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Annotation of 43BSDTahoe/usr.lib/libplot/aed/open.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)open.c     5.2 (Berkeley) 4/30/85";
        !             9: #endif not lint
        !            10: 
        !            11: 
        !            12: /*
        !            13:  * Displays plot files on a AED512 graphics terminal.
        !            14:  */
        !            15: 
        !            16: #include "aed.h"
        !            17: 
        !            18: char dbuf[BUFSIZ];     /* Used to buffer display characters */
        !            19: struct sgttyb sgttyb;  /* Used to save terminal control bits */
        !            20: curx, cury;            /* Current screen position */
        !            21: int xbot, ybot;                /* Coordinates of screen lower-left corner */
        !            22: int scale;             /* The number of pixels per 2**12 units
        !            23:                         * of world coordinates.
        !            24:                         */
        !            25: 
        !            26: /*
        !            27:  * The following is the color map, containing reg, green, and blue
        !            28:  * values for color locations 0 and 1.
        !            29:  */
        !            30: 
        !            31: static int colors[] = {200, 200, 200, 0, 0, 125, 125, 0, 0, 125, 0, 0};
        !            32: 
        !            33: /*---------------------------------------------------------
        !            34:  *     Openpl initializes the graphics display and clears its screen.
        !            35:  *
        !            36:  *     Results:        None.
        !            37:  *
        !            38:  *     Side Effects:
        !            39:  *     The display is re-initialized and the file is remembered for
        !            40:  *     use in all subsequent calls to this module.  The display's
        !            41:  *     color map is reset.  The display is put into raw mode, but
        !            42:  *     the previous mode bits are saved.
        !            43:  *
        !            44:  *     Errors:         None.
        !            45:  *---------------------------------------------------------
        !            46:  */
        !            47: openpl()
        !            48: {
        !            49:     int flags, *p, i;
        !            50:     char dum[4];
        !            51: 
        !            52:     /* First, grab up the display modes, then reset them to put it
        !            53:      * into cooked mode.  Also, lock the terminal.
        !            54:      */
        !            55: 
        !            56:     (void) gtty(fileno(stdout), &sgttyb);
        !            57:     flags = sgttyb.sg_flags;
        !            58:     sgttyb.sg_flags = (sgttyb.sg_flags & ~(RAW | CBREAK)) | EVENP | ODDP;
        !            59:     (void) stty(fileno(stdout), &sgttyb);
        !            60:     sgttyb.sg_flags = flags;
        !            61: 
        !            62:     /* Save the file pointer around for later use, then output an
        !            63:      * initialization string to the display.  The initialization
        !            64:      * string resets the terminal, sets formats, clears the display,
        !            65:      * initializes the read and write masks, and sets the color map.
        !            66:      */
        !            67: 
        !            68:     setbuf(stdout, dbuf);
        !            69:     fputs("\33\33G1HHHN[00LFFCFFMFFFFFFFF", stdout);
        !            70:     fputs("K0004", stdout);
        !            71:     p = colors;
        !            72:     for (i=0; i<12; i++)
        !            73:     {
        !            74:        chex(*p++, dum, 2);
        !            75:        fputs(dum, stdout);
        !            76:     }
        !            77:     fputs("^15060AL", stdout);
        !            78:     scale = 1<<12;
        !            79:     curx = cury = xbot = ybot = 0;
        !            80:     (void) fflush(stdout);
        !            81: }

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