/* ImageFile.java -- digilib image file class.+
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+
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  Digital Image Library servlet components+
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+
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  Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)+
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+
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  This program is free software; you can redistribute  it and/or modify it+
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  under  the terms of  the GNU General  Public License as published by the+
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  Free Software Foundation;  either version 2 of the  License, or (at your+
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  option) any later version.+
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   +
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  Please read license.txt for the full details. A copy of the GPL+
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  may be found at http://www.gnu.org/copyleft/lgpl.html+
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+
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  You should have received a copy of the GNU General Public License+
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  along with this program; if not, write to the Free Software+
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  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA+
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+
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 * Created on 25.02.2003+
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 */+
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 +
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package digilib.io;+
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+
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import java.io.File;+
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import java.io.IOException;+
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import java.io.RandomAccessFile;+
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+
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import javax.imageio.stream.FileImageInputStream;+
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import javax.imageio.stream.ImageInputStream;+
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+
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import digilib.servlet.DigilibConfiguration;+
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import digilib.util.ImageSize;+
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+
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/**+
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 * @author casties+
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 */+
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public class ImageFile extends ImageInput {+
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	+
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	// file+
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	private File file = null;+
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	// file name+
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	private String name = null;+
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	// parent directory+
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	private Directory dir = null;+
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+
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	/** Constructor with File.+
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	 * +
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	 * @param f+
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	 * @param parent+
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	 * @param dir+
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	 */+
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	public ImageFile(File f, ImageSet parent, Directory dir) {+
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		this.file = f;+
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		this.name = f.getName();+
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		this.parent = parent;+
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		this.dir = dir;+
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	}+
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	+
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	/** Constructor with filename (without path).+
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	 * @param fn+
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	 * @param parent+
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	 * @param dir+
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	 */+
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	public ImageFile(String fn, ImageSet parent, Directory dir) {+
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		this.name = fn;+
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		this.dir = dir;+
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		this.file = new File(this.dir.getDir(), fn);+
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		this.parent = parent;+
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	}+
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	+
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	+
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	/** Checks the image and sets size and type.+
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	 * +
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	 */+
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	public void check() {+
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	    if (pixelSize == null) {+
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	        try {+
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	            // use the configured toolkit to identify the image+
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                DigilibConfiguration.identifyDocuImage(this);+
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            } catch (IOException e) {+
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                // nothing much to do...+
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            }+
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	    }+
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	}+
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	+
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	/* (non-Javadoc)+
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     * @see digilib.io.ImageInput#getSize()+
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     */+
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    @Override+
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    public ImageSize getSize() {+
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        check();+
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        return pixelSize;+
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    }+
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+
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    /* (non-Javadoc)+
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     * @see digilib.io.ImageInput#getMimetype()+
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     */+
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    @Override+
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    public String getMimetype() {+
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        check();+
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        return mimetype;+
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    }+
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+
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    /* (non-Javadoc)+
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     * @see digilib.io.ImageInput#getAspect()+
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     */+
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    @Override+
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    public float getAspect() {+
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        check();+
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        return (pixelSize != null) ? pixelSize.getAspect() : 0f;+
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    }+
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+
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    /** Returns the file name (without path).+
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	 * +
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	 * @return+
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	 */+
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	public String getName() {+
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		return name;+
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	}+
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+
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	+
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	/* (non-Javadoc)+
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     * @see digilib.io.ImageInput#hasImageInputStream()+
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     */+
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    @Override+
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    public boolean hasImageInputStream() {+
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        return true;+
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    }+
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+
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    /* (non-Javadoc)+
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     * @see digilib.io.ImageInput#getImageInputStream()+
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     */+
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    @Override+
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    public ImageInputStream getImageInputStream() {+
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        try {+
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            RandomAccessFile rf = new RandomAccessFile(file, "r");+
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            return new FileImageInputStream(rf);+
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        } catch (IOException e) {+
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            // what now?+
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        }+
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        return null;+
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    }+
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+
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    /* (non-Javadoc)+
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     * @see digilib.io.ImageInput#hasFile()+
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     */+
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    @Override+
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    public boolean hasFile() {+
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        return true;+
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    }+
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+
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    /* (non-Javadoc)+
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	 * @see digilib.io.ImageInput#getFile()+
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	 */+
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	public File getFile() {+
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		return file;+
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	}+
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+
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	/* (non-Javadoc)+
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	 * @see digilib.io.ImageInput#setSize(digilib.image.ImageSize)+
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	 */+
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	public void setSize(ImageSize imageSize) {+
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		this.pixelSize = imageSize;+
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		// pass on to parent+
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		if (this.parent != null) {+
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			this.parent.setAspect(imageSize);+
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		}+
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	}+
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+
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    /* (non-Javadoc)+
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     * @see java.lang.Object#toString()+
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     */+
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    @Override+
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    public String toString() {+
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        // try to use File.toString+
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        if (file != null) {+
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            return file.toString();+
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        }+
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        return super.toString();+
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    }+
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+
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	+
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}+
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