/*
* LabaledConnection.java
*
* This file is part of the STS-Tool project.
* Copyright (c) 2011-2012 "University of Trento - DISI" All rights reserved.
*
* Is strictly forbidden to remove this copyright notice from this source code.
*
* Disclaimer of Warranty:
* STS-Tool (this software) is provided "as-is" and without warranty of any kind,
* express, implied or otherwise, including without limitation, any warranty of
* merchantability or fitness for a particular purpose.
* In no event shall the copyright holder or contributors be liable for any direct,
* indirect, incidental, special, exemplary, or consequential damages
* including, but not limited to, procurement of substitute goods or services;
* loss of use, data, or profits; or business interruption) however caused and on
* any theory of liability, whether in contract, strict liability, or tort (including
* negligence or otherwise) arising in any way out of the use of this software, even
* if advised of the possibility of such damage.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* "University of Trento - DISI","University of Trento - DISI" DISCLAIMS THE
* WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://www.sts-tool.eu/License.php
*
* For more information, please contact STS-Tool group at this
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*/
package eu.aniketos.wp1.ststool.diagram.custom.figure.connections;
import java.util.List;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.ConnectionLocator;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.RotatableDecoration;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gmf.runtime.draw2d.ui.geometry.PointListUtilities;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
public class LabaledConnection extends SimpleConnection {
final private static Font TEXT_FONT = new Font(null, "Arial", 10, SWT.NORMAL);
RotableLabel middleDecoration;
public LabaledConnection(String label) {
super();
middleDecoration = new RotableLabel(" " + label + " ");
ConnectionLocator locator = new ConnectionLocator(this, ConnectionLocator.MIDDLE);
add(middleDecoration, locator);
}
@Override
public void paint(Graphics g){
//if(!System.getProperty("os.name").startsWith("Windows")){
if (true) {
super.paint(g);
return;
}
List<Figure> fl = getChildren();
Label l = null;
for (Figure f : fl) {
if (f instanceof Label) {
l = (Label) f;
}
f.paint(g);
}
PointList labelPoints = new PointList();
Rectangle r = l.getBounds();
if (r != null) {
labelPoints.addPoint(r.x, r.y);
labelPoints.addPoint(r.x + r.width, r.y);
labelPoints.addPoint(r.x + r.width, r.y + r.height);
labelPoints.addPoint(r.x, r.y + r.height);
labelPoints.addPoint(r.x, r.y);
}
PointList connectionPoints = getPoints();
int index;
boolean pointInLabel;
if (connectionPoints.size() % 2 == 0) {
index = (connectionPoints.size() / 2) - 1;
pointInLabel = false;
} else {
index = (connectionPoints.size() / 2) - 1;
pointInLabel = true;
}
try {
for (int i = 0; i < connectionPoints.size() - 1; i++) {
if (i == index) {
PointList intersections = new PointList();
PointList distances = new PointList();
PointList segment = new PointList();
segment.addPoint(connectionPoints.getPoint(i));
segment.addPoint(connectionPoints.getPoint(i + 1));
PointListUtilities.findIntersections(segment, labelPoints, intersections, distances);
Point p;
if (!pointInLabel) {
p = PointListUtilities.pickClosestPoint(intersections, connectionPoints.getPoint(i));
if (p != null) g.drawLine(connectionPoints.getPoint(i), p);
p = PointListUtilities.pickClosestPoint(intersections, connectionPoints.getPoint(i + 1));
if (p != null) g.drawLine(connectionPoints.getPoint(i + 1), p);
} else {
Point fp = null;
try {
fp = intersections.getFirstPoint();
} catch (Exception e) {
}
if (fp != null) {
g.drawLine(connectionPoints.getPoint(i), fp);
++i;
segment = new PointList();
intersections = new PointList();
segment.addPoint(connectionPoints.getPoint(i));
segment.addPoint(connectionPoints.getPoint(i + 1));
PointListUtilities.findIntersections(segment, labelPoints, intersections, distances);
fp = null;
try {
fp = intersections.getFirstPoint();
} catch (Exception e) {
}
if (fp != null) g.drawLine(connectionPoints.getPoint(i + 1), fp);
}
}
} else {
g.drawLine(connectionPoints.getPoint(i), connectionPoints.getPoint(i + 1));
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
class RotableLabel extends Label implements RotatableDecoration {
public RotableLabel(String label) {
super(label);
setFont(TEXT_FONT);
//if(!System.getProperty("os.name").startsWith("Windows")){
if (true) {
setBackgroundColor(ColorConstants.white);
setForegroundColor(ColorConstants.black);
setOpaque(true);
}
}
@Override
public void setReferencePoint(Point p){
}
@Override
public void paint(Graphics g){
//g.rotate(45);
super.paint(g);
//g.rotate(0);
}
}
}