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/***********************************************************************
* Copyright (c) 2007, 2008, 2009 Anyware Technologies, Obeo
*
* 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:
* Anyware Technologies - initial API and implementation
* Obeo
*
**********************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.outline.overview;
import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.draw2d.MarginBorder;
import org.eclipse.draw2d.Viewport;
import org.eclipse.draw2d.parts.ScrollableThumbnail;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.editparts.ScalableFreeformRootEditPart;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
/**
* This class is an outline control showing an overview of a graphical editor. <br>
*
* @author <a href="mailto:david.sciamma@anyware-tech.com">David Sciamma </a>
* @author <a href="mailto:jerome.benois@obeo.fr">Jerome Benois</a>
*/
public class OverviewComposite extends Composite {
/** the control of the overview */
private Canvas overview;
/** the root edit part */
private ScalableFreeformRootEditPart rootEditPart;
/** the thumbnail */
private ScrollableThumbnail thumbnail;
/**
* Creates a new OverviewOutlinePage instance.
*
* @param parent
* the parent composite
* @param rootEditPart
* the root edit part
*/
public OverviewComposite(Composite parent, ScalableFreeformRootEditPart rootEditPart) {
super(parent, SWT.BORDER);
this.rootEditPart = rootEditPart;
GridLayout layout = new GridLayout();
layout.horizontalSpacing = 0;
layout.marginHeight = 0;
layout.marginWidth = 0;
layout.verticalSpacing = 0;
setLayout(layout);
setLayoutData(new GridData(GridData.FILL_BOTH));
createControl(this);
}
/**
* Creates the inner controls
*
* @param parent
* the parent composite
*/
public void createControl(Composite parent) {
// An swt canvas and lws drawing the figure.
overview = new Canvas(parent, SWT.NONE);
overview.setLayoutData(new GridData(GridData.FILL_BOTH));
// A draw2d object linking swt and draw2d
LightweightSystem lightweightSystem = new LightweightSystem(overview);
// create the thumbnail
thumbnail = new ScrollableThumbnail((Viewport)rootEditPart.getFigure());
thumbnail.setBorder(new MarginBorder(3));
thumbnail.setSource(rootEditPart.getLayer(LayerConstants.PRINTABLE_LAYERS/* SCALABLE_LAYERS */));
lightweightSystem.setContents(thumbnail);
}
/**
* {@inheritDoc}
*/
public void dispose() {
if(null != thumbnail) {
thumbnail.deactivate();
thumbnail = null;
}
super.dispose();
}
/**
* {@inheritDoc}
*/
public void setVisible(boolean state) {
thumbnail.setVisible(state);
super.setVisible(state);
}
/**
* {@inheritDoc}
*
* @return the main control
*/
public Control getControl() {
return overview;
}
/**
* {@inheritDoc}
*
* @return <code>true</code> if the focus succeed
*/
public boolean setFocus() {
if(getControl() != null) {
return getControl().setFocus();
}
return false;
}
}
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