| /* XGraphicsDevice.java -- GraphicsDevice for X |
| Copyright (C) 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.x; |
| |
| import gnu.classpath.SystemProperties; |
| import gnu.x11.Display; |
| |
| import java.awt.GraphicsConfiguration; |
| import java.awt.GraphicsDevice; |
| import java.lang.reflect.Constructor; |
| import java.net.Socket; |
| |
| /** |
| * This class represents an X Display. The actual connection is established |
| * lazily when it is first needed. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| public class XGraphicsDevice |
| extends GraphicsDevice |
| { |
| |
| private XGraphicsConfiguration defaultConfiguration; |
| |
| /** |
| * The X display associated with the XGraphicsDevice. This is established |
| * when {@link #getDisplay} is first called. |
| */ |
| private Display display; |
| |
| /** |
| * The display name from which the display will be initialized. |
| */ |
| private Display.Name displayName; |
| |
| /** |
| * The event pump for this X Display. |
| */ |
| private XEventPump eventPump; |
| |
| /** |
| * Creates a new XGraphicsDevice. |
| */ |
| XGraphicsDevice(Display.Name dn) |
| { |
| displayName = dn; |
| } |
| |
| public int getType() |
| { |
| return TYPE_RASTER_SCREEN; |
| } |
| |
| public String getIDstring() |
| { |
| // TODO: Implement this. |
| throw new UnsupportedOperationException("Not yet implemented."); |
| } |
| |
| public GraphicsConfiguration[] getConfigurations() |
| { |
| // TODO: Implement this. |
| throw new UnsupportedOperationException("Not yet implemented."); |
| } |
| |
| public GraphicsConfiguration getDefaultConfiguration() |
| { |
| if (defaultConfiguration == null) |
| defaultConfiguration = new XGraphicsConfiguration(this); |
| return defaultConfiguration; |
| } |
| |
| /** |
| * Returns the X Display associated with this XGraphicsDevice. |
| * This establishes the connection to the X server on the first invocation. |
| * |
| * @return the X Display associated with this XGraphicsDevice |
| */ |
| Display getDisplay() |
| { |
| if (display == null) |
| { |
| if (displayName.hostname.equals("")) |
| displayName.hostname = "localhost"; |
| if (XToolkit.DEBUG) |
| System.err.println("connecting to : " + displayName); |
| // Try to connect via unix domain sockets when host == localhost. |
| if ((displayName.hostname.equals("localhost") |
| || displayName.hostname.equals("")) |
| && SystemProperties.getProperty("gnu.xawt.no_local_sockets") == null) |
| { |
| Socket socket = createLocalSocket(); |
| if (socket != null) |
| { |
| display = new Display(socket, "localhost", |
| displayName.display_no, |
| displayName.screen_no); |
| } |
| } |
| |
| // The following happens when we are configured to use plain sockets, |
| // when the connection is probably remote or when we couldn't load |
| // the LocalSocket class stuff. |
| if (display == null) |
| display = new Display(displayName); |
| |
| eventPump = new XEventPump(display); |
| } |
| return display; |
| } |
| |
| XEventPump getEventPump() |
| { |
| return eventPump; |
| } |
| |
| /** |
| * Tries to load the LocalSocket class and initiate a connection to the |
| * local X server. |
| */ |
| private Socket createLocalSocket() |
| { |
| Socket socket = null; |
| try |
| { |
| // TODO: Is this 100% ok? |
| String sockPath = "/tmp/.X11-unix/X" + displayName.display_no; |
| Class localSocketAddressClass = |
| Class.forName("gnu.java.net.local.LocalSocketAddress"); |
| Constructor localSocketAddressConstr = |
| localSocketAddressClass.getConstructor(new Class[]{ String.class }); |
| Object addr = |
| localSocketAddressConstr.newInstance(new Object[]{ sockPath }); |
| Class localSocketClass = |
| Class.forName("gnu.java.net.local.LocalSocket"); |
| Constructor localSocketConstructor = |
| localSocketClass.getConstructor(new Class[]{localSocketAddressClass}); |
| Object localSocket = |
| localSocketConstructor.newInstance(new Object[]{ addr }); |
| socket = (Socket) localSocket; |
| } |
| catch (Exception ex) |
| { |
| // Whatever goes wrong here, we return null. |
| } |
| return socket; |
| } |
| } |