add a few small fixes and improvements

diagrams-demo-gallery/demos/demo-custom-link2/index.tsx

@@ -3,14 +3,14 @@ import createEngine, {
 	DefaultNodeModel,
 	DefaultPortModel,
 	DefaultLinkFactory,
-	DefaultLinkPointWidget,
 	DefaultLinkModel,
 	DefaultLinkWidget
 } from '@projectstorm/react-diagrams';
-import { DiagramEngine, LinkWidget, PointModel } from '@projectstorm/react-diagrams-core';
+import {LinkWidget, PointModel} from '@projectstorm/react-diagrams-core';
 import * as React from 'react';
 import {CanvasWidget} from '@projectstorm/react-canvas-core';
 import {DemoCanvasWidget} from '../helpers/DemoCanvasWidget';
+import {MouseEvent} from "react";
 
 export class AdvancedLinkModel extends DefaultLinkModel {
 	constructor() {
@@ -47,14 +47,8 @@ const CustomLinkArrowWidget = (props) => {
 					<polygon
 						points="0,10 8,30 -8,30"
 						fill={props.color}
-						onMouseLeave={() => {
-							this.setState({ selected: false });
-						}}
-						onMouseEnter={() => {
-							this.setState({ selected: true });
-						}}
 						data-id={point.getID()}
-						data-linkid={point.getLink().getID()}></polygon>
+						data-linkid={point.getLink().getID()}/>
 				</g>
 			</g>
 		</g>
@@ -125,6 +119,7 @@ export class AdvancedLinkFactory extends DefaultLinkFactory {
 		return <AdvancedLinkWidget link={event.model} diagramEngine={this.engine}/>;
 	}
 }
+
 /**
  *
  * Simple link styling demo

packages/react-diagrams-core/src/DiagramEngine.ts

@@ -233,27 +233,32 @@ export class DiagramEngine extends CanvasEngine<CanvasEngineListener, DiagramMod
 		}
 	}
 
-	zoomToFitNodes(margin?: number) {
+	zoomToFitSelectedNodes(margin: number) {
-		let nodesRect; // nodes bounding rectangle
+		const nodes: NodeModel[] = this.model
-		let selectedNodes = this.model
 			.getSelectedEntities()
-			.filter((entity) => entity instanceof NodeModel)
+			.filter((entity) => entity instanceof NodeModel) as NodeModel[];
-			.map((node) => node) as NodeModel[];
 
-		// no node selected
+		this.zoomToFitNodes({
-		if (selectedNodes.length == 0) {
+			margin: margin,
-			let allNodes = this.model
+			nodes: nodes.length > 0 ? nodes : null
-				.getSelectionEntities()
+		});
-				.filter((entity) => entity instanceof NodeModel)
-				.map((node) => node) as NodeModel[];
-
-			// get nodes bounding box with margin
-			nodesRect = this.getBoundingNodesRect(allNodes, margin);
-		} else {
-			// get nodes bounding box with margin
-			nodesRect = this.getBoundingNodesRect(selectedNodes, margin);
 	}
 
+	zoomToFitNodes(options: { margin?: number; nodes?: NodeModel[] });
+	zoomToFitNodes(margin: number);
+	zoomToFitNodes(options) {
+		let margin = options || 0;
+		let nodes: NodeModel[] = [];
+		if (!!options && typeof options == 'object') {
+			margin = options.margin || 0;
+			nodes = options.nodes || [];
+		}
+
+		// no node selected
+		if (nodes.length === 0) {
+			nodes = this.model.getNodes();
+		}
+		const nodesRect = this.getBoundingNodesRect(nodes, margin);
 		if (nodesRect) {
 			// there is something we should zoom on
 			let canvasRect = this.canvas.getBoundingClientRect();

packages/react-diagrams-core/src/entities/link/LinkModel.ts

@@ -224,6 +224,9 @@ export class LinkModel<G extends LinkModelGenerics = LinkModelGenerics>
 		}
 		this.sourcePort = port;
 		this.fireEvent({ port }, 'sourcePortChanged');
+		if (port.reportedPosition) {
+			this.getPointForPort(port).setPosition(port.getCenter());
+		}
 	}
 
 	getSourcePort(): PortModel {
@@ -243,6 +246,9 @@ export class LinkModel<G extends LinkModelGenerics = LinkModelGenerics>
 		}
 		this.targetPort = port;
 		this.fireEvent({ port }, 'targetPortChanged');
+		if (port.reportedPosition) {
+			this.getPointForPort(port).setPosition(port.getCenter());
+		}
 	}
 
 	point(x: number, y: number, index: number = 1): PointModel {

packages/react-diagrams-core/src/entities/node/NodeWidget.tsx

@@ -37,7 +37,7 @@ export class NodeWidget extends React.Component<NodeProps> {
 		this.ob.disconnect();
 		this.ob = null;
 
-		this.listener.deregister();
+		this.listener?.deregister();
 		this.listener = null;
 	}
 
@@ -56,17 +56,26 @@ export class NodeWidget extends React.Component<NodeProps> {
 		});
 	}
 
+	updateSize(width: number, height: number) {
+		this.props.node.updateDimensions({ width, height });
+
+		//now mark the links as dirty
+		try {
+			_.forEach(this.props.node.getPorts(), (port) => {
+				port.updateCoords(this.props.diagramEngine.getPortCoords(port));
+			});
+		} catch (ex) {}
+	}
+
 	componentDidMount(): void {
 		// @ts-ignore
 		this.ob = new ResizeObserver((entities) => {
 			const bounds = entities[0].contentRect;
-			this.props.node.updateDimensions({ width: bounds.width, height: bounds.height });
+			this.updateSize(bounds.width, bounds.height);
+		});
 
-			//now mark the links as dirty
+		const b = this.ref.current.getBoundingClientRect();
-			_.forEach(this.props.node.getPorts(), (port) => {
+		this.updateSize(b.width, b.height);
-				port.updateCoords(this.props.diagramEngine.getPortCoords(port));
-			});
-		});
 		this.ob.observe(this.ref.current);
 		this.installSelectionListener();
 	}

packages/react-diagrams-core/src/entities/port/PortModel.ts

@@ -142,6 +142,10 @@ export class PortModel<G extends PortModelGenerics = PortModelGenerics> extends
 		return new Point(this.getX() + this.width / 2, this.getY() + this.height / 2);
 	}
 
+	getBoundingBox(): Rectangle {
+		return new Rectangle(this.position, this.width, this.height);
+	}
+
 	updateCoords(coords: Rectangle) {
 		this.width = coords.getWidth();
 		this.height = coords.getHeight();

packages/react-diagrams-defaults/src/link/DefaultLinkWidget.tsx

@@ -9,6 +9,8 @@ export interface DefaultLinkProps {
 	link: DefaultLinkModel;
 	diagramEngine: DiagramEngine;
 	pointAdded?: (point: PointModel, event: MouseEvent) => any;
+	renderPoints?: boolean;
+	selected?: (event: MouseEvent) => any;
 }
 
 export interface DefaultLinkState {
@@ -26,6 +28,10 @@ export class DefaultLinkWidget extends React.Component<DefaultLinkProps, Default
 		};
 	}
 
+	renderPoints() {
+		return this.props.renderPoints ?? true;
+	}
+
 	componentDidUpdate(): void {
 		this.props.link.setRenderedPaths(
 			this.refPaths.map((ref) => {
@@ -111,6 +117,7 @@ export class DefaultLinkWidget extends React.Component<DefaultLinkProps, Default
 					this.props.link.getSVGPath(),
 					{
 						onMouseDown: (event) => {
+							this.props.selected?.(event);
 							this.addPointToLink(event, 1);
 						}
 					},
@@ -132,6 +139,7 @@ export class DefaultLinkWidget extends React.Component<DefaultLinkProps, Default
 							'data-linkid': this.props.link.getID(),
 							'data-point': j,
 							onMouseDown: (event: MouseEvent) => {
+								this.props.selected?.(event);
 								this.addPointToLink(event, j + 1);
 							}
 						},
@@ -140,6 +148,7 @@ export class DefaultLinkWidget extends React.Component<DefaultLinkProps, Default
 				);
 			}
 
+			if (this.renderPoints()) {
 				//render the circles
 				for (let i = 1; i < points.length - 1; i++) {
 					paths.push(this.generatePoint(points[i]));
@@ -149,6 +158,7 @@ export class DefaultLinkWidget extends React.Component<DefaultLinkProps, Default
 					paths.push(this.generatePoint(points[points.length - 1]));
 				}
 			}
+		}
 
 		return <g data-default-link-test={this.props.link.getOptions().testName}>{paths}</g>;
 	}

packages/react-diagrams-routing/pnpm-lock.yaml

@@ -0,0 +1,47 @@
+dependencies:
+  '@projectstorm/geometry': 6.4.2
+  '@projectstorm/react-diagrams-core': 6.4.2
+  '@projectstorm/react-diagrams-defaults': 6.4.2
+lockfileVersion: 5.2
+packages:
+  /@projectstorm/geometry/6.4.2:
+    dev: false
+    resolution:
+      integrity: sha512-9h2OKHYW79tUdRzZ0InJ5unZ57AC0PR7XLF3WXlPsomXoZAVzDcwBMqbUoQmnfXHN9hE6iGQhcYUxYcvFm3DgQ==
+  /@projectstorm/react-canvas-core/6.4.2:
+    dependencies:
+      '@projectstorm/geometry': 6.4.2
+    dev: false
+    peerDependencies:
+      closest: ^0.0.1
+      lodash: 4.*
+      react: 17.*
+    resolution:
+      integrity: sha512-e0rcBM3gWQg65PGF4AiRE/J5mk0vzHjIKPfA7HBX9wCUdOxSpHL9t1CVD+UZZog6UcZzm00wNH2SSLHxzuwkvg==
+  /@projectstorm/react-diagrams-core/6.4.2:
+    dependencies:
+      '@projectstorm/geometry': 6.4.2
+      '@projectstorm/react-canvas-core': 6.4.2
+    dev: false
+    peerDependencies:
+      closest: ^0.0.1
+      lodash: 4.*
+      react: 17.*
+      resize-observer-polyfill: ^1.5.1
+    resolution:
+      integrity: sha512-zcXcxW1WMiU3AvQwI4h2+rg6irk7uNl3ZGDr5VE9wEc9kRAuhLE8VIWgjW0y3x0M8zCtC7cM6+879f8hwWa2Pg==
+  /@projectstorm/react-diagrams-defaults/6.4.2:
+    dependencies:
+      '@projectstorm/react-diagrams-core': 6.4.2
+    dev: false
+    peerDependencies:
+      '@emotion/core': ^11.*
+      '@emotion/styled': ^11.*
+      lodash: 4.*
+      react: 17.*
+    resolution:
+      integrity: sha512-O4zqfa6uG2Yd6EjWdDBcZuPgwBKUBw+jJLhmARAwAmQAbqIzSXhgvXCBac0zuLwkQSdf+i2zkk24+ENxRc29RQ==
+specifiers:
+  '@projectstorm/geometry': ^6.4.2
+  '@projectstorm/react-diagrams-core': ^6.4.2
+  '@projectstorm/react-diagrams-defaults': ^6.4.2

packages/react-diagrams-routing/src/dagre/DagreEngine.ts

@@ -22,15 +22,14 @@ export class DagreEngine {
 	redistribute(model: DiagramModel) {
 		// Create a new directed graph
 		var g = new dagre.graphlib.Graph({
-			multigraph: true
+			multigraph: true,
+			compound: true
 		});
 		g.setGraph(this.options.graph || {});
 		g.setDefaultEdgeLabel(function () {
 			return {};
 		});
 
-		const processedlinks: { [id: string]: boolean } = {};
-
 		// set nodes
 		_.forEach(model.getNodes(), (node) => {
 			g.setNode(node.getID(), { width: node.width, height: node.height });
@@ -39,7 +38,6 @@ export class DagreEngine {
 		_.forEach(model.getLinks(), (link) => {
 			// set edges
 			if (link.getSourcePort() && link.getTargetPort()) {
-				processedlinks[link.getID()] = true;
 				g.setEdge({
 					v: link.getSourcePort().getNode().getID(),
 					w: link.getTargetPort().getNode().getID(),
@@ -63,7 +61,7 @@ export class DagreEngine {
 				const link = model.getLink(e.name);
 
 				const points = [link.getFirstPoint()];
-				for (let i = 1; i < edge.points.length - 2; i++) {
+				for (let i = 1; i < edge.points.length - 1; i++) {
 					points.push(new PointModel({ link: link, position: new Point(edge.points[i].x, edge.points[i].y) }));
 				}
 				link.setPoints(points.concat(link.getLastPoint()));