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DNodeListEditPartWithAlpha.java
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DNodeListEditPartWithAlpha.java
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/*******************************************************************************
* Copyright (c) 2014, 2017 Obeo
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.ecoretools.design.ui.parts;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.gmf.runtime.gef.ui.figures.NodeFigure;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.sirius.diagram.DDiagramElement;
import org.eclipse.sirius.diagram.DNodeList;
import org.eclipse.sirius.diagram.ui.internal.edit.parts.DNodeListEditPart;
import org.eclipse.sirius.ext.gmf.runtime.gef.ui.figures.SiriusDefaultSizeNodeFigure;
/**
* An editpart which change the alpha level based on the mapping of the element.
*
* @author cedric
*
*/
public class DNodeListEditPartWithAlpha extends DNodeListEditPart {
public DNodeListEditPartWithAlpha(View view) {
super(view);
}
@Override
protected void refreshVisuals() {
super.refreshVisuals();
DDiagramElement elem = resolveDiagramElement();
if (elem instanceof DNodeList
&& ((DNodeList) elem).getActualMapping() != null
&& "EC External EClasses".equals(((DNodeList) elem)
.getActualMapping().getName())) {
IFigure fig = getMainFigure();
if (fig instanceof TransparencyFigure) {
((TransparencyFigure) fig).setAlpha(110);
}
}
}
@Override
protected NodeFigure createNodePlate() {
return new TransparencyFigure(getMapMode().DPtoLP(40), getMapMode()
.DPtoLP(40));
}
class TransparencyFigure extends SiriusDefaultSizeNodeFigure {
private int alpha = 255;
public TransparencyFigure(int width, int height) {
super(width, height);
}
public void setAlpha(int i) {
this.alpha = i;
}
@Override
protected void paintChildren(Graphics graphics) {
int prevAlpha = graphics.getAlpha();
graphics.setAlpha(alpha);
super.paintChildren(graphics);
graphics.setAlpha(prevAlpha);
}
}
}