usr/src/usr.bin/window/ww.h

/*
 *      @(#)ww.h        3.16 83/09/15
 */

#include <stdio.h>
#include <sgtty.h>

#define NWW     30

struct ww_dim {
        int nr;                 /* number of rows */
        int nc;                 /* number of columns */
        int t, b;               /* top, bottom */
        int l, r;               /* left, right */
};

struct ww_pos {
        int r;                  /* row */
        int c;                  /* column */
};

struct ww {
        struct ww *ww_forw;     /* doubly linked list, for overlapping info */
        struct ww *ww_back;
        char ww_state;          /* state of window creation */
        char ww_wstate;         /* state for printing charcters */
        char ww_modes;          /* current printing modes */
        char ww_insert :1;      /* insert mode, for printing */
        char ww_mapnl :1;       /* map \n to \r\n */
        char ww_haspty :1;      /* has pty */
        char ww_hascursor :1;   /* has fake cursor */
        char ww_hasframe :1;    /* frame it */
        char ww_index;          /* the index, for wwindex[] */
        char ww_order;          /* the overlapping order */

                /* sizes and positions */
        struct ww_dim ww_w;     /* window size and pos */
        struct ww_dim ww_b;     /* buffer size and pos */
        struct ww_dim ww_i;     /* the part inside the screen */
        struct ww_pos ww_cur;   /* the cursor position, relative to ww_w */

                /* arrays */
        char **ww_win;          /* the window */
        union ww_char **ww_buf; /* the buffer */
        char **ww_cov;          /* the covered-by array */
        char **ww_fmap;         /* map for frame and box windows */
        short *ww_nvis;         /* how many ww_buf chars are visible per row */

                /* things for the window process */
        int ww_pty;             /* file descriptor of pty */
        int ww_tty;             /* . . . tty */
        int ww_pid;             /* pid of process, if WWS_HASPROC true */
        char ww_ttyname[11];    /* "/dev/ttyp?" */

                /* things for the user, they really don't belong here */
        char ww_center :1;      /* center the label */
        int ww_id;              /* the user window id */
        char *ww_label;         /* the user supplied label */
        struct ww_pos ww_altpos;/* alternate position */
};

struct ww_tty {
        struct sgttyb ww_sgttyb;
        struct tchars ww_tchars;
        struct ltchars ww_ltchars;
        int ww_lmode;
        int ww_ldisc;
        int ww_pgrp;
};

union ww_char {
        short c_w;              /* as a word */
        struct {
                char C_c;       /* the character part */
                char C_m;       /* the mode part */
        } c_un;
};
#define c_c c_un.C_c
#define c_m c_un.C_m

        /* parts of ww_char */
#define WWC_CMASK       0x00ff
#define WWC_MMASK       0xff00
#define WWC_MSHIFT      8

        /* c_m bits */
#define WWM_REV         0x01    /* reverse video */
#define WWM_BLK         0x02    /* blinking */
#define WWM_UL          0x04    /* underlined */
#define WWM_GLS         0x10    /* window only, glass, i.e. transparent */
#define WWM_COV         0x20    /* window only, covered */

        /* ww_state values */
#define WWS_INITIAL     0       /* just opened */
#define WWS_HASPROC     1       /* forked, in parent */
#define WWS_INCHILD     2       /* forked, in child */
#define WWS_DEAD        3       /* child died */

        /* flags for ww_fmap */
#define WWF_U           0x01
#define WWF_R           0x02
#define WWF_D           0x04
#define WWF_L           0x08
#define WWF_MASK        (WWF_U|WWF_R|WWF_D|WWF_L)
#define WWF_LABEL       0x40
#define WWF_TOP         0x80

        /* flags to wwopen() */
#define WWO_PTY         0x01            /* want pty */
#define WWO_REVERSE     0x02            /* make it all reverse video */
#define WWO_GLASS       0x04            /* make it all glass */
#define WWO_FRAME       0x08            /* this is a frame window */

        /* special ww_index value */
#define WWX_NOBODY      NWW

#define WWE_NOERR       0
#define WWE_SYS         1               /* system error */
#define WWE_NOMEM       2               /* out of memory */
#define WWE_TOOMANY     3               /* too many windows */
#define WWE_NOPTY       4               /* no more ptys */
#define WWE_SIZE        5               /* bad window size */
#define WWE_BADTERM     6               /* bad terminal type */
#define WWE_CANTDO      7               /* dumb terminal */

struct ww wwhead;
struct ww *wwindex[NWW + 1];            /* last location is for wwnobody */
struct ww wwnobody;

struct ww_tty wwoldtty;         /* the old (saved) terminal settings */
struct ww_tty wwnewtty;         /* the new (current) terminal settings */
struct ww_tty wwwintty;         /* the terminal settings for windows */
char *wwterm;                   /* the terminal name */
char wwtermcap[1024];           /* place for the termcap */
char wwkeys[512];               /* termcap fields for the function keys */

int wwnrow, wwncol;             /* the screen size */
char wwavailmodes;              /* actually supported modes */
char wwcursormodes;             /* the modes for the fake cursor */
char wwwrap;                    /* terminal has auto wrap around */
int wwdtablesize;               /* result of getdtablesize() call */
char **wwsmap;                  /* the screen map */
union ww_char **wwos;           /* the old (current) screen */
union ww_char **wwns;           /* the new (desired) screen */
char *wwtouched;                /* wwns changed flags */
int wwbaudmap[];                /* maps stty() baud rate code into number */
int wwbaud;                     /* wwbaudmap[wwoldtty.ww_sgttyb.sg_ospeed] */
int wwcursorrow, wwcursorcol;   /* where we want the cursor to be */
int wwerrno;                    /* error number */

        /* statistics */
int wwnwrite, wwnwritec;
int wwnupdate, wwntouched, wwnmiss;

        /* quicky macros */
#define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
#define wwcurtowin(w)   wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
#define wwbell()        putchar(CTRL(g))
#define wwunbox(w)      wwunframe(w)
#define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
#define wwredrawwin(w)  wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)

        /* the window virtual terminal */
#define WWT_TERM        "TERM=window"
#define WWT_TERMCAP     "WW|window|window package:\
        :cr=^M:nl=^J:bl=^G:\
        :al=\\EL:am:le=^H:bs:cd=\\EJ:ce=\\EK:cl=\\EE:cm=\\EY%+ %+ :\
        :da:db:dc=\\EN:dl=\\EM:do=\\EB:ei=\\EO:ho=\\EH:im=\\E@:mi:\
        :nd=\\EC:ta=^I:pt:up=\\EA:"
#define WWT_REV         "se=\\Eq:so=\\Ep:"
#define WWT_UL          "ue=\\Es:us=\\Er:"

        /* our functions */
struct ww *wwopen();
struct ww *wwfind();
int wwchild();
int wwsuspend();
char *unctrl();
char **wwalloc();
char *wwerror();

        /* c library functions */
char *malloc();
char *calloc();
char *getenv();
char *tgetstr();
char *rindex();
char *strcpy();
char *strcat();

#undef MIN
#undef MAX
#define MIN(x, y)       ((x) > (y) ? (y) : (x))
#define MAX(x, y)       ((x) > (y) ? (x) : (y))

#undef CTRL
#define CTRL(c)         ('c'&0x1f)
#define DEL             0x7f
#define ISCTRL(c)       ((c) < ' ' || (c) >= DEL)