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1   // ******************************************************************************
2   //
3   // Title:       Force Field X.
4   // Description: Force Field X - Software for Molecular Biophysics.
5   // Copyright:   Copyright (c) Michael J. Schnieders 2001-2024.
6   //
7   // This file is part of Force Field X.
8   //
9   // Force Field X is free software; you can redistribute it and/or modify it
10  // under the terms of the GNU General Public License version 3 as published by
11  // the Free Software Foundation.
12  //
13  // Force Field X is distributed in the hope that it will be useful, but WITHOUT
14  // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15  // FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16  // details.
17  //
18  // You should have received a copy of the GNU General Public License along with
19  // Force Field X; if not, write to the Free Software Foundation, Inc., 59 Temple
20  // Place, Suite 330, Boston, MA 02111-1307 USA
21  //
22  // Linking this library statically or dynamically with other modules is making a
23  // combined work based on this library. Thus, the terms and conditions of the
24  // GNU General Public License cover the whole combination.
25  //
26  // As a special exception, the copyright holders of this library give you
27  // permission to link this library with independent modules to produce an
28  // executable, regardless of the license terms of these independent modules, and
29  // to copy and distribute the resulting executable under terms of your choice,
30  // provided that you also meet, for each linked independent module, the terms
31  // and conditions of the license of that module. An independent module is a
32  // module which is not derived from or based on this library. If you modify this
33  // library, you may extend this exception to your version of the library, but
34  // you are not obligated to do so. If you do not wish to do so, delete this
35  // exception statement from your version.
36  //
37  // ******************************************************************************
38  package ffx.ui;
39  
40  import java.awt.Component;
41  import java.awt.event.MouseEvent;
42  import java.awt.event.MouseListener;
43  import java.awt.event.MouseMotionListener;
44  import java.io.Serial;
45  import javax.swing.JSplitPane;
46  
47  /**
48   * The GraphicsSplitPane is an early attempt at working around issues caused by the heavyweight
49   * Canvas3D inside a lightweight Swing SplitPane. Specifically, users cannot drag the slider toward
50   * the heavyweight Canvas3D.
51   *
52   * @author Michael J. Schnieders
53   */
54  public class GraphicsSplitPane extends JSplitPane implements MouseListener, MouseMotionListener {
55  
56    @Serial
57    private static final long serialVersionUID = 1L;
58  
59    private boolean mouseClicked = false;
60    private int currentPos = 0;
61  
62    /** Constructor for GraphicsSplitPane. */
63    public GraphicsSplitPane() {
64      super();
65      addMouseListener(this);
66      addMouseMotionListener(this);
67    }
68  
69    /**
70     * Constructor for GraphicsSplitPane.
71     *
72     * @param orient a int.
73     * @param b a boolean.
74     * @param left a {@link java.awt.Component} object.
75     * @param right a {@link java.awt.Component} object.
76     */
77    public GraphicsSplitPane(int orient, boolean b, Component left, Component right) {
78      super(orient, b, left, right);
79      addMouseListener(this);
80      addMouseMotionListener(this);
81    }
82  
83    /** {@inheritDoc} */
84    public void mouseClicked(MouseEvent e) {
85      mouseClicked = true;
86      currentPos = e.getX();
87    }
88  
89    /** {@inheritDoc} */
90    public void mouseDragged(MouseEvent e) {
91      if (mouseClicked) {
92        int change = e.getX() - currentPos;
93        setDividerLocation(getDividerLocation() + change);
94      }
95    }
96  
97    /** {@inheritDoc} */
98    public void mouseEntered(MouseEvent e) {}
99  
100   /** {@inheritDoc} */
101   public void mouseExited(MouseEvent e) {}
102 
103   /** {@inheritDoc} */
104   public void mouseMoved(MouseEvent e) {}
105 
106   /** {@inheritDoc} */
107   public void mousePressed(MouseEvent e) {}
108 
109   /** {@inheritDoc} */
110   public void mouseReleased(MouseEvent e) {
111     mouseClicked = false;
112   }
113 }