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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/gnu/java/awt/peer/x/XGraphicsDevice.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/awt/peer/x/XGraphicsDevice.java')
-rw-r--r-- | libjava/classpath/gnu/java/awt/peer/x/XGraphicsDevice.java | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/peer/x/XGraphicsDevice.java b/libjava/classpath/gnu/java/awt/peer/x/XGraphicsDevice.java new file mode 100644 index 000000000..6b65e14ed --- /dev/null +++ b/libjava/classpath/gnu/java/awt/peer/x/XGraphicsDevice.java @@ -0,0 +1,200 @@ +/* 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 gnu.x11.EscherServerConnectionException; + +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) + { + try + { + display = new Display(socket, "localhost", + displayName.display_no, + displayName.screen_no); + } + catch (EscherServerConnectionException e) + { + throw new RuntimeException(e.getCause()); + } + } + } + + // 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) + { + try + { + display = new Display(displayName); + } + catch (EscherServerConnectionException e) + { + throw new RuntimeException(e.getCause()); + } + } + + 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; + } +} |