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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image/MemoryImageSource.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/image/MemoryImageSource.java')
-rw-r--r-- | libjava/classpath/java/awt/image/MemoryImageSource.java | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/image/MemoryImageSource.java b/libjava/classpath/java/awt/image/MemoryImageSource.java new file mode 100644 index 000000000..e8780f6f5 --- /dev/null +++ b/libjava/classpath/java/awt/image/MemoryImageSource.java @@ -0,0 +1,429 @@ +/* MemoryImageSource.java -- Java class for providing image data + Copyright (C) 1999, 2004, 2006, 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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 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; + +/** + * An image producer that delivers image data from an array. + */ +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. + * + * @param w the image width. + * @param h the image height. + * @param cm the color model. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + * @param props image properties (<code>null</code> permitted). + */ + 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 + * + * @param w the image width. + * @param h the image height. + * @param cm the color model. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + * @param props image properties (<code>null</code> permitted). + */ + 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. + * + * @param w the image width. + * @param h the image height. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + * @param props image properties (<code>null</code> permitted). + + */ + 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. + * + * @param w the image width. + * @param h the image height. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + */ + 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>. + * + * @param ic the image consumer. + */ + 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>. + * + * @param ic the image consumer. + */ + 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>. + * + * @param ic the image consumer. + */ + 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.SINGLEFRAMEDONE); + 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. + * + * @param ic the image consumer. + */ + 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. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param w the width. + * @param h the height. + */ + 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. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param w the width. + * @param h the height. + * @param framenotify send notification? + */ + 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(); + } +} |