| /******************************************************************************* |
| * Copyright (c) 2000, 2010 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.gef.handles; |
| |
| 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; |
| |
| /** |
| * A Locator used to place {@link MoveHandle}s. By default, a MoveHandle's |
| * bounds are equal to its owner figure's bounds, expanded by the handle's |
| * {@link Insets}. |
| */ |
| public class MoveHandleLocator implements Locator { |
| |
| private IFigure reference; |
| |
| /** |
| * Creates a new MoveHandleLocator and sets its reference figure to |
| * <code>ref</code>. The reference figure should be the handle's owner |
| * figure. |
| * |
| * @param ref |
| * the handle's owner |
| */ |
| public MoveHandleLocator(IFigure ref) { |
| setReference(ref); |
| } |
| |
| /** |
| * Returns the reference figure for this locator. |
| * |
| * @return the handle's owner |
| */ |
| protected IFigure getReference() { |
| return reference; |
| } |
| |
| /** |
| * Sets the handle's bounds to that of its owner figure's bounds, expanded |
| * by the handle's Insets. |
| * |
| * @param target |
| * The IFigure to relocate |
| */ |
| public void relocate(IFigure target) { |
| Insets insets = target.getInsets(); |
| Rectangle bounds; |
| if (getReference() instanceof HandleBounds) |
| bounds = ((HandleBounds) getReference()).getHandleBounds(); |
| else |
| bounds = getReference().getBounds(); |
| bounds = new PrecisionRectangle(bounds.getResized(-1, -1)); |
| getReference().translateToAbsolute(bounds); |
| target.translateToRelative(bounds); |
| bounds.translate(-insets.left, -insets.top); |
| bounds.resize(insets.getWidth() + 1, insets.getHeight() + 1); |
| target.setBounds(bounds); |
| } |
| |
| /** |
| * Sets the reference figure. |
| * |
| * @param follow |
| * the reference figure, should be the handle's owner figure |
| */ |
| public void setReference(IFigure follow) { |
| this.reference = follow; |
| } |
| |
| } |