Added the possibility of zooming in the zoom box panel and resizing the zoom box panel

src/mustic/gui/dialog/classifier/ConstraintsSelectionDialog.java

@@ -16,6 +16,7 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
+import java.awt.event.InputEvent;
 import java.awt.event.ItemEvent;
 import java.awt.event.ItemListener;
 import java.awt.event.KeyEvent;
@@ -104,7 +105,7 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements Zoomab
 	/** Image displayed */
 	private BufferedImage 			mNew								= null;
 	
-	/** Panl that containsthe displayed image */
+	/** Panel that contains the displayed image */
 	private JPanel					displayPanel						= null;
 
 	public JPanel 					mainPanel;
@@ -221,37 +222,35 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements Zoomab
 		// display the image
 		this.displayPanel = (JPanel) new ZoomBoxPanel(this);
 
-		// key listener for the key "h" which hides/displays the current constraints on the image
-		this.displayPanel.addKeyListener(new KeyListener() {
-
-			@Override
-			public void keyTyped(KeyEvent e) {
-			}
-
-			@Override
-			public void keyPressed(KeyEvent e) {
-				if(e.getKeyCode() == KeyEvent.VK_H) {
-					// active JCheckBox check
-					check.doClick();
-				}
-				
-			}
-
-			@Override
-			public void keyReleased(KeyEvent e) {
-				
-			}
-			
-		});
-		this.displayPanel.setFocusable(true);
 		this.displayPanel.addMouseWheelListener(new MouseWheelListener() {
 			@Override
 			public void mouseWheelMoved(MouseWheelEvent e) {
-				if (e.getUnitsToScroll() > 0) {
-					zoomOut();
-				} else {
-					zoomIn();
+				
+				// zoom in zoom box
+				if((e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK) {
+					if (e.getUnitsToScroll() > 0) {
+						((ZoomBoxPanel) displayPanel).zoomInBox();
+					} else {
+						((ZoomBoxPanel) displayPanel).zoomOutBox();
+					}	
 				}
+				// resize zoom box area
+				else if((e.getModifiers() & InputEvent.ALT_MASK) == InputEvent.ALT_MASK) {
+					if (e.getUnitsToScroll() > 0) {
+						((ZoomBoxPanel) displayPanel).increaseZoomBoxArea();
+					} else {
+						((ZoomBoxPanel) displayPanel).decreaseZoomBoxArea();
+					}	
+				}
+				// zoom in image
+				else {	
+					if (e.getUnitsToScroll() > 0) {
+						zoomOut();
+					} else {
+						zoomIn();
+					}
+				}
+
 			}
 		});
 
@@ -374,8 +373,35 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements Zoomab
 		otherComponentList.add(constraintsColorChooser);
 
 		JCheckBox zoomBoxChkBox = new JCheckBox("Zoom Box");
-		zoomBoxChkBox.setMnemonic(KeyEvent.VK_Z);
-//		zoomBoxChkBox.setSelected(zoomBoxActivated);
+		
+		this.displayPanel.addKeyListener(new KeyListener() {
+
+			@Override
+			public void keyTyped(KeyEvent e) {
+			}
+	
+			@Override
+			public void keyPressed(KeyEvent e) {
+				
+				// enable zoom box
+				if(e.getKeyCode() == KeyEvent.VK_Z) {
+					zoomBoxChkBox.doClick();
+				}
+				
+				// hide constraints
+				if(e.getKeyCode() == KeyEvent.VK_H) {
+					check.doClick();
+				}
+				
+			}
+	
+			@Override
+			public void keyReleased(KeyEvent e) {
+				
+			}
+		
+		});
+		this.displayPanel.setFocusable(true);
 		zoomBoxChkBox.addItemListener(new ItemListener() {
 		
 			@Override