Init

ucbcmd/plot/libplot/aed/open.c

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+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
+/*	The copyright notice above does not evidence any   	*/
+/*	actual or intended publication of such source code.	*/
+
+#ident	"@(#)open.c	1.1	90/08/19 SMI"	/* SVr4.0 1.1	*/
+
+/*
+ * Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc.
+ * All Rights Reserved.
+ */
+
+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+
+/*
+ * Displays plot files on a AED512 graphics terminal.
+ */
+
+#include "aed.h"
+
+char dbuf[BUFSIZ];	/* Used to buffer display characters */
+struct sgttyb sgttyb;	/* Used to save terminal control bits */
+int curx, cury;		/* Current screen position */
+int xbot, ybot;		/* Coordinates of screen lower-left corner */
+int scale;		/* The number of pixels per 2**12 units
+			 * of world coordinates.
+			 */
+
+/*
+ * The following is the color map, containing reg, green, and blue
+ * values for color locations 0 and 1.
+ */
+
+static int colors[] = {200, 200, 200, 0, 0, 125, 125, 0, 0, 125, 0, 0};
+
+/*---------------------------------------------------------
+ *	Openpl initializes the graphics display and clears its screen.
+ *
+ *	Results:	None.
+ *
+ *	Side Effects:
+ *	The display is re-initialized and the file is remembered for
+ *	use in all subsequent calls to this module.  The display's
+ *	color map is reset.  The display is put into raw mode, but
+ *	the previous mode bits are saved.
+ *
+ *	Errors:		None.
+ *---------------------------------------------------------
+ */
+openpl()
+{
+    int flags, *p, i;
+    char dum[4];
+
+    /* First, grab up the display modes, then reset them to put it
+     * into cooked mode.  Also, lock the terminal.
+     */
+
+    (void) gtty(fileno(stdout), &sgttyb);
+    flags = sgttyb.sg_flags;
+    sgttyb.sg_flags = (sgttyb.sg_flags & ~(RAW)) | EVENP | ODDP;
+    (void) stty(fileno(stdout), &sgttyb);
+    sgttyb.sg_flags = flags;
+
+    /* Save the file pointer around for later use, then output an
+     * initialization string to the display.  The initialization
+     * string resets the terminal, sets formats, clears the display,
+     * initializes the read and write masks, and sets the color map.
+     */
+
+    setbuf(stdout, dbuf);
+    fputs("\33\33G1HHHN[00LFFCFFMFFFFFFFF", stdout);
+    fputs("K0004", stdout);
+    p = colors;
+    for (i=0; i<12; i++)
+    {
+	chex(*p++, dum, 2);
+	fputs(dum, stdout);
+    }
+    fputs("^15060AL", stdout);
+    scale = 1<<12;
+    curx = cury = xbot = ybot = 0;
+    (void) fflush(stdout);
+}