utilities.util.java Source code

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Here is the source code for utilities.util.java

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//    Pdfprfbericht - Creates a Pdf-File from XML
//    Copyright (C) 2015  Jan Scholz // jan_scholz@gmx.net
//
//    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 utilities;

import com.itextpdf.text.BadElementException;
import com.itextpdf.text.Utilities;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import javax.activation.MimetypesFileTypeMap;
import javax.annotation.processing.FilerException;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;

public class util {

    public static float m2p(float value) {
        return Utilities.millimetersToPoints(value);
    }

    public static String getExtension(File f) {
        return f.getName().substring(f.getName().length() - 3, f.getName().length());
    }

    private static boolean isPng(File img) {
        return getExtension(img).equalsIgnoreCase("png");
    }

    public static File resize(File img, float quality) throws IOException, BadElementException {

        if (!isPng(img)) {

            BufferedImage bufImage = ImageIO.read(img);
            int img_width = 600;
            int img_height = (int) (bufImage.getHeight() / ((double) (bufImage.getWidth() / img_width)));
            int type = bufImage.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : bufImage.getType();

            BufferedImage resizedImage = new BufferedImage(img_width, img_height, type);
            Graphics2D g = resizedImage.createGraphics();
            g.drawImage(bufImage, 0, 0, img_width, img_height, null);
            g.dispose();

            OutputStream os;
            ImageOutputStream ios;
            ImageWriter writer;
            File compressedImageFile;

            compressedImageFile = new File(System.getProperty("user.home") + "/AppData/Local/Temp/temp.jpg");
            os = new FileOutputStream(compressedImageFile);

            Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("jpg");
            writer = (ImageWriter) writers.next();

            ios = ImageIO.createImageOutputStream(os);
            writer.setOutput(ios);

            ImageWriteParam param = writer.getDefaultWriteParam();

            param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            param.setCompressionQuality(quality);
            writer.write(null, new IIOImage(resizedImage, null, null), param);

            os.close();
            ios.close();
            writer.dispose();

            return compressedImageFile;

        } else {
            return img;

        }

    }

}