xref: /src/lib/libcurses/curses_private.h

/*	$NetBSD: curses_private.h,v 1.1 2000/04/11 13:57:09 blymn Exp $	*/

/*-
 * Copyright (c) 1998-2000 Brett Lymn
 *                         (blymn (at) baea.com.au, brett_lymn (at) 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 withough 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.
 *
 *
 */

/* Private structure definitions for curses. */
/*
 * A window 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 {
#define __CHARTEXT	0x000000ff	/* bits for 8-bit characters */
	wchar_t	ch;			/* Character */
#define __NORMAL	0x00000000	/* Added characters are normal. */
#define __STANDOUT	0x00010000	/* Added characters are standout. */
#define __UNDERSCORE	0x00020000	/* Added characters are underscored. */
#define __REVERSE	0x00040000	/* Added characters are reverse
					   video. */
#define __BLINK		0x00080000	/* Added characters are blinking. */
#define __DIM		0x00100000	/* Added characters are dim. */
#define __BOLD		0x00200000	/* Added characters are bold. */
#define __BLANK		0x00400000	/* Added characters are blanked. */
#define __PROTECT	0x00800000	/* Added characters are protected. */
#define __ALTCHARSET	0x01000000	/* Added characters are ACS */
#define __COLOR		0xee000000	/* Color bits */
#define __ATTRIBUTES	0xefff0000	/* All 8-bit attribute bits */
#define __TERMATTR	0x00fc0000	/* Termcap attribute modes
					   (reverse, blinking, dim, bold,
					   blanked & protected */
	attr_t	attr;			/* Attributes */
};

#define __LDATASIZE	(sizeof(__LDATA))

struct __line {
#define	__ISDIRTY	0x01		/* Line is dirty. */
#define __ISPASTEOL	0x02		/* Cursor is past end of line */
#define __FORCEPAINT	0x04		/* Force a repaint of the line */
	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. */
	short ch_off;			/* x offset for firstch/lastch. */
	__LINE **lines;			/* 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 */
	unsigned int flags;
	int	delay;			/* delay for getch() */
	attr_t	wattr;			/* Character attributes */
};