1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*****************************************************************************
* Copyright (c) 2010 CEA
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Atos Origin - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.edit.policies;
import java.util.Collections;
import java.util.List;
import org.eclipse.draw2d.Connection;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Polyline;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.PrecisionRectangle;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.DragTracker;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editparts.AbstractConnectionEditPart;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
import org.eclipse.gef.handles.MoveHandle;
import org.eclipse.gef.requests.ChangeBoundsRequest;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.SetBoundsCommand;
import org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.NonResizableEditPolicyEx;
import org.eclipse.gmf.runtime.diagram.ui.internal.figures.LabelHelper;
import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.diagram.ui.tools.DragEditPartsTrackerEx;
import org.eclipse.gmf.runtime.draw2d.ui.geometry.PointListUtilities;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.View;
/**
* This class offers the same features as {@link NonResizableLabelEditPolicy}, except that move is privileged instead of drag and drop.
* It is useful for edit parts on messages.
*/
public class MoveableNonResizableLabelEditPolicy extends NonResizableEditPolicyEx {
@Override
protected List<?> createSelectionHandles() {
MoveHandle mh = new MoveHandle((GraphicalEditPart)getHost());
mh.setBorder(null);
mh.setDragTracker(createSelectionHandleDragTracker());
return Collections.singletonList(mh);
}
private Polyline tether = null;
protected void eraseChangeBoundsFeedback(ChangeBoundsRequest request) {
super.eraseChangeBoundsFeedback(request);
if(tether != null)
removeFeedback(tether);
tether = null;
}
protected IFigure createDragSourceFeedbackFigure() {
IFigure feedback = super.createDragSourceFeedbackFigure();
tether = new Polyline();
tether.setLineStyle(Graphics.LINE_DASHDOT);
tether.setForegroundColor(((IGraphicalEditPart)getHost()).getFigure().getForegroundColor());
addFeedback(tether);
return feedback;
}
/**
* Calculates a point located at the middel of the parent connection
*
* @return the point
*/
private Point getReferencePoint() {
if(getHost().getParent() instanceof AbstractConnectionEditPart) {
PointList ptList = ((Connection)((ConnectionEditPart)getHost().getParent()).getFigure()).getPoints();
Point refPoint = PointListUtilities.calculatePointRelativeToLine(ptList, 0, 50, true);
return refPoint;
} else if(getHost().getParent() instanceof GraphicalEditPart) {
return ((AbstractGraphicalEditPart)getHost().getParent()).getFigure().getBounds().getCenter();
}
return null;
}
protected void showChangeBoundsFeedback(ChangeBoundsRequest request) {
super.showChangeBoundsFeedback(request);
IFigure p = getDragSourceFeedbackFigure();
Rectangle r = p.getBounds();
Point refPoint = getReferencePoint();
// translate the feedback figure
PrecisionRectangle rect = new PrecisionRectangle(getInitialFeedbackBounds().getCopy());
getHostFigure().translateToAbsolute(rect);
rect.translate(request.getMoveDelta());
rect.resize(request.getSizeDelta());
p.translateToRelative(rect);
p.setBounds(rect);
Rectangle centerMain = null;
// TODO: remove this hack. We should be using the reference point for
// the teher end, however,
// the reference point is causing miscaculation when positioning. This
// has to be redone in version 2.
if(((IGraphicalEditPart)getHost().getParent()).getFigure() instanceof Connection) {
centerMain = new Rectangle(refPoint.x, refPoint.y, 0, 0);
getHostFigure().translateToAbsolute(centerMain);
p.translateToRelative(centerMain);
} else {
centerMain = ((IGraphicalEditPart)getHost().getParent()).getFigure().getBounds().getCopy();
centerMain.translate(centerMain.width / 2, centerMain.height / 2);
getHostFigure().translateToAbsolute(centerMain);
p.translateToRelative(centerMain);
}
PrecisionRectangle ref = new PrecisionRectangle(centerMain);
Point midTop = new Point(r.x + r.width / 2, r.y);
Point midBottom = new Point(r.x + r.width / 2, r.y + r.height);
Point midLeft = new Point(r.x, r.y + r.height / 2);
Point midRight = new Point(r.x + r.width, r.y + r.height / 2);
Point startPoint = midTop;
int x = r.x + r.width / 2 - refPoint.x;
int y = r.y + r.height / 2 - refPoint.y;
if(y > 0 && y > x && y > -x)
startPoint = midTop;
else if(y < 0 && y < x && y < -x)
startPoint = midBottom;
else if(x < 0 && y > x && y < -x)
startPoint = midRight;
else
startPoint = midLeft;
tether.setStart(startPoint);
tether.setEnd(ref.getLocation());
}
protected Command getMoveCommand(ChangeBoundsRequest request) {
GraphicalEditPart editPart = (GraphicalEditPart)getHost();
Point refPoint = getReferencePoint();
// translate the feedback figure
PrecisionRectangle rect = new PrecisionRectangle(getInitialFeedbackBounds().getCopy());
getHostFigure().translateToAbsolute(rect);
rect.translate(request.getMoveDelta());
rect.resize(request.getSizeDelta());
getHostFigure().translateToRelative(rect);
Point normalPoint = LabelHelper.offsetFromRelativeCoordinate(getHostFigure(), rect, refPoint);
ICommand moveCommand = new SetBoundsCommand(editPart.getEditingDomain(), DiagramUIMessages.MoveLabelCommand_Label_Location, new EObjectAdapter((View)editPart.getModel()), normalPoint);
return new ICommandProxy(moveCommand);
}
/**
* Overridden to use a customized drag tracker for the handles. The <code>isMove()</code> method of the drag tracker needs to be overridden
* as the parent of the label and connection will not be the same as the
* target editpart, instead it returns true always since labels can only be
* moved and not resized.
*
* @return a drag tracker
*/
protected DragTracker createSelectionHandleDragTracker() {
return new DragEditPartsTrackerEx(getHost()) {
protected boolean isMove() {
return true;
}
};
}
}
|
