2 VARNA is a tool for the automated drawing, visualization and annotation of the secondary structure of RNA, designed as a companion software for web servers and databases.
3 Copyright (C) 2008 Kevin Darty, Alain Denise and Yann Ponty.
4 electronic mail : Yann.Ponty@lri.fr
5 paper mail : LRI, bat 490 Université Paris-Sud 91405 Orsay Cedex France
7 This file is part of VARNA version 3.1.
8 VARNA version 3.1 is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License
9 as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
11 VARNA version 3.1 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
12 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along with VARNA version 3.1.
16 If not, see http://www.gnu.org/licenses.
18 package fr.orsay.lri.varna.controlers;
20 import java.awt.Point;
21 import java.awt.event.MouseEvent;
22 import java.awt.event.MouseListener;
23 import java.awt.event.MouseMotionListener;
25 import fr.orsay.lri.varna.VARNAPanel;
29 * Controller of the mouse for scroll wheel click and dragged events
34 public class ControleurDraggedMolette implements MouseListener,
36 private VARNAPanel _vp;
38 * <code>true</code> if the right button is pressed<br>
39 * <code>false</code> if not
41 private static Boolean _rightButtonClick;
43 * The vector which contains the direction of the mouse movement
45 private static Point _direction;
47 * The position of the cursor before the mouse drag
49 private static Point _avant;
51 * The position of the cursor after the mouse drag
53 private static Point _apres;
55 public ControleurDraggedMolette(VARNAPanel vp) {
57 _rightButtonClick = false;
58 _avant = _apres = _direction = new Point();
61 public void mouseDragged(MouseEvent e) {
62 // si le bon boutton a été pressé
63 if (_rightButtonClick) {
64 _apres = e.getPoint();
65 _direction = new Point(_apres.x - _avant.x, _apres.y - _avant.y);
66 _vp.setTranslation(new Point(_vp.getTranslation().x + _direction.x,
67 _vp.getTranslation().y + _direction.y));
69 _vp.checkTranslation();
74 public void mouseMoved(MouseEvent e) {
77 public void mouseClicked(MouseEvent e) {
80 public void mouseEntered(MouseEvent e) {
83 public void mouseExited(MouseEvent e) {
86 public void mousePressed(MouseEvent e) {
87 // lors du clic, la position du curseur est enregistrée
88 _avant = e.getPoint();
89 // si le boutton molette est pressé ou si le boutton gauche et shift
91 if (e.getButton() == MouseEvent.BUTTON2)
93 _rightButtonClick = true;
97 _rightButtonClick = false;
103 public void mouseReleased(MouseEvent e) {
104 // si le boutton molette est relaché ou si le boutton gauche et shift
106 if (e.getButton() == MouseEvent.BUTTON2)
107 _rightButtonClick = false;