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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/hw/dmx/input/ChkNotMaskEv.c
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Checked in the following released items:
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Diffstat (limited to 'xorg-server/hw/dmx/input/ChkNotMaskEv.c')
-rw-r--r--xorg-server/hw/dmx/input/ChkNotMaskEv.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/xorg-server/hw/dmx/input/ChkNotMaskEv.c b/xorg-server/hw/dmx/input/ChkNotMaskEv.c
new file mode 100644
index 000000000..fdc67a889
--- /dev/null
+++ b/xorg-server/hw/dmx/input/ChkNotMaskEv.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright 1985, 1987, 1998 The Open Group
+ *
+ * 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.
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of The Open Group shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from The Open Group.
+ */
+/* $XFree86 */
+
+/*
+ * Copyright 2002-2003 Red Hat Inc., Durham, North Carolina.
+ *
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation on the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/** \file
+ * This file provides a #XCheckNotMaskEvent function that is derived
+ * from the standard Xlib XCheckMaskEvent function. */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#define NEED_EVENTS
+#include "dmx.h"
+#include "ChkNotMaskEv.h"
+
+extern long const _Xevent_to_mask[];
+
+/** Check existing events in queue to find if any match. If so, return.
+ * If not, flush buffer and see if any more events are readable. If one
+ * matches, return. If all else fails, tell the user no events found.
+ */
+Bool XCheckNotMaskEvent (Display *dpy, long mask, XEvent *event)
+{
+ register _XQEvent *prev, *qelt;
+ unsigned long qe_serial = 0;
+ int n; /* time through count */
+
+ LockDisplay(dpy);
+ prev = NULL;
+ for (n = 3; --n >= 0;) {
+ for (qelt = prev ? prev->next : dpy->head;
+ qelt;
+ prev = qelt, qelt = qelt->next) {
+ if (qelt->event.type >= LASTEvent
+ || !(_Xevent_to_mask[qelt->event.type] & mask)) {
+ *event = qelt->event;
+ _XDeq(dpy, prev, qelt);
+ UnlockDisplay(dpy);
+ return True;
+ }
+ }
+ if (prev)
+ qe_serial = prev->qserial_num;
+ switch (n) {
+ case 2:
+ _XEventsQueued(dpy, QueuedAfterReading);
+ break;
+ case 1:
+ _XFlush(dpy);
+ break;
+ }
+ if (prev && prev->qserial_num != qe_serial)
+ /* another thread has snatched this event */
+ prev = NULL;
+ }
+ UnlockDisplay(dpy);
+ return False;
+}