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z49.c
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/*@z49.c:PostScript Back End:PS_BackEnd@**************************************/
/* */
/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.43) */
/* COPYRIGHT (C) 1991, 2008 Jeffrey H. Kingston */
/* */
/* Jeffrey H. Kingston (jeff@it.usyd.edu.au) */
/* School of Information Technologies */
/* 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 3, 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: z49.c */
/* MODULE: PostScript Back End */
/* EXTERNS: PS_BackEnd */
/* */
/*****************************************************************************/
#include "externs.h"
#define pnl fputs((char *) STR_NEWLINE, out_fp)
#define p0(str) { fputs(str, out_fp); pnl; }
#define p1(fmt, a1) { fprintf(out_fp, fmt, a1); pnl; }
#define p2(fmt, a1, a2) { fprintf(out_fp, fmt, a1, a2); pnl; }
#define p3(fmt, a1, a2, a3) { fprintf(out_fp, fmt, a1, a2, a3); pnl; }
#define p4(fmt, a1, a2, a3, a4) { fprintf(out_fp, fmt, a1, a2, a3, a4); pnl; }
/*****************************************************************************/
/* */
/* State variables for this module - general */
/* */
/*****************************************************************************/
#define StartUpResource "LoutStartUp"
#define NO_FONT 0 /* actually stolen from z37.c */
#define NO_COLOUR 0
#define NO_TEXTURE 0
#define MAX_GS 50 /* maximum depth of graphics states */
#define STRING_SIZE 16000 /* used by forms code */
BOOLEAN encapsulated; /* TRUE if EPS file is wanted */
static int wordcount; /* atoms printed since last newline */
static int pagecount; /* total number of pages printed */
static BOOLEAN prologue_done; /* TRUE after prologue is printed */
static OBJECT needs; /* Resource needs of included EPSFs */
static OBJECT supplied; /* Resources supplied by this file */
static OBJECT incg_files; /* IncludeGraphicRepeated files */
static FILE *out_fp; /* file to print PostScript on */
/*****************************************************************************/
/* */
/* State variables for this module - graphics state */
/* */
/*****************************************************************************/
typedef struct
{
FONT_NUM gs_font; /* font number of this state */
BOOLEAN gs_baselinemark; /* baseline mark in use */
COLOUR_NUM gs_colour; /* colour number of this state */
TEXTURE_NUM gs_texture; /* texture number of this state */
BOOLEAN gs_cpexists; /* TRUE if a current point exists */
FULL_LENGTH gs_currenty; /* if cpexists, its y coordinate */
short gs_xheight2; /* of font exists, half xheight */
} GRAPHICS_STATE;
static GRAPHICS_STATE gs_stack[MAX_GS];/* graphics state stack */
static int gs_stack_top; /* top of graphics state stack */
static FONT_NUM currentfont; /* font of most recent atom */
static BOOLEAN currentbaselinemark; /* current baselinemark */
static COLOUR_NUM currentcolour; /* colour of most recent atom */
static TEXTURE_NUM currenttexture; /* texture of most recent atom */
static short currentxheight2;/* half xheight in current font */
static BOOLEAN cpexists; /* true if a current point exists */
static FULL_LENGTH currenty; /* if cpexists, its y coordinate */
/*****************************************************************************/
/* */
/* SetBaseLineMarkAndFont(BOOLEAN blm, FONT_NUM f) */
/* */
/* Ensure these are the current baselinemark and font, both in */
/* currentbaselinemark and currentfont, and in the PostScript output. */
/* */
/* The code allows for the possibility that the current font could be */
/* NO_FONT. This is for DefineGraphicNames only, it should never */
/* happen otherwise. */
/* */
/*****************************************************************************/
static void SetBaseLineMarkAndFont(BOOLEAN blm, FONT_NUM f)
{
/* if baselinemark has changed then record change */
if( blm != currentbaselinemark )
{ currentbaselinemark = blm;
if( currentfont != NO_FONT )
currentxheight2 = currentbaselinemark ? 0 : FontHalfXHeight(currentfont);
}
/* if font has changed then record and print change */
if( f != currentfont )
{ currentfont = f;
if( currentfont != NO_FONT )
{
currentxheight2 = currentbaselinemark ? 0 : FontHalfXHeight(currentfont);
fprintf(out_fp, "%hd %s", FontSize(currentfont, nilobj),
FontName(currentfont));
if( ++wordcount >= 5 )
{ pnl;
wordcount = 0;
}
else putc(' ', out_fp);
}
}
} /* end SetBaseLineMarkAndFont */
/*****************************************************************************/
/* */
/* SetColourAndTexture(COLOUR_NUM col, TEXTURE_NUM pat) */
/* */
/* Ensure these are the current colour and texture, both in currentcolour */
/* and currenttexture, and in the PostScript output. */
/* */
/*****************************************************************************/
static void SetColourAndTexture(COLOUR_NUM col, TEXTURE_NUM pat)
{
/* if colour has changed then record and print change */
if( col != currentcolour )
{ currentcolour = col;
if( currentcolour > 0 )
{ fprintf(out_fp, "%s", ColourCommand(currentcolour));
if( ++wordcount >= 5 )
{ pnl;
wordcount = 0;
}
else putc(' ', out_fp);
}
}
/* if texture has changed then record and print change */
if( pat != currenttexture )
{ currenttexture = pat;
if( currenttexture > 0 )
{ fprintf(out_fp, "%s", TextureCommand(currenttexture));
if( ++wordcount >= 5 )
{ pnl;
wordcount = 0;
}
else putc(' ', out_fp);
}
}
} /* end SetColourAndTexture */
/*****************************************************************************/
/* */
/* Data structures for checking links */
/* */
/* We keep a hash table of all dest points, and an ordinary list of all */
/* source points. To check that no dest point appears twice, we consult */
/* the hash table once for each dest point to ensure it is not already */
/* there. To check that every source point has an dest, we run through */
/* the list of source points at end of run and look each one up in the */
/* dest point hash table. */
/* */
/*****************************************************************************/
/*****************************************************************************/
/* */
/* LINK_DEST_TABLE */
/* */
/* A symbol table permitting access to link dest name objects. */
/* The table will automatically enlarge to accept any number of entries. */
/* */
/* ltab_new(newsize) New empty table, newsize capacity */
/* ltab_insert(x, &S) Insert new link dest name object x into S */
/* ltab_retrieve(str, S) Retrieve link dest name object named str */
/* ltab_debug(S, fp) Debug print of table S to file fp */
/* */
/*****************************************************************************/
typedef struct
{ int linktab_size; /* size of table */
int linktab_count; /* number of objects held */
OBJECT linktab_item[1];
} *LINK_DEST_TABLE;
#define ltab_size(S) (S)->linktab_size
#define ltab_count(S) (S)->linktab_count
#define ltab_item(S, i) (S)->linktab_item[i]
#define hash(pos, str, S) \
{ FULL_CHAR *p = str; \
pos = *p++; \
while( *p ) pos += *p++; \
pos = pos % ltab_size(S); \
}
static LINK_DEST_TABLE ltab_new(int newsize)
{ LINK_DEST_TABLE S; int i;
/* ifdebug(DMA, D, DebugRegisterUsage(MEM_LINK_TAB, 1,
2*sizeof(int) + newsize * sizeof(OBJECT))); */
S = (LINK_DEST_TABLE)
malloc(2*sizeof(int) + newsize * sizeof(OBJECT));
if( S == (LINK_DEST_TABLE) NULL )
Error(49, 1, "run out of memory enlarging link dest table", FATAL, no_fpos);
ltab_size(S) = newsize;
ltab_count(S) = 0;
for( i = 0; i < newsize; i++ ) ltab_item(S, i) = nilobj;
return S;
} /* end ltab_new */
static void ltab_insert(OBJECT x, LINK_DEST_TABLE *S);
static LINK_DEST_TABLE ltab_rehash(LINK_DEST_TABLE S, int newsize)
{ LINK_DEST_TABLE NewS; int i; OBJECT z, link, y;
NewS = ltab_new(newsize);
for( i = 0; i < ltab_size(S); i++ )
{ z = ltab_item(S, i);
if( z != nilobj )
{
for( link = Down(z); link != z; link = NextDown(link) )
{
Child(y, link)
;
ltab_insert(y, &NewS);
}
}
}
free(S);
return NewS;
} /* end ltab_rehash */
static void ltab_insert(OBJECT x, LINK_DEST_TABLE *S)
{ int pos; OBJECT z, link, y;
if( ltab_count(*S) >= ltab_size(*S) - 1 ) /* one less since 0 unused */
*S = ltab_rehash(*S, 2*ltab_size(*S));
hash(pos, string(x), *S);
if( ltab_item(*S, pos) == nilobj ) New(ltab_item(*S, pos), ACAT);
z = ltab_item(*S, pos);
for( link = Down(z); link != z; link = NextDown(link) )
{ Child(y, link)
;
if( StringEqual(string(x), string(y)) )
{ Error(49, 2, "link name %s used twice (first at%s)",
WARN, &fpos(x), string(x), EchoFilePos(&fpos(y)));
}
}
Link(ltab_item(*S, pos), x);
ltab_count(*S)++;
} /* end ltab_insert */
static OBJECT ltab_retrieve(FULL_CHAR *str, LINK_DEST_TABLE S)
{ OBJECT x, link, y; int pos;
hash(pos, str, S);
x = ltab_item(S, pos);
if( x == nilobj ) return nilobj;
for( link = Down(x); link != x; link = NextDown(link) )
{ Child(y, link)
;
if( StringEqual(str, string(y)) ) return y;
}
return nilobj;
} /* end ltab_retrieve */
#if DEBUG_ON
static void ltab_debug(LINK_DEST_TABLE S, FILE *fp)
{ int i; OBJECT x, link, y;
fprintf(fp, " table size: %d; current number of keys: %d%s",
ltab_size(S), ltab_count(S), STR_NEWLINE);
for( i = 0; i < ltab_size(S); i++ )
{ x = ltab_item(S, i);
fprintf(fp, "ltab_item(S, %d) =", i);
if( x == nilobj )
fprintf(fp, " <nilobj>");
else if( type(x) != ACAT )
fprintf(fp, " not ACAT!");
else for( link = Down(x); link != x; link = NextDown(link) )
{ Child(y, link)
;
fprintf(fp, " %s",
is_word(type(y)) ? string(y) : AsciiToFull("not-WORD!"));
}
fprintf(fp, "%s", STR_NEWLINE);
}
} /* end ltab_debug */
#endif
static LINK_DEST_TABLE link_dest_tab; /* the link dest names */
static OBJECT link_source_list; /* the link source names */
/*****************************************************************************/
/* */
/* Print a number x on file fp. */
/* */
/*****************************************************************************/
#define printnum(x, fp) \
{ char buff[20]; register int i, y; \
if( x >= 0 ) y = x; \
else { y = -x; putc(CH_MINUS, fp); } \
i = 0; \
do { buff[i++] = numtodigitchar(y % 10); \
} while( (y = (y / 10)) > 0 ); \
do { --i; putc(buff[i], fp); \
} while( i ); \
}
/*****************************************************************************/
/* */
/* PS_PrintInitialize(FILE *fp) */
/* */
/* Initialize this module; fp is the output file. */
/* */
/*****************************************************************************/
static void PS_PrintInitialize(FILE *fp, BOOLEAN enc)
{
debug0(DPO, DD, "PS_PrintInitialize(fp)");
out_fp = fp;
encapsulated = enc;
prologue_done = FALSE;
gs_stack_top = -1;
currentfont = NO_FONT;
currentbaselinemark = FALSE;
currentcolour = NO_COLOUR;
currenttexture = NO_TEXTURE;
cpexists = FALSE;
wordcount = pagecount = 0;
New(needs, ACAT);
New(supplied, ACAT);
incg_files = NULL;
debug0(DPO, DD, "PS_PrintInitialize returning.");
link_dest_tab = ltab_new(200);
New(link_source_list, ACAT);
} /* end PS_PrintInitialize */
/*****************************************************************************/
/* */
/* void PS_PrintLength(FULL_CHAR *buff, int length, int length_dim) */
/* */
/* Print a length (debugging only) */
/* */
/*****************************************************************************/
static void PS_PrintLength(FULL_CHAR *buff, int length, int length_dim)
{
sprintf( (char *) buff, "%.3fc", (float) length/CM);
}
/*****************************************************************************/
/* */
/* void PS_IncGRepeated(OBJECT x) */
/* */
/* Declare x to be an @IncludeGraphicRepeated file of the given type */
/* (either @IncludeGraphicRepeated or @SysIncludeGraphicRepeated). */
/* */
/*****************************************************************************/
void PS_IncGRepeated(OBJECT x)
{
if( incg_files == nilobj )
New(incg_files, ACAT);
Link(incg_files, x);
}
/*****************************************************************************/
/* */
/* int PS_FindIncGRepeated(OBJECT x, int typ) */
/* */
/* Find the number of @IncludeGraphicRepeated file string(x), or else */
/* return 0 if not known. */
/* */
/* Check that the type conforms with typ, if not then warn user. */
/* */
/*****************************************************************************/
static int PS_FindIncGRepeated(OBJECT x, int typ)
{ OBJECT link, y; int i;
if( incg_files != nilobj )
{
for( i=1, link=Down(incg_files); link!=incg_files; i++, link=NextDown(link))
{
Child(y, link)
;
if( StringEqual(string(x), string(y)) )
{
if( typ == INCGRAPHIC && incg_type(y) == SINCGRAPHIC )
{
Error(49, 15, "use of %s rather than %s contradicts prior %s at %s",
WARN, &fpos(x), KW_INCGRAPHIC, KW_SINCGRAPHIC,
KW_SINCG_REPEATED, EchoFilePos(&fpos(y)));
}
else if( typ == SINCGRAPHIC && incg_type(y) == INCGRAPHIC )
{
Error(49, 16, "use of %s rather than %s contradicts prior %s at %s",
WARN, &fpos(x), KW_SINCGRAPHIC, KW_INCGRAPHIC,
KW_INCG_REPEATED, EchoFilePos(&fpos(y)));
}
else
return i;
}
}
}
return 0;
}
/*****************************************************************************/
/* */
/* void PS_PrintPageSetupForFont(OBJECT face, int font_curr_page, */
/* FULL_CHAR *font_name, FULL_CHAR *short_name) */
/* */
/* Print the page setup commands required to use a font on some page: */
/* */
/* face The font face record, defining which font we need */
/* font_curr_page The current page number */
/* font_name The name of the font */
/* short_name Internal short name for the font */
/* */
/*****************************************************************************/
static void PS_PrintPageSetupForFont(OBJECT face, int font_curr_page,
FULL_CHAR *font_name, FULL_CHAR *short_name)
{
p1("%%%%IncludeResource: font %s", font_name);
if( font_recoded(face) )
{
MapEnsurePrinted(font_mapping(face), font_curr_page);
p4("/%s%s %s /%s LoutRecode", font_name, short_name,
MapEncodingName(font_mapping(face)), font_name);
p3("/%s { /%s%s LoutFont } def", short_name, font_name, short_name);
}
else p2("/%s { /%s LoutFont } def", short_name, font_name);
} /* end PrintPageSetupForFont */
/*****************************************************************************/
/* */
/* void PS_PrintPageResourceForFont(FULL_CHAR *font_name, BOOLEAN first) */
/* */
/* Print page resource info on file fp for font font_name; first is true */
/* if this is the first resource on this page. */
/* */
/*****************************************************************************/
static void PS_PrintPageResourceForFont(FULL_CHAR *font_name, BOOLEAN first)
{
p2("%s font %s", first ? "%%PageResources:" : "%%+", font_name);
} /* end PS_PrintPageResourceForFont */
/*****************************************************************************/
/* */
/* static void PS_PrintMapping(MAPPING m) */
/* */
/* Print mapping m onto out_fp. */
/* */
/*****************************************************************************/
static void PS_PrintMapping(MAPPING m)
{ MAP_VEC map = MapTable[m]; int i;
p1("%%%%BeginResource: encoding %s", string(map->name));
p1("/%s [", string(map->name));
for( i = 0; i < MAX_CHARS; i++ )
fprintf(out_fp, "/%s%s", string(map->vector[i]),
(i+1)%8 != 0 ? " " : (char *) STR_NEWLINE);
p0("] def");
p0("%%EndResource");
pnl;
} /* end PrintMapping */
/*****************************************************************************/
/* */
/* PS_BtoI(const unsigned char *buf) */
/* */
/* Decode a 4 byte value from an EPSF header */
/* in a machine independent way. */
/* */
/*****************************************************************************/
static long PS_BtoI(const unsigned char *buf)
{
return ((buf[ 0 ] & 0xFF)) |
((buf[ 1 ] & 0xFF) << 8) |
((buf[ 2 ] & 0xFF) << 16) |
((buf[ 3 ] & 0xFF) << 24);
}
/*****************************************************************************/
/* */
/* PS_FindEPSSegment(FILE *fp, long *len) */
/* */
/* Find the EPS segment of an EPS file */
/* If the file is an EPSF with a EPS segment */
/* skip to the start of the EPS segment */
/* set the length to the length of the EPS segment */
/* Otherwise if the file is plain EPS */
/* leave the file pointer at the start of the file */
/* set the length to -1 */
/* */
/*****************************************************************************/
static void PS_FindEPSSegment(FILE *fp, long *len)
{
enum epsf_header_enum {
HEADER_LEN = 30, /* length of header */
HEADER_MAGIC_0 = 0xC5, /* E */
HEADER_MAGIC_1 = 0xD0, /* P */
HEADER_MAGIC_2 = 0xD3, /* S */
HEADER_MAGIC_3 = 0xC6, /* F */
HEADER_EPS_START_OFFSET = 4, /* offset of eps start */
HEADER_EPS_LENGTH_OFFSET = 8 /* offset of eps length */
};
unsigned char epsf_header[ HEADER_LEN ];
long original_position;
long eps_start;
*len = -1;
/* check for a valid file pointer */
if( fp == NULL )
{
return;
}
/* save the original file position */
original_position = ftell(fp);
if( original_position < 0 )
{
original_position = 0;
}
/* read and parse the header */
rewind(fp);
if( fread(epsf_header, 1, HEADER_LEN, fp) == HEADER_LEN &&
epsf_header[0] == HEADER_MAGIC_0 &&
epsf_header[1] == HEADER_MAGIC_1 &&
epsf_header[2] == HEADER_MAGIC_2 &&
epsf_header[3] == HEADER_MAGIC_3 &&
(eps_start = PS_BtoI( &epsf_header[ HEADER_EPS_START_OFFSET ] )) > 0 &&
(*len = PS_BtoI( &epsf_header[ HEADER_EPS_LENGTH_OFFSET ] )) >= 0 &&
fseek(fp, eps_start, SEEK_SET) != -1 )
{
/* success locating the EPS segment */
}
else
{
/* this file has no preview */
/* reset the file pointer */
*len = -1;
fseek(fp, original_position, SEEK_SET);
}
}
/*****************************************************************************/
/* */
/* void PS_PrintEPSFile(FILE *fp, FILE_POS *pos, BOOLEAN strip_all) */
/* */
/* Original by Jeff Kingston, modified Jul 2008 by William Bader mainly */
/* to allow EPS files to contain null characters. */
/* */
/* Print EPS file fp to out_fp. */
/* */
/* If strip_all is TRUE, strip out all lines beginning with %%, else */
/* strip out only the most dangerous ones. */
/* */
/*****************************************************************************/
#define SKIPPING 0
#define READING_DNR 1
#define FINISHED 2
static BOOLEAN strip_out(FULL_CHAR *buff, BOOLEAN strip_all)
{
if( strip_all && StringBeginsWith(buff, AsciiToFull("%%")) ) return TRUE;
if( StringBeginsWith(buff, AsciiToFull("%%EOF")) ) return TRUE;
if( StringBeginsWith(buff, AsciiToFull("%%Trailer")) ) return TRUE;
return FALSE;
} /* end strip_out */
static void PS_PrintEPSFile(FILE *fp, FILE_POS *pos, BOOLEAN strip_all)
{ int state, x, count; OBJECT y; long len;
FULL_CHAR buff[MAX_LINE];
debug0(DPO, DD, "[ PS_PrintEPSFile");
assert( fp != NULL, "PS_PrintEPSFile: fp!" );
/* state = (ReadOneLine(fp, buff, MAX_LINE) == 0) ? FINISHED : SKIPPING; */
PS_FindEPSSegment(fp, &len); /* left out by Jeff's mistake in 3.37 */
state = (ReadOneBinaryLine(fp, buff, MAX_LINE, &count, &len) == 0) ?
FINISHED : SKIPPING;
while( state != FINISHED ) switch(state)
{
case SKIPPING:
if( StringBeginsWith(buff, AsciiToFull("%%DocumentNeededResources:")) &&
!StringContains(buff, AsciiToFull("(atend)")) )
{ y = MakeWord(WORD, &buff[StringLength("%%DocumentNeededResources:")],
no_fpos);
Link(needs, y);
/* ***
state = (ReadOneLine(fp, buff, MAX_LINE) == 0) ? FINISHED : READING_DNR;
*** */
state = (ReadOneBinaryLine(fp, buff, MAX_LINE, &count, &len) == 0) ?
FINISHED : READING_DNR;
}
else
{ if( StringBeginsWith(buff, AsciiToFull("%%LanguageLevel:")) )
{
if( sscanf((char *) buff, "%%%%LanguageLevel: %d", &x) != 1 || x > 2 )
Error(49,10,"ignoring LanguageLevel comment in EPS file",WARN,pos);
}
if( StringBeginsWith(buff, AsciiToFull("%%Extensions:")) )
Error(49, 11, "ignoring Extensions comment in EPS file", WARN, pos);
if( !strip_out(buff, strip_all) )
{
/* ***
StringFPuts(buff, out_fp);
pnl;
*** */
fwrite(buff, 1, count, out_fp);
}
/* ***
state = (ReadOneLine(fp, buff, MAX_LINE) == 0) ? FINISHED : SKIPPING;
*** */
state = (ReadOneBinaryLine(fp, buff, MAX_LINE, &count, &len) == 0) ?
FINISHED : SKIPPING;
}
break;
case READING_DNR:
if( StringBeginsWith(buff, AsciiToFull("%%+")) )
{ y = MakeWord(WORD, &buff[StringLength(AsciiToFull("%%+"))], no_fpos);
Link(needs, y);
/* ***
state = (ReadOneLine(fp, buff, MAX_LINE) == 0) ? FINISHED : READING_DNR;
*** */
state = (ReadOneBinaryLine(fp, buff, MAX_LINE, &count, &len) == 0) ?
FINISHED : READING_DNR;
}
else
{ if( !strip_out(buff, strip_all) )
{
/* ***
StringFPuts(buff, out_fp);
pnl;
*** */
fwrite(buff, 1, count, out_fp);
}
/* ***
state = (ReadOneLine(fp, buff, MAX_LINE) == 0) ? FINISHED : SKIPPING;
*** */
state = (ReadOneBinaryLine(fp, buff, MAX_LINE, &count, &len) == 0) ?
FINISHED : SKIPPING;
}
break;
}
pnl; /* in case the last line does not end with a line terminator */
fclose(fp);
debug0(DPO, DD, "] PS_PrintEPSFile returning.");
} /* end PS_PrintEPSFile */
/*****************************************************************************/
/* */
/* char *MediaName(int h, int v) */
/* */
/* Return the PostScript MediaName attribute appropriate to a page of */
/* width h and height v. */
/* */
/* Communicated by Valeriy E. Ushakov, who wrote: */
/* */
/* "Attached is a patch to recognize known paper sizes and emit them as */
/* media name in DocumentMedia comment. GhostView and other PostScript */
/* viewers recognize these names and display them to the user. Thus user */
/* knows what paper size document uses without having to know the magic */
/* numbers." */
/* */
/*****************************************************************************/
static const char *MediaName(int h, int v)
{
struct paper {
const char *name;
FULL_LENGTH width, height;
};
/* names for known paper sizes */
static const struct paper paper_map[] = {
{ "Letter", 612*PT, 792*PT },
{ "Tabloid", 792*PT, 1224*PT },
{ "Ledger", 1224*PT, 792*PT },
{ "Legal", 612*PT, 1008*PT },
{ "Statement", 396*PT, 612*PT },
{ "Executive", 540*PT, 720*PT },
{ "A3", 842*PT, 1190*PT },
{ "A4", 595*PT, 842*PT },
{ "A5", 420*PT, 595*PT },
{ "B4", 729*PT, 1032*PT },
{ "B5", 516*PT, 729*PT },
{ "Folio", 612*PT, 936*PT },
{ "Quarto", 610*PT, 780*PT },
{ "10x14", 720*PT, 1008*PT },
{ NULL, 0, 0 }
};
/* default media name */
static const char *user_defined = "Plain";
const struct paper *p;
for (p = paper_map; p->name; ++p) {
if ((h == p->width) && (v == p->height)) {
return p->name;
}
}
return user_defined;
}
/*****************************************************************************/
/* */
/* static void PrintBeforeFirstPage(FULL_LENGTH h, FULL_LENGTH v, */
/* FULL_CHAR *label) */
/* */
/* Print whatever is needed before the start of the first page: the */
/* PostScript prologue, augmented with any @PrependGraphic or */
/* @SysPrependGraphic files specified by the user. The following */
/* PostScript operators are defined: */
/* */
/* scale_factor fnt scale and set font */
/* x_coordinate x move to x_coordinate, current y coordinate */
/* string s show string */
/* number in result is number inches */
/* number cm result is number centimetres */
/* number pt result is number points */
/* number sp result is number spaces */
/* number vs result is number vspaces */
/* number ft result is number font-sizes */
/* */
/* as well as LoutGraphic, for use with the @Graphic operator: */
/* */
/* xsize ysize xmark ymark fr vs sp LoutGraphic - */
/* */
/* Define xmark, ymark, xsize, ysize to be the positions of */
/* these features of x, and define symbols ft, vs and sp */
/* to be the current font size, line separation, and space width. */
/* */
/*****************************************************************************/
static void PS_PrintBeforeFirstPage(FULL_LENGTH h, FULL_LENGTH v,
FULL_CHAR *label)
{ FILE_NUM fnum; FULL_CHAR *p;
debug2(DPO, DD, "PrintBeforeFirst(%s, %s)", EchoLength(h), EchoLength(v));
/* print header comments for PostScript DSC 3.0 output */
p0(encapsulated ? "%!PS-Adobe-3.0 EPSF-3.0" : "%!PS-Adobe-3.0");
p1("%%%%Creator: %s", LOUT_VERSION);
p1("%%%%CreationDate: %s", TimeString());
p0("%%DocumentData: Binary");
p0("%%DocumentNeededResources: (atend)");
p0("%%DocumentSuppliedResources: (atend)");
p3("%%%%DocumentMedia: %s %d %d 0 white ()", MediaName(h, v), h/PT, v/PT);
p0("%%PageOrder: Ascend");
p0("%%LanguageLevel: 2");
p0("%%Pages: (atend)");
p2("%%%%BoundingBox: 0 0 %d %d", h/PT, v/PT);
p0("%%EndComments");
/* print procedure definitions part of header */
p0("%%BeginProlog");
if( encapsulated )
{
p0("50 dict begin % EPSF defs in own dict");
pnl;
}
p1("%%%%BeginResource: procset %s", StartUpResource);
p0("/cp_x 0 def");
p0("/cp_y 0 def");
p0("/louts 0 def");
p0("/loutv 0 def");
p0("/loutf 0 def");
p0("/ymark 0 def");
p0("/xmark 0 def");
p0("/ysize 0 def");
p0("/xsize 0 def");
p0("/save_cp { currentpoint /cp_y exch def /cp_x exch def } bind def");
p0("/restore_cp { cp_x cp_y moveto } bind def");
p0("/outline { gsave 1 1 1 setrgbcolor dup show save_cp");
p0(" grestore true charpath stroke restore_cp } bind def");
p0("/m { 3 1 roll moveto show } bind def");
p0("/mo { 3 1 roll moveto outline } bind def");
p0("/s { exch currentpoint exch pop moveto show } bind def");
p0("/so { exch currentpoint exch pop moveto outline } bind def");
p0("/k { exch neg 0 rmoveto show } bind def");
p0("/ko { exch neg 0 rmoveto outline } bind def");
p0("/r { exch 0 rmoveto show } bind def");
p0("/ro { exch 0 rmoveto outline } bind def");
p0("/c { gsave 3 1 roll rmoveto show grestore } bind def");
p0("/co { gsave 3 1 roll rmoveto outline grestore } bind def");
p0("/ul { gsave setlinewidth dup 3 1 roll");
p0(" moveto lineto stroke grestore } bind def");
p1("/in { %d mul } bind def", IN);
p1("/cm { %.3f mul } bind def", CM);
p1("/pt { %d mul } bind def", PT);
p1("/em { %d mul } bind def", EM);
p0("/sp { louts mul } def");
p0("/vs { loutv mul } def");
p0("/ft { loutf mul } def");
p0("/dg { } def");
pnl;
p0("/LoutGraphic {");
p0(" /louts exch def");
p0(" /loutv exch def");
p0(" /loutf exch def");
p0(" /ymark exch def");
p0(" /xmark exch def");
p0(" /ysize exch def");
p0(" /xsize exch def");
p0("} def");
pnl;
p0("/LoutGr2 { gsave translate LoutGraphic gsave } def");
pnl;
/* print definition used by Lout output to recode fonts */
/* adapted from PostScript Language Reference Manual (2nd Ed), p. 275 */
/* usage: /<fullname> <encodingvector> /<originalname> LoutRecode - */
p0("/LoutFont");
p0("{ findfont exch scalefont setfont");
p0("} bind def");
pnl;
p0("/LoutRecode {");
p0(" { findfont dup length dict begin");
p0(" {1 index /FID ne {def} {pop pop} ifelse} forall");
p0(" /Encoding exch def");
p0(" currentdict end definefont pop");
p0(" }");
p0(" stopped pop");
p0("} bind def");
pnl;
/* print definitions used by Lout output when including EPSF files */
/* copied from PostScript Language Reference Manual (2nd Ed.), p. 726 */
/* but then revised to follow Adobe's Technical Note #5144 */
p0("/PreEPSF_state 0 def");
p0("/dict_stack 0 def");
p0("/ops_count 0 def");
p0("/LoutStartEPSF { % prepare for EPSF inclusion");
p0(" /PreEPSF_state save def");
p0(" /dict_stack countdictstack def");
p0(" /ops_count count 1 sub def");
p0(" 20 dict begin");
p0(" /showpage {} def");
p0(" 0 setgray 0 setlinecap");
p0(" 1 setlinewidth 0 setlinejoin");
p0(" 10 setmiterlimit [] 0 setdash newpath");
p0(" /languagelevel where");
p0(" { pop languagelevel");
p0(" 1 ne");
p0(" { false setstrokeadjust false setoverprint");
p0(" } if");
p0(" } if");
p0("} bind def");
pnl;
p0("/LoutEPSFCleanUp { % clean up after EPSF inclusion");
p0(" count ops_count sub { pop } repeat");
p0(" countdictstack dict_stack sub { end } repeat");
p0(" PreEPSF_state restore");
p0("} bind def");
pnl;
/* print textures definitions - see Expert's Guide for explanation */
p0("% Find current texture (may be null)");
p0("% - LoutCurrentP p");
p0("/LoutCurrentP");
p0("{");
p0(" currentcolorspace");
p0(" 0 get /Pattern eq");
p0(" {");
p0(" [ currentcolor ]");
p0(" dup length 1 sub get");
p0(" }");
p0(" {");
p0(" null");
p0(" } ifelse");
p0("} def");
pnl;
p0("% Find current color and color space");
p0("% - LoutCurrentCCS c cs");
p0("/LoutCurrentCCS");
p0("{");
p0(" LoutCurrentP dup null eq");
p0(" {");
p0(" pop [ currentcolor ]");
p0(" currentcolorspace");
p0(" }");
p0(" {");
p0(" dup");
p0(" /UnderlyingColor get");
p0(" exch /UnderlyingColorSpace get");
p0(" } ifelse");
p0("} def");
pnl;
p0("% Install c, cs, and (a copy of) p into graphics state");
p0("% c cs p LoutSetCCSP -");
p0("/LoutSetCCSP");
p0("{");
p0(" dup null eq");
p0(" {");
p0(" pop setcolorspace");
p0(" aload pop setcolor");
p0(" }");
p0(" {");
p0(" % copy pattern dictionary");
p0(" 12 dict copy");
pnl;
p0(" % record cs and c in p");
p0(" dup /UnderlyingColorSpace 3 index");
p0(" put");
p0(" dup /UnderlyingColor 4 index");
p0(" put");
pnl;
p0(" % do setcolorspace and setcolor");
p0(" dup /PaintType get 1 eq");
p0(" {");
p0(" [ /Pattern ] setcolorspace");
p0(" setcolor");
p0(" pop pop");
p0(" }");
p0(" {");
p0(" [ /Pattern");
p0(" 4 -1 roll");
p0(" ] setcolorspace");
p0(" exch aload length 1 add");
p0(" -1 roll");
p0(" setcolor");
p0(" } ifelse");
p0(" } ifelse");
p0("} bind def");
pnl;
p0("% num LoutSetGray -");
p0("/LoutSetGray");
p0("{");
p0(" [ 2 1 roll ]");
p0(" [ /DeviceGray ]");
p0(" LoutCurrentP");
p0(" LoutSetCCSP");
p0("} bind def");
pnl;
p0("% r g b LoutSetRGBColor -");
p0("/LoutSetRGBColor");
p0("{");
p0(" [ 4 1 roll ]");
p0(" [ /DeviceRGB ]");
p0(" LoutCurrentP");
p0(" LoutSetCCSP");
p0("} bind def");
pnl;
p0("% h s b LoutSetHSBColor -");
p0("/LoutSetHSBColor");
p0("{");
p0(" gsave sethsbcolor");
p0(" currentrgbcolor grestore");