Java 11 integration;

[jalview.git] / src2 / fr / orsay / lri / varna / controlers / ControleurDraggedMolette.java

diff --git a/src2/fr/orsay/lri/varna/controlers/ControleurDraggedMolette.java b/src2/fr/orsay/lri/varna/controlers/ControleurDraggedMolette.java
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+/*
+ 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.
+ Copyright (C) 2008  Kevin Darty, Alain Denise and Yann Ponty.
+ electronic mail : Yann.Ponty@lri.fr
+ paper mail : LRI, bat 490 Université Paris-Sud 91405 Orsay Cedex France
+
+ This file is part of VARNA version 3.1.
+ VARNA version 3.1 is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ VARNA version 3.1 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with VARNA version 3.1.
+ If not, see http://www.gnu.org/licenses.
+ */
+package fr.orsay.lri.varna.controlers;
+
+import java.awt.Point;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.MouseMotionListener;
+
+import fr.orsay.lri.varna.VARNAPanel;
+
+
+/**
+ * Controller of the mouse for scroll wheel click and dragged events
+ * 
+ * @author darty
+ * 
+ */
+public class ControleurDraggedMolette implements MouseListener,
+               MouseMotionListener {
+       private VARNAPanel _vp;
+       /**
+        * <code>true</code> if the right button is pressed<br>
+        * <code>false</code> if not
+        */
+       private static Boolean _rightButtonClick;
+       /**
+        * The vector which contains the direction of the mouse movement
+        */
+       private static Point _direction;
+       /**
+        * The position of the cursor before the mouse drag
+        */
+       private static Point _avant;
+       /**
+        * The position of the cursor after the mouse drag
+        */
+       private static Point _apres;
+
+       public ControleurDraggedMolette(VARNAPanel vp) {
+               _vp = vp;
+               _rightButtonClick = false;
+               _avant = _apres = _direction = new Point();
+       }
+
+       public void mouseDragged(MouseEvent e) {
+               // si le bon boutton a été pressé
+               if (_rightButtonClick) {
+                       _apres = e.getPoint();
+                       _direction = new Point(_apres.x - _avant.x, _apres.y - _avant.y);
+                       _vp.setTranslation(new Point(_vp.getTranslation().x + _direction.x,
+                                       _vp.getTranslation().y + _direction.y));
+                       _avant = _apres;
+                       _vp.checkTranslation();
+                       _vp.repaint();
+               }
+       }
+
+       public void mouseMoved(MouseEvent e) {
+       }
+
+       public void mouseClicked(MouseEvent e) {
+       }
+
+       public void mouseEntered(MouseEvent e) {
+       }
+
+       public void mouseExited(MouseEvent e) {
+       }
+
+       public void mousePressed(MouseEvent e) {
+               // lors du clic, la position du curseur est enregistrée
+               _avant = e.getPoint();
+               // si le boutton molette est pressé ou si le boutton gauche et shift
+               // sont pressés
+               if (e.getButton() == MouseEvent.BUTTON2)
+               {
+                       _rightButtonClick = true;
+               }
+               else
+               {
+                       _rightButtonClick = false;
+               }
+                       
+                       
+       }
+
+       public void mouseReleased(MouseEvent e) {
+               // si le boutton molette est relaché ou si le boutton gauche et shift
+               // sont relachés
+               if (e.getButton() == MouseEvent.BUTTON2)
+                       _rightButtonClick = false;
+       }
+}