org.projectforge.web.wicket.BatikImage.java Source code

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Here is the source code for org.projectforge.web.wicket.BatikImage.java

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/////////////////////////////////////////////////////////////////////////////
//
// Project ProjectForge Community Edition
//         www.projectforge.org
//
// Copyright (C) 2001-2013 Kai Reinhard (k.reinhard@micromata.de)
//
// ProjectForge is dual-licensed.
//
// This community edition is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 3 of the License.
//
// This community edition 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 General
// Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, see http://www.gnu.org/licenses/.
//
/////////////////////////////////////////////////////////////////////////////

package org.projectforge.web.wicket;

import org.apache.wicket.markup.html.image.Image;
import org.apache.wicket.request.http.WebResponse.CacheScope;
import org.apache.wicket.request.resource.AbstractResource;
import org.apache.wicket.request.resource.DynamicImageResource;
import org.apache.wicket.util.time.Duration;
import org.projectforge.renderer.BatikImageRenderer;
import org.projectforge.renderer.ImageFormat;
import org.w3c.dom.Document;

public class BatikImage extends Image {
    private static final long serialVersionUID = -167624996888880342L;

    private final int width;

    private byte[] ba;

    private transient Document document;

    public BatikImage(final String id, final Document document, final int width) {
        super(id);
        this.document = document;
        this.width = width;
    }

    private byte[] getByteArray() {
        if (ba == null) {
            ba = BatikImageRenderer.getByteArray(document, width, ImageFormat.PNG);
        }
        return ba;
    }

    @SuppressWarnings("serial")
    @Override
    protected AbstractResource getImageResource() {
        return new DynamicImageResource() {

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

            @Override
            protected void configureResponse(final ResourceResponse response, final Attributes attributes) {
                super.configureResponse(response, attributes);

                // if (isCacheable() == false) {
                response.setCacheDuration(Duration.NONE);
                response.setCacheScope(CacheScope.PRIVATE);
                // }
            }
        };
    }

}