Package de.laures.cewolf.taglib.tags

Source Code of de.laures.cewolf.taglib.tags.SerializableTexturePaint

/* ================================================================
* Cewolf : Chart enabling Web Objects Framework
* ================================================================
*
* Project Info:  http://cewolf.sourceforge.net
* Project Lead:  Guido Laures (guido@laures.de);
*
* (C) Copyright 2002, by Guido Laures
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/

package de.laures.cewolf.taglib.tags;

import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.TexturePaint;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import javax.imageio.ImageIO;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
* Special texture paint which can be serialized.
* @see TexturePaint
* @author  Guido Laures
*/
public class SerializableTexturePaint implements Paint, Serializable {

    private static final Log log = LogFactory.getLog(SerializableTexturePaint.class);

  static final long serialVersionUID = 3377875007493302352L;

    private String image;
    private int width;
    private int height;
    private transient Paint paint = null;

    public SerializableTexturePaint() {
    }

    /** Creates a new instance of SerializableGradientPaint */
    public SerializableTexturePaint(String image, int width, int height) {
        this.image = image;
        this.width = width;
        this.height = height;
    }

    private Paint getPaint() {
        if (paint == null) {
            createPaint();
        }
        return paint;
    }

    private void createPaint() {
    try {
      BufferedImage bim = ImageIO.read(new File(image));
      Rectangle rect = new Rectangle(width, height);
      paint = new TexturePaint(bim, rect);
    } catch (IOException ioex) {
      log.error("SerializableTexturePaint.createPaint: "+ioex.getMessage());
    }
    }

    public java.awt.PaintContext createContext (ColorModel colorModel, Rectangle rectangle,
      Rectangle2D rectangle2D, AffineTransform affineTransform, RenderingHints renderingHints) {
    if (renderingHints == null)
      renderingHints = new RenderingHints(null);
        return getPaint().createContext(colorModel, rectangle, rectangle2D, affineTransform, renderingHints);
    }

    public int getTransparency() {
        return getPaint().getTransparency();
    }

}
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