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+/*@z37.c:Font Service:Declarations@*******************************************/
+/* */
+/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.17) */
+/* COPYRIGHT (C) 1991, 1999 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 */
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