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20de491506
NetBSD/lib/libcurses/curses_private.h
blymn 2a780e62ed Rework previous fix for getch cursor position when cursor is moved 
without refresh.  If the window is not dirty but the window cursor
position does not match curscr then move the cursor.  This fixes
the issues seen in PR lib/54263.
2019-06-09 07:40:14 +00:00

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/* $NetBSD: curses_private.h,v 1.71 2019/06/09 07:40:14 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 */
#define __IMMEDOK 0x00200000 /* refreshed when changed */
#define __SYNCOK 0x00400000 /* sync when changed */
#define __HALFDELAY 0x00800000 /* In half delay mode */
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 */
FILE *fp; /* for window formatted printf */
char *buf; /* buffer for window formatted printf */
size_t buflen; /* length of above buffer */
};
/* 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 256
/* Maximum colour pairs - determined by number of colour bits in attr_t */
#define MAX_PAIRS PAIR_NUMBER(__COLOR)
typedef struct keymap keymap_t;
/* POSIX allows up to 8 columns in a label. */
#define MAX_SLK_COLS 8
#ifdef HAVE_WCHAR
#define MAX_SLK_LABEL sizeof(wchar_t) * MAX_SLK_COLS
#else
#define MAX_SLK_LABEL MAX_SLK_COLS
#endif
struct __slk_label {
char *text;
int justify;
#define SLK_JUSTIFY_LEFT 0
#define SLK_JUSTIFY_CENTER 1
#define SLK_JUSTIFY_RIGHT 2
char label[MAX_SLK_LABEL + 1];
int x;
};
#define MAX_RIPS 5
struct __ripoff {
int nlines;
WINDOW *win;
};
/* 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 nripped; /* Number of ripofflines. */
struct __ripoff ripped[MAX_RIPS]; /* ripofflines. */
int ESCDELAY; /* Delay between keys in esc seq's. */
#define ESCDELAY_DEFAULT 300 /* milliseconds. */
int TABSIZE; /* Size of a tab. */
#define TABSIZE_DEFAULT 8 /* spaces. */
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 resized;
wchar_t *unget_list;
int unget_len, unget_pos;
int filtered;
int checkfd;
/* soft label key */
bool is_term_slk;
WINDOW *slk_window;
int slk_format;
#define SLK_FMT_INVAL -1
#define SLK_FMT_3_2_3 0
#define SLK_FMT_4_4 1
int slk_nlabels;
int slk_label_len;
bool slk_hidden;
struct __slk_label *slk_labels;
#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(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);
unsigned int __hash_more(const void *, size_t, unsigned 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 __fgetc_resize(FILE *);
int __unget(wint_t);
int __mvcur(int, int, int, int, int);
WINDOW *__newwin(SCREEN *, int, 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);
int __ripoffscreen(SCREEN *);
int __ripoffresize(SCREEN *);
void __ripofftouch(SCREEN *);
int __rippedlines(const SCREEN *, int);
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 *);
int __slk_init(SCREEN *);
void __slk_free(SCREEN *);
int __slk_resize(SCREEN *, int cols);
int __slk_noutrefresh(SCREEN *);
void __startwin(SCREEN *);
void __stop_signal_handler(int);
int __stopwin(void);
void __swflags(WINDOW *);
void __sync(WINDOW *);
int __timeout(int);
int __touchline(WINDOW *, int, int, int);
int __touchwin(WINDOW *);
int __unripoffline(int (*)(WINDOW *, int));
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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