/* ******************************************************************************
* Copyright (c) 2006-2012 XMind Ltd. and others.
*
* This file is a part of XMind 3. XMind releases 3 and
* above are dual-licensed under the Eclipse Public License (EPL),
* which is available at http://www.eclipse.org/legal/epl-v10.html
* and the GNU Lesser General Public License (LGPL),
* which is available at http://www.gnu.org/licenses/lgpl.html
* See http://www.xmind.net/license.html for details.
*
* Contributors:
* XMind Ltd. - initial API and implementation
*******************************************************************************/
package org.xmind.ui.internal.decorations;
import org.eclipse.draw2d.IFigure;
import org.xmind.gef.draw2d.geometry.PrecisionPoint;
import org.xmind.gef.draw2d.graphics.Path;
import org.xmind.ui.decorations.AbstractBranchConnection;
public class StraightBranchConnection extends AbstractBranchConnection {
private PrecisionPoint s1 = new PrecisionPoint();
private PrecisionPoint s2 = new PrecisionPoint();
private PrecisionPoint t1 = new PrecisionPoint();
private PrecisionPoint t2 = new PrecisionPoint();
private PrecisionPoint c1 = new PrecisionPoint();
private PrecisionPoint c2 = new PrecisionPoint();
private boolean cachedTapered;
public StraightBranchConnection() {
super();
}
public StraightBranchConnection(String id) {
super(id);
}
protected void route(IFigure figure, Path shape) {
PrecisionPoint p1 = getSourcePosition(figure);
PrecisionPoint p2 = getTargetPosition(figure);
if (isTapered()) {
shape.moveTo(s1);
shape.lineTo(c1);
shape.lineTo(c2);
shape.lineTo(s2);
shape.lineTo(t2);
shape.lineTo(t1);
shape.close();
} else {
shape.moveTo(p1);
shape.lineTo(p2);
}
}
public void invalidate() {
super.invalidate();
cachedTapered = false;
}
protected boolean isPositionValid() {
return super.isPositionValid() && cachedTapered == isTapered();
}
protected void calculateControlPoints(IFigure figure,
PrecisionPoint sourcePos, PrecisionPoint targetPos) {
super.calculateControlPoints(figure, sourcePos, targetPos);
cachedTapered = isTapered();
if (isTapered()) {
calcTaperedPositions(sourcePos, targetPos, 0, s1, s2);
calcTaperedPositions(sourcePos, targetPos, 1, t1, t2);
calculateSourceControlPoints(t1, s1, s2, c1);
calculateSourceControlPoints(t2, s2, s1, c2);
}
}
}