/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* 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:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
/*
* @(#)NullHandle.java 1.0 2003-12-01
*
* Copyright (c) 1996-2006 by the original authors of JHotDraw
* and all its contributors.
* All rights reserved.
*
* The copyright of this software is owned by the authors and
* contributors of the JHotDraw project ("the copyright holders").
* You may not use, copy or modify this software, except in
* accordance with the license agreement you entered into with
* the copyright holders. For details see accompanying license terms.
*/
package org.jhotdraw.draw;
import java.awt.*;
import java.util.*;
/**
* A handle that doesn't change the owned figure. Its only purpose is
* to show feedback that a figure is selected.
*
* @author Werner Randelshofer
* @version 1.0 2003-12-01 Derived from JHotDraw 5.4b1.
*/
public class NullHandle extends LocatorHandle {
/** Creates a new instance. */
public NullHandle(Figure owner, Locator locator) {
super(owner, locator);
}
public Cursor getCursor() {
return Cursor.getDefaultCursor();
}
public void trackStart(Point anchor, int modifiersEx) {
}
public void trackStep(Point anchor, Point lead, int modifiersEx) {
}
public void trackEnd(Point anchor, Point lead, int modifiersEx) {
}
/**
* Creates handles for each lead of a
* figure and adds them to the provided collection.
*/
static public void addLeadHandles(Figure f, Collection<Handle> handles) {
handles.add(new NullHandle(f, new RelativeLocator(0f,0f)));
handles.add(new NullHandle(f, new RelativeLocator(0f,1f)));
handles.add(new NullHandle(f, new RelativeLocator(1f,0f)));
handles.add(new NullHandle(f, new RelativeLocator(1f,1f)));
}
/**
* Draws this handle.
* Null Handles are drawn as unfilled rectangles.
*/
public void draw(Graphics2D g) {
drawRectangle(g,
(Color) getEditor().getHandleAttribute(HandleAttributeKeys.NULL_HANDLE_FILL_COLOR),
(Color) getEditor().getHandleAttribute(HandleAttributeKeys.NULL_HANDLE_STROKE_COLOR)
);
}
}