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

/*
 *      @(#)ww.h        2.1.1.1 83/08/09
 */

#include <stdio.h>
#include <sgtty.h>
#include "tt.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 */
};

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

#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 */

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 */
        int ww_insert :1;       /* insert mode, for printing */
        int ww_mapnl :1;        /* map \n to \r\n */
        int ww_haspty :1;       /* has pty */
        char ww_index;          /* the index, for wwindex[] */
        char ww_order;          /* the overlapping order */
        struct ww_dim ww_w;     /* window dimemsions */
        short ww_nline;         /* size of the buffer */
        short ww_scroll;        /* where the window is relative to the buffer */
        struct ww_pos ww_cur;   /* the cursor position, relative to ww_w */
        char **ww_win;          /* the window */
        union ww_char **ww_buf; /* the buffer */
        char **ww_cov;          /* the covered-by array */
        short *ww_nvis;         /* how many ww_buf chars are visible per row */
        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? */
        /* below are things for the user */
        char ww_hasframe :1;    /* frame it */
        char ww_center :1;      /* center the label */
        int ww_id;              /* the user id */
        char *ww_label;         /* the user supplied label */
};

        /* 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 */

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

        /* 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 */

struct ww wwhead;
struct ww *wwindex[NWW + 1];
struct ww wwnobody;
#define WWX_NOBODY      NWW

struct ww_tty wwoldtty, wwnewtty, wwwintty;

char *wwterm;
char wwtermcap[1024];
char wwkeys[512];
int wwnrow, wwncol;             /* the screen size */
int wwcursorrow, wwcursorcol;   /* the terminal cursor position */
int wwdtablesize;
char **wwsmap;                  /* the screen map */
union ww_char **wwns;
union ww_char **wwos;
int wwbaud;
int wwbaudmap[];

        /* statistics */
int wwnwrite;
int wwnwritec;

#define wwcurrow(w)     ((w)->ww_cur.r + (w)->ww_w.t)
#define wwcurcol(w)     ((w)->ww_cur.c + (w)->ww_w.l)
#define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
#define wwcurtowin(w)   wwsetcursor(wwcurrow(w), wwcurcol(w))
#define wwbell()        putchar(CTRL(g))

struct ww *wwopen();
struct ww *wwfind();
int wwchild();
int wwsuspend();
char *unctrl();
char **wwalloc();

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)