/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.gui.graphs;
import java.awt.Shape;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import org.apache.commons.collections15.Transformer;
/**
* The extended vertex shaper for the {@link GraphViewer}.
*
* @author Ingo Mierswa
* @version $Id: ExtendedVertexShapeTransformer.java,v 1.3 2008/05/09 19:23:24 ingomierswa Exp $
*/
public class ExtendedVertexShapeTransformer<V> implements Transformer<V, Shape> {
private GraphCreator<V,?> graphCreator;
public ExtendedVertexShapeTransformer(GraphCreator<V, ?> graphCreator) {
this.graphCreator = graphCreator;
}
public Shape transform(V object) {
if (graphCreator.isLeaf(object)) {
// leaf
String text = graphCreator.getVertexName(object);
Rectangle2D stringBounds = GraphViewer.VERTEX_BOLD_FONT.getStringBounds(text, new FontRenderContext(null, false, false));
float width = (float)stringBounds.getWidth();
float height = (float)stringBounds.getHeight();
int minWidth = graphCreator.getMinLeafWidth();
int minHeight = graphCreator.getMinLeafHeight();
width = Math.max(width, minWidth);
height = Math.max(height, minHeight);
return new Rectangle2D.Float(-width / 2.0f - 6.0f, -height / 2.0f - 2.0f, width + 8.0f, height + 4.0f);
} else {
// inner nodes
String text = graphCreator.getVertexName(object);
Rectangle2D stringBounds = GraphViewer.VERTEX_PLAIN_FONT.getStringBounds(text, new FontRenderContext(null, false, false));
float width = (float)stringBounds.getWidth();
float height = (float)stringBounds.getHeight();
RoundRectangle2D.Float shape = new RoundRectangle2D.Float(-width / 2.0f - 6.0f, -height / 2.0f - 4.0f, width + 10.0f, height + 8.0f, 10.0f, 10.0f);
return shape;
}
}
}