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/*
afm.h
Application Kit, Release 3.1
Copyright (c) 1988, 1989, 1990, NeXT, Inc. All rights reserved.
*/
#ifndef AFM_H
#define AFM_H
/* font attributes to ask the server for */
#define NX_FONTHEADER 1
#define NX_FONTMETRICS 2
#define NX_FONTWIDTHS 4
#define NX_FONTCHARDATA 8
#define NX_FONTKERNING 16
#define NX_FONTCOMPOSITES 32
#ifdef KANJI
#define NX_BASEFONTMAPPING -1
#define NX_88MAPPING 2
#define NX_ESCAPEMAPPING 3 /* not implemented */
#define NX_17MAPPING 4
#define NX_97MAPPING 5
#define NX_SUBSVECTORMAPPING 6 /* not implemented */
/* The following defines are for EUC Japanese encodings.*/
/* The "GR" encoding may change after the Alpha version.*/
#define NX_SS2 (0x8e)
#define NX_GR (0xa0)
/* The following macro computes character width from character code & font metrics information.*/
#define NX_WCHARWIDTH(fm,code) \
( fm->isBaseFont ? \
(fm->widths[(code)&0xff]) + ((code)&0xFF00 ? fm->widths[((code)>>8)&0xff] : 0.0) : \
((!((code)&0xff00)&&((code)&0x80)) ? \
(fm->widths[(fm->widthsIndex[NX_GR]<<8)|((code)&0xff)]) : \
(fm->widths[(fm->widthsIndex[((code)>>8)&0xff]<<8)|((code)&0xff)])))
#endif
typedef struct { /* per character info */
short charCode; /* character code, -1 if unencoded */
unsigned char numKernPairs; /* #kern pairs starting with this char */
unsigned char reserved;
float xWidth; /* width in X of this character */
int name; /* name - an index into stringTable */
float bbox[4]; /* character bbox */
int kernPairIndex; /* index into NXFontMetrics.kerns array */
} NXCharMetrics;
typedef struct { /* elements of the ligature array */
/* all ligatures go here, regardless of if the chars are encoded */
int firstCharIndex; /* index into NXFontMetrics.charMetrics */
int secondCharIndex; /* index into NXFontMetrics.charMetrics */
int ligatureIndex; /* index into NXFontMetrics.charMetrics */
} NXLigature;
typedef struct { /* elements of the encoded ligature array */
/* ligatures only go here if all three chars are encoded */
unsigned char firstChar; /* char encoding of first char */
unsigned char secondChar; /* char encoding of second char */
unsigned char ligatureChar; /* char encoding of ligature */
unsigned char reserved;
} NXEncodedLigature;
typedef struct { /* elements of the kern pair array */
int secondCharIndex; /* index into NXFontMetrics.charMetrics */
float dx; /* displacement relative to first char */
float dy;
} NXKernPair;
typedef struct { /* elements of the kern X pair array */
int secondCharIndex; /* index into NXFontMetrics.charMetrics */
float dx; /* X displacement relative to first char */
/* Y displacement is implicitly 0 for these */
} NXKernXPair;
typedef struct { /* elements of the track kern array */
int degree; /* degree of tightness */
float minPointSize; /* parameters for this track */
float minKernAmount;
float maxPointSize;
float maxKernAmount;
} NXTrackKern;
typedef struct { /* a composite char */
int compCharIndex; /* index into NXFontMetrics.charMetrics */
int numParts; /* number of parts making up this char */
int firstPartIndex; /* index of first part in */
/* NXFontMetrics.compositeCharParts */
} NXCompositeChar;
typedef struct { /* elements of the composite char array */
int partIndex; /* index into NXFontMetrics.charMetrics */
float dx; /* displacement of part */
float dy;
} NXCompositeCharPart;
/*
* Font information from Adobe Font Metrics file
*
* Do NOT embed this structure in your data structures, length may change.
*/
typedef struct _NXFontMetrics {
char *formatVersion; /* version of afm file format */
char *name; /* name of font for findfont */
char *fullName; /* full name of font */
char *familyName; /* "font family" name */
char *weight; /* weight of font */
float italicAngle; /* degrees ccw from vertical */
char isFixedPitch; /* is the font mono-spaced? */
char isScreenFont; /* is the font a screen font? */
short screenFontSize; /* If it is, how big is it? */
float fontBBox[4]; /* bounding box (llx lly urx ury) */
float underlinePosition; /* dist from basline for underlines */
float underlineThickness; /* thickness of underline stroke */
char *version; /* version identifier */
char *notice; /* trademark or copyright */
char *encodingScheme; /* default encoding vector */
float capHeight; /* top of 'H' */
float xHeight; /* top of 'x' */
float ascender; /* top of 'd' */
float descender; /* bottom of 'p' */
#ifdef __m68k__
short hasYWidths; /* do any chars have non-0 y width? */
#endif
float *widths; /* character widths in x */
unsigned int widthsLength;
char *strings; /* table of strings and other info */
unsigned int stringsLength;
#ifndef __m68k__
short hasYWidths;
#endif
char hasXYKerns; /* Do any of the kern pairs have nonzero dy? */
char reserved;
short *encoding; /* 256 offsets into charMetrics */
float *yWidths; /* character widths in y. NOT in encoding */
/* order, but a parallel array to the charMetrics array */
NXCharMetrics *charMetrics; /* array of NXCharMetrics */
int numCharMetrics; /* num elements */
NXLigature *ligatures; /* array of NXLigatures */
int numLigatures; /* num elements */
NXEncodedLigature *encLigatures; /* array of NXEncodedLigatures */
int numEncLigatures; /* num elements */
union {
NXKernPair *kernPairs; /* array of NXKernPairs */
NXKernXPair *kernXPairs; /* array of NXKernXPairs */
} kerns;
int numKernPairs; /* num elements */
NXTrackKern *trackKerns; /* array of NXTrackKerns */
int numTrackKerns; /* num elements */
NXCompositeChar *compositeChars; /* array of NXCompositeChar */
int numCompositeChars; /* num elements */
NXCompositeCharPart *compositeCharParts; /* array of NXCompositeCharPart */
int numCompositeCharParts; /* num elements */
#ifdef KANJI
char isBaseFont; /* true if base font */
#ifndef __m68k__
char hasCharWidth;
#endif
int mappingScheme; /* for composite font only */
int metricsSet; /* for vertical writing */
int characters; /* number of character defined */
float charWidth[2]; /* fixed pitch font width */
#ifdef __m68k__
char hasCharWidth;
#endif
char *characterSet; /* font specific/ Do not refer */
unsigned char widthsIndex[256]; /* index for widths */
unsigned char maxIndex; /* maximum index */
short cfFlags; /* flags for composite font */
void *_compositeFontInfo;
int _reserved[4]; /* for future use */
#endif
} NXFontMetrics;
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.