55 lines
1.8 KiB
TypeScript
55 lines
1.8 KiB
TypeScript
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import { connectPoints } from 'diagram-js/lib/layout/ManhattanLayout';
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import Modeling from 'diagram-js/lib/features/modeling/Modeling';
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import EventBus from 'diagram-js/lib/core/EventBus';
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import { Connection } from 'diagram-js/lib/model/Types';
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export function updateWaypointsByManhattan (connection: Connection, modeling: Modeling ): void {
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if (connection.source && connection.target) {
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const x0 = connection.source.x + connection.source.width / 2;
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const x1 = connection.target.x + connection.target.width / 2;
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const y0 = connection.source.y + connection.source.height / 2;
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const y1 = connection.target.y + connection.target.height / 2;
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const x2 = (Math.abs(x0-x1) < 5) ? x0 : x1;
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const y2 = (Math.abs(y0-y1) < 5) ? y0 : y1;
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const waypoints = connectPoints(
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{ x: x0, y: y0 },
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{ x: x2, y: y2 });
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const hasChanged = JSON.stringify(connection.waypoints) != JSON.stringify(waypoints);
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if (hasChanged) {
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modeling.updateWaypoints(connection, waypoints)
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}
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}
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}
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function ManhattanLayoutPlugin(eventBus: EventBus, modeling: Modeling) {
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eventBus.on('commandStack.connection.create.executed', (event) => {
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var connection = (event as any).element;
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if (connection) {
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updateWaypointsByManhattan(connection, modeling);
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}
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});
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eventBus.on("shape.move.end", (event) => {
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var shape = (event as any).shape;
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if (shape.incoming) {
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shape.incoming.forEach((element: Connection) => {
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updateWaypointsByManhattan(element, modeling);
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});
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}
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if (shape.outgoing) {
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shape.outgoing.forEach((element: Connection) => {
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updateWaypointsByManhattan(element, modeling);
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});
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}
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});
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}
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export default {
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__init__: [ 'manhattanLayoutPlugin' ],
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manhattanLayoutPlugin: [ 'type', ManhattanLayoutPlugin ]
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};
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