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.*;
53 import java.awt.event.MouseEvent;
54
55 import com.touchgraph.graphlayout.*;
56
57 /*** DragMultiselectUI contains code for selecting a group on nodes
58 * by enclosing them in a dotted box.
59 *
60 * @author Alexander Shapiro
61 * @version 1.21 $Id: DragMultiselectUI.java,v 1.1.1.1 2004/02/06 08:44:07 keesj Exp $
62 */
63 public class DragMultiselectUI extends TGAbstractDragUI implements TGPaintListener {
64
65 TGPoint2D mousePos=null;
66 TGPoint2D startPos = null;
67
68 DragMultiselectUI( TGPanel tgp ) {
69 super(tgp);
70 }
71
72 public void preActivate() {
73 startPos = null;
74 mousePos = null;
75 tgPanel.addPaintListener(this);
76 }
77
78 public void preDeactivate() {
79 tgPanel.removePaintListener(this);
80 tgPanel.repaint();
81 };
82
83
84 public void mousePressed(MouseEvent e) {
85 startPos = new TGPoint2D(e.getX(), e.getY());
86 mousePos = new TGPoint2D(startPos);
87 }
88
89
90 public void mouseReleased(MouseEvent e) {}
91
92 public void mouseDragged(MouseEvent e) {
93 mousePos.setLocation(e.getX(), e.getY());
94 tgPanel.multiSelect(startPos,mousePos);
95 tgPanel.repaint();
96 }
97
98
99
100 public void paintFirst(Graphics g) {};
101 public void paintAfterEdges(Graphics g) {};
102
103 public void paintLast(Graphics g) {
104
105 if(mousePos==null) return;
106
107 g.setColor(Color.black);
108
109 int x,y,w,h;
110
111 if (startPos.x<mousePos.x) {
112 x=(int) startPos.x;
113 w=(int) (mousePos.x-startPos.x);
114 }
115 else {
116 x=(int) mousePos.x;
117 w=(int) (startPos.x-mousePos.x);
118 }
119
120 if (startPos.y<mousePos.y) {
121 y=(int) startPos.y;
122 h=(int) (mousePos.y-startPos.y);
123 }
124 else {
125 y=(int) mousePos.y;
126 h=(int) (startPos.y-mousePos.y);
127 }
128
129 //God, where are the line styles when you need them
130 for(int horiz = x;horiz<x+w;horiz+=2){
131 g.drawLine(horiz,y,horiz,y); //Drawing lines because there is no way
132 g.drawLine(horiz,y+h,horiz,y+h); //to draw a single pixel.
133 }
134 for(int vert = y;vert<y+h;vert+=2){
135 g.drawLine(x,vert,x,vert);
136 g.drawLine(x+w,vert,x+w,vert);
137 }
138
139 }
140
141 } // end