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Diffstat (limited to 'libjava/java/awt/image/MemoryImageSource.java')
-rw-r--r-- | libjava/java/awt/image/MemoryImageSource.java | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/libjava/java/awt/image/MemoryImageSource.java b/libjava/java/awt/image/MemoryImageSource.java new file mode 100644 index 00000000000..fce112a0656 --- /dev/null +++ b/libjava/java/awt/image/MemoryImageSource.java @@ -0,0 +1,333 @@ +/* MemoryImageSource.java -- Java class for providing image data + Copyright (C) 1999 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.awt.Image; +import java.util.Enumeration; +import java.util.Hashtable; + +public class MemoryImageSource implements ImageProducer +{ + private boolean animated = false; + private boolean fullbuffers = false; + private int pixeli[], width, height, offset, scansize; + private byte pixelb[]; + private ColorModel cm; + private Hashtable props, consumers = new Hashtable(); + + /** + Constructs an ImageProducer from memory + */ + 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 = new byte[ max * height ]; + System.arraycopy( pix, 0, pixelb, 0, max ); + } + /** + Constructs an ImageProducer from memory + */ + 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 = new int[ max * height ]; + System.arraycopy( pix, 0, pixeli, 0, max ); + } + /** + 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, + byte 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.containsKey(ic)) + return; + + consumers.put(ic, 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.containsKey(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.remove(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.containsKey(ic))) { + consumers.put(ic, ic); + } + Enumeration e = consumers.elements(); + for( ; e.hasMoreElements(); ) { + ic = (ImageConsumer)e.nextElement(); + sendPicture( ic ); + ic.imageComplete( ImageConsumer.SINGLEFRAME ); + } + + } + + /** + * 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; + Enumeration e = consumers.elements(); + for( ; e.hasMoreElements(); ) { + ic = (ImageConsumer)e.nextElement(); + sendPicture( ic ); + ic.imageComplete( ImageConsumer.SINGLEFRAME ); + } + } + } + + + private void sendPicture ( ImageConsumer ic ) + { + ic.setHints( ImageConsumer.TOPDOWNLEFTRIGHT ); + if( props != null ) { + ic.setProperties( props ); + } + 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; + Enumeration e = consumers.elements(); + for( ; e.hasMoreElements(); ) { + ic = (ImageConsumer)e.nextElement(); + ic.setHints( ImageConsumer.TOPDOWNLEFTRIGHT ); + if( props != null ) { + ic.setProperties( props ); + } + if( pixeli != null ) { + ic.setPixels( 0, 0, width, height, cm, pixeli, offset, scansize ); + } else { + ic.setPixels( 0, 0, width, height, cm, pixelb, offset, scansize ); + } + 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; + Enumeration e = consumers.elements(); + for( ; e.hasMoreElements(); ) { + ic = (ImageConsumer)e.nextElement(); + ic.setHints( ImageConsumer.TOPDOWNLEFTRIGHT ); + if( props != null ) { + ic.setProperties( props ); + } + if( pixeli != null ) { + ic.setPixels( 0, 0, width, height, cm, pixeli, offset, scansize ); + } else { + ic.setPixels( 0, 0, width, height, cm, pixelb, offset, scansize ); + } + if( framenotify == true ) + ic.imageComplete( ImageConsumer.SINGLEFRAME ); + } + } + } + } + + public synchronized void newPixels(byte newpix[], + ColorModel newmodel, + int offset, + int scansize) + + { + if( animated == true ) + { + //FIXME + } + } + + public synchronized void newPixels(int newpix[], + ColorModel newmodel, + int offset, + int scansize) + + { + if( animated == true ) + { + //FIXME + } + } + +} |