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1 package de.mpg.mpiwg.itgroup.digilib.manipulator.extensions;
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2
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3
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4 import org.eclipse.swt.SWT;
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5 import org.eclipse.swt.events.MouseEvent;
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6 import org.eclipse.swt.events.MouseListener;
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7 import org.eclipse.swt.graphics.Color;
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8 import org.eclipse.swt.graphics.GC;
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9 import org.eclipse.swt.graphics.Point;
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10 import org.eclipse.swt.widgets.Label;
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11
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12 import de.mpg.mpiwg.itgroup.digilib.digiImage.DigiImageController;
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13 import de.mpg.mpiwg.itgroup.digilib.plugin.editors.DigilibLinkEditorObservable;
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14
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9
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15 /**
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16 * Listener to select the zoom area for the zoomarea function on digiimage.
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17 * calls zoom area after an area on the image was selected.
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18 * @author dwinter
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19 *
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20 */
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21 public class ZoomAreaRectangleListener implements MouseListener {
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22 static int FIRST_CLICK=1;
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23 static int SECOND_CLICK=2;
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24 static int NO_CLICK=0;
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25 int status=NO_CLICK;
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26 private Label label;
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27 private Point firstPoint;
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28 private DigiImageController dc;
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29
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30
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31 private ZoomAreaRectangleListener() {};
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32
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33 public ZoomAreaRectangleListener(DigiImageController dc){
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34 this.label = dc.digiImage.getLabel();
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35 this.dc=dc;
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36 }
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37 public void reset(){
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38 status=0;
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39 }
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40 public void mouseDoubleClick(MouseEvent e) {
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41 // TODO Auto-generated method stub
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42
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43 }
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44
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45 public void mouseDown(MouseEvent e) {
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46 // TODO Auto-generated method stub
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47
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48 }
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49
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50 public void mouseUp(MouseEvent e) {
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51 if (status==NO_CLICK){
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52 handleFirstClick(e);
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53 } else if (status==FIRST_CLICK){
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54 handleSecondClick(e);
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55 }
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56
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57 }
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58
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59 private void handleSecondClick(MouseEvent e) {
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60 //Canvas canvas = new Canvas(label.getParent(),SWT.NO_BACKGROUND);
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61
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62 GC gc = new GC(label.getImage());
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63
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64 gc.setForeground(new Color(label.getDisplay(),255,0,0));
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65
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66 gc.drawRectangle(firstPoint.x, firstPoint.y, e.x-firstPoint.x, e.y-firstPoint.y);
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67 gc.dispose();
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68 label.redraw();
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69 status=SECOND_CLICK;
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70 dc.zoomArea(firstPoint.x,firstPoint.y,e.x,e.y);
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71 dc.digiImage.getLabel().removeMouseListener(this);
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72 DigilibLinkEditorObservable.INSTANCE.setCursorStatus(SWT.CURSOR_ARROW);
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73 //DigilibLinkEditorObservable.INSTANCE.imageHasChanged(dc.digiImage);
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74
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75 }
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76
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77 private void handleFirstClick(MouseEvent e) {
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78 //Canvas canvas = new Canvas(label.getParent(),SWT.NO_BACKGROUND);
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79
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80 GC gc = new GC(label.getImage());
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81
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82 gc.setForeground(new Color(label.getDisplay(),255,0,0));
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83 firstPoint = new Point(e.x,e.y);
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84 gc.drawOval(e.x, e.y, 10, 10);
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85 gc.dispose();
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86 status=FIRST_CLICK;
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87 label.redraw();
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88 DigilibLinkEditorObservable.INSTANCE.setCursorStatus(SWT.CURSOR_CROSS);
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89 }
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90
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91
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92 }
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