| /******************************************************************************* |
| * <copyright> |
| * |
| * Copyright (c) 2005, 2012 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> |
| * |
| *******************************************************************************/ |
| package org.eclipse.graphiti.ui.internal.util.draw2d; |
| |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.draw2d.Locator; |
| import org.eclipse.draw2d.geometry.Insets; |
| import org.eclipse.draw2d.geometry.PrecisionRectangle; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| import org.eclipse.gef.handles.HandleBounds; |
| import org.eclipse.graphiti.ui.platform.IConfigurationProvider; |
| |
| /** |
| * A Locator, which sets the target bounds to the reference figure bounds. |
| * Insets are applied to expand/shrink the reference figure bounds at the |
| * beginning of the calculation. The insets are adjusted with the current |
| * zoom-level. |
| * |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class ZoomingInsetsHandleLocator implements Locator { |
| |
| private IFigure reference; |
| private IConfigurationProvider configurationProvider; |
| private Insets handleInsets; |
| |
| /** |
| * Creates a new ZoomingInsetsHandleLocator. |
| * |
| * @param reference |
| * The target bounds are calculated depending on this reference |
| * figure. |
| * @param configurationProvider |
| * The configuration provider which can be used to access the |
| * environment. |
| * @param handleInsets |
| * The insets to apply to the reference figure bounds. |
| */ |
| public ZoomingInsetsHandleLocator(IFigure reference, IConfigurationProvider configurationProvider, Insets handleInsets) { |
| this.reference = reference; |
| this.configurationProvider = configurationProvider; |
| this.handleInsets = handleInsets; |
| } |
| |
| /** |
| * Sets the bounds of the target figure as described above. |
| * |
| * @param target |
| * The target figure for which to set the bounds. |
| */ |
| public void relocate(IFigure target) { |
| Insets insets = new Insets(handleInsets); |
| double zoom = GFHandleHelper.getZoomLevel(configurationProvider); |
| insets.top *= zoom; |
| insets.bottom *= zoom; |
| insets.left *= zoom; |
| insets.right *= zoom; |
| |
| Rectangle bounds; |
| if (reference instanceof HandleBounds) |
| bounds = ((HandleBounds) reference).getHandleBounds(); |
| else |
| bounds = reference.getBounds(); |
| |
| bounds = new PrecisionRectangle(bounds.getCopy()); |
| reference.translateToAbsolute(bounds); |
| target.translateToRelative(bounds); |
| bounds.translate(-insets.left, -insets.top); |
| bounds.resize(insets.getWidth(), insets.getHeight()); |
| |
| target.setBounds(bounds); |
| } |
| } |