmpty(serializedWindowLayout))
{
m_FloatingWindowsLayout = JsonUtility.FromJson<FloatingWindowsLayout>(serializedWindowLayout);
if (m_FloatingWindowsLayout.masterPreviewSize.x > 0f && m_FloatingWindowsLayout.masterPreviewSize.y > 0f)
previewManager.ResizeMasterPreview(m_FloatingWindowsLayout.masterPreviewSize);
}
previewManager.RenderPreviews();
var toolbar = new IMGUIContainer(() =>
{
GUILayout.BeginHorizontal(EditorStyles.toolbar);
if (GUILayout.Button("Save Asset", EditorStyles.toolbarButton))
{
if (saveRequested != null)
saveRequested();
}
GUILayout.Space(6);
if (GUILayout.Button("Show In Project", EditorStyles.toolbarButton))
{
if (showInProjectRequested != null)
showInProjectRequested();
}
GUILayout.FlexibleSpace();
GUILayout.EndHorizontal();
});
Add(toolbar);
var content = new VisualElement { name = "content" };
{
m_GraphView = new MaterialGraphView(graph) { name = "GraphView", persistenceKey = "MaterialGraphView" };
m_GraphView.SetupZoom(0.05f, ContentZoomer.DefaultMaxScale);
m_GraphView.AddManipulator(new ContentDragger());
m_GraphView.AddManipulator(new SelectionDragger());
m_GraphView.AddManipulator(new RectangleSelector());
m_GraphView.AddManipulator(new ClickSelector());
m_GraphView.AddManipulator(new GraphDropTarget(graph));
m_GraphView.RegisterCallback<KeyDownEvent>(OnSpaceDown);
content.Add(m_GraphView);
m_BlackboardProvider = new BlackboardProvider(assetName, graph);
m_GraphView.Add(m_BlackboardProvider.blackboard);
Rect blackboardLayout = m_BlackboardProvider.blackboard.layout;
blackboardLayout.x = 10f;
blackboardLayout.y = 10f;
m_BlackboardProvider.blackboard.layout = blackboardLayout;
m_MasterPreviewView = new MasterPreviewView(assetName, previewManager, graph) { name = "masterPreview" };
WindowDraggable masterPreviewViewDraggable = new WindowDraggable(null, this);
m_MasterPreviewView.AddManipulator(masterPreviewViewDraggable);
m_GraphView.Add(m_MasterPreviewView);
//m_BlackboardProvider.onDragFinished += UpdateSerializedWindowLayout;
//m_BlackboardProvider.onResizeFinished += UpdateSerializedWindowLayout;
masterPreviewViewDraggable.OnDragFinished += UpdateSerializedWindowLayout;
m_MasterPreviewView.previewResizeBorderFrame.OnResizeFinished += UpdateSerializedWindowLayout;
m_GraphView.graphViewChanged = GraphViewChanged;
RegisterCallback<GeometryChangedEvent>(ApplySerializewindowLayouts);
}
m_SearchWindowProvider = ScriptableObject.CreateInstance<SearchWindowProvider>();
m_SearchWindowProvider.Initialize(editorWindow, m_Graph, m_GraphView);
m_GraphView.nodeCreationRequest = (c) =>
{
m_SearchWindowProvider.connectedPort = null;
SearchWindow.Open(new SearchWindowContext(c.screenMousePosition), m_SearchWindowProvider);
};
m_EdgeConnectorListener = new EdgeConnectorListener(m_Graph, m_SearchWindowProvider);
foreach (var node in graph.GetNodes<INode>())
AddNode(node);
foreach (var edge in graph.edges)
AddEdge(edge);
Add(content);
}
void OnSpaceDown(KeyDownEvent evt)
{
if(evt.keyCode == KeyCode.Space && !evt.shiftKey && !evt.altKey && !evt.ctrlKey && !evt.commandKey)
{
if (graphView.nodeCreationRequest == null)
return;
Vector2 referencePosition;
referencePosition = evt.imguiEvent.mousePosition;
Vector2 screenPoint = m_EditorWindow.position.position + referencePosition;
graphView.nodeCreationRequest(new NodeCreationContext() { screenMousePosition = screenPoint });
}
else if (evt.keyCode == KeyCode.F1)
{
if (m_GraphView.selection.OfType<MaterialNodeView>().Count() == 1)
{
var nodeView = (MaterialNodeView)graphView.selection.First();
if(nodeView.node.documentationURL != null)
System.Diagnostics.Process.Start(nodeView.node.documentationURL);
}
}
}
GraphViewChange GraphViewChanged(GraphViewChange graphViewChange)
{
if (graphViewChange.edgesToCreate != null)
{
foreach (var edge in graphViewChange.edgesToCreate)
{
var leftSlot = edge.output.GetSlot();
var rightSlot = edge.input.GetSlot();
if (leftSlot != null && rightSlot != null)
{
m_Graph.owner.RegisterCompleteObjectUndo("Connect Edge");
m_Graph.Connect(leftSlot.slotReference, rightSlot.slotReference);
}
}
graphViewChange.edgesToCreate.Clear();
}
if (graphViewChange.movedElements != null)
{
foreach (var element in graphViewChange.movedElements)
{
var node = element.userData as INode;
if (node == null)
continue;
var drawState = node.drawState;
drawState.position = element.GetPosition();
node.drawState = drawState;
}
}
var nodesToUpdate = m_NodeViewHashSet;
nodesToUpdate.Clear();
if (graphViewChange.elementsToRemove != null)
{
m_Graph.owner.RegisterCompleteObjectUndo("Remove Elements");
m_Graph.RemoveElements(graphViewChange.elementsToRemove.OfType<MaterialNodeView>().Select(v => (INode) v.node),
graphViewChange.elementsToRemove.OfType<Edge>().Select(e => (IEdge) e.userData));
foreach (var edge in graphViewChange.elementsToRemove.OfType<Edge>())
{
if (edge.input != null)
{
var materialNodeView = edge.input.node as MaterialNodeView;
if (materialNodeView != null)
nodesToUpdate.Add(materialNodeView);
}
if (edge.output != null)
{
var materialNodeView = edge.output.node as MaterialNodeView;
if (materialNodeView != null)
nodesToUpdate.Add(materialNodeView);
}
}
}
foreach (var node in nodesToUpdate)
node.UpdatePortInputVisibilities();
UpdateEdgeColors(nodesToUpdate);
return graphViewChange;
}
void OnNodeChanged(INode inNode, ModificationScope scope)
{
if (m_GraphView == null)
return;
var dependentNodes = new List<INode>();
NodeUtils.CollectNodesNodeFeedsInto(dependentNodes, inNode);
foreach (var node in dependentNodes)
{
var theViews = m_GraphView.nodes.ToList().OfType<MaterialNodeView>();
var viewsFound = theViews.Where(x => x.node.guid == node.guid).ToList();
foreach (var drawableNodeData in viewsFound)
drawableNodeData.OnModified(scope);
}
}
HashSet<MaterialNodeView> m_NodeViewHashSet = new HashSet<MaterialNodeView>();
public void HandleGraphChanges()
{
previewManager.HandleGraphChanges();
previewManager.RenderPreviews();
m_BlackboardProvider.HandleGraphChanges();
foreach (var node in m_Graph.removedNodes)
{
node.UnregisterCallback(OnNodeChanged);
var nodeView = m_GraphView.nodes.ToList().OfType<MaterialNodeView>().FirstOrDefault(p => p.node != null && p.node.guid == node.guid);
if (nodeView != null)
{
nodeView.Dispose();
nodeView.userData = null;
m_GraphView.RemoveElement(nodeView);
}
}
foreach (var node in m_Graph.addedNodes)
{
AddNode(node);
}
foreach (var node in m_Graph.pastedNodes)
{
var nodeView = m_GraphView.nodes.ToList().OfType<MaterialNodeView>().FirstOrDefault(p => p.node != null && p.node.guid == node.guid);
m_GraphView.AddToSelection(nodeView);
}
var nodesToUpdate = m_NodeViewHashSet;
nodesToUpdate.Clear();
foreach (var edge in m_Graph.removedEdges)
{
var edgeView = m_GraphView.graphElements.ToList().OfType<Edge>().FirstOrDefault(p => p.userData is IEdge && Equals((IEdge)p.userData, edge));
if (edgeView != null)
{
var nodeView = edgeView.input.node as MaterialNodeView;
if (nodeView != null && nodeView.node != null)
{
nodesToUpdate.Add(nodeView);
}
edgeView.output.Disconnect(edgeView);
edgeView.input.Disconnect(edgeView);
edgeView.output = null;
edgeView.input = null;
m_GraphView.RemoveElement(edgeView);
}
}
foreach (var edge in m_Graph.addedEdges)
{
var edgeView = AddEdge(edge);
if (edgeView != null)
nodesToUpdate.Add((MaterialNodeView)edgeView.input.node);
}
foreach (var node in nodesToUpdate)
node.UpdatePortInputVisibilities();
UpdateEdgeColors(nodesToUpdate);
}
void AddNode(INode node)
{
var nodeView = new MaterialNodeView { userData = node };
m_GraphView.AddElement(nodeView);
nodeView.Initialize(node as AbstractMaterialNode, m_PreviewManager, m_EdgeConnectorListener);
node.RegisterCallback(OnNodeChanged);
nodeView.MarkDirtyRepaint();
if (m_SearchWindowProvider.nodeNeedsRepositioning && m_SearchWindowProvider.targetSlotReference.nodeGuid.Equals(node.guid))
{
m_SearchWindowProvider.nodeNeedsRepositioning = false;
foreach (var element in nodeView.inputContainer.Union(nodeView.outputContainer))
{
var port = element as ShaderPort;
if (port == null)
continue;
if (port.slot.slotReference.Equals(m_SearchWindowProvider.targetSlotReference))
{
port.RegisterCallback<GeometryChangedEvent>(RepositionNode);
return;
}
}
}
}
static void RepositionNode(GeometryChangedEvent evt)
{
var port = evt.target as ShaderPort;
if (port == null)
return;
port.UnregisterCallback<GeometryChangedEvent>(RepositionNode);
var nodeView = port.node as MaterialNodeView;
if (nodeView == null)
return;
var offset = nodeView.mainContainer.WorldToLocal(port.GetGlobalCenter() + new Vector3(3f, 3f, 0f));
var position = nodeView.GetPosition();
position.position -= offset;
nodeView.SetPosition(position);
var drawState = nodeView.node.drawState;
drawState.position = position;
nodeView.node.drawState = drawState;
nodeView.MarkDirtyRepaint();
port.MarkDirtyRepaint();
}
Edge AddEdge(IEdge edge)
{
var sourceNode = m_Graph.GetNodeFromGuid(edge.outputSlot.nodeGuid);
if (sourceNode == null)
{
Debug.LogWarning("Source node is null");
return null;
}
var sourceSlot = sourceNode.FindOutputSlot<MaterialSlot>(edge.outputSlot.slotId);
var targetNode = m_Graph.GetNodeFromGuid(edge.inputSlot.nodeGuid);
if (targetNode == null)
{
Debug.LogWarning("Target node is null");
return null;
}
var targetSlot = targetNode.FindInputSlot<MaterialSlot>(edge.inputSlot.slotId);
var sourceNodeView = m_GraphView.nodes.ToList().OfType<MaterialNodeView>().FirstOrDefault(x => x.node == sourceNode);
if (sourceNodeView != null)
{
var sourceAnchor = sourceNodeView.outputContainer.Children().OfType<ShaderPort>().FirstOrDefault(x => x.slot.Equals(sourceSlot));
var targetNodeView = m_GraphView.nodes.ToList().OfType<MaterialNodeView>().FirstOrDefault(x => x.node == targetNode);
var targetAnchor = targetNodeView.inputContainer.Children().OfType<ShaderPort>().FirstOrDefault(x => x.slot.Equals(targetSlot));
var edgeView = new Edge
{
userData = edge,
output = sourceAnchor,
input = targetAnchor
};
edgeView.output.Connect(edgeView);
edgeView.input.Connect(edgeView);
m_GraphView.AddElement(edgeView);
sourceNodeView.RefreshPorts();
targetNodeView.RefreshPorts();
sourceNodeView.UpdatePortInputTypes();
targetNodeView.UpdatePortInputTypes();
return edgeView;
}
return null;
}
Stack<MaterialNodeView> m_NodeStack = new Stack<MaterialNodeView>();
void UpdateEdgeColors(HashSet<MaterialNodeView> nodeViews)
{
var nodeStack = m_NodeStack;
nodeStack.Clear();
foreach (var nodeView in nodeViews)
nodeStack.Push(nodeView);
while (nodeStack.Any())
{
var nodeView = nodeStack.Pop();
nodeView.UpdatePortInputTypes();
foreach (var anchorView in nodeView.outputContainer.Children().OfType<Port>())
{
foreach (var edgeView in anchorView.connections.OfType<Edge>())
{
var targetSlot = edgeView.input.GetSlot();
if (targetSlot.valueType == SlotValueType.DynamicVector || targetSlot.valueType == SlotValueType.DynamicMatrix || targetSlot.valueType == SlotValueType.Dynamic)
{
var connectedNodeView = edgeView.input.node as MaterialNodeView;
if (connectedNodeView != null && !nodeViews.Contains(connectedNodeView))
{
nodeStack.Push(connectedNodeView);
nodeViews.Add(connectedNodeView);
}
}
}
}
foreach (var anchorView in nodeView.inputContainer.Children().OfType<Port>())
{
var targetSlot = anchorView.GetSlot();
if (targetSlot.valueType != SlotValueType.DynamicVector)
continue;
foreach (var edgeView in anchorView.connections.OfType<Edge>())
{
var connectedNodeView = edgeView.output.node as MaterialNodeView;
if (connectedNodeView != null && !nodeViews.Contains(connectedNodeView))
{
nodeStack.Push(connectedNodeView);
nodeViews.Add(connectedNodeView);
}
}
}
}
}
void HandleEditorViewChanged(GeometryChangedEvent evt)
{
m_BlackboardProvider.blackboard.layout = m_FloatingWindowsLayout.blackboardLayout.GetLayout(m_GraphView.layout);
}
void StoreBlackboardLayoutOnGeometryChanged(GeometryChangedEvent evt)
{
UpdateSerializedWindowLayout();
}
void ApplySerializewindowLayouts(GeometryChangedEvent evt)
{
UnregisterCallback<GeometryChangedEvent>(ApplySerializewindowLayouts);
if (m_FloatingWindowsLayout != null)
{
// Restore master preview layout
m_FloatingWindowsLayout.previewLayout.ApplyPosition(m_MasterPreviewView);
m_MasterPreviewView.previewTextureView.style.width = StyleValue<float>.Create(m_FloatingWindowsLayout.masterPreviewSize.x);
m_MasterPreviewView.previewTextureView.style.height = StyleValue<float>.Create(m_FloatingWindowsLayout.masterPreviewSize.y);
// Restore blackboard layout
m_BlackboardProvider.blackboard.layout = m_FloatingWindowsLayout.blackboardLayout.GetLayout(this.layout);
previewManager.ResizeMasterPreview(m_FloatingWindowsLayout.masterPreviewSize);
}
else
{
m_FloatingWindowsLayout = new FloatingWindowsLayout();
}
// After the layout is restored from the previous session, start tracking layout changes in the blackboard.
m_BlackboardProvider.blackboard.RegisterCallback<GeometryChangedEvent>(StoreBlackboardLayoutOnGeometryChanged);
// After the layout is restored, track changes in layout and make the blackboard have the same behavior as the preview w.r.t. docking.
RegisterCallback<GeometryChangedEvent>(HandleEditorViewChanged);
}
void UpdateSerializedWindowLayout()
{
if (m_FloatingWindowsLayout == null)
m_FloatingWindowsLayout = new FloatingWindowsLayout();
m_FloatingWindowsLayout.previewLayout.CalculateDockingCornerAndOffset(m_MasterPreviewView.layout, m_GraphView.layout);
m_FloatingWindowsLayout.previewLayout.ClampToParentWindow();
m_FloatingWindowsLayout.blackboardLayout.CalculateDockingCornerAndOffset(m_BlackboardProvider.blackboard.layout, m_GraphView.layout);
m_FloatingWindowsLayout.blackboardLayout.ClampToParentWindow();
if (m_MasterPreviewView.expanded)
{
m_FloatingWindowsLayout.masterPreviewSize = m_MasterPreviewView.previewTextureView.layout.size;
}
string serializedWindowLayout = JsonUtility.ToJson(m_FloatingWindowsLayout);
EditorUserSettings.SetConfigValue(k_FloatingWindowsLayoutKey, serializedWindowLayout);
}
public void Dispose()
{
if (m_GraphView != null)
{
saveRequested = null;
convertToSubgraphRequested = null;
showInProjectRequested = null;
foreach (var node in m_GraphView.Children().OfType<MaterialNodeView>())
node.Dispose();
m_GraphView = null;
}
if (previewManager != null)
{
previewManager.Dispose();
previewManager = null;
}
if (m_SearchWindowProvider != null)
{
Object.DestroyImmediate(m_SearchWindowProvider);
m_SearchWindowProvider = null;
}
}
}
}