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/* $Header: fontstruct.h,v 1.10 91/07/22 15:37:41 keith Exp $ */
/***********************************************************
Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Digital or MIT not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
@(#)fontstruct.h 3.2 91/04/15
******************************************************************/
#ifndef FONTSTR_H
#define FONTSTR_H
#ifdef XSERVER
#include <X11/Xproto.h>
#else
#include "Xstuff.h"
#endif
#include "font.h"
/*
* This version of the server font data strucutre is only for describing
* the in memory data structure. The file structure is not necessarily a
* copy of this. That is up to the compiler and the OS layer font loading
* machinery.
*/
#define GLYPHPADOPTIONS 4 /* 1, 2, 4, or 8 */
typedef enum {
Linear8Bit, TwoD8Bit, Linear16Bit, TwoD16Bit
} FontEncoding;
typedef struct _FontProp {
long name;
intptr_t value; /* large enough to hole an 'int' or 'void *' */
} FontPropRec;
typedef struct _FontResolution {
unsigned short x_resolution;
unsigned short y_resolution;
unsigned short point_size;
} FontResolutionRec;
typedef struct _ExtentInfo {
DrawDirection drawDirection;
int fontAscent;
int fontDescent;
int overallAscent;
int overallDescent;
int overallWidth;
int overallLeft;
int overallRight;
} ExtentInfoRec;
typedef struct _CharInfo {
xCharInfo metrics; /* info preformatted for Queries */
char *bits; /* pointer to glyph image */
} CharInfoRec;
/*
* Font is created at font load time. It is specific to a single encoding.
* e.g. not all of the glyphs in a font may be part of a single encoding.
*/
typedef struct _FontInfo {
unsigned short firstCol;
unsigned short lastCol;
unsigned short firstRow;
unsigned short lastRow;
unsigned short defaultCh;
unsigned int noOverlap:1;
unsigned int terminalFont:1;
unsigned int constantMetrics:1;
unsigned int constantWidth:1;
unsigned int inkInside:1;
unsigned int inkMetrics:1;
unsigned int allExist:1;
unsigned int drawDirection:2;
unsigned int cachable:1;
unsigned int anamorphic:1;
short maxOverlap;
short pad;
xCharInfo maxbounds;
xCharInfo minbounds;
xCharInfo ink_maxbounds;
xCharInfo ink_minbounds;
short fontAscent;
short fontDescent;
int nprops;
FontPropPtr props;
char *isStringProp;
} FontInfoRec;
typedef struct _Font {
int refcnt;
FontInfoRec info;
char bit;
char byte;
char glyph;
char scan;
fsBitmapFormat format;
int (*get_glyphs) ( /* font, count, chars, encoding, count, glyphs */ );
int (*get_metrics) ( /* font, count, chars, encoding, count, glyphs */ );
int (*get_bitmaps) (/* client, font, flags, ranges, nranges,
nextents, extents */ );
int (*get_extents) (/* client, font, format, flags, ranges,
nranges, nglyphs, offsets, glyphs */ );
void (*unload_font) ( /* font */ );
FontPathElementPtr fpe;
pointer svrPrivate;
pointer fontPrivate;
pointer fpePrivate;
int maxPrivate;
pointer *devPrivates;
} FontRec;
extern Bool _FontSetNewPrivate (/* pFont, n, ptr */);
extern int AllocateFontPrivateIndex ();
#define FontGetPrivate(pFont,n) ((n) > (pFont)->maxPrivate ? (pointer) 0 : \
(pFont)->devPrivates[n])
#define FontSetPrivate(pFont,n,ptr) ((n) > (pFont)->maxPrivate ? \
_FontSetNewPrivate (pFont, n, ptr) : \
((((pFont)->devPrivates[n] = (ptr)) != 0) || TRUE))
typedef struct _FontNames {
int nnames;
int size;
int *length;
char **names;
} FontNamesRec;
/* External view of font paths */
typedef struct _FontPathElement {
int name_length;
char *name;
int type;
int refcount;
pointer private;
} FontPathElementRec;
typedef struct _FPEFunctions {
int (*name_check) ( /* name */ );
int (*init_fpe) ( /* fpe */ );
int (*reset_fpe) ( /* fpe */ );
int (*free_fpe) ( /* fpe */ );
int (*open_font) ( /* client, fpe, flags, name, namelen, format,
fid, ppfont, alias */ );
int (*close_font) ( /* pfont */ );
int (*list_fonts) ( /* client, fpe, pattern, patlen, maxnames,
paths */ );
int (*start_list_fonts_with_info) ( /* client, fpe, name, namelen,
maxnames, data */ );
int (*list_next_font_with_info) ( /* client, fpe, name, namelen,
info, num, data */ );
int (*wakeup_fpe) ( /* fpe, mask */ );
int (*client_died) ( /* client, fpe */ );
} FPEFunctionsRec, FPEFunctions;
extern int InitFPETypes();
/*
* Various macros for computing values based on contents of
* the above structures
*/
#define GLYPHWIDTHPIXELS(pci) \
((pci)->metrics.rightSideBearing - (pci)->metrics.leftSideBearing)
#define GLYPHHEIGHTPIXELS(pci) \
((pci)->metrics.ascent + (pci)->metrics.descent)
#define GLYPHWIDTHBYTES(pci) (((GLYPHWIDTHPIXELS(pci))+7) >> 3)
#define GLYPHWIDTHPADDED(bc) (((bc)+7) & ~0x7)
#define BYTES_PER_ROW(bits, nbytes) \
((nbytes) == 1 ? (((bits)+7)>>3) /* pad to 1 byte */ \
:(nbytes) == 2 ? ((((bits)+15)>>3)&~1) /* pad to 2 bytes */ \
:(nbytes) == 4 ? ((((bits)+31)>>3)&~3) /* pad to 4 bytes */ \
:(nbytes) == 8 ? ((((bits)+63)>>3)&~7) /* pad to 8 bytes */ \
: 0)
#define BYTES_FOR_GLYPH(ci,pad) (GLYPHHEIGHTPIXELS(ci) * \
BYTES_PER_ROW(GLYPHWIDTHPIXELS(ci),pad))
/*
* Macros for computing different bounding boxes for fonts; from
* the font protocol
*/
#define FONT_MAX_ASCENT(pi) ((pi)->fontAscent > (pi)->ink_maxbounds.ascent ? \
(pi)->fontAscent : (pi)->ink_maxbounds.ascent)
#define FONT_MAX_DESCENT(pi) ((pi)->fontDescent > (pi)->ink_maxbounds.descent ? \
(pi)->fontDescent : (pi)->ink_maxbounds.descent)
#define FONT_MAX_HEIGHT(pi) (FONT_MAX_ASCENT(pi) + FONT_MAX_DESCENT(pi))
#define FONT_MIN_LEFT(pi) ((pi)->ink_minbounds.leftSideBearing < 0 ? \
(pi)->ink_minbounds.leftSideBearing : 0)
#define FONT_MAX_RIGHT(pi) ((pi)->ink_maxbounds.rightSideBearing > \
(pi)->ink_maxbounds.characterWidth ? \
(pi)->ink_maxbounds.rightSideBearing : \
(pi)->ink_maxbounds.characterWidth)
#define FONT_MAX_WIDTH(pi) (FONT_MAX_RIGHT(pi) - FONT_MIN_LEFT(pi))
#endif /* FONTSTR_H */
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