small fix 2

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

@@ -10,6 +10,7 @@ import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.GridLayout;
 import java.awt.Image;
+import java.awt.Point;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.FocusEvent;
@@ -135,6 +136,8 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements mustic
 
 	private JCheckBox 				clusterDiameterCheckBox;
 	private JTextField 				diameterTextField;
+	
+	private Point 					offSet								= new Point(0,0);
 
 	/** Record steps of constraint construction */
 	private int 					currentStep 						= 0;
@@ -374,10 +377,33 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements mustic
 					zoomBoxChkBox.doClick();
 				}
 
+				int step = 10;
 				// hide constraints
 				if(e.getKeyCode() == KeyEvent.VK_H) {
 					check.doClick();
 				}
+				if (e.getKeyCode() == KeyEvent.VK_LEFT) {
+					offSet.x += (int) (step*mZoomRate);
+					displayPanel.repaint();
+				}
+				else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
+			        offSet.x -= (int) (step*mZoomRate);
+					displayPanel.repaint();
+				}
+				else if (e.getKeyCode() == KeyEvent.VK_UP) {
+			        offSet.y += (int) (step*mZoomRate);
+					displayPanel.repaint();
+				}
+				else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
+			        offSet.y -= (int) (step*mZoomRate);
+					displayPanel.repaint();
+				}
+//				if (offSet.x < 0) {
+//					offSet.x = 0;
+//				}
+//				if(offSet.y < 0) {
+//					offSet.y = 0;
+//				}
 
 			}
 
@@ -467,6 +493,8 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements mustic
 
 	@Override
 	public BufferedImage getDisplayedImage() {
+//		return mNew.getSubimage(offSet.x, offSet.y, 
+//				mNew.getWidth() - offSet.x, mNew.getHeight() - offSet.y);
 		return mNew;
 	}
 
@@ -1384,5 +1412,10 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements mustic
 		} 
 	}
 
+	@Override
+	public Point getOffset() {
+		return offSet;
+	}
+
 
 }

src/mustic/gui/panels/ImagePanel.java

@@ -1207,4 +1207,9 @@ public class ImagePanel extends JPanel implements Zoomable {
 		return rawImage;
 	}
 
+	@Override
+	public Point getOffset() {
+		return new Point(0,0);
+	}
+
 }

src/mustic/utils/image/ZoomBoxPanel.java

@@ -174,8 +174,8 @@ public class ZoomBoxPanel extends JPanel{
 			return new Point(0, 0);
 		}
 
-		int x = (getWidth() - dialog.getDisplayedImage().getWidth()) / 2;
-		int y = (getHeight() - dialog.getDisplayedImage().getHeight()) / 2;
+		int x = (getWidth() - dialog.getDisplayedImage().getWidth()) / 2 + dialog.getOffset().x;
+		int y = (getHeight() - dialog.getDisplayedImage().getHeight()) / 2 + dialog.getOffset().y;
 		return new Point(x, y);
 	}
 

src/mustic/utils/image/Zoomable.java

 package mustic.utils.image;
 
 import java.awt.Image;
+import java.awt.Point;
 import java.awt.image.BufferedImage;
 
 /**
@@ -36,4 +37,6 @@ public interface Zoomable {
 	 * @return the BufferedImage from the origin image
 	 */
 	public Image getMatchingImage(int x, int y, int width, int height, float zoom);
+	
+	public Point getOffset();
 }