org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/features/resize/AreaBorderResizeFeature.java

/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2013, 2013 SAP AG.
 * 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:
 *    SAP AG - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.fmc.blockdiagram.editor.features.resize;

import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IResizeShapeContext;
import org.eclipse.graphiti.features.impl.DefaultResizeShapeFeature;
import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm;
import org.eclipse.graphiti.mm.algorithms.MultiText;
import org.eclipse.graphiti.mm.algorithms.Polyline;
import org.eclipse.graphiti.mm.algorithms.Rectangle;
import org.eclipse.graphiti.mm.algorithms.styles.Orientation;
import org.eclipse.graphiti.mm.algorithms.styles.Point;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.graphiti.services.IGaService;

/**
 * Resizes the AreaBorder Shape.
 * 
 * @author Heiko Witteborg 
 * 
 */
public class AreaBorderResizeFeature extends DefaultResizeShapeFeature {

	public AreaBorderResizeFeature(IFeatureProvider fp) {
		super(fp);
	}

	@Override
	public void resizeShape(IResizeShapeContext context) {
		super.resizeShape(context);
		IGaService ga = Graphiti.getGaService();

		int w = context.getWidth();
		int h = context.getHeight();
		int min = 100;
		// check that the longer dim is at least min
		if (context.getWidth() > context.getHeight()) {
			w = context.getWidth() < min ? min : w;
		} else {
			h = context.getHeight() < min ? min : h;
		}

		int margin = 2;
		int lineWidth = 2;
		int textHeight = 20;
		int textWidth = 100;

		Rectangle invRec = (Rectangle) context.getShape()
				.getGraphicsAlgorithm();
		Polyline line = null;
		MultiText txt = null;
		for (GraphicsAlgorithm gaChild : invRec.getGraphicsAlgorithmChildren()) {
			if (gaChild instanceof Polyline) {
				line = (Polyline) gaChild;
			} else if (gaChild instanceof MultiText) {
				txt = (MultiText) gaChild;
			}
		}

		if (context.getWidth() > context.getHeight()) {
			// position of containing rectangle
			ga.setLocationAndSize(invRec, context.getX(), context.getY(), w, 3
					* margin + lineWidth + textHeight);

			// position of text field
			txt.setHorizontalAlignment(Orientation.ALIGNMENT_RIGHT);
			ga.setLocationAndSize(txt, margin, margin, w - (2 * margin),
					textHeight);

			// position of dashed line
			ga.setLocationAndSize(line, 0, 2 * margin + textHeight, w, 2);
			Point endPoint = line.getPoints().get(1);
			endPoint.setX(w);
			endPoint.setY(0);
			// line.getPoints().add(ga.createPoint(w, 0));
		} else {
			// position of containing rectangle
			ga.setLocationAndSize(invRec, context.getX(), context.getY(), 3
					* margin + lineWidth + textWidth, h);

			// position of text field
			txt.setHorizontalAlignment(Orientation.ALIGNMENT_LEFT);
			txt.setVerticalAlignment(Orientation.ALIGNMENT_BOTTOM);
			ga.setLocationAndSize(txt, 2 * margin + lineWidth, margin,
					textWidth, h - 2 * margin);

			// position of dashed line
			ga.setLocationAndSize(line, margin, 0, 2, h);
			Point endPoint = line.getPoints().get(1);
			endPoint.setX(0);
			endPoint.setY(h);
		}

		// layoutPictogramElement(lineShape);
	}

}