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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/gcj/xlib/Display.java
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diff --git a/libjava/gnu/gcj/xlib/Display.java b/libjava/gnu/gcj/xlib/Display.java
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+/* Copyright (C) 1999, 2000 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+package gnu.gcj.xlib;
+
+import java.util.Dictionary;
+import java.util.Hashtable;
+import java.util.Vector;
+import java.util.Enumeration;
+
+import gnu.gcj.RawData;
+
+/**
+ * A connection to an X11 display.
+ *
+ * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
+ */
+
+public class Display
+{
+ static
+ {
+ staticInit();
+ }
+
+ public Display()
+ {
+ init();
+ }
+
+ private static native void staticInit();
+ private native void init();
+ protected native void finalize();
+
+ RawData display = null;
+
+ /* TODO?: Rather than storing such data here, we might consider
+ using the context manager facilities provided by Xlib... */
+ private Dictionary xids = new Hashtable();
+
+ protected final void addXID(int xid, XID window)
+ {
+ xids.put(new Integer(xid), window);
+ }
+
+ protected final void removeXID(int xid)
+ {
+ xids.remove(new Integer(xid));
+ }
+
+ public final Window getDefaultRootWindow()
+ {
+ int rootXID = getDefaultRootWindowXID();
+ return getWindow(rootXID);
+ }
+
+ public final XID getXID(int xid)
+ {
+ return (XID) xids.get(new Integer(xid));
+ }
+
+ public final Window getWindow(int xid)
+ {
+ Window window = (Window) getXID(xid);
+ if (window == null)
+ {
+ window = new Window(this, xid);
+ addXID(xid, window);
+ }
+ return window;
+ }
+
+ public final Screen getDefaultScreen()
+ {
+ /* Screens objects are not cached since they are lightweight.
+ We just create a new object when requested. */
+ return new Screen(this, getDefaultScreenNumber());
+ }
+
+ public final native int getDefaultScreenNumber();
+
+ private final native int getDefaultRootWindowXID();
+
+ private Dictionary atoms = new Hashtable();
+
+ public final int getAtom(String name)
+ {
+ Integer atomInt = (Integer) atoms.get(name);
+ if (atomInt == null)
+ return internAtom(name);
+ return atomInt.intValue();
+ }
+
+ // TODO?: cache reverse lookup too?
+ public final native String getAtomName(int atom);
+
+ private final native int internAtom(String name);
+
+ public native void flush();
+}