/*@z37.c:Font Service:Declarations@*******************************************/
/* */
/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.19) */
/* COPYRIGHT (C) 1991, 2000 Jeffrey H. Kingston */
/* */
/* Jeffrey H. Kingston (jeff@cs.usyd.edu.au) */
/* Basser Department of Computer Science */
/* The University of Sydney 2006 */
/* AUSTRALIA */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either Version 2, or (at your option) */
/* any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA */
/* */
/* FILE: z37.c */
/* MODULE: Font Service */
/* EXTERNS: FontInit(), FontDefine(), FontChange(), FontWordSize(), */
/* FontSize(), FontHalfXHeight(), FontEncoding(), */
/* FontMapping(), FontFamilyAndFace(), FontNeeded() */
/* */
/* This module implements fonts, using encoding vectors and Adobe font */
/* metrics files (.AFM files, version 2). */
/* */
/*****************************************************************************/
#include "externs.h"
#define DEFAULT_XHEIGHT 500 /* the default XHeight if font has none */
#define NO_FONT 0 /* the not-a-font font number */
#define SZ_DFT 1000 /* default lout size is 50p */
#define INIT_FINFO_SIZE 100 /* initial number of sized fonts set aside */
/*****************************************************************************/
/* */
/* these definitions have been placed in "externs" because z24.c needs them */
/* */
/* struct metrics { */
/* SHORT_LENGTH up; */
/* SHORT_LENGTH down; */
/* SHORT_LENGTH left; */
/* SHORT_LENGTH right; */
/* SHORT_LENGTH last_adjust; */
/* }; */
/* */
/* typedef struct font_rec { */
/* struct metrics *size_table; metrics of sized fonts */
/* FULL_CHAR *lig_table; ligatures */
/* OBJECT font_table; record of sized fonts */
/* OBJECT original_font; font rec before resizing */
/* SHORT_LENGTH underline_pos; position of underline */
/* SHORT_LENGTH underline_thick; thickness of underline */
/* unsigned short *kern_table; first kerning chars */
/* FULL_CHAR *kern_chars; second kerning chars */
/* unsigned char *kern_value; points into kern_lengths */
/* SHORT_LENGTH *kern_sizes; sizes of kernings */
/* } FONT_INFO; */
/* */
/*****************************************************************************/
int font_curr_page; /* current page number */
FONT_INFO *finfo; /* all the font table info */
static int finfo_size; /* current finfo array size */
static OBJECT font_root; /* root of tree of fonts */
static OBJECT font_used; /* fonts used on this page */
static FONT_NUM font_count; /* number of sized fonts */
static int font_seqnum; /* unique number for a font */
/*@::FontInit(), FontDebug()@*************************************************/
/* */
/* FontInit() */
/* */
/* Initialise this module. */
/* */
/*****************************************************************************/
void FontInit(void)
{ debug0(DFT, D, "FontInit()");
font_curr_page = 1;
font_count = 0;
New(font_root, ACAT);
New(font_used, ACAT);
font_seqnum = 0;
finfo = (FONT_INFO *) malloc(INIT_FINFO_SIZE * sizeof(FONT_INFO));
finfo_size = INIT_FINFO_SIZE;
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, 1, INIT_FINFO_SIZE * sizeof(FONT_INFO)));
debug0(DFT, D, "FontInit returning.");
}
/*****************************************************************************/
/* */
/* FontDebug() */
/* */
/* Print out font tree (not currectly used). */
/* */
/*****************************************************************************/
#if DEBUG_ON
static void FontDebug(void)
{ OBJECT family, face, filename, link, flink; int i;
assert(font_root!=nilobj && type(font_root)==ACAT, "FontDebug: font_root!");
for( link = Down(font_root); link != font_root; link = NextDown(link) )
{ Child(family, link);
assert( is_word(type(family)), "FontDebug: family!" );
fprintf(stderr, "family %s:\n", string(family));
for( flink = Down(family); flink != family; flink = NextDown(flink) )
{ Child(face, flink);
assert( is_word(type(face)), "FontDebug: face!" );
fprintf(stderr, " face %s in file ", string(face));
assert( Down(face) != face, "FontDebug: Down(face)!");
Child(filename, Down(face));
assert( is_word(type(filename)), "FontDebug: filename!" );
fprintf(stderr, "%s\n", string(filename));
}
}
for( i = 1; i <= font_count; i++ )
fprintf(stderr, " finfo[%d].font_table = %s\n", i,
EchoObject(finfo[i].font_table));
} /* end FontDebug */
#endif
/*@::FontDefine()@************************************************************/
/* */
/* FontDefine(family, face, inside) */
/* */
/* Insert a font defined by fontdef <family> <face> { <inside> }, where */
/* <inside> ::= fontname AFMfilename LCMfilename recode */
/* */
/*****************************************************************************/
static void ReadFont(OBJECT face, OBJECT err);
void FontDefine(OBJECT family, OBJECT face, OBJECT inside)
{ OBJECT font_name, AFMfilename, LCMfilename, recode;
OBJECT short_name, link, y, val[5]; int i;
debug3(DFT, D, "FontDefine( %s, %s, %s )", string(family),
string(face), EchoObject(inside));
/* extract font_name, AFMfilename, LCMfilename, and recode */
if( type(inside) != ACAT )
{ Error(37, 1, "font definition does not contain a sequence of words",
WARN, &fpos(inside));
DisposeObject(inside); return;
}
for( i = 0; Down(inside) != inside && i != 5; i++ )
{ Child(val[i], Down(inside));
DeleteLink(Up(val[i]));
if( type(val[i]) == GAP_OBJ ) DisposeObject(val[i--]);
else if( !is_word(type(val[i])) )
{ Error(37, 2, "font definition contains a non-word", WARN, &fpos(val[i]));
DisposeObject(inside); return;
}
}
if( Down(inside) != inside || i != 4 )
{ Error(37, 3, "font definition does not contain exactly four words",
WARN, &fpos(inside));
DisposeObject(inside); return;
}
font_name = val[0]; AFMfilename = val[1];
LCMfilename = val[2]; recode = val[3];
/* insert family into font tree if not already present */
for( link = Down(font_root); link != font_root; link = NextDown(link) )
{ Child(y, link);
if( StringEqual(string(y), string(family)) )
{ Dispose(family); family = y; break; }
}
if( link == font_root ) Link(font_root, family);
/* insert face into family, or error if already present and different */
for( link = Down(family); link != family; link = NextDown(link) )
{ Child(y, link);
if( StringEqual(string(y), string(face)) )
{ OBJECT other_name, other_AFMname;
Child(other_AFMname, Down(y));
Child(other_name, NextDown(Down(other_AFMname)));
if( StringEqual(string(other_name), string(font_name)) &&
StringEqual(string(other_AFMname), string(AFMfilename)) )
{ debug0(DFT, D, "FontDefine returning: font redefined");
Dispose(face);
return;
}
Error(37, 4, "font %s %s already defined at%s", WARN, &fpos(face),
string(family), string(face), EchoFilePos(&fpos(y)));
debug0(DFT, D, "FontDefine returning: font already defined");
Dispose(face);
return;
}
}
Link(family, face);
/* add AFMfilename as first size of font, and PostScript name as its child */
Link(face, AFMfilename);
short_name = MakeWordTwo(WORD, AsciiToFull("fnt"), StringInt(++font_seqnum),
no_fpos);
Link(AFMfilename, short_name); Link(AFMfilename, font_name);
/* load character mapping file */
if( StringEqual(string(recode), STR_FONT_RECODE) )
{ font_recoded(face) = TRUE;
font_mapping(AFMfilename) = MapLoad(LCMfilename, TRUE);
}
else if( StringEqual(string(recode), STR_FONT_NORECODE) )
{ font_recoded(face) = FALSE;
font_mapping(AFMfilename) = MapLoad(LCMfilename, FALSE);
}
else Error(37, 5, "expecting either Recode or NoRecode here",
FATAL, &fpos(recode));
/* say that this font is currently unused on any page */
font_page(face) = 0;
font_firstpage(face) = FALSE;
/* if initializing run, read the font just to make sure */
if( InitializeAll )
{ ReadFont(face, face);
}
debug0(DFT, D, "FontDefine returning.");
} /* end FontDefine */
/*****************************************************************************/
/* */
/* DebugKernTable(fnum) */
/* */
/* Print debug output of kern table for font fnum. */
/* */
/*****************************************************************************/
#if DEBUG_ON
static void DebugKernTable(FONT_NUM fnum)
{ int i, j;
unsigned short *kt = finfo[fnum].kern_table;
FULL_CHAR *kc = finfo[fnum].kern_chars;
unsigned char *kv = finfo[fnum].kern_value;
SHORT_LENGTH *ks = finfo[fnum].kern_sizes;
debug1(DFT, DD, "DebugKernTable(%d)", fnum);
for( i = 0; i < MAX_CHARS; i++ )
{ if( kt[i] != 0 )
{ debug1(DFT, DD, "kt[%d]:", i);
for( j = kt[i]; kc[j] != '\0'; j++ )
{ debug3(DFT, DD, "KPX %c %c %d", i, kc[j], ks[kv[j]]);
}
}
}
debug1(DFT, DD, "DebugKernTable(%d) returning", fnum);
} /* DebugKernTable */
#endif
/*@::ReadFont()@**************************************************************/
/* */
/* static ReadFont(face, err) */
/* */
/* Read in a font file. Object err is used only for error reporting. */
/* */
/*****************************************************************************/
static void ReadFont(OBJECT face, OBJECT err)
{ OBJECT filename, fontname;
FULL_CHAR buff[MAX_BUFF], command[MAX_BUFF], ch;
int wx, llx, lly, urx, ury, xheight2, i, lnum, ligtop;
float fl_wx, fl_llx, fl_lly, fl_urx, fl_ury, fl_xheight2, fl_under_pos,
fl_under_thick;
int under_pos, under_thick;
BOOLEAN upfound, utfound, xhfound, wxfound, bfound;
BOOLEAN fixed_pitch = FALSE;
FILE_NUM fnum; FILE *fp;
struct metrics *fnt;
FULL_CHAR *lig, ligchar;
unsigned short *kt; FULL_CHAR *kc; unsigned char *kv; SHORT_LENGTH *ks;
OBJECT x;
assert( is_word(type(face)), "ReadFont: !is_word(type(face))!" );
debug1(DFT, DD, "ReadFont( %s, err )", string(face));
/* get a new font number for this font, possibly requiring realloc */
if( ++font_count >= finfo_size )
{ if( font_count > MAX_FONT )
Error(37, 6, "too many different fonts and sizes (maximum is %d)",
FATAL, &fpos(err),MAX_FONT);
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, -1, -finfo_size * sizeof(FONT_INFO)));
finfo_size *= 2;
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, 1, finfo_size * sizeof(FONT_INFO)));
finfo = (FONT_INFO *) realloc(finfo, finfo_size * sizeof(FONT_INFO));
if( finfo == (FONT_INFO *) NULL )
Error(37, 7, "run out of memory when increasing font table size",
FATAL, &fpos(err));
}
/* open the Adobe font metrics (AFM) file of the font */
assert( Down(face) != face, "ReadFont: filename missing!" );
Child(filename, Down(face));
assert( Down(filename) != filename, "ReadFont: filename child missing!" );
debug0(DFS, D, " calling DefineFile from ReadFont");
fnum = DefineFile(string(filename), STR_EMPTY, &fpos(filename),
FONT_FILE, FONT_PATH);
fp = OpenFile(fnum, FALSE, FALSE);
if( fp == NULL )
Error(37, 8, "cannot open font file %s", FATAL, &fpos(filename),
FileName(fnum));
/* check that the AFM file begins, as it should, with "StartFontMetrics" */
if( StringFGets(buff, MAX_BUFF, fp) == NULL ||
sscanf( (char *) buff, "%s", command) != 1 ||
!StringEqual(command, "StartFontMetrics") )
{ debug1(DFT, DD, "first line of AFM file:%s", buff);
debug1(DFT, DD, "command:%s", command);
Error(37, 9, "font file %s does not begin with StartFontMetrics",
FATAL, &fpos(filename), FileName(fnum));
}
/* initialise font metrics table for the new font */
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, 1, MAX_CHARS * sizeof(struct metrics)));
fnt = (struct metrics *) malloc(MAX_CHARS * sizeof(struct metrics));
if( fnt == (struct metrics *) NULL )
Error(37, 10, "run out of memory while reading font file %s",
FATAL, &fpos(err), FileName(fnum));
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, 0, 2*MAX_CHARS*sizeof(FULL_CHAR)));
lig = (FULL_CHAR *) malloc(2*MAX_CHARS*sizeof(FULL_CHAR));
/* initialise ligature table for the new font */
if( lig == (FULL_CHAR *) NULL )
Error(37, 11, "run out of memory while reading font file %s",
FATAL, &fpos(err), FileName(fnum));
for( i = 0; i < MAX_CHARS; i++ ) lig[i] = 1; /* i.e. char unknown */
ligtop = MAX_CHARS+2; /* must avoid ligtop - MAX_CHARS == 0 or 1 */
/* initialise kerning table for the new font */
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, 0, MAX_CHARS * sizeof(unsigned short)));
kt = (unsigned short *) malloc(MAX_CHARS * sizeof(unsigned short));
if( kt == (unsigned short *) NULL )
Error(37, 12, "run out of memory while reading font file %s",
FATAL, &fpos(err), FileName(fnum));
for( i = 0; i < MAX_CHARS; i++ ) kt[i] = 0; /* i.e. no kerns */
ks = (SHORT_LENGTH *) NULL; /* i.e. no kern sizes */
/* read font metrics file */
xhfound = upfound = utfound = FALSE;
fontname = nilobj; lnum = 1;
while ( ( StringFGets(buff, MAX_BUFF, fp) ) != NULL )
{
lnum++;
sscanf( (char *) buff, "%s", command);
switch( command[0] )
{
case 'U':
if( StringEqual(command, AsciiToFull("UnderlinePosition")) )
{ if( upfound )
{ Error(37, 13, "UnderlinePosition found twice in font file (line %d)",
FATAL, &fpos(filename), lnum);
}
sscanf( (char *) buff, "UnderlinePosition %f", &fl_under_pos);
under_pos = fl_under_pos;
upfound = TRUE;
}
else if( StringEqual(command, AsciiToFull("UnderlineThickness")) )
{ if( utfound )
{ Error(37, 14, "UnderlineThickness found twice in font file (line %d)",
FATAL, &fpos(filename), lnum);
}
sscanf( (char *) buff, "UnderlineThickness %f", &fl_under_thick);
under_thick = fl_under_thick;
utfound = TRUE;
}
break;
case 'X':
if( StringEqual(command, AsciiToFull("XHeight")) )
{ if( xhfound )
{ Error(37, 15, "XHeight found twice in font file (line %d)",
FATAL, &fpos(filename), lnum);
}
sscanf( (char *) buff, "XHeight %f", &fl_xheight2);
xheight2 = fl_xheight2 / 2;
xhfound = TRUE;
}
break;
case 'F':
if( StringEqual(command, AsciiToFull("FontName")) )
{ if( fontname != nilobj )
{ Error(37, 16, "FontName found twice in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
}
sscanf( (char *) buff, "FontName %s", command);
if( StringEqual(command, STR_EMPTY) )
{ Error(37, 17, "FontName empty in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
}
Child(x, LastDown(filename));
if( !StringEqual(command, string(x)) )
Error(37, 18, "FontName in font file (%s) and fontdef (%s) disagree",
WARN, &fpos(filename), command, string(x));
fontname = MakeWord(WORD, command, &fpos(filename));
}
break;
case 'I':
if( StringEqual(command, AsciiToFull("IsFixedPitch")) )
{
sscanf( (char *) buff, "IsFixedPitch %s", command);
if( StringEqual(command, AsciiToFull("true")) )
{ fixed_pitch = TRUE;
}
}
break;
case 'S':
if( StringEqual(command, AsciiToFull("StartCharMetrics")) )
{
if( fontname == nilobj )
Error(37, 19, "FontName missing in file %s",
FATAL, &fpos(filename), FileName(fnum));
if( !xhfound ) xheight2 = DEFAULT_XHEIGHT / 2;
while( StringFGets(buff, MAX_BUFF, fp) != NULL &&
!StringBeginsWith(buff, AsciiToFull("EndCharMetrics")) )
{
/* read one line containing metric info for one character */
debug1(DFT, DDD, "ReadFont reading %s", buff);
lnum++; ch = '\0';
wxfound = bfound = FALSE;
i = 0; while( buff[i] == ' ' ) i++;
while( buff[i] != '\n' )
{
debug2(DFT, DDD, " ch = %d, &buff[i] = %s", ch, &buff[i]);
sscanf( (char *) &buff[i], "%s", command);
if( StringEqual(command, "N") )
{ sscanf( (char *) &buff[i], "N %s", command);
ch = MapCharEncoding(command, font_mapping(filename));
}
else if( StringEqual(command, "WX") )
{ sscanf( (char *) &buff[i], "WX %f", &fl_wx);
wx = fl_wx;
wxfound = TRUE;
}
else if( StringEqual(command, "B") )
{ sscanf( (char *) &buff[i], "B %f %f %f %f",
&fl_llx, &fl_lly, &fl_urx, &fl_ury);
llx = fl_llx;
lly = fl_lly;
urx = fl_urx;
ury = fl_ury;
bfound = TRUE;
}
else if( StringEqual(command, "L") &&
BackEnd != PLAINTEXT && ch != '\0' )
{ if( lig[ch] == 1 ) lig[ch] = ligtop - MAX_CHARS;
lig[ligtop++] = ch;
i++; /* skip L */
while( buff[i] == ' ' ) i++;
while( buff[i] != ';' && buff[i] != '\n' )
{ sscanf( (char *) &buff[i], "%s", command);
ligchar = MapCharEncoding(command, font_mapping(filename));
if( ligchar != '\0' ) lig[ligtop++] = ligchar;
else
{ Error(37, 20, "ignoring unencoded ligature character %s in font file %s (line %d)",
WARN, &fpos(filename), command, FileName(fnum), lnum);
lig[ch] = 1;
}
if( ligtop > 2*MAX_CHARS - 5 )
Error(37, 21, "too many ligature characters in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
while( buff[i] != ' ' && buff[i] != ';' ) i++;
while( buff[i] == ' ' ) i++;
}
lig[ligtop++] = '\0';
}
while( buff[i] != ';' && buff[i] != '\n' ) i++;
if( buff[i] == ';' )
{ i++; while( buff[i] == ' ' ) i++;
}
}
if( ch > '\0' )
{
if( !wxfound )
{ Error(37, 22, "WX missing in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
}
if( !bfound )
{ Error(37, 23, "B missing in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
}
if( lig[ch] == 1 ) lig[ch] = 0; /* set to known if unknown */
else if( lig[ch] > 1 ) /* add '\0' to end of ligs */
lig[ligtop++] = '\0';
switch( BackEnd )
{
case POSTSCRIPT:
case PDF: fnt[ch].left = llx;
fnt[ch].down = lly - xheight2;
fnt[ch].right = wx;
fnt[ch].up = ury - xheight2;
fnt[ch].last_adjust =
(urx == 0 || wx == 0 || fixed_pitch) ? 0 : urx - wx;
break;
case PLAINTEXT: fnt[ch].left = 0;
fnt[ch].down = - PlainCharHeight / 2;
fnt[ch].right = PlainCharWidth;
fnt[ch].up = PlainCharHeight / 2;
fnt[ch].last_adjust = 0;
break;
}
debug6(DFT, DDD, " fnt[%c] = (%d,%d,%d,%d,%d)",ch, fnt[ch].left,
fnt[ch].down, fnt[ch].right, fnt[ch].up, fnt[ch].last_adjust);
}
}
}
else if( BackEnd != PLAINTEXT && Kern &&
StringEqual(command, AsciiToFull("StartKernPairs")) )
{ FULL_CHAR ch1, ch2, last_ch1;
FULL_CHAR name1[30], name2[30];
int kc_top, ks_top, pos, num_pairs, ksize; float fl_ksize;
if( sscanf( (char *) buff, "StartKernPairs %d", &num_pairs) != 1 )
Error(37, 24, "syntax error on StartKernPairs line in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
kc_top = 1; ks_top = 1;
ifdebug(DMA, D,
DebugRegisterUsage(MEM_FONTS, 0, 2*num_pairs * sizeof(FULL_CHAR)));
kc = (FULL_CHAR *) malloc(2 * num_pairs * sizeof(FULL_CHAR));
ifdebug(DMA, D, DebugRegisterUsage(MEM_FONTS, 0,
2 * num_pairs * sizeof(unsigned char)));
kv = (unsigned char *) malloc(2 * num_pairs * sizeof(unsigned char));
ifdebug(DMA, D, DebugRegisterUsage(MEM_FONTS, 0,
num_pairs * sizeof(SHORT_LENGTH)));
ks = (SHORT_LENGTH *) malloc(num_pairs * sizeof(SHORT_LENGTH));
last_ch1 = '\0';
while( StringFGets(buff, MAX_BUFF, fp) == (char *) buff &&
!StringBeginsWith(buff, AsciiToFull("EndKernPairs")) )
{
debug1(DFT, DD, "ReadFont reading %s", buff);
lnum++;
if( StringBeginsWith(buff, AsciiToFull("KPX")) )
{
/* get the two character names and kern size from buff */
if( sscanf((char *)buff, "KPX %s %s %f",name1,name2,&fl_ksize)!=3 )
Error(37, 25, "syntax error in font file %s (line %d): %s",
FATAL, &fpos(filename), FileName(fnum), lnum, buff);
/* ignore size 0 kern pairs (they are frequent, why?) */
ksize = fl_ksize;
if( ksize == 0 ) continue;
/* check that both characters are encoded */
ch1 = MapCharEncoding(name1, font_mapping(filename));
if( ch1 == '\0' )
{
/* ***
Error(37, 26, "unencoded kern character %s in font file %s (line %d)",
WARN, &fpos(filename), name1, FileName(fnum), lnum);
*** */
continue;
}
ch2 = MapCharEncoding(name2, font_mapping(filename));
if( ch2 == '\0' )
{
/* ***
Error(37, 27, "unencoded kern character %s in font file %s (line %d)",
WARN, &fpos(filename), name2, FileName(fnum), lnum);
*** */
continue;
}
/* check that ch1 is contiguous with previous occurrences */
if( ch1 != last_ch1 && kt[ch1] != 0 )
{ Error(37, 28, "non-contiguous kerning pair %s %s in font file %s (line %d)",
WARN, &fpos(filename), name1, name2, FileName(fnum), lnum);
continue;
}
last_ch1 = ch1;
/* if ch1 never seen before, make new entry in kt[] and kc[] */
if( kt[ch1] == 0 )
{ debug2(DFT, DD, " kt[%d] = %d", ch1, kc_top);
kt[ch1] = kc_top;
kc[kc_top] = (FULL_CHAR) '\0';
kv[kc_top] = 0;
kc_top++;
}
/* find kerning size in ks[] or else add it to the end */
for( pos = 1; pos < ks_top; pos++ )
{ if( ks[pos] == ksize ) break;
}
if( pos == ks_top )
{ if( ks_top == num_pairs )
Error(37, 29, "too many kerning pairs in font file %s (line %d)",
FATAL, &fpos(filename), FileName(fnum), lnum);
debug2(DFT, DD, " ks[%d] = %d", pos, ksize);
ks[pos] = ksize;
ks_top++;
}
/* insert ch2 into the kc entries (sorted decreasing) for ch1 */
for( i = kc_top-1; i >= kt[ch1] && kc[i] < ch2; i-- )
{ kc[i+1] = kc[i];
kv[i+1] = kv[i];
}
if( i >= kt[ch1] && kc[i] == ch2 )
Error(37, 30, "kerning pair %s %s appears twice in font file %s (line %d)",
FATAL, &fpos(filename), name1, name2, FileName(fnum), lnum);
kc[i+1] = ch2;
kv[i+1] = pos;
kc_top++;
}
}
ks[0] = ks_top;
}
break;
case 'E':
if( StringEqual(command, AsciiToFull("EndFontMetrics")) )
{
/* make a new font record and insert into font tree */
font_num(face) = font_num(fontname) = font_count;
font_size(fontname) =
(BackEnd != PLAINTEXT) ? SZ_DFT : PlainCharHeight;
font_xheight2(fontname) =
(BackEnd != PLAINTEXT) ? xheight2 : PlainCharHeight / 4;
font_mapping(fontname) = font_mapping(filename);
ch = MapCharEncoding(STR_PS_SPACENAME, font_mapping(fontname));
font_spacewidth(fontname) = ch == '\0' ? 0 : fnt[ch].right;
finfo[font_count].font_table = fontname;
finfo[font_count].original_font = face;
finfo[font_count].underline_pos = xheight2 - under_pos;
finfo[font_count].underline_thick = under_thick;
finfo[font_count].size_table = fnt;
finfo[font_count].lig_table = lig;
finfo[font_count].kern_table = kt;
finfo[font_count].kern_chars = kc;
finfo[font_count].kern_value = kv;
finfo[font_count].kern_sizes = ks;
Link(face, fontname);
ifdebug(DFT, DD, DebugKernTable(font_count));
/* *** either no errors or too many, so killing this now
if( InitializeAll )
{ OBJECT family; FULL_CHAR *str;
Parent(family, Up(face));
for( i = 0; i < MAX_CHARS; i++ )
{
if( lig[i] == 1 )
{ str = string(MapTable[font_mapping(fontname)]->vector[i]);
if( !StringEqual(str, AsciiToFull(".notdef")) &&
MapCharEncoding(str, font_mapping(fontname)) == i )
Error(37, 31, "font %s %s has no glyph for character %s",
WARN, &fpos(filename), string(family), string(face), str);
}
}
}
*** */
/* close file, debug and exit */
fclose(fp);
debug4(DFT, D, "ReadFont returning: %d, name %s, fs %d, xh2 %d",
font_count, string(fontname), font_size(fontname), xheight2);
return;
}
break;
default:
break;
}
}
Error(37, 32, "EndFontMetrics missing from font file %s",
FATAL, &fpos(filename), FileName(fnum));
} /* end ReadFont */
/*@::FontChange()@************************************************************/
/* */
/* FontChange(style, x) */
/* */
/* Returns an internal font number which is the current font changed */
/* according to word object x. e.g. if current font is Roman 12p and x is */
/* "-3p", then FontChange returns the internal font number of Roman 9p. */
/* */
/* FontChange permits empty and null objects within x; these have no */
/* effect. */
/* */
/*****************************************************************************/
void FontChange(STYLE *style, OBJECT x)
{ /* register */ int i;
OBJECT par[3], family, face, fsize, y, link, new, old, tmpf;
GAP gp; SHORT_LENGTH flen; int num, c; unsigned inc;
struct metrics *newfnt, *oldfnt; FULL_CHAR *lig;
SHORT_LENGTH *oldks, *newks; int klen;
debug2(DFT, D, "FontChange( %s, %s )", EchoStyle(style), EchoObject(x));
assert( font(*style) <= font_count, "FontChange: font_count!");
ifdebug(DFT, DD, FontDebug());
/* set par[0..num-1] to the 1, 2 or 3 parameters of the font operator */
num = 0;
if( type(x) == NULL_CLOS )
{ /* acceptable, but do nothing */
}
else if( is_word(type(x)) )
{
if( StringEqual(string(x), STR_SMALL_CAPS_ON) )
small_caps(*style) = SMALL_CAPS_ON;
else if( StringEqual(string(x), STR_SMALL_CAPS_OFF) )
small_caps(*style) = SMALL_CAPS_OFF;
else if( !StringEqual(string(x), STR_EMPTY) )
par[num++] = x;
}
else if( type(x) == ACAT )
{ for( link = Down(x); link != x; link = NextDown(link) )
{ Child(y, link);
debug1(DFT, DDD, " pars examining y = %s", EchoObject(y));
if( type(y) == GAP_OBJ || type(y) == NULL_CLOS ) continue;
if( is_word(type(y)) )
{
if( StringEqual(string(y), STR_SMALL_CAPS_ON) )
small_caps(*style) = SMALL_CAPS_ON;
else if( StringEqual(string(y), STR_SMALL_CAPS_OFF) )
small_caps(*style) = SMALL_CAPS_OFF;
else if( !StringEqual(string(y), STR_EMPTY) )
{
if( num >= 3 )
{ Error(37, 33, "error in left parameter of %s",
WARN, &fpos(x), KW_FONT);
debug0(DFT, D, "FontChange returning: ACAT children");
return;
}
par[num++] = y;
}
}
else
{ Error(37, 34, "error in left parameter of %s",
WARN, &fpos(x), KW_FONT);
debug0(DFT, D, "FontChange returning: ACAT children");
return;
}
}
}
else
{ Error(37, 35, "error in left parameter of %s", WARN, &fpos(x), KW_FONT);
debug0(DFT, D, "FontChange returning: wrong type");
return;
}
debug1(DFT, DDD, " found pars, num = %d", num);
if( num == 0 )
{ debug1(DFT, D, "FontChange returning %s", EchoStyle(style));
return;
}
/* extract fsize parameter, if any */
assert( num >= 1 && num <= 3, "FontChange: num!" );
fsize = nilobj;
for( i = 0; i < num; i++ )
{
c = string(par[i])[0];
if( c == CH_INCGAP || c == CH_DECGAP || decimaldigit(c) )
{
/* extract fsize, shuffle the rest down */
fsize = par[i];
for( i = i + 1; i < num; i++ )
par[i-1] = par[i];
num--;
}
}
/* *** old now
c = string(par[num-1])[0];
if( c == CH_INCGAP || c == CH_DECGAP || decimaldigit(c) )
{ fsize = par[num-1]; num--;
}
else fsize = nilobj;
*** */
/* check for initial font case: must have family, face, and size */
if( font(*style) == NO_FONT && (fsize == nilobj || num < 2) )
Error(37, 36, "initial font must have family, face and size",
FATAL, &fpos(x));
/* get font family */
if( num == 2 )
{
/* par[0] contains a new family name */
for( link = Down(font_root); link != font_root; link = NextDown(link) )
{ Child(family, link);
if( StringEqual(string(family), string(par[0])) ) break;
}
if( link == font_root )
{ Error(37, 37, "font family %s not defined",
WARN, &fpos(par[0]), string(par[0]));
return;
}
}
else
{ /* preserve current family */
assert( Up(finfo[font(*style)].font_table)!=finfo[font(*style)].font_table,
"FontChange: Up(finfo[font(*style)].font_table) !" );
Parent(face, Up(finfo[font(*style)].font_table));
assert( is_word(type(face)), "FontChange: type(face)!" );
assert( Up(face) != face, "FontChange: Up(face)!" );
Parent(family, Up(face));
assert( is_word(type(family)), "FontChange: type(family)!" );
}
/* get font face */
if( num != 0 )
{
/* par[num-1] contains a new face name */
for( link = Down(family); link != family; link = NextDown(link) )
{ Child(face, link);
if( StringEqual(string(face), string(par[num-1])) ) break;
}
if( link == family )
{
/* missing face name; first check whether a family name was intended */
for( link = Down(font_root); link != font_root; link = NextDown(link) )
{ Child(tmpf, link);
if( StringEqual(string(tmpf), string(par[num-1])) ) break;
}
if( font_root == Down(font_root) )
{ Error(37, 38, "there are no fonts", FATAL, &fpos(par[num-1]));
}
else if( link != font_root )
{ Error(37, 39, "font family name %s must be accompanied by a face name",
WARN, &fpos(par[num-1]), string(par[num-1]));
}
else Error(37, 40, "font face name %s not defined in font family %s",
WARN, &fpos(par[num-1]), string(par[num-1]), string(family));
return;
}
}
else
{
/* preserve current face name */
Parent(face, Up(finfo[font(*style)].font_table));
assert( is_word(type(face)), "FontChange: type(face)!" );
assert( Up(face) != face, "FontChange: Up(face)!" );
}
/* get font size */
if( fsize == nilobj ) flen = font_size(finfo[font(*style)].font_table);
else
{ GetGap(fsize, style, &gp, &inc);
if( mode(gp) != EDGE_MODE || units(gp) != FIXED_UNIT )
{ Error(37, 56, "syntax error in font size %s; ignoring it",
WARN, &fpos(fsize), string(fsize));
flen = font_size(finfo[font(*style)].font_table);
}
else if( inc == GAP_ABS )
flen = width(gp);
else if( font(*style) == NO_FONT )
{ Error(37, 41, "no current font on which to base size change %s",
FATAL, &fpos(fsize), string(fsize));
}
else if( inc == GAP_INC )
flen = font_size(finfo[font(*style)].font_table) + width(gp);
else if( inc == GAP_DEC )
flen = font_size(finfo[font(*style)].font_table) - width(gp);
else Error(37, 42, "FontChange: %d", INTERN, &fpos(x), inc);
}
if( flen <= 0 )
{ Error(37, 43, "%s %s ignored (result is not positive)",
WARN, &fpos(fsize), string(fsize), KW_FONT);
return;
}
/* if the font file has not been read before, read it now */
assert( Down(face) != face && type(Down(face)) == LINK, "FontChange: dn!" );
if( Down(face) == LastDown(face) ) ReadFont(face, x);
assert( Down(face) != LastDown(face), "FontChange: after ReadFont!" );
/* search fonts of face for desired size; return if already present */
if( BackEnd == PLAINTEXT ) flen = PlainCharHeight;
for( link = NextDown(Down(face)); link != face; link = NextDown(link) )
{ Child(fsize, link);
if( font_size(fsize) == flen )
{ font(*style) = font_num(fsize);
SetGap(space_gap(*style), nobreak(space_gap(*style)), FALSE, TRUE,
FIXED_UNIT, EDGE_MODE, font_spacewidth(fsize));
debug2(DFT, D,"FontChange returning (old) %d (XHeight2 = %d)",
font(*style), font_xheight2(finfo[font(*style)].font_table));
return;
}
}
/* now need to rescale the font; first create a sized font record */
if( ++font_count >= finfo_size )
{ if( font_count > MAX_FONT )
Error(37, 44, "too many different fonts and sizes (max is %d)",
FATAL, &fpos(x), MAX_FONT);
ifdebug(DMA, D, DebugRegisterUsage(MEM_FONTS, -1,
-finfo_size * sizeof(FONT_INFO)));
finfo_size *= 2;
ifdebug(DMA, D, DebugRegisterUsage(MEM_FONTS, 1,
finfo_size * sizeof(FONT_INFO)));
finfo = (FONT_INFO *) realloc(finfo, finfo_size * sizeof(FONT_INFO));
if( finfo == (FONT_INFO *) NULL )
Error(37, 45, "run out of memory when increasing font table size",
FATAL, &fpos(x));
}
assert( Down(face) != face && NextDown(Down(face)) != face, "FontChange!!" );
Child(old, NextDown(Down(face)));
assert( is_word(type(old)), "FontChange: old!" );
new = MakeWord(WORD, string(old), no_fpos);
Link(face, new);
font_size(new) = BackEnd != PLAINTEXT ? flen : font_size(old);
font_xheight2(new) = font_xheight2(old) * font_size(new) / font_size(old);
font_mapping(new) = font_mapping(old);
font_spacewidth(new) = font_spacewidth(old) * font_size(new)/font_size(old);
font_num(new) = font_count;
finfo[font_count].font_table = new;
finfo[font_count].original_font = face;
finfo[font_count].underline_pos =
(finfo[font_num(old)].underline_pos * font_size(new)) / font_size(old);
finfo[font_count].underline_thick =
(finfo[font_num(old)].underline_thick * font_size(new)) / font_size(old);
ifdebug(DMA, D, DebugRegisterUsage(MEM_FONTS, 1,
MAX_CHARS * sizeof(struct metrics)));
finfo[font_count].size_table =
(struct metrics *) malloc(MAX_CHARS * sizeof(struct metrics));
if( finfo[font_count].size_table == (struct metrics *) NULL )
Error(37, 46, "run out of memory when changing font or font size",
FATAL, &fpos(x));
finfo[font_count].lig_table = lig = finfo[font_num(old)].lig_table;
/* scale old font to new size */
newfnt = finfo[font_num(new)].size_table;
oldfnt = finfo[font_num(old)].size_table;
for( i = 0; i < MAX_CHARS; i++ ) if( lig[i] != 1 )
{ newfnt[i].left = (oldfnt[i].left * font_size(new)) / font_size(old);
newfnt[i].right = (oldfnt[i].right * font_size(new)) / font_size(old);
newfnt[i].down = (oldfnt[i].down * font_size(new)) / font_size(old);
newfnt[i].up = (oldfnt[i].up * font_size(new)) / font_size(old);
newfnt[i].last_adjust = (oldfnt[i].last_adjust * font_size(new)) / font_size(old);
}
/* copy and scale kerning tables */
finfo[font_count].kern_table = finfo[font_num(old)].kern_table;
finfo[font_count].kern_chars = finfo[font_num(old)].kern_chars;
finfo[font_count].kern_value = finfo[font_num(old)].kern_value;
oldks = finfo[font_num(old)].kern_sizes;
if( oldks != (SHORT_LENGTH *) NULL )
{ klen = oldks[0];
ifdebug(DMA, D, DebugRegisterUsage(MEM_FONTS, 0, klen * sizeof(SHORT_LENGTH)));
finfo[font_count].kern_sizes = newks =
(SHORT_LENGTH *) malloc(klen * sizeof(SHORT_LENGTH));
if( newks == (SHORT_LENGTH *) NULL )
Error(37, 47, "run out of memory when changing font or font size",
FATAL, &fpos(x));
newks[0] = klen;
for( i = 1; i < klen; i++ )
newks[i] = (oldks[i] * font_size(new)) / font_size(old);
}
else finfo[font_count].kern_sizes = (SHORT_LENGTH *) NULL;
/* return new font number and exit */
font(*style) = font_count;
SetGap(space_gap(*style), nobreak(space_gap(*style)), FALSE, TRUE,
FIXED_UNIT, EDGE_MODE, font_spacewidth(new));
debug2(DFT, D,"FontChange returning (scaled) %d (XHeight2 = %d)",
font(*style), font_xheight2(finfo[font(*style)].font_table));
/* FontDebug(); */
} /* end FontChange */
/*****************************************************************************/
/* */
/* KernLength(fnum, ch1, ch2, res) */
/* */
/* Set res to the kern length between ch1 and ch2 in font fnum, or 0 if */
/* none. Actually we first convert ch1 and ch2 to corresponding unaccented */
/* characters, because metrics files don't seem to contain kerning pairs */
/* for accented characters. */
/* */
/*****************************************************************************/
#define KernLength(fnum, mp, ch1, ch2, res) \
{ int ua_ch1 = mp[ch1]; \
int ua_ch2 = mp[ch2]; \
int i = finfo[fnum].kern_table[ua_ch1], j; \
if( i == 0 ) res = 0; \
else \
{ FULL_CHAR *kc = finfo[fnum].kern_chars; \
for( j = i; kc[j] > ua_ch2; j++ ); \
res = (kc[j] == ua_ch2) ? \
finfo[fnum].kern_sizes[finfo[fnum].kern_value[j]] : 0; \
} \
} /* end KernLength */
/*@::FontWordSize()@**********************************************************/
/* */
/* FontWordSize(x) */
/* */
/* Calculate the horizontal and vertical size of WORD or QWORD x, including */
/* the effect of ligature sequences but not replacing them with ligatures. */
/* */
/*****************************************************************************/
void FontWordSize(OBJECT x)
{ FULL_CHAR *p, *q, *a, *b, *lig, *unacc, *acc; OBJECT tmp;
FULL_CHAR buff[MAX_BUFF]; MAPPING m;
int r, u, d, ksize; struct metrics *fnt;
debug2(DFT, D, "FontWordSize( %s ), font = %d", string(x), word_font(x));
assert( is_word(type(x)), "FontWordSize: !is_word(type(x))!" );
p = string(x);
q = buff;
if( *p )
{ if ( word_font(x) < 1 || word_font(x) > font_count )
Error(37, 48, "no current font at word %s", FATAL, &fpos(x), string(x));
if ( word_colour(x) == 0 && BackEnd != PLAINTEXT )
Error(37, 49, "no current colour at word %s", FATAL, &fpos(x), string(x));
if ( word_language(x) == 0 )
Error(37, 50, "no current language at word %s", FATAL, &fpos(x),string(x));
fnt = finfo[word_font(x)].size_table;
lig = finfo[word_font(x)].lig_table;
m = font_mapping(finfo[word_font(x)].font_table);
unacc = MapTable[m]->map[MAP_UNACCENTED];
acc = MapTable[m]->map[MAP_ACCENT];
d = u = r = 0;
do
{
/* check for missing glyph (lig[] == 1) or ligatures (lig[] > 1) */
debug2(DFT, D, " examining `%c' lig = %d", *p, lig[*p]);
if( lig[*q = *p++] )
{
if( lig[*q] == 1 )
{ tmp = MakeWord(QWORD, STR_SPACE, &fpos(x));
string(tmp)[0] = *q;
/* bug fix: unaccented version exists if unacc differs from self */
if( unacc[*q] != *q )
{
/* *** this is acceptable now, let this char through
Error(37, 51, "accent dropped from character %s (it has no glyph in font %s)",
WARN, &fpos(x),
StringQuotedWord(tmp), FontFamilyAndFace(word_font(x)));
*(p-1) = *q = unacc[*q];
*** */
debug2(DFT, D, " unacc[%c] = `%c'", *q, unacc[*q]);
fnt[*q].up = fnt[unacc[*q]].up;
fnt[*q].down = fnt[unacc[*q]].down;
fnt[*q].left = fnt[unacc[*q]].left;
fnt[*q].right = fnt[unacc[*q]].right;
fnt[*q].last_adjust = fnt[unacc[*q]].last_adjust;
lig[*q] = 0;
}
else
{
debug1(DFT, D, " unacc[%c] = 0, replacing by space", *q);
Error(37, 52, "character %s replaced by space (it has no glyph in font %s)",
WARN, &fpos(x),
StringQuotedWord(tmp), FontFamilyAndFace(word_font(x)));
*(p-1) = *q = CH_SPACE;
}
Dispose(tmp);
}
else
{
debug1(DFT, D, " processing ligature beginning at %c", *q);
a = &lig[ lig[*(p-1)] + MAX_CHARS ];
while( *a++ == *(p-1) )
{ b = p;
while( *a == *b && *(a+1) != '\0' && *b != '\0' ) a++, b++;
if( *(a+1) == '\0' )
{ *q = *a;
p = b;
break;
}
else
{ while( *++a );
a++;
}
}
}
}
/* accumulate size of *q */
if( fnt[*q].up > u ) u = fnt[*q].up;
if( fnt[*q].down < d ) d = fnt[*q].down;
r += fnt[*q++].right;
} while( *p );
*q = '\0';
/* adjust for last character */
r += fnt[*(q-1)].last_adjust;
/* add kern lengths to r */
for( p = buff, q = p+1; *q; p++, q++ )
{ KernLength(word_font(x), unacc, *p, *q, ksize);
debugcond3(DFT, D, ksize != 0, " KernLength(fnum, %c, %c) = %d",
*p, *q, ksize);
r += ksize;
}
/* set sizes of x */
back(x, COLM) = 0;
fwd(x, COLM) = r;
back(x, ROWM) = u;
fwd(x, ROWM) = -d;
}
else back(x, COLM) = fwd(x, COLM) = back(x, ROWM) = fwd(x, ROWM) = 0;
debug4(DFT, D, "FontWordSize returning %hd %hd %hd %hd",
back(x, COLM), fwd(x, COLM), back(x, ROWM), fwd(x, ROWM));
} /* end FontWordSize */
/*@::FontSize(), FontHalfXHeight(), FontEncoding(), FontName()@***************/
/* */
/* FULL_LENGTH FontSize(fnum, x) */
/* */
/* Return the size of this font. x is for error messages only. */
/* */
/*****************************************************************************/
FULL_LENGTH FontSize(FONT_NUM fnum, OBJECT x)
{ debug1(DFT, DD, "FontSize( %d )", fnum);
assert( fnum <= font_count, "FontSize!" );
if( fnum <= 0 )
Error(37, 53, "no current font at this point", FATAL, &fpos(x));
debug1(DFT, DD, "FontSize returning %d", font_size(finfo[fnum].font_table));
return font_size(finfo[fnum].font_table);
} /* end FontSize */
/*****************************************************************************/
/* */
/* FULL_LENGTH FontHalfXHeight(fnum) */
/* */
/* Return the xheight2 value of this font. */
/* */
/*****************************************************************************/
FULL_LENGTH FontHalfXHeight(FONT_NUM fnum)
{ debug1(DFT, DD, "FontHalfXHeight( %d )", fnum);
assert( fnum <= font_count, "FontHalfXHeight!" );
debug1(DFT, DD, "FontHalfXHeight returning %d",
font_xheight2(finfo[fnum].font_table));
return font_xheight2(finfo[fnum].font_table);
} /* end FontHalfXHeight */
/*****************************************************************************/
/* */
/* MAPPING FontMapping(fnum, xfpos) */
/* */
/* Return the character mapping of this font, to use for small caps, etc. */
/* xfpos is the file position for error messages. */
/* */
/*****************************************************************************/
MAPPING FontMapping(FONT_NUM fnum, FILE_POS *xfpos)
{ debug1(DFT, DD, "FontMapping( %d )", fnum);
assert( fnum <= font_count, "FontMapping!" );
if( fnum <= 0 )
Error(37, 54, "no current font at this point", FATAL, xfpos);
debug1(DFT, DD, "FontMapping returning %d",
font_mapping(finfo[fnum].font_table));
return font_mapping(finfo[fnum].font_table);
} /* end FontMapping */
/*****************************************************************************/
/* */
/* FULL_CHAR *FontName(fnum) */
/* */
/* Return the short PostScript name of this font. */
/* */
/*****************************************************************************/
FULL_CHAR *FontName(FONT_NUM fnum)
{ OBJECT face, AFMfilename, short_name;
debug1(DFT, D, "FontName( %d )", fnum);
assert( fnum <= font_count, "FontName!" );
Parent(face, Up(finfo[fnum].font_table));
Child(AFMfilename, Down(face));
Child(short_name, Down(AFMfilename));
assert( is_word(type(short_name)), "FontName: short_name!" );
debug1(DFT, D, "FontName returning %s", string(short_name));
return string(short_name);
} /* end FontName */
/*@::FontFamily(), FontFace@**************************************************/
/* */
/* FULL_CHAR *FontFamilyAndFace(fnum) */
/* */
/* Return a static string of the current font family and face. */
/* */
/*****************************************************************************/
FULL_CHAR *FontFamily(FONT_NUM fnum)
{ OBJECT face, family;
debug1(DFT, D, "FontFamily( %d )", fnum);
assert( fnum <= font_count, "FontFamiliy!" );
Parent(face, Up(finfo[fnum].font_table));
Parent(family, Up(face));
debug1(DFT, D, "FontFamily returning %s", string(family));
return string(family);
} /* end FontFamilyAndFace */
FULL_CHAR *FontFace(FONT_NUM fnum)
{ OBJECT face, family;
debug1(DFT, D, "FontFacec( %d )", fnum);
assert( fnum <= font_count, "FontFamiliy!" );
Parent(face, Up(finfo[fnum].font_table));
Parent(family, Up(face));
debug1(DFT, D, "FontFace returning %s", string(face));
return string(face);
} /* end FontFamilyAndFace */
/*@::FontFamilyAndFace(), FontPrintAll()@*************************************/
/* */
/* FULL_CHAR *FontFamilyAndFace(fnum) */
/* */
/* Return a static string of the current font family and face. */
/* */
/*****************************************************************************/
FULL_CHAR *FontFamilyAndFace(FONT_NUM fnum)
{ OBJECT face, family; static FULL_CHAR buff[80];
debug1(DFT, D, "FontFamilyAndFace( %d )", fnum);
assert( fnum <= font_count, "FontName!" );
Parent(face, Up(finfo[fnum].font_table));
Parent(family, Up(face));
if( StringLength(string(family)) + StringLength(string(face)) + 1 > 80 )
Error(37, 55, "family and face names %s %s are too long",
FATAL, no_fpos, string(family), string(face));
StringCopy(buff, string(family));
StringCat(buff, STR_SPACE);
StringCat(buff, string(face));
debug1(DFT, D, "FontName returning %s", buff);
return buff;
} /* end FontFamilyAndFace */
/*****************************************************************************/
/* */
/* FontPrintAll(fp) */
/* */
/* Print all font encoding commands on output file fp */
/* */
/*****************************************************************************/
void FontPrintAll(FILE *fp)
{ OBJECT family, face, AFMfilename, short_name, ps_name, link, flink;
assert(font_root!=nilobj && type(font_root)==ACAT, "FontDebug: font_root!");
debug0(DFT, DD, "FontPrintAll(fp)");
for( link = Down(font_root); link != font_root; link = NextDown(link) )
{ Child(family, link);
assert( is_word(type(family)), "FontPrintAll: family!" );
for( flink = Down(family); flink != family; flink = NextDown(flink) )
{ Child(face, flink);
assert( is_word(type(face)), "FontPrintAll: face!" );
assert( Down(face) != face, "FontDebug: Down(face)!");
Child(AFMfilename, Down(face));
assert( is_word(type(AFMfilename)), "FontPrintAll: filename!" );
assert( Down(AFMfilename) != AFMfilename, "FontPrintAll: 1!" );
assert( LastDown(AFMfilename) != Down(AFMfilename), "FontPrintAll: 2!" );
Child(short_name, Down(AFMfilename));
assert( is_word(type(short_name)), "FontPrintAll: short_name!" );
Child(ps_name, LastDown(AFMfilename));
assert( is_word(type(ps_name)), "FontPrintAll: ps_name!" );
if( font_recoded(face) )
{ fprintf(fp, "/%s%s %s /%s LoutRecode\n",
string(ps_name), string(short_name),
MapEncodingName(font_mapping(AFMfilename)), string(ps_name));
fprintf(fp, "/%s { /%s%s LoutFont } def\n", string(short_name),
string(ps_name), string(short_name));
}
else fprintf(fp, "/%s { /%s LoutFont } def\n", string(short_name),
string(ps_name));
}
}
fputs("\n", fp);
debug0(DFT, DD, "FontPrintAll returning.");
} /* end FontPrintAll */
/*@@**************************************************************************/
/* */
/* FontPrintPageSetup(fp) */
/* */
/* Print all font encoding commands needed for the current page onto fp. */
/* */
/*****************************************************************************/
void FontPrintPageSetup(FILE *fp)
{ OBJECT face, AFMfilename, short_name, ps_name, link;
assert(font_root!=nilobj && type(font_root)==ACAT, "FontDebug: font_root!");
assert(font_used!=nilobj && type(font_used)==ACAT, "FontDebug: font_used!");
debug0(DFT, DD, "FontPrintPageSetup(fp)");
for( link = Down(font_used); link != font_used; link = NextDown(link) )
{
Child(face, link);
assert( is_word(type(face)), "FontPrintPageSetup: face!" );
assert( Down(face) != face, "FontDebug: Down(face)!");
/* record that face is used on the first page, if this is the first page */
if( font_curr_page == 1 ) font_firstpage(face) = TRUE;
/* print font encoding command unless already done */
if( !font_firstpage(face) || font_curr_page == 1 )
{ Child(AFMfilename, Down(face));
assert( is_word(type(AFMfilename)), "FontPrintPageSetup: filename!" );
assert( Down(AFMfilename) != AFMfilename, "FontPrintPageSetup: 1!" );
assert( LastDown(AFMfilename)!=Down(AFMfilename), "FontPrintPageSetup!");
Child(short_name, Down(AFMfilename));
assert( is_word(type(short_name)), "FontPrintPageSetup: short_name!" );
Child(ps_name, LastDown(AFMfilename));
assert( is_word(type(ps_name)), "FontPrintPageSetup: ps_name!" );
fprintf(fp, "%%%%IncludeResource: font %s\n", string(ps_name));
switch( BackEnd )
{
case POSTSCRIPT:
if( font_recoded(face) )
{ fprintf(fp, "/%s%s %s /%s LoutRecode\n",
string(ps_name), string(short_name),
MapEncodingName(font_mapping(AFMfilename)), string(ps_name));
fprintf(fp, "/%s { /%s%s LoutFont } def\n", string(short_name),
string(ps_name), string(short_name));
}
else fprintf(fp, "/%s { /%s LoutFont } def\n", string(short_name),
string(ps_name));
break;
case PDF:
PDFFont_AddFont(fp, string(short_name), string(ps_name),
MapEncodingName(font_mapping(AFMfilename)));
break;
}
}
}
debug0(DFT, DD, "FontPrintPageSetup returning.");
} /* end FontPrintPageSetup */
/*@@**************************************************************************/
/* */
/* FontPrintPageResources(fp) */
/* */
/* Print all page resources (i.e. fonts needed or supplied) onto fp. */
/* */
/*****************************************************************************/
void FontPrintPageResources(FILE *fp)
{ OBJECT face, AFMfilename, short_name, ps_name, link;
BOOLEAN first;
assert(font_root!=nilobj && type(font_root)==ACAT, "FontDebug: font_root!");
assert(font_used!=nilobj && type(font_used)==ACAT, "FontDebug: font_used!");
debug0(DFT, DD, "FontPrintPageResources(fp)");
first = TRUE;
for( link = Down(font_used); link != font_used; link = NextDown(link) )
{
Child(face, link);
assert( is_word(type(face)), "FontPrintPageResources: face!" );
assert( Down(face) != face, "FontDebug: Down(face)!");
Child(AFMfilename, Down(face));
assert( is_word(type(AFMfilename)), "FontPrintPageResources: filename!" );
assert( Down(AFMfilename) != AFMfilename, "FontPrintPageResources: 1!" );
assert( LastDown(AFMfilename)!=Down(AFMfilename), "FontPrintPageRes!");
Child(short_name, Down(AFMfilename));
assert( is_word(type(short_name)), "FontPrintPageResources: short_name!" );
Child(ps_name, LastDown(AFMfilename));
assert( is_word(type(ps_name)), "FontPrintPageResources: ps_name!" );
switch( BackEnd )
{
case POSTSCRIPT:
fprintf(fp, "%s font %s\n",
first ? "%%PageResources:" : "%%+", string(ps_name));
first = FALSE;
break;
case PDF:
/* PDFWriteFontResource(fp, string(ps_name)); */
break;
}
}
debug0(DFT, DD, "FontPrintPageResources returning.");
} /* end FontPrintPageResources */
/*@@**************************************************************************/
/* */
/* FontAdvanceCurrentPage() */
/* */
/* Advance the current page. */
/* */
/*****************************************************************************/
void FontAdvanceCurrentPage(void)
{ debug0(DFT, DD, "FontAdvanceCurrentPage()");
while( Down(font_used) != font_used ) DeleteLink(Down(font_used));
font_curr_page++;
debug0(DFT, DD, "FontAdvanceCurrentPage() returning.");
} /* end FontAdvanceCurrentPage */
/*@::FontPageUsed()@**********************************************************/
/* */
/* OBJECT FontPageUsed(face) */
/* */
/* Declares that font face is used on the current page. */
/* */
/*****************************************************************************/
void FontPageUsed(OBJECT face)
{ debug1(DFT, DD, "FontPageUsed(%d)", font_num(face));
assert( font_page(face) < font_curr_page, "FontPageUsed!" );
Link(font_used, face);
font_page(face) = font_curr_page;
debug0(DFT, DD, "FontPageUsed returning");
} /* end FontPageUsed */
/*@::FontNeeded()@************************************************************/
/* */
/* OBJECT FontNeeded(fp) */
/* */
/* Writes font needed resources onto file out_fp. Returns TRUE if none. */
/* */
/*****************************************************************************/
BOOLEAN FontNeeded(FILE *fp)
{ BOOLEAN first_need = TRUE;
OBJECT link, flink, family, face, x;
for( link = Down(font_root); link != font_root; link = NextDown(link) )
{ Child(family, link);
for( flink = Down(family); flink != family; flink = NextDown(flink) )
{ Child(face, flink);
if( LastDown(face) != Down(face) )
{ Child(x, LastDown(face));
fprintf(fp, "%s font %s\n",
first_need ? "%%DocumentNeededResources:" : "%%+", string(x));
first_need = FALSE;
}
}
}
return first_need;
} /* end FontNeeded */
