| /* PixmapVolatileImage.java -- VolatileImage implementation around a Pixmap |
| Copyright (C) 2007 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.x; |
| |
| import gnu.x11.GC; |
| import gnu.x11.Pixmap; |
| import gnu.x11.image.Image; |
| import gnu.x11.image.ZPixmap; |
| |
| import java.awt.Graphics2D; |
| import java.awt.GraphicsConfiguration; |
| import java.awt.GraphicsEnvironment; |
| import java.awt.ImageCapabilities; |
| import java.awt.Point; |
| import java.awt.Transparency; |
| import java.awt.color.ColorSpace; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ColorModel; |
| import java.awt.image.ComponentColorModel; |
| import java.awt.image.ComponentSampleModel; |
| import java.awt.image.DataBuffer; |
| import java.awt.image.ImageObserver; |
| import java.awt.image.Raster; |
| import java.awt.image.SampleModel; |
| import java.awt.image.VolatileImage; |
| import java.awt.image.WritableRaster; |
| |
| /** |
| * A {@link VolatileImage} implementation that wraps an X Pixmap. |
| */ |
| class PixmapVolatileImage |
| extends VolatileImage |
| { |
| |
| /** |
| * The shared capabilities instance. |
| */ |
| private static final ImageCapabilities caps = new ImageCapabilities(true); |
| |
| /** |
| * The underlying pixmap. |
| */ |
| private Pixmap pixmap; |
| |
| /** |
| * Creates a new PixmapVolatileImage. |
| * |
| * @param w the width of the image |
| * @param h the height of the image |
| */ |
| public PixmapVolatileImage(int w, int h) |
| { |
| GraphicsEnvironment env = |
| GraphicsEnvironment.getLocalGraphicsEnvironment(); |
| XGraphicsDevice dev = (XGraphicsDevice) env.getDefaultScreenDevice(); |
| pixmap = new Pixmap(dev.getDisplay(), w, h); |
| |
| // Clear pixmap. |
| GC gc = new GC(pixmap); |
| gc.set_foreground(0xffffffff); |
| pixmap.fill_rectangle(gc, 0, 0, w, h); |
| |
| } |
| |
| @Override |
| public boolean contentsLost() |
| { |
| return false; |
| } |
| |
| @Override |
| public Graphics2D createGraphics() |
| { |
| return new XGraphics2D(pixmap); |
| } |
| |
| @Override |
| public ImageCapabilities getCapabilities() |
| { |
| return caps; |
| } |
| |
| @Override |
| public int getHeight() |
| { |
| return pixmap.height; |
| } |
| |
| @Override |
| public BufferedImage getSnapshot() |
| { |
| // TODO: Support non-24-bit resolutions. |
| int w = pixmap.width; |
| int h = pixmap.height; |
| ZPixmap zpixmap = (ZPixmap) pixmap.image(0, 0, w, h, 0xffffffff, |
| Image.Format.ZPIXMAP); |
| DataBuffer buffer = new ZPixmapDataBuffer(zpixmap); |
| SampleModel sm = new ComponentSampleModel(DataBuffer.TYPE_BYTE, w, h, 4, |
| w * 4, |
| new int[]{0, 1, 2, 3 }); |
| ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_LINEAR_RGB); |
| ColorModel cm = new ComponentColorModel(cs, true, false, |
| Transparency.OPAQUE, |
| DataBuffer.TYPE_BYTE); |
| WritableRaster raster = Raster.createWritableRaster(sm, buffer, |
| new Point(0, 0)); |
| return new BufferedImage(cm, raster, false, null); |
| } |
| |
| @Override |
| public int getWidth() |
| { |
| return pixmap.width; |
| } |
| |
| @Override |
| public int validate(GraphicsConfiguration gc) |
| { |
| // TODO: Check compatibility with gc. |
| return IMAGE_OK; |
| } |
| |
| @Override |
| public int getHeight(ImageObserver observer) |
| { |
| return getHeight(); |
| } |
| |
| @Override |
| public Object getProperty(String name, ImageObserver observer) |
| { |
| return null; |
| } |
| |
| @Override |
| public int getWidth(ImageObserver observer) |
| { |
| return getWidth(); |
| } |
| |
| /** |
| * Returns the underlying X pixmap. This is used for the graphics code. |
| * |
| * @return the underlying X pixmap |
| */ |
| Pixmap getPixmap() |
| { |
| return pixmap; |
| } |
| } |