1 /*
2 * TouchGraph LLC. Apache-Style Software License
3 *
4 *
5 * Copyright (c) 2001-2002 Alexander Shapiro. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by
22 * TouchGraph LLC (http://www.touchgraph.com/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "TouchGraph" or "TouchGraph LLC" must not be used to endorse
27 * or promote products derived from this software without prior written
28 * permission. For written permission, please contact
29 * alex@touchgraph.com
30 *
31 * 5. Products derived from this software may not be called "TouchGraph",
32 * nor may "TouchGraph" appear in their name, without prior written
33 * permission of alex@touchgraph.com.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL TOUCHGRAPH OR ITS CONTRIBUTORS BE
39 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
40 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
41 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
42 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
43 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
44 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
45 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 * ====================================================================
47 *
48 */
49
50 package com.touchgraph.graphlayout.interaction;
51
52 import java.awt.event.*;
53
54 import javax.swing.JScrollBar;
55
56 import com.touchgraph.graphlayout.*;
57
58 /*** LocalityScroll.
59 *
60 * @author Alexander Shapiro
61 * @version 1.21 $Id: LocalityScroll.java,v 1.1.1.1 2004/02/06 08:44:07 keesj Exp $
62 */
63 public class LocalityScroll implements GraphListener {
64
65 private JScrollBar localitySB;
66
67 private TGPanel tgPanel;
68
69 public LocalityScroll(TGPanel tgp) {
70 tgPanel=tgp;
71 localitySB = new JScrollBar(JScrollBar.HORIZONTAL, 2, 1, 0, 7);
72 localitySB.setBlockIncrement(1);
73 localitySB.setUnitIncrement(1);
74 localitySB.addAdjustmentListener(new localityAdjustmentListener());
75 tgPanel.addGraphListener(this);
76 }
77
78 public JScrollBar getLocalitySB() {
79 return localitySB;
80 }
81
82 public int getLocalityRadius() {
83 int locVal = localitySB.getValue();
84 if(locVal>=6) return LocalityUtils.INFINITE_LOCALITY_RADIUS;
85 else return locVal;
86 }
87
88 public void setLocalityRadius(int radius) {
89 if (radius <= 0 )
90 localitySB.setValue(0);
91 else if (radius <= 5) //and > 0
92 localitySB.setValue(radius);
93 else // radius > 5
94 localitySB.setValue(6);
95 }
96
97 public void graphMoved() {} //From GraphListener interface
98 public void graphReset() { localitySB.setValue(2); } //From GraphListener interface
99
100 private class localityAdjustmentListener implements AdjustmentListener {
101 public void adjustmentValueChanged(AdjustmentEvent e) {
102 Node select = tgPanel.getSelect();
103 if (select!=null || getLocalityRadius() == LocalityUtils.INFINITE_LOCALITY_RADIUS)
104 try {
105 tgPanel.setLocale(select, getLocalityRadius());
106 }
107 catch (TGException ex) {
108 System.out.println("Error setting locale");
109 ex.printStackTrace();
110 }
111 }
112 }
113
114 } // end com.touchgraph.graphlayout.interaction.LocalityScroll