Examples with ElkEdge org.eclipse.elk.graph.ElkEdge used on opensource projects

Example 1 with ElkEdge

use of org.eclipse.elk.graph.ElkEdge in project sirius-components by eclipse-sirius.

the class DiagramConverterTests method testDiagramOneEdgeBetweenTwoBorderNodes.

@Test
public void testDiagramOneEdgeBetweenTwoBorderNodes() {
    ImageSizeProvider imageSizeProvider = new ImageSizeProvider();
    ELKDiagramConverter diagramConverter = new ELKDiagramConverter(this.textBoundsService, imageSizeProvider);
    // @formatter:off
    TestDiagramBuilder diagramBuilder = new TestDiagramBuilder();
    Node firstBorderNode = Node.newNode(diagramBuilder.getNode(FIRST_NODE_ID)).style(diagramBuilder.getRectangularNodeStyle()).build();
    Node secondBorderNode = Node.newNode(diagramBuilder.getNode(SECOND_NODE_ID)).style(diagramBuilder.getRectangularNodeStyle()).build();
    Node node = Node.newNode(diagramBuilder.getNode(THIRD_NODE_ID)).style(diagramBuilder.getImageNodeStyle()).borderNodes(List.of(firstBorderNode, secondBorderNode)).build();
    Edge edge = Edge.newEdge(diagramBuilder.getEdge(FIRST_EDGE_ID, firstBorderNode.getId(), secondBorderNode.getId())).build();
    Diagram diagram = Diagram.newDiagram(diagramBuilder.getDiagram(DIAGRAM_ID)).nodes(List.of(node)).edges(List.of(edge)).build();
    // @formatter:on
    ELKConvertedDiagram convertedDiagram = diagramConverter.convert(diagram);
    ElkNode elkDiagram = convertedDiagram.getElkDiagram();
    assertThat(elkDiagram.getChildren().size()).isEqualTo(1);
    assertThat(elkDiagram.getChildren().get(0)).isInstanceOf(ElkNode.class);
    assertThat(elkDiagram.getContainedEdges().size()).isEqualTo(1);
    assertThat(elkDiagram.getContainedEdges().get(0)).isInstanceOf(ElkEdge.class);
    ElkEdge elkEdge = elkDiagram.getContainedEdges().get(0);
    assertThat(elkEdge.getSources().size()).isEqualTo(1);
    assertThat(elkEdge.getSources().get(0).getIdentifier()).isEqualTo(firstBorderNode.getId().toString());
    assertThat(elkEdge.getTargets().size()).isEqualTo(1);
    assertThat(elkEdge.getTargets().get(0).getIdentifier()).isEqualTo(secondBorderNode.getId().toString());
    imageSizeProvider.dispose();
}

Example 2 with ElkEdge

use of org.eclipse.elk.graph.ElkEdge in project sirius-components by eclipse-sirius.

the class DiagramConverterTests method testDiagramOneNodeAndOneEdge.

@Test
public void testDiagramOneNodeAndOneEdge() {
    ImageSizeProvider imageSizeProvider = new ImageSizeProvider();
    ELKDiagramConverter diagramConverter = new ELKDiagramConverter(this.textBoundsService, imageSizeProvider);
    // @formatter:off
    TestDiagramBuilder diagramBuilder = new TestDiagramBuilder();
    Node node = Node.newNode(diagramBuilder.getNode(FIRST_NODE_ID)).style(diagramBuilder.getImageNodeStyle()).build();
    Edge edge = Edge.newEdge(diagramBuilder.getEdge(FIRST_EDGE_ID, node.getId(), node.getId())).build();
    Diagram diagram = Diagram.newDiagram(diagramBuilder.getDiagram(DIAGRAM_ID)).nodes(List.of(node)).edges(List.of(edge)).build();
    // @formatter:on
    ELKConvertedDiagram convertedDiagram = diagramConverter.convert(diagram);
    ElkNode elkDiagram = convertedDiagram.getElkDiagram();
    assertThat(elkDiagram.getContainedEdges().size()).isEqualTo(1);
    ElkEdge elkEdge = elkDiagram.getContainedEdges().get(0);
    assertThat(elkEdge.getIdentifier()).isEqualTo(edge.getId().toString());
    imageSizeProvider.dispose();
}

Example 3 with ElkEdge

use of org.eclipse.elk.graph.ElkEdge in project elk by eclipse.

the class NGraph method writeDebugGraph.

/**
 * Converts this {@link NGraph} to a KGraph and writes it to the specified filed.
 *
 * @param filePath a path to a file on the filesystem
 */
public void writeDebugGraph(final String filePath) {
    ElkNode elkGraph = ElkGraphUtil.createGraph();
    elkGraph.setProperty(CoreOptions.DIRECTION, Direction.DOWN);
    Map<NNode, ElkNode> nodeMap = Maps.newHashMap();
    for (NNode nNode : nodes) {
        ElkNode elkNode = ElkGraphUtil.createNode(elkGraph);
        nodeMap.put(nNode, elkNode);
        ElkGraphUtil.createLabel(nNode.type + " " + nNode.layer, elkNode);
    }
    for (NNode nNode : nodes) {
        for (NEdge nEdge : nNode.getOutgoingEdges()) {
            ElkEdge elkEdge = ElkGraphUtil.createSimpleEdge(nodeMap.get(nEdge.source), nodeMap.get(nEdge.target));
            ElkGraphUtil.createLabel(nEdge.weight + " " + nEdge.delta, elkEdge);
        }
    }
    ResourceSet rs = new ResourceSetImpl();
    Resource r = rs.createResource(URI.createFileURI(filePath));
    r.getContents().add(elkGraph);
    try {
        r.save(Collections.emptyMap());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

Example 4 with ElkEdge

use of org.eclipse.elk.graph.ElkEdge in project elk by eclipse.

the class GmfDiagramLayoutConnector method processConnections.

/**
 * Creates new edges and takes care of the labels for each connection identified in the
 * {@code buildLayoutGraphRecursively} method.
 *
 * @param mapping
 *            the layout mapping
 */
protected void processConnections(final LayoutMapping mapping) {
    Map<EReference, ElkEdge> reference2EdgeMap = new HashMap<>();
    for (ConnectionEditPart connection : mapping.getProperty(CONNECTIONS)) {
        boolean isOppositeEdge = false;
        Optional<EdgeLabelPlacement> edgeLabelPlacement = Optional.empty();
        ElkEdge edge;
        // Check whether the edge belongs to an Ecore reference, which may have opposites.
        // This is required for the layout of Ecore diagrams, since the bend points of
        // opposite references are kept synchronized by the editor.
        EObject modelObject = connection.getNotationView().getElement();
        if (modelObject instanceof EReference) {
            EReference reference = (EReference) modelObject;
            edge = reference2EdgeMap.get(reference.getEOpposite());
            if (edge != null) {
                edgeLabelPlacement = Optional.of(EdgeLabelPlacement.TAIL);
                isOppositeEdge = true;
            } else {
                edge = ElkGraphUtil.createEdge(null);
                reference2EdgeMap.put(reference, edge);
            }
        } else {
            edge = ElkGraphUtil.createEdge(null);
        }
        BiMap<Object, ElkGraphElement> inverseGraphMap = mapping.getGraphMap().inverse();
        // find a proper source node and source port
        ElkGraphElement sourceElem;
        EditPart sourceObj = connection.getSource();
        if (sourceObj instanceof ConnectionEditPart) {
            sourceElem = inverseGraphMap.get(((ConnectionEditPart) sourceObj).getSource());
            if (sourceElem == null) {
                sourceElem = inverseGraphMap.get(((ConnectionEditPart) sourceObj).getTarget());
            }
        } else {
            sourceElem = inverseGraphMap.get(sourceObj);
        }
        ElkConnectableShape sourceShape = null;
        ElkPort sourcePort = null;
        ElkNode sourceNode = null;
        if (sourceElem instanceof ElkNode) {
            sourceNode = (ElkNode) sourceElem;
            sourceShape = sourceNode;
        } else if (sourceElem instanceof ElkPort) {
            sourcePort = (ElkPort) sourceElem;
            sourceNode = sourcePort.getParent();
            sourceShape = sourcePort;
        } else {
            continue;
        }
        // find a proper target node and target port
        ElkGraphElement targetElem;
        EditPart targetObj = connection.getTarget();
        if (targetObj instanceof ConnectionEditPart) {
            targetElem = inverseGraphMap.get(((ConnectionEditPart) targetObj).getTarget());
            if (targetElem == null) {
                targetElem = inverseGraphMap.get(((ConnectionEditPart) targetObj).getSource());
            }
        } else {
            targetElem = inverseGraphMap.get(targetObj);
        }
        ElkConnectableShape targetShape = null;
        ElkNode targetNode = null;
        ElkPort targetPort = null;
        if (targetElem instanceof ElkNode) {
            targetNode = (ElkNode) targetElem;
            targetShape = targetNode;
        } else if (targetElem instanceof ElkPort) {
            targetPort = (ElkPort) targetElem;
            targetNode = targetPort.getParent();
            targetShape = targetPort;
        } else {
            continue;
        }
        // calculate offset for edge and label coordinates
        ElkNode edgeContainment = ElkGraphUtil.findLowestCommonAncestor(sourceNode, targetNode);
        KVector offset = new KVector();
        ElkUtil.toAbsolute(offset, edgeContainment);
        if (!isOppositeEdge) {
            // set source and target
            edge.getSources().add(sourceShape);
            edge.getTargets().add(targetShape);
            // now that source and target are set, put the edge into the graph
            edgeContainment.getContainedEdges().add(edge);
            mapping.getGraphMap().put(edge, connection);
            // store the current coordinates of the edge
            setEdgeLayout(edge, connection, offset);
        }
        // process edge labels
        processEdgeLabels(mapping, connection, edge, edgeLabelPlacement, offset);
    }
}

Example 5 with ElkEdge

use of org.eclipse.elk.graph.ElkEdge in project elk by eclipse.

the class StraightLineEdgeRouter method routeEdges.

/**
 * Route edges from node center to node center. Then clip it, to not cross the node.
 */
public void routeEdges(final ElkNode node) {
    for (ElkEdge edge : ElkGraphUtil.allOutgoingEdges(node)) {
        if (!(edge.getSources().get(0) instanceof ElkPort)) {
            ElkNode target = ElkGraphUtil.connectableShapeToNode(edge.getTargets().get(0));
            if (!edge.isHierarchical()) {
                double sourceX = node.getX() + node.getWidth() / 2;
                double sourceY = node.getY() + node.getHeight() / 2;
                double targetX = target.getX() + target.getWidth() / 2;
                double targetY = target.getY() + target.getHeight() / 2;
                // Clipping
                KVector vector = new KVector();
                vector.x = targetX - sourceX;
                vector.y = targetY - sourceY;
                KVector sourceClip = new KVector(vector.x, vector.y);
                ElkMath.clipVector(sourceClip, node.getWidth(), node.getHeight());
                vector.x -= sourceClip.x;
                vector.y -= sourceClip.y;
                sourceX = targetX - vector.x;
                sourceY = targetY - vector.y;
                KVector targetClip = new KVector(vector.x, vector.y);
                ElkMath.clipVector(targetClip, target.getWidth(), target.getHeight());
                vector.x -= targetClip.x;
                vector.y -= targetClip.y;
                targetX = sourceX + vector.x;
                targetY = sourceY + vector.y;
                ElkEdgeSection section = ElkGraphUtil.firstEdgeSection(edge, true, true);
                section.setStartLocation(sourceX, sourceY);
                section.setEndLocation(targetX, targetY);
                routeEdges(target);
            }
        }
    }
}