| /******************************************************************************* |
| * 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.Cursors; |
| import org.eclipse.draw2d.LineBorder; |
| import org.eclipse.draw2d.Locator; |
| import org.eclipse.draw2d.geometry.Point; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| |
| import org.eclipse.gef.DragTracker; |
| import org.eclipse.gef.GraphicalEditPart; |
| import org.eclipse.gef.tools.DragEditPartsTracker; |
| |
| /** |
| * A Handle used for moving {@link GraphicalEditPart}s. |
| */ |
| public class MoveHandle extends AbstractHandle { |
| |
| /** |
| * The hit-threshold for {@link #containsPoint(int, int)}. |
| * |
| * @deprecated subclasses should not reference this field. |
| */ |
| protected static final int INNER_PAD = 2; |
| |
| /** |
| * Creates a MoveHandle for the given <code>GraphicalEditPart</code> using a |
| * default {@link Locator}. |
| * |
| * @param owner |
| * The GraphicalEditPart to be moved by this handle. |
| */ |
| public MoveHandle(GraphicalEditPart owner) { |
| this(owner, new MoveHandleLocator(owner.getFigure())); |
| } |
| |
| /** |
| * Creates a MoveHandle for the given <code>GraphicalEditPart</code> using |
| * the given <code>Locator</code>. |
| * |
| * @param owner |
| * The GraphicalEditPart to be moved by this handle. |
| * @param loc |
| * The Locator used to place the handle. |
| */ |
| public MoveHandle(GraphicalEditPart owner, Locator loc) { |
| super(owner, loc); |
| initialize(); |
| } |
| |
| /** |
| * Overridden to create a {@link DragEditPartsTracker}. |
| * |
| * @see org.eclipse.gef.handles.AbstractHandle#createDragTracker() |
| */ |
| protected DragTracker createDragTracker() { |
| DragEditPartsTracker tracker = new DragEditPartsTracker(getOwner()); |
| tracker.setDefaultCursor(getCursor()); |
| return tracker; |
| } |
| |
| /** |
| * Returns <code>true</code> if the point (x,y) is contained within this |
| * handle. |
| * |
| * @param x |
| * The x coordinate. |
| * @param y |
| * The y coordinate. |
| * @return <code>true</code> if the point (x,y) is contained within this |
| * handle. |
| */ |
| public boolean containsPoint(int x, int y) { |
| if (!super.containsPoint(x, y)) |
| return false; |
| return !Rectangle.getSINGLETON().setBounds(getBounds()) |
| .shrink(INNER_PAD, INNER_PAD).contains(x, y); |
| } |
| |
| /** |
| * Returns a point along the right edge of the handle. |
| * |
| * @see org.eclipse.gef.Handle#getAccessibleLocation() |
| */ |
| public Point getAccessibleLocation() { |
| Point p = getBounds().getTopRight().translate(-1, |
| getBounds().height / 4); |
| translateToAbsolute(p); |
| return p; |
| } |
| |
| /** |
| * Initializes the handle. Sets the {@link DragTracker} and DragCursor. |
| */ |
| protected void initialize() { |
| setOpaque(false); |
| setBorder(new LineBorder(1)); |
| setCursor(Cursors.SIZEALL); |
| } |
| |
| } |