com.userweave.components.valueListPanel.imageValueListPanel.ImageDisplayPanel.java Source code

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Here is the source code for com.userweave.components.valueListPanel.imageValueListPanel.ImageDisplayPanel.java

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/*******************************************************************************
 * This file is part of UserWeave.
 *
 *     UserWeave 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.
 *
 *     UserWeave 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 UserWeave.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright 2012 User Prompt GmbH | Psychologic IT Expertise
 *******************************************************************************/
package com.userweave.components.valueListPanel.imageValueListPanel;

import org.apache.wicket.behavior.AttributeAppender;
import org.apache.wicket.markup.html.image.NonCachingImage;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.Model;
import org.apache.wicket.request.resource.DynamicImageResource;

/**
 * Panel to display an icon on a tile in the 
 * icon usability configurations view.
 * 
 * @author oma
 */
public class ImageDisplayPanel extends Panel {
    private static final long serialVersionUID = 1L;

    /**
     * Default constructor
     * 
     * @param id
     *       Component markup id.
     * @param byteArray
     *       Image data.
     * @param width
     *       If larger than 0, the image will be scaled on this width,
     *       if the height value is also larger than 0.
     * @param height
     *       If larger than 0, the image will be scaled on this height,
     *       if the width value is also larger than 0.
     */
    public ImageDisplayPanel(String id, final ByteArray byteArray, final int width, final int height) {
        super(id);

        NonCachingImage image = new NonCachingImage("image", new DynamicImageResource() {
            private static final long serialVersionUID = 1L;

            @Override
            protected byte[] getImageData(Attributes attributes) {
                return byteArray.getByteArray();
            }
        });

        add(image);

        // show image in original size if width and height equals 0
        if (width != 0 && height != 0) {
            image.add(new AttributeAppender("style", new Model<String>(
                    "width:" + Integer.toString(width) + "px;" + "height:" + Integer.toString(height) + "px;"),
                    ";"));
        }
    }
}