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mirror of https://github.com/Siccity/xNode.git synced 2025-12-20 09:16:01 +08:00
xNode/Scripts/Editor/NodeEditorAction.cs
juliocp e820157fad Some useful methods for research at NodeEditorAction
Some useful methods for research.

Now with these methods and the previous commit it is now possible to play not only with the theme of xNode but also with the functionality of ports, nodes and noodles.
2020-10-07 11:16:25 -03:00

695 lines
34 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using UnityEditor;
using UnityEngine;
using XNodeEditor.Internal;
namespace XNodeEditor
{
public partial class NodeEditorWindow
{
public enum NodeActivity { Idle, HoldNode, DragNode, HoldGrid, DragGrid }
public static NodeActivity currentActivity = NodeActivity.Idle;
public static bool isPanning { get; private set; }
public static Vector2[] dragOffset;
public static XNode.Node[] copyBuffer = null;
public bool IsDraggingPort { get { return draggedOutput != null; } }
public bool IsHoveringPort { get { return hoveredPort != null; } }
public bool IsHoveringNode { get { return hoveredNode != null; } }
public bool IsHoveringReroute { get { return hoveredReroute.port != null; } }
/// <summary>
/// Return the dragged port or null if not exist
/// </summary>
public XNode.NodePort DraggedOutputPort { get { XNode.NodePort result = draggedOutput; return result; } }
/// <summary>
/// Return the Hovered port or null if not exist
/// </summary>
public XNode.NodePort HoveredPort { get { XNode.NodePort result = hoveredPort; return result; } }
/// <summary>
/// Return the Hovered node or null if not exist
/// </summary>
public XNode.Node HoveredNode { get { XNode.Node result = hoveredNode; return result; } }
private XNode.Node hoveredNode = null;
[NonSerialized] public XNode.NodePort hoveredPort = null;
[NonSerialized] private XNode.NodePort draggedOutput = null;
[NonSerialized] private XNode.NodePort draggedOutputTarget = null;
[NonSerialized] private XNode.NodePort autoConnectOutput = null;
[NonSerialized] private List<Vector2> draggedOutputReroutes = new List<Vector2>();
private RerouteReference hoveredReroute = new RerouteReference();
public List<RerouteReference> selectedReroutes = new List<RerouteReference>();
private Vector2 dragBoxStart;
private UnityEngine.Object[] preBoxSelection;
private RerouteReference[] preBoxSelectionReroute;
private Rect selectionBox;
private bool isDoubleClick = false;
private Vector2 lastMousePosition;
private float dragThreshold = 1f;
public void Controls()
{
wantsMouseMove = true;
Event e = Event.current;
switch (e.type)
{
case EventType.DragUpdated:
case EventType.DragPerform:
DragAndDrop.visualMode = DragAndDropVisualMode.Generic;
if (e.type == EventType.DragPerform)
{
DragAndDrop.AcceptDrag();
graphEditor.OnDropObjects(DragAndDrop.objectReferences);
}
break;
case EventType.MouseMove:
//Keyboard commands will not get correct mouse position from Event
lastMousePosition = e.mousePosition;
break;
case EventType.ScrollWheel:
float oldZoom = zoom;
if (e.delta.y > 0) zoom += 0.1f * zoom;
else zoom -= 0.1f * zoom;
if (NodeEditorPreferences.GetSettings().zoomToMouse) panOffset += (1 - oldZoom / zoom) * (WindowToGridPosition(e.mousePosition) + panOffset);
break;
case EventType.MouseDrag:
if (e.button == 0)
{
if (IsDraggingPort)
{
// Set target even if we can't connect, so as to prevent auto-conn menu from opening erroneously
if (IsHoveringPort && hoveredPort.IsInput && !draggedOutput.IsConnectedTo(hoveredPort))
{
draggedOutputTarget = hoveredPort;
}
else
{
draggedOutputTarget = null;
}
Repaint();
}
else if (currentActivity == NodeActivity.HoldNode)
{
RecalculateDragOffsets(e);
currentActivity = NodeActivity.DragNode;
Repaint();
}
if (currentActivity == NodeActivity.DragNode)
{
// Holding ctrl inverts grid snap
bool gridSnap = NodeEditorPreferences.GetSettings().gridSnap;
if (e.control) gridSnap = !gridSnap;
Vector2 mousePos = WindowToGridPosition(e.mousePosition);
// Move selected nodes with offset
for (int i = 0; i < Selection.objects.Length; i++)
{
if (Selection.objects[i] is XNode.Node)
{
XNode.Node node = Selection.objects[i] as XNode.Node;
Undo.RecordObject(node, "Moved Node");
Vector2 initial = node.position;
node.position = mousePos + dragOffset[i];
if (gridSnap)
{
node.position.x = (Mathf.Round((node.position.x + 8) / 16) * 16) - 8;
node.position.y = (Mathf.Round((node.position.y + 8) / 16) * 16) - 8;
}
// Offset portConnectionPoints instantly if a node is dragged so they aren't delayed by a frame.
Vector2 offset = node.position - initial;
if (offset.sqrMagnitude > 0)
{
foreach (XNode.NodePort output in node.Outputs)
{
Rect rect;
if (portConnectionPoints.TryGetValue(output, out rect))
{
rect.position += offset;
portConnectionPoints[output] = rect;
}
}
foreach (XNode.NodePort input in node.Inputs)
{
Rect rect;
if (portConnectionPoints.TryGetValue(input, out rect))
{
rect.position += offset;
portConnectionPoints[input] = rect;
}
}
}
}
}
// Move selected reroutes with offset
for (int i = 0; i < selectedReroutes.Count; i++)
{
Vector2 pos = mousePos + dragOffset[Selection.objects.Length + i];
if (gridSnap)
{
pos.x = (Mathf.Round(pos.x / 16) * 16);
pos.y = (Mathf.Round(pos.y / 16) * 16);
}
selectedReroutes[i].SetPoint(pos);
}
Repaint();
}
else if (currentActivity == NodeActivity.HoldGrid)
{
currentActivity = NodeActivity.DragGrid;
preBoxSelection = Selection.objects;
preBoxSelectionReroute = selectedReroutes.ToArray();
dragBoxStart = WindowToGridPosition(e.mousePosition);
Repaint();
}
else if (currentActivity == NodeActivity.DragGrid)
{
Vector2 boxStartPos = GridToWindowPosition(dragBoxStart);
Vector2 boxSize = e.mousePosition - boxStartPos;
if (boxSize.x < 0) { boxStartPos.x += boxSize.x; boxSize.x = Mathf.Abs(boxSize.x); }
if (boxSize.y < 0) { boxStartPos.y += boxSize.y; boxSize.y = Mathf.Abs(boxSize.y); }
selectionBox = new Rect(boxStartPos, boxSize);
Repaint();
}
}
else if (e.button == 1 || e.button == 2)
{
//check drag threshold for larger screens
if (e.delta.magnitude > dragThreshold)
{
panOffset += e.delta * zoom;
isPanning = true;
}
}
break;
case EventType.MouseDown:
Repaint();
if (e.button == 0)
{
draggedOutputReroutes.Clear();
if (IsHoveringPort)
{
if (hoveredPort.IsOutput)
{
draggedOutput = hoveredPort;
autoConnectOutput = hoveredPort;
}
else
{
hoveredPort.VerifyConnections();
autoConnectOutput = null;
if (hoveredPort.IsConnected)
{
XNode.Node node = hoveredPort.node;
XNode.NodePort output = hoveredPort.Connection;
int outputConnectionIndex = output.GetConnectionIndex(hoveredPort);
draggedOutputReroutes = output.GetReroutePoints(outputConnectionIndex);
hoveredPort.Disconnect(output);
draggedOutput = output;
draggedOutputTarget = hoveredPort;
if (NodeEditor.onUpdateNode != null) NodeEditor.onUpdateNode(node);
}
}
}
else if (IsHoveringNode && IsHoveringTitle(hoveredNode))
{
// If mousedown on node header, select or deselect
if (!Selection.Contains(hoveredNode))
{
SelectNode(hoveredNode, e.control || e.shift);
if (!e.control && !e.shift) selectedReroutes.Clear();
}
else if (e.control || e.shift) DeselectNode(hoveredNode);
// Cache double click state, but only act on it in MouseUp - Except ClickCount only works in mouseDown.
isDoubleClick = (e.clickCount == 2);
e.Use();
currentActivity = NodeActivity.HoldNode;
}
else if (IsHoveringReroute)
{
// If reroute isn't selected
if (!selectedReroutes.Contains(hoveredReroute))
{
// Add it
if (e.control || e.shift) selectedReroutes.Add(hoveredReroute);
// Select it
else
{
selectedReroutes = new List<RerouteReference>() { hoveredReroute };
Selection.activeObject = null;
}
}
// Deselect
else if (e.control || e.shift) selectedReroutes.Remove(hoveredReroute);
e.Use();
currentActivity = NodeActivity.HoldNode;
}
// If mousedown on grid background, deselect all
else if (!IsHoveringNode)
{
currentActivity = NodeActivity.HoldGrid;
if (!e.control && !e.shift)
{
selectedReroutes.Clear();
Selection.activeObject = null;
}
}
}
break;
case EventType.MouseUp:
if (e.button == 0)
{
//Port drag release
if (IsDraggingPort)
{
// If connection is valid, save it
if (draggedOutputTarget != null && draggedOutput.CanConnectTo(draggedOutputTarget))
{
XNode.Node node = draggedOutputTarget.node;
if (graph.nodes.Count != 0) draggedOutput.Connect(draggedOutputTarget);
// ConnectionIndex can be -1 if the connection is removed instantly after creation
int connectionIndex = draggedOutput.GetConnectionIndex(draggedOutputTarget);
if (connectionIndex != -1)
{
draggedOutput.GetReroutePoints(connectionIndex).AddRange(draggedOutputReroutes);
if (NodeEditor.onUpdateNode != null) NodeEditor.onUpdateNode(node);
EditorUtility.SetDirty(graph);
}
}
// Open context menu for auto-connection if there is no target node
else if (draggedOutputTarget == null && NodeEditorPreferences.GetSettings().dragToCreate && autoConnectOutput != null)
{
GenericMenu menu = new GenericMenu();
graphEditor.AddContextMenuItems(menu);
menu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
}
//Release dragged connection
draggedOutput = null;
draggedOutputTarget = null;
EditorUtility.SetDirty(graph);
if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
}
else if (currentActivity == NodeActivity.DragNode)
{
IEnumerable<XNode.Node> nodes = Selection.objects.Where(x => x is XNode.Node).Select(x => x as XNode.Node);
foreach (XNode.Node node in nodes) EditorUtility.SetDirty(node);
if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
}
else if (!IsHoveringNode)
{
// If click outside node, release field focus
if (!isPanning)
{
EditorGUI.FocusTextInControl(null);
EditorGUIUtility.editingTextField = false;
}
if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
}
// If click node header, select it.
if (currentActivity == NodeActivity.HoldNode && !(e.control || e.shift))
{
selectedReroutes.Clear();
SelectNode(hoveredNode, false);
// Double click to center node
if (isDoubleClick)
{
Vector2 nodeDimension = nodeSizes.ContainsKey(hoveredNode) ? nodeSizes[hoveredNode] / 2 : Vector2.zero;
panOffset = -hoveredNode.position - nodeDimension;
}
}
// If click reroute, select it.
if (IsHoveringReroute && !(e.control || e.shift))
{
selectedReroutes = new List<RerouteReference>() { hoveredReroute };
Selection.activeObject = null;
}
Repaint();
currentActivity = NodeActivity.Idle;
}
else if (e.button == 1 || e.button == 2)
{
if (!isPanning)
{
if (IsDraggingPort)
{
draggedOutputReroutes.Add(WindowToGridPosition(e.mousePosition));
}
else if (currentActivity == NodeActivity.DragNode && Selection.activeObject == null && selectedReroutes.Count == 1)
{
selectedReroutes[0].InsertPoint(selectedReroutes[0].GetPoint());
selectedReroutes[0] = new RerouteReference(selectedReroutes[0].port, selectedReroutes[0].connectionIndex, selectedReroutes[0].pointIndex + 1);
}
else if (IsHoveringReroute)
{
ShowRerouteContextMenu(hoveredReroute);
}
else if (IsHoveringPort)
{
ShowPortContextMenu(hoveredPort);
}
else if (IsHoveringNode && IsHoveringTitle(hoveredNode))
{
if (!Selection.Contains(hoveredNode)) SelectNode(hoveredNode, false);
autoConnectOutput = null;
GenericMenu menu = new GenericMenu();
NodeEditor.GetEditor(hoveredNode, this).AddContextMenuItems(menu);
menu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
e.Use(); // Fixes copy/paste context menu appearing in Unity 5.6.6f2 - doesn't occur in 2018.3.2f1 Probably needs to be used in other places.
}
else if (!IsHoveringNode)
{
autoConnectOutput = null;
GenericMenu menu = new GenericMenu();
graphEditor.AddContextMenuItems(menu);
menu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
}
}
isPanning = false;
}
// Reset DoubleClick
isDoubleClick = false;
break;
case EventType.KeyDown:
if (EditorGUIUtility.editingTextField) break;
else if (e.keyCode == KeyCode.F) Home();
if (NodeEditorUtilities.IsMac())
{
if (e.keyCode == KeyCode.Return) RenameSelectedNode();
}
else
{
if (e.keyCode == KeyCode.F2) RenameSelectedNode();
}
if (e.keyCode == KeyCode.A)
{
if (Selection.objects.Any(x => graph.nodes.Contains(x as XNode.Node)))
{
foreach (XNode.Node node in graph.nodes)
{
DeselectNode(node);
}
}
else
{
foreach (XNode.Node node in graph.nodes)
{
SelectNode(node, true);
}
}
Repaint();
}
break;
case EventType.ValidateCommand:
case EventType.ExecuteCommand:
if (e.commandName == "SoftDelete")
{
if (e.type == EventType.ExecuteCommand) RemoveSelectedNodes();
e.Use();
}
else if (NodeEditorUtilities.IsMac() && e.commandName == "Delete")
{
if (e.type == EventType.ExecuteCommand) RemoveSelectedNodes();
e.Use();
}
else if (e.commandName == "Duplicate")
{
if (e.type == EventType.ExecuteCommand) DuplicateSelectedNodes();
e.Use();
}
else if (e.commandName == "Copy")
{
if (e.type == EventType.ExecuteCommand) CopySelectedNodes();
e.Use();
}
else if (e.commandName == "Paste")
{
if (e.type == EventType.ExecuteCommand) PasteNodes(WindowToGridPosition(lastMousePosition));
e.Use();
}
Repaint();
break;
case EventType.Ignore:
// If release mouse outside window
if (e.rawType == EventType.MouseUp && currentActivity == NodeActivity.DragGrid)
{
Repaint();
currentActivity = NodeActivity.Idle;
}
break;
}
}
private void RecalculateDragOffsets(Event current)
{
dragOffset = new Vector2[Selection.objects.Length + selectedReroutes.Count];
// Selected nodes
for (int i = 0; i < Selection.objects.Length; i++)
{
if (Selection.objects[i] is XNode.Node)
{
XNode.Node node = Selection.objects[i] as XNode.Node;
dragOffset[i] = node.position - WindowToGridPosition(current.mousePosition);
}
}
// Selected reroutes
for (int i = 0; i < selectedReroutes.Count; i++)
{
dragOffset[Selection.objects.Length + i] = selectedReroutes[i].GetPoint() - WindowToGridPosition(current.mousePosition);
}
}
/// <summary> Puts all selected nodes in focus. If no nodes are present, resets view and zoom to to origin </summary>
public void Home()
{
var nodes = Selection.objects.Where(o => o is XNode.Node).Cast<XNode.Node>().ToList();
if (nodes.Count > 0)
{
Vector2 minPos = nodes.Select(x => x.position).Aggregate((x, y) => new Vector2(Mathf.Min(x.x, y.x), Mathf.Min(x.y, y.y)));
Vector2 maxPos = nodes.Select(x => x.position + (nodeSizes.ContainsKey(x) ? nodeSizes[x] : Vector2.zero)).Aggregate((x, y) => new Vector2(Mathf.Max(x.x, y.x), Mathf.Max(x.y, y.y)));
panOffset = -(minPos + (maxPos - minPos) / 2f);
}
else
{
zoom = 2;
panOffset = Vector2.zero;
}
}
/// <summary> Remove nodes in the graph in Selection.objects</summary>
public void RemoveSelectedNodes()
{
// We need to delete reroutes starting at the highest point index to avoid shifting indices
selectedReroutes = selectedReroutes.OrderByDescending(x => x.pointIndex).ToList();
for (int i = 0; i < selectedReroutes.Count; i++)
{
selectedReroutes[i].RemovePoint();
}
selectedReroutes.Clear();
foreach (UnityEngine.Object item in Selection.objects)
{
if (item is XNode.Node)
{
XNode.Node node = item as XNode.Node;
graphEditor.RemoveNode(node);
}
}
}
/// <summary> Initiate a rename on the currently selected node </summary>
public void RenameSelectedNode()
{
if (Selection.objects.Length == 1 && Selection.activeObject is XNode.Node)
{
XNode.Node node = Selection.activeObject as XNode.Node;
Vector2 size;
if (nodeSizes.TryGetValue(node, out size))
{
RenamePopup.Show(Selection.activeObject, size.x);
}
else
{
RenamePopup.Show(Selection.activeObject);
}
}
}
/// <summary> Draw this node on top of other nodes by placing it last in the graph.nodes list </summary>
public void MoveNodeToTop(XNode.Node node)
{
int index;
while ((index = graph.nodes.IndexOf(node)) != graph.nodes.Count - 1)
{
graph.nodes[index] = graph.nodes[index + 1];
graph.nodes[index + 1] = node;
}
}
/// <summary> Duplicate selected nodes and select the duplicates </summary>
public void DuplicateSelectedNodes()
{
// Get selected nodes which are part of this graph
XNode.Node[] selectedNodes = Selection.objects.Select(x => x as XNode.Node).Where(x => x != null && x.graph == graph).ToArray();
if (selectedNodes == null || selectedNodes.Length == 0) return;
// Get top left node position
Vector2 topLeftNode = selectedNodes.Select(x => x.position).Aggregate((x, y) => new Vector2(Mathf.Min(x.x, y.x), Mathf.Min(x.y, y.y)));
InsertDuplicateNodes(selectedNodes, topLeftNode + new Vector2(30, 30));
}
public void CopySelectedNodes()
{
copyBuffer = Selection.objects.Select(x => x as XNode.Node).Where(x => x != null && x.graph == graph).ToArray();
}
public void PasteNodes(Vector2 pos)
{
InsertDuplicateNodes(copyBuffer, pos);
}
private void InsertDuplicateNodes(XNode.Node[] nodes, Vector2 topLeft)
{
if (nodes == null || nodes.Length == 0) return;
// Get top-left node
Vector2 topLeftNode = nodes.Select(x => x.position).Aggregate((x, y) => new Vector2(Mathf.Min(x.x, y.x), Mathf.Min(x.y, y.y)));
Vector2 offset = topLeft - topLeftNode;
UnityEngine.Object[] newNodes = new UnityEngine.Object[nodes.Length];
Dictionary<XNode.Node, XNode.Node> substitutes = new Dictionary<XNode.Node, XNode.Node>();
for (int i = 0; i < nodes.Length; i++)
{
XNode.Node srcNode = nodes[i];
if (srcNode == null) continue;
// Check if user is allowed to add more of given node type
XNode.Node.DisallowMultipleNodesAttribute disallowAttrib;
Type nodeType = srcNode.GetType();
if (NodeEditorUtilities.GetAttrib(nodeType, out disallowAttrib))
{
int typeCount = graph.nodes.Count(x => x.GetType() == nodeType);
if (typeCount >= disallowAttrib.max) continue;
}
XNode.Node newNode = graphEditor.CopyNode(srcNode);
substitutes.Add(srcNode, newNode);
newNode.position = srcNode.position + offset;
newNodes[i] = newNode;
}
// Walk through the selected nodes again, recreate connections, using the new nodes
for (int i = 0; i < nodes.Length; i++)
{
XNode.Node srcNode = nodes[i];
if (srcNode == null) continue;
foreach (XNode.NodePort port in srcNode.Ports)
{
for (int c = 0; c < port.ConnectionCount; c++)
{
XNode.NodePort inputPort = port.direction == XNode.NodePort.IO.Input ? port : port.GetConnection(c);
XNode.NodePort outputPort = port.direction == XNode.NodePort.IO.Output ? port : port.GetConnection(c);
XNode.Node newNodeIn, newNodeOut;
if (substitutes.TryGetValue(inputPort.node, out newNodeIn) && substitutes.TryGetValue(outputPort.node, out newNodeOut))
{
newNodeIn.UpdatePorts();
newNodeOut.UpdatePorts();
inputPort = newNodeIn.GetInputPort(inputPort.fieldName);
outputPort = newNodeOut.GetOutputPort(outputPort.fieldName);
}
if (!inputPort.IsConnectedTo(outputPort)) inputPort.Connect(outputPort);
}
}
}
EditorUtility.SetDirty(graph);
// Select the new nodes
Selection.objects = newNodes;
}
/// <summary> Draw a connection as we are dragging it </summary>
public void DrawDraggedConnection()
{
if (IsDraggingPort)
{
Gradient gradient = graphEditor.GetNoodleGradient(draggedOutput, null);
float thickness = graphEditor.GetNoodleThickness(draggedOutput, null);
NoodlePath path = graphEditor.GetNoodlePath(draggedOutput, null);
NoodleStroke stroke = graphEditor.GetNoodleStroke(draggedOutput, null);
Rect fromRect;
if (!_portConnectionPoints.TryGetValue(draggedOutput, out fromRect)) return;
List<Vector2> gridPoints = new List<Vector2>();
gridPoints.Add(fromRect.center);
for (int i = 0; i < draggedOutputReroutes.Count; i++)
{
gridPoints.Add(draggedOutputReroutes[i]);
}
if (draggedOutputTarget != null) gridPoints.Add(portConnectionPoints[draggedOutputTarget].center);
else gridPoints.Add(WindowToGridPosition(Event.current.mousePosition));
DrawNoodle(gradient, path, stroke, thickness, gridPoints);
Color bgcol = Color.black;
Color frcol = gradient.colorKeys[0].color;
bgcol.a = 0.6f;
frcol.a = 0.6f;
// Loop through reroute points again and draw the points
for (int i = 0; i < draggedOutputReroutes.Count; i++)
{
// Draw reroute point at position
Rect rect = new Rect(draggedOutputReroutes[i], new Vector2(16, 16));
rect.position = new Vector2(rect.position.x - 8, rect.position.y - 8);
rect = GridToWindowRect(rect);
NodeEditorGUILayout.DrawPortHandle(rect, bgcol, frcol);
}
}
}
bool IsHoveringTitle(XNode.Node node)
{
Vector2 mousePos = Event.current.mousePosition;
//Get node position
Vector2 nodePos = GridToWindowPosition(node.position);
float width;
Vector2 size;
if (nodeSizes.TryGetValue(node, out size)) width = size.x;
else width = 200;
Rect windowRect = new Rect(nodePos, new Vector2(width / zoom, 30 / zoom));
return windowRect.Contains(mousePos);
}
/// <summary> Attempt to connect dragged output to target node </summary>
public void AutoConnect(XNode.Node node)
{
if (autoConnectOutput == null) return;
// Find input port of same type
XNode.NodePort inputPort = node.Ports.FirstOrDefault(x => x.IsInput && x.ValueType == autoConnectOutput.ValueType);
// Fallback to input port
if (inputPort == null) inputPort = node.Ports.FirstOrDefault(x => x.IsInput);
// Autoconnect if connection is compatible
if (inputPort != null && inputPort.CanConnectTo(autoConnectOutput)) autoConnectOutput.Connect(inputPort);
// Save changes
EditorUtility.SetDirty(graph);
if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
autoConnectOutput = null;
}
}
}