| /******************************************************************************* |
| * <copyright> |
| * |
| * Copyright (c) 2005, 2010 SAP AG. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * SAP AG - initial API, implementation and documentation |
| * |
| * </copyright> |
| * |
| *******************************************************************************/ |
| /* |
| * Created on 06.07.2005 |
| */ |
| package org.eclipse.graphiti.features.impl; |
| |
| import org.eclipse.graphiti.datatypes.IDimension; |
| import org.eclipse.graphiti.features.IFeatureProvider; |
| import org.eclipse.graphiti.features.IMoveAnchorFeature; |
| import org.eclipse.graphiti.features.context.IContext; |
| import org.eclipse.graphiti.features.context.IMoveAnchorContext; |
| import org.eclipse.graphiti.internal.Messages; |
| import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm; |
| import org.eclipse.graphiti.mm.pictograms.AdvancedAnchor; |
| import org.eclipse.graphiti.mm.pictograms.Anchor; |
| import org.eclipse.graphiti.mm.pictograms.AnchorContainer; |
| import org.eclipse.graphiti.mm.pictograms.BoxRelativeAnchor; |
| import org.eclipse.graphiti.mm.pictograms.FixPointAnchor; |
| import org.eclipse.graphiti.services.Graphiti; |
| |
| /** |
| * The Class DefaultMoveAnchorFeature. |
| */ |
| public class DefaultMoveAnchorFeature extends AbstractFeature implements IMoveAnchorFeature { |
| |
| /** |
| * Creates a new {@link DefaultMoveAnchorFeature}. |
| * |
| * @param fp |
| * the feature provider |
| */ |
| public DefaultMoveAnchorFeature(IFeatureProvider fp) { |
| super(fp); |
| } |
| |
| public boolean canMoveAnchor(IMoveAnchorContext context) { |
| Anchor anchor = context.getAnchor(); |
| return (anchor instanceof FixPointAnchor || anchor instanceof BoxRelativeAnchor); |
| } |
| |
| public void moveAnchor(IMoveAnchorContext context) { |
| if (!getUserDecision()) { |
| return; |
| } |
| int posX = context.getX(); |
| int posY = context.getY(); |
| |
| moveAnchor(context.getAnchor(), posX, posY); |
| } |
| |
| public void preMoveAnchor(IMoveAnchorContext context) { |
| } |
| |
| public void postMoveAnchor(IMoveAnchorContext context) { |
| } |
| |
| /** |
| * Move anchor. |
| * |
| * @param anchor |
| * the anchor |
| * @param posX |
| * the pos x |
| * @param posY |
| * the pos y |
| */ |
| protected void moveAnchor(Anchor anchor, int posX, int posY) { |
| |
| if (anchor instanceof AdvancedAnchor) { |
| posX -= anchor.getGraphicsAlgorithm().getX(); |
| posY -= anchor.getGraphicsAlgorithm().getY(); |
| } |
| |
| if (anchor instanceof FixPointAnchor) { |
| FixPointAnchor fpAnchor = (FixPointAnchor) anchor; |
| fpAnchor.setLocation(Graphiti.getGaCreateService().createPoint(posX, posY)); |
| } else if (anchor instanceof BoxRelativeAnchor) { |
| BoxRelativeAnchor brAnchor = (BoxRelativeAnchor) anchor; |
| AnchorContainer anchorContainer = brAnchor.getParent(); |
| GraphicsAlgorithm anchorContainerGa = anchorContainer.getGraphicsAlgorithm(); |
| IDimension sizeOfGraphicsAlgorithm = Graphiti.getGaService().calculateSize(anchorContainerGa, false); |
| int width = sizeOfGraphicsAlgorithm.getWidth(); |
| double newRelativeX = 1d * posX / width; |
| brAnchor.setRelativeWidth(newRelativeX); |
| int height = sizeOfGraphicsAlgorithm.getHeight(); |
| double newRelativeY = 1d * posY / height; |
| brAnchor.setRelativeHeight(newRelativeY); |
| } |
| } |
| |
| public boolean canExecute(IContext context) { |
| boolean ret = false; |
| if (context instanceof IMoveAnchorContext) { |
| ret = canMoveAnchor((IMoveAnchorContext) context); |
| } |
| return ret; |
| } |
| |
| public void execute(IContext context) { |
| if (context instanceof IMoveAnchorContext) { |
| moveAnchor((IMoveAnchorContext) context); |
| } |
| } |
| |
| @Override |
| public String getName() { |
| return NAME; |
| } |
| |
| private static final String NAME = Messages.DefaultMoveAnchorFeature_0_xfld; |
| } |