/* $XConsortium: attr.h,v 5.6 94/04/17 20:41:38 hersh Exp $ */

/***********************************************************

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Copyright 1989, 1990, 1991 by Sun Microsystems, Inc. 

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******************************************************************/

#ifndef PHG_ATTR_H_INCLUDED
#define	PHG_ATTR_H_INCLUDED

typedef caddr_t *	Phg_attr_avlist;
typedef unsigned	Phg_attr_attribute;		/* 32 bit quantity */
/* Phg_attr_avlist is not an array of Phg_attr_attributes, because it is an array
 * of intermixed attributes and values.
 */

/* This macro is machine dependent in that it assumes
 * the cardinality will be in the lower 5 bits of the type-cardinality
 * pair.
 */
#define	PHG_ATTR_TYPE(base_type, cardinality) \
    (((((unsigned)(base_type)) & 0x07f) << 5) |	\
     (((unsigned)(cardinality)) & 0x0f))

/* Base types in the range PHG_ATTR_BASE_UNUSED_FIRST
 * to PHG_ATTR_BASE_UNUSED_LAST are available for
 * client use.
 */
#define	PHG_ATTR_BASE_UNUSED_FIRST		0
#define	PHG_ATTR_BASE_UNUSED_LAST		31
/* Base types 32 through 63 are
 * reserved for future use.
 */
#define	PHG_ATTR_BASE_FIRST			64

typedef enum {
    PHG_ATTR_BASE_INT		= PHG_ATTR_BASE_FIRST,
    PHG_ATTR_BASE_INT_PAIR	= PHG_ATTR_BASE_FIRST + 1,
    PHG_ATTR_BASE_X		= PHG_ATTR_BASE_FIRST + 2,
    PHG_ATTR_BASE_INDEX_X	= PHG_ATTR_BASE_FIRST + 3,
    PHG_ATTR_BASE_Y		= PHG_ATTR_BASE_FIRST + 4,
    PHG_ATTR_BASE_INDEX_Y	= PHG_ATTR_BASE_FIRST + 5,
    PHG_ATTR_BASE_XY		= PHG_ATTR_BASE_FIRST + 6,
    PHG_ATTR_BASE_INDEX_XY	= PHG_ATTR_BASE_FIRST + 7,
    PHG_ATTR_BASE_BOOLEAN	= PHG_ATTR_BASE_FIRST + 8,
    PHG_ATTR_BASE_ENUM		= PHG_ATTR_BASE_FIRST + 9,
    PHG_ATTR_BASE_CHAR		= PHG_ATTR_BASE_FIRST + 10,
    PHG_ATTR_BASE_STRING	= PHG_ATTR_BASE_FIRST + 11,
    PHG_ATTR_BASE_RECT_PTR	= PHG_ATTR_BASE_FIRST + 15,
    PHG_ATTR_BASE_OPAQUE	= PHG_ATTR_BASE_FIRST + 16,
    PHG_ATTR_BASE_NO_VALUE	= PHG_ATTR_BASE_FIRST + 17,
    PHG_ATTR_BASE_AV		= PHG_ATTR_BASE_FIRST + 18,
    PHG_ATTR_BASE_FUNCTION_PTR	= PHG_ATTR_BASE_FIRST + 19,
    PHG_ATTR_BASE_ICON_PTR	= PHG_ATTR_BASE_FIRST + 20,
    PHG_ATTR_BASE_INT_TRIPLE	= PHG_ATTR_BASE_FIRST + 23,
    PHG_ATTR_BASE_LONG		= PHG_ATTR_BASE_FIRST + 24,
    PHG_ATTR_BASE_SHORT		= PHG_ATTR_BASE_FIRST + 25
} Phg_attr_base_type;

/* Clients of the attribute value package should use
 * Phg_attr_base_cardinality elements to define the base type
 * and cardinality of their attributes.
 */  
typedef enum {
    PHG_ATTR_INT		= PHG_ATTR_TYPE(PHG_ATTR_BASE_INT, 1),
    PHG_ATTR_INT_PAIR		= PHG_ATTR_TYPE(PHG_ATTR_BASE_INT_PAIR, 2),
    PHG_ATTR_INT_TRIPLE		= PHG_ATTR_TYPE(PHG_ATTR_BASE_INT_TRIPLE, 3),
    PHG_ATTR_X			= PHG_ATTR_TYPE(PHG_ATTR_BASE_X, 1),
    PHG_ATTR_INDEX_X		= PHG_ATTR_TYPE(PHG_ATTR_BASE_INDEX_X, 2),
    PHG_ATTR_Y			= PHG_ATTR_TYPE(PHG_ATTR_BASE_Y, 1),
    PHG_ATTR_INDEX_Y		= PHG_ATTR_TYPE(PHG_ATTR_BASE_INDEX_Y, 2),
    PHG_ATTR_XY			= PHG_ATTR_TYPE(PHG_ATTR_BASE_XY, 2),
    PHG_ATTR_INDEX_XY		= PHG_ATTR_TYPE(PHG_ATTR_BASE_INDEX_XY, 3),
    PHG_ATTR_BOOLEAN		= PHG_ATTR_TYPE(PHG_ATTR_BASE_BOOLEAN, 1),
    PHG_ATTR_ENUM		= PHG_ATTR_TYPE(PHG_ATTR_BASE_ENUM, 1),
    PHG_ATTR_CHAR		= PHG_ATTR_TYPE(PHG_ATTR_BASE_CHAR, 1),
    PHG_ATTR_STRING		= PHG_ATTR_TYPE(PHG_ATTR_BASE_STRING, 1),
    PHG_ATTR_RECT_PTR		= PHG_ATTR_TYPE(PHG_ATTR_BASE_RECT_PTR, 1),
    PHG_ATTR_OPAQUE		= PHG_ATTR_TYPE(PHG_ATTR_BASE_OPAQUE, 1),
    PHG_ATTR_NO_VALUE		= PHG_ATTR_TYPE(PHG_ATTR_BASE_NO_VALUE, 0),
    PHG_ATTR_AV			= PHG_ATTR_TYPE(PHG_ATTR_BASE_AV, 1),
    PHG_ATTR_FUNCTION_PTR	= PHG_ATTR_TYPE(PHG_ATTR_BASE_FUNCTION_PTR, 1),
    PHG_ATTR_ICON_PTR		= PHG_ATTR_TYPE(PHG_ATTR_BASE_ICON_PTR, 1),
    PHG_ATTR_LONG		= PHG_ATTR_TYPE(PHG_ATTR_BASE_LONG, 1),
    PHG_ATTR_SHORT		= PHG_ATTR_TYPE(PHG_ATTR_BASE_SHORT, 1)
} Phg_attr_base_cardinality;

/* Note that this macro is machine dependent in that it assumes the
 * base_type-cardinality pair will be in the lower 13 bits of the 
 * list_type-base_cardinality pair.
 */
#define	PHG_ATTR_LIST_OF(list_type, list_ptr_type, base_cardinality) \
    (((((unsigned)(list_type)) & 0x3) << 14) | \
     (((unsigned)(list_ptr_type) & 0x1) << 13) | \
     (((unsigned)(base_cardinality)) & 0x3fff))

typedef enum {
    PHG_ATTR_LIST_IS_INLINE	= 0,
    PHG_ATTR_LIST_IS_PTR	= 1
} Phg_attr_list_ptr_type;

#define	PHG_ATTR_LIST_INLINE(list_type, base_cardinality)	\
    PHG_ATTR_LIST_OF(list_type, PHG_ATTR_LIST_IS_INLINE, base_cardinality)
    
#define	PHG_ATTR_LIST_PTR(list_type, base_cardinality)	\
    PHG_ATTR_LIST_OF(list_type, PHG_ATTR_LIST_IS_PTR, base_cardinality)
    
typedef enum {
    /* Note that PHG_ATTR_NONE must have a value of zero,
     * since a no-list type is assumed for each of the
     * types in Phg_attr_base_cardinality.
     */
    PHG_ATTR_NONE	= 0,
    PHG_ATTR_RECURSIVE	= 1,
    PHG_ATTR_NULL	= 2,
    PHG_ATTR_COUNTED	= 3
} Phg_attr_list_type;

/*
 * Note that 0 is NEVER a valid package id.
 *
 * The range from PHG_ATTR_PKG_UNUSED_FIRST to
 * PHG_ATTR_PKG_UNUSED_LAST is reserved for non-Sun packages.
 */
#define	PHG_ATTR_PKG_UNUSED_FIRST	1
#define PHG_ATTR_PKG_UNUSED_LAST	31
/* 32 through 63 are reserved for 
 * future use.
 */
#define	PHG_ATTR_PKG_FIRST		64
/* #define	PHG_ATTR_PKG_LAST		127 */
/* 128 through 255 are spare */
    
typedef enum {
    PHG_ATTR_PKG_ZERO	= 0,
    PHG_ATTR_PKG_GENERIC	= PHG_ATTR_PKG_FIRST,
    PHG_ATTR_PKG_LAST	= PHG_ATTR_PKG_FIRST + 18
} Phg_attr_pkg;
    /* Change PHG_ATTR_PKG_LAST to be EQUAL to the last legal pkg id. */
    /* The procedure counter(), called by phg_attr_make, aborts if */
    /* PKG_ID > PHG_ATTR_PKG_LAST */
    /* PKG name should also be added to phg_attr_names[] in phg_attr.c */

/* An attribute is composed of 
 * pkg     ( 8 bits): id of package that uses the attribute
 * ordinal ( 8 bits): ordinal number of the attribute
 * type    (16 bits): list type, list pointer type, base type, and cardinality
 */
#define	PHG_ATTR(pkg, type, ordinal)	\
    ( ((((unsigned)(pkg))	& 0x7f) << 24) | \
      ((((unsigned)(ordinal))	& 0xff) << 16) | \
       (((unsigned)(type))	& 0xefef)	)

typedef union {
    struct {
	unsigned		pkg		: 8;
	unsigned		ordinal		: 8;
	unsigned		list_type	: 2;
	unsigned		list_ptr_type	: 1;
	unsigned		spare1		: 1;	/* unused */
	unsigned		base_type	: 7;
	unsigned		spare2		: 1;	/* unused */
	unsigned		cardinality	: 4;
    } 			info;
    Phg_attr_attribute	code;
} Phg_attr_union;

/* Generic attributes
 */
typedef enum {
    PHG_ATTR_LIST = PHG_ATTR(PHG_ATTR_PKG_GENERIC, PHG_ATTR_LIST_PTR(PHG_ATTR_RECURSIVE, PHG_ATTR_NO_VALUE), 0)
} Phg_attr_generic;

/* PHG_ATTR_STANDARD_SIZE is large enough to allow for 
 * most attribute-value lists.
 */
#define	PHG_ATTR_STANDARD_SIZE	250

#ifdef notdef
/* Note that in these macros, attr must not be 
 * in a register or be a constant.
 * Since this is deemed too restrictive, we use
 * shifting & masking instead.  
 */
#define PHG_ATTR_UNION(attr)	((Phg_attr_union *) &((Phg_attr_attribute) (attr)))
#define	PHG_ATTR_INFO(attr)		(PHG_ATTR_UNION(attr)->info)
#define	PHG_ATTR_CODE(attr)		(PHG_ATTR_UNION(attr)->code)
#define	PHG_ATTR_LIST_TYPE(attr)	(PHG_ATTR_INFO(attr).list_type)
#define	PHG_ATTR_LIST_PTR_TYPE(attr)	(PHG_ATTR_INFO(attr).list_ptr_type)
#define	PHG_ATTR_BASE_TYPE(attr)	(PHG_ATTR_INFO(attr).base_type)
#define	PHG_ATTR_CARDINALITY(attr)	(PHG_ATTR_INFO(attr).cardinality)
#define	PHG_ATTR_PKG(attr)		(PHG_ATTR_INFO(attr).pkg)
#define	PHG_ATTR_ORDINAL(attr)	(PHG_ATTR_INFO(attr).ordinal)
#endif /* notdef */

#define	PHG_ATTR_CODE(attr)		((unsigned)(attr))

#define	PHG_ATTR_PKG(attr)	\
	((Phg_attr_pkg) ((PHG_ATTR_CODE(attr) >> 24) & 0xFF))

#define PHG_ATTR_VALID_PKG_ID(attr)		\
	(((int)PHG_ATTR_PKG(attr)) > ((int) PHG_ATTR_PKG_ZERO) && \
	 ((int)PHG_ATTR_PKG(attr)) <= ((int)PHG_ATTR_PKG_LAST))

#define	PHG_ATTR_ORDINAL(attr)	\
	((unsigned) ((PHG_ATTR_CODE(attr) >> 16) & 0xFF))

#define	PHG_ATTR_LIST_TYPE(attr)	\
	((Phg_attr_list_type) ((PHG_ATTR_CODE(attr) >> 14) & 0x3))

#define	PHG_ATTR_LIST_PTR_TYPE(attr)	\
	((Phg_attr_list_ptr_type) ((PHG_ATTR_CODE(attr) >> 13) & 0x1))

#define	PHG_ATTR_BASE_TYPE(attr)	\
	((Phg_attr_base_type) ((PHG_ATTR_CODE(attr) >> 5) & 0x7F))

#define	PHG_ATTR_CARDINALITY(attr)	\
	((unsigned) (PHG_ATTR_CODE(attr) & 0xF))


/* Character unit support */

#ifdef	lint
/* The following #ifndef fixes kernel lint warnings, but is pretty strange */
#ifndef lint
extern	void	phg_attr_replace_cu();
extern	int	phg_attr_cu_to_x();
extern	int	phg_attr_cu_to_y();
#endif
#else	/* lint */
#define phg_attr_replace_cu(avlist, font, lmargin, tmargin, rgap) \
    phg_attr_rc_units_to_pixels(avlist, font->pf_defaultsize.x, \
	font->pf_defaultsize.y, lmargin, tmargin, 0, rgap)
    
#define phg_attr_cu_to_x(encoded_value, font, left_margin) \
    phg_attr_rc_unit_to_x(encoded_value, font->pf_defaultsize.x, left_margin, 0)

#define phg_attr_cu_to_y(encoded_value, font, top_margin, row_gap) \
    phg_attr_rc_unit_to_y(encoded_value, font->pf_defaultsize.y, top_margin, row_gap)
#endif	/* lint */

typedef enum {
    PHG_ATTR_CU_POSITION	= 0x0,		/* bit 29 is off */
    PHG_ATTR_CU_LENGTH	= 0x20000000	/* bit 29 is on */

} Phg_attr_cu_type;

#define	PHG_ATTR_CU_TAG		0x80000000
#define PHG_ATTR_PIXEL_OFFSET	0x00008000

#define	PHG_ATTR_CU(unit, n)	\
   (((unsigned)(unit)) | (((unsigned)(n) & 0x1FFF) << 16) |	\
    PHG_ATTR_CU_TAG | PHG_ATTR_PIXEL_OFFSET)
    
#define	PHG_ATTR_CU_MASK		0xC0000000
#define	PHG_ATTR_CU_TYPE(n)		\
    ((Phg_attr_cu_type) ((n) & (unsigned) (PHG_ATTR_CU_LENGTH)))

/* phg_attr_is_cu(n) returns non-zero if n has 
 * been encoded using PHG_ATTR_CU()
 */
#define	phg_attr_is_cu(n)		(((n) & PHG_ATTR_CU_MASK) == PHG_ATTR_CU_TAG)

/* Macros for position including
 * margins.
 */
#define	PHG_ATTR_COL(n)		PHG_ATTR_CU(PHG_ATTR_CU_POSITION, n)
#define	PHG_ATTR_ROW(n)		PHG_ATTR_CU(PHG_ATTR_CU_POSITION, n)

/* Macros for length excluding
 * margins.
 */
#define	PHG_ATTR_COLS(n)	PHG_ATTR_CU(PHG_ATTR_CU_LENGTH, n)
#define	PHG_ATTR_ROWS(n)	PHG_ATTR_CU(PHG_ATTR_CU_LENGTH, n)
#define	PHG_ATTR_CHARS(n)	PHG_ATTR_CU(PHG_ATTR_CU_LENGTH, n)
#define	PHG_ATTR_LINES(n)	PHG_ATTR_CU(PHG_ATTR_CU_LENGTH, n)
   

/* phg_attr_make() is not interested in the
 * count from phg_attr_make_count().
 */
#define	phg_attr_make(array, max_size, argv)	\
    phg_attr_make_count(array, max_size, argv, (int *)0)

/* Following are useful for multi-pass avlist processing. */
#define	PHG_ATTR_NOP(attr)					\
 	( (((unsigned)PHG_ATTR_PKG_NOP) << 24) | (PHG_ATTR_CODE(attr) & 0xffffff) )
#define	PHG_ATTR_CONSUME(attr)	(attr) = ((caddr_t)PHG_ATTR_NOP(attr))

#define	phg_attr_skip(attr, argv)	\
    ((PHG_ATTR_LIST_TYPE((attr)) == PHG_ATTR_NONE) \
	? (argv) + PHG_ATTR_CARDINALITY((attr)) \
	: ((Phg_attr_avlist)phg_attr_skip_value((Phg_attr_attribute)(attr), (argv))))

#define	phg_attr_next(attrs)	phg_attr_skip((*(attrs)), ((attrs)+1))

#ifndef lint
/* Available functions
 */
extern Phg_attr_avlist	phg_attr_create_list();
extern Phg_attr_avlist	phg_attr_create();
extern Phg_attr_avlist	phg_attr_make_count();
extern int		phg_attr_copy();
extern int		phg_attr_count();
extern char 	       *phg_attr_sprint();
extern void		phg_attr_free();
extern Phg_attr_avlist	phg_attr_skip_value();
#endif /* lint */
#endif