mirror of
https://github.com/Siccity/xNode.git
synced 2025-12-20 01:06:01 +08:00
571 lines
28 KiB
C#
571 lines
28 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEditor;
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using UnityEngine;
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namespace XNodeEditor {
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/// <summary> Contains GUI methods </summary>
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public partial class NodeEditorWindow {
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public NodeGraphEditor graphEditor;
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private List<UnityEngine.Object> selectionCache;
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private List<XNode.Node> culledNodes;
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/// <summary> 19 if docked, 22 if not </summary>
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private int topPadding { get { return isDocked() ? 19 : 22; } }
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/// <summary> 0 if docked, 3 if not </summary>
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private int leftPadding { get { return isDocked() ? 2 : 0; } }
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/// <summary> Executed after all other window GUI. Useful if Zoom is ruining your day. Automatically resets after being run.</summary>
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public event Action onLateGUI;
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public XNode.NodeGroup renamingGroup;
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public bool renamingStarted = false;
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private Matrix4x4 _prevGuiMatrix;
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private Matrix4x4 prevGuiMatrix;
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private void OnGUI() {
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Event e = Event.current;
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Matrix4x4 m = GUI.matrix;
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if (graph == null) return;
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ValidateGraphEditor();
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Controls();
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if (e.type == EventType.Layout) {
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selectionCache = new List<UnityEngine.Object>(Selection.objects);
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}
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DrawGrid(position, zoom, panOffset);
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DrawGroups();
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DrawConnections();
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DrawDraggedConnection();
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DrawNodes();
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DrawSelectionBox();
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DrawTooltip();
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DrawGraphOnGUI();
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// Run and reset onLateGUI
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if (onLateGUI != null) {
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onLateGUI();
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onLateGUI = null;
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}
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GUI.matrix = m;
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}
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public void BeginZoomed() {
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GUI.EndGroup();
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Rect position = new Rect(this.position);
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position.x = 0;
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position.y = topPadding;
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Vector2 topLeft = new Vector2(position.xMin, position.yMin - topPadding);
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Rect clippedArea = ScaleSizeBy(position, zoom, topLeft);
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GUI.BeginGroup(clippedArea);
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prevGuiMatrix = GUI.matrix;
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Matrix4x4 translation = Matrix4x4.TRS(Vector3.zero, Quaternion.identity, Vector3.one);
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Matrix4x4 scale = Matrix4x4.Scale(new Vector3(1.0f / zoom, 1.0f / zoom, 1.0f));
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GUI.matrix = translation * scale * translation.inverse * GUI.matrix;
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}
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public void EndZoomed() {
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GUI.matrix = prevGuiMatrix;
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GUI.EndGroup();
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GUI.BeginGroup(new Rect(0.0f, topPadding - (topPadding * zoom), Screen.width, Screen.height));
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}
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/// <summary> Ends the GUI Group temporarily to draw any additional elements in the NodeGraphEditor. </summary>
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private void DrawGraphOnGUI() {
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GUI.EndGroup();
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Rect rect = new Rect(new Vector2(leftPadding, topPadding), new Vector2(Screen.width, Screen.height));
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GUI.BeginGroup(rect);
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graphEditor.OnGUI();
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GUI.EndGroup();
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GUI.BeginGroup(new Rect(0.0f, topPadding - (topPadding * zoom), Screen.width, Screen.height));
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}
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public static Rect ScaleSizeBy(Rect rect, float scale, Vector2 pivotPoint) {
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Rect result = rect;
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result.x -= pivotPoint.x;
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result.y -= pivotPoint.y;
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result.xMin *= scale;
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result.xMax *= scale;
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result.yMin *= scale;
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result.yMax *= scale;
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result.x += pivotPoint.x;
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result.y += pivotPoint.y;
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return result;
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}
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public void DrawGrid(Rect rect, float zoom, Vector2 panOffset) {
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rect.position = Vector2.zero;
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Vector2 center = rect.size / 2f;
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Texture2D gridTex = graphEditor.GetGridTexture();
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Texture2D crossTex = graphEditor.GetSecondaryGridTexture();
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// Offset from origin in tile units
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float xOffset = -(center.x * zoom + panOffset.x) / gridTex.width;
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float yOffset = ((center.y - rect.size.y) * zoom + panOffset.y) / gridTex.height;
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Vector2 tileOffset = new Vector2(xOffset, yOffset);
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// Amount of tiles
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float tileAmountX = Mathf.Round(rect.size.x * zoom) / gridTex.width;
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float tileAmountY = Mathf.Round(rect.size.y * zoom) / gridTex.height;
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Vector2 tileAmount = new Vector2(tileAmountX, tileAmountY);
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// Draw tiled background
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GUI.DrawTextureWithTexCoords(rect, gridTex, new Rect(tileOffset, tileAmount));
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GUI.DrawTextureWithTexCoords(rect, crossTex, new Rect(tileOffset + new Vector2(0.5f, 0.5f), tileAmount));
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}
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public void DrawSelectionBox() {
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if (currentActivity == NodeActivity.DragGrid) {
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Vector2 curPos = WindowToGridPosition(Event.current.mousePosition);
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Vector2 size = curPos - dragBoxStart;
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Rect r = new Rect(dragBoxStart, size);
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r.position = GridToWindowPosition(r.position);
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r.size /= zoom;
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Handles.DrawSolidRectangleWithOutline(r, new Color(0, 0, 0, 0.1f), new Color(1, 1, 1, 0.6f));
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}
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}
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public static bool DropdownButton(string name, float width) {
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return GUILayout.Button(name, EditorStyles.toolbarDropDown, GUILayout.Width(width));
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}
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/// <summary> Show right-click context menu for hovered reroute </summary>
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void ShowRerouteContextMenu(RerouteReference reroute) {
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GenericMenu contextMenu = new GenericMenu();
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contextMenu.AddItem(new GUIContent("Remove"), false, () => reroute.RemovePoint());
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contextMenu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
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if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
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}
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/// <summary> Show right-click context menu for hovered port </summary>
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void ShowPortContextMenu(XNode.NodePort hoveredPort) {
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GenericMenu contextMenu = new GenericMenu();
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contextMenu.AddItem(new GUIContent("Clear Connections"), false, () => hoveredPort.ClearConnections());
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contextMenu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
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if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
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}
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/// <summary> Draw a bezier from output to input in grid coordinates </summary>
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public void DrawNoodle(Color col, List<Vector2> gridPoints) {
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Vector2[] windowPoints = gridPoints.Select(x => GridToWindowPosition(x)).ToArray();
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Handles.color = col;
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int length = gridPoints.Count;
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switch (NodeEditorPreferences.GetSettings().noodleType) {
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case NodeEditorPreferences.NoodleType.Curve:
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Vector2 outputTangent = Vector2.right;
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for (int i = 0; i < length - 1; i++) {
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Vector2 inputTangent = Vector2.left;
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if (i == 0) outputTangent = Vector2.right * Vector2.Distance(windowPoints[i], windowPoints[i + 1]) * 0.01f * zoom;
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if (i < length - 2) {
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Vector2 ab = (windowPoints[i + 1] - windowPoints[i]).normalized;
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Vector2 cb = (windowPoints[i + 1] - windowPoints[i + 2]).normalized;
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Vector2 ac = (windowPoints[i + 2] - windowPoints[i]).normalized;
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Vector2 p = (ab + cb) * 0.5f;
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float tangentLength = (Vector2.Distance(windowPoints[i], windowPoints[i + 1]) + Vector2.Distance(windowPoints[i + 1], windowPoints[i + 2])) * 0.005f * zoom;
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float side = ((ac.x * (windowPoints[i + 1].y - windowPoints[i].y)) - (ac.y * (windowPoints[i + 1].x - windowPoints[i].x)));
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p = new Vector2(-p.y, p.x) * Mathf.Sign(side) * tangentLength;
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inputTangent = p;
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} else {
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inputTangent = Vector2.left * Vector2.Distance(windowPoints[i], windowPoints[i + 1]) * 0.01f * zoom;
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}
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Handles.DrawBezier(windowPoints[i], windowPoints[i + 1], windowPoints[i] + ((outputTangent * 50) / zoom), windowPoints[i + 1] + ((inputTangent * 50) / zoom), col, null, 4);
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outputTangent = -inputTangent;
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}
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break;
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case NodeEditorPreferences.NoodleType.Line:
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for (int i = 0; i < length - 1; i++) {
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Handles.DrawAAPolyLine(5, windowPoints[i], windowPoints[i + 1]);
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}
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break;
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case NodeEditorPreferences.NoodleType.Angled:
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for (int i = 0; i < length - 1; i++) {
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if (i == length - 1) continue; // Skip last index
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if (windowPoints[i].x <= windowPoints[i + 1].x - (50 / zoom)) {
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float midpoint = (windowPoints[i].x + windowPoints[i + 1].x) * 0.5f;
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Vector2 start_1 = windowPoints[i];
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Vector2 end_1 = windowPoints[i + 1];
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start_1.x = midpoint;
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end_1.x = midpoint;
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Handles.DrawAAPolyLine(5, windowPoints[i], start_1);
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Handles.DrawAAPolyLine(5, start_1, end_1);
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Handles.DrawAAPolyLine(5, end_1, windowPoints[i + 1]);
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} else {
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float midpoint = (windowPoints[i].y + windowPoints[i + 1].y) * 0.5f;
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Vector2 start_1 = windowPoints[i];
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Vector2 end_1 = windowPoints[i + 1];
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start_1.x += 25 / zoom;
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end_1.x -= 25 / zoom;
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Vector2 start_2 = start_1;
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Vector2 end_2 = end_1;
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start_2.y = midpoint;
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end_2.y = midpoint;
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Handles.DrawAAPolyLine(5, windowPoints[i], start_1);
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Handles.DrawAAPolyLine(5, start_1, start_2);
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Handles.DrawAAPolyLine(5, start_2, end_2);
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Handles.DrawAAPolyLine(5, end_2, end_1);
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Handles.DrawAAPolyLine(5, end_1, windowPoints[i + 1]);
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}
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}
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break;
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}
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}
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/// <summary> Draws all connections </summary>
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public void DrawConnections() {
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Vector2 mousePos = Event.current.mousePosition;
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List<RerouteReference> selection = preBoxSelectionReroute != null ? new List<RerouteReference>(preBoxSelectionReroute) : new List<RerouteReference>();
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hoveredReroute = new RerouteReference();
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Color col = GUI.color;
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foreach (XNode.Node node in graph.nodes) {
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//If a null node is found, return. This can happen if the nodes associated script is deleted. It is currently not possible in Unity to delete a null asset.
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if (node == null) continue;
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// Draw full connections and output > reroute
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foreach (XNode.NodePort output in node.Outputs) {
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//Needs cleanup. Null checks are ugly
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Rect fromRect;
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if (!_portConnectionPoints.TryGetValue(output, out fromRect)) continue;
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Color connectionColor = graphEditor.GetPortColor(output);
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for (int k = 0; k < output.ConnectionCount; k++) {
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XNode.NodePort input = output.GetConnection(k);
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// Error handling
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if (input == null) continue; //If a script has been updated and the port doesn't exist, it is removed and null is returned. If this happens, return.
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if (!input.IsConnectedTo(output)) input.Connect(output);
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Rect toRect;
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if (!_portConnectionPoints.TryGetValue(input, out toRect)) continue;
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List<Vector2> reroutePoints = output.GetReroutePoints(k);
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List<Vector2> gridPoints = new List<Vector2>();
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gridPoints.Add(fromRect.center);
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gridPoints.AddRange(reroutePoints);
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gridPoints.Add(toRect.center);
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DrawNoodle(connectionColor, gridPoints);
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// Loop through reroute points again and draw the points
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for (int i = 0; i < reroutePoints.Count; i++) {
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RerouteReference rerouteRef = new RerouteReference(output, k, i);
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// Draw reroute point at position
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Rect rect = new Rect(reroutePoints[i], new Vector2(12, 12));
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rect.position = new Vector2(rect.position.x - 6, rect.position.y - 6);
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rect = GridToWindowRect(rect);
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// Draw selected reroute points with an outline
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if (selectedReroutes.Contains(rerouteRef)) {
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GUI.color = NodeEditorPreferences.GetSettings().highlightColor;
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GUI.DrawTexture(rect, NodeEditorResources.dotOuter);
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}
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GUI.color = connectionColor;
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GUI.DrawTexture(rect, NodeEditorResources.dot);
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if (rect.Overlaps(selectionBox)) selection.Add(rerouteRef);
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if (rect.Contains(mousePos)) hoveredReroute = rerouteRef;
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}
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}
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}
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}
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GUI.color = col;
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if (Event.current.type != EventType.Layout && currentActivity == NodeActivity.DragGrid) selectedReroutes = selection;
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}
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private void DrawNodes() {
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Event e = Event.current;
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BeginZoomed();
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Vector2 mousePos = Event.current.mousePosition;
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if (e.type != EventType.Layout) {
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hoveredNode = null;
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hoveredPort = null;
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}
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List<UnityEngine.Object> preSelection = preBoxSelection != null ? new List<UnityEngine.Object>(preBoxSelection) : new List<UnityEngine.Object>();
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// Selection box stuff
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Vector2 boxStartPos = GridToWindowPositionNoClipped(dragBoxStart);
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Vector2 boxSize = mousePos - boxStartPos;
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if (boxSize.x < 0) { boxStartPos.x += boxSize.x; boxSize.x = Mathf.Abs(boxSize.x); }
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if (boxSize.y < 0) { boxStartPos.y += boxSize.y; boxSize.y = Mathf.Abs(boxSize.y); }
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Rect selectionBox = new Rect(boxStartPos, boxSize);
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//Save guiColor so we can revert it
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Color guiColor = GUI.color;
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if (e.type == EventType.Layout) culledNodes = new List<XNode.Node>();
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for (int n = 0; n < graph.nodes.Count; n++) {
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// Skip null nodes. The user could be in the process of renaming scripts, so removing them at this point is not advisable.
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if (graph.nodes[n] == null) continue;
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if (n >= graph.nodes.Count) return;
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XNode.Node node = graph.nodes[n];
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// Culling
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if (e.type == EventType.Layout) {
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// Cull unselected nodes outside view
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if (!Selection.Contains(node) && ShouldBeCulled(node)) {
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culledNodes.Add(node);
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continue;
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}
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} else if (culledNodes.Contains(node)) continue;
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if (e.type == EventType.Repaint) {
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_portConnectionPoints = _portConnectionPoints.Where(x => x.Key.node != node).ToDictionary(kvp => kvp.Key, kvp => kvp.Value);
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}
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NodeEditor nodeEditor = NodeEditor.GetEditor(node, this);
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NodeEditor.portPositions.Clear();
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//Get node position
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Vector2 nodePos = GridToWindowPositionNoClipped(node.position);
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GUILayout.BeginArea(new Rect(nodePos, new Vector2(nodeEditor.GetWidth(), 4000)));
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bool selected = selectionCache.Contains(graph.nodes[n]);
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if (selected) {
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GUIStyle style = new GUIStyle(nodeEditor.GetBodyStyle());
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GUIStyle highlightStyle = new GUIStyle(NodeEditorResources.styles.nodeHighlight);
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highlightStyle.padding = style.padding;
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style.padding = new RectOffset();
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GUI.color = nodeEditor.GetTint();
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GUILayout.BeginVertical(style);
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GUI.color = NodeEditorPreferences.GetSettings().highlightColor;
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GUILayout.BeginVertical(new GUIStyle(highlightStyle));
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} else {
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GUIStyle style = new GUIStyle(nodeEditor.GetBodyStyle());
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GUI.color = nodeEditor.GetTint();
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GUILayout.BeginVertical(style);
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}
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GUI.color = guiColor;
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EditorGUI.BeginChangeCheck();
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//Draw node contents
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nodeEditor.OnHeaderGUI();
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nodeEditor.OnBodyGUI();
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//If user changed a value, notify other scripts through onUpdateNode
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if (EditorGUI.EndChangeCheck()) {
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if (NodeEditor.onUpdateNode != null) NodeEditor.onUpdateNode(node);
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EditorUtility.SetDirty(node);
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nodeEditor.serializedObject.ApplyModifiedProperties();
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}
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GUILayout.EndVertical();
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//Cache data about the node for next frame
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if (e.type == EventType.Repaint) {
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Vector2 size = GUILayoutUtility.GetLastRect().size;
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if (nodeSizes.ContainsKey(node)) nodeSizes[node] = size;
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else nodeSizes.Add(node, size);
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foreach (var kvp in NodeEditor.portPositions) {
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Vector2 portHandlePos = kvp.Value;
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portHandlePos += node.position;
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Rect rect = new Rect(portHandlePos.x - 8, portHandlePos.y - 8, 16, 16);
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portConnectionPoints[kvp.Key] = rect;
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}
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}
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if (selected) GUILayout.EndVertical();
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if (e.type != EventType.Layout) {
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//Check if we are hovering this node
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Vector2 nodeSize = GUILayoutUtility.GetLastRect().size;
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Rect windowRect = new Rect(nodePos, nodeSize);
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if (windowRect.Contains(mousePos)) hoveredNode = node;
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//If dragging a selection box, add nodes inside to selection
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if (currentActivity == NodeActivity.DragGrid) {
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if (windowRect.Overlaps(selectionBox)) preSelection.Add(node);
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}
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//Check if we are hovering any of this nodes ports
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//Check input ports
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foreach (XNode.NodePort input in node.Inputs) {
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//Check if port rect is available
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if (!portConnectionPoints.ContainsKey(input)) continue;
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Rect r = GridToWindowRectNoClipped(portConnectionPoints[input]);
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if (r.Contains(mousePos)) hoveredPort = input;
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}
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//Check all output ports
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foreach (XNode.NodePort output in node.Outputs) {
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//Check if port rect is available
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if (!portConnectionPoints.ContainsKey(output)) continue;
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Rect r = GridToWindowRectNoClipped(portConnectionPoints[output]);
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if (r.Contains(mousePos)) hoveredPort = output;
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}
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}
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GUILayout.EndArea();
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}
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if (e.type != EventType.Layout && currentActivity == NodeActivity.DragGrid) Selection.objects = preSelection.ToArray();
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EndZoomed();
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}
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private bool ShouldBeCulled(XNode.Node node) {
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Vector2 nodePos = GridToWindowPositionNoClipped(node.position);
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if (nodePos.x / _zoom > position.width) return true; // Right
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else if (nodePos.y / _zoom > position.height) return true; // Bottom
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else if (nodeSizes.ContainsKey(node)) {
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Vector2 size = nodeSizes[node];
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if (nodePos.x + size.x < 0) return true; // Left
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else if (nodePos.y + size.y < 0) return true; // Top
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}
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return false;
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}
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private void DrawTooltip() {
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if (hoveredPort != null && NodeEditorPreferences.GetSettings().portTooltips && graphEditor != null) {
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string tooltip = graphEditor.GetPortTooltip(hoveredPort);
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if (string.IsNullOrEmpty(tooltip)) return;
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GUIContent content = new GUIContent(tooltip);
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Vector2 size = NodeEditorResources.styles.tooltip.CalcSize(content);
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Rect rect = new Rect(Event.current.mousePosition - (size), size);
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EditorGUI.LabelField(rect, content, NodeEditorResources.styles.tooltip);
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Repaint();
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}
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}
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private void DrawGroups() {
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Event e = Event.current;
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BeginZoomed();
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Vector2 mousePos = Event.current.mousePosition;
|
|
|
|
if (e.type != EventType.Layout) {
|
|
hoveredGroup = null;
|
|
if (currentActivity != NodeActivity.ResizeGroup) resizingGroup = null;
|
|
}
|
|
|
|
List<UnityEngine.Object> preSelection = preBoxSelection != null ? new List<UnityEngine.Object>(preBoxSelection) : new List<UnityEngine.Object>();
|
|
|
|
Vector2 boxStartPos = GridToWindowPositionNoClipped(dragBoxStart);
|
|
Vector2 boxSize = mousePos - 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); }
|
|
Rect selectionBox = new Rect(boxStartPos, boxSize);
|
|
|
|
for (int n = 0; n < graph.groups.Count; n++) {
|
|
XNode.NodeGroup group = graph.groups[n];
|
|
if (group == null) continue;
|
|
|
|
Vector2 groupPos = GridToWindowPositionNoClipped(group.position);
|
|
GUILayout.BeginArea(new Rect(groupPos, new Vector2(group.size.x, group.size.y)));
|
|
|
|
bool selected = selectionCache.Contains(group);
|
|
|
|
if (selected) {
|
|
GUIStyle style = new GUIStyle(NodeEditorResources.styles.groupBody);
|
|
GUIStyle highlightStyle = new GUIStyle(NodeEditorResources.styles.nodeHighlight);
|
|
highlightStyle.padding = style.padding;
|
|
style.padding = new RectOffset();
|
|
GUI.color = Color.white;
|
|
GUILayout.BeginVertical(style);
|
|
GUI.color = NodeEditorPreferences.GetSettings().highlightColor;
|
|
GUILayout.BeginVertical(new GUIStyle(highlightStyle));
|
|
} else {
|
|
GUIStyle style = new GUIStyle(NodeEditorResources.styles.groupBody);
|
|
GUI.color = Color.white;
|
|
GUILayout.BeginVertical(style);
|
|
}
|
|
|
|
if (renamingGroup == group) {
|
|
if (Selection.Contains(renamingGroup)) {
|
|
int controlID = EditorGUIUtility.GetControlID(FocusType.Keyboard) + 1;
|
|
if (!renamingStarted) {
|
|
EditorGUIUtility.keyboardControl = controlID;
|
|
EditorGUIUtility.editingTextField = true;
|
|
renamingStarted = true;
|
|
}
|
|
group.name = EditorGUILayout.TextField(group.name, NodeEditorResources.styles.groupHeader, GUILayout.Height(26));
|
|
if (!EditorGUIUtility.editingTextField) {
|
|
Debug.Log("Finish renaming");
|
|
renamingGroup = null;
|
|
renamingStarted = false;
|
|
}
|
|
} else {
|
|
// Selection changed, so stop renaming.
|
|
GUILayout.Label(group.name, NodeEditorResources.styles.groupHeader, GUILayout.Height(26));
|
|
renamingGroup = null;
|
|
renamingStarted = false;
|
|
}
|
|
} else {
|
|
GUIStyle blackStyle = new GUIStyle(NodeEditorResources.styles.groupHeader);
|
|
blackStyle.normal.textColor = new Color(0.2f, 0.2f, 0.2f);
|
|
|
|
GUILayout.Label(group.name, blackStyle, GUILayout.Height(26));
|
|
|
|
Rect lastRect = GUILayoutUtility.GetLastRect();
|
|
lastRect.x -= 0.5f;
|
|
lastRect.y -= 1;
|
|
GUI.Label(lastRect, group.name, NodeEditorResources.styles.groupHeader);
|
|
}
|
|
|
|
GUILayout.FlexibleSpace();
|
|
|
|
GUILayout.EndVertical();
|
|
|
|
if (selected) GUILayout.EndVertical();
|
|
|
|
if (e.type != EventType.Layout && currentActivity != NodeActivity.ResizeGroup) {
|
|
//Check if we are hovering this node
|
|
Vector2 groupSize = GUILayoutUtility.GetLastRect().size;
|
|
Rect windowRect = new Rect(groupPos, groupSize);
|
|
|
|
float padding = 12;
|
|
|
|
// Define resize are in the bottom right corner of the NodeGroup
|
|
Rect resizeRect = new Rect(groupSize.x - padding, groupSize.y - padding, padding, padding);
|
|
EditorGUIUtility.AddCursorRect(resizeRect, MouseCursor.ResizeUpLeft);
|
|
resizeRect.position += groupPos;
|
|
|
|
if (windowRect.Contains(mousePos)) {
|
|
//If dragging a selection box, add nodes inside to selection
|
|
if (currentActivity == NodeActivity.DragGrid) {
|
|
if (windowRect.Overlaps(selectionBox)) preSelection.Add(group);
|
|
} else {
|
|
// Check if we should resize or select
|
|
bool resizeAreaClicked = false;
|
|
if (resizeRect.Contains(mousePos)) {
|
|
resizingGroup = group;
|
|
resizeAreaClicked = true;
|
|
break;
|
|
}
|
|
|
|
if (!resizeAreaClicked) hoveredGroup = group;
|
|
}
|
|
}
|
|
//If dragging a selection box, add nodes inside to selection
|
|
if (currentActivity == NodeActivity.DragGrid) {
|
|
if (windowRect.Overlaps(selectionBox)) preSelection.Add(group);
|
|
}
|
|
}
|
|
|
|
GUILayout.EndArea();
|
|
}
|
|
|
|
if (e.type != EventType.Layout && currentActivity == NodeActivity.DragGrid) Selection.objects = preSelection.ToArray();
|
|
EndZoomed();
|
|
}
|
|
}
|
|
} |