1 files changed, 105 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/xlib/Display.java b/libjava/gnu/gcj/xlib/Display.java
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+++ b/libjava/gnu/gcj/xlib/Display.java
@@ -0,0 +1,105 @@
+/* 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();
+}