de.thischwa.pmcms.tool.image.ImageTool.java Source code

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Here is the source code for de.thischwa.pmcms.tool.image.ImageTool.java

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/*******************************************************************************
 * Poor Man's CMS (pmcms) - A very basic CMS generating static html pages.
 * http://poormans.sourceforge.net
 * Copyright (C) 2004-2013 by Thilo Schwarz
 * 
 * == BEGIN LICENSE ==
 * 
 * Licensed under the terms of any of the following licenses at your
 * choice:
 * 
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 * 
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 * 
 * == END LICENSE ==
 ******************************************************************************/
package de.thischwa.pmcms.tool.image;

import java.io.File;

import org.apache.commons.io.FilenameUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import de.thischwa.pmcms.Constants;
import de.thischwa.pmcms.exception.FatalException;
import de.thischwa.pmcms.view.renderer.resource.VirtualImage;

/**
 * Tool which contains all image processing functions.<br>
 * Managed by spring!
 * 
 * @author Thilo Schwarz
 */
@Service
public class ImageTool {
    private static Logger logger = Logger.getLogger(ImageTool.class);

    @Autowired
    private ImageInfo imageInfo;

    @Autowired()
    private AImageManipulation imageManipulation;

    public void createCashedImage(final VirtualImage imageFile) {
        File cachedFile = imageFile.getCacheFile();
        File srcFile = imageFile.getBaseFile();

        if (cachedFile.exists() && srcFile.lastModified() <= cachedFile.lastModified()) {
            logger.info("Image exists and isn't modified, don't need to render again: "
                    .concat(cachedFile.getAbsolutePath()));
            return;
        }

        if (!cachedFile.getParentFile().exists())
            cachedFile.getParentFile().mkdirs();
        try {
            imageManipulation.resizeImage(srcFile, cachedFile, imageFile.getDimension());
        } catch (Exception e) {
            throw new FatalException("Error while resizing image!", e);
        }
    }

    public File getDialogPreview(final File srcImageFile, final Dimension previewDimension) {
        if (srcImageFile == null)
            return null;
        File destImageFile = new File(Constants.TEMP_DIR, "swt_dialog_preview".concat(File.separator)
                .concat(FilenameUtils.getName(srcImageFile.getAbsolutePath())));
        if (!destImageFile.getParentFile().exists())
            destImageFile.getParentFile().mkdirs();

        try {
            if (destImageFile.exists())
                destImageFile.delete();
            imageManipulation.resize(srcImageFile, destImageFile, previewDimension);
        } catch (Exception e) {
            throw new FatalException("Error while resizing image!", e);
        }
        return destImageFile;
    }

    public Dimension getDimension(final File imageFile) {
        return imageInfo.getDimension(imageFile);
    }

    // just for dev
    public void resizeImage(final File srcImageFile, final File destImageFile, final Dimension dimension)
            throws Exception {
        imageManipulation.resizeImage(srcImageFile, destImageFile, dimension);
    }
}