| /******************************************************************************* |
| * Copyright (C) 2018 Fondazione Bruno Kessler. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Luca Cristoforetti - initial API and implementation |
| ******************************************************************************/ |
| package org.polarsys.chess.diagramsCreator.connectors; |
| |
| import org.eclipse.elk.conn.gmf.GmfDiagramLayoutConnector; |
| import org.eclipse.elk.core.math.ElkPadding; |
| import org.eclipse.elk.core.options.CoreOptions; |
| import org.eclipse.elk.core.options.PortConstraints; |
| import org.eclipse.elk.core.options.PortLabelPlacement; |
| import org.eclipse.elk.core.service.LayoutMapping; |
| import org.eclipse.elk.graph.ElkGraphElement; |
| import org.eclipse.elk.graph.ElkNode; |
| import org.eclipse.ui.IWorkbenchPart; |
| |
| /** |
| * This class extends the default connector adding specific settings for the IBD diagram. |
| * @author cristofo |
| * |
| */ |
| public class IBDDiagramLayoutConnector extends GmfDiagramLayoutConnector { |
| |
| private static final double topPad = 30; |
| private static final double sidePad = 50; |
| |
| /** |
| * Adjusts some parameters of the layout. |
| * @param mapping the layout mapping to be modified |
| */ |
| private void adjustLayout(LayoutMapping mapping) { |
| for (ElkGraphElement graphElement : mapping.getGraphMap().keySet()) { |
| |
| // Set position of the port labels |
| if (graphElement instanceof ElkNode) { |
| ElkNode node = (ElkNode) graphElement; |
| if (node.isHierarchical() && node.getParent() != null) { |
| |
| // This is the root node |
| node.setProperty(CoreOptions.PORT_LABELS_PLACEMENT, PortLabelPlacement.OUTSIDE); |
| } else { |
| |
| // This is a common node |
| node.setProperty(CoreOptions.PORT_LABELS_PLACEMENT, PortLabelPlacement.INSIDE); |
| } |
| } |
| |
| // Routing is orthogonal by default |
| // graphElement.setProperty(CoreOptions.EDGE_ROUTING, EdgeRouting.POLYLINE); |
| |
| // Some padding between root element and inner elements |
| graphElement.setProperty(CoreOptions.PADDING, new ElkPadding(topPad, sidePad, sidePad, sidePad)); |
| |
| // Tries to keep input ports on the left side and output ports on the right side |
| graphElement.setProperty(CoreOptions.PORT_CONSTRAINTS, PortConstraints.FIXED_SIDE); |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public LayoutMapping buildLayoutGraph(final IWorkbenchPart workbenchPart, final Object diagramPart) { |
| |
| final LayoutMapping mapping = super.buildLayoutGraph(workbenchPart, diagramPart); |
| |
| adjustLayout(mapping); |
| |
| return mapping; |
| } |
| } |