mirror of
https://github.com/Siccity/xNode.git
synced 2025-12-20 09:16:01 +08:00
268 lines
14 KiB
C#
268 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEditor;
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using UnityEngine;
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namespace XNodeEditor {
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public partial class NodeEditorWindow {
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public enum NodeActivity { Idle, HoldHeader, DragHeader, HoldGrid, DragGrid }
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public static NodeActivity currentActivity = NodeActivity.Idle;
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public static bool isPanning { get; private set; }
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public static Vector2[] dragOffset;
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private bool IsDraggingPort { get { return draggedOutput != null; } }
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private bool IsHoveringPort { get { return hoveredPort != null; } }
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private bool IsHoveringNode { get { return hoveredNode != null; } }
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private XNode.Node hoveredNode = null;
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[NonSerialized] private XNode.NodePort hoveredPort = null;
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[NonSerialized] private XNode.NodePort draggedOutput = null;
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[NonSerialized] private XNode.NodePort draggedOutputTarget = null;
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private Rect nodeRects;
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private Vector2 dragBoxStart;
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private UnityEngine.Object[] preBoxSelection;
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public void Controls() {
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wantsMouseMove = true;
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Event e = Event.current;
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switch (e.type) {
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case EventType.MouseMove:
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break;
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case EventType.ScrollWheel:
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if (e.delta.y > 0) zoom += 0.1f * zoom;
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else zoom -= 0.1f * zoom;
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break;
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case EventType.MouseDrag:
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if (e.button == 0) {
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if (IsDraggingPort) {
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if (IsHoveringPort && hoveredPort.IsInput) {
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if (!draggedOutput.IsConnectedTo(hoveredPort)) {
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draggedOutputTarget = hoveredPort;
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}
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} else {
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draggedOutputTarget = null;
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}
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Repaint();
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} else if (currentActivity == NodeActivity.HoldHeader || currentActivity == NodeActivity.DragHeader) {
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for (int i = 0; i < Selection.objects.Length; i++) {
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if (Selection.objects[i] is XNode.Node) {
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XNode.Node node = Selection.objects[i] as XNode.Node;
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node.position = WindowToGridPosition(e.mousePosition) + dragOffset[i];
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bool gridSnap = NodeEditorPreferences.GetSettings().gridSnap;
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if (e.control) {
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gridSnap = !gridSnap;
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}
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if (gridSnap) {
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node.position.x = (Mathf.Round((node.position.x + 8) / 16) * 16) - 8;
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node.position.y = (Mathf.Round((node.position.y + 8) / 16) * 16) - 8;
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}
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}
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}
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currentActivity = NodeActivity.DragHeader;
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Repaint();
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} else if (currentActivity == NodeActivity.HoldGrid) {
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currentActivity = NodeActivity.DragGrid;
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preBoxSelection = Selection.objects;
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dragBoxStart = WindowToGridPosition(e.mousePosition);
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Repaint();
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} else if (currentActivity == NodeActivity.DragGrid) {
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foreach (XNode.Node node in graph.nodes) {
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}
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Repaint();
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}
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} else if (e.button == 1 || e.button == 2) {
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Vector2 tempOffset = panOffset;
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tempOffset += e.delta * zoom;
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// Round value to increase crispyness of UI text
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tempOffset.x = Mathf.Round(tempOffset.x);
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tempOffset.y = Mathf.Round(tempOffset.y);
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panOffset = tempOffset;
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isPanning = true;
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}
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break;
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case EventType.MouseDown:
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Repaint();
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if (e.button == 0) {
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if (IsHoveringPort) {
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if (hoveredPort.IsOutput) {
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draggedOutput = hoveredPort;
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} else {
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hoveredPort.VerifyConnections();
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if (hoveredPort.IsConnected) {
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XNode.Node node = hoveredPort.node;
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XNode.NodePort output = hoveredPort.Connection;
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hoveredPort.Disconnect(output);
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draggedOutput = output;
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draggedOutputTarget = hoveredPort;
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if (NodeEditor.onUpdateNode != null) NodeEditor.onUpdateNode(node);
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}
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}
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} else if (IsHoveringNode && IsHoveringTitle(hoveredNode)) {
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// If mousedown on node header, select or deselect
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if (!Selection.Contains(hoveredNode)) SelectNode(hoveredNode, e.control || e.shift);
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else if (e.control || e.shift) DeselectNode(hoveredNode);
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e.Use();
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currentActivity = NodeActivity.HoldHeader;
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dragOffset = new Vector2[Selection.objects.Length];
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for (int i = 0; i < dragOffset.Length; i++) {
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if (Selection.objects[i] is XNode.Node) {
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XNode.Node node = Selection.objects[i] as XNode.Node;
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dragOffset[i] = node.position - WindowToGridPosition(e.mousePosition);
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}
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}
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}
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// If mousedown on grid background, deselect all
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else if (!IsHoveringNode) {
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currentActivity = NodeActivity.HoldGrid;
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if (!e.control && !e.shift) Selection.activeObject = null;
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}
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}
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break;
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case EventType.MouseUp:
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if (e.button == 0) {
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//Port drag release
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if (IsDraggingPort) {
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//If connection is valid, save it
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if (draggedOutputTarget != null) {
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XNode.Node node = draggedOutputTarget.node;
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if (graph.nodes.Count != 0) draggedOutput.Connect(draggedOutputTarget);
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if (NodeEditor.onUpdateNode != null) NodeEditor.onUpdateNode(node);
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EditorUtility.SetDirty(graph);
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}
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//Release dragged connection
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draggedOutput = null;
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draggedOutputTarget = null;
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EditorUtility.SetDirty(graph);
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AssetDatabase.SaveAssets();
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} else if (currentActivity == NodeActivity.DragHeader) {
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AssetDatabase.SaveAssets();
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} else if (!IsHoveringNode) {
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// If click outside node, release field focus
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if (!isPanning) {
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GUIUtility.hotControl = 0;
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GUIUtility.keyboardControl = 0;
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}
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AssetDatabase.SaveAssets();
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}
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// If click node header, select single node.
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if (currentActivity == NodeActivity.HoldHeader && !(e.control || e.shift)) {
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SelectNode(hoveredNode, false);
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}
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Repaint();
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currentActivity = NodeActivity.Idle;
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} else if (e.button == 1) {
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if (!isPanning) {
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if (IsHoveringNode && IsHoveringTitle(hoveredNode)) {
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if (!Selection.Contains(hoveredNode)) SelectNode(hoveredNode, false);
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ShowNodeContextMenu();
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} else if (!IsHoveringNode) {
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ShowGraphContextMenu();
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}
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}
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isPanning = false;
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}
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break;
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case EventType.ValidateCommand:
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if (e.commandName == "SoftDelete") RemoveSelectedNodes();
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else if (e.commandName == "Duplicate") DublicateSelectedNodes();
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Repaint();
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break;
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case EventType.Ignore:
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// If release mouse outside window
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if (e.rawType == EventType.MouseUp && currentActivity == NodeActivity.DragGrid) {
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Repaint();
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currentActivity = NodeActivity.Idle;
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}
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break;
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}
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}
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/// <summary> Puts all nodes in focus. If no nodes are present, resets view to </summary>
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public void Home() {
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zoom = 2;
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panOffset = Vector2.zero;
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}
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public void CreateNode(Type type, Vector2 position) {
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XNode.Node node = graph.AddNode(type);
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node.position = position;
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Repaint();
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}
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/// <summary> Remove nodes in the graph in Selection.objects</summary>
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public void RemoveSelectedNodes() {
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foreach (UnityEngine.Object item in Selection.objects) {
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if (item is XNode.Node) {
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XNode.Node node = item as XNode.Node;
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graph.RemoveNode(node);
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}
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}
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}
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/// <summary> Dublicate selected nodes and select the dublicates </summary>
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public void DublicateSelectedNodes() {
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UnityEngine.Object[] newNodes = new UnityEngine.Object[Selection.objects.Length];
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Dictionary<XNode.Node, XNode.Node> substitutes = new Dictionary<XNode.Node, XNode.Node>();
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for (int i = 0; i < Selection.objects.Length; i++) {
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if (Selection.objects[i] is XNode.Node) {
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XNode.Node srcNode = Selection.objects[i] as XNode.Node;
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if (srcNode.graph != graph) continue; // ignore nodes selected in another graph
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XNode.Node newNode = graph.CopyNode(srcNode);
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substitutes.Add(srcNode, newNode);
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newNode.position = srcNode.position + new Vector2(30, 30);
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newNodes[i] = newNode;
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}
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}
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// Walk through the selected nodes again, recreate connections, using the new nodes
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for (int i = 0; i < Selection.objects.Length; i++) {
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if (Selection.objects[i] is XNode.Node) {
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XNode.Node srcNode = Selection.objects[i] as XNode.Node;
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if (srcNode.graph != graph) continue; // ignore nodes selected in another graph
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foreach (XNode.NodePort port in srcNode.Ports) {
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for (int c = 0; c < port.ConnectionCount; c++) {
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XNode.NodePort inputPort = port.direction == XNode.NodePort.IO.Input ? port : port.GetConnection(c);
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XNode.NodePort outputPort = port.direction == XNode.NodePort.IO.Output ? port : port.GetConnection(c);
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if (substitutes.ContainsKey(inputPort.node) && substitutes.ContainsKey(outputPort.node)) {
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XNode.Node newNodeIn = substitutes[inputPort.node];
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XNode.Node newNodeOut = substitutes[outputPort.node];
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newNodeIn.UpdateStaticPorts();
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newNodeOut.UpdateStaticPorts();
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inputPort = newNodeIn.GetInputPort(inputPort.fieldName);
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outputPort = newNodeOut.GetOutputPort(outputPort.fieldName);
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}
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if (!inputPort.IsConnectedTo(outputPort)) inputPort.Connect(outputPort);
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}
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}
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}
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}
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Selection.objects = newNodes;
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}
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/// <summary> Draw a connection as we are dragging it </summary>
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public void DrawDraggedConnection() {
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if (IsDraggingPort) {
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if (!_portConnectionPoints.ContainsKey(draggedOutput)) return;
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Vector2 from = _portConnectionPoints[draggedOutput].center;
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Vector2 to = draggedOutputTarget != null ? portConnectionPoints[draggedOutputTarget].center : WindowToGridPosition(Event.current.mousePosition);
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Color col = NodeEditorPreferences.GetTypeColor(draggedOutput.ValueType);
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col.a = 0.6f;
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DrawConnection(from, to, col);
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}
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}
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bool IsHoveringTitle(XNode.Node node) {
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Vector2 mousePos = Event.current.mousePosition;
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//Get node position
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Vector2 nodePos = GridToWindowPosition(node.position);
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float width = 200;
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if (nodeWidths.ContainsKey(node)) width = nodeWidths[node];
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Rect windowRect = new Rect(nodePos, new Vector2(width / zoom, 30 / zoom));
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return windowRect.Contains(mousePos);
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}
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}
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} |