1 files changed, 117 insertions, 0 deletions
diff --git a/plugins/clipboard/xutils.c b/plugins/clipboard/xutils.c
new file mode 100644
index 0000000..4e48b98
--- /dev/null
+++ b/plugins/clipboard/xutils.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright © 2004 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Red Hat not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  Red Hat makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL RED HAT
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  Matthias Clasen, Red Hat, Inc.
+ */
+
+#include <stdlib.h>
+
+#include "xutils.h"
+
+Atom XA_ATOM_PAIR;
+Atom XA_CLIPBOARD_MANAGER;
+Atom XA_CLIPBOARD;
+Atom XA_DELETE;
+Atom XA_INCR;
+Atom XA_INSERT_PROPERTY;
+Atom XA_INSERT_SELECTION;
+Atom XA_MANAGER;
+Atom XA_MULTIPLE;
+Atom XA_NULL;
+Atom XA_SAVE_TARGETS;
+Atom XA_TARGETS;
+Atom XA_TIMESTAMP;
+
+unsigned long SELECTION_MAX_SIZE = 0;
+
+
+void
+init_atoms (Display *display)
+{
+  unsigned long max_request_size;
+  
+  if (SELECTION_MAX_SIZE > 0)
+    return;
+
+  XA_ATOM_PAIR = XInternAtom (display, "ATOM_PAIR", False);
+  XA_CLIPBOARD_MANAGER = XInternAtom (display, "CLIPBOARD_MANAGER", False);
+  XA_CLIPBOARD = XInternAtom (display, "CLIPBOARD", False);
+  XA_DELETE = XInternAtom (display, "DELETE", False);
+  XA_INCR = XInternAtom (display, "INCR", False);
+  XA_INSERT_PROPERTY = XInternAtom (display, "INSERT_PROPERTY", False);
+  XA_INSERT_SELECTION = XInternAtom (display, "INSERT_SELECTION", False);
+  XA_MANAGER = XInternAtom (display, "MANAGER", False);
+  XA_MULTIPLE = XInternAtom (display, "MULTIPLE", False);
+  XA_NULL = XInternAtom (display, "NULL", False);
+  XA_SAVE_TARGETS = XInternAtom (display, "SAVE_TARGETS", False);
+  XA_TARGETS = XInternAtom (display, "TARGETS", False);
+  XA_TIMESTAMP = XInternAtom (display, "TIMESTAMP", False);
+  
+  max_request_size = XExtendedMaxRequestSize (display);
+  if (max_request_size == 0)
+    max_request_size = XMaxRequestSize (display);
+  
+  SELECTION_MAX_SIZE = max_request_size - 100;
+  if (SELECTION_MAX_SIZE > 262144)
+    SELECTION_MAX_SIZE =  262144;
+}
+
+typedef struct 
+{
+  Window window;
+  Atom timestamp_prop_atom;
+} TimeStampInfo;
+
+static Bool
+timestamp_predicate (Display *display,
+		     XEvent  *xevent,
+		     XPointer arg)
+{
+  TimeStampInfo *info = (TimeStampInfo *)arg;
+
+  if (xevent->type == PropertyNotify &&
+      xevent->xproperty.window == info->window &&
+      xevent->xproperty.atom == info->timestamp_prop_atom)
+    return True;
+
+  return False;
+}
+
+Time
+get_server_time (Display *display,
+		 Window   window)
+{
+  unsigned char c = 'a';
+  XEvent xevent;
+  TimeStampInfo info;
+
+  info.timestamp_prop_atom = XInternAtom  (display, "_TIMESTAMP_PROP", False);
+  info.window = window;
+
+  XChangeProperty (display, window,
+		   info.timestamp_prop_atom, info.timestamp_prop_atom,
+		   8, PropModeReplace, &c, 1);
+
+  XIfEvent (display, &xevent,
+	    timestamp_predicate, (XPointer)&info);
+
+  return xevent.xproperty.time;
+}
+