/*
* Copyright (c) 2008 Borland Software Corporation
*
* 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:
* Michael Golubev (Borland) - initial API and implementation
*/
package org.eclipse.uml2.diagram.timing.draw2d.layout;
import java.util.Iterator;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.uml2.diagram.timing.edit.parts.DSegmentEditPart;
import org.eclipse.uml2.diagram.timing.model.timingd.DSegment;
public class ValueLineLayout extends AbstractEditPartAwareXYLayout {
@Override
public void layout(IFigure parent) {
Iterator<?> children = parent.getChildren().iterator();
Dimension clientAreaSize = parent.getClientArea().getSize();
Point offset = getOrigin(parent);
IFigure f;
while (children.hasNext()) {
f = (IFigure)children.next();
Rectangle bounds = (Rectangle)getConstraint(f);
if (bounds == null) continue;
bounds = bounds.getCopy();
if (bounds.height == -1 || bounds.width == -1){
Dimension preferredSize = f.getPreferredSize(bounds.width, bounds.height);
if (bounds.height == -1){
bounds.height = preferredSize.height;
}
if (bounds.width == -1){
bounds.width = preferredSize.width;
}
}
if (bounds.height > clientAreaSize.height){
bounds.height = clientAreaSize.height;
}
bounds.y = clientAreaSize.height / 2 - bounds.height / 2;
if (shouldStretch(f)) {
bounds.width = clientAreaSize.width - bounds.x;
}
bounds = bounds.getTranslated(offset);
f.setBounds(bounds);
}
}
private boolean shouldStretch(IFigure f) {
EditPart editPart = findEditPart(f);
if (editPart instanceof DSegmentEditPart){
DSegmentEditPart segmentEditPart = (DSegmentEditPart)editPart;
EObject element = segmentEditPart.resolveSemanticElement();
if (element instanceof DSegment){
DSegment segment = (DSegment)element;
return !segment.isClosedSegment();
}
}
return false;
}
}