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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [gnu/] [java/] [awt/] [peer/] [qt/] [QtImageConsumer.java] - Blame information for rev 769

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1 769 jeremybenn
/* QtImageConsumer.java --
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   Copyright (C)  2005, 2006  Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING.  If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library.  Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module.  An independent module is a module which is not derived from
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or based on this library.  If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so.  If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.awt.peer.qt;
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import java.awt.image.ColorModel;
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import java.awt.image.ImageConsumer;
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import java.awt.image.ImageProducer;
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import java.util.Hashtable;
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/**
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 * Helper class to QtImage. Sits and gathers pixels for a QtImage and then
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 * calls QtImage.setImage().
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 *
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 * @author Sven de Marothy
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 */
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public class QtImageConsumer implements ImageConsumer
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{
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  private QtImage target;
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  private int width, height;
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  private Hashtable properties;
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  private int[] pixelCache = null;
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  private ImageProducer source;
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  public QtImageConsumer(QtImage target, ImageProducer source)
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  {
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    this.target = target;
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    this.source = source;
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  }
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  public synchronized void imageComplete (int status)
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  {
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    source.removeConsumer(this);
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    target.setImage(width, height, pixelCache, properties);
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  }
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  public synchronized void setColorModel (ColorModel model)
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  {
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    // This method is to inform on what the most used color model
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    // in the image is, for optimization reasons. We ignore this
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    // information.
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  }
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  public synchronized void setDimensions (int width, int height)
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  {
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    pixelCache = new int[width*height];
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    this.width = width;
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    this.height = height;
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  }
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  public synchronized void setHints (int flags)
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  {
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    // This method informs us in which order the pixels are
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    // delivered, for progressive-loading support, etc.
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    // Since we wait until it's all loaded, we can ignore the hints.
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  }
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  public synchronized void setPixels (int x, int y, int width, int height,
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                                      ColorModel cm, byte[] pixels,
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                                      int offset, int scansize)
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  {
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    setPixels (x, y, width, height, cm, convertPixels (pixels), offset,
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               scansize);
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  }
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  public synchronized void setPixels (int x, int y, int width, int height,
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                                      ColorModel cm, int[] pixels,
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                                      int offset, int scansize)
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  {
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    if (pixelCache == null)
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      return; // Not sure this should ever happen.
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    if (cm.equals(QtImage.nativeModel))
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      for (int i = 0; i < height; i++)
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        System.arraycopy (pixels, offset + (i * scansize),
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                          pixelCache, (y + i) * this.width + x,
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                          width);
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    else
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      {
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        for (int i = 0; i < height; i++)
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          for (int j = 0; j < width; j++)
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            {
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              // get in AARRGGBB and convert to AABBGGRR
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              int pix = cm.getRGB(pixels[offset + (i * scansize) + x + j]);
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              byte b = (byte)(pix & 0xFF);
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              byte r = (byte)(((pix & 0x00FF0000) >> 16) & 0xFF);
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              pix &= 0xFF00FF00;
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              pix |= ((b & 0xFF) << 16);
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              pix |= (r & 0xFF);
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              pixelCache[(y + i) * this.width + x + j] = pix;
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            }
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      }
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  }
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  /**
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   * This is an old method, no idea if it's correct.
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   */
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  private int[] convertPixels (byte[] pixels)
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  {
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    int ret[] = new int[pixels.length];
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    for (int i = 0; i < pixels.length; i++)
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      ret[i] = pixels[i] & 0xFF;
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    return ret;
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  }
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  public synchronized void setProperties (Hashtable props)
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  {
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    this.properties = props;
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  }
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}

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