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NetBSD/lib/libcurses/curses_private.h

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/* $NetBSD: curses_private.h,v 1.50 2014/02/20 09:42:42 blymn Exp $ */
/*-
* Copyright (c) 1998-2000 Brett Lymn
* (blymn@baea.com.au, brett_lymn@yahoo.com.au)
* All rights reserved.
*
* This code has been donated to The NetBSD Foundation by the Author.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
*/
/* Modified by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>
* to add support for wide characters
* Changes:
* - Add a compiler variable HAVE_WCHAR for wide character only code
* - Add a pointer to liked list of non-spacing characters in __ldata
* and the macro to access the width field in the attribute field
* - Add a circular input character buffer in __screen to handle
* wide-character input (used in get_wch())
*/
#include <term.h>
#include <termios.h>
/* Private structure definitions for curses. */
/* Termcap capabilities. */
#ifdef HAVE_WCHAR
/*
* Add a list of non-spacing characters to each spacing
* character in a singly linked list
*/
typedef struct nschar_t {
wchar_t ch; /* Non-spacing character */
struct nschar_t *next; /* Next non-spacing character */
} nschar_t;
#endif /* HAVE_WCHAR */
/*
* A window is an array of __LINE structures pointed to by the 'lines' pointer.
* A line is an array of __LDATA structures pointed to by the 'line' pointer.
*
* IMPORTANT: the __LDATA structure must NOT induce any padding, so if new
* fields are added -- padding fields with *constant values* should ensure
* that the compiler will not generate any padding when storing an array of
* __LDATA structures. This is to enable consistent use of memcmp, and memcpy
* for comparing and copying arrays.
*/
struct __ldata {
wchar_t ch; /* Character */
attr_t attr; /* Attributes */
#ifdef HAVE_WCHAR
nschar_t *nsp; /* Foreground non-spacing character pointer */
#endif /* HAVE_WCHAR */
};
#ifdef HAVE_WCHAR
/* macros to extract the width of a wide character */
#define __WCWIDTH 0xfc000000
#define WCW_SHIFT 26
#define WCOL(wc) ((((unsigned) (wc).attr) >> WCW_SHIFT ) > MB_LEN_MAX ? ((int)(((unsigned) (wc).attr ) >> WCW_SHIFT )) - 64 : ((int)(((unsigned) (wc).attr ) >> WCW_SHIFT)))
#define SET_WCOL(c, w) do { \
((c).attr) = ((((c).attr) & WA_ATTRIBUTES ) | ((w) << WCW_SHIFT )); \
} while(/*CONSTCOND*/0)
#define BGWCOL(wc) ((((wc).battr) >> WCW_SHIFT ) > MB_LEN_MAX ? (((wc).battr ) >> WCW_SHIFT ) - 64 : (((wc).battr ) >> WCW_SHIFT ))
#define SET_BGWCOL(c, w) do { \
((c).battr) = ((((c).battr) & WA_ATTRIBUTES ) | ((w) << WCW_SHIFT )); \
} while(/*CONSTCOND*/0)
#endif /* HAVE_WCHAR */
#define __LDATASIZE (sizeof(__LDATA))
struct __line {
#ifdef DEBUG
#define SENTINEL_VALUE 0xaac0ffee
unsigned int sentinel; /* try to catch line overflows */
#endif
#define __ISDIRTY 0x01 /* Line is dirty. */
#define __ISPASTEOL 0x02 /* Cursor is past end of line */
#define __ISFORCED 0x04 /* Force update, no optimisation */
unsigned int flags;
unsigned int hash; /* Hash value for the line. */
int *firstchp, *lastchp; /* First and last chngd columns ptrs */
int firstch, lastch; /* First and last changed columns. */
__LDATA *line; /* Pointer to the line text. */
};
struct __window { /* Window structure. */
struct __window *nextp, *orig; /* Subwindows list and parent. */
int begy, begx; /* Window home. */
int cury, curx; /* Current x, y coordinates. */
int maxy, maxx; /* Maximum values for curx, cury. */
int reqy, reqx; /* Size requested when created */
int ch_off; /* x offset for firstch/lastch. */
__LINE **alines; /* Array of pointers to the lines */
__LINE *lspace; /* line space (for cleanup) */
__LDATA *wspace; /* window space (for cleanup) */
#define __ENDLINE 0x00000001 /* End of screen. */
#define __FLUSH 0x00000002 /* Fflush(stdout) after refresh. */
#define __FULLWIN 0x00000004 /* Window is a screen. */
#define __IDLINE 0x00000008 /* Insert/delete sequences. */
#define __SCROLLWIN 0x00000010 /* Last char will scroll window. */
#define __SCROLLOK 0x00000020 /* Scrolling ok. */
#define __CLEAROK 0x00000040 /* Clear on next refresh. */
#define __LEAVEOK 0x00000100 /* If cursor left */
#define __KEYPAD 0x00010000 /* If interpreting keypad codes */
#define __NOTIMEOUT 0x00020000 /* Wait indefinitely for func keys */
#define __IDCHAR 0x00040000 /* insert/delete char sequences */
#define __ISPAD 0x00080000 /* "window" is a pad */
#define __ISDERWIN 0x00100000 /* "window" is derived from parent */
unsigned int flags;
int delay; /* delay for getch() */
attr_t wattr; /* Character attributes */
wchar_t bch; /* Background character */
attr_t battr; /* Background attributes */
int scr_t, scr_b; /* Scrolling region top, bottom */
SCREEN *screen; /* Screen for this window */
int pbegy, pbegx,
sbegy, sbegx,
smaxy, smaxx; /* Saved prefresh() values */
int dery, derx; /* derived window coordinates
- top left corner of source
relative to parent win */
#ifdef HAVE_WCHAR
nschar_t *bnsp; /* Background non-spacing char list */
#endif /* HAVE_WCHAR */
};
/* Set of attributes unset by 'me' - 'mb', 'md', 'mh', 'mk', 'mp' and 'mr'. */
#ifndef HAVE_WCHAR
#define __TERMATTR \
(__REVERSE | __BLINK | __DIM | __BOLD | __BLANK | __PROTECT)
#else
#define __TERMATTR \
(__REVERSE | __BLINK | __DIM | __BOLD | __BLANK | __PROTECT \
| WA_TOP | WA_LOW | WA_LEFT | WA_RIGHT | WA_HORIZONTAL | WA_VERTICAL)
#endif /* HAVE_WCHAR */
struct __winlist {
struct __window *winp; /* The window. */
struct __winlist *nextp; /* Next window. */
};
struct __color {
short num;
short red;
short green;
short blue;
int flags;
};
/* List of colour pairs */
struct __pair {
short fore;
short back;
int flags;
};
/* Maximum colours */
#define MAX_COLORS 64
/* Maximum colour pairs - determined by number of colour bits in attr_t */
#define MAX_PAIRS PAIR_NUMBER(__COLOR)
typedef struct keymap keymap_t;
/* this is the encapsulation of the terminal definition, one for
* each terminal that curses talks to.
*/
struct __screen {
FILE *infd, *outfd; /* input and output file descriptors */
WINDOW *curscr; /* Current screen. */
WINDOW *stdscr; /* Standard screen. */
WINDOW *__virtscr; /* Virtual screen (for doupdate()). */
int curwin; /* current window for refresh */
int lx, ly; /* loop parameters for refresh */
int COLS; /* Columns on the screen. */
int LINES; /* Lines on the screen. */
int TABSIZE; /* Size of a tab. */
int COLORS; /* Maximum colors on the screen */
int COLOR_PAIRS; /* Maximum color pairs on the screen */
int My_term; /* Use Def_term regardless. */
char GT; /* Gtty indicates tabs. */
char NONL; /* Term can't hack LF doing a CR. */
char UPPERCASE; /* Terminal is uppercase only. */
chtype acs_char[NUM_ACS];
#ifdef HAVE_WCHAR
cchar_t wacs_char[ NUM_ACS ];
#endif /* HAVE_WCHAR */
struct __color colours[MAX_COLORS];
struct __pair colour_pairs[MAX_PAIRS];
attr_t nca;
/* Style of colour manipulation */
#define COLOR_NONE 0
#define COLOR_ANSI 1 /* ANSI/DEC-style colour manipulation */
#define COLOR_HP 2 /* HP-style colour manipulation */
#define COLOR_TEK 3 /* Tektronix-style colour manipulation */
#define COLOR_OTHER 4 /* None of the others but can set fore/back */
int color_type;
attr_t mask_op;
attr_t mask_me;
attr_t mask_ue;
attr_t mask_se;
TERMINAL *term;
int old_mode; /* old cursor visibility state for terminal */
keymap_t *base_keymap;
int echoit;
int pfast;
int rawmode;
int nl;
int noqch;
int clearok;
int useraw;
struct __winlist *winlistp;
struct termios cbreakt, rawt, *curt, save_termios;
struct termios orig_termios, baset, savedtty;
int ovmin;
int ovtime;
char *stdbuf;
unsigned int len;
int meta_state;
char padchar;
int endwin;
int notty;
int half_delay;
int resized;
wchar_t *unget_list;
int unget_len, unget_pos;
#ifdef HAVE_WCHAR
#define MB_LEN_MAX 8
#define MAX_CBUF_SIZE MB_LEN_MAX
int cbuf_head; /* header to cbuf */
int cbuf_tail; /* tail to cbuf */
int cbuf_cur; /* the current char in cbuf */
mbstate_t sp; /* wide char processing state */
char cbuf[ MAX_CBUF_SIZE ]; /* input character buffer */
#endif /* HAVE_WCHAR */
};
extern char __GT; /* Gtty indicates tabs. */
extern char __NONL; /* Term can't hack LF doing a CR. */
extern char __UPPERCASE; /* Terminal is uppercase only. */
extern int My_term; /* Use Def_term regardless. */
extern const char *Def_term; /* Default terminal type. */
extern SCREEN *_cursesi_screen; /* The current screen in use */
/* Debugging options/functions. */
#ifdef DEBUG
#define __CTRACE_TSTAMP 0x00000001
#define __CTRACE_MISC 0x00000002
#define __CTRACE_INIT 0x00000004
#define __CTRACE_SCREEN 0x00000008
#define __CTRACE_WINDOW 0x00000010
#define __CTRACE_REFRESH 0x00000020
#define __CTRACE_COLOR 0x00000040
#define __CTRACE_INPUT 0x00000080
#define __CTRACE_OUTPUT 0x00000100
#define __CTRACE_LINE 0x00000200
#define __CTRACE_ATTR 0x00000400
#define __CTRACE_ERASE 0x00000800
#define __CTRACE_FILEIO 0x00001000
#define __CTRACE_ALL 0x7fffffff
void __CTRACE_init(void);
void __CTRACE(int, const char *, ...) __attribute__((__format__(__printf__, 2, 3)));
#endif
/* Private functions. */
int __cputchar_args(int, void *);
void _cursesi_free_keymap(keymap_t *);
int _cursesi_gettmode(SCREEN *);
void _cursesi_reset_acs(SCREEN *);
int _cursesi_addbyte(WINDOW *, __LINE **, int *, int *, int , attr_t, int);
int _cursesi_addwchar(WINDOW *, __LINE **, int *, int *, const cchar_t *,
int);
int _cursesi_waddbytes(WINDOW *, const char *, int, attr_t, int);
#ifdef HAVE_WCHAR
void _cursesi_reset_wacs(SCREEN *);
#endif /* HAVE_WCHAR */
void _cursesi_resetterm(SCREEN *);
int _cursesi_setterm(char *, SCREEN *);
int __delay(void);
u_int __hash_more(const void *, size_t, u_int);
#define __hash(s, len) __hash_more((s), (len), 0u)
void __id_subwins(WINDOW *);
void __init_getch(SCREEN *);
void __init_acs(SCREEN *);
#ifdef HAVE_WCHAR
void __init_get_wch(SCREEN *);
void __init_wacs(SCREEN *);
int __cputwchar_args( wchar_t, void * );
int _cursesi_copy_nsp(nschar_t *, struct __ldata *);
void __cursesi_free_nsp(nschar_t *);
void __cursesi_win_free_nsp(WINDOW *);
void __cursesi_putnsp(nschar_t *, const int, const int);
void __cursesi_chtype_to_cchar(chtype, cchar_t *);
#endif /* HAVE_WCHAR */
int __unget(wint_t);
int __mvcur(int, int, int, int, int);
WINDOW *__newwin(SCREEN *, int, int, int, int, int);
int __nodelay(void);
int __notimeout(void);
void __restartwin(void);
void __restore_colors(void);
void __restore_cursor_vis(void);
void __restore_meta_state(void);
void __restore_termios(void);
void __restore_stophandler(void);
void __restore_winchhandler(void);
void __save_termios(void);
void __set_color(WINDOW *win, attr_t attr);
void __set_stophandler(void);
void __set_winchhandler(void);
void __set_subwin(WINDOW *, WINDOW *);
void __startwin(SCREEN *);
void __stop_signal_handler(int);
int __stopwin(void);
void __swflags(WINDOW *);
int __timeout(int);
int __touchline(WINDOW *, int, int, int);
int __touchwin(WINDOW *);
void __unsetattr(int);
void __unset_color(WINDOW *win);
int __waddch(WINDOW *, __LDATA *);
int __wgetnstr(WINDOW *, char *, int);
void __winch_signal_handler(int);
/* Private #defines. */
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a ): (b))
/* Private externs. */
extern int __echoit;
extern int __endwin;
extern int __pfast;
extern int __rawmode;
extern int __noqch;
extern attr_t __mask_op, __mask_me, __mask_ue, __mask_se;
extern WINDOW *__virtscr;
extern int __using_color;
extern attr_t __default_color;
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