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Structr is an open source framework based on the popular Neo4j graph database.
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/**
 * Copyright (C) 2010-2016 Structr GmbH
 *
 * This file is part of Structr .
 *
 * Structr 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.
 *
 * Structr 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 Structr.  If not, see .
 */
package org.structr.web.property;

import org.apache.commons.lang3.StringUtils;
import org.structr.api.Predicate;
import org.structr.api.search.SortType;
import org.structr.common.SecurityContext;
import org.structr.core.GraphObject;
import org.structr.core.property.AbstractReadOnlyProperty;
import org.structr.core.property.Property;
import org.structr.web.entity.Image;

//~--- classes ----------------------------------------------------------------

/**
 * A property that automatically created a thumbnail for an image. (?)
 *
 *
 */
public class ThumbnailProperty extends AbstractReadOnlyProperty {

	private int width    = 0;
	private int height   = 0;
	private boolean crop = false;


	public ThumbnailProperty(final String name) {

		super(name);

		this.unvalidated = true;

	}

	@Override
	public Image getProperty(SecurityContext securityContext, GraphObject obj, boolean applyConverter) {
		return getProperty(securityContext, obj, applyConverter, null);
	}

	@Override
	public Image getProperty(SecurityContext securityContext, GraphObject obj, boolean applyConverter, Predicate predicate) {

		if (obj.getProperty(Image.isThumbnail)) {
			return null;
		}

		return ((Image)obj).getScaledImage(width, height, crop);
	}

	@Override
	public Class relatedType() {
		return Image.class;
	}

	@Override
	public Class valueType() {
		return relatedType();
	}

	@Override
	public boolean isCollection() {
		return false;
	}

	@Override
	public SortType getSortType() {
		return null;
	}

	@Override
	public Property format(final String format) {

		if (StringUtils.isNotBlank(format) && format.contains(",")) {

			final String[] parts = format.split("[, ]+");
			if (parts.length == 3) {

				width    = Integer.parseInt(parts[0].trim());
				height   = Integer.parseInt(parts[1].trim());
				crop = Boolean.parseBoolean(parts[2].trim());
			}
		}

		return this;
	}
}