/*
 * Copyright (C) 2001  The Mir-coders group
 *
 * This file is part of Mir.
 *
 * Mir 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Mir 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 Mir; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * In addition, as a special exception, The Mir-coders gives permission to link
 * the code of this program with the com.oreilly.servlet library, any library
 * licensed under the Apache Software License, The Sun (tm) Java Advanced
 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
 * the above that use the same license as the above), and distribute linked
 * combinations including the two.  You must obey the GNU General Public
 * License in all respects for all of the code used other than the above
 * mentioned libraries.  If you modify this file, you may extend this exception
 * to your version of the file, but you are not obligated to do so.  If you do
 * not wish to do so, delete this exception statement from your version.
 */

package mir.misc;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2001
 * Company:      Indymedia
 * @author
 * @version 1.0
 */

import java.io.*;
//import java.awt.image.renderable.ParameterBlock;
import java.awt.Dimension;
import java.awt.Rectangle;
import magick.*;

public class WebdbImage
{

    private Logfile theLog = Logfile.getInstance(MirConfig.getPropWithHome("HTMLTemplateProcessor.Logfile"));
	// imageTypes
	public final static int        WEBDB_JPG=0;
	public final static int        WEBDB_GIF=1;

	// default values for scaling
	private int               maxIconSize=120;
	private int               maxImageSize=640;

	private byte[]            iconData;
	private byte[]            imageData;
	private int               imageType;
	private int               iconWidth;
	private int               iconHeight;

	// internal representation of the image
	private MagickImage       magickImage;


	// constructor
	public WebdbImage(byte[] image, int type)
		throws IOException
	{
		imageType=type;
        try {
            magickImage = new MagickImage(new ImageInfo(), image);
        } catch (MagickException e) {theLog.printDebugInfo("fail: "+e.toString());}
		scaleImage();
	}

	public WebdbImage(byte[] image, int type, int iconMax)
		throws IOException
	{
		imageType=type;
		maxIconSize=iconMax;
        try {
            magickImage = new MagickImage(new ImageInfo(), image);
        } catch (MagickException e) {theLog.printDebugInfo("fail: "+e.toString());}
		scaleImage();
	}

	public WebdbImage(byte[] image, int type, int iconMax, int imageMax)
		throws IOException
	{
		imageType=type;
		maxIconSize=iconMax;
		maxImageSize=imageMax;
        try {
            magickImage = new MagickImage(new ImageInfo(), image);
        } catch (MagickException e) {theLog.printDebugInfo("fail: "+e.toString());}
		scaleImage();
	}


	// acc3ssor-methods
	public int getIconWidth() throws IOException {
		if (iconData==null) scaleIcon();
		return iconWidth;
	}

	public int getIconHeight() throws IOException {
		if (iconData==null) scaleIcon();
		return iconHeight;
	}

	public int getImageWidth() {
        try {
            return (int)magickImage.getDimension().getWidth();
        } catch (MagickException e) { return -1;}
	}

	public int getImageHeight() {
        int gg;
        try {
		    return (int)magickImage.getDimension().getHeight();
        } catch (MagickException e) { return -1;}
	}

	public byte[] getImage() {
		if (imageData==null) {
            try {
                ImageInfo imageInfo = new ImageInfo();
                imageInfo.init();

                switch (imageType) {
                    case WEBDB_JPG:
                        imageInfo.setMagickMember("JPG");
                    case WEBDB_GIF:
                        imageInfo.setMagickMember("JPG");
                }

                imageData = magickImage.imageToBlob(imageInfo);
            } catch (MagickException e) {
                theLog.printDebugInfo("getImage: magick "+e.toString());
            }
        }
        return imageData;
	}

	public byte[] getIcon()
		throws IOException
	{
		if (iconData == null) scaleIcon();
		return iconData;
	}

	private void scaleImage()
		throws java.io.IOException
	{
		if (maxImageSize>0 && ( getImageHeight()> maxImageSize|| getImageWidth() >maxImageSize))
		{
			float scale;
			if (getImageHeight() > getImageWidth())
				scale = (float)maxImageSize / (float)getImageHeight();
			else
				scale = (float)maxImageSize / (float)getImageWidth();

            try {
			    magickImage = magickImage.scaleImage((int)scale*getImageWidth(), (int)scale*getImageHeight());
            } catch (MagickException e) {}
		}
	}

	private void scaleIcon()
		throws java.io.IOException
	{
		if (iconData==null) {
			float scale;
			if (getImageHeight() > getImageWidth())
				scale = (float)maxIconSize / (float)getImageHeight();
			else
				scale = (float)maxIconSize / (float)getImageWidth();

            try {
			    MagickImage temp = magickImage.scaleImage((int)(scale*getImageWidth()), (int)(scale*getImageHeight()));
                ImageInfo imageInfo = new ImageInfo();
                imageInfo.init();
                /** @todo gif */
                switch (imageType) {
                    case WEBDB_JPG:
                        imageInfo.setMagickMember("JPG");
                    case WEBDB_GIF:
                        imageInfo.setMagickMember("JPG");
                }
                iconWidth=(int)temp.getDimension().getWidth();
                iconHeight=(int)temp.getDimension().getHeight();
                // Put a black rectangle around the border
                DrawInfo drawInfo = new DrawInfo(imageInfo);
                drawInfo.setPrimitive("Rectangle 0 0 "+(iconWidth-1)+" "+(iconHeight-1));
                drawInfo.setStroke(PixelPacket.queryColorDatabase("black"));
                temp.drawImage(drawInfo);
                iconData = temp.imageToBlob(imageInfo);
            } catch (MagickException e) {}
		}
	}

}