llvm-gcc-4.0/libjava/java/awt/image/MemoryImageSource.java - llvm-archive - Git at Google

 /* MemoryImageSource.java -- Java class for providing image data
    Copyright (C) 1999, 2004  Free Software Foundation, Inc.

 This file is part of GNU Classpath.

 GNU Classpath 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, or (at your option)
 any later version.

 GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 02111-1307 USA.

 Linking this library statically or dynamically with other modules is
 making a combined work based on this library.  Thus, the terms and
 conditions of the GNU General Public License cover the whole
 combination.

 As a special exception, the copyright holders of this library give you
 permission to link this library with independent modules to produce an
 executable, regardless of the license terms of these independent
 modules, and to copy and distribute the resulting executable under
 terms of your choice, provided that you also meet, for each linked
 independent module, the terms and conditions of the license of that
 module.  An independent module is a module which is not derived from
 or based on this library.  If you modify this library, you may extend
 this exception to your version of the library, but you are not
 obligated to do so.  If you do not wish to do so, delete this
 exception statement from your version. */


 package java.awt.image;

 import java.util.Hashtable;
 import java.util.Vector;

 public class MemoryImageSource implements ImageProducer
 {
   private boolean animated = false;
   private boolean fullbuffers = false;
   private int[] pixeli;
   private int width;
   private int height;
   private int offset;
   private int scansize;
   private byte[] pixelb;
   private ColorModel cm;
   private Hashtable props = new Hashtable();
   private Vector consumers = new Vector();

   /**
    * Construct an image producer that reads image data from a byte
    * array.
    *
    * @param w width of image
    * @param h height of image
    * @param cm the color model used to represent pixel values
    * @param pix a byte array of pixel values
    * @param off the offset into the array at which the first pixel is stored
    * @param scan the number of array elements that represents a single pixel row
    */
   public MemoryImageSource(int w, int h, ColorModel cm, byte[] pix, int off,
                            int scan)
   {
     this(w, h, cm, pix, off, scan, null);
   }

   /**
    * Constructs an ImageProducer from memory
    */
   public MemoryImageSource(int w, int h, ColorModel cm, byte[] pix, int off,
                            int scan, Hashtable props)
   {
     width = w;
     height = h;
     this.cm = cm;
     offset = off;
     scansize = scan;
     this.props = props;
     int max = ((scansize > width) ? scansize : width);
     pixelb = pix;
   }

   /**
    * Construct an image producer that reads image data from an
    * integer array.
    *
    * @param w width of image
    * @param h height of image
    * @param cm the color model used to represent pixel values
    * @param pix an integer array of pixel values
    * @param off the offset into the array at which the first pixel is stored
    * @param scan the number of array elements that represents a single pixel row
    */
   public MemoryImageSource(int w, int h, ColorModel cm, int[] pix, int off,
                            int scan)
   {
     this(w, h, cm, pix, off, scan, null);
   }

   /**
      Constructs an ImageProducer from memory
   */
   public MemoryImageSource(int w, int h, ColorModel cm, int[] pix, int off,
                            int scan, Hashtable props)
   {
     width = w;
     height = h;
     this.cm = cm;
     offset = off;
     scansize = scan;
     this.props = props;
     int max = ((scansize > width) ? scansize : width);
     pixeli = pix;
   }

   /**
    * Constructs an ImageProducer from memory using the default RGB ColorModel
    */
   public MemoryImageSource(int w, int h, int[] pix, int off, int scan,
                            Hashtable props)
   {
     this(w, h, ColorModel.getRGBdefault(), pix, off, scan, props);
   }

   /**
    * Constructs an ImageProducer from memory using the default RGB ColorModel
    */
   public MemoryImageSource(int w, int h, int[] pix, int off, int scan)
   {
     this(w, h, ColorModel.getRGBdefault(), pix, off, scan, null);
   }

   /**
    * Used to register an <code>ImageConsumer</code> with this
    * <code>ImageProducer</code>.
    */
   public synchronized void addConsumer(ImageConsumer ic)
   {
     if (consumers.contains(ic))
       return;

     consumers.addElement(ic);
   }

   /**
    * Used to determine if the given <code>ImageConsumer</code> is
    * already registered with this <code>ImageProducer</code>.
    */
   public synchronized boolean isConsumer(ImageConsumer ic)
   {
     if (consumers.contains(ic))
       return true;
     return false;
   }

   /**
    * Used to remove an <code>ImageConsumer</code> from the list of
    * registered consumers for this <code>ImageProducer</code>.
    */
   public synchronized void removeConsumer(ImageConsumer ic)
   {
     consumers.removeElement(ic);
   }

   /**
    * Used to register an <code>ImageConsumer</code> with this
    * <code>ImageProducer</code> and then immediately start
    * reconstruction of the image data to be delivered to all
    * registered consumers.
    */
   public void startProduction(ImageConsumer ic)
   {
     if (! (consumers.contains(ic)))
       consumers.addElement(ic);

     Vector list = (Vector) consumers.clone();
     for (int i = 0; i < list.size(); i++)
       {
 	ic = (ImageConsumer) list.elementAt(i);
 	sendPicture(ic);
 	if (animated)
 	  ic.imageComplete(ImageConsumer.SINGLEFRAME);
 	else
 	  ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
       }
   }

   /**
    * Used to register an <code>ImageConsumer</code> with this
    * <code>ImageProducer</code> and then request that this producer
    * resend the image data in the order top-down, left-right.
    */
   public void requestTopDownLeftRightResend(ImageConsumer ic)
   {
     startProduction(ic);
   }

   /**
    * Changes a flag to indicate whether this MemoryImageSource supports
    * animations.
    *
    * @param animated A flag indicating whether this class supports animations
    */
   public synchronized void setAnimated(boolean animated)
   {
     this.animated = animated;
   }

   /**
    * A flag to indicate whether or not to send full buffer updates when
    * sending animation. If this flag is set then full buffers are sent
    * in the newPixels methods instead of just regions.
    *
    * @param fullbuffers - a flag indicating whether to send the full buffers
    */
   public synchronized void setFullBufferUpdates(boolean fullbuffers)
   {
     this.fullbuffers = fullbuffers;
   }

   /**
    * Send an animation frame to the image consumers.
    */
   public void newPixels()
   {
     if (animated == true)
       {
 	ImageConsumer ic;
 	Vector list = (Vector) consumers.clone();
 	for (int i = 0; i < list.size(); i++)
 	  {
 	    ic = (ImageConsumer) list.elementAt(i);
 	    sendPicture(ic);
 	    ic.imageComplete(ImageConsumer.SINGLEFRAME);
 	  }
       }
   }

   private void sendPicture(ImageConsumer ic)
   {
     ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT);
     if (props != null)
       ic.setProperties(props);
     ic.setDimensions(width, height);
     ic.setColorModel(cm);
     if (pixeli != null)
       ic.setPixels(0, 0, width, height, cm, pixeli, offset, scansize);
     else
       ic.setPixels(0, 0, width, height, cm, pixelb, offset, scansize);
   }

   /**
    * Send an animation frame to the image consumers containing the specified
    * pixels unless setFullBufferUpdates is set.
    */
   public synchronized void newPixels(int x, int y, int w, int h)
   {
     if (animated == true)
       {
 	if (fullbuffers)
 	  newPixels();
 	else
 	  {
 	    ImageConsumer ic;
 	    Vector list = (Vector) consumers.clone();
 	    for (int i = 0; i < list.size(); i++)
 	      {
 		ic = (ImageConsumer) list.elementAt(i);
 		ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT);
 		if (props != null)
 		  ic.setProperties(props);
 		if (pixeli != null)
 		  {
 		    int[] pixelbuf = new int[w * h];
 		    for (int row = y; row < y + h; row++)
 		      System.arraycopy(pixeli, row * scansize + x + offset,
 		                       pixelbuf, 0, w * h);
 		    ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
 		  }
 		else
 		  {
 		    byte[] pixelbuf = new byte[w * h];
 		    for (int row = y; row < y + h; row++)
 		      System.arraycopy(pixelb, row * scansize + x + offset,
 		                       pixelbuf, 0, w * h);

 		    ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
 		  }
 		ic.imageComplete(ImageConsumer.SINGLEFRAME);
 	      }
 	  }
       }
   }

   /**
    * Send an animation frame to the image consumers containing the specified
    * pixels unless setFullBufferUpdates is set.
    *
    * If framenotify is set then a notification is sent when the frame
    * is sent otherwise no status is sent.
    */
   public synchronized void newPixels(int x, int y, int w, int h,
                                      boolean framenotify)
   {
     if (animated == true)
       {
 	if (fullbuffers)
 	  newPixels();
 	else
 	  {
 	    ImageConsumer ic;
 	    Vector list = (Vector) consumers.clone();
 	    for (int i = 0; i < list.size(); i++)
 	      {
 		ic = (ImageConsumer) list.elementAt(i);
 		ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT);
 		if (props != null)
 		  ic.setProperties(props);
 		if (pixeli != null)
 		  {
 		    int[] pixelbuf = new int[w * h];
 		    for (int row = y; row < y + h; row++)
 		      System.arraycopy(pixeli, row * scansize + x + offset,
 		                       pixelbuf, 0, w * h);
 		    ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
 		  }
 		else
 		  {
 		    byte[] pixelbuf = new byte[w * h];
 		    for (int row = y; row < y + h; row++)
 		      System.arraycopy(pixelb, row * scansize + x + offset,
 		                       pixelbuf, 0, w * h);
 		    ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
 		  }
 		if (framenotify == true)
 		  ic.imageComplete(ImageConsumer.SINGLEFRAME);
 	      }
 	  }
       }
   }

   public synchronized void newPixels(byte[] newpix, ColorModel newmodel,
                                      int offset, int scansize)
   {
     pixeli = null;
     pixelb = newpix;
     cm = newmodel;
     this.offset = offset;
     this.scansize = scansize;
     if (animated == true)
       newPixels();
   }

   public synchronized void newPixels(int[] newpix, ColorModel newmodel,
                                      int offset, int scansize)
   {
     pixelb = null;
     pixeli = newpix;
     cm = newmodel;
     this.offset = offset;
     this.scansize = scansize;
     if (animated == true)
       newPixels();
   }
 }
	/* MemoryImageSource.java -- Java class for providing image data
	Copyright (C) 1999, 2004 Free Software Foundation, Inc.

	This file is part of GNU Classpath.

	GNU Classpath 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, or (at your option)
	any later version.

	GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
	Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	02111-1307 USA.

	Linking this library statically or dynamically with other modules is
	making a combined work based on this library. Thus, the terms and
	conditions of the GNU General Public License cover the whole
	combination.

	As a special exception, the copyright holders of this library give you
	permission to link this library with independent modules to produce an
	executable, regardless of the license terms of these independent
	modules, and to copy and distribute the resulting executable under
	terms of your choice, provided that you also meet, for each linked
	independent module, the terms and conditions of the license of that
	module. An independent module is a module which is not derived from
	or based on this library. If you modify this library, you may extend
	this exception to your version of the library, but you are not
	obligated to do so. If you do not wish to do so, delete this
	exception statement from your version. */


	package java.awt.image;

	import java.util.Hashtable;
	import java.util.Vector;

	public class MemoryImageSource implements ImageProducer
	{
	private boolean animated = false;
	private boolean fullbuffers = false;
	private int[] pixeli;
	private int width;
	private int height;
	private int offset;
	private int scansize;
	private byte[] pixelb;
	private ColorModel cm;
	private Hashtable props = new Hashtable();
	private Vector consumers = new Vector();

	/**
	* Construct an image producer that reads image data from a byte
	* array.
	*
	* @param w width of image
	* @param h height of image
	* @param cm the color model used to represent pixel values
	* @param pix a byte array of pixel values
	* @param off the offset into the array at which the first pixel is stored
	* @param scan the number of array elements that represents a single pixel row
	*/
	public MemoryImageSource(int w, int h, ColorModel cm, byte[] pix, int off,
	int scan)
	{
	this(w, h, cm, pix, off, scan, null);
	}

	/**
	* Constructs an ImageProducer from memory
	*/
	public MemoryImageSource(int w, int h, ColorModel cm, byte[] pix, int off,
	int scan, Hashtable props)
	{
	width = w;
	height = h;
	this.cm = cm;
	offset = off;
	scansize = scan;
	this.props = props;
	int max = ((scansize > width) ? scansize : width);
	pixelb = pix;
	}

	/**
	* Construct an image producer that reads image data from an
	* integer array.
	*
	* @param w width of image
	* @param h height of image
	* @param cm the color model used to represent pixel values
	* @param pix an integer array of pixel values
	* @param off the offset into the array at which the first pixel is stored
	* @param scan the number of array elements that represents a single pixel row
	*/
	public MemoryImageSource(int w, int h, ColorModel cm, int[] pix, int off,
	int scan)
	{
	this(w, h, cm, pix, off, scan, null);
	}

	/**
	Constructs an ImageProducer from memory
	*/
	public MemoryImageSource(int w, int h, ColorModel cm, int[] pix, int off,
	int scan, Hashtable props)
	{
	width = w;
	height = h;
	this.cm = cm;
	offset = off;
	scansize = scan;
	this.props = props;
	int max = ((scansize > width) ? scansize : width);
	pixeli = pix;
	}

	/**
	* Constructs an ImageProducer from memory using the default RGB ColorModel
	*/
	public MemoryImageSource(int w, int h, int[] pix, int off, int scan,
	Hashtable props)
	{
	this(w, h, ColorModel.getRGBdefault(), pix, off, scan, props);
	}

	/**
	* Constructs an ImageProducer from memory using the default RGB ColorModel
	*/
	public MemoryImageSource(int w, int h, int[] pix, int off, int scan)
	{
	this(w, h, ColorModel.getRGBdefault(), pix, off, scan, null);
	}

	/**
	* Used to register an <code>ImageConsumer</code> with this
	* <code>ImageProducer</code>.
	*/
	public synchronized void addConsumer(ImageConsumer ic)
	{
	if (consumers.contains(ic))
	return;

	consumers.addElement(ic);
	}

	/**
	* Used to determine if the given <code>ImageConsumer</code> is
	* already registered with this <code>ImageProducer</code>.
	*/
	public synchronized boolean isConsumer(ImageConsumer ic)
	{
	if (consumers.contains(ic))
	return true;
	return false;
	}

	/**
	* Used to remove an <code>ImageConsumer</code> from the list of
	* registered consumers for this <code>ImageProducer</code>.
	*/
	public synchronized void removeConsumer(ImageConsumer ic)
	{
	consumers.removeElement(ic);
	}

	/**
	* Used to register an <code>ImageConsumer</code> with this
	* <code>ImageProducer</code> and then immediately start
	* reconstruction of the image data to be delivered to all
	* registered consumers.
	*/
	public void startProduction(ImageConsumer ic)
	{
	if (! (consumers.contains(ic)))
	consumers.addElement(ic);

	Vector list = (Vector) consumers.clone();
	for (int i = 0; i < list.size(); i++)
	{
	ic = (ImageConsumer) list.elementAt(i);
	sendPicture(ic);
	if (animated)
	ic.imageComplete(ImageConsumer.SINGLEFRAME);
	else
	ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
	}
	}

	/**
	* Used to register an <code>ImageConsumer</code> with this
	* <code>ImageProducer</code> and then request that this producer
	* resend the image data in the order top-down, left-right.
	*/
	public void requestTopDownLeftRightResend(ImageConsumer ic)
	{
	startProduction(ic);
	}

	/**
	* Changes a flag to indicate whether this MemoryImageSource supports
	* animations.
	*
	* @param animated A flag indicating whether this class supports animations
	*/
	public synchronized void setAnimated(boolean animated)
	{
	this.animated = animated;
	}

	/**
	* A flag to indicate whether or not to send full buffer updates when
	* sending animation. If this flag is set then full buffers are sent
	* in the newPixels methods instead of just regions.
	*
	* @param fullbuffers - a flag indicating whether to send the full buffers
	*/
	public synchronized void setFullBufferUpdates(boolean fullbuffers)
	{
	this.fullbuffers = fullbuffers;
	}

	/**
	* Send an animation frame to the image consumers.
	*/
	public void newPixels()
	{
	if (animated == true)
	{
	ImageConsumer ic;
	Vector list = (Vector) consumers.clone();
	for (int i = 0; i < list.size(); i++)
	{
	ic = (ImageConsumer) list.elementAt(i);
	sendPicture(ic);
	ic.imageComplete(ImageConsumer.SINGLEFRAME);
	}
	}
	}

	private void sendPicture(ImageConsumer ic)
	{
	ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT);
	if (props != null)
	ic.setProperties(props);
	ic.setDimensions(width, height);
	ic.setColorModel(cm);
	if (pixeli != null)
	ic.setPixels(0, 0, width, height, cm, pixeli, offset, scansize);
	else
	ic.setPixels(0, 0, width, height, cm, pixelb, offset, scansize);
	}

	/**
	* Send an animation frame to the image consumers containing the specified
	* pixels unless setFullBufferUpdates is set.
	*/
	public synchronized void newPixels(int x, int y, int w, int h)
	{
	if (animated == true)
	{
	if (fullbuffers)
	newPixels();
	else
	{
	ImageConsumer ic;
	Vector list = (Vector) consumers.clone();
	for (int i = 0; i < list.size(); i++)
	{
	ic = (ImageConsumer) list.elementAt(i);
	ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT);
	if (props != null)
	ic.setProperties(props);
	if (pixeli != null)
	{
	int[] pixelbuf = new int[w * h];
	for (int row = y; row < y + h; row++)
	System.arraycopy(pixeli, row * scansize + x + offset,
	pixelbuf, 0, w * h);
	ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
	}
	else
	{
	byte[] pixelbuf = new byte[w * h];
	for (int row = y; row < y + h; row++)
	System.arraycopy(pixelb, row * scansize + x + offset,
	pixelbuf, 0, w * h);

	ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
	}
	ic.imageComplete(ImageConsumer.SINGLEFRAME);
	}
	}
	}
	}

	/**
	* Send an animation frame to the image consumers containing the specified
	* pixels unless setFullBufferUpdates is set.
	*
	* If framenotify is set then a notification is sent when the frame
	* is sent otherwise no status is sent.
	*/
	public synchronized void newPixels(int x, int y, int w, int h,
	boolean framenotify)
	{
	if (animated == true)
	{
	if (fullbuffers)
	newPixels();
	else
	{
	ImageConsumer ic;
	Vector list = (Vector) consumers.clone();
	for (int i = 0; i < list.size(); i++)
	{
	ic = (ImageConsumer) list.elementAt(i);
	ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT);
	if (props != null)
	ic.setProperties(props);
	if (pixeli != null)
	{
	int[] pixelbuf = new int[w * h];
	for (int row = y; row < y + h; row++)
	System.arraycopy(pixeli, row * scansize + x + offset,
	pixelbuf, 0, w * h);
	ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
	}
	else
	{
	byte[] pixelbuf = new byte[w * h];
	for (int row = y; row < y + h; row++)
	System.arraycopy(pixelb, row * scansize + x + offset,
	pixelbuf, 0, w * h);
	ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w);
	}
	if (framenotify == true)
	ic.imageComplete(ImageConsumer.SINGLEFRAME);
	}
	}
	}
	}

	public synchronized void newPixels(byte[] newpix, ColorModel newmodel,
	int offset, int scansize)
	{
	pixeli = null;
	pixelb = newpix;
	cm = newmodel;
	this.offset = offset;
	this.scansize = scansize;
	if (animated == true)
	newPixels();
	}

	public synchronized void newPixels(int[] newpix, ColorModel newmodel,
	int offset, int scansize)
	{
	pixelb = null;
	pixeli = newpix;
	cm = newmodel;
	this.offset = offset;
	this.scansize = scansize;
	if (animated == true)
	newPixels();
	}
	}