| /* GtkImageConsumer.java |
| Copyright (C) 2005, 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 gnu.java.awt.peer.gtk; |
| |
| import java.awt.image.ColorModel; |
| import java.awt.image.ImageConsumer; |
| import java.awt.image.ImageProducer; |
| import java.awt.image.MemoryImageSource; |
| import java.util.Hashtable; |
| |
| /** |
| * Helper class to GtkImage. Sits and gathers pixels for a GtkImage and then |
| * calls GtkImage.setImage(). |
| * |
| * @author Sven de Marothy |
| */ |
| public class GtkImageConsumer implements ImageConsumer |
| { |
| private GtkImage target; |
| private int width, height; |
| private Hashtable properties; |
| private int[] pixelCache = null; |
| private ImageProducer source; |
| |
| public GtkImageConsumer(GtkImage target, ImageProducer source) |
| { |
| this.target = target; |
| this.source = source; |
| } |
| |
| public synchronized void imageComplete (int status) |
| { |
| // we need to reuse the pixel cache for memory image sources since |
| // a memory image's backing array can be updated "live". |
| if (!(source instanceof MemoryImageSource)) |
| source.removeConsumer(this); |
| target.setImage(width, height, pixelCache, properties); |
| } |
| |
| public synchronized void setColorModel (ColorModel model) |
| { |
| // This method is to inform on what the most used color model |
| // in the image is, for optimization reasons. We ignore this |
| // information. |
| } |
| |
| public synchronized void setDimensions (int width, int height) |
| { |
| pixelCache = new int[width*height]; |
| |
| this.width = width; |
| this.height = height; |
| } |
| |
| public synchronized void setHints (int flags) |
| { |
| // This method informs us in which order the pixels are |
| // delivered, for progressive-loading support, etc. |
| // Since we wait until it's all loaded, we can ignore the hints. |
| } |
| |
| public synchronized void setPixels (int x, int y, int width, int height, |
| ColorModel cm, byte[] pixels, |
| int offset, int scansize) |
| { |
| setPixels (x, y, width, height, cm, convertPixels (pixels), offset, |
| scansize); |
| } |
| |
| public synchronized void setPixels (int x, int y, int width, int height, |
| ColorModel cm, int[] pixels, |
| int offset, int scansize) |
| { |
| if (pixelCache == null) |
| return; // Not sure this should ever happen. |
| |
| if (cm.equals(GtkImage.nativeModel)) |
| for (int i = 0; i < height; i++) |
| System.arraycopy (pixels, offset + (i * scansize), |
| pixelCache, (y + i) * this.width + x, |
| width); |
| else |
| { |
| for (int i = 0; i < height; i++) |
| for (int j = 0; j < width; j++) |
| { |
| // get in AARRGGBB and convert to AABBGGRR |
| int pix = cm.getRGB(pixels[offset + (i * scansize) + x + j]); |
| byte b = (byte)(pix & 0xFF); |
| byte r = (byte)(((pix & 0x00FF0000) >> 16) & 0xFF); |
| pix &= 0xFF00FF00; |
| pix |= ((b & 0xFF) << 16); |
| pix |= (r & 0xFF); |
| pixelCache[(y + i) * this.width + x + j] = pix; |
| } |
| } |
| } |
| |
| /** |
| * This is an old method, no idea if it's correct. |
| */ |
| private int[] convertPixels (byte[] pixels) |
| { |
| int ret[] = new int[pixels.length]; |
| |
| for (int i = 0; i < pixels.length; i++) |
| ret[i] = pixels[i] & 0xFF; |
| |
| return ret; |
| } |
| |
| public synchronized void setProperties (Hashtable props) |
| { |
| this.properties = props; |
| } |
| } |
| |
| |