--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/open-src/app/xlock/sun-src/image.c	Sun Sep 21 18:53:48 2008 -0700
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 1988-91 by Patrick J. Naughton.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted,
+ * provided that the above copyright notice appear in all copies and that
+ * both that copyright notice and this permission notice appear in
+ * supporting documentation.
+ *
+ * This file is provided AS IS with no warranties of any kind.  The author
+ * shall have no liability with respect to the infringement of copyrights,
+ * trade secrets or any patents by this file or any part thereof.  In no
+ * event will the author be liable for any lost revenue or profits or
+ * other special, indirect and consequential damages.
+ */
+
+/*
+ * Copyright 1994 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * 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 the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons
+ * to whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ *
+ * 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
+ * OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR 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.
+ *
+ * Except as contained in this notice, the name of a copyright holder
+ * shall not be used in advertising or otherwise to promote the sale, use
+ * or other dealings in this Software without prior written authorization
+ * of the copyright holder.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)image.c	35.3 08/09/18 XLOCK";
+#endif
+/*-
+ * image.c - image bouncer for xlock, the X Window System lockscreen.
+ *
+ * Copyright (c) 1991 by Patrick J. Naughton.
+ *
+ * See xlock.c for copying information.
+ *
+ * Revision History:
+ * 29-Jul-90: Written.
+ */
+
+#include "xlock.h"
+#include "sunlogo.bit"
+
+static XImage logo = {
+    0, 0,			/* width, height */
+    0, XYBitmap, 0,		/* xoffset, format, data */
+    LSBFirst, 8,		/* byte-order, bitmap-unit */
+    LSBFirst, 8, 1		/* bitmap-bit-order, bitmap-pad, depth */
+};
+
+#define MAXICONS 1024
+
+typedef struct {
+    int         x;
+    int         y;
+}           point;
+
+typedef struct {
+    int         width;
+    int         height;
+    int         nrows;
+    int         ncols;
+    int         xb;
+    int         yb;
+    int         iconmode;
+    int         iconcount;
+    point       icons[MAXICONS];
+    long        startTime;
+}           imagestruct;
+
+extern XColor ssblack[];
+extern XColor sswhite[];
+
+static imagestruct ims[MAXSCREENS];
+
+void
+drawimage(win)
+    Window      win;
+{
+    imagestruct *ip = &ims[screen];
+    int         i;
+
+    XSetForeground(dsp, Scr[screen].gc, ssblack[screen].pixel);
+    for (i = 0; i < ip->iconcount; i++) {
+	if (!ip->iconmode)
+	    XFillRectangle(dsp, win, Scr[screen].gc,
+			   ip->xb + sunlogo_width * ip->icons[i].x,
+			   ip->yb + sunlogo_height * ip->icons[i].y,
+			   sunlogo_width, sunlogo_height);
+
+	ip->icons[i].x = random() % ip->ncols;
+	ip->icons[i].y = random() % ip->nrows;
+    }
+    if (Scr[screen].npixels == 2)
+	XSetForeground(dsp, Scr[screen].gc, sswhite[screen].pixel);
+    for (i = 0; i < ip->iconcount; i++) {
+	if (Scr[screen].npixels > 2)
+	    XSetForeground(dsp, Scr[screen].gc,
+			 Scr[screen].pixels[random() % Scr[screen].npixels]);
+
+	XPutImage(dsp, win, Scr[screen].gc, &logo,
+		  0, 0,
+		  ip->xb + sunlogo_width * ip->icons[i].x,
+		  ip->yb + sunlogo_height * ip->icons[i].y,
+		  sunlogo_width, sunlogo_height);
+    }
+}
+
+void
+initimage(win)
+    Window      win;
+{
+    XWindowAttributes xgwa;
+    imagestruct *ip = &ims[screen];
+
+    ip->startTime = seconds();
+
+    logo.data = (char *) sunlogo_bits;
+    logo.width = sunlogo_width;
+    logo.height = sunlogo_height;
+    logo.bytes_per_line = (sunlogo_width + 7) / 8;
+
+    XGetWindowAttributes(dsp, win, &xgwa);
+    ip->width = xgwa.width;
+    ip->height = xgwa.height;
+    ip->ncols = ip->width / sunlogo_width;
+    ip->nrows = ip->height / sunlogo_height;
+    ip->iconmode = (ip->ncols < 2 || ip->nrows < 2);
+    if (ip->iconmode) {
+	ip->xb = 0;
+	ip->yb = 0;
+	ip->iconcount = 1;	/* icon mode */
+    } else {
+	ip->xb = (ip->width - sunlogo_width * ip->ncols) / 2;
+	ip->yb = (ip->height - sunlogo_height * ip->nrows) / 2;
+	ip->iconcount = batchcount;
+	if ((ip->iconcount) >  MAXICONS)
+		ip->iconcount = MAXICONS;
+    }
+    XSetForeground(dsp, Scr[screen].gc, ssblack[screen].pixel);
+    XFillRectangle(dsp, win, Scr[screen].gc, 0, 0, ip->width, ip->height);
+}