U2TMoveHandle.java

/*
 * Copyright (c) 2009 Borland Software Corporation
 * 
 * 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
 *
 */
package org.eclipse.uml2.diagram.common.internal.draw2d.handles;

import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.DragTracker;
import org.eclipse.gef.handles.MoveHandle;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.tools.DragEditPartsTrackerEx;

public class U2TMoveHandle extends MoveHandle {

	final Insets myFrameInsets;

	public U2TMoveHandle(IGraphicalEditPart owner) {
		this(owner, new Insets(0, 0, 0, 0));
	}

	public U2TMoveHandle(IGraphicalEditPart owner, Insets frameInsets) {
		super(owner);
		myFrameInsets = new Insets(frameInsets);
		this.setForegroundColor(U2THandleKit.SELECTION_COLOR);
		setCursor(null);
	}

	protected void initialize() {
		super.initialize();
		setBorder(null);
	}

	public void paintFigure(Graphics g) {
		Rectangle b = new Rectangle(this.getClientArea()).expand(myFrameInsets);
		g.setLineStyle(Graphics.LINE_DOT);
		g.drawRectangle(b.x, b.y, b.width - 1, b.height - 1);
	}

	private static Insets ourInsets = new Insets();

	public Insets getInsets() {
		ourInsets.left = myFrameInsets.left;
		ourInsets.top = myFrameInsets.top;
		ourInsets.right = Math.max(myFrameInsets.right, BUFFER_GAP);
		ourInsets.bottom = myFrameInsets.bottom;
		return ourInsets;
	}

	public boolean containsPoint(int x, int y) {
		if (!getBounds().contains(x, y)) {
			return false;
		}
		Rectangle.SINGLETON.setBounds(getBounds());
		Rectangle.SINGLETON.width -= BUFFER_GAP;
		return !Rectangle.SINGLETON.contains(x, y);
	}

	protected DragTracker createDragTracker() {
		DragEditPartsTrackerEx tracker = new DragEditPartsTrackerEx(getOwner());
		return tracker;
	}

	public Point getAccessibleLocation() {
		//        return super.getAccessibleLocation();
		Point p = getBounds().getTopRight().translate(-BUFFER_GAP / 2, getBounds().height / 4);
		translateToAbsolute(p);
		return p;
	}

	private static final int BUFFER_GAP = 5;
}