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1
8 package com.nightlabs.editor2d.handle;
9
10 import org.eclipse.draw2d.IFigure;
11 import org.eclipse.draw2d.Locator;
12 import org.eclipse.draw2d.geometry.Dimension;
13 import org.eclipse.draw2d.geometry.Point;
14 import org.eclipse.draw2d.geometry.Rectangle;
15
16 import com.nightlabs.editor2d.ShapeDrawComponent;
17 import com.nightlabs.editor2d.edit.ShapeDrawComponentEditPart;
18 import com.nightlabs.editor2d.figures.ShapeFigure;
19 import com.nightlabs.editor2d.j2d.GeneralShape;
20 import com.nightlabs.editor2d.j2d.PathSegment;
21 import com.nightlabs.editor2d.util.J2DUtil;
22
23
24 public class ShapeHandleLocator
25 implements Locator
26 {
27 protected IFigure figure;
28 protected IFigure getFigure() {
29 return figure;
30 }
31
32 protected ShapeDrawComponentEditPart sdcep;
33 public GeneralShape getGeneralShape() {
34 return sdcep.getGeneralShape();
35 }
36
37 protected int index;
38 public int getIndex() {
39 return index;
40 }
41 public void setIndex(int index) {
42 this.index = index;
43 }
44
45 public ShapeHandleLocator(ShapeDrawComponentEditPart sdcep, int index)
46 {
47 super();
48 this.figure = sdcep.getFigure();
49 this.sdcep = sdcep;
50 this.index = index;
51 }
52
53 protected Point getReferencePoint(IFigure target)
54 {
55 Point p = getLocation();
56 getFigure().translateToAbsolute(p);
57 target.translateToRelative(p);
58
59 return p;
60 }
61
62 protected Point getLocation()
63 {
64 PathSegment ps = getGeneralShape().getPathSegment(index);
65 if (ps != null) {
66 return J2DUtil.toDraw2D(ps.getPoint());
67 }
68 return new Point();
69 }
70
71 protected IFigure getReference() {
72 return figure;
73 }
74
75 public void relocate(IFigure target)
76 {
77 target.setLocation(calcCenterPoint(target.getBounds(), getReferencePoint(target)));
78 }
79
80 protected Point calcCenterPoint(Rectangle rect, Point point)
81 {
82 Dimension boundsSize = rect.getSize();
83 return new Point(point.x - boundsSize.width/2, point.y - boundsSize.height/2);
84 }
85 }
86
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