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third-party-mirror / R / refs/heads/R-3-6-branch / . / src / library / grDevices / src / devPS.c
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/*
* R : A Computer Language for Statistical Data Analysis
* Copyright (C) 1998--2018 The R Core Team
* Copyright (C) 1995, 1996 Robert Gentleman and Ross Ihaka
*
* 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 of the License, 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, a copy is available at
* https://www.R-project.org/Licenses/
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <Defn.h>
#include <stdio.h>
#include <ctype.h>
#include <limits.h> /* required for MB_LEN_MAX */
#include <wchar.h>
#include <wctype.h>
static void
mbcsToSbcs(const char *in, char *out, const char *encoding, int enc);
#include <R_ext/Riconv.h>
#include <Rmath.h> /* for fround */
#define R_USE_PROTOTYPES 1
#include <R_ext/GraphicsEngine.h>
#include <R_ext/Error.h>
#include <R_ext/RS.h>
#include "Fileio.h"
#include "grDevices.h"
#ifdef HAVE_ERRNO_H
#include <errno.h>
#else
extern int errno;
#endif
#include "zlib.h"
#ifndef max
#define max(a,b) ((a > b) ? a : b)
#endif
/* from connections.o */
extern gzFile R_gzopen (const char *path, const char *mode);
extern char *R_gzgets(gzFile file, char *buf, int len);
extern int R_gzclose (gzFile file);
#define INVALID_COL 0xff0a0b0c
/* Define this to use hyphen except in -[0-9] */
#undef USE_HYPHEN
/* In ISOLatin1, minus is 45 and hyphen is 173 */
#ifdef USE_HYPHEN
static char PS_hyphen = 173;
#endif
#define USERAFM 999
/* Part 0. AFM File Names */
static const char *CIDBoldFontStr1 =
"16 dict begin\n"
" /basecidfont exch def\n"
" /basefont-H /.basefont-H /Identity-H [ basecidfont ] composefont def\n"
" /basefont-V /.basefont-V /Identity-V [ basecidfont ] composefont def\n"
" /CIDFontName dup basecidfont exch get def\n"
" /CIDFontType 1 def\n"
" /CIDSystemInfo dup basecidfont exch get def\n"
" /FontInfo dup basecidfont exch get def\n"
" /FontMatrix [ 1 0 0 1 0 0 ] def\n"
" /FontBBox [\n"
" basecidfont /FontBBox get cvx exec\n"
" 4 2 roll basecidfont /FontMatrix get transform\n"
" 4 2 roll basecidfont /FontMatrix get transform\n"
" ] def\n"
" /cid 2 string def\n";
static const char *CIDBoldFontStr2 =
" /BuildGlyph {\n"
" gsave\n"
" exch begin\n"
" dup 256 idiv cid exch 0 exch put\n"
" 256 mod cid exch 1 exch put\n"
" rootfont\n"
" /WMode known { rootfont /WMode get 1 eq } { false } ifelse\n"
" { basefont-V } { basefont-H } ifelse setfont\n"
" .03 setlinewidth 1 setlinejoin\n"
" newpath\n"
" 0 0 moveto cid false charpath stroke\n"
" 0 0 moveto cid show\n"
" currentpoint setcharwidth\n"
" end\n"
" grestore\n"
" } bind def\n"
" currentdict\n"
"end\n"
"/CIDFont defineresource pop\n";
/* Part 1. AFM File Parsing. */
/* These are the basic entities in the AFM file */
#define BUFSIZE 512
#define NA_SHORT -30000
typedef struct {
unsigned char c1;
unsigned char c2;
short kern;
} KP;
typedef struct {
short FontBBox[4];
short CapHeight;
short XHeight;
short Descender;
short Ascender;
short StemH;
short StemV;
short ItalicAngle;
struct {
short WX;
short BBox[4];
} CharInfo[256];
KP *KernPairs;
short KPstart[256];
short KPend[256];
short nKP;
short IsFixedPitch;
} FontMetricInfo;
enum {
Empty,
StartFontMetrics,
Comment,
FontName,
EncodingScheme,
FullName,
FamilyName,
Weight,
ItalicAngle,
IsFixedPitch,
UnderlinePosition,
UnderlineThickness,
Version,
Notice,
FontBBox,
CapHeight,
XHeight,
Descender,
Ascender,
StartCharMetrics,
C,
CH,
EndCharMetrics,
StartKernData,
StartKernPairs,
KPX,
EndKernPairs,
EndKernData,
StartComposites,
CC,
EndComposites,
EndFontMetrics,
StdHW,
StdVW,
CharacterSet,
Unknown
};
static const struct {
const char *keyword;
const int code;
}
KeyWordDictionary[] = {
{ "StartFontMetrics", StartFontMetrics },
{ "Comment", Comment },
{ "FontName", FontName },
{ "EncodingScheme", EncodingScheme },
{ "FullName", FullName },
{ "FamilyName", FamilyName },
{ "Weight", Weight },
{ "ItalicAngle", ItalicAngle },
{ "IsFixedPitch", IsFixedPitch },
{ "UnderlinePosition", UnderlinePosition },
{ "UnderlineThickness", UnderlineThickness },
{ "Version", Version },
{ "Notice", Notice },
{ "FontBBox", FontBBox },
{ "CapHeight", CapHeight },
{ "XHeight", XHeight },
{ "Descender", Descender },
{ "Ascender", Ascender },
{ "StartCharMetrics", StartCharMetrics },
{ "C ", C },
{ "CH ", CH },
{ "EndCharMetrics", EndCharMetrics },
{ "StartKernData", StartKernData },
{ "StartKernPairs", StartKernPairs },
{ "KPX ", KPX },
{ "EndKernPairs", EndKernPairs },
{ "EndKernData", EndKernData },
{ "StartComposites", StartComposites },
{ "CC ", CC },
{ "EndComposites", EndComposites },
{ "EndFontMetrics", EndFontMetrics },
{ "StdHW", StdHW },
{ "StdVW", StdVW },
{ "CharacterSet", CharacterSet},
{ NULL, Unknown },
};
static int MatchKey(char const * l, char const * k)
{
while (*k)
if (*k++ != *l++) return 0;
return 1;
}
static int KeyType(const char * const s)
{
int i;
if (*s == '\n')
return Empty;
for (i = 0; KeyWordDictionary[i].keyword; i++)
if (MatchKey(s, KeyWordDictionary[i].keyword))
return KeyWordDictionary[i].code;
// printf("Unknown %s\n", s); // not needed, PR#15057 found it annoying
return Unknown;
}
static char *SkipToNextItem(char *p)
{
while (!isspace((int)*p)) p++;
while (isspace((int)*p)) p++;
return p;
}
static char *SkipToNextKey(char *p)
{
while (*p != ';') p++;
p++;
while (isspace((int)*p)) p++;
return p;
}
static int GetFontBBox(const char *buf, FontMetricInfo *metrics)
{
if (sscanf(buf, "FontBBox %hd %hd %hd %hd",
&(metrics->FontBBox[0]),
&(metrics->FontBBox[1]),
&(metrics->FontBBox[2]),
&(metrics->FontBBox[3])) != 4) return 0;
#ifdef DEBUG_PS2
Rprintf("FontBBox %d %d %d %d\n",
(metrics->FontBBox[0]),
(metrics->FontBBox[1]),
(metrics->FontBBox[2]),
(metrics->FontBBox[3]));
#endif
return 1;
}
/* The longest named Adobe glyph is 39 chars:
whitediamondcontainingblacksmalldiamond
*/
typedef struct {
char cname[40];
} CNAME;
/* If reencode > 0, remap to new encoding */
static int GetCharInfo(char *buf, FontMetricInfo *metrics,
CNAME *charnames, CNAME *encnames,
int reencode)
{
char *p = buf, charname[40];
int nchar, nchar2 = -1, i;
short WX;
if (!MatchKey(buf, "C ")) return 0;
p = SkipToNextItem(p);
sscanf(p, "%d", &nchar);
if ((nchar < 0 || nchar > 255) && !reencode) return 1;
p = SkipToNextKey(p);
if (!MatchKey(p, "WX")) return 0;
p = SkipToNextItem(p);
sscanf(p, "%hd", &WX);
p = SkipToNextKey(p);
if (!MatchKey(p, "N ")) return 0;
p = SkipToNextItem(p);
if(reencode) {
sscanf(p, "%39s", charname);
#ifdef DEBUG_PS2
Rprintf("char name %s\n", charname);
#endif
/* a few chars appear twice in ISOLatin1 */
nchar = nchar2 = -1;
for (i = 0; i < 256; i++)
if(!strcmp(charname, encnames[i].cname)) {
strcpy(charnames[i].cname, charname);
if(nchar == -1) nchar = i; else nchar2 = i;
}
if (nchar == -1) return 1;
} else {
sscanf(p, "%39s", charnames[nchar].cname);
}
metrics->CharInfo[nchar].WX = WX;
p = SkipToNextKey(p);
if (!MatchKey(p, "B ")) return 0;
p = SkipToNextItem(p);
sscanf(p, "%hd %hd %hd %hd",
&(metrics->CharInfo[nchar].BBox[0]),
&(metrics->CharInfo[nchar].BBox[1]),
&(metrics->CharInfo[nchar].BBox[2]),
&(metrics->CharInfo[nchar].BBox[3]));
#ifdef DEBUG_PS2
Rprintf("nchar = %d %d %d %d %d %d\n", nchar,
metrics->CharInfo[nchar].WX,
metrics->CharInfo[nchar].BBox[0],
metrics->CharInfo[nchar].BBox[1],
metrics->CharInfo[nchar].BBox[2],
metrics->CharInfo[nchar].BBox[3]);
#endif
if (nchar2 > 0) {
metrics->CharInfo[nchar2].WX = WX;
sscanf(p, "%hd %hd %hd %hd",
&(metrics->CharInfo[nchar2].BBox[0]),
&(metrics->CharInfo[nchar2].BBox[1]),
&(metrics->CharInfo[nchar2].BBox[2]),
&(metrics->CharInfo[nchar2].BBox[3]));
#ifdef DEBUG_PS2
Rprintf("nchar = %d %d %d %d %d %d\n", nchar2,
metrics->CharInfo[nchar2].WX,
metrics->CharInfo[nchar2].BBox[0],
metrics->CharInfo[nchar2].BBox[1],
metrics->CharInfo[nchar2].BBox[2],
metrics->CharInfo[nchar2].BBox[3]);
#endif
}
return 1;
}
static int GetKPX(char *buf, int nkp, FontMetricInfo *metrics,
CNAME *charnames)
{
char *p = buf, c1[50], c2[50];
int i, done = 0;
p = SkipToNextItem(p);
sscanf(p, "%49s %49s %hd", c1, c2, &(metrics->KernPairs[nkp].kern));
if (streql(c1, "space") || streql(c2, "space")) return 0;
for(i = 0; i < 256; i++) {
if (!strcmp(c1, charnames[i].cname)) {
metrics->KernPairs[nkp].c1 = (unsigned char) i;
done++;
break;
}
}
for(i = 0; i < 256; i++)
if (!strcmp(c2, charnames[i].cname)) {
metrics->KernPairs[nkp].c2 = (unsigned char) i;
done++;
break;
}
return (done==2);
}
/* Encode File Parsing. */
/* Statics here are OK, as all the calls are in one initialization
so no concurrency (until threads?) */
typedef struct {
/* Probably can make buf and p0 local variables. Only p needs to be
stored across calls. Need to investigate this more closely. */
char buf[1000];
char *p;
char *p0;
} EncodingInputState;
/* read in the next encoding item, separated by white space. */
static int GetNextItem(FILE *fp, char *dest, int c, EncodingInputState *state)
{
if (c < 0) state->p = NULL;
while (1) {
if (feof(fp)) { state->p = NULL; return 1; }
if (!state->p || *state->p == '\n' || *state->p == '\0') {
state->p = fgets(state->buf, 1000, fp);
}
/* check for incomplete encoding file */
if(!state->p) return 1;
while (isspace((int)* state->p)) state->p++;
if (*state->p == '\0' || *state->p == '%'|| *state->p == '\n') { state->p = NULL; continue; }
state->p0 = state->p;
while (!isspace((int)*state->p)) state->p++;
if (*state->p != '\0') *state->p++ = '\0';
if(c == 45) strcpy(dest, "/minus"); else strcpy(dest, state->p0);
break;
}
return 0;
}
/*
* Convert the encoding file name into a name to be used with iconv()
* in mbcsToSbcs()
*
* FIXME: Doesn't trim path/to/encfile (i.e., doesn't handle
* custom encoding file selected by user).
* Also assumes that encpath has ".enc" suffix supplied
* (not required by R interface)
*/
static int pathcmp(const char *encpath, const char *comparison) {
char pathcopy[PATH_MAX];
char *p1, *p2;
strcpy(pathcopy, encpath);
/*
* Strip path/to/encfile/
*/
p1 = &(pathcopy[0]);
while ((p2 = strchr(p1, FILESEP[0]))) {
p1 = p2 + sizeof(char);
}
/*
* Strip suffix
*/
p2 = (strchr(p1, '.'));
if (p2)
*p2 = '\0';
return strcmp(p1, comparison);
}
static void seticonvName(const char *encpath, char *convname)
{
/*
* Default to "latin1"
*/
char *p;
strcpy(convname, "latin1");
if(pathcmp(encpath, "ISOLatin1")==0)
strcpy(convname, "latin1");
else if(pathcmp(encpath, "ISOLatin2")==0)
strcpy(convname, "latin2");
else if(pathcmp(encpath, "ISOLatin7")==0)
strcpy(convname, "latin7");
else if(pathcmp(encpath, "ISOLatin9")==0)
strcpy(convname, "latin-9");
else if (pathcmp(encpath, "WinAnsi")==0)
strcpy(convname, "CP1252");
else {
/*
* Last resort = trim .enc off encpath to produce convname
*/
strcpy(convname, encpath);
p = strrchr(convname, '.');
if(p) *p = '\0';
}
}
/* Load encoding array from a file: defaults to the R_HOME/library/grDevices/afm directory */
/*
* encpath gives the file to read from
* encname is filled with the encoding name from the file
* encconvname is filled with a "translation" of the encoding name into
* one that can be used with iconv()
* encnames is filled with the character names from the file
* enccode is filled with the raw source of the file
*/
static int
LoadEncoding(const char *encpath, char *encname,
char *encconvname, CNAME *encnames,
char *enccode, Rboolean isPDF)
{
char buf[BUFSIZE];
int i;
FILE *fp;
EncodingInputState state;
state.p = state.p0 = NULL;
seticonvName(encpath, encconvname);
if(strchr(encpath, FILESEP[0])) strcpy(buf, encpath);
else snprintf(buf, BUFSIZE,"%s%slibrary%sgrDevices%senc%s%s",
R_Home, FILESEP, FILESEP, FILESEP, FILESEP, encpath);
#ifdef DEBUG_PS
Rprintf("encoding path is %s\n", buf);
#endif
if (!(fp = R_fopen(R_ExpandFileName(buf), "r"))) {
strcat(buf, ".enc");
if (!(fp = R_fopen(R_ExpandFileName(buf), "r"))) return 0;
}
if (GetNextItem(fp, buf, -1, &state)) { fclose(fp); return 0;} /* encoding name */
strncpy(encname, buf+1, 99);
encname[99] = '\0';
if (!isPDF) snprintf(enccode, 5000, "/%s [\n", encname);
else enccode[0] = '\0';
if (GetNextItem(fp, buf, 0, &state)) { fclose(fp); return 0;} /* [ */
for(i = 0; i < 256; i++) {
if (GetNextItem(fp, buf, i, &state)) { fclose(fp); return 0; }
strncpy(encnames[i].cname, buf+1, 39);
encnames[i].cname[39] = '\0';
strcat(enccode, " /"); strcat(enccode, encnames[i].cname);
if(i%8 == 7) strcat(enccode, "\n");
}
if (GetNextItem(fp, buf, 0, &state)) { fclose(fp); return 0;} /* ] */
fclose(fp);
if (!isPDF) strcat(enccode,"]\n");
return 1;
}
/* Load font metrics from a file: defaults to the
R_HOME/library/grDevices/afm directory */
static int
PostScriptLoadFontMetrics(const char * const fontpath,
FontMetricInfo *metrics,
char *fontname,
CNAME *charnames,
CNAME *encnames,
int reencode)
{
char buf[BUFSIZE], *p, truth[10];
int mode, i = 0, j, ii, nKPX=0;
gzFile fp;
if(strchr(fontpath, FILESEP[0])) strcpy(buf, fontpath);
else
snprintf(buf, BUFSIZE,"%s%slibrary%sgrDevices%safm%s%s.gz",
R_Home, FILESEP, FILESEP, FILESEP, FILESEP, fontpath);
#ifdef DEBUG_PS
Rprintf("afmpath is %s\n", buf);
Rprintf("reencode is %d\n", reencode);
#endif
if (!(fp = R_gzopen(R_ExpandFileName(buf), "rb"))) {
/* try uncompressed version */
snprintf(buf, BUFSIZE,"%s%slibrary%sgrDevices%safm%s%s",
R_Home, FILESEP, FILESEP, FILESEP, FILESEP, fontpath);
if (!(fp = R_gzopen(R_ExpandFileName(buf), "rb"))) {
warning(_("afm file '%s' could not be opened"),
R_ExpandFileName(buf));
return 0;
}
}
metrics->KernPairs = NULL;
metrics->CapHeight = metrics->XHeight = metrics->Descender =
metrics->Ascender = metrics->StemH = metrics->StemV = NA_SHORT;
metrics->IsFixedPitch = -1;
metrics->ItalicAngle = 0;
mode = 0;
for (ii = 0; ii < 256; ii++) {
charnames[ii].cname[0] = '\0';
metrics->CharInfo[ii].WX = NA_SHORT;
for(j = 0; j < 4; j++) metrics->CharInfo[ii].BBox[j] = 0;
}
while (R_gzgets(fp, buf, BUFSIZE)) {
switch(KeyType(buf)) {
case StartFontMetrics:
mode = StartFontMetrics;
break;
case EndFontMetrics:
mode = 0;
break;
case FontBBox:
if (!GetFontBBox(buf, metrics)) {
warning("'FontBBox' could not be parsed");
goto pserror;
}
break;
case C:
if (mode != StartFontMetrics) goto pserror;
if (!GetCharInfo(buf, metrics, charnames, encnames, reencode)) {
warning("'CharInfo' could not be parsed");
goto pserror;
}
break;
case StartKernData:
mode = StartKernData;
break;
case StartKernPairs:
if(mode != StartKernData) goto pserror;
p = SkipToNextItem(buf);
sscanf(p, "%d", &nKPX);
if(nKPX > 0) {
/* nPKX == 0 should not happen, but has */
metrics->KernPairs = (KP *) malloc(nKPX * sizeof(KP));
if (!metrics->KernPairs) goto pserror;
}
break;
case KPX:
if(mode != StartKernData || i >= nKPX) goto pserror;
if (GetKPX(buf, i, metrics, charnames)) i++;
break;
case EndKernData:
mode = 0;
break;
case Unknown:
warning(_("unknown AFM entity encountered"));
break;
case FontName:
p = SkipToNextItem(buf);
sscanf(p, "%[^\n\f\r]", fontname);
break;
case CapHeight:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->CapHeight);
break;
case XHeight:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->XHeight);
break;
case Ascender:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->Ascender);
break;
case Descender:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->Descender);
break;
case StdHW:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->StemH);
break;
case StdVW:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->StemV);
break;
case ItalicAngle:
p = SkipToNextItem(buf);
sscanf(p, "%hd", &metrics->ItalicAngle);
break;
case IsFixedPitch:
p = SkipToNextItem(buf);
sscanf(p, "%[^\n\f\r]", truth);
metrics->IsFixedPitch = strcmp(truth, "true") == 0;
break;
case Empty:
default:
break;
}
}
metrics->nKP = (short) i;
R_gzclose(fp);
/* Make an index for kern-pair searches: relies on having contiguous
blocks by first char for efficiency, but works in all cases. */
{
short ind, tmp;
for (j = 0; j < 256; j++) {
metrics->KPstart[j] = (short) i;
metrics->KPend[j] = 0;
}
for (j = 0; j < i; j++) {
ind = metrics->KernPairs[j].c1;
tmp = metrics->KPstart[ind];
if(j < tmp) metrics->KPstart[ind] = (short) j;
tmp = metrics->KPend[ind];
if(j > tmp) metrics->KPend[ind] = (short) j;
}
}
return 1;
pserror:
R_gzclose(fp);
return 0;
}
#include <rlocale.h> /* for Ri18n_wcwidth */
static double
PostScriptStringWidth(const unsigned char *str, int enc,
FontMetricInfo *metrics,
Rboolean useKerning,
int face, const char *encoding)
{
int sum = 0, i;
short wx;
const unsigned char *p = NULL, *str1 = str;
unsigned char p1, p2;
int status;
if(!metrics && (face % 5) != 0) {
/* This is the CID font case, and should only happen for
non-symbol fonts. So we assume monospaced with multipliers.
We need to remap even if we are in a SBCS, should we get to here */
size_t ucslen;
ucslen = mbcsToUcs2((char *)str, NULL, 0, enc);
if (ucslen != (size_t)-1) {
/* We convert the characters but not the terminator here */
R_CheckStack2(ucslen * sizeof(ucs2_t));
ucs2_t ucs2s[ucslen];
status = (int) mbcsToUcs2((char *)str, ucs2s, (int) ucslen, enc);
if (status >= 0)
for(i = 0 ; i < ucslen ; i++) {
wx = (short)(500 * Ri18n_wcwidth(ucs2s[i]));
/* printf("width for U+%04x is %d\n", ucs2s[i], wx); */
sum += wx;
}
else
warning(_("invalid string in '%s'"), "PostScriptStringWidth");
return 0.001 * sum;
} else {
warning(_("invalid string in '%s'"), "PostScriptStringWidth");
return 0.0;
}
} else
if(!strIsASCII((char *) str) &&
/*
* Every fifth font is a symbol font:
* see postscriptFonts()
*/
(face % 5) != 0) {
R_CheckStack2(strlen((char *)str)+1);
char buff[strlen((char *)str)+1];
/* Output string cannot be longer */
mbcsToSbcs((char *)str, buff, encoding, enc);
str1 = (unsigned char *)buff;
}
/* safety */
if(!metrics) return 0.0;
/* Now we know we have an 8-bit encoded string in the encoding to
be used for output. */
for (p = str1; *p; p++) {
#ifdef USE_HYPHEN
if (*p == '-' && !isdigit(p[1]))
wx = metrics->CharInfo[(int)PS_hyphen].WX;
else
#endif
wx = metrics->CharInfo[*p].WX;
if(wx == NA_SHORT)
warning(_("font width unknown for character 0x%x"), *p);
else sum += wx;
if(useKerning) {
/* check for kerning adjustment */
p1 = p[0]; p2 = p[1];
for (i = metrics->KPstart[p1]; i < metrics->KPend[p1]; i++)
/* second test is a safety check: should all start with p1 */
if(metrics->KernPairs[i].c2 == p2 &&
metrics->KernPairs[i].c1 == p1) {
sum += metrics->KernPairs[i].kern;
break;
}
}
}
return 0.001 * sum;
}
/* Be careful about the assumptions here. In an 8-bit locale 0 <= c < 256
and it is in the encoding in use. As it is not going to be
re-encoded when text is output, it is correct not to re-encode here.
When called in an MBCS locale and font != 5, chars < 128 are sent
as is (we assume that is ASCII) and others are re-encoded to
Unicode in GEText (and interpreted as Unicode in GESymbol).
*/
# ifdef WORDS_BIGENDIAN
static const char UCS2ENC[] = "UCS-2BE";
# else
static const char UCS2ENC[] = "UCS-2LE";
# endif
static void
PostScriptMetricInfo(int c, double *ascent, double *descent, double *width,
FontMetricInfo *metrics,
Rboolean isSymbol,
const char *encoding)
{
Rboolean Unicode = mbcslocale;
if (c == 0) {
*ascent = 0.001 * metrics->FontBBox[3];
*descent = -0.001 * metrics->FontBBox[1];
*width = 0.001 * (metrics->FontBBox[2] - metrics->FontBBox[0]);
return;
}
if (c < 0) { Unicode = TRUE; c = -c; }
/* We don't need the restriction to 65536 here any more as we could
convert from UCS4ENC, but there are few language chars above 65536. */
if(Unicode && !isSymbol && c >= 128 && c < 65536) { /* Unicode */
void *cd = NULL;
const char *i_buf; char *o_buf, out[2];
size_t i_len, o_len, status;
unsigned short w[2];
if ((void*)-1 == (cd = Riconv_open(encoding, UCS2ENC)))
error(_("unknown encoding '%s' in 'PostScriptMetricInfo'"),
encoding);
/* Here we use terminated strings, but could use one char */
w[0] = (unsigned short) c; w[1] = 0;
i_buf = (char *)w;
i_len = 4;
o_buf = out;
o_len = 2;
status = Riconv(cd, &i_buf, (size_t *)&i_len,
(char **)&o_buf, (size_t *)&o_len);
Riconv_close(cd);
if (status == (size_t)-1) {
*ascent = 0;
*descent = 0;
*width = 0;
warning(_("font metrics unknown for Unicode character U+%04x"), c);
return;
} else {
c = out[0] & 0xff;
}
}
if (c > 255) { /* Unicode */
*ascent = 0;
*descent = 0;
*width = 0;
warning(_("font metrics unknown for Unicode character U+%04x"), c);
} else {
short wx;
*ascent = 0.001 * metrics->CharInfo[c].BBox[3];
*descent = -0.001 * metrics->CharInfo[c].BBox[1];
wx = metrics->CharInfo[c].WX;
if(wx == NA_SHORT) {
warning(_("font metrics unknown for character 0x%x"), c);
wx = 0;
}
*width = 0.001 * wx;
}
}
static void
PostScriptCIDMetricInfo(int c, double *ascent, double *descent, double *width)
{
/* calling in a SBCS is probably not intentional, but we should try to
cope sensibly. */
if(!mbcslocale && c > 0) {
if (c > 255)
error(_("invalid character (%04x) sent to 'PostScriptCIDMetricInfo' in a single-byte locale"),
c);
else {
/* convert to UCS-2 to use wcwidth. */
char str[2]={0,0};
ucs2_t out;
str[0] = (char) c;
if(mbcsToUcs2(str, &out, 1, CE_NATIVE) == (size_t)-1)
error(_("invalid character sent to 'PostScriptCIDMetricInfo' in a single-byte locale"));
c = out;
}
}
/* Design values for all CJK fonts */
*ascent = 0.880;
*descent = -0.120;
if (c == 0 || c > 65535) *width = 1.; else *width = 0.5*Ri18n_wcwidth(c);
}
/*******************************************************
* Data structures and functions for loading Type 1 fonts into an R session.
*
* Used by PostScript, XFig and PDF drivers.
*
* The idea is that font information is only loaded once for each font
* within an R session. Also, each encoding is only loaded once per
* session. A global list of loaded fonts and a global list of
* loaded encodings are maintained. Devices maintain their own list
* of fonts and encodings used on the device; the elements of these
* lists are just pointers to the elements of the global lists.
*
* Cleaning up device lists just involves free'ing the lists themselves.
* When the R session closes, the actual font and encoding information
* is unloaded using the global lists.
*/
/*
* Information about one Type 1 font
*/
typedef struct CIDFontInfo {
char name[50];
} CIDFontInfo, *cidfontinfo;
typedef struct T1FontInfo {
char name[50];
FontMetricInfo metrics;
CNAME charnames[256];
} Type1FontInfo, *type1fontinfo;
/*
* Information about a font encoding
*/
typedef struct EncInfo {
char encpath[PATH_MAX];
char name[100]; /* Name written to PostScript/PDF file */
char convname[50]; /* Name used in mbcsToSbcs() with iconv() */
CNAME encnames[256];
char enccode[5000];
} EncodingInfo, *encodinginfo;
/*
* Information about a font family
* (5 fonts representing plain, bold, italic, bolditalic, and symbol)
*
* The name is a graphics engine font family name
* (distinct from the Type 1 font name)
*/
typedef struct CIDFontFamily {
char fxname[50];
cidfontinfo cidfonts[4];
type1fontinfo symfont;
char cmap[50];
char encoding[50];
} CIDFontFamily, *cidfontfamily;
typedef struct T1FontFamily {
char fxname[50];
type1fontinfo fonts[5];
encodinginfo encoding;
} Type1FontFamily, *type1fontfamily;
/*
* A list of Type 1 font families
*
* Used to keep track of fonts currently loaded in the session
* AND by each device to keep track of fonts currently used on the device.
*/
typedef struct CIDFontList {
cidfontfamily cidfamily;
struct CIDFontList *next;
} CIDFontList, *cidfontlist;
typedef struct T1FontList {
type1fontfamily family;
struct T1FontList *next;
} Type1FontList, *type1fontlist;
/*
* Same as type 1 font list, but for encodings.
*/
typedef struct EncList {
encodinginfo encoding;
struct EncList *next;
} EncodingList, *encodinglist;
/*
* Various constructors and destructors
*/
static cidfontinfo makeCIDFont()
{
cidfontinfo font = (CIDFontInfo *) malloc(sizeof(CIDFontInfo));
if (!font)
warning(_("failed to allocate CID font info"));
return font;
}
static type1fontinfo makeType1Font()
{
type1fontinfo font = (Type1FontInfo *) malloc(sizeof(Type1FontInfo));
if (font) {
/*
* Initialise font->metrics.KernPairs to NULL
* so that we know NOT to free it if we fail to
* load this font and have to
* bail out and free this type1fontinfo
*/
font->metrics.KernPairs = NULL;
} else
warning(_("failed to allocate Type 1 font info"));
return font;
}
static void freeCIDFont(cidfontinfo font)
{
free(font);
}
static void freeType1Font(type1fontinfo font)
{
if (font->metrics.KernPairs)
free(font->metrics.KernPairs);
free(font);
}
static encodinginfo makeEncoding()
{
encodinginfo encoding = (EncodingInfo *) malloc(sizeof(EncodingInfo));
if (!encoding)
warning(_("failed to allocate encoding info"));
return encoding;
}
static void freeEncoding(encodinginfo encoding)
{
free(encoding);
}
static cidfontfamily makeCIDFontFamily()
{
cidfontfamily family = (CIDFontFamily *) malloc(sizeof(CIDFontFamily));
if (family) {
int i;
for (i = 0; i < 4; i++)
family->cidfonts[i] = NULL;
family->symfont = NULL;
} else
warning(_("failed to allocate CID font family"));
return family;
}
static type1fontfamily makeFontFamily()
{
type1fontfamily family = (Type1FontFamily *) malloc(sizeof(Type1FontFamily));
if (family) {
int i;
for (i = 0; i < 5; i++)
family->fonts[i] = NULL;
family->encoding = NULL;
} else
warning(_("failed to allocate Type 1 font family"));
return family;
}
/*
* Frees a font family, including fonts, but NOT encoding
*
* Used by global font list to free all fonts loaded in session
* (should not be used by devices; else may free fonts more than once)
*
* Encodings are freed using the global encoding list
* (to ensure that each encoding is only freed once)
*/
static void freeCIDFontFamily(cidfontfamily family)
{
int i;
for (i = 0; i < 4; i++)
if (family->cidfonts[i])
freeCIDFont(family->cidfonts[i]);
if (family->symfont)
freeType1Font(family->symfont);
free(family);
}
static void freeFontFamily(type1fontfamily family)
{
int i;
for (i=0; i<5; i++)
if (family->fonts[i])
freeType1Font(family->fonts[i]);
free(family);
}
static cidfontlist makeCIDFontList()
{
cidfontlist fontlist = (CIDFontList *) malloc(sizeof(CIDFontList));
if (fontlist) {
fontlist->cidfamily = NULL;
fontlist->next = NULL;
} else
warning(_("failed to allocate font list"));
return fontlist;
}
static type1fontlist makeFontList()
{
type1fontlist fontlist = (Type1FontList *) malloc(sizeof(Type1FontList));
if (fontlist) {
fontlist->family = NULL;
fontlist->next = NULL;
} else
warning(_("failed to allocate font list"));
return fontlist;
}
/*
* Just free the Type1FontList structure, do NOT free elements it points to
*
* Used by both global font list and devices to free the font lists
* (global font list separately takes care of the fonts pointed to)
*/
static void freeCIDFontList(cidfontlist fontlist) {
/*
* These will help to find any errors if attempt to
* use freed font list.
*/
fontlist->cidfamily = NULL;
fontlist->next = NULL;
free(fontlist);
}
static void freeFontList(type1fontlist fontlist) {
/*
* These will help to find any errors if attempt to
* use freed font list.
*/
fontlist->family = NULL;
fontlist->next = NULL;
free(fontlist);
}
static void freeDeviceCIDFontList(cidfontlist fontlist) {
if (fontlist) {
if (fontlist->next)
freeDeviceCIDFontList(fontlist->next);
freeCIDFontList(fontlist);
}
}
static void freeDeviceFontList(type1fontlist fontlist) {
if (fontlist) {
if (fontlist->next)
freeDeviceFontList(fontlist->next);
freeFontList(fontlist);
}
}
static encodinglist makeEncList()
{
encodinglist enclist = (EncodingList *) malloc(sizeof(EncodingList));
if (enclist) {
enclist->encoding = NULL;
enclist->next = NULL;
} else
warning(_("failed to allocated encoding list"));
return enclist;
}
static void freeEncList(encodinglist enclist)
{
enclist->encoding = NULL;
enclist->next = NULL;
free(enclist);
}
static void freeDeviceEncList(encodinglist enclist) {
if (enclist) {
if (enclist->next)
freeDeviceEncList(enclist->next);
freeEncList(enclist);
}
}
/*
* Global list of fonts and encodings that have been loaded this session
*/
static cidfontlist loadedCIDFonts = NULL;
static type1fontlist loadedFonts = NULL;
static encodinglist loadedEncodings = NULL;
/*
* There are separate PostScript and PDF font databases at R level
* so MUST have separate C level records too
* (because SAME device-independent font family name could map
* to DIFFERENT font for PostScript and PDF)
*/
static cidfontlist PDFloadedCIDFonts = NULL;
static type1fontlist PDFloadedFonts = NULL;
static encodinglist PDFloadedEncodings = NULL;
/*
* Names of R level font databases
*/
static char PostScriptFonts[] = ".PostScript.Fonts";
static char PDFFonts[] = ".PDF.Fonts";
/*
* Free the above globals
*
* NOTE that freeing the font families does NOT free the encodings
* Hence we free all encodings first.
*/
/* NB this is exported, and was at some point used by KillAllDevices
in src/main/graphics.c. That would be a problem now it is in a
separate DLL.
*/
#if 0
void freeType1Fonts()
{
encodinglist enclist = loadedEncodings;
type1fontlist fl = loadedFonts;
cidfontlist cidfl = loadedCIDFonts;
type1fontlist pdffl = PDFloadedFonts;
cidfontlist pdfcidfl = PDFloadedCIDFonts;
while (enclist) {
enclist = enclist->next;
freeEncoding(loadedEncodings->encoding);
freeEncList(loadedEncodings);
loadedEncodings = enclist;
}
while (fl) {
fl = fl->next;
freeFontFamily(loadedFonts->family);
freeFontList(loadedFonts);
loadedFonts = fl;
}
while (cidfl) {
cidfl = cidfl->next;
freeCIDFontFamily(loadedCIDFonts->cidfamily);
freeCIDFontList(loadedCIDFonts);
loadedCIDFonts = cidfl;
}
while (pdffl) {
pdffl = pdffl->next;
freeFontFamily(PDFloadedFonts->family);
freeFontList(PDFloadedFonts);
PDFloadedFonts = pdffl;
}
while (pdfcidfl) {
pdfcidfl = pdfcidfl->next;
freeCIDFontFamily(PDFloadedCIDFonts->cidfamily);
freeCIDFontList(PDFloadedCIDFonts);
PDFloadedCIDFonts = pdfcidfl;
}
}
#endif
/*
* Given a path to an encoding file,
* find an EncodingInfo that corresponds
*/
static encodinginfo
findEncoding(const char *encpath, encodinglist deviceEncodings, Rboolean isPDF)
{
encodinglist enclist = isPDF ? PDFloadedEncodings : loadedEncodings;
encodinginfo encoding = NULL;
int found = 0;
/*
* "default" is a special encoding which means use the
* default (FIRST) encoding set up ON THIS DEVICE.
*/
if (!strcmp(encpath, "default")) {
found = 1;
encoding = deviceEncodings->encoding;
} else {
while (enclist && !found) {
found = !strcmp(encpath, enclist->encoding->encpath);
if (found)
encoding = enclist->encoding;
enclist = enclist->next;
}
}
return encoding;
}
/*
* Find an encoding in device encoding list
*/
static encodinginfo
findDeviceEncoding(const char *encpath, encodinglist enclist, int *index)
{
encodinginfo encoding = NULL;
int found = 0;
*index = 0;
while (enclist && !found) {
found = !strcmp(encpath, enclist->encoding->encpath);
if (found)
encoding = enclist->encoding;
enclist = enclist->next;
*index = *index + 1;
}
return encoding;
}
/*
* Utility to avoid string overrun
*/
static void safestrcpy(char *dest, const char *src, int maxlen)
{
if (strlen(src) < maxlen)
strcpy(dest, src);
else {
warning(_("truncated string which was too long for copy"));
strncpy(dest, src, maxlen-1);
dest[maxlen-1] = '\0';
}
}
/*
* Add an encoding to the list of loaded encodings ...
*
* ... and return the new encoding
*/
static encodinginfo addEncoding(const char *encpath, Rboolean isPDF)
{
encodinginfo encoding = makeEncoding();
if (encoding) {
if (LoadEncoding(encpath,
encoding->name,
encoding->convname,
encoding->encnames,
encoding->enccode,
isPDF)) {
encodinglist newenc = makeEncList();
if (!newenc) {
freeEncoding(encoding);
encoding = NULL;
} else {
encodinglist enclist =
isPDF ? PDFloadedEncodings : loadedEncodings;
safestrcpy(encoding->encpath, encpath, PATH_MAX);
newenc->encoding = encoding;
if (!enclist) {
if(isPDF) PDFloadedEncodings = newenc;
else loadedEncodings = newenc;
} else {
while (enclist->next)
enclist = enclist->next;
enclist->next = newenc;
}
}
} else {
warning(_("failed to load encoding file '%s'"), encpath);
freeEncoding(encoding);
encoding = NULL;
}
} else
encoding = NULL;
return encoding;
}
/*
* Add an encoding to a list of device encodings ...
*
* ... and return the new list
*/
static encodinglist addDeviceEncoding(encodinginfo encoding,
encodinglist devEncs)
{
encodinglist newenc = makeEncList();
if (!newenc) {
devEncs = NULL;
} else {
encodinglist enclist = devEncs;
newenc->encoding = encoding;
if (!devEncs)
devEncs = newenc;
else {
while (enclist->next)
enclist = enclist->next;
enclist->next = newenc;
}
}
return devEncs;
}
/*
* Given a graphics engine font family name,
* find a Type1FontFamily that corresponds
*
* If get fxname match, check whether the encoding in the
* R database is "default"
* (i.e., the graphics engine font family encoding is unspecified)
* If it is "default" then check that the loaded encoding is the
* same as the encoding we want. A matching encoding is defined
* as one which leads to the same iconvname (see seticonvName()).
* This could perhaps be made more rigorous by actually looking inside
* the relevant encoding file for the encoding name.
*
* If the encoding we want is NULL, then we just don't care.
*
* Returns NULL if can't find font in loadedFonts
*/
static const char *getFontEncoding(const char *family, const char *fontdbname);
static type1fontfamily
findLoadedFont(const char *name, const char *encoding, Rboolean isPDF)
{
type1fontlist fontlist;
type1fontfamily font = NULL;
char *fontdbname;
int found = 0;
if (isPDF) {
fontlist = PDFloadedFonts;
fontdbname = PDFFonts;
} else {
fontlist = loadedFonts;
fontdbname = PostScriptFonts;
}
while (fontlist && !found) {
found = !strcmp(name, fontlist->family->fxname);
if (found) {
font = fontlist->family;
if (encoding) {
char encconvname[50];
const char *encname = getFontEncoding(name, fontdbname);
seticonvName(encoding, encconvname);
if (!strcmp(encname, "default") &&
strcmp(fontlist->family->encoding->convname,
encconvname)) {
font = NULL;
found = 0;
}
}
}
fontlist = fontlist->next;
}
return font;
}
SEXP Type1FontInUse(SEXP name, SEXP isPDF)
{
if (!isString(name) || LENGTH(name) > 1)
error(_("invalid font name or more than one font name"));
return ScalarLogical(
findLoadedFont(CHAR(STRING_ELT(name, 0)), NULL, asLogical(isPDF))
!= NULL);
}
static cidfontfamily findLoadedCIDFont(const char *family, Rboolean isPDF)
{
cidfontlist fontlist;
cidfontfamily font = NULL;
int found = 0;
if (isPDF) {
fontlist = PDFloadedCIDFonts;
} else {
fontlist = loadedCIDFonts;
}
while (fontlist && !found) {
found = !strcmp(family, fontlist->cidfamily->cidfonts[0]->name);
if (found)
font = fontlist->cidfamily;
fontlist = fontlist->next;
}
#ifdef PS_DEBUG
if(found)
Rprintf("findLoadedCIDFont found = %s\n",family);
#endif
return font;
}
SEXP CIDFontInUse(SEXP name, SEXP isPDF)
{
if (!isString(name) || LENGTH(name) > 1)
error(_("invalid font name or more than one font name"));
return ScalarLogical(
findLoadedCIDFont(CHAR(STRING_ELT(name, 0)), asLogical(isPDF))
!= NULL);
}
/*
* Find a font in device font list
*/
static cidfontfamily
findDeviceCIDFont(const char *name, cidfontlist fontlist, int *index)
{
cidfontfamily font = NULL;
int found = 0;
*index = 0;
/*
* If the graphics engine font family is ""
* just use the default font that was loaded when the device
* was created.
* This will (MUST) be the first font in the device
*/
#ifdef DEBUG_PS
Rprintf("findDeviceCIDFont=%s\n", name);
Rprintf("? cidfontlist %s\n", (fontlist) ? "found" : "not found");
#endif
if (strlen(name) > 0) {
while (fontlist && !found) {
#ifdef DEBUG_PS
Rprintf("findDeviceCIDFont=%s\n", name);
Rprintf("findDeviceCIDFont fontlist->cidfamily->name=%s\n",
fontlist->cidfamily->fxname);
#endif
found = !strcmp(name, fontlist->cidfamily->fxname);
if (found)
font = fontlist->cidfamily;
fontlist = fontlist->next;
*index = *index + 1;
}
} else {
font = fontlist->cidfamily;
*index = 1;
}
#ifdef DEBUG_PS
Rprintf("findDeviceCIDFont find index=%d\n", *index);
Rprintf("findDeviceCIDFont find font=%s\n", (font) ? "Found" : "NULL");
#endif
return font;
}
/*
* Must only be called once a device has at least one font added
* (i.e., after the default font has been added)
*/
static type1fontfamily
findDeviceFont(const char *name, type1fontlist fontlist, int *index)
{
type1fontfamily font = NULL;
int found = 0;
*index = 0;
/*
* If the graphics engine font family is ""
* just use the default font that was loaded when the device
* was created.
* This will (MUST) be the first font in the device
*/
if (strlen(name) > 0) {
while (fontlist && !found) {
found = !strcmp(name, fontlist->family->fxname);
if (found)
font = fontlist->family;
fontlist = fontlist->next;
*index = *index + 1;
}
} else {
font = fontlist->family;
*index = 1;
}
return font;
}
/*
* Get an R-level font database
*/
static SEXP getFontDB(const char *fontdbname) {
SEXP graphicsNS, PSenv;
SEXP fontdb;
PROTECT(graphicsNS = R_FindNamespace(ScalarString(mkChar("grDevices"))));
PROTECT(PSenv = findVar(install(".PSenv"), graphicsNS));
/* under lazy loading this will be a promise on first use */
if(TYPEOF(PSenv) == PROMSXP) {
PROTECT(PSenv);
PSenv = eval(PSenv, graphicsNS);
UNPROTECT(2);
PROTECT(PSenv);
}
PROTECT(fontdb = findVar(install(fontdbname), PSenv));
UNPROTECT(3);
return fontdb;
}
/*
* Get an R-level font object
*/
static SEXP getFont(const char *family, const char *fontdbname) {
int i, nfonts;
SEXP result = R_NilValue;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(fontdbname));
SEXP fontnames;
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i=0; i<nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
result = VECTOR_ELT(fontdb, i);
}
}
if (!found)
warning(_("font family '%s' not found in PostScript font database"),
family);
UNPROTECT(2);
return result;
}
/*
* Get the path to the afm file for a user-specifed font
* given a graphics engine font family and the face
* index (0..4)
*
* Do this by looking up the font name in the PostScript
* font database
*/
static const char*
fontMetricsFileName(const char *family, int faceIndex,
const char *fontdbname)
{
int i, nfonts;
const char *result = NULL;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(fontdbname));
SEXP fontnames;
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i = 0; i < nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
/* 1 means vector of font afm file paths */
result = CHAR(STRING_ELT(VECTOR_ELT(VECTOR_ELT(fontdb, i), 1),
faceIndex));
}
}
if (!found)
warning(_("font family '%s' not found in PostScript font database"),
family);
UNPROTECT(2);
return result;
}
static const char *getFontType(const char *family, const char *fontdbname)
{
const char *result = NULL;
SEXP font = getFont(family, fontdbname);
if (!isNull(font)) {
result = CHAR(STRING_ELT(getAttrib(font, R_ClassSymbol), 0));
}
return result;
}
static Rboolean isType1Font(const char *family, const char *fontdbname,
type1fontfamily defaultFont)
{
/*
* If family is "" then we're referring to the default device
* font, so the test is just whether the default font is
* type1
*
* If loading font, send NULL for defaultFont
*/
if (strlen(family) == 0) {
if (defaultFont)
return TRUE;
else
return FALSE;
} else {
const char *fontType = getFontType(family, fontdbname);
if (fontType)
return !strcmp(fontType, "Type1Font");
else
return FALSE;
}
}
static Rboolean isCIDFont(const char *family, const char *fontdbname,
cidfontfamily defaultCIDFont) {
/*
* If family is "" then we're referring to the default device
* font, so the test is just whether the default font is
* type1
*
* If loading font, send NULL for defaultCIDFont
*/
if (strlen(family) == 0) {
if (defaultCIDFont)
return TRUE;
else
return FALSE;
} else {
const char *fontType = getFontType(family, fontdbname);
if (fontType)
return !strcmp(fontType, "CIDFont");
else
return FALSE;
}
}
/*
* Get encoding name from font database
*/
static const char *getFontEncoding(const char *family, const char *fontdbname)
{
SEXP fontnames;
int i, nfonts;
const char *result = NULL;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(fontdbname));
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i=0; i<nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
/* 2 means 'encoding' element */
result = CHAR(STRING_ELT(VECTOR_ELT(VECTOR_ELT(fontdb, i), 2), 0));
}
}
if (!found)
warning(_("font encoding for family '%s' not found in font database"),
family);
UNPROTECT(2);
return result;
}
/*
* Get Font name from font database
*/
static const char *getFontName(const char *family, const char *fontdbname)
{
SEXP fontnames;
int i, nfonts;
const char *result = NULL;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(fontdbname));
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i=0; i<nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
/* 0 means 'family' element */
result = CHAR(STRING_ELT(VECTOR_ELT(VECTOR_ELT(fontdb, i), 0), 0));
}
}
if (!found)
warning(_("font CMap for family '%s' not found in font database"),
family);
UNPROTECT(2);
return result;
}
/*
* Get CMap name from font database
*/
static const char *getFontCMap(const char *family, const char *fontdbname)
{
SEXP fontnames;
int i, nfonts;
const char *result = NULL;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(fontdbname));
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i=0; i<nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
/* 2 means 'cmap' element */
result = CHAR(STRING_ELT(VECTOR_ELT(VECTOR_ELT(fontdb, i), 2), 0));
}
}
if (!found)
warning(_("font CMap for family '%s' not found in font database"),
family);
UNPROTECT(2);
return result;
}
/*
* Get Encoding name from CID font in font database
*/
static const char *
getCIDFontEncoding(const char *family, const char *fontdbname)
{
SEXP fontnames;
int i, nfonts;
const char *result = NULL;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(fontdbname));
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i=0; i<nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
/* 3 means 'encoding' element */
result = CHAR(STRING_ELT(VECTOR_ELT(VECTOR_ELT(fontdb, i), 3), 0));
}
}
if (!found)
warning(_("font encoding for family '%s' not found in font database"),
family);
UNPROTECT(2);
return result;
}
/*
* Get Encoding name from CID font in font database
*/
static const char *getCIDFontPDFResource(const char *family)
{
SEXP fontnames;
int i, nfonts;
const char *result = NULL;
int found = 0;
SEXP fontdb = PROTECT(getFontDB(PDFFonts));
PROTECT(fontnames = getAttrib(fontdb, R_NamesSymbol));
nfonts = LENGTH(fontdb);
for (i=0; i<nfonts && !found; i++) {
const char *fontFamily = CHAR(STRING_ELT(fontnames, i));
if (strcmp(family, fontFamily) == 0) {
found = 1;
/* 4 means 'pdfresource' element */
result = CHAR(STRING_ELT(VECTOR_ELT(VECTOR_ELT(fontdb, i), 4), 0));
}
}
if (!found)
warning(_("font encoding for family '%s' not found in font database"),
family);
UNPROTECT(2);
return result;
}
/*
* Add a graphics engine font family/encoding to the list of loaded fonts ...
*
* ... and return the new font
*/
static cidfontfamily addLoadedCIDFont(cidfontfamily font, Rboolean isPDF)
{
cidfontlist newfont = makeCIDFontList();
if (!newfont) {
freeCIDFontFamily(font);
font = NULL;
} else {
cidfontlist fontlist;
if (isPDF)
fontlist = PDFloadedCIDFonts;
else
fontlist = loadedCIDFonts;
newfont->cidfamily = font;
if (!fontlist) {
if (isPDF)
PDFloadedCIDFonts = newfont;
else
loadedCIDFonts = newfont;
} else {
while (fontlist->next)
fontlist = fontlist->next;
fontlist->next = newfont;
}
}
return font;
}
static type1fontfamily addLoadedFont(type1fontfamily font,
Rboolean isPDF)
{
type1fontlist newfont = makeFontList();
if (!newfont) {
freeFontFamily(font);
font = NULL;
} else {
type1fontlist fontlist;
if (isPDF)
fontlist = PDFloadedFonts;
else
fontlist = loadedFonts;
newfont->family = font;
if (!fontlist) {
if (isPDF)
PDFloadedFonts = newfont;
else
loadedFonts = newfont;
} else {
while (fontlist->next)
fontlist = fontlist->next;
fontlist->next = newfont;
}
}
return font;
}
/*
* Add a font from a graphics engine font family name
*/
static cidfontfamily addCIDFont(const char *name, Rboolean isPDF)
{
cidfontfamily fontfamily = makeCIDFontFamily();
char *fontdbname;
if (isPDF)
fontdbname = PDFFonts;
else
fontdbname = PostScriptFonts;
if (fontfamily) {
int i;
const char *cmap = getFontCMap(name, fontdbname);
if (!cmap) {
freeCIDFontFamily(fontfamily);
fontfamily = NULL;
} else {
/*
* Set the name of the font
*/
safestrcpy(fontfamily->fxname, name, 50);
/*
* Get the font CMap
*/
safestrcpy(fontfamily->cmap, cmap, 50);
/*
* Get the font Encoding (name)
*
* If we have got here then we know there is a
* match in the font database because we already
* have the CMap => don't need to check for failure
*/
safestrcpy(fontfamily->encoding,
getCIDFontEncoding(name, fontdbname), 50);
/*
* Load font info
*/
for(i = 0; i < 4; i++) {
fontfamily->cidfonts[i] = makeCIDFont();
/*
* Use name from R object font database.
*/
safestrcpy(fontfamily->cidfonts[i]->name,
getFontName(name, fontdbname), 50);
}
/*
* Load the (Type 1!) symbol font
*
* Gratuitous loop of length 1 so "break" jumps to end of loop
*/
for (i = 0; i < 1; i++) {
type1fontinfo font = makeType1Font();
const char *afmpath = fontMetricsFileName(name, 4, fontdbname);
if (!font) {
freeCIDFontFamily(fontfamily);
fontfamily = NULL;
break;
}
if (!afmpath) {
freeCIDFontFamily(fontfamily);
fontfamily = NULL;
freeType1Font(font);
break;
}
fontfamily->symfont = font;
if (!PostScriptLoadFontMetrics(afmpath,
&(fontfamily->symfont->metrics),
fontfamily->symfont->name,
fontfamily->symfont->charnames,
/*
* Reencode all but
* symbol face
*/
NULL, 0)) {
warning(_("cannot load afm file '%s'"), afmpath);
freeCIDFontFamily(fontfamily);
fontfamily = NULL;
break;
}
}
/*
* Add font
*/
if (fontfamily)
fontfamily = addLoadedCIDFont(fontfamily, isPDF);
}
} else
fontfamily = NULL;
#ifdef DEBUG_PS
Rprintf("%d fontfamily = %s\n", __LINE__, (fontfamily) ? "set" : "null");
Rprintf("%d addCIDFont = %s\n", __LINE__, fontfamily->fxname);
#endif
return fontfamily;
}
static type1fontfamily addFont(const char *name, Rboolean isPDF,
encodinglist deviceEncodings)
{
type1fontfamily fontfamily = makeFontFamily();
char *fontdbname;
if (isPDF)
fontdbname = PDFFonts;
else
fontdbname = PostScriptFonts;
if (fontfamily) {
int i;
encodinginfo encoding;
const char *encpath = getFontEncoding(name, fontdbname);
if (!encpath) {
freeFontFamily(fontfamily);
fontfamily = NULL;
} else {
/*
* Set the name of the font
*/
safestrcpy(fontfamily->fxname, name, 50);
/*
* Find or add encoding
*/
if (!(encoding = findEncoding(encpath, deviceEncodings, isPDF)))
encoding = addEncoding(encpath, isPDF);
if (!encoding) {
freeFontFamily(fontfamily);
fontfamily = NULL;
} else {
/*
* Load font info
*/
fontfamily->encoding = encoding;
for(i = 0; i < 5 ; i++) {
type1fontinfo font = makeType1Font();
const char *afmpath = fontMetricsFileName(name, i, fontdbname);
if (!font) {
freeFontFamily(fontfamily);
fontfamily = NULL;
break;
}
if (!afmpath) {
freeFontFamily(fontfamily);
fontfamily = NULL;
freeType1Font(font);
break;
}
fontfamily->fonts[i] = font;
if (!PostScriptLoadFontMetrics(afmpath,
&(fontfamily->fonts[i]->metrics),
fontfamily->fonts[i]->name,
fontfamily->fonts[i]->charnames,
/*
* Reencode all but
* symbol face
*/
encoding->encnames,
(i < 4)?1:0)) {
warning(_("cannot load afm file '%s'"), afmpath);
freeFontFamily(fontfamily);
fontfamily = NULL;
break;
}
}
/*
* Add font
*/
if (fontfamily)
fontfamily = addLoadedFont(fontfamily, isPDF);
}
}
} else
fontfamily = NULL;
return fontfamily;
}
/*
* Add a default font family/encoding to the list of loaded fonts ...
*
* ... using a set of AFM paths ...
*
* ... and return the new font
*/
static type1fontfamily
addDefaultFontFromAFMs(const char *encpath, const char **afmpaths,
Rboolean isPDF,
encodinglist deviceEncodings)
{
encodinginfo encoding;
type1fontfamily fontfamily = makeFontFamily();
if (fontfamily) {
int i;
if (!(encoding = findEncoding(encpath, deviceEncodings, isPDF)))
encoding = addEncoding(encpath, isPDF);
if (!encoding) {
freeFontFamily(fontfamily);
fontfamily = NULL;
} else {
/*
* This is the device default font, so set the
* graphics engine font family name to ""
*/
fontfamily->fxname[0] ='\0';
/*
* Load font info
*/
fontfamily->encoding = encoding;
for(i = 0; i < 5 ; i++) {
type1fontinfo font = makeType1Font();
if (!font) {
freeFontFamily(fontfamily);
fontfamily = NULL;
break;
}
fontfamily->fonts[i] = font;
if (!PostScriptLoadFontMetrics(afmpaths[i],
&(fontfamily->fonts[i]->metrics),
fontfamily->fonts[i]->name,
fontfamily->fonts[i]->charnames,
/*
* Reencode all but
* symbol face
*/
encoding->encnames,
(i < 4)?1:0)) {
warning(_("cannot load afm file '%s'"), afmpaths[i]);
freeFontFamily(fontfamily);
fontfamily = NULL;
break;
}
}
/*
* Add font
*/
if (fontfamily)
fontfamily = addLoadedFont(fontfamily, isPDF);
}
} else
fontfamily = NULL;
return fontfamily;
}
/*
* Add a graphics engine font family/encoding to a list of device fonts ...
*
* ... and return the new font list
*/
static cidfontlist addDeviceCIDFont(cidfontfamily font,
cidfontlist devFonts,
int *index)
{
cidfontlist newfont = makeCIDFontList();
*index = 0;
if (!newfont) {
devFonts = NULL;
} else {
cidfontlist fontlist = devFonts;
newfont->cidfamily = font;
*index = 1;
if (!devFonts) {
devFonts = newfont;
} else {
while (fontlist->next) {
fontlist = fontlist->next;
*index = *index + 1;
}
fontlist->next = newfont;
}
}
return devFonts;
}
static type1fontlist addDeviceFont(type1fontfamily font,
type1fontlist devFonts,
int *index)
{
type1fontlist newfont = makeFontList();
*index = 0;
if (!newfont) {
devFonts = NULL;
} else {
type1fontlist fontlist = devFonts;
newfont->family = font;
*index = 1;
if (!devFonts) {
devFonts = newfont;
} else {
while (fontlist->next) {
fontlist = fontlist->next;
*index = *index + 1;
}
fontlist->next = newfont;
}
}
return devFonts;
}
/*
***********************************************************
*/
/* Part 2. Device Driver State. */
typedef struct {
char filename[PATH_MAX];
int open_type;
char papername[64]; /* paper name */
int paperwidth; /* paper width in big points (1/72 in) */
int paperheight; /* paper height in big points */
Rboolean landscape; /* landscape mode */
int pageno; /* page number */
int fileno; /* file number */
int maxpointsize;
double width; /* plot width in inches */
double height; /* plot height in inches */
double pagewidth; /* page width in inches */
double pageheight; /* page height in inches */
Rboolean pagecentre;/* centre image on page? */
Rboolean printit; /* print page at close? */
char command[2*PATH_MAX];
char title[1024];
char colormodel[30];
FILE *psfp; /* output file */
Rboolean onefile; /* EPSF header etc*/
Rboolean paperspecial; /* suppress %%Orientation */
Rboolean warn_trans; /* have we warned about translucent cols? */
Rboolean useKern;
Rboolean fillOddEven; /* polygon fill mode */
/* This group of variables track the current device status.
* They should only be set by routines that emit PostScript code. */
struct {
double lwd; /* line width */
int lty; /* line type */
R_GE_lineend lend;
R_GE_linejoin ljoin;
double lmitre;
int font;
int cidfont;
int fontsize; /* font size in points */
rcolor col; /* color */
rcolor fill; /* fill color */
} current;
/*
* Fonts and encodings used on the device
*/
type1fontlist fonts;
cidfontlist cidfonts;
encodinglist encodings;
/*
* These next two just record the default device font
*/
type1fontfamily defaultFont;
cidfontfamily defaultCIDFont;
}
PostScriptDesc;
/* Part 3. Graphics Support Code. */
static void specialCaseCM(FILE *fp, type1fontfamily family, int familynum)
{
fprintf(fp, "%% begin encoding\n");
fprintf(fp, "/SymbolEncoding [\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /space /exclam /universal /numbersign /existential /percent /ampersand /suchthat\n");
fprintf(fp, " /parenleft /parenright /asteriskmath /plus /comma /minus /period /slash\n");
fprintf(fp, " /zero /one /two /three /four /five /six /seven\n");
fprintf(fp, " /eight /nine /colon /semicolon /less /equal /greater /question\n");
fprintf(fp, " /congruent /Alpha /Beta /Chi /Delta /Epsilon /Phi /Gamma\n");
fprintf(fp, " /Eta /Iota /theta1 /Kappa /Lambda /Mu /Nu /Omicron\n");
fprintf(fp, " /Pi /Theta /Rho /Sigma /Tau /Upsilon /sigma1 /Omega\n");
fprintf(fp, " /Xi /Psi /Zeta /bracketleft /therefore /bracketright /perpendicular /underscore\n");
fprintf(fp, " /radicalex /alpha /beta /chi /delta /epsilon /phi /gamma\n");
fprintf(fp, " /eta /iota /phi1 /kappa /lambda /mu /nu /omicron\n");
fprintf(fp, " /pi /theta /rho /sigma /tau /upsilon /omega1 /omega\n");
fprintf(fp, " /xi /psi /zeta /braceleft /bar /braceright /similar /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef\n");
fprintf(fp, " /Euro /Upsilon1 /minute /lessequal /fraction /infinity /florin /club\n");
fprintf(fp, " /diamond /heart /spade /arrowboth /arrowleft /arrowup /arrowright /arrowdown\n");
fprintf(fp, " /degree /plusminus /second /greaterequal /multiply /proportional /partialdiff /bullet\n");
fprintf(fp, " /divide /notequal /equivalence /approxequal /ellipsis /arrowvertex /arrowhorizex /carriagereturn\n");
fprintf(fp, " /aleph /Ifraktur /Rfraktur /weierstrass /circlemultiply /circleplus /emptyset /intersection\n");
fprintf(fp, " /union /propersuperset /reflexsuperset /notsubset /propersubset /reflexsubset /element /notelement\n");
fprintf(fp, " /angle /gradient /registerserif /copyrightserif /trademarkserif /product /radical /dotmath\n");
fprintf(fp, " /logicalnot /logicaland /logicalor /arrowdblboth /arrowdblleft /arrowdblup /arrowdblright /arrowdbldown\n");
fprintf(fp, " /lozenge /angleleft /registersans /copyrightsans /trademarksans /summation /parenlefttp /parenleftex\n");
fprintf(fp, " /parenleftbt /bracketlefttp /bracketleftex /bracketleftbt /bracelefttp /braceleftmid /braceleftbt /braceex\n");
fprintf(fp, " /.notdef /angleright /integral /integraltp /integralex /integralbt /parenrighttp /parenrightex\n");
fprintf(fp, " /parenrightbt /bracketrighttp /bracketrightex /bracketrightbt /bracerighttp /bracerightmid /bracerightbt /.notdef\n");
fprintf(fp, "] def\n");
fprintf(fp, "%% end encoding\n");
fprintf(fp, "/mergefonts\n");
fprintf(fp, "{ /targetencoding exch def\n");
fprintf(fp, " /fontarray exch def\n");
fprintf(fp, " fontarray 0 get dup maxlength dict begin\n");
fprintf(fp, " { 1 index /FID ne { def } { pop pop } ifelse } forall\n");
fprintf(fp, " %% Create a new dictionary\n");
fprintf(fp, " /CharStrings 256 dict def\n");
fprintf(fp, " %% Add a definition of .notdef\n");
fprintf(fp, " fontarray\n");
fprintf(fp, " { /CharStrings get dup /.notdef known\n");
fprintf(fp, " { /.notdef get /result exch def exit }\n");
fprintf(fp, " { pop } ifelse\n");
fprintf(fp, " } forall\n");
fprintf(fp, " CharStrings /.notdef result put\n");
fprintf(fp, " %% Add in the other definitions\n");
fprintf(fp, " targetencoding\n");
fprintf(fp, " { /code exch def\n");
fprintf(fp, " %% Check that it is not a .notdef\n");
fprintf(fp, " code /.notdef eq\n");
fprintf(fp, " { /.notdef }\n");
fprintf(fp, " { fontarray\n");
fprintf(fp, " { /CharStrings get dup code known\n");
fprintf(fp, " { code get /result exch def /found true def exit }\n");
fprintf(fp, " { pop /found false def } ifelse\n");
fprintf(fp, " } forall\n");
fprintf(fp, " %% define character if it was found and accumulate encoding\n");
fprintf(fp, " found { CharStrings code result put code } { /.notdef } ifelse\n");
fprintf(fp, " } ifelse\n");
fprintf(fp, " } forall\n");
fprintf(fp, " %% grab new encoding off of stack\n");
fprintf(fp, " 256 array astore /Encoding exch def\n");
fprintf(fp, " %% Undefine some local variables\n");
fprintf(fp, " currentdict /fontarray undef\n");
fprintf(fp, " currentdict /targetencoding undef\n");
fprintf(fp, " currentdict /code undef\n");
fprintf(fp, " currentdict /result undef\n");
fprintf(fp, " currentdict /found undef\n");
fprintf(fp, " %% Leave new font on the stack\n");
fprintf(fp, " currentdict\n");
fprintf(fp, " end\n");
fprintf(fp, "} def\n");
fprintf(fp, "%%%%IncludeResource: font %s\n",
family->fonts[0]->name);
fprintf(fp, "%%%%IncludeResource: font CMSY10\n");
fprintf(fp, "[ /%s findfont /CMSY10 findfont ] %s mergefonts\n",
family->fonts[0]->name, family->encoding->name);
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + 1);
fprintf(fp, "%%%%IncludeResource: font %s\n",
family->fonts[1]->name);
fprintf(fp, "%%%%IncludeResource: font CMBSY10\n");
fprintf(fp, "[ /%s findfont /CMBSY10 findfont ] %s mergefonts\n",
family->fonts[1]->name, family->encoding->name);
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + 2);
fprintf(fp, "%%%%IncludeResource: font %s\n",
family->fonts[2]->name);
fprintf(fp, "[ /%s findfont /CMSY10 findfont ] %s mergefonts\n",
family->fonts[2]->name, family->encoding->name);
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + 3);
fprintf(fp, "%%%%IncludeResource: font %s\n",
family->fonts[3]->name);
fprintf(fp, "[ /%s findfont /CMBSY10 findfont ] %s mergefonts\n",
family->fonts[3]->name, family->encoding->name);
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + 4);
fprintf(fp, "%%%%IncludeResource: font CMMI10\n");
fprintf(fp, "[ /CMR10 findfont /CMSY10 findfont /CMMI10 findfont ] SymbolEncoding mergefonts\n");
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + 5);
}
static void PSEncodeFonts(FILE *fp, PostScriptDesc *pd)
{
type1fontlist fonts = pd->fonts;
int familynum = 1;
int haveWrittenDefaultEnc = 0;
cidfontlist cidfonts = pd->cidfonts;
int cidfamilynum = 1;
while (fonts) {
int dontcare;
/*
* Has the encoding already been used on the device?
*/
encodinginfo encoding =
findDeviceEncoding(fonts->family->encoding->encpath,
pd->encodings, &dontcare);
/*
* If we've added the encoding to the device then it has been
* written to file ...
*
* ... UNLESS this is the default encoding for the device, in
* which case it has been added, but not written to file.
*
* Use haveWrittenDefaultEnc to make sure we only do it once.
*/
if (!encoding ||
(encoding == pd->encodings->encoding && !haveWrittenDefaultEnc)) {
/*
* Don't need to add default encoding again.
*/
if (encoding != pd->encodings->encoding) {
/*
* The encoding should have been loaded when the
* font was loaded
*/
encoding = findEncoding(fonts->family->encoding->encpath,
pd->encodings, FALSE);
if (!encoding)
warning(_("corrupt loaded encodings; encoding not recorded"));
else {
/*
* Record encoding on device's list of encodings so
* don't write same encoding more than once
*/
encodinglist enclist = addDeviceEncoding(encoding,
pd->encodings);
if (enclist)
pd->encodings = enclist;
else
warning(_("failed to record device encoding"));
}
} else {
/*
* Make sure we only write default encoding once.
*/
haveWrittenDefaultEnc = 1;
}
/*
* Include encoding unless it is ISOLatin1Encoding,
* which is predefined
*/
if (strcmp(fonts->family->encoding->name, "ISOLatin1Encoding"))
fprintf(fp, "%% begin encoding\n%s def\n%% end encoding\n",
fonts->family->encoding->enccode);
}
if(strcmp(fonts->family->fonts[4]->name,
"CMSY10 CMBSY10 CMMI10") == 0) {
/* use different ps fragment for CM fonts */
specialCaseCM(fp, fonts->family, familynum);
} else {
int i;
for (i = 0; i < 4 ; i++) {
fprintf(fp, "%%%%IncludeResource: font %s\n",
fonts->family->fonts[i]->name);
fprintf(fp, "/%s findfont\n",
fonts->family->fonts[i]->name);
fprintf(fp, "dup length dict begin\n");
fprintf(fp, " {1 index /FID ne {def} {pop pop} ifelse} forall\n");
fprintf(fp, " /Encoding %s def\n",
fonts->family->encoding->name);
fprintf(fp, " currentdict\n");
fprintf(fp, " end\n");
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + i + 1);
}
fprintf(fp, "%%%%IncludeResource: font %s\n",
fonts->family->fonts[4]->name);
fprintf(fp, "/%s findfont\n",
fonts->family->fonts[4]->name);
fprintf(fp, "dup length dict begin\n");
fprintf(fp, " {1 index /FID ne {def} {pop pop} ifelse} forall\n");
fprintf(fp, " currentdict\n");
fprintf(fp, " end\n");
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + 5);
}
familynum++;
fonts = fonts->next;
}
while(cidfonts) {
int i;
char *name = cidfonts->cidfamily->cidfonts[0]->name;
fprintf(fp, "%%%%IncludeResource: CID fake Bold font %s\n", name);
fprintf(fp, "/%s-Bold\n/%s /CIDFont findresource\n", name, name);
fprintf(fp, "%s", CIDBoldFontStr1);
fprintf(fp, "%s", CIDBoldFontStr2);
for (i = 0; i < 4 ; i++) {
char *fmt = NULL /* -Wall */;
fprintf(fp, "%%%%IncludeResource: CID font %s-%s\n", name,
cidfonts->cidfamily->cmap);
switch(i) {
case 0: fmt = "/%s-%s findfont\n";
break;
case 1: fmt = "/%s-Bold-%s findfont\n";
break;
case 2: fmt = "/%s-%s findfont [1 0 .3 1 0 0] makefont\n";
break;
case 3: fmt = "/%s-Bold-%s findfont [1 0 .3 1 0 0] makefont\n";
break;
default:
break;
}
fprintf(fp, fmt, name, cidfonts->cidfamily->cmap);
fprintf(fp, "dup length dict begin\n");
fprintf(fp, " {1 index /FID ne {def} {pop pop} ifelse} forall\n");
fprintf(fp, " currentdict\n");
fprintf(fp, " end\n");
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + (cidfamilynum - 1)*5 + i + 1);
}
/*
* Symbol font
*/
fprintf(fp, "%%%%IncludeResource: font %s\n",
cidfonts->cidfamily->symfont->name);
fprintf(fp, "/%s findfont\n",
cidfonts->cidfamily->symfont->name);
fprintf(fp, "dup length dict begin\n");
fprintf(fp, " {1 index /FID ne {def} {pop pop} ifelse} forall\n");
fprintf(fp, " currentdict\n");
fprintf(fp, " end\n");
fprintf(fp, "/Font%d exch definefont pop\n",
(familynum - 1)*5 + (cidfamilynum - 1)*5 + 5);
cidfamilynum++;
cidfonts = cidfonts->next;
}
}
/* The variables "paperwidth" and "paperheight" give the dimensions */
/* of the (unrotated) printer page in points whereas the graphics */
/* region box is for the rotated page. */
static void PSFileHeader(FILE *fp,
const char *papername, double paperwidth,
double paperheight, Rboolean landscape,
int EPSFheader, Rboolean paperspecial,
double left, double bottom, double right, double top,
const char *title,
PostScriptDesc *pd)
{
int i;
SEXP prolog;
type1fontlist fonts = pd->fonts;
int firstfont = 1;
if(EPSFheader)
fprintf(fp, "%%!PS-Adobe-3.0 EPSF-3.0\n");
else
fprintf(fp, "%%!PS-Adobe-3.0\n");
/*
* DocumentNeededResources names all fonts
*/
while (fonts) {
for (i=0; i<5; i++)
if (firstfont) {
fprintf(fp, "%%%%DocumentNeededResources: font %s\n",
fonts->family->fonts[0]->name);
firstfont = 0;
} else
fprintf(fp, "%%%%+ font %s\n", fonts->family->fonts[i]->name);
fonts = fonts->next;
}
if(!EPSFheader)
fprintf(fp, "%%%%DocumentMedia: %s %.0f %.0f 0 () ()\n",
papername, paperwidth, paperheight);
fprintf(fp, "%%%%Title: %s\n", title);
fprintf(fp, "%%%%Creator: R Software\n");
fprintf(fp, "%%%%Pages: (atend)\n");
if (!EPSFheader && !paperspecial) { /* gs gets confused by this */
if (landscape)
fprintf(fp, "%%%%Orientation: Landscape\n");
else
fprintf(fp, "%%%%Orientation: Portrait\n");
}
fprintf(fp, "%%%%BoundingBox: %.0f %.0f %.0f %.0f\n",
left, bottom, right, top);
fprintf(fp, "%%%%EndComments\n");
fprintf(fp, "%%%%BeginProlog\n");
fprintf(fp, "/bp { gs");
if (streql(pd->colormodel, "srgb")) fprintf(fp, " sRGB");
if (landscape)
fprintf(fp, " %.2f 0 translate 90 rotate", paperwidth);
fprintf(fp, " gs } def\n");
prolog = findVar(install(".ps.prolog"), R_GlobalEnv);
if(prolog == R_UnboundValue) {
/* if no object is visible, look in the graphics namespace */
SEXP graphicsNS = R_FindNamespace(ScalarString(mkChar("grDevices")));
PROTECT(graphicsNS);
prolog = findVar(install(".ps.prolog"), graphicsNS);
/* under lazy loading this will be a promise on first use */
if(TYPEOF(prolog) == PROMSXP) {
PROTECT(prolog);
prolog = eval(prolog, graphicsNS);
UNPROTECT(1);
}
UNPROTECT(1);
}
if(!isString(prolog))
error(_("object '.ps.prolog' is not a character vector"));
fprintf(fp, "%% begin .ps.prolog\n");
for (i = 0; i < length(prolog); i++)
fprintf(fp, "%s\n", CHAR(STRING_ELT(prolog, i)));
fprintf(fp, "%% end .ps.prolog\n");
if (streql(pd->colormodel, "srgb+gray") || streql(pd->colormodel, "srgb")) {
SEXP graphicsNS = R_FindNamespace(ScalarString(mkChar("grDevices")));
PROTECT(graphicsNS);
prolog = findVar(install(".ps.prolog.srgb"), graphicsNS);
/* under lazy loading this will be a promise on first use */
if(TYPEOF(prolog) == PROMSXP) {
PROTECT(prolog);
prolog = eval(prolog, graphicsNS);
UNPROTECT(1);
}
UNPROTECT(1);
for (i = 0; i < length(prolog); i++)
fprintf(fp, "%s\n", CHAR(STRING_ELT(prolog, i)));
}
if (streql(pd->colormodel, "srgb+gray"))
fprintf(fp, "/srgb { sRGB setcolor } bind def\n");
else if (streql(pd->colormodel, "srgb"))
fprintf(fp, "/srgb { setcolor } bind def\n");
PSEncodeFonts(fp, pd);
fprintf(fp, "%%%%EndProlog\n");
}
static void PostScriptFileTrailer(FILE *fp, int pageno)
{
fprintf(fp, "ep\n");
fprintf(fp, "%%%%Trailer\n");
fprintf(fp, "%%%%Pages: %d\n", pageno);
fprintf(fp, "%%%%EOF\n");
}
static void PostScriptStartPage(FILE *fp, int pageno)
{
fprintf(fp, "%%%%Page: %d %d\n", pageno, pageno);
fprintf(fp, "bp\n");
}
static void PostScriptEndPage(FILE *fp)
{
fprintf(fp, "ep\n");
}
static void PostScriptSetClipRect(FILE *fp, double x0, double x1,
double y0, double y1)
{
fprintf(fp, "%.2f %.2f %.2f %.2f cl\n", x0, y0, x1, y1);
}
static void PostScriptSetLineWidth(FILE *fp, double linewidth)
{
/* Must not allow line width to be zero */
if (linewidth < .01)
linewidth = .01;
fprintf(fp, "%.2f setlinewidth\n", linewidth);
}
static void PostScriptSetLineEnd(FILE *fp, R_GE_lineend lend)
{
int lineend = 1; /* -Wall */
switch (lend) {
case GE_ROUND_CAP:
lineend = 1;
break;
case GE_BUTT_CAP:
lineend = 0;
break;
case GE_SQUARE_CAP:
lineend = 2;
break;
default:
error(_("invalid line end"));
}
fprintf(fp, "%1d setlinecap\n", lineend);
}
static void PostScriptSetLineJoin(FILE *fp, R_GE_linejoin ljoin)
{
int linejoin = 1; /* -Wall */
switch (ljoin) {
case GE_ROUND_JOIN:
linejoin = 1;
break;
case GE_MITRE_JOIN:
linejoin = 0;
break;
case GE_BEVEL_JOIN:
linejoin = 2;
break;
default:
error(_("invalid line join"));
}
fprintf(fp, "%1d setlinejoin\n", linejoin);
}
static void PostScriptSetLineMitre(FILE *fp, double linemitre)
{
if (linemitre < 1)
error(_("invalid line mitre"));
fprintf(fp, "%.2f setmiterlimit\n", linemitre);
}
static void PostScriptSetFont(FILE *fp, int fontnum, double size)
{
fprintf(fp, "/Font%d findfont %.0f s\n", fontnum, size);
}
static void
PostScriptSetLineTexture(FILE *fp, const char *dashlist, int nlty,
double lwd, int lend)
{
/* use same macro for Postscript and PDF */
/* Historically the adjustment was 1 to allow for round end caps.
As from 2.11.0, no adjustment is done for butt endcaps.
The + 1 adjustment on the 'off' segments seems wrong, but it
has been left in for back-compatibility
*/
#define PP_SetLineTexture(_CMD_, adj) \
double dash[8], a = adj; \
int i; \
Rboolean allzero = TRUE; \
for (i = 0; i < nlty; i++) { \
dash[i] = lwd * \
((i % 2) ? (dashlist[i] + a) \
: ((nlty == 1 && dashlist[i] == 1.) ? 1. : dashlist[i] - a) ); \
if (dash[i] < 0) dash[i] = 0; \
if (dash[i] > .01) allzero = FALSE; \
} \
fprintf(fp,"["); \
if (!allzero) { \
for (i = 0; i < nlty; i++) { \
fprintf(fp," %.2f", dash[i]); \
} \
} \
fprintf(fp,"] 0 %s\n", _CMD_)
PP_SetLineTexture("setdash", (lend == GE_BUTT_CAP) ? 0. : 1.);
}
static void PostScriptMoveTo(FILE *fp, double x, double y)
{
fprintf(fp, "%.2f %.2f m\n", x, y);
}
static void PostScriptRLineTo(FILE *fp, double x0, double y0,
double x1, double y1)
{
double x = fround(x1, 2) - fround(x0, 2),
y = fround(y1, 2) - fround(y0, 2);
/* Warning: some machines seem to compute these differently from
others, and we do want to diff the output. x and y should be
above around 0.01 or negligible (1e-14), and it is the latter case
we are watching out for here.
*/
if(fabs(x) < 0.005) fprintf(fp, "0"); else fprintf(fp, "%.2f", x);
if(fabs(y) < 0.005) fprintf(fp, " 0"); else fprintf(fp, " %.2f", y);
fprintf(fp, " l\n");
}
static void PostScriptStartPath(FILE *fp)
{
fprintf(fp, "np\n");
}
static void PostScriptEndPath(FILE *fp)
{
fprintf(fp, "o\n");
}
static void PostScriptRectangle(FILE *fp, double x0, double y0,
double x1, double y1)
{
fprintf(fp, "%.2f %.2f %.2f %.2f r ", x0, y0, x1-x0, y1-y0);
}
static void PostScriptCircle(FILE *fp, double x, double y, double r)
{
fprintf(fp, "%.2f %.2f %.2f c ", x, y, r);
}
static void PostScriptWriteString(FILE *fp, const char *str, size_t nb)
{
size_t i;
fputc('(', fp);
for (i = 0 ; i < nb && *str; i++, str++)
switch(*str) {
case '\n':
fprintf(fp, "\\n");
break;
case '\\':
fprintf(fp, "\\\\");
break;
case '-':
#ifdef USE_HYPHEN
if (!isdigit((int)str[1]))
fputc(PS_hyphen, fp);
else
#endif
fputc(*str, fp);
break;
case '(':
case ')':
fprintf(fp, "\\%c", *str);
break;
default:
fputc(*str, fp);
break;
}
fputc(')', fp);
}
static FontMetricInfo *metricInfo(const char *, int, PostScriptDesc *);
static void PostScriptText(FILE *fp, double x, double y,
const char *str, size_t nb, double xc, double rot,
const pGEcontext gc,
pDevDesc dd)
{
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
fprintf(fp, "%.2f %.2f ", x, y);
PostScriptWriteString(fp, str, nb);
if(xc == 0) fprintf(fp, " 0");
else if(xc == 0.5) fprintf(fp, " .5");
else if(xc == 1) fprintf(fp, " 1");
else fprintf(fp, " %.2f", xc);
if(rot == 0) fprintf(fp, " 0");
else if(rot == 90) fprintf(fp, " 90");
else fprintf(fp, " %.2f", rot);
fprintf(fp, " t\n");
}
static void PostScriptText2(FILE *fp, double x, double y,
const char *str, size_t nb,
Rboolean relative, double rot,
const pGEcontext gc,
pDevDesc dd)
{
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
if(relative) {
fprintf(fp, "\n%.3f ", x);
PostScriptWriteString(fp, str, nb);
fprintf(fp, " tb");
} else {
fprintf(fp, "%.2f %.2f ", x, y);
PostScriptWriteString(fp, str, nb);
if(rot == 0) fprintf(fp, " 0");
else if(rot == 90) fprintf(fp, " 90");
else fprintf(fp, " %.2f", rot);
fprintf(fp, " ta");
}
}
static void PostScriptHexText(FILE *fp, double x, double y,
const char *str, size_t strlen,
double xc, double rot)
{
unsigned char *p = (unsigned char *)str;
size_t i;
fprintf(fp, "%.2f %.2f ", x, y);
fprintf(fp, "<");
for(i = 0; i < strlen; i++) fprintf(fp, "%02x", *p++);
fprintf(fp, ">");
if(xc == 0) fprintf(fp, " 0");
else if(xc == 0.5) fprintf(fp, " .5");
else if(xc == 1) fprintf(fp, " 1");
else fprintf(fp, " %.2f", xc);
if(rot == 0) fprintf(fp, " 0");
else if(rot == 90) fprintf(fp, " 90");
else fprintf(fp, " %.2f", rot);
fprintf(fp, " t\n");
}
static void
PostScriptTextKern(FILE *fp, double x, double y,
const char *str, double xc, double rot,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
int face = gc->fontface;
FontMetricInfo *metrics;
size_t i, n, nout = 0;
int j, w;
unsigned char p1, p2;
double fac = 0.001 * floor(gc->cex * gc->ps + 0.5);
Rboolean relative = FALSE;
Rboolean haveKerning = FALSE;
if(face < 1 || face > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"), face);
face = 1;
}
/* check if this is T1 -- should be, but be safe*/
if(!isType1Font(gc->fontfamily, PostScriptFonts, pd->defaultFont)) {
PostScriptText(fp, x, y, str, strlen(str), xc, rot, gc, dd);
return;
}
metrics = metricInfo(gc->fontfamily, face, pd);
n = strlen(str);
if (n < 1) return;
/* First check for any kerning */
for(i = 0; i < n-1; i++) {
p1 = str[i];
p2 = str[i+1];
#ifdef USE_HYPHEN
if (p1 == '-' && !isdigit((int)p2))
p1 = (unsigned char)PS_hyphen;
#endif
for (j = metrics->KPstart[p1]; j < metrics->KPend[p1]; j++)
if(metrics->KernPairs[j].c2 == p2 &&
metrics->KernPairs[j].c1 == p1) {
haveKerning = TRUE;
break;
}
}
if(haveKerning) {
/* We have to start at the left edge, as we are going
to do this in pieces */
if (xc != 0) {
double rot1 = rot * M_PI/180.;
int w = 0; short wx;
for(i = 0; i < n; i++) {
unsigned char p1 = str[i];
wx = metrics->CharInfo[(int)p1].WX;
w += (wx == NA_SHORT) ? 0 : wx;
}
x -= xc*fac*cos(rot1)*w;
y -= xc*fac*sin(rot1)*w;
}
for(i = 0; i < n-1; i++) {
p1 = str[i];
p2 = str[i+1];
#ifdef USE_HYPHEN
if (p1 == '-' && !isdigit((int)p2))
p1 = (unsigned char)PS_hyphen;
#endif
for (j = metrics->KPstart[p1]; j < metrics->KPend[p1]; j++)
if(metrics->KernPairs[j].c2 == p2 &&
metrics->KernPairs[j].c1 == p1) {
PostScriptText2(fp, x, y, str+nout, i+1-nout,
relative, rot, gc, dd);
nout = i+1;
w = metrics->KernPairs[j].kern;
x = fac*w; y = 0;
relative = TRUE;
break;
}
}
PostScriptText2(fp, x, y, str+nout, n-nout, relative, rot, gc, dd);
fprintf(fp, " gr\n");
} else
PostScriptText(fp, x, y, str, strlen(str), xc, rot, gc, dd);
}
/* Device Driver Actions */
static void PS_Circle(double x, double y, double r,
const pGEcontext gc,
pDevDesc dd);
static void PS_Clip(double x0, double x1, double y0, double y1,
pDevDesc dd);
static void PS_Close(pDevDesc dd);
static void PS_Line(double x1, double y1, double x2, double y2,
const pGEcontext gc,
pDevDesc dd);
static void PS_MetricInfo(int c,
const pGEcontext gc,
double* ascent, double* descent,
double* width, pDevDesc dd);
static void PS_NewPage(const pGEcontext gc,
pDevDesc dd);
static Rboolean PS_Open(pDevDesc, PostScriptDesc*);
static void PS_Polygon(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd);
static void PS_Polyline(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd);
static void PS_Rect(double x0, double y0, double x1, double y1,
const pGEcontext gc,
pDevDesc dd);
static void PS_Path(double *x, double *y,
int npoly, int *nper,
Rboolean winding,
const pGEcontext gc,
pDevDesc dd);
static void PS_Raster(unsigned int *raster, int w, int h,
double x, double y, double width, double height,
double rot, Rboolean interpolate,
const pGEcontext gc, pDevDesc dd);
static void PS_Size(double *left, double *right,
double *bottom, double *top,
pDevDesc dd);
static double PS_StrWidth(const char *str,
const pGEcontext gc,
pDevDesc dd);
static void PS_Text(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd);
static double PS_StrWidthUTF8(const char *str,
const pGEcontext gc,
pDevDesc dd);
static void PS_TextUTF8(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd);
/* PostScript Support (formerly in PostScript.c) */
static void PostScriptSetCol(FILE *fp, double r, double g, double b,
PostScriptDesc *pd)
{
const char *mm = pd->colormodel;
if(r == g && g == b &&
!(streql(mm, "cmyk") || streql(mm, "srgb")
|| streql(mm, "rgb-nogray")) ) { /* grey */
if(r == 0) fprintf(fp, "0");
else if (r == 1) fprintf(fp, "1");
else fprintf(fp, "%.4f", r);
fprintf(fp," setgray");
} else {
if(strcmp(mm, "gray") == 0) {
fprintf(fp, "%.4f setgray", 0.213*r + 0.715*g + 0.072*b);
// error(_("only gray colors are allowed in this color model"));
} else if(strcmp(mm, "cmyk") == 0) {
double c = 1.0-r, m=1.0-g, y=1.0-b, k=c;
k = fmin2(k, m);
k = fmin2(k, y);
if(k == 1.0) c = m = y = 0.0;
else { c = (c-k)/(1-k); m = (m-k)/(1-k); y = (y-k)/(1-k); }
/* else {c /= (1.-k); m /= (1.-k); y /= (1.-k);} */
if(c == 0) fprintf(fp, "0");
else if (c == 1) fprintf(fp, "1");
else fprintf(fp, "%.4f", c);
if(m == 0) fprintf(fp, " 0");
else if (m == 1) fprintf(fp, " 1");
else fprintf(fp, " %.4f", m);
if(y == 0) fprintf(fp, " 0");
else if (y == 1) fprintf(fp, " 1");
else fprintf(fp, " %.4f", y);
if(k == 0) fprintf(fp, " 0");
else if (k == 1) fprintf(fp, " 1");
else fprintf(fp, " %.4f", k);
fprintf(fp," setcmykcolor\n");
} else {
if(r == 0) fprintf(fp, "0");
else if (r == 1) fprintf(fp, "1");
else fprintf(fp, "%.4f", r);
if(g == 0) fprintf(fp, " 0");
else if (g == 1) fprintf(fp, " 1");
else fprintf(fp, " %.4f", g);
if(b == 0) fprintf(fp, " 0");
else if (b == 1) fprintf(fp, " 1");
else fprintf(fp, " %.4f", b);
if (streql(mm, "srgb+gray") || streql(mm, "srgb"))
fprintf(fp," srgb");
else fprintf(fp," rgb");
}
}
}
static void PostScriptSetFill(FILE *fp, double r, double g, double b,
PostScriptDesc *pd)
{
fprintf(fp,"/bg { ");
PostScriptSetCol(fp, r, g, b, pd);
fprintf(fp, " } def\n");
}
/* Driver Support Routines */
static void SetColor(int, pDevDesc);
static void SetFill(int, pDevDesc);
static void SetFont(int, int, pDevDesc);
static void SetLineStyle(const pGEcontext, pDevDesc dd);
static void Invalidate(pDevDesc);
static void PS_cleanup(int stage, pDevDesc dd, PostScriptDesc *pd);
Rboolean
PSDeviceDriver(pDevDesc dd, const char *file, const char *paper,
const char *family, const char **afmpaths, const char *encoding,
const char *bg, const char *fg, double width, double height,
Rboolean horizontal, double ps,
Rboolean onefile, Rboolean pagecentre, Rboolean printit,
const char *cmd, const char *title, SEXP fonts,
const char *colormodel, int useKern, Rboolean fillOddEven)
{
/* If we need to bail out with some sort of "error"
then we must free(dd) */
double xoff, yoff, pointsize;
rcolor setbg, setfg;
encodinginfo enc;
encodinglist enclist;
type1fontfamily font;
cidfontfamily cidfont = NULL;
int gotFont;
PostScriptDesc *pd;
/* Check and extract the device parameters */
if(strlen(file) > PATH_MAX - 1) {
free(dd);
error(_("filename too long in %s()"), "postscript");
}
/* allocate new postscript device description */
if (!(pd = (PostScriptDesc *) malloc(sizeof(PostScriptDesc)))) {
free(dd);
error(_("memory allocation problem in %s()"), "postscript");
}
/* from here on, if need to bail out with "error", must also */
/* free(pd) */
/* initialise postscript device description */
strcpy(pd->filename, file);
strcpy(pd->papername, paper);
strncpy(pd->title, title, 1023);
pd->title[1023] = '\0';
if (streql(colormodel, "grey")) strcpy(pd->colormodel, "grey");
else { strncpy(pd->colormodel, colormodel, 29); pd->colormodel[29] = '\0';}
pd->useKern = (useKern != 0);
pd->fillOddEven = fillOddEven;
if(strlen(encoding) > PATH_MAX - 1) {
PS_cleanup(1, dd, pd);
error(_("encoding path is too long in %s()"), "postscript");
}
/*
* Load the default encoding AS THE FIRST ENCODING FOR THIS DEVICE.
*
* encpath MUST NOT BE "default"
*/
pd->encodings = NULL;
if (!(enc = findEncoding(encoding, pd->encodings, FALSE)))
enc = addEncoding(encoding, 0);
if (enc && (enclist = addDeviceEncoding(enc, pd->encodings))) {
pd->encodings = enclist;
} else {
PS_cleanup(1, dd, pd);
error(_("failed to load encoding file in %s()"), "postscript");
}
/*****************************
* Load fonts
*****************************/
pd->fonts = NULL;
pd->cidfonts = NULL;
gotFont = 0;
/*
* If user specified afms then assume the font hasn't been loaded
* Could lead to redundant extra loading of a font, but not often(?)
*/
if (!strcmp(family, "User")) {
font = addDefaultFontFromAFMs(encoding, afmpaths, 0, pd->encodings);
} else {
/*
* Otherwise, family is a device-independent font family.
* One of the elements of postscriptFonts().
* NOTE this is the first font loaded on this device!
*/
/*
* Check first whether this font has been loaded
* in this R session
*/
font = findLoadedFont(family, encoding, FALSE);
cidfont = findLoadedCIDFont(family, FALSE);
if (!(font || cidfont)) {
/*
* If the font has not been loaded yet, load it.
*
* The family SHOULD be in the font database to get this far.
* (checked at R level in postscript() in postscript.R)
*/
if (isType1Font(family, PostScriptFonts, NULL)) {
font = addFont(family, FALSE, pd->encodings);
} else if (isCIDFont(family, PostScriptFonts, NULL)) {
cidfont = addCIDFont(family, FALSE);
} else {
/*
* Should NOT get here.
* AND if we do, we should free
*/
PS_cleanup(3, dd, pd);
error(_("invalid font type"));
}
}
}
if (font || cidfont) {
/*
* At this point the font is loaded, so add it to the
* device's list of fonts.
*
* If the user specified a vector of AFMs, it is a Type 1 font
*/
if (!strcmp(family, "User") ||
isType1Font(family, PostScriptFonts, NULL)) {
pd->fonts = addDeviceFont(font, pd->fonts, &gotFont);
pd->defaultFont = pd->fonts->family;
pd->defaultCIDFont = NULL;
} else /* (isCIDFont(family, PostScriptFonts)) */ {
pd->cidfonts = addDeviceCIDFont(cidfont, pd->cidfonts, &gotFont);
pd->defaultFont = NULL;
pd->defaultCIDFont = pd->cidfonts->cidfamily;
}
}
if (!gotFont) {
PS_cleanup(3, dd, pd);
error(_("failed to initialise default PostScript font"));
}
/*
* Load the font names sent in via the fonts arg
* NOTE that these are the font names specified at the
* R-level, NOT the translated font names.
*/
if (!isNull(fonts)) {
int i, dontcare, gotFonts = 0, nfonts = LENGTH(fonts);
type1fontlist fontlist;
cidfontlist cidfontlist;
for (i = 0; i < nfonts; i++) {
int index, cidindex;
const char *name = CHAR(STRING_ELT(fonts, i));
/*
* Check first whether this device is already
* using this font.
*/
if (findDeviceFont(name, pd->fonts, &index) ||
findDeviceCIDFont(name, pd->cidfonts, &cidindex))
gotFonts++;
else {
/*
* Check whether the font is loaded and, if not,
* load it.
*/
font = findLoadedFont(name, encoding, FALSE);
cidfont = findLoadedCIDFont(name, FALSE);
if (!(font || cidfont)) {
if (isType1Font(name, PostScriptFonts, NULL)) {
font = addFont(name, FALSE, pd->encodings);
} else if (isCIDFont(name, PostScriptFonts, NULL)) {
cidfont = addCIDFont(name, FALSE);
} else {
/*
* Should NOT get here.
*/
PS_cleanup(4, dd, pd);
error(_("invalid font type"));
}
}
/*
* Once the font is loaded, add it to the device's
* list of fonts.
*/
if (font || cidfont) {
if (isType1Font(name, PostScriptFonts, NULL)) {
if ((fontlist = addDeviceFont(font, pd->fonts,
&dontcare))) {
pd->fonts = fontlist;
gotFonts++;
}
} else /* (isCIDFont(family, PostScriptFonts)) */ {
if ((cidfontlist = addDeviceCIDFont(cidfont,
pd->cidfonts,
&dontcare))) {
pd->cidfonts = cidfontlist;
gotFonts++;
}
}
}
}
}
if (gotFonts < nfonts) {
PS_cleanup(4, dd, pd);
error(_("failed to initialise additional PostScript fonts"));
}
}
/*****************************
* END Load fonts
*****************************/
setbg = R_GE_str2col(bg);
setfg = R_GE_str2col(fg);
pd->width = width;
pd->height = height;
pd->landscape = horizontal;
pointsize = floor(ps);
if(R_TRANSPARENT(setbg) && R_TRANSPARENT(setfg)) {
PS_cleanup(4, dd, pd);
error(_("invalid foreground/background color (postscript)"));
}
pd->printit = printit;
if(strlen(cmd) > 2*PATH_MAX - 1) {
PS_cleanup(4, dd, pd);
error(_("'command' is too long"));
}
strcpy(pd->command, cmd);
if (printit && strlen(cmd) == 0) {
PS_cleanup(4, dd, pd);
error(_("'postscript(print.it=TRUE)' used with an empty 'print' command"));
}
strcpy(pd->command, cmd);
/* Deal with paper and plot size and orientation */
pd->paperspecial = FALSE;
if(!strcmp(pd->papername, "Default") ||
!strcmp(pd->papername, "default")) {
SEXP s = STRING_ELT(GetOption1(install("papersize")), 0);
if(s != NA_STRING && strlen(CHAR(s)) > 0)
strcpy(pd->papername, CHAR(s));
else strcpy(pd->papername, "a4");
}
if(!strcmp(pd->papername, "A4") ||
!strcmp(pd->papername, "a4")) {
pd->pagewidth = 21.0 / 2.54;
pd->pageheight = 29.7 /2.54;
}
else if(!strcmp(pd->papername, "Letter") ||
!strcmp(pd->papername, "letter") ||
!strcmp(pd->papername, "US") ||
!strcmp(pd->papername, "us")) {
pd->pagewidth = 8.5;
pd->pageheight = 11.0;
}
else if(!strcmp(pd->papername, "Legal") ||
!strcmp(pd->papername, "legal")) {
pd->pagewidth = 8.5;
pd->pageheight = 14.0;
}
else if(!strcmp(pd->papername, "Executive") ||
!strcmp(pd->papername, "executive")) {
pd->pagewidth = 7.25;
pd->pageheight = 10.5;
}
else if(!strcmp(pd->papername, "special")) {
if(pd->landscape) {
pd->pagewidth = height;
pd->pageheight = width;
} else {
pd->pagewidth = width;
pd->pageheight = height;
}
pd->paperspecial = TRUE;
}
else {
char errbuf[strlen(pd->papername) + 1];
strcpy(errbuf, pd->papername);
PS_cleanup(4, dd, pd);
error(_("invalid page type '%s' (postscript)"), errbuf);
}
pd->pagecentre = pagecentre;
pd->paperwidth = (int)(72 * pd->pagewidth);
pd->paperheight = (int)(72 * pd->pageheight);
pd->onefile = onefile;
if(pd->landscape) {
double tmp;
tmp = pd->pagewidth;
pd->pagewidth = pd->pageheight;
pd->pageheight = tmp;
}
if(strcmp(pd->papername, "special"))
{
if(pd->width < 0.1 || pd->width > pd->pagewidth-0.5)
pd->width = pd->pagewidth-0.5;
if(pd->height < 0.1 || pd->height > pd->pageheight-0.5)
pd->height = pd->pageheight-0.5;
}
if(pagecentre)
{
xoff = (pd->pagewidth - pd->width)/2.0;
yoff = (pd->pageheight - pd->height)/2.0;
} else {
xoff = yoff = 0.0;
}
pd->maxpointsize = (int)(72.0 * ((pd->pageheight > pd->pagewidth) ?
pd->pageheight : pd->pagewidth));
pd->pageno = pd->fileno = 0;
pd->warn_trans = FALSE;
/* Base Pointsize */
/* Nominal Character Sizes in Pixels */
/* Only right for 12 point font. */
/* Max pointsize suggested by Peter Dalgaard */
if(pointsize < 6.0) pointsize = 6.0;
if(pointsize > pd->maxpointsize) pointsize = pd->maxpointsize;
dd->startps = pointsize;
dd->startfont = 1;
dd->startlty = 0;
dd->startfill = setbg;
dd->startcol = setfg;
dd->startgamma = 1;
/* Set graphics parameters that must be set by device driver. */
/* Page dimensions in points. */
dd->left = 72 * xoff; /* left */
dd->right = 72 * (xoff + pd->width); /* right */
dd->bottom = 72 * yoff; /* bottom */
dd->top = 72 * (yoff + pd->height); /* top */
dd->clipLeft = dd->left; dd->clipRight = dd->right;
dd->clipBottom = dd->bottom; dd->clipTop = dd->top;
dd->cra[0] = 0.9 * pointsize;
dd->cra[1] = 1.2 * pointsize;
/* Character Addressing Offsets */
/* These offsets should center a single */
/* plotting character over the plotting point. */
/* Pure guesswork and eyeballing ... */
dd->xCharOffset = 0.4900;
dd->yCharOffset = 0.3333;
dd->yLineBias = 0.2;
/* Inches per Raster Unit */
/* We use points (72 dots per inch) */
dd->ipr[0] = 1.0/72.0;
dd->ipr[1] = 1.0/72.0;
/* GREset(.) dd->gp.mkh = dd->gp.cra[0] * dd->gp.ipr[0]; */
dd->canClip = TRUE;
dd->canHAdj = 2;
dd->canChangeGamma = FALSE;
/* Start the driver */
PS_Open(dd, pd);
dd->close = PS_Close;
dd->size = PS_Size;
dd->newPage = PS_NewPage;
dd->clip = PS_Clip;
dd->text = PS_Text;
dd->strWidth = PS_StrWidth;
dd->metricInfo = PS_MetricInfo;
dd->rect = PS_Rect;
dd->path = PS_Path;
dd->raster = PS_Raster;
dd->circle = PS_Circle;
dd->line = PS_Line;
dd->polygon = PS_Polygon;
dd->polyline = PS_Polyline;
/* dd->locator = PS_Locator;
dd->mode = PS_Mode; */
dd->hasTextUTF8 = TRUE;
dd->textUTF8 = PS_TextUTF8;
dd->strWidthUTF8 = PS_StrWidthUTF8;
dd->useRotatedTextInContour = TRUE;
dd->haveTransparency = 1;
dd->haveTransparentBg = 2;
dd->haveRaster = 3; /* non-missing colours */
dd->deviceSpecific = (void *) pd;
dd->displayListOn = FALSE;
return TRUE;
}
static void CheckAlpha(int color, PostScriptDesc *pd)
{
unsigned int alpha = R_ALPHA(color);
if (alpha > 0 && alpha < 255 && !pd->warn_trans) {
warning(_("semi-transparency is not supported on this device: reported only once per page"));
pd->warn_trans = TRUE;
}
}
static void SetColor(int color, pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
if(color != pd->current.col) {
PostScriptSetCol(pd->psfp,
R_RED(color)/255.0,
R_GREEN(color)/255.0,
R_BLUE(color)/255.0, pd);
fprintf(pd->psfp, "\n");
pd->current.col = color;
}
}
static void SetFill(int color, pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
if(color != pd->current.fill) {
PostScriptSetFill(pd->psfp,
R_RED(color)/255.0,
R_GREEN(color)/255.0,
R_BLUE(color)/255.0, pd);
pd->current.fill = color;
}
}
/* Note that the line texture is scaled by the line width. */
static void SetLineStyle(const pGEcontext gc, pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
char dashlist[8];
int i;
int newlty = gc->lty;
double newlwd = gc->lwd;
R_GE_lineend newlend = gc->lend;
R_GE_linejoin newljoin = gc->ljoin;
double newlmitre = gc->lmitre;
if (pd->current.lty != newlty || pd->current.lwd != newlwd) {
pd->current.lwd = newlwd;
pd->current.lty = newlty;
PostScriptSetLineWidth(pd->psfp, newlwd * 0.75);
/* process lty : */
for(i = 0; i < 8 && newlty & 15 ; i++) {
dashlist[i] = newlty & 15;
newlty = newlty >> 4;
}
PostScriptSetLineTexture(pd->psfp, dashlist, i, newlwd * 0.75, newlend);
}
if (pd->current.lend != newlend) {
pd->current.lend = newlend;
PostScriptSetLineEnd(pd->psfp, newlend);
}
if (pd->current.ljoin != newljoin) {
pd->current.ljoin = newljoin;
PostScriptSetLineJoin(pd->psfp, newljoin);
}
if (pd->current.lmitre != newlmitre) {
pd->current.lmitre = newlmitre;
PostScriptSetLineMitre(pd->psfp, newlmitre);
}
}
static void SetFont(int font, int size, pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
if(size < 1 || size > pd->maxpointsize)
size = 10;
if (size != pd->current.fontsize || font != pd->current.font) {
PostScriptSetFont(pd->psfp, font, size);
pd->current.fontsize = size;
pd->current.font = font;
}
}
static void PS_cleanup(int stage, pDevDesc dd, PostScriptDesc *pd)
{
switch (stage) {
case 4: /* Allocated fonts */
freeDeviceFontList(pd->fonts);
freeDeviceCIDFontList(pd->cidfonts);
case 3: /* Allocated encodings */
freeDeviceEncList(pd->encodings);
case 1: /* Allocated PDFDesc */
free(pd);
free(dd);
}
}
static Rboolean PS_Open(pDevDesc dd, PostScriptDesc *pd)
{
char buf[512];
if (strlen(pd->filename) == 0) {
if(strlen(pd->command) == 0)
pd->psfp = NULL;
else {
errno = 0;
pd->psfp = R_popen(pd->command, "w");
pd->open_type = 1;
}
if (!pd->psfp || errno != 0) {
char errbuf[strlen(pd->command) + 1];
strcpy(errbuf, pd->command);
PS_cleanup(4, dd, pd);
error(_("cannot open 'postscript' pipe to '%s'"), errbuf);
return FALSE;
}
} else if (pd->filename[0] == '|') {
errno = 0;
pd->psfp = R_popen(pd->filename + 1, "w");
pd->open_type = 1;
if (!pd->psfp || errno != 0) {
char errbuf[strlen(pd->filename + 1) + 1];
strcpy(errbuf, pd->filename + 1);
PS_cleanup(4, dd, pd);
error(_("cannot open 'postscript' pipe to '%s'"),
errbuf);
return FALSE;
}
} else {
snprintf(buf, 512, pd->filename, pd->fileno + 1); /* file 1 to start */
pd->psfp = R_fopen(R_ExpandFileName(buf), "w");
pd->open_type = 0;
}
if (!pd->psfp) {
PS_cleanup(4, dd, pd);
error(_("cannot open file '%s'"), buf);
return FALSE;
}
if(pd->landscape)
PSFileHeader(pd->psfp,
pd->papername,
pd->paperwidth,
pd->paperheight,
pd->landscape,
!(pd->onefile),
pd->paperspecial,
dd->bottom,
dd->left,
dd->top,
dd->right,
pd->title,
pd);
else
PSFileHeader(pd->psfp,
pd->papername,
pd->paperwidth,
pd->paperheight,
pd->landscape,
!(pd->onefile),
pd->paperspecial,
dd->left,
dd->bottom,
dd->right,
dd->top,
pd->title,
pd);
return TRUE;
}
/* The driver keeps track of the current values of colors, fonts and
line parameters, to save emitting some PostScript. In some cases,
the state becomes unknown, notably after changing the clipping and
at the start of a new page, so we have the following routine to
invalidate the saved values, which in turn causes the parameters to
be set before usage.
Called at the start of each page and by PS_Clip (since that
does a grestore).
*/
static void Invalidate(pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
pd->current.font = -1;
pd->current.fontsize = -1;
pd->current.lwd = -1;
pd->current.lty = -1;
pd->current.lend = 0;
pd->current.ljoin = 0;
pd->current.lmitre = 0;
pd->current.col = INVALID_COL;
pd->current.fill = INVALID_COL;
}
static void PS_Clip(double x0, double x1, double y0, double y1, pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
PostScriptSetClipRect(pd->psfp, x0, x1, y0, y1);
/* clipping does grestore so invalidate monitor variables */
Invalidate(dd);
}
static void PS_Size(double *left, double *right,
double *bottom, double *top,
pDevDesc dd)
{
*left = dd->left;
*right = dd->right;
*bottom = dd->bottom;
*top = dd->top;
}
static void PostScriptClose(pDevDesc dd);
static void PS_NewPage(const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
if(pd->onefile) {
if(++pd->pageno > 1) PostScriptEndPage(pd->psfp);
} else if(pd->pageno > 0) {
PostScriptClose(dd);
pd->fileno++;
PS_Open(dd, pd);
pd->pageno = 1;
} else pd->pageno++;
PostScriptStartPage(pd->psfp, pd->pageno);
Invalidate(dd);
CheckAlpha(gc->fill, pd);
if(R_OPAQUE(gc->fill)) {
/*
* Override some gc settings
*/
gc->col = R_TRANWHITE;
PS_Rect(0, 0, 72.0 * pd->pagewidth, 72.0 * pd->pageheight, gc, dd);
}
pd->warn_trans = FALSE;
}
#ifdef Win32
#include "run.h" /* for runcmd */
#endif
static void PostScriptClose(pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
PostScriptFileTrailer(pd->psfp, pd->pageno);
if(pd->open_type == 1)
pclose(pd->psfp);
else {
fclose(pd->psfp);
if (pd->printit) {
char buff[3*PATH_MAX+ 10];
int err = 0;
/* This should not be possible: the command is limited
to 2*PATH_MAX */
if(strlen(pd->command) + strlen(pd->filename) > 3*PATH_MAX) {
warning(_("error from postscript() in running:\n %s"),
pd->command);
return;
}
strcpy(buff, pd->command);
strcat(buff, " ");
strcat(buff, pd->filename);
/* Rprintf("buff is %s\n", buff); */
#ifdef Unix
err = R_system(buff);
#endif
#ifdef Win32
err = Rf_runcmd(buff, CE_NATIVE, 0, 0, NULL, NULL, NULL);
#endif
if (err)
warning(_("error from postscript() in running:\n %s"),
buff);
}
}
}
static void PS_Close(pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
PostScriptClose(dd);
freeDeviceCIDFontList(pd->cidfonts);
freeDeviceFontList(pd->fonts);
freeDeviceEncList(pd->encodings);
pd->cidfonts = NULL;
pd->fonts = NULL;
pd->encodings = NULL;
free(pd);
}
static FontMetricInfo
*CIDsymbolmetricInfo(const char *family, PostScriptDesc *pd)
{
FontMetricInfo *result = NULL;
int fontIndex;
cidfontfamily fontfamily;
fontfamily = findDeviceCIDFont(family, pd->cidfonts, &fontIndex);
if (fontfamily) {
/* (Type 1!) symbol font */
result = &(fontfamily->symfont->metrics);
} else
error(_("CID family '%s' not included in postscript() device"),
family);
return result;
}
static FontMetricInfo *metricInfo(const char *family, int face,
PostScriptDesc *pd) {
FontMetricInfo *result = NULL;
int fontIndex;
type1fontfamily fontfamily = findDeviceFont(family, pd->fonts, &fontIndex);
if (fontfamily) {
if(face < 1 || face > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"),
face);
face = 1;
}
result = &(fontfamily->fonts[face-1]->metrics);
} else
error(_("family '%s' not included in postscript() device"), family);
return result;
}
static char *convname(const char *family, PostScriptDesc *pd) {
char *result = NULL;
int fontIndex;
type1fontfamily fontfamily = findDeviceFont(family, pd->fonts, &fontIndex);
if (fontfamily)
result = fontfamily->encoding->convname;
else
error(_("family '%s' not included in postscript() device"), family);
return result;
}
static double PS_StrWidth(const char *str,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
if (isType1Font(gc->fontfamily, PostScriptFonts, pd->defaultFont)) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
metricInfo(gc->fontfamily, face, pd),
pd->useKern, face,
convname(gc->fontfamily, pd));
} else { /* cidfont(gc->fontfamily, PostScriptFonts) */
if (face < 5) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
NULL, FALSE, face, NULL);
} else {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
/* Send symbol face metric info */
CIDsymbolmetricInfo(gc->fontfamily, pd),
FALSE, face, NULL);
}
}
}
static double PS_StrWidthUTF8(const char *str,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
if (isType1Font(gc->fontfamily, PostScriptFonts, pd->defaultFont)) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_UTF8,
metricInfo(gc->fontfamily, face, pd),
pd->useKern, face,
convname(gc->fontfamily, pd));
} else { /* cidfont(gc->fontfamily, PostScriptFonts) */
if (face < 5) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_UTF8,
NULL, FALSE, face, NULL);
} else {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_UTF8,
/* Send symbol face metric info */
CIDsymbolmetricInfo(gc->fontfamily, pd),
FALSE, face, NULL);
}
}
}
static void PS_MetricInfo(int c,
const pGEcontext gc,
double* ascent, double* descent,
double* width, pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
if (isType1Font(gc->fontfamily, PostScriptFonts, pd->defaultFont)) {
PostScriptMetricInfo(c, ascent, descent, width,
metricInfo(gc->fontfamily, face, pd),
face == 5, convname(gc->fontfamily, pd));
} else { /* cidfont(gc->fontfamily, PostScriptFonts) */
if (face < 5) {
PostScriptCIDMetricInfo(c, ascent, descent, width);
} else {
PostScriptMetricInfo(c, ascent, descent, width,
CIDsymbolmetricInfo(gc->fontfamily, pd),
TRUE, "");
}
}
*ascent = floor(gc->cex * gc->ps + 0.5) * *ascent;
*descent = floor(gc->cex * gc->ps + 0.5) * *descent;
*width = floor(gc->cex * gc->ps + 0.5) * *width;
}
static void PS_Rect(double x0, double y0, double x1, double y1,
const pGEcontext gc,
pDevDesc dd)
{
int code;
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
/* code is set as follows */
/* code == 0, nothing to draw */
/* code == 1, outline only */
/* code == 2, fill only */
/* code == 3, outline and fill */
CheckAlpha(gc->fill, pd);
CheckAlpha(gc->col, pd);
code = 2 * (R_OPAQUE(gc->fill)) + (R_OPAQUE(gc->col));
if (code) {
if(code & 2)
SetFill(gc->fill, dd);
if(code & 1) {
SetColor(gc->col, dd);
SetLineStyle(gc, dd);
}
PostScriptRectangle(pd->psfp, x0, y0, x1, y1);
fprintf(pd->psfp, "p%d\n", code);
}
}
typedef rcolor * rcolorPtr;
static void PS_imagedata(rcolorPtr raster,
int w, int h,
PostScriptDesc *pd)
{
/* Each original byte is translated to two hex digits
(representing a number between 0 and 255) */
for (int i = 0; i < w*h; i++)
fprintf(pd->psfp, "%02x%02x%02x",
R_RED(raster[i]), R_GREEN(raster[i]), R_BLUE(raster[i]));
}
static void PS_grayimagedata(rcolorPtr raster,
int w, int h,
PostScriptDesc *pd)
{
/* Weights as in PDF gray conversion */
for (int i = 0; i < w*h; i++) {
double r = 0.213 * R_RED(raster[i]) + 0.715 * R_GREEN(raster[i])
+ 0.072 * R_BLUE(raster[i]);
fprintf(pd->psfp, "%02x", (int)(r+0.49));
}
}
/* Could support 'colormodel = "cmyk"' */
static void PS_writeRaster(unsigned int *raster, int w, int h,
double x, double y,
double width, double height,
double rot,
Rboolean interpolate,
pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
/* This takes the simple approach of creating an inline
* image.
* There is no support for semitransparent images, not even
* for transparent pixels (missing values in image(useRaster = TRUE) ).
*
* The version in R < 2.13.2 used colorimage, hence the DeviceRGB
* colour space.
*/
/* Now we are using level-2 features, there are other things we could do
(a) encode the data more compactly, e.g. using
/DataSource currentfile /ASCII85Decode filter /FlateDecode filter def
(b) add a mask with ImageType 3: see PLRM 3rd ed section 4.10.6.
(c) interpolation (done but disabled, as at least ghostscript
seems to ignore the request, and Mac preview always
interpolates.)
(d) sRGB colorspace (done)
*/
/* Save graphics state */
fprintf(pd->psfp, "gsave\n");
/* set the colour space: this form of the image operator uses the
current colour space. */
if (streql(pd->colormodel, "srgb+gray"))
fprintf(pd->psfp, "sRGB\n");
else if (streql(pd->colormodel, "srgb")) /* set for page */ ;
else if (streql(pd->colormodel, "gray"))
fprintf(pd->psfp, "/DeviceGray setcolorspace\n");
else
fprintf(pd->psfp, "/DeviceRGB setcolorspace\n");
/* translate */
fprintf(pd->psfp, "%.2f %.2f translate\n", x, y);
/* rotate */
if (rot != 0.0) fprintf(pd->psfp, "%.2f rotate\n", rot);
/* scale */
fprintf(pd->psfp, "%.2f %.2f scale\n", width, height);
/* write dictionary */
fprintf(pd->psfp, "8 dict dup begin\n");
fprintf(pd->psfp, " /ImageType 1 def\n");
fprintf(pd->psfp, " /Width %d def\n", w);
fprintf(pd->psfp, " /Height %d def\n", h);
fprintf(pd->psfp, " /BitsPerComponent 8 def\n");
if (interpolate)
fprintf(pd->psfp, " /Interpolate true def\n");
if (streql(pd->colormodel, "gray"))
fprintf(pd->psfp, " /Decode [0 1] def\n");
else
fprintf(pd->psfp, " /Decode [0 1 0 1 0 1] def\n");
fprintf(pd->psfp, " /DataSource currentfile /ASCIIHexDecode filter def\n");
fprintf(pd->psfp, " /ImageMatrix [%d 0 0 %d 0 %d] def\n", w, -h, h);
fprintf(pd->psfp, "end\n");
fprintf(pd->psfp, "image\n");
/* now the data */
if (streql(pd->colormodel, "gray"))
PS_grayimagedata(raster, w, h, pd);
else
PS_imagedata(raster, w, h, pd);
fprintf(pd->psfp, ">\n");
/* Restore graphics state */
fprintf(pd->psfp, "grestore\n");
}
/* see comments above */
#define OLD 1
static void PS_Raster(unsigned int *raster, int w, int h,
double x, double y,
double width, double height,
double rot,
Rboolean interpolate,
const pGEcontext gc, pDevDesc dd)
{
#ifdef OLD
if (interpolate) {
/* Generate a new raster
* which is interpolated from the original
* Assume a resolution for the new raster of 72 dpi
* Ideally would allow user to set this.
*/
const void *vmax;
vmax = vmaxget();
int newW = (int) width;
int newH = (int) height;
unsigned int *newRaster =
(unsigned int *) R_alloc(newW * newH, sizeof(unsigned int));
R_GE_rasterInterpolate(raster, w, h,
newRaster, newW, newH);
PS_writeRaster(newRaster, newW, newH,
x, y, width, height, rot, FALSE, dd);
vmaxset(vmax);
} else {
PS_writeRaster(raster, w, h,
x, y, width, height, rot, FALSE, dd);
}
#else
PS_writeRaster(raster, w, h,
x, y, width, height, rot, interpolate, dd);
#endif
}
static void PS_Circle(double x, double y, double r,
const pGEcontext gc,
pDevDesc dd)
{
int code;
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
/* code is set as follows */
/* code == 0, nothing to draw */
/* code == 1, outline only */
/* code == 2, fill only */
/* code == 3, outline and fill */
CheckAlpha(gc->fill, pd);
CheckAlpha(gc->col, pd);
code = 2 * (R_OPAQUE(gc->fill)) + (R_OPAQUE(gc->col));
if (code) {
if(code & 2)
SetFill(gc->fill, dd);
if(code & 1) {
SetColor(gc->col, dd);
SetLineStyle(gc, dd);
}
PostScriptCircle(pd->psfp, x, y, r);
fprintf(pd->psfp, "p%d\n", code);
}
}
static void PS_Line(double x1, double y1, double x2, double y2,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
CheckAlpha(gc->col, pd);
/* FIXME : clip to the device extents here */
if(R_OPAQUE(gc->col)) {
SetColor(gc->col, dd);
SetLineStyle(gc, dd);
PostScriptStartPath(pd->psfp);
PostScriptMoveTo(pd->psfp, x1, y1);
PostScriptRLineTo(pd->psfp, x1, y1, x2, y2);
/* fprintf(pd->psfp, "%.2f %.2f rl\n", x2 - x1, y2 - y1);*/
PostScriptEndPath(pd->psfp);
}
}
static void PS_Polygon(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd;
int i, code;
pd = (PostScriptDesc *) dd->deviceSpecific;
/* code is set as follows */
/* code == 0, nothing to draw */
/* code == 1, outline only */
/* code == 2, fill only */
/* code == 3, outline and fill */
/* code == 6, eofill only */
/* code == 7, outline and eofill */
CheckAlpha(gc->fill, pd);
CheckAlpha(gc->col, pd);
code = 2 * (R_OPAQUE(gc->fill)) + (R_OPAQUE(gc->col));
if (code) {
if(code & 2) {
SetFill(gc->fill, dd);
if (pd->fillOddEven) code |= 4;
}
if(code & 1) {
SetColor(gc->col, dd);
SetLineStyle(gc, dd);
}
fprintf(pd->psfp, "np\n");
fprintf(pd->psfp, " %.2f %.2f m\n", x[0], y[0]);
for(i = 1 ; i < n ; i++)
if (i % 100 == 0)
fprintf(pd->psfp, "%.2f %.2f lineto\n", x[i], y[i]);
else
PostScriptRLineTo(pd->psfp, x[i-1], y[i-1], x[i], y[i]);
fprintf(pd->psfp, "cp p%d\n", code);
}
}
static void PS_Path(double *x, double *y,
int npoly, int *nper,
Rboolean winding,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd;
int i, j, index, code;
pd = (PostScriptDesc *) dd->deviceSpecific;
/* code is set as follows */
/* code == 0, nothing to draw */
/* code == 1, outline only */
/* code == 2, fill only */
/* code == 3, outline and fill */
/* code == 6, eofill only */
/* code == 7, outline and eofill */
CheckAlpha(gc->fill, pd);
CheckAlpha(gc->col, pd);
code = 2 * (R_OPAQUE(gc->fill)) + (R_OPAQUE(gc->col));
if (code) {
if(code & 2) {
SetFill(gc->fill, dd);
if (!winding) code |= 4;
}
if(code & 1) {
SetColor(gc->col, dd);
SetLineStyle(gc, dd);
}
fprintf(pd->psfp, "np\n");
index = 0;
for (i = 0; i < npoly; i++) {
fprintf(pd->psfp, " %.2f %.2f m\n", x[index], y[index]);
index++;
for(j = 1; j < nper[i]; j++) {
if (j % 100 == 0)
fprintf(pd->psfp, "%.2f %.2f lineto\n",
x[index], y[index]);
else
PostScriptRLineTo(pd->psfp, x[index-1], y[index-1],
x[index], y[index]);
index++;
}
fprintf(pd->psfp, "cp\n");
}
fprintf(pd->psfp, "p%d\n", code);
}
}
static void PS_Polyline(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd)
{
PostScriptDesc *pd;
int i;
pd = (PostScriptDesc*) dd->deviceSpecific;
CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col)) {
SetColor(gc->col, dd);
SetLineStyle(gc, dd);
fprintf(pd->psfp, "np\n");
fprintf(pd->psfp, "%.2f %.2f m\n", x[0], y[0]);
for(i = 1 ; i < n ; i++) {
/* split up solid lines (only) into chunks of size 1000 */
if(gc->lty == 0 && i%1000 == 0)
fprintf(pd->psfp, "currentpoint o m\n");
if (i % 100 == 0)
fprintf(pd->psfp, "%.2f %.2f lineto\n", x[i], y[i]);
else
PostScriptRLineTo(pd->psfp, x[i-1], y[i-1], x[i], y[i]);
}
fprintf(pd->psfp, "o\n");
}
}
static int translateFont(char *family, int style, PostScriptDesc *pd)
{
int result = style;
type1fontfamily fontfamily;
int fontIndex;
if(style < 1 || style > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"), style);
style = 1;
}
fontfamily = findDeviceFont(family, pd->fonts, &fontIndex);
if (fontfamily) {
result = (fontIndex - 1)*5 + style;
} else {
warning(_("family '%s' not included in postscript() device"), family);
}
return result;
}
static int numFonts(type1fontlist fonts) {
int i = 0;
while (fonts) {
i++;
fonts = fonts->next;
}
return i;
}
static int translateCIDFont(char *family, int style, PostScriptDesc *pd)
{
int result = style;
cidfontfamily fontfamily;
int fontIndex;
if(style < 1 || style > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"), style);
style = 1;
}
fontfamily = findDeviceCIDFont(family, pd->cidfonts, &fontIndex);
if (fontfamily) {
/*
* CID fonts all listed after all Type 1 fonts.
*/
result = (numFonts(pd->fonts)*5) + (fontIndex - 1)*5 + style;
} else {
warning(_("family '%s' not included in postscript() device"), family);
}
return result;
}
static void drawSimpleText(double x, double y, const char *str,
double rot, double hadj,
int font,
const pGEcontext gc,
pDevDesc dd) {
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
SetFont(font,
(int)floor(gc->cex * gc->ps + 0.5),dd);
CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col)) {
SetColor(gc->col, dd);
if(pd->useKern)
PostScriptTextKern(pd->psfp, x, y, str, hadj, rot, gc, dd);
else
PostScriptText(pd->psfp, x, y, str, strlen(str), hadj, rot, gc, dd);
}
}
/* <FIXME> it would make sense to cache 'cd' here, but we would also
need to know if the current locale's charset changes. However,
currently this is only called in a UTF-8 locale.
*/
static void mbcsToSbcs(const char *in, char *out, const char *encoding,
int enc)
{
void *cd = NULL;
const char *i_buf; char *o_buf;
size_t i_len, o_len, status;
#if 0
if(enc != CE_UTF8 &&
( !strcmp(encoding, "latin1") || !strcmp(encoding, "ISOLatin1")) ) {
mbcsToLatin1(in, out); /* more tolerant */
return;
}
#endif
if ((void*)-1 ==
(cd = Riconv_open(encoding, (enc == CE_UTF8) ? "UTF-8" : "")))
error(_("unknown encoding '%s' in 'mbcsToSbcs'"), encoding);
i_buf = (char *) in;
i_len = strlen(in)+1; /* include terminator */
o_buf = (char *) out;
o_len = i_len; /* must be the same or fewer chars */
next_char:
status = Riconv(cd, &i_buf, &i_len, &o_buf, &o_len);
/* libiconv 1.13 gives EINVAL on \xe0 in UTF-8 (as used in fBasics) */
if(status == (size_t) -1 && (errno == EILSEQ || errno == EINVAL)) {
warning(_("conversion failure on '%s' in 'mbcsToSbcs': dot substituted for <%02x>"),
in, (unsigned char) *i_buf),
*o_buf++ = '.'; i_buf++; o_len--; i_len--;
if(i_len > 0) goto next_char;
}
Riconv_close(cd);
if (status == (size_t)-1) /* internal error? */
error("conversion failure from %s to %s on '%s' in 'mbcsToSbcs'",
(enc == CE_UTF8) ? "UTF-8" : "native", encoding, in);
}
static void PS_Text0(double x, double y, const char *str, int enc,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
const char *str1 = str;
char *buff;
PostScriptDesc *pd = (PostScriptDesc *) dd->deviceSpecific;
if (gc->fontface == 5) {
if (isCIDFont(gc->fontfamily, PostScriptFonts, pd->defaultCIDFont)) {
drawSimpleText(x, y, str, rot, hadj,
translateCIDFont(gc->fontfamily, gc->fontface, pd),
gc, dd);
return;
} else {
drawSimpleText(x, y, str, rot, hadj,
translateFont(gc->fontfamily, gc->fontface, pd),
gc, dd);
return;
}
}
/* No symbol fonts from now on */
if (isCIDFont(gc->fontfamily, PostScriptFonts, pd->defaultCIDFont)) {
/* NB, we could be in a SBCS here */
size_t ucslen;
int fontIndex;
/*
* CID convert optimize PS encoding == locale encode case
*/
cidfontfamily cidfont = findDeviceCIDFont(gc->fontfamily,
pd->cidfonts,
&fontIndex);
if(!cidfont)
error(_("family '%s' not included in postscript() device"),
gc->fontfamily);
if (!dd->hasTextUTF8 &&
!strcmp(locale2charset(NULL), cidfont->encoding)) {
SetFont(translateCIDFont(gc->fontfamily, gc->fontface, pd),
(int)floor(gc->cex * gc->ps + 0.5),dd);
CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col)) {
SetColor(gc->col, dd);
PostScriptHexText(pd->psfp, x, y, str, strlen(str), hadj, rot);
}
return;
}
/*
* CID convert PS encoding != locale encode case
*/
ucslen = (dd->hasTextUTF8) ? Rf_utf8towcs(NULL, str, 0) : mbstowcs(NULL, str, 0);
if (ucslen != (size_t)-1) {
void *cd;
const char *i_buf; char *o_buf;
size_t nb, i_len, o_len, buflen = ucslen * sizeof(ucs2_t);
size_t status;
cd = (void*) Riconv_open(cidfont->encoding,
(enc == CE_UTF8) ? "UTF-8" : "");
if(cd == (void*)-1) {
warning(_("failed open converter to encoding '%s'"),
cidfont->encoding);
return;
}
R_CheckStack2(buflen);
unsigned char buf[buflen];
i_buf = (char *)str;
o_buf = (char *)buf;
i_len = strlen(str); /* do not include terminator */
nb = o_len = buflen;
status = Riconv(cd, &i_buf, (size_t *)&i_len,
(char **)&o_buf, (size_t *)&o_len);
Riconv_close(cd);
if(status == (size_t)-1)
warning(_("failed in text conversion to encoding '%s'"),
cidfont->encoding);
else {
SetFont(translateCIDFont(gc->fontfamily, gc->fontface, pd),
(int)floor(gc->cex * gc->ps + 0.5), dd);
CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col)) {
SetColor(gc->col, dd);
PostScriptHexText(pd->psfp, x, y, (char *)buf,
nb - o_len, hadj, rot);
}
}
return;
} else {
warning(_("invalid string in '%s'"), "PS_Text");
return;
}
}
/* Now using single-byte non-symbol font.
Was utf8locale, but it is not entirely obvious that only UTF-8
needs re-encoding, although we don't have any other MBCSs that
can sensibly be mapped to a SBCS.
It would be perverse (but possible) to write English in a
CJK MBCS.
*/
if((enc == CE_UTF8 || mbcslocale) && !strIsASCII(str)) {
R_CheckStack2(strlen(str)+1);
buff = alloca(strlen(str)+1); /* Output string cannot be longer */
mbcsToSbcs(str, buff, convname(gc->fontfamily, pd), enc);
str1 = buff;
}
drawSimpleText(x, y, str1, rot, hadj,
translateFont(gc->fontfamily, gc->fontface, pd),
gc, dd);
}
static void PS_Text(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
PS_Text0(x, y, str, CE_NATIVE, rot, hadj, gc, dd);
}
static void PS_TextUTF8(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
PS_Text0(x, y, str, CE_UTF8, rot, hadj, gc, dd);
}
/***********************************************************************
XFig driver shares font handling
************************************************************************/
typedef struct {
char filename[PATH_MAX];
char papername[64]; /* paper name */
int paperwidth; /* paper width in big points (1/72 in) */
int paperheight; /* paper height in big points */
Rboolean landscape; /* landscape mode */
int pageno; /* page number */
int fontnum; /* font number in XFig */
int maxpointsize;
double width; /* plot width in inches */
double height; /* plot height in inches */
double pagewidth; /* page width in inches */
double pageheight; /* page height in inches */
Rboolean pagecentre; /* centre image on page? */
double lwd; /* current line width */
int lty; /* current line type */
rcolor col; /* current color */
rcolor fill; /* current fill color */
rcolor bg; /* background color */
int XFigColors[534];
int nXFigColors;
FILE *psfp; /* output file */
FILE *tmpfp; /* temp file */
char tmpname[PATH_MAX];
Rboolean onefile;
Rboolean warn_trans; /* have we warned about translucent cols? */
int ymax; /* used to invert coord system */
char encoding[50]; /* for writing text */
Rboolean textspecial; /* use textspecial flag in xfig for latex integration */
Rboolean defaultfont; /* use the default font in xfig */
/*
* Fonts and encodings used on the device
*
* ASSUME ONLY ONE (DEFAULT) FOR NOW
*/
type1fontlist fonts;
encodinglist encodings;
} XFigDesc;
static void
XF_FileHeader(FILE *fp, const char *papername, Rboolean landscape,
Rboolean onefile)
{
fprintf(fp, "#FIG 3.2\n");
fprintf(fp, landscape ? "Landscape\n" : "Portrait\n");
fprintf(fp, "Flush Left\nInches\n");
/* Fix */fprintf(fp, "%s\n", papername);
fprintf(fp, "100.0\n");
fprintf(fp, onefile ? "Multiple\n" : "Single\n");
fprintf(fp, "-2\n"); /* no background */
fprintf(fp, "1200 2\n"); /* coordinate system */
fprintf(fp, "# End of XFig header\n");
}
static void XF_FileTrailer(FILE *fp)
{
fprintf(fp, "# end of XFig file\n");
}
static void XF_EndPage(FILE *fp)
{
fprintf(fp, "# end of XFig page\n");
}
static void XF_WriteString(FILE *fp, const char *str)
{
unsigned int c;
for ( ; *str; str++) {
c = (unsigned char)*str;
if (c > 127) {
fprintf(fp, "\\%o", c);
} else {
switch(*str) {
case '\n':
fprintf(fp, "\\n");
break;
case '\\':
fprintf(fp, "\\\\");
break;
default:
fputc(*str, fp);
break;
}
}
}
}
static void XF_CheckAlpha(int color, XFigDesc *pd)
{
unsigned int alpha = R_ALPHA(color);
if (alpha > 0 && alpha < 255 && !pd->warn_trans) {
warning(_("semi-transparency is not supported on this device: reported only once per page"));
pd->warn_trans = TRUE;
}
}
static int XF_SetColor(int color, XFigDesc *pd)
{
int i;
if(!R_OPAQUE(color)) return -1;
color = color & 0xffffff;
for (i = 0; i < pd->nXFigColors; i++)
if(color == pd->XFigColors[i]) return i;
if(pd->nXFigColors == 534)
error(_("ran out of colors in xfig()"));
/* new colour */
fprintf(pd->psfp, "0 %d #%02x%02x%02x\n", pd->nXFigColors,
R_RED(color), R_GREEN(color), R_BLUE(color));
pd->XFigColors[pd->nXFigColors] = color;
return pd->nXFigColors++;
}
static void XFconvert(double *x, double *y, XFigDesc *pd)
{
(*x) *= 16.667;
(*y) = pd->ymax - 16.667*(*y);
}
static int XF_SetLty(int lty)
{
switch(lty) {
case LTY_BLANK:
return -1;
case LTY_SOLID:
return 0;
case LTY_DASHED:
return 1;
case LTY_DOTTED:
return 2;
case LTY_DOTDASH:
return 3;
default:
warning(_("unimplemented line texture %08x: using Dash-double-dotted"),
lty);
return 4;
}
}
/* Device Driver Actions */
static void XFig_Circle(double x, double y, double r,
const pGEcontext gc,
pDevDesc dd);
static void XFig_Clip(double x0, double x1, double y0, double y1,
pDevDesc dd);
static void XFig_Close(pDevDesc dd);
static void XFig_Line(double x1, double y1, double x2, double y2,
const pGEcontext gc,
pDevDesc dd);
static void XFig_MetricInfo(int c,
const pGEcontext gc,
double* ascent, double* descent,
double* width, pDevDesc dd);
static void XFig_NewPage(const pGEcontext gc, pDevDesc dd);
static void XFig_Polygon(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd);
static void XFig_Polyline(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd);
static void XFig_Rect(double x0, double y0, double x1, double y1,
const pGEcontext gc,
pDevDesc dd);
static void XFig_Size(double *left, double *right,
double *bottom, double *top,
pDevDesc dd);
static double XFig_StrWidth(const char *str,
const pGEcontext gc,
pDevDesc dd);
static void XFig_Text(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd);
static Rboolean XFig_Open(pDevDesc, XFigDesc*);
/*
* Values taken from FIG format definition
*/
static int XFigBaseNum(const char *name)
{
int i;
if (!strcmp(name, "Times"))
i = 0;
else if (!strcmp(name, "AvantGarde"))
i = 4;
else if (!strcmp(name, "Bookman"))
i = 8;
else if (!strcmp(name, "Courier"))
i = 12;
else if (!strcmp(name, "Helvetica"))
i = 16;
else if (!strcmp(name, "Helvetica-Narrow"))
i = 20;
else if (!strcmp(name, "NewCenturySchoolbook"))
i = 24;
else if (!strcmp(name, "Palatino"))
i = 28;
else {
warning(_("unknown postscript font family '%s', using Helvetica"),
name);
i = 16;
}
return i;
}
static void XF_resetColors(XFigDesc *pd)
{
int i;
for(i = 0; i < 32; i++) pd->XFigColors[i] = 0;
pd->XFigColors[7] = 0xffffff; /* white */
pd->nXFigColors = 32;
}
/* Driver Support Routines */
static Rboolean
XFigDeviceDriver(pDevDesc dd, const char *file, const char *paper,
const char *family,
const char *bg, const char *fg,
double width, double height,
Rboolean horizontal, double ps,
Rboolean onefile, Rboolean pagecentre,
Rboolean defaultfont, Rboolean textspecial,
const char *encoding)
{
/* If we need to bail out with some sort of "error" */
/* then we must free(dd) */
int gotFont;
double xoff, yoff, pointsize;
XFigDesc *pd;
type1fontfamily font;
encodinginfo enc;
encodinglist enclist;
/* Check and extract the device parameters */
if(strlen(file) > PATH_MAX - 1) {
free(dd);
error(_("filename too long in %s()"), "xfig");
}
/* allocate new xfig device description */
if (!(pd = (XFigDesc *) malloc(sizeof(XFigDesc)))) {
free(dd);
error(_("memory allocation problem in %s()"), "xfig");
return FALSE;
}
/* from here on, if need to bail out with "error", must also */
/* free(pd) */
/* initialize xfig device description */
strcpy(pd->filename, file);
strcpy(pd->papername, paper);
pd->fontnum = XFigBaseNum(family);
/* this might have changed the family, so update */
if(pd->fontnum == 16) family = "Helvetica";
pd->bg = R_GE_str2col(bg);
pd->col = R_GE_str2col(fg);
pd->fill = R_TRANWHITE;
pd->width = width;
pd->height = height;
pd->landscape = horizontal;
pd->textspecial = textspecial;
pd->defaultfont = defaultfont;
pointsize = floor(ps);
if(R_TRANSPARENT(pd->bg) && R_TRANSPARENT(pd->col)) {
free(dd);
free(pd);
error(_("invalid foreground/background color (xfig)"));
}
pd->warn_trans = FALSE;
/*
* Load the default encoding AS THE FIRST ENCODING FOR THIS DEVICE.
*/
pd->encodings = NULL;
if (!(enc = findEncoding("ISOLatin1.enc", pd->encodings, FALSE)))
enc = addEncoding("ISOLatin1.enc", 0);
if (enc && (enclist = addDeviceEncoding(enc, pd->encodings))) {
pd->encodings = enclist;
} else {
free(dd);
free(pd);
error(_("failed to load encoding file in %s()"), "xfig");
}
/* Load default font */
pd->fonts = NULL;
gotFont = 0;
font = findLoadedFont(family, "ISOLatin1.enc", FALSE);
if (!font) {
/*
* If the font has not been loaded yet, load it.
*
* The family SHOULD be in the font database to get this far.
* (checked at R level in postscript() in postscript.R)
*/
if (isType1Font(family, PostScriptFonts, NULL)) {
font = addFont(family, FALSE, pd->encodings);
} else {
error(_("only Type 1 fonts supported for XFig"));
}
}
if (font) {
/*
* At this point the font is loaded, so add it to the
* device's list of fonts.
*/
pd->fonts = addDeviceFont(font, pd->fonts, &gotFont);
}
if (!gotFont) {
free(dd);
free(pd);
error(_("failed to initialise default XFig font"));
}
/* Deal with paper and plot size and orientation */
if(!strcmp(pd->papername, "Default") ||
!strcmp(pd->papername, "default")) {
SEXP s = STRING_ELT(GetOption1(install("papersize")), 0);
if(s != NA_STRING && strlen(CHAR(s)) > 0)
strcpy(pd->papername, CHAR(s));
else strcpy(pd->papername, "A4");
}
if(!strcmp(pd->papername, "A4") ||
!strcmp(pd->papername, "a4")) {
strcpy(pd->papername, "A4");
pd->pagewidth = 21.0 / 2.54;
pd->pageheight = 29.7 / 2.54;
}
else if(!strcmp(pd->papername, "Letter") ||
!strcmp(pd->papername, "letter")) {
strcpy(pd->papername, "Letter");
pd->pagewidth = 8.5;
pd->pageheight = 11.0;
}
else if(!strcmp(pd->papername, "Legal") ||
!strcmp(pd->papername, "legal")) {
strcpy(pd->papername, "Legal");
pd->pagewidth = 8.5;
pd->pageheight = 14.0;
}
else {
freeDeviceFontList(pd->fonts);
freeDeviceEncList(pd->encodings);
pd->fonts = NULL;
pd->encodings = NULL;
free(dd);
free(pd);
error(_("invalid page type '%s' (xfig)"), pd->papername);
}
pd->pagecentre = pagecentre;
pd->paperwidth = (int)(72 * pd->pagewidth);
pd->paperheight = (int)(72 * pd->pageheight);
if(!onefile) {
char *p = strrchr(pd->filename, '%');
if(!p)
warning(_("xfig(%s, onefile=FALSE) will only return the last plot"), pd->filename);
}
if(pd->landscape) {
double tmp;
tmp = pd->pagewidth;
pd->pagewidth = pd->pageheight;
pd->pageheight = tmp;
}
if(pd->width < 0.1 || pd->width > pd->pagewidth-0.5)
pd->width = pd->pagewidth-0.5;
if(pd->height < 0.1 || pd->height > pd->pageheight-0.5)
pd->height = pd->pageheight-0.5;
if(pagecentre) {
xoff = (pd->pagewidth - pd->width)/2.0;
yoff = (pd->pageheight - pd->height)/2.0;
} else {
xoff = yoff = 0.0;
}
if(pagecentre)
pd->ymax = (int)(1200.0 * pd->pageheight);
else
pd->ymax = (int)(1200.0 * pd->height);
pd->onefile = onefile;
pd->maxpointsize = (int)(72.0 * ((pd->pageheight > pd->pagewidth) ?
pd->pageheight : pd->pagewidth));
pd->pageno = 0;
/* Base Pointsize */
/* Nominal Character Sizes in Pixels */
/* Only right for 12 point font. */
/* Max pointsize suggested by Peter Dalgaard */
if(pointsize < 6.0) pointsize = 6.0;
if(pointsize > pd->maxpointsize) pointsize = pd->maxpointsize;
dd->startps = pointsize;
dd->startlty = LTY_SOLID;
dd->startfont = 1;
dd->startfill = pd->bg;
dd->startcol = pd->col;
dd->startgamma = 1;
/* Set graphics parameters that must be set by device driver. */
/* Page dimensions in points. */
dd->left = 72 * xoff; /* left */
dd->right = 72 * (xoff + pd->width); /* right */
dd->bottom = 72 * yoff; /* bottom */
dd->top = 72 * (yoff + pd->height); /* top */
dd->clipLeft = dd->left; dd->clipRight = dd->right;
dd->clipBottom = dd->bottom; dd->clipTop = dd->top;
dd->cra[0] = 0.9 * pointsize;
dd->cra[1] = 1.2 * pointsize;
/* Character Addressing Offsets */
/* These offsets should center a single */
/* plotting character over the plotting point. */
/* Pure guesswork and eyeballing ... */
dd->xCharOffset = 0.4900;
dd->yCharOffset = 0.3333;
dd->yLineBias = 0.2;
/* Inches per Raster Unit */
/* 1200 dpi */
dd->ipr[0] = 1.0/72.0;
dd->ipr[1] = 1.0/72.0;
dd->canClip = FALSE;
dd->canHAdj = 1; /* 0, 0.5, 1 */
dd->canChangeGamma = FALSE;
strncpy(pd->encoding, encoding, 49);
pd->encoding[49] = '\0';
XF_resetColors(pd);
/* Start the driver */
XFig_Open(dd, pd);
dd->close = XFig_Close;
dd->size = XFig_Size;
dd->newPage = XFig_NewPage;
dd->clip = XFig_Clip;
dd->text = XFig_Text;
dd->strWidth = XFig_StrWidth;
dd->metricInfo = XFig_MetricInfo;
dd->rect = XFig_Rect;
/* dd->path = XFig_Path;
dd->raster = XFig_Raster;
dd->cap = XFig_Cap; */
dd->circle = XFig_Circle;
dd->line = XFig_Line;
dd->polygon = XFig_Polygon;
dd->polyline = XFig_Polyline;
/* dd->locator = XFig_Locator;
dd->mode = XFig_Mode; */
dd->hasTextUTF8 = FALSE;
dd->useRotatedTextInContour = FALSE; /* maybe */
dd->haveTransparency = 1;
dd->haveTransparentBg = 1;
dd->haveRaster = 1;
dd->haveCapture = 1;
dd->haveLocator = 1;
dd->deviceSpecific = (void *) pd;
dd->displayListOn = FALSE;
return 1;
}
static void XFig_cleanup(pDevDesc dd, XFigDesc *pd)
{
freeDeviceFontList(pd->fonts);
freeDeviceEncList(pd->encodings);
pd->fonts = NULL;
pd->encodings = NULL;
free(dd);
free(pd);
}
static Rboolean XFig_Open(pDevDesc dd, XFigDesc *pd)
{
char buf[512], *tmp;
if (strlen(pd->filename) == 0) {
XFig_cleanup(dd, pd);
error(_("empty file name"));
return FALSE;
} else {
snprintf(buf, 512, pd->filename, pd->pageno + 1); /* page 1 to start */
pd->psfp = R_fopen(R_ExpandFileName(buf), "w");
}
if (!pd->psfp) {
XFig_cleanup(dd, pd);
error(_("cannot open file '%s'"), buf);
return FALSE;
}
/* assume tmpname is less than PATH_MAX */
tmp = R_tmpnam("Rxfig", R_TempDir);
strcpy(pd->tmpname, tmp);
free(tmp);
pd->tmpfp = R_fopen(pd->tmpname, "w");
if (!pd->tmpfp) {
fclose(pd->psfp);
char errbuf[strlen(pd->tmpname) + 1];
strcpy(errbuf, pd->tmpname);
XFig_cleanup(dd, pd);
error(_("cannot open file '%s'"), errbuf);
return FALSE;
}
XF_FileHeader(pd->psfp, pd->papername, pd->landscape, pd->onefile);
pd->pageno = 0;
return TRUE;
}
static void XFig_Clip(double x0, double x1, double y0, double y1,
pDevDesc dd)
{
}
static void XFig_Size(double *left, double *right,
double *bottom, double *top,
pDevDesc dd)
{
*left = dd->left;
*right = dd->right;
*bottom = dd->bottom;
*top = dd->top;
}
#define CHUNK 10000
static void XFig_NewPage(const pGEcontext gc,
pDevDesc dd)
{
char buf[PATH_MAX];
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
pd->pageno++;
if(pd->onefile) {
fprintf(pd->tmpfp, "#Start of page %d\n", pd->pageno);
if(pd->pageno > 1) XF_EndPage(pd->tmpfp);
} else {
char buffer[CHUNK];
size_t nread, res;
if(pd->pageno == 1) return;
XF_FileTrailer(pd->tmpfp);
fclose(pd->tmpfp);
pd->tmpfp = R_fopen(pd->tmpname, "r");
while(1) {
nread = fread(buffer, 1, CHUNK, pd->tmpfp);
if(nread > 0) {
res = fwrite(buffer, 1, nread, pd->psfp);
if(res != nread) error(_("write failed"));
}
if(nread < CHUNK) break;
}
fclose(pd->tmpfp);
fclose(pd->psfp);
snprintf(buf, PATH_MAX, pd->filename, pd->pageno);
pd->psfp = R_fopen(R_ExpandFileName(buf), "w");
pd->tmpfp = R_fopen(pd->tmpname, "w");
XF_FileHeader(pd->psfp, pd->papername, pd->landscape, pd->onefile);
XF_resetColors(pd);
}
XF_CheckAlpha(gc->fill, pd);
if(R_OPAQUE(gc->fill)) {
FILE *fp = pd->tmpfp;
int cbg = XF_SetColor(gc->fill, pd);
int ix0, iy0, ix1, iy1;
double x0 = 0.0, y0 = 0.0, x1 = 72.0 * pd->pagewidth,
y1 = 72.0 * pd->pageheight;
XFconvert(&x0, &y0, pd); XFconvert(&x1, &y1, pd);
ix0 = (int)x0; iy0 = (int)y0; ix1 = (int)x1; iy1 = (int)y1;
fprintf(fp, "2 2 "); /* Polyline */
fprintf(fp, "%d %d ", 0, 0); /* style, thickness */
fprintf(fp, "%d %d ", cbg, cbg); /* pen colour fill colour */
fprintf(fp, "200 0 20 4.0 0 0 -1 0 0 ");
fprintf(fp, "%d\n", 5); /* number of points */
fprintf(fp, "%d %d ", ix0, iy0);
fprintf(fp, "%d %d ", ix0, iy1);
fprintf(fp, "%d %d ", ix1, iy1);
fprintf(fp, "%d %d ", ix1, iy0);
fprintf(fp, "%d %d\n", ix0, iy0);
}
pd->warn_trans = FALSE;
}
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
static void XFig_Close(pDevDesc dd)
{
char buf[CHUNK];
size_t nread, res;
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
XF_FileTrailer(pd->tmpfp);
fclose(pd->tmpfp);
pd->tmpfp = R_fopen(pd->tmpname, "r");
while(1) {
nread = fread(buf, 1, CHUNK, pd->tmpfp);
if(nread > 0) {
res = fwrite(buf, 1, nread, pd->psfp);
if(res != nread) error(_("write failed"));
}
if(nread < CHUNK) break;
}
fclose(pd->tmpfp);
unlink(pd->tmpname);
fclose(pd->psfp);
free(pd);
}
static void XFig_Rect(double x0, double y0, double x1, double y1,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
FILE *fp = pd->tmpfp;
int ix0, iy0, ix1, iy1;
int cbg = XF_SetColor(gc->fill, pd), cfg = XF_SetColor(gc->col, pd), cpen,
dofill, lty = XF_SetLty(gc->lty), lwd = (int)(gc->lwd*0.833 + 0.5);
if(lty < 0) return;
XF_CheckAlpha(gc->col, pd);
XF_CheckAlpha(gc->fill, pd);
cpen = (R_OPAQUE(gc->col))? cfg: -1;
dofill = (R_OPAQUE(gc->fill))? 20: -1;
XFconvert(&x0, &y0, pd);
XFconvert(&x1, &y1, pd);
ix0 = (int)x0; iy0 = (int)y0; ix1 = (int)x1; iy1 = (int)y1;
fprintf(fp, "2 2 "); /* Polyline */
fprintf(fp, "%d %d ", lty, lwd>0?lwd:1); /* style, thickness */
fprintf(fp, "%d %d ", cpen, cbg); /* pen colour fill colour */
fprintf(fp, "100 0 %d ", dofill); /* depth, pen style, area fill */
fprintf(fp, "%.2f 0 0 -1 0 0 ", 4.0*lwd); /* style value, join .... */
fprintf(fp, "%d\n", 5); /* number of points */
fprintf(fp, " %d %d ", ix0, iy0);
fprintf(fp, " %d %d ", ix0, iy1);
fprintf(fp, " %d %d ", ix1, iy1);
fprintf(fp, " %d %d ", ix1, iy0);
fprintf(fp, " %d %d\n", ix0, iy0);
}
static void XFig_Circle(double x, double y, double r,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
FILE *fp = pd->tmpfp;
int ix, iy, ir;
int cbg = XF_SetColor(gc->fill, pd), cfg = XF_SetColor(gc->col, pd), cpen,
dofill, lty = XF_SetLty(gc->lty), lwd = (int)(gc->lwd*0.833 + 0.5);
if(lty < 0) return;
XF_CheckAlpha(gc->col, pd);
XF_CheckAlpha(gc->fill, pd);
cpen = (R_OPAQUE(gc->col))? cfg: -1;
dofill = (R_OPAQUE(gc->fill))? 20: -1;
XFconvert(&x, &y, pd);
ix = (int)x; iy = (int)y; ir = (int)(16.667*r);
fprintf(fp, "1 3 "); /* Circle + radius */
fprintf(fp, "%d %d ", lty, lwd>0?lwd:1); /* style, thickness */
fprintf(fp, "%d %d ", cpen, cbg); /* pen colour fill colour */
fprintf(fp, "100 0 %d ", dofill); /* depth, pen style, area fill */
fprintf(fp, "%.2f 1 0 ", 4.0*lwd); /* style value, direction, x, angle */
fprintf(fp, " %d %d %d %d %d %d %d %d \n",
ix, iy, ir, ir, ix, iy, ix+ir, iy);
}
static void XFig_Line(double x1, double y1, double x2, double y2,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
FILE *fp = pd->tmpfp;
int lty = XF_SetLty(gc->lty), lwd = (int)(gc->lwd*0.833 + 0.5);
if(lty < 0) return;
XFconvert(&x1, &y1, pd);
XFconvert(&x2, &y2, pd);
XF_CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col)) {
fprintf(fp, "2 1 "); /* Polyline */
fprintf(fp, "%d %d ", lty, lwd>0?lwd:1); /* style, thickness */
fprintf(fp, "%d %d ", XF_SetColor(gc->col, pd), 7);
/* pen colour fill colour */
fprintf(fp, "100 0 -1 "); /* depth, pen style, area fill */
fprintf(fp, "%.2f 0 0 -1 0 0 ", 4.0*lwd); /* style value, join .... */
fprintf(fp, "%d\n", 2); /* number of points */
fprintf(fp, "%d %d %d %d\n", (int)x1, (int)y1, (int)x2, (int)y2);
}
}
static void XFig_Polygon(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
FILE *fp = pd->tmpfp;
double xx, yy;
int i;
int cbg = XF_SetColor(gc->fill, pd), cfg = XF_SetColor(gc->col, pd), cpen,
dofill, lty = XF_SetLty(gc->lty), lwd = (int)(gc->lwd*0.833 + 0.5);
if(lty < 0) return;
XF_CheckAlpha(gc->col, pd);
XF_CheckAlpha(gc->fill, pd);
cpen = (R_OPAQUE(gc->col))? cfg: -1;
dofill = (R_OPAQUE(gc->fill))? 20: -1;
fprintf(fp, "2 3 "); /* Polyline */
fprintf(fp, "%d %d ", lty, lwd>0?lwd:1); /* style, thickness */
fprintf(fp, "%d %d ", cpen, cbg); /* pen colour fill colour */
fprintf(fp, "100 0 %d ", dofill); /* depth, pen style, area fill */
fprintf(fp, "%.2f 0 0 -1 0 0 ", 4.0*lwd); /* style value, join .... */
fprintf(fp, "%d\n", n+1); /* number of points */
/* close the path */
for(i = 0 ; i <= n ; i++) {
xx = x[i%n];
yy = y[i%n];
XFconvert(&xx, &yy, pd);
fprintf(fp, " %d %d\n", (int)xx, (int)yy);
}
}
static void XFig_Polyline(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc*) dd->deviceSpecific;
FILE *fp = pd->tmpfp;
double xx, yy;
int i, lty = XF_SetLty(gc->lty), lwd = (int)(gc->lwd*0.833 + 0.5);
XF_CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col) && lty >= 0) {
fprintf(fp, "2 1 "); /* Polyline */
fprintf(fp, "%d %d ", lty, lwd>0?lwd:1); /* style, thickness */
fprintf(fp, "%d %d ", XF_SetColor(gc->col, pd), 7); /* pen colour fill colour */
fprintf(fp, "100 0 -1 "); /* depth, pen style, area fill */
fprintf(fp, "%.2f 0 0 -1 0 0 ", 4.0*lwd); /* style value, join .... */
fprintf(fp, "%d\n", n); /* number of points */
for(i = 0 ; i < n ; i++) {
xx = x[i];
yy = y[i];
XFconvert(&xx, &yy, pd);
fprintf(fp, " %d %d\n", (int)xx, (int)yy);
}
}
}
static const int styles[4] = {0,2,1,3};
static void XFig_Text(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
FILE *fp = pd->tmpfp;
int fontnum, style = gc->fontface;
double size = floor(gc->cex * gc->ps + 0.5);
const char *str1 = str;
char *buf;
if(style < 1 || style > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"), style);
style = 1;
}
if(style == 5) fontnum = 32;
else fontnum = pd->fontnum + styles[style-1];
/*
* xfig -international hoge.fig
* mapping multibyte(EUC only) string Times{Romani,Bold} font Only
*/
if ( mbcslocale && style != 5 )
if (!strncmp("EUC", locale2charset(NULL), 3))
fontnum = ((style & 1) ^ 1 ) << 1 ;
XFconvert(&x, &y, pd);
XF_CheckAlpha(gc->col, pd);
if(R_OPAQUE(gc->col)) {
fprintf(fp, "4 %d ", (int)floor(2*hadj)); /* Text, how justified */
fprintf(fp, "%d 100 0 ", XF_SetColor(gc->col, pd));
/* color, depth, pen_style */
fprintf(fp, "%d %d %.4f %d ", pd->defaultfont?-1:fontnum, (int)size, rot * DEG2RAD,pd->textspecial?6:4);
/* font pointsize angle flags (Postscript font) */
fprintf(fp, "%d %d ", (int)(size*12),
(int)(16.667*XFig_StrWidth(str, gc, dd) +0.5));
fprintf(fp, "%d %d ", (int)x, (int)y);
if(strcmp(pd->encoding, "none") != 0) {
/* reencode the text */
void *cd;
const char *i_buf; char *o_buf;
size_t i_len, o_len, status;
size_t buflen = MB_LEN_MAX*strlen(str) + 1;
cd = (void*)Riconv_open(pd->encoding, "");
if(cd == (void*)-1) {
warning(_("unable to use encoding '%s'"), pd->encoding);
} else {
R_CheckStack2(buflen);
buf = (char *) alloca(buflen);
i_buf = (char *) str;
o_buf = buf;
i_len = strlen(str) + 1; /* including terminator */
o_len = buflen;
status = Riconv(cd, &i_buf, &i_len, &o_buf, &o_len);
Riconv_close(cd);
if(status == (size_t)-1)
warning(_("failed in text conversion to encoding '%s'"),
pd->encoding);
else str1 = buf;
}
}
XF_WriteString(fp, str1);
fprintf(fp, "\\001\n");
}
}
static double XFig_StrWidth(const char *str,
const pGEcontext gc,
pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
&(pd->fonts->family->fonts[face-1]->metrics),
FALSE, face, "latin1");
}
static void XFig_MetricInfo(int c,
const pGEcontext gc,
double* ascent, double* descent,
double* width, pDevDesc dd)
{
XFigDesc *pd = (XFigDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(face < 1 || face > 5) face = 1;
PostScriptMetricInfo(c, ascent, descent, width,
&(pd->fonts->family->fonts[face-1]->metrics),
face == 5, "");
*ascent = floor(gc->cex * gc->ps + 0.5) * *ascent;
*descent = floor(gc->cex * gc->ps + 0.5) * *descent;
*width = floor(gc->cex * gc->ps + 0.5) * *width;
}
/***********************************************************************
PDF driver also shares font handling
************************************************************************/
typedef struct {
rcolorPtr raster;
int w;
int h;
Rboolean interpolate;
int nobj; /* The object number when written out */
int nmaskobj; /* The mask object number */
} rasterImage;
typedef struct {
char filename[PATH_MAX];
int open_type;
char cmd[PATH_MAX];
char papername[64]; /* paper name */
int paperwidth; /* paper width in big points (1/72 in) */
int paperheight; /* paper height in big points */
int pageno; /* page number */
int fileno; /* file number */
int maxpointsize;
double width; /* plot width in inches */
double height; /* plot height in inches */
double pagewidth; /* page width in inches */
double pageheight; /* page height in inches */
Rboolean pagecentre; /* centre image on page? */
Rboolean onefile; /* one file or one file per page? */
FILE *pdffp; /* output file */
FILE *mainfp;
FILE *pipefp;
/* This group of variables track the current device status.
* They should only be set by routines that emit PDF. */
struct {
double lwd; /* line width */
int lty; /* line type */
R_GE_lineend lend;
R_GE_linejoin ljoin;
double lmitre;
int fontsize; /* font size in points */
rcolor col; /* color */
rcolor fill; /* fill color */
rcolor bg; /* color */
int srgb_fg, srgb_bg; /* Are stroke and fill colorspaces set? */
} current;
/*
* This is a record of the alpha transparency levels used during
* drawing to the device.
* Only allow 256 different alpha levels
* (because R uses 8-bit alpha channel).
* "alphas" is a record of alphas used so far (unused set to -1)
* There are separate alpha levels for stroking and filling
* (i.e., col and fill)
*/
short colAlpha[256];
short fillAlpha[256];
Rboolean usedAlpha;
/*
* What version of PDF are we trying to work with?
* This is used (so far) for implementing transparency and CID fonts
* Alphas are only used if version is at least 1.4
*/
int versionMajor;
int versionMinor;
int nobjs; /* number of objects */
int *pos; /* object positions */
int max_nobjs; /* current allocation size */
int *pageobj; /* page object numbers */
int pagemax;
int startstream; /* position of start of current stream */
Rboolean inText;
char title[1024];
char colormodel[30];
Rboolean dingbats, useKern;
Rboolean fillOddEven; /* polygon fill mode */
Rboolean useCompression;
char tmpname[PATH_MAX]; /* used before compression */
/*
* Fonts and encodings used on the device
*/
type1fontlist fonts;
cidfontlist cidfonts;
encodinglist encodings;
/*
* These next two just record the default device font
*/
type1fontfamily defaultFont;
cidfontfamily defaultCIDFont;
/* Record if fonts are used */
Rboolean fontUsed[100];
/* Raster images used on the device */
rasterImage *rasters;
int numRasters; /* number in use */
int writtenRasters; /* number written out */
int maxRasters; /* size of array allocated */
/* Soft masks for raster images */
int *masks;
int numMasks;
/* Is the device "offline" (does not write out to a file) */
Rboolean offline;
}
PDFDesc;
/* Macro for driver actions to check for "offline" device and bail out */
#define PDF_checkOffline() if (pd->offline) return
/* Device Driver Actions */
static Rboolean PDF_Open(pDevDesc, PDFDesc*);
static void PDF_Circle(double x, double y, double r,
const pGEcontext gc,
pDevDesc dd);
static void PDF_Clip(double x0, double x1, double y0, double y1,
pDevDesc dd);
static void PDF_Close(pDevDesc dd);
static void PDF_Line(double x1, double y1, double x2, double y2,
const pGEcontext gc,
pDevDesc dd);
void PDF_MetricInfo(int c,
const pGEcontext gc,
double* ascent, double* descent,
double* width, pDevDesc dd);
static void PDF_NewPage(const pGEcontext gc, pDevDesc dd);
static void PDF_Polygon(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd);
static void PDF_Polyline(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd);
static void PDF_Rect(double x0, double y0, double x1, double y1,
const pGEcontext gc,
pDevDesc dd);
static void PDF_Path(double *x, double *y,
int npoly, int *nper,
Rboolean winding,
const pGEcontext gc,
pDevDesc dd);
static void PDF_Raster(unsigned int *raster, int w, int h,
double x, double y, double width, double height,
double rot, Rboolean interpolate,
const pGEcontext gc, pDevDesc dd);
static void PDF_Size(double *left, double *right,
double *bottom, double *top,
pDevDesc dd);
double PDF_StrWidth(const char *str,
const pGEcontext gc,
pDevDesc dd);
static void PDF_Text(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd);
static double PDF_StrWidthUTF8(const char *str,
const pGEcontext gc,
pDevDesc dd);
static void PDF_TextUTF8(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd);
/***********************************************************************
* Some stuff for recording raster images
*/
/* Detect an image by non-NULL rasters[] */
static rasterImage* initRasterArray(int numRasters)
{
int i;
/* why not use calloc? */
rasterImage* rasters = malloc(numRasters*sizeof(rasterImage));
if (rasters) {
for (i = 0; i < numRasters; i++) {
rasters[i].raster = NULL;
}
} /* else error thrown in PDFDeviceDriver */
return rasters;
}
/* Add a raster (by making a copy)
* Return value indicates whether the image is semi-transparent
*/
static int addRaster(rcolorPtr raster, int w, int h,
Rboolean interpolate, PDFDesc *pd)
{
int i, alpha = 0;
rcolorPtr newRaster;
if (pd->numRasters == pd->maxRasters) {
int new = 2*pd->maxRasters;
void *tmp;
/* Do it this way so previous pointer is retained if it fails */
tmp = realloc(pd->masks, new*sizeof(int));
if(!tmp) error(_("failed to increase 'maxRaster'"));
pd->masks = tmp;
tmp = realloc(pd->rasters, new*sizeof(rasterImage));
if(!tmp) error(_("failed to increase 'maxRaster'"));
pd->rasters = tmp;
for (i = pd->maxRasters; i < new; i++) {
pd->rasters[i].raster = NULL;
pd->masks[i] = -1;
}
pd->maxRasters = new;
}
newRaster = malloc(w*h*sizeof(rcolor));
if (!newRaster)
error(_("unable to allocate raster image"));
for (i = 0; i < w*h; i++) {
newRaster[i] = raster[i];
if (!alpha && R_ALPHA(raster[i]) < 255) alpha = 1;
}
pd->rasters[pd->numRasters].raster = newRaster;
pd->rasters[pd->numRasters].w = w;
pd->rasters[pd->numRasters].h = h;
pd->rasters[pd->numRasters].interpolate = interpolate;
pd->rasters[pd->numRasters].nobj = -1; /* not yet written out */
pd->rasters[pd->numRasters].nmaskobj = -1; /* not yet written out */
/* If any of the pixels are not opaque, we need to add
* a mask as well */
if (alpha)
pd->masks[pd->numRasters] = pd->numMasks++;
pd->numRasters++;
return alpha;
}
static void killRasterArray(rasterImage *rasters, int numRasters) {
int i;
for (i = 0; i < numRasters; i++)
if (rasters[i].raster != NULL) free(rasters[i].raster);
}
/* Detect a mask by masks[] >= 0 */
static int* initMaskArray(int numRasters) {
int i;
int* masks = malloc(numRasters*sizeof(int));
if (masks) {
for (i = 0; i < numRasters; i++) masks[i] = -1;
} /* else error thrown in PDFDeviceDriver */
return masks;
}
static void writeRasterXObject(rasterImage raster, int n,
int mask, int maskObj, PDFDesc *pd)
{
Bytef *buf, *buf2, *p;
uLong inlen;
if (streql(pd->colormodel, "gray")) {
inlen = raster.w * raster.h;
p = buf = Calloc(inlen, Bytef);
for(int i = 0; i < raster.w * raster.h; i++) {
double r = 0.213 * R_RED(raster.raster[i])
+ 0.715 * R_GREEN(raster.raster[i])
+ 0.072 * R_BLUE(raster.raster[i]);
*p++ = (Bytef)(r + 0.49);
}
} else {
inlen = 3 * raster.w * raster.h;
p = buf = Calloc(inlen, Bytef);
for(int i = 0; i < raster.w * raster.h; i++) {
*p++ = R_RED(raster.raster[i]);
*p++ = R_GREEN(raster.raster[i]);
*p++ = R_BLUE(raster.raster[i]);
}
}
uLong outlen = inlen;
if (pd->useCompression) {
outlen = (int)(1.001*inlen + 20);
buf2 = Calloc(outlen, Bytef);
int res = compress(buf2, &outlen, buf, inlen);
if(res != Z_OK) error("internal error %d in writeRasterXObject", res);
Free(buf);
buf = buf2;
}
fprintf(pd->pdffp, "%d 0 obj <<\n", n);
fprintf(pd->pdffp, " /Type /XObject\n");
fprintf(pd->pdffp, " /Subtype /Image\n");
fprintf(pd->pdffp, " /Width %d\n", raster.w);
fprintf(pd->pdffp, " /Height %d\n", raster.h);
if (streql(pd->colormodel, "gray"))
fprintf(pd->pdffp, " /ColorSpace /DeviceGray\n");
else if (streql(pd->colormodel, "srgb"))
fprintf(pd->pdffp, " /ColorSpace 5 0 R\n"); /* sRGB */
else
fprintf(pd->pdffp, " /ColorSpace /DeviceRGB\n");
fprintf(pd->pdffp, " /BitsPerComponent 8\n");
fprintf(pd->pdffp, " /Length %u\n", (unsigned)
(pd->useCompression ? outlen : 2 * outlen + 1));
if (raster.interpolate)
fprintf(pd->pdffp, " /Interpolate true\n");
if (pd->useCompression)
fprintf(pd->pdffp, " /Filter /FlateDecode\n");
else
fprintf(pd->pdffp, " /Filter /ASCIIHexDecode\n");
if (mask >= 0)
fprintf(pd->pdffp, " /SMask %d 0 R\n", maskObj);
fprintf(pd->pdffp, " >>\nstream\n");
if (pd->useCompression) {
size_t res = fwrite(buf, 1, outlen, pd->pdffp);
if(res != outlen) error(_("write failed"));
} else {
for(int i = 0; i < outlen; i++)
fprintf(pd->pdffp, "%02x", buf[i]);
fprintf(pd->pdffp, ">\n");
}
Free(buf);
fprintf(pd->pdffp, "endstream\nendobj\n");
}
static void writeMaskXObject(rasterImage raster, int n, PDFDesc *pd)
{
Bytef *buf, *buf2, *p;
uLong inlen = raster.w * raster.h, outlen = inlen;
p = buf = Calloc(outlen, Bytef);
for(int i = 0; i < raster.w * raster.h; i++)
*p++ = R_ALPHA(raster.raster[i]);
if (pd->useCompression) {
outlen = (uLong)(1.001*inlen + 20);
buf2 = Calloc(outlen, Bytef);
int res = compress(buf2, &outlen, buf, inlen);
if(res != Z_OK) error("internal error %d in writeRasterXObject", res);
Free(buf);
buf = buf2;
}
fprintf(pd->pdffp, "%d 0 obj <<\n", n);
fprintf(pd->pdffp, " /Type /XObject\n");
fprintf(pd->pdffp, " /Subtype /Image\n");
fprintf(pd->pdffp, " /Width %d\n", raster.w);
fprintf(pd->pdffp, " /Height %d\n", raster.h);
/* This is not a mask but a 'soft mask' */
fprintf(pd->pdffp, " /ColorSpace /DeviceGray\n");
fprintf(pd->pdffp, " /BitsPerComponent 8\n");
fprintf(pd->pdffp, " /Length %u\n", (unsigned)
(pd->useCompression ? outlen : 2 * outlen + 1));
if (raster.interpolate)
fprintf(pd->pdffp, " /Interpolate true\n");
if (pd->useCompression)
fprintf(pd->pdffp, " /Filter /FlateDecode\n");
else
fprintf(pd->pdffp, " /Filter /ASCIIHexDecode\n");
fprintf(pd->pdffp, " >>\nstream\n");
if (pd->useCompression) {
size_t res = fwrite(buf, 1, outlen, pd->pdffp);
if(res != outlen) error(_("write failed"));
} else {
for(int i = 0; i < outlen; i++)
fprintf(pd->pdffp, "%02x", buf[i]);
fprintf(pd->pdffp, ">\n");
}
Free(buf);
fprintf(pd->pdffp, "endstream\nendobj\n");
}
/***********************************************************************
* Some stuff for fonts
*/
/*
* Add a graphics engine font family to the list of fonts used on a
* PDF device ...
*
* ... AND add the font encoding to the list of encodings used on the
* device (if necessary)
*/
/*
* Differs from addDeviceFont (used in PostScript device)
* because we do not need to immediately write font
* information to file. In PDF, the font information is
* all written at the end as part of the file footer.
*/
static Rboolean addPDFDeviceCIDfont(cidfontfamily family,
PDFDesc *pd,
int *fontIndex)
{
Rboolean result = FALSE;
cidfontlist fontlist = addDeviceCIDFont(family, pd->cidfonts, fontIndex);
if (fontlist) {
pd->cidfonts = fontlist;
result = TRUE;
}
return result;
}
static Rboolean addPDFDevicefont(type1fontfamily family,
PDFDesc *pd,
int *fontIndex)
{
Rboolean result = FALSE;
type1fontlist fontlist = addDeviceFont(family, pd->fonts, fontIndex);
if (fontlist) {
int dontcare;
encodinginfo encoding =
findDeviceEncoding(family->encoding->encpath,
pd->encodings, &dontcare);
if (encoding) {
pd->fonts = fontlist;
result = TRUE;
} else {
/*
* The encoding should have been loaded when the font was loaded
*/
encoding = findEncoding(family->encoding->encpath,
pd->encodings, TRUE);
if (!encoding) {
warning(_("corrupt loaded encodings; font not added"));
/* NOTE: in fact the font was added */
} else {
encodinglist enclist = addDeviceEncoding(encoding,
pd->encodings);
if (enclist) {
pd->fonts = fontlist;
pd->encodings = enclist;
result = TRUE;
} else
warning(_("failed to record device encoding; font not added"));
/* NOTE: in fact the font was added */
}
}
}
return result;
}
static void PDFcleanup(int stage, PDFDesc *pd) {
switch (stage) {
case 6: /* Allocated masks */
free(pd->masks);
case 5: /* Allocated rasters */
free(pd->rasters);
case 4: /* Allocated fonts */
freeDeviceFontList(pd->fonts);
freeDeviceCIDFontList(pd->cidfonts);
freeDeviceEncList(pd->encodings);
pd->fonts = NULL;
pd->cidfonts = NULL;
pd->encodings = NULL;
case 3: /* Allocated pageobj */
free(pd->pageobj);
case 2: /* Allocated pos */
free(pd->pos);
case 1: /* Allocated PDFDesc */
free(pd);
}
}
Rboolean
PDFDeviceDriver(pDevDesc dd, const char *file, const char *paper,
const char *family, const char **afmpaths,
const char *encoding,
const char *bg, const char *fg, double width, double height,
double ps, int onefile, int pagecentre,
const char *title, SEXP fonts,
int versionMajor, int versionMinor,
const char *colormodel, int dingbats, int useKern,
Rboolean fillOddEven, Rboolean useCompression)
{
/* If we need to bail out with some sort of "error" */
/* then we must free(dd) */
int i, gotFont;
double xoff = 0.0, yoff = 0.0, pointsize;
rcolor setbg, setfg;
encodinginfo enc;
encodinglist enclist;
type1fontfamily font;
cidfontfamily cidfont = NULL;
PDFDesc *pd;
/* Check and extract the device parameters */
/* 'file' could be NULL */
if(file && strlen(file) > PATH_MAX - 1) {
/* not yet created PDFcleanup(0, pd); */
free(dd);
error(_("filename too long in %s()"), "pdf");
}
/* allocate new PDF device description */
if (!(pd = (PDFDesc *) malloc(sizeof(PDFDesc)))) {
free(dd);
error(_("memory allocation problem in %s()"), "pdf");
}
/* from here on, if need to bail out with "error", must also
free(pd) */
pd->versionMajor = versionMajor;
pd->versionMinor = versionMinor;
/* Precaution: should be initialized in PDF_newpage, but package
PerformanceAnalytics manages to call PDF_Clip without. */
pd->inText = FALSE;
/* This is checked at the start of every page. We typically have
three objects per page plus one or two for each raster image,
so this is an ample initial allocation.
*/
pd->max_nobjs = 2000;
pd->pos = (int *) calloc(pd->max_nobjs, sizeof(int));
if(!pd->pos) {
PDFcleanup(1, pd);
free(dd);
error("cannot allocate pd->pos");
}
/* This one is dynamic: initial allocation */
pd->pagemax = 100;
pd->pageobj = (int *) calloc(pd->pagemax, sizeof(int));
if(!pd->pageobj) {
PDFcleanup(2, pd);
free(dd);
error("cannot allocate pd->pageobj");
}
/* initialize PDF device description */
/* 'file' could be NULL */
if (file)
strcpy(pd->filename, file);
else
strcpy(pd->filename, "nullPDF");
strcpy(pd->papername, paper);
strncpy(pd->title, title, 1023);
pd->title[1023] = '\0';
memset(pd->fontUsed, 0, 100*sizeof(Rboolean));
if (streql(colormodel, "grey")) strcpy(pd->colormodel, "gray");
else {strncpy(pd->colormodel, colormodel, 29); pd->colormodel[29] = '\0';}
pd->dingbats = (dingbats != 0);
pd->useKern = (useKern != 0);
pd->fillOddEven = fillOddEven;
pd->useCompression = useCompression;
if(useCompression && pd->versionMajor == 1 && pd->versionMinor < 2) {
pd->versionMinor = 2;
warning(_("increasing the PDF version to 1.2"));
}
pd->width = width;
pd->height = height;
if (file)
pd->offline = FALSE;
else
pd->offline = TRUE;
if(strlen(encoding) > PATH_MAX - 1) {
PDFcleanup(3, pd);
free(dd);
error(_("encoding path is too long in %s()"), "pdf");
}
/*
* Load the default encoding AS THE FIRST ENCODING FOR THIS DEVICE.
*
* encpath MUST NOT BE "default"
*/
pd->encodings = NULL;
if (!(enc = findEncoding(encoding, pd->encodings, TRUE)))
enc = addEncoding(encoding, 1);
if (enc && (enclist = addDeviceEncoding(enc,
pd->encodings))) {
pd->encodings = enclist;
} else {
PDFcleanup(3, pd);
free(dd);
error(_("failed to load default encoding"));
}
/*****************************
* Load fonts
*****************************/
pd->fonts = NULL;
pd->cidfonts = NULL;
gotFont = 0;
/*
* If user specified afms then assume the font hasn't been loaded
* Could lead to redundant extra loading of a font, but not often(?)
*/
if (!strcmp(family, "User")) {
font = addDefaultFontFromAFMs(encoding, afmpaths, 0, pd->encodings);
} else {
/*
* Otherwise, family is a device-independent font family.
* One of the elements of pdfFonts().
* NOTE this is the first font loaded on this device!
*/
/*
* Check first whether this font has been loaded
* in this R session
*/
font = findLoadedFont(family, encoding, TRUE);
cidfont = findLoadedCIDFont(family, TRUE);
if (!(font || cidfont)) {
/*
* If the font has not been loaded yet, load it.
*
* The family SHOULD be in the font database to get this far.
* (checked at R level in postscript() in postscript.R)
*/
if (isType1Font(family, PDFFonts, NULL)) {
font = addFont(family, TRUE, pd->encodings);
} else if (isCIDFont(family, PDFFonts, NULL)) {
cidfont = addCIDFont(family, TRUE);
} else {
/*
* Should NOT get here.
*/
error(_("invalid font type"));
}
}
}
if (font || cidfont) {
/*
* At this point the font is loaded, so add it to the
* device's list of fonts.
*/
if (!strcmp(family, "User") ||
isType1Font(family, PDFFonts, NULL)) {
addPDFDevicefont(font, pd, &gotFont);
/* NOTE: should check result, encoding may not have been found */
pd->defaultFont = pd->fonts->family;
pd->defaultCIDFont = NULL;
} else /* (isCIDFont(family, PDFFonts)) */ {
addPDFDeviceCIDfont(cidfont, pd, &gotFont);
pd->defaultFont = NULL;
pd->defaultCIDFont = pd->cidfonts->cidfamily;
}
}
if (!gotFont) {
PDFcleanup(4, pd);
free(dd);
error(_("failed to initialise default PDF font"));
}
/*
* Load the font names sent in via the fonts arg
* NOTE that these are the font names specified at the
* R-level, NOT the translated font names.
*/
if (!isNull(fonts)) {
int i, dontcare, gotFonts = 0, nfonts = LENGTH(fonts);
for (i = 0; i < nfonts; i++) {
int index, cidindex;
const char *name = CHAR(STRING_ELT(fonts, i));
if (findDeviceFont(name, pd->fonts, &index) ||
findDeviceCIDFont(name, pd->cidfonts, &cidindex))
gotFonts++;
else {
/*
* Check whether the font is loaded and, if not,
* load it.
*/
font = findLoadedFont(name, encoding, TRUE);
cidfont = findLoadedCIDFont(name, TRUE);
if (!(font || cidfont)) {
if (isType1Font(name, PDFFonts, NULL)) {
font = addFont(name, TRUE, pd->encodings);
} else if (isCIDFont(name, PDFFonts, NULL)) {
cidfont = addCIDFont(name, TRUE);
} else {
/*
* Should NOT get here.
*/
error(_("invalid font type"));
}
}
/*
* Once the font is loaded, add it to the device's
* list of fonts.
*/
if (font || cidfont) {
if (isType1Font(name, PDFFonts, NULL)) {
if (addPDFDevicefont(font, pd, &dontcare)) {
gotFonts++;
}
} else /* (isCIDFont(family, PDFFonts)) */ {
if (addPDFDeviceCIDfont(cidfont, pd, &dontcare)) {
gotFonts++;
}
}
}
}
}
if (gotFonts < nfonts) {
PDFcleanup(4, pd);
free(dd);
error(_("failed to initialise additional PDF fonts"));
}
}
/*****************************
* END Load fonts
*****************************/
pd->numRasters = pd->writtenRasters = 0;
pd->maxRasters = 64; /* dynamic */
pd->rasters = initRasterArray(pd->maxRasters);
if (!pd->rasters) {
PDFcleanup(4, pd);
free(dd);
error(_("failed to allocate rasters"));
}
pd->numMasks = 0;
pd->masks = initMaskArray(pd->maxRasters);
if (!pd->masks) {
PDFcleanup(5, pd);
free(dd);
error(_("failed to allocate masks"));
}
setbg = R_GE_str2col(bg);
setfg = R_GE_str2col(fg);
/*
* Initialise all alphas to -1
*/
pd->usedAlpha = FALSE;
for (i = 0; i < 256; i++) {
pd->colAlpha[i] = -1;
pd->fillAlpha[i] = -1;
}
/* Deal with paper and plot size and orientation */
if(!strcmp(pd->papername, "Default") ||
!strcmp(pd->papername, "default")) {
SEXP s = STRING_ELT(GetOption1(install("papersize")), 0);
if(s != NA_STRING && strlen(CHAR(s)) > 0)
strcpy(pd->papername, CHAR(s));
else strcpy(pd->papername, "a4");
}
if(!strcmp(pd->papername, "A4") ||
!strcmp(pd->papername, "a4")) {
pd->pagewidth = 21.0 / 2.54;
pd->pageheight = 29.7 /2.54;
}
else if(!strcmp(pd->papername, "A4r") ||
!strcmp(pd->papername, "a4r")) {
pd->pageheight = 21.0 / 2.54;
pd->pagewidth = 29.7 /2.54;
}
else if(!strcmp(pd->papername, "Letter") ||
!strcmp(pd->papername, "letter") ||
!strcmp(pd->papername, "US") ||
!strcmp(pd->papername, "us")) {
pd->pagewidth = 8.5;
pd->pageheight = 11.0;
}
else if(!strcmp(pd->papername, "USr") ||
!strcmp(pd->papername, "usr")) {
pd->pageheight = 8.5;
pd->pagewidth = 11.0;
}
else if(!strcmp(pd->papername, "Legal") ||
!strcmp(pd->papername, "legal")) {
pd->pagewidth = 8.5;
pd->pageheight = 14.0;
}
else if(!strcmp(pd->papername, "Executive") ||
!strcmp(pd->papername, "executive")) {
pd->pagewidth = 7.25;
pd->pageheight = 10.5;
}
else if(!strcmp(pd->papername, "special")) {
pd->pagewidth = width;
pd->pageheight = height;
}
else {
char errbuf[strlen(pd->papername) + 1];
strcpy(errbuf, pd->papername);
PDFcleanup(6, pd);
free(dd);
error(_("invalid paper type '%s' (pdf)"), errbuf);
}
pd->pagecentre = pagecentre;
pd->paperwidth = (int)(72 * pd->pagewidth);
pd->paperheight = (int)(72 * pd->pageheight);
if(strcmp(pd->papername, "special"))
{
if(pd->width < 0.1 || pd->width > pd->pagewidth-0.5)
pd->width = pd->pagewidth-0.5;
if(pd->height < 0.1 || pd->height > pd->pageheight-0.5)
pd->height = pd->pageheight-0.5;
}
if(pagecentre)
{
xoff = (pd->pagewidth - pd->width)/2.0;
yoff = (pd->pageheight - pd->height)/2.0;
} else {
xoff = yoff = 0.0;
}
pointsize = floor(ps);
if(R_TRANSPARENT(setbg) && R_TRANSPARENT(setfg)) {
PDFcleanup(6, pd);
free(dd);
error(_("invalid foreground/background color (pdf)"));
}
pd->onefile = onefile;
pd->maxpointsize = (int)(72.0 * ((pd->pageheight > pd->pagewidth) ?
pd->pageheight : pd->pagewidth));
pd->pageno = pd->fileno = 0;
/* Base Pointsize */
/* Nominal Character Sizes in Pixels */
/* Only right for 12 point font. */
/* Max pointsize suggested by Peter Dalgaard */
if(pointsize < 6.0) pointsize = 6.0;
if(pointsize > pd->maxpointsize) pointsize = pd->maxpointsize;
dd->startps = pointsize;
dd->startlty = 0;
dd->startfont = 1;
dd->startfill = setbg;
dd->startcol = setfg;
dd->startgamma = 1;
/* Set graphics parameters that must be set by device driver. */
/* Page dimensions in points. */
dd->left = 72 * xoff; /* left */
dd->right = 72 * (xoff + pd->width); /* right */
dd->bottom = 72 * yoff; /* bottom */
dd->top = 72 * (yoff + pd->height); /* top */
dd->clipLeft = dd->left; dd->clipRight = dd->right;
dd->clipBottom = dd->bottom; dd->clipTop = dd->top;
dd->cra[0] = 0.9 * pointsize;
dd->cra[1] = 1.2 * pointsize;
/* Character Addressing Offsets */
/* These offsets should center a single */
/* plotting character over the plotting point. */
/* Pure guesswork and eyeballing ... */
dd->xCharOffset = 0.4900;
dd->yCharOffset = 0.3333;
dd->yLineBias = 0.2;
/* Inches per Raster Unit */
/* 1200 dpi */
dd->ipr[0] = 1.0/72.0;
dd->ipr[1] = 1.0/72.0;
dd->canClip = TRUE;
dd->canHAdj = 0;
dd->canChangeGamma = FALSE;
/* Start the driver */
PDF_Open(dd, pd); /* errors on failure */
dd->close = PDF_Close;
dd->size = PDF_Size;
dd->newPage = PDF_NewPage;
dd->clip = PDF_Clip;
dd->text = PDF_Text;
dd->strWidth = PDF_StrWidth;
dd->metricInfo = PDF_MetricInfo;
dd->rect = PDF_Rect;
dd->path = PDF_Path;
dd->raster = PDF_Raster;
dd->circle = PDF_Circle;
dd->line = PDF_Line;
dd->polygon = PDF_Polygon;
dd->polyline = PDF_Polyline;
/* dd->locator = PDF_Locator;
dd->mode = PDF_Mode; */
dd->hasTextUTF8 = TRUE;
dd->textUTF8 = PDF_TextUTF8;
dd->strWidthUTF8 = PDF_StrWidthUTF8;
dd->useRotatedTextInContour = TRUE;
dd->haveTransparency = 2;
dd->haveTransparentBg = 3;
dd->haveRaster = 2;
dd->deviceSpecific = (void *) pd;
dd->displayListOn = FALSE;
return TRUE;
}
/* Called at the start of a page and when clipping is reset */
static void PDF_Invalidate(pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
pd->current.fontsize = -1;
pd->current.lwd = -1;
pd->current.lty = -1;
pd->current.lend = 0;
pd->current.ljoin = 0;
pd->current.lmitre = 0;
/* page starts with black as the default fill and stroke colours */
pd->current.col = INVALID_COL;
pd->current.fill = INVALID_COL;
pd->current.bg = INVALID_COL;
pd->current.srgb_fg = pd->current.srgb_bg = 0;
}
/*
* Search through the alphas used so far and return
* existing index if there is one.
* Otherwise, add alpha to the list and return new index
*/
static int alphaIndex(int alpha, short *alphas) {
int i, found = 0;
for (i = 0; i < 256 && !found; i++) {
if (alphas[i] < 0) {
alphas[i] = (short) alpha;
found = 1;
}
else if (alpha == alphas[i])
found = 1;
}
if (!found)
error(_("invalid 'alpha' value in PDF"));
return i;
}
/*
* colAlpha graphics state parameter dictionaries are named
* /GS1 to /GS256
* fillAlpha graphics state parameter dictionaries are named
* /GS257 to /GS512
*/
static int colAlphaIndex(int alpha, PDFDesc *pd) {
return alphaIndex(alpha, pd->colAlpha);
}
static int fillAlphaIndex(int alpha, PDFDesc *pd) {
return alphaIndex(alpha, pd->fillAlpha) + 256;
}
/*
* Does the version support alpha transparency?
* As from R 2.4.0 bump the version number so it does.
*/
static void alphaVersion(PDFDesc *pd) {
if(pd->versionMajor == 1 && pd->versionMinor < 4) {
pd->versionMinor = 4;
warning(_("increasing the PDF version to 1.4"));
}
pd->usedAlpha = TRUE;
}
/*
* Do we need to bother with semi-transparency?
*/
static int semiTransparent(int col)
{
return !(R_OPAQUE(col) || R_TRANSPARENT(col));
}
static void PDF_SetLineColor(int color, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
if(color != pd->current.col) {
unsigned int alpha = R_ALPHA(color);
if (0 < alpha && alpha < 255) alphaVersion(pd);
if (pd->usedAlpha) {
/*
* Apply graphics state parameter dictionary
* to set alpha
*/
fprintf(pd->pdffp, "/GS%i gs\n", colAlphaIndex(alpha, pd));
}
if(streql(pd->colormodel, "gray")) {
double r = R_RED(color)/255.0, g = R_GREEN(color)/255.0,
b = R_BLUE(color)/255.0;
/* weights from C-9 of
http://www.faqs.org/faqs/graphics/colorspace-faq/
Those from C-11 might be more appropriate.
*/
fprintf(pd->pdffp, "%.3f G\n", (0.213*r+0.715*g+0.072*b));
} else if(streql(pd->colormodel, "cmyk")) {
double r = R_RED(color)/255.0, g = R_GREEN(color)/255.0,
b = R_BLUE(color)/255.0;
double c = 1.0-r, m = 1.0-g, y = 1.0-b, k = c;
k = fmin2(k, m);
k = fmin2(k, y);
if(k == 1.0) c = m = y = 0.0;
else { c = (c-k)/(1-k); m = (m-k)/(1-k); y = (y-k)/(1-k); }
fprintf(pd->pdffp, "%.3f %.3f %.3f %.3f K\n", c, m, y, k);
} else if(streql(pd->colormodel, "rgb")) {
fprintf(pd->pdffp, "%.3f %.3f %.3f RG\n",
R_RED(color)/255.0,
R_GREEN(color)/255.0,
R_BLUE(color)/255.0);
} else {
if (!streql(pd->colormodel, "srgb"))
warning(_("unknown 'colormodel', using 'srgb'"));
if (!pd->current.srgb_bg) {
fprintf(pd->pdffp, "/sRGB CS\n");
pd->current.srgb_bg = 1;
}
fprintf(pd->pdffp, "%.3f %.3f %.3f SCN\n",
R_RED(color)/255.0,
R_GREEN(color)/255.0,
R_BLUE(color)/255.0);
}
pd->current.col = color;
}
}
static void PDF_SetFill(int color, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
if(color != pd->current.fill) {
unsigned int alpha = R_ALPHA(color);
if (0 < alpha && alpha < 255) alphaVersion(pd);
if (pd->usedAlpha) {
/*
* Apply graphics state parameter dictionary
* to set alpha
*/
fprintf(pd->pdffp, "/GS%i gs\n", fillAlphaIndex(alpha, pd));
}
if(streql(pd->colormodel, "gray")) {
double r = R_RED(color)/255.0, g = R_GREEN(color)/255.0,
b = R_BLUE(color)/255.0;
fprintf(pd->pdffp, "%.3f g\n", (0.213*r+0.715*g+0.072*b));
} else if(streql(pd->colormodel, "cmyk")) {
double r = R_RED(color)/255.0, g = R_GREEN(color)/255.0,
b = R_BLUE(color)/255.0;
double c = 1.0-r, m = 1.0-g, y = 1.0-b, k = c;
k = fmin2(k, m);
k = fmin2(k, y);
if(k == 1.0) c = m = y = 0.0;
else { c = (c-k)/(1-k); m = (m-k)/(1-k); y = (y-k)/(1-k); }
fprintf(pd->pdffp, "%.3f %.3f %.3f %.3f k\n", c, m, y, k);
} else if(streql(pd->colormodel, "rgb")) {
fprintf(pd->pdffp, "%.3f %.3f %.3f rg\n",
R_RED(color)/255.0,
R_GREEN(color)/255.0,
R_BLUE(color)/255.0);
} else {
if (!streql(pd->colormodel, "srgb"))
warning(_("unknown 'colormodel', using 'srgb'"));
if (!pd->current.srgb_fg) {
fprintf(pd->pdffp, "/sRGB cs\n");
pd->current.srgb_fg = 1;
}
fprintf(pd->pdffp, "%.3f %.3f %.3f scn\n",
R_RED(color)/255.0,
R_GREEN(color)/255.0,
R_BLUE(color)/255.0);
}
pd->current.fill = color;
}
}
static void PDFSetLineEnd(FILE *fp, R_GE_lineend lend)
{
int lineend = 1; /* -Wall */
switch (lend) {
case GE_ROUND_CAP:
lineend = 1;
break;
case GE_BUTT_CAP:
lineend = 0;
break;
case GE_SQUARE_CAP:
lineend = 2;
break;
default:
error(_("invalid line end"));
}
fprintf(fp, "%1d J\n", lineend);
}
static void PDFSetLineJoin(FILE *fp, R_GE_linejoin ljoin)
{
int linejoin = 1; /* -Wall */
switch (ljoin) {
case GE_ROUND_JOIN:
linejoin = 1;
break;
case GE_MITRE_JOIN:
linejoin = 0;
break;
case GE_BEVEL_JOIN:
linejoin = 2;
break;
default:
error(_("invalid line join"));
}
fprintf(fp, "%1d j\n", linejoin);
}
/* Note that the line texture is scaled by the line width.*/
static void PDFSetLineTexture(FILE *fp, const char *dashlist, int nlty,
double lwd, int lend)
{
PP_SetLineTexture("d", (lend == GE_BUTT_CAP) ? 0. : 1.);
}
static void PDF_SetLineStyle(const pGEcontext gc, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
char dashlist[8];
int i;
int newlty = gc->lty;
double linewidth;
double newlwd = gc->lwd;
R_GE_lineend newlend = gc->lend;
R_GE_linejoin newljoin = gc->ljoin;
double newlmitre = gc->lmitre;
if (pd->current.lty != newlty || pd->current.lwd != newlwd ||
pd->current.lend != newlend) {
pd->current.lwd = newlwd;
pd->current.lty = newlty;
linewidth = newlwd * 0.75;
/* Must not allow line width to be zero */
if (linewidth < .01)
linewidth = .01;
fprintf(pd->pdffp, "%.2f w\n", linewidth);
/* process lty : */
for(i = 0; i < 8 && newlty & 15 ; i++) {
dashlist[i] = newlty & 15;
newlty = newlty >> 4;
}
PDFSetLineTexture(pd->pdffp, dashlist, i, newlwd * 0.75, newlend);
}
if (pd->current.lend != newlend) {
pd->current.lend = newlend;
PDFSetLineEnd(pd->pdffp, newlend);
}
if (pd->current.ljoin != newljoin) {
pd->current.ljoin = newljoin;
PDFSetLineJoin(pd->pdffp, newljoin);
}
if (pd->current.lmitre != newlmitre) {
pd->current.lmitre = newlmitre;
fprintf(pd->pdffp, "%.2f M\n", newlmitre);
}
}
/* This was an optimization that has effectively been disabled in
2.8.0, to avoid repeatedly going in and out of text mode. Howver,
Acrobat puts all text rendering calls in BT...ET into a single
transparency group, and other viewers do not. So for consistent
rendering we put each text() call into a separate group.
*/
static void texton(PDFDesc *pd)
{
fprintf(pd->pdffp, "BT\n");
pd->inText = TRUE;
}
static void textoff(PDFDesc *pd)
{
fprintf(pd->pdffp, "ET\n");
pd->inText = FALSE;
}
static void PDF_Encodings(PDFDesc *pd)
{
encodinglist enclist = pd->encodings;
while (enclist) {
encodinginfo encoding = enclist->encoding;
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "%d 0 obj\n<<\n/Type /Encoding ", pd->nobjs);
if (strcmp(encoding->name, "WinAnsiEncoding") == 0 ||
strcmp(encoding->name, "MacRomanEncoding") == 0 ||
strcmp(encoding->name, "PDFDocEncoding") == 0) {
fprintf(pd->pdffp, "/BaseEncoding /%s\n", encoding->name);
fprintf(pd->pdffp, "/Differences [ 45/minus ]\n");
} else if (strcmp(encoding->name, "ISOLatin1Encoding") == 0) {
fprintf(pd->pdffp, "/BaseEncoding /WinAnsiEncoding\n");
fprintf(pd->pdffp, "/Differences [ 45/minus 96/quoteleft\n144/dotlessi /grave /acute /circumflex /tilde /macron /breve /dotaccent\n/dieresis /.notdef /ring /cedilla /.notdef /hungarumlaut /ogonek /caron /space]\n");
} else {
int enc_first;
int c = 0;
int len;
char buf[128];
for(enc_first=0;encoding->enccode[enc_first]!='[' &&
encoding->enccode[enc_first]!='\0' ;enc_first++);
if (enc_first >= strlen(encoding->enccode))
enc_first=0;
fprintf(pd->pdffp, "/BaseEncoding /PDFDocEncoding\n");
fprintf(pd->pdffp, "/Differences [\n");
while(encoding->enccode[enc_first]) {
switch (encoding->enccode[enc_first]) {
case ' ':
case '\t':
case '\n':
case '[':
case ']':
enc_first++;
continue;
}
for(len=0;
(encoding->enccode[enc_first+len]!=' ') &&
(encoding->enccode[enc_first+len]!=']') &&
(encoding->enccode[enc_first+len]!='\t') &&
(encoding->enccode[enc_first+len]!='\0') &&
(encoding->enccode[enc_first+len]!='\n') ;
len++);
memcpy(buf,encoding->enccode + enc_first , len);
buf[len]='\0';
fprintf(pd->pdffp, " %d%s", c, buf);
if ( (c+1) % 8 == 0 ) fprintf(pd->pdffp, "\n");
c++;
enc_first+=len;
}
fprintf(pd->pdffp, "\n]\n");
}
fprintf(pd->pdffp, ">>\nendobj\n");
enclist = enclist->next;
}
}
/* Read sRGB profile from icc/srgb.flate
* HexCode original from
* http://code.google.com/p/ghostscript/source/browse/trunk/gs/iccprofiles/srgb.icc
*/
#define BUFSIZE2 10000
static void PDFwritesRGBcolorspace(PDFDesc *pd)
{
char buf[BUFSIZE2];
FILE *fp;
snprintf(buf, BUFSIZE2, "%s%slibrary%sgrDevices%sicc%s%s",
R_Home, FILESEP, FILESEP, FILESEP, FILESEP,
pd->useCompression ? "srgb.flate" : "srgb");
if (!(fp = R_fopen(R_ExpandFileName(buf), "rb")))
error(_("failed to load sRGB colorspace file"));
size_t res = fread(buf, 1, BUFSIZE2, fp);
res = fwrite(buf, 1, res, pd->pdffp);
fclose(fp);
}
#include <time.h> // for time_t, time, localtime
#include <Rversion.h>
static void PDF_startfile(PDFDesc *pd)
{
struct tm *ltm;
time_t ct;
pd->nobjs = 0;
pd->pageno = 0;
/*
* I destroy it when I open in Japanese environment carelessly
*/
fprintf(pd->pdffp, "%%PDF-%i.%i\n%%\x81\xe2\x81\xe3\x81\xcf\x81\xd3\x5c\x72\n",
pd->versionMajor, pd->versionMinor);
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
/* Object 1 is Info node. Date format is from the PDF manual */
ct = time(NULL);
ltm = localtime(&ct);
fprintf(pd->pdffp,
"1 0 obj\n<<\n/CreationDate (D:%04d%02d%02d%02d%02d%02d)\n",
1900 + ltm->tm_year, ltm->tm_mon+1, ltm->tm_mday,
ltm->tm_hour, ltm->tm_min, ltm->tm_sec);
fprintf(pd->pdffp,
"/ModDate (D:%04d%02d%02d%02d%02d%02d)\n",
1900 + ltm->tm_year, ltm->tm_mon+1, ltm->tm_mday,
ltm->tm_hour, ltm->tm_min, ltm->tm_sec);
fprintf(pd->pdffp, "/Title (%s)\n", pd->title);
fprintf(pd->pdffp, "/Producer (R %s.%s)\n/Creator (R)\n>>\nendobj\n",
R_MAJOR, R_MINOR);
/* Object 2 is the Catalog, pointing to pages list in object 3 (at end) */
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "2 0 obj\n<< /Type /Catalog /Pages 3 0 R >>\nendobj\n");
/* Objects at the end */
pd->nobjs += 2;
if (streql(pd->colormodel, "srgb")) pd->nobjs += 2;
}
static const char *Base14[] =
{
"Courier", "Courier-Oblique", "Courier-Bold", "Courier-BoldOblique",
"Helvetica", "Helvetica-Oblique", "Helvetica-Bold",
"Helvetica-BoldOblique", "Symbol", "Times-Roman", "Times-Italic",
"Times-Bold", "Times-BoldItalic", "ZapfDingbats"
};
static int isBase14(const char *name)
{
int i;
for(i = 0; i < 14; i++)
if(strcmp(name, Base14[i]) == 0) return 1;
return 0;
}
static const char *KnownSanSerif[] =
{
"AvantGarde", "Helvetica-Narrow", "URWGothic", "NimbusSan"
};
static int isSans(const char *name)
{
int i;
for(i = 0; i < 4; i++)
if(strncmp(name, KnownSanSerif[i], strlen(KnownSanSerif[i])) == 0)
return 1;
return 0;
}
#define boldslant(x) ((x==3)?",BoldItalic":((x==2)?",Italic":((x==1)?",Bold":"")))
#if defined(BUFSIZ) && (BUFSIZ > 512)
/* OS's buffer size in stdio.h, probably.
Windows has 512, Solaris 1024, glibc 8192
*/
# define APPENDBUFSIZE BUFSIZ
#else
# define APPENDBUFSIZE 512
#endif
static void PDF_endfile(PDFDesc *pd)
{
int i, startxref, tempnobj, nenc, nfonts, cidnfonts, firstencobj;
int nraster, nmask;
/* object 3 lists all the pages */
pd->pos[3] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "3 0 obj\n<< /Type /Pages /Kids [ ");
for(i = 0; i < pd->pageno; i++)
fprintf(pd->pdffp, "%d 0 R ", pd->pageobj[i]);
fprintf(pd->pdffp,
"] /Count %d /MediaBox [0 0 %d %d] >>\nendobj\n",
pd->pageno,
(int) (0.5 + pd->paperwidth), (int) (0.5 + pd->paperheight));
/* Object 4 is the standard resources dict for each page */
/* Count how many images and masks */
nraster = pd->numRasters;
nmask = pd->numMasks;
if(pd->nobjs + nraster + nmask + 500 >= pd->max_nobjs) {
int new = pd->nobjs + nraster + nmask + 500;
void *tmp = realloc(pd->pos, new * sizeof(int));
if(!tmp)
error("unable to increase object limit: please shutdown the pdf device");
pd->pos = (int *) tmp;
pd->max_nobjs = new;
}
pd->pos[4] = (int) ftell(pd->pdffp);
/* The resource dictionary for each page */
/* ProcSet is regarded as obsolete as from PDF 1.4 */
if (nraster > 0) {
if (nmask > 0) {
fprintf(pd->pdffp,
"4 0 obj\n<<\n/ProcSet [/PDF /Text /ImageC /ImageB]\n/Font <<");
} else {
fprintf(pd->pdffp,
"4 0 obj\n<<\n/ProcSet [/PDF /Text /ImageC]\n/Font <<");
}
} else {
/* fonts */
fprintf(pd->pdffp,
"4 0 obj\n<<\n/ProcSet [/PDF /Text]\n/Font <<");
}
/* Count how many encodings will be included:
* fonts come after encodings */
nenc = 0;
if (pd->encodings) {
encodinglist enclist = pd->encodings;
while (enclist) {
nenc++;
enclist = enclist->next;
}
}
/* Should be a default text font at least, plus possibly others */
tempnobj = pd->nobjs + nenc;
/* Dingbats always F1 */
if(pd->fontUsed[1]) fprintf(pd->pdffp, " /F1 %d 0 R ", ++tempnobj);
nfonts = 2;
if (pd->fonts) {
type1fontlist fontlist = pd->fonts;
while (fontlist) {
for (i = 0; i < 5; i++) {
if(nfonts >= 100 || pd->fontUsed[nfonts]) {
fprintf(pd->pdffp, "/F%d %d 0 R ", nfonts, ++tempnobj);
/* Allow for the font descriptor object, if present */
if(!isBase14(fontlist->family->fonts[i]->name)) tempnobj++;
}
nfonts++;
}
fontlist = fontlist->next;
}
}
cidnfonts = 0;
if (pd->cidfonts) {
cidfontlist fontlist = pd->cidfonts;
while (fontlist) {
for (i = 0; i < 5; i++) {
fprintf(pd->pdffp, "/F%d %d 0 R ",
1000 + cidnfonts + 1, ++tempnobj);
cidnfonts++;
}
fontlist = fontlist->next;
}
}
fprintf(pd->pdffp, ">>\n");
if (nraster > 0) {
/* image XObjects */
fprintf(pd->pdffp, "/XObject <<\n");
for (i = 0; i < nraster; i++) {
fprintf(pd->pdffp, " /Im%d %d 0 R\n", i, pd->rasters[i].nobj);
if (pd->masks[i] >= 0)
fprintf(pd->pdffp, " /Mask%d %d 0 R\n",
pd->masks[i], pd->rasters[i].nmaskobj);
}
fprintf(pd->pdffp, ">>\n");
}
/* graphics state parameter dictionaries */
fprintf(pd->pdffp, "/ExtGState << ");
for (i = 0; i < 256 && pd->colAlpha[i] >= 0; i++)
fprintf(pd->pdffp, "/GS%i %d 0 R ", i + 1, ++tempnobj);
for (i = 0; i < 256 && pd->fillAlpha[i] >= 0; i++)
fprintf(pd->pdffp, "/GS%i %d 0 R ", i + 257, ++tempnobj);
/* Special state to set AIS if we have soft masks */
if (nmask > 0)
fprintf(pd->pdffp, "/GSais %d 0 R ", ++tempnobj);
fprintf(pd->pdffp, ">>\n");
if (streql(pd->colormodel, "srgb")) {
/* Objects 5 and 6 are the sRGB color space, if required */
fprintf(pd->pdffp, "/ColorSpace << /sRGB 5 0 R >>\n");
fprintf(pd->pdffp, ">>\nendobj\n");
pd->pos[5] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "5 0 obj\n[/ICCBased 6 0 R]\nendobj\n");
pd->pos[6] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "6 0 obj\n");
PDFwritesRGBcolorspace(pd);
fprintf(pd->pdffp, "endobj\n");
} else {
fprintf(pd->pdffp, ">>\nendobj\n");
}
if(tempnobj >= pd->max_nobjs) {
int new = tempnobj + 500;
void *tmp = realloc(pd->pos, new * sizeof(int));
if(!tmp)
error("unable to increase object limit: please shutdown the pdf device");
pd->pos = (int *) tmp;
pd->max_nobjs = new;
}
/*
* Write out objects representing the encodings
*/
firstencobj = pd->nobjs;
PDF_Encodings(pd);
/*
* Write out objects representing the fonts
*/
if (pd->fontUsed[1]) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "%d 0 obj\n<< /Type /Font /Subtype /Type1 /Name /F1 /BaseFont /ZapfDingbats >>\nendobj\n", pd->nobjs);
}
nfonts = 2;
if (pd->fonts) {
type1fontlist fontlist = pd->fonts;
while (fontlist) {
FontMetricInfo *metrics;
/*
* Find the index of the device encoding
* This really should be there
*/
int encIndex;
encodinginfo encoding =
findDeviceEncoding(fontlist->family->encoding->encpath,
pd->encodings, &encIndex);
if (!encoding)
error(_("corrupt encodings in PDF device"));
for (i = 0; i < 5; i++) {
if (nfonts >= 100 || pd->fontUsed[nfonts]) {
type1fontinfo fn = fontlist->family->fonts[i];
int base = isBase14(fn->name);
metrics = &fn->metrics;
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "%d 0 obj\n<< /Type /Font /Subtype /Type1 /Name /F%d /BaseFont /%s\n",
pd->nobjs,
nfonts,
fn->name);
if (!base) {
int ii, first, last, tmp;
for(first = 1, ii = 0; ii < 255; ii++)
if(metrics->CharInfo[ii].WX != NA_SHORT) {
first = ii;
break;
}
for(last = 255, ii = 254; ii >= 0; ii--)
if(metrics->CharInfo[ii].WX != NA_SHORT) {
last = ii + 1;
break;
}
fprintf(pd->pdffp,
"/FirstChar %d /LastChar %d /Widths [\n",
first, last);
for (ii = first; ii <= last; ii++) {
tmp = metrics->CharInfo[ii].WX;
fprintf(pd->pdffp, " %d", tmp==NA_SHORT ? 0 : tmp);
if ((ii + 1) % 15 == 0) fprintf(pd->pdffp, "\n");
}
fprintf(pd->pdffp, "]\n");
fprintf(pd->pdffp, "/FontDescriptor %d 0 R\n",
pd->nobjs + 1);
}
if(i < 4)
fprintf(pd->pdffp, "/Encoding %d 0 R ",
/* Encodings come after dingbats font which is
* object 5 */
encIndex + firstencobj);
fprintf(pd->pdffp, ">>\nendobj\n");
if(!base) {
/* write font descriptor */
int flags = 32 /*bit 6, non-symbolic*/ +
((i==2 || i==3) ? 64/* italic */: 0) +
(metrics->IsFixedPitch > 0 ? 1 : 0) +
(isSans(fn->name) ? 0 : 2);
/* <FIXME> we have no real way to know
if this is serif or not */
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp,
"%d 0 obj <<\n"
" /Type /FontDescriptor\n"
" /FontName /%s\n"
" /Flags %d\n"
" /FontBBox [%d %d %d %d]\n"
" /CapHeight %d\n /Ascent %d\n /Descent %d\n"
" /ItalicAngle %d\n /XHeight %d\n /StemV %d\n"
">>\nendobj\n",
pd->nobjs,
fn->name,
(i == 4) ? 4 : flags,
metrics->FontBBox[0], metrics->FontBBox[1],
metrics->FontBBox[2], metrics->FontBBox[3],
metrics->CapHeight, metrics->Ascender,
metrics->Descender,
metrics->ItalicAngle, metrics->XHeight,
(metrics->StemV != NA_SHORT) ? metrics->StemV :
(i==2 || i==3) ? 140 : 83);
}
}
nfonts++;
}
fontlist = fontlist->next;
}
}
cidnfonts = 0;
if (pd->cidfonts) {
cidfontlist fontlist = pd->cidfonts;
if(pd->versionMajor == 1 && pd->versionMinor < 3) {
pd->versionMinor = 3;
warning(_("increasing the PDF version to 1.3"));
}
while (fontlist) {
for (i = 0; i < 4; i++) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp,
/** format **/
"%d 0 obj\n"
"<<\n"
" /Type /Font\n"
" /Subtype /Type0\n"
" /Name /F%d\n"
" /BaseFont /%s%s\n"
" /DescendantFonts [\n"
" <<\n"
" /Type /Font\n"
" /Subtype /CIDFontType0\n"
" /BaseFont /%s%s\n"
" %s"
" >>\n"
" ]\n"
" /Encoding /%s\n"
">>\n"
"endobj\n",
/** vararg **/
pd->nobjs, /* pdf objnum */
1000 + cidnfonts + 1, /* - face */
fontlist->cidfamily->cidfonts[i]->name,/* /BaseFont*/
boldslant(i), /* - boldslant */
fontlist->cidfamily->cidfonts[i]->name,/* /BaseFont*/
boldslant(i), /* - boldslant */
/* Resource */
/*
* Pull the resource out of R object
* Hopefully one day this will be unnecessary
*/
getCIDFontPDFResource(fontlist->cidfamily->fxname),
fontlist->cidfamily->cmap /* /Encoding */
);
cidnfonts++;
}
/* Symbol face does not use encoding */
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "%d 0 obj\n<<\n/Type /Font\n/Subtype /Type1\n/Name /F%d\n/BaseFont /%s\n>>\nendobj\n",
pd->nobjs,
1000 + cidnfonts + 1,
fontlist->cidfamily->symfont->name);
cidnfonts++;
fontlist = fontlist->next;
}
}
/*
* Write out objects representing the graphics state parameter
* dictionaries for alpha transparency
*/
for (i = 0; i < 256 && pd->colAlpha[i] >= 0; i++) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp,
"%d 0 obj\n<<\n/Type /ExtGState\n/CA %1.3f >>\nendobj\n",
pd->nobjs, pd->colAlpha[i]/255.0);
}
for (i = 0; i < 256 && pd->fillAlpha[i] >= 0; i++) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp,
"%d 0 obj\n<<\n/Type /ExtGState\n/ca %1.3f\n>>\nendobj\n",
pd->nobjs, pd->fillAlpha[i]/255.0);
}
if (nmask > 0) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp,
"%d 0 obj\n<<\n/Type /ExtGState\n/AIS false\n>>\nendobj\n",
pd->nobjs);
}
/* write out xref table */
startxref = (int) ftell(pd->pdffp);
/* items here must be exactly 20 bytes including terminator */
fprintf(pd->pdffp, "xref\n0 %d\n", pd->nobjs+1);
fprintf(pd->pdffp, "0000000000 65535 f \n");
for(i = 1; i <= pd->nobjs; i++)
fprintf(pd->pdffp, "%010d 00000 n \n", pd->pos[i]);
fprintf(pd->pdffp,
"trailer\n<< /Size %d /Info 1 0 R /Root 2 0 R >>\nstartxref\n%d\n",
pd->nobjs+1, startxref);
fprintf(pd->pdffp, "%%%%EOF\n");
/* now seek back and update the header */
rewind(pd->pdffp);
fprintf(pd->pdffp, "%%PDF-%i.%i\n", pd->versionMajor, pd->versionMinor);
fclose(pd->pdffp);
if (pd->open_type == 1) {
char buf[APPENDBUFSIZE];
size_t nc;
pd->pdffp = R_fopen(pd->filename, "rb");
while((nc = fread(buf, 1, APPENDBUFSIZE, pd->pdffp))) {
if(nc != fwrite(buf, 1, nc, pd->pipefp))
error("write error");
if (nc < APPENDBUFSIZE) break;
}
fclose(pd->pdffp);
pclose(pd->pipefp);
unlink(pd->filename);
}
}
static Rboolean PDF_Open(pDevDesc dd, PDFDesc *pd)
{
char buf[512];
if (pd->offline)
return TRUE;
if (pd->filename[0] == '|') {
strncpy(pd->cmd, pd->filename + 1, PATH_MAX - 1);
pd->cmd[PATH_MAX - 1] = '\0';
char *tmp = R_tmpnam("Rpdf", R_TempDir);
strncpy(pd->filename, tmp, PATH_MAX - 1);
pd->filename[PATH_MAX - 1] = '\0';
free(tmp);
errno = 0;
pd->pipefp = R_popen(pd->cmd, "w");
if (!pd->pipefp || errno != 0) {
char errbuf[strlen(pd->cmd) + 1];
strcpy(errbuf, pd->cmd);
PDFcleanup(6, pd);
error(_("cannot open 'pdf' pipe to '%s'"), errbuf);
return FALSE;
}
pd->open_type = 1;
if (!pd->onefile) {
pd->onefile = TRUE;
warning(_("file = \"|cmd\" implies 'onefile = TRUE'"));
}
} else pd->open_type = 0;
snprintf(buf, 512, pd->filename, pd->fileno + 1); /* file 1 to start */
/* NB: this must be binary to get tell positions and line endings right,
as well as allowing binary streams */
pd->mainfp = R_fopen(R_ExpandFileName(buf), "wb");
if (!pd->mainfp) {
PDFcleanup(6, pd);
free(dd);
error(_("cannot open file '%s'"), buf);
}
pd->pdffp = pd->mainfp;
PDF_startfile(pd);
return TRUE;
}
static void pdfClip(double x0, double x1, double y0, double y1, PDFDesc *pd)
{
if(x0 != 0.0 || y0 != 0.0 || x1 != 72*pd->width || y1 != 72*pd->height)
fprintf(pd->pdffp, "Q q %.2f %.2f %.2f %.2f re W n\n",
x0, y0, x1 - x0, y1 - y0);
else fprintf(pd->pdffp, "Q q\n");
}
static void PDF_Clip(double x0, double x1, double y0, double y1, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
PDF_checkOffline();
if(pd->inText) textoff(pd);
pdfClip(x0, x1, y0, y1, pd);
PDF_Invalidate(dd);
}
static void PDF_Size(double *left, double *right,
double *bottom, double *top,
pDevDesc dd)
{
*left = dd->left;
*right = dd->right;
*bottom = dd->bottom;
*top = dd->top;
}
static void PDF_endpage(PDFDesc *pd)
{
if(pd->inText) textoff(pd);
fprintf(pd->pdffp, "Q\n");
if (pd->useCompression) {
fflush(pd->pdffp);
fseek(pd->pdffp, 0, SEEK_END);
unsigned int len = (unsigned int) ftell(pd->pdffp);
fseek(pd->pdffp, 0, SEEK_SET);
Bytef *buf = Calloc(len, Bytef);
uLong outlen = (uLong)(1.001*len + 20);
Bytef *buf2 = Calloc(outlen, Bytef);
size_t res = fread(buf, 1, len, pd->pdffp);
if (res < len) error("internal read error in PDF_endpage");
fclose(pd->pdffp);
unlink(pd->tmpname);
pd->pdffp = pd->mainfp;
int res2 = compress(buf2, &outlen, buf, len);
if(res2 != Z_OK)
error("internal compression error %d in PDF_endpage", res2);
fprintf(pd->pdffp, "%d 0 obj\n<<\n/Length %d /Filter /FlateDecode\n>>\nstream\n",
pd->nobjs, (int) outlen);
size_t nwrite = fwrite(buf2, 1, outlen, pd->pdffp);
if(nwrite != outlen) error(_("write failed"));
Free(buf); Free(buf2);
fprintf(pd->pdffp, "endstream\nendobj\n");
} else {
int here = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "endstream\nendobj\n");
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
fprintf(pd->pdffp, "%d 0 obj\n%d\nendobj\n", pd->nobjs,
here - pd->startstream);
}
if(pd->nobjs + 2*(pd->numRasters-pd->writtenRasters) + 500
>= pd->max_nobjs) {
int new = pd->nobjs + 2*(pd->numRasters-pd->writtenRasters) + 2000;
void *tmp = realloc(pd->pos, new * sizeof(int));
if(!tmp)
error("unable to increase object limit: please shutdown the pdf device");
pd->pos = (int *) tmp;
pd->max_nobjs = new;
}
/* Write out any new rasters */
for (int i = pd->writtenRasters; i < pd->numRasters; i++) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
pd->rasters[i].nobj = pd->nobjs;
writeRasterXObject(pd->rasters[i], pd->nobjs,
pd->masks[i], pd->nobjs+1, pd);
if (pd->masks[i] >= 0) {
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
pd->rasters[i].nmaskobj = pd->nobjs;
writeMaskXObject(pd->rasters[i], pd->nobjs, pd);
}
free(pd->rasters[i].raster);
pd->rasters[i].raster = NULL;
pd->writtenRasters = pd->numRasters;
}
}
#define R_VIS(col) (R_ALPHA(col) > 0)
static void PDF_NewPage(const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
char buf[512];
PDF_checkOffline();
if(pd->pageno >= pd->pagemax) {
void * tmp = realloc(pd->pageobj, 2*pd->pagemax * sizeof(int));
if(!tmp)
error("unable to increase page limit: please shutdown the pdf device");
pd->pageobj = (int *) tmp;
pd->pagemax *= 2;
}
if(pd->nobjs + 500 >= pd->max_nobjs) {
int new = pd->max_nobjs + 2000;
void *tmp = realloc(pd->pos, new * sizeof(int));
if(!tmp)
error("unable to increase object limit: please shutdown the pdf device");
pd->pos = (int *) tmp;
pd->max_nobjs = new;
}
if(pd->pageno > 0) {
PDF_endpage(pd);
if(!pd->onefile) {
PDF_endfile(pd);
pd->fileno++;
snprintf(buf, 512, pd->filename, pd->fileno + 1); /* file 1 to start */
pd->mainfp = R_fopen(R_ExpandFileName(buf), "wb");
if (!pd->mainfp)
error(_("cannot open 'pdf' file argument '%s'\n please shut down the PDF device"), buf);
pd->pdffp = pd->mainfp;
PDF_startfile(pd);
}
}
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
pd->pageobj[pd->pageno++] = pd->nobjs;
fprintf(pd->pdffp, "%d 0 obj\n<< /Type /Page /Parent 3 0 R /Contents %d 0 R /Resources 4 0 R >>\nendobj\n",
pd->nobjs, pd->nobjs+1);
pd->pos[++pd->nobjs] = (int) ftell(pd->pdffp);
if (pd->useCompression) {
char *tmp = R_tmpnam("pdf", R_TempDir);
/* assume tmpname is less than PATH_MAX */
strcpy(pd->tmpname, tmp);
pd->pdffp = fopen(tmp, "w+b");
if (! pd->pdffp) {
pd->pdffp = pd->mainfp;
pd->useCompression = 0;
warning(_("Cannot open temporary file '%s' for compression (reason: %s); compression has been turned off for this device"),
tmp, strerror(errno));
}
free(tmp);
}
/* May have turned compression off in previous block */
if (!pd->useCompression) {
fprintf(pd->pdffp, "%d 0 obj\n<<\n/Length %d 0 R\n>>\nstream\n",
pd->nobjs, pd->nobjs + 1);
pd->startstream = (int) ftell(pd->pdffp);
}
/*
* Line end/join/mitre now controlled by user
* Same old defaults
* .. but they are still needed because SetXXX produces the corresponding
* command only if the value changes - so we have to define base defaults
* according to the values reset by Invalidate. I'm pretty sure about j/J
* but not so about M because Invalidate uses 0 yet the default used to be
* 10.
*
* fprintf(pd->pdffp, "1 J 1 j 10 M q\n");
*/
fprintf(pd->pdffp, "1 J 1 j q\n");
PDF_Invalidate(dd);
if(R_VIS(gc->fill)) {
PDF_SetFill(gc->fill, dd);
fprintf(pd->pdffp, "0 0 %.2f %.2f re f\n",
72.0 * pd->width, 72.0 * pd->height);
}
pd->inText = FALSE;
}
static void PDF_Close(pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
if (!pd->offline) {
if(pd->pageno > 0) PDF_endpage(pd);
PDF_endfile(pd);
/* may no longer be needed */
killRasterArray(pd->rasters, pd->maxRasters);
}
PDFcleanup(6, pd); /* which frees masks and rasters */
}
static void PDF_Rect(double x0, double y0, double x1, double y1,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
int code;
PDF_checkOffline();
code = 2 * (R_VIS(gc->fill)) + (R_VIS(gc->col));
if (code) {
if(pd->inText) textoff(pd);
if(code & 2)
PDF_SetFill(gc->fill, dd);
if(code & 1) {
PDF_SetLineColor(gc->col, dd);
PDF_SetLineStyle(gc, dd);
}
fprintf(pd->pdffp, "%.2f %.2f %.2f %.2f re", x0, y0, x1-x0, y1-y0);
switch(code) {
case 1: fprintf(pd->pdffp, " S\n"); break;
case 2: fprintf(pd->pdffp, " f\n"); break;
case 3: fprintf(pd->pdffp, " B\n"); break;
}
}
}
#ifdef SIMPLE_RASTER
/* Maybe reincoporate this simpler approach as an alternative
* (for opaque raster images) because it has the advantage of
* NOT keeping the raster in memory until the PDF file is complete
*/
static void PDF_Raster(unsigned int *raster,
int w, int h,
double x, double y,
double width, double height,
double rot, Rboolean interpolate,
const pGEcontext gc, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
double angle, cosa, sina;
PDF_checkOffline();
/* This takes the simple approach of creating an inline
* image. This is not recommended for larger images
* because it makes more work for the PDF viewer.
* It also does not allow for semitransparent images.
*/
if(pd->inText) textoff(pd);
/* Save graphics state */
fprintf(pd->pdffp, "q\n");
/* translate */
fprintf(pd->pdffp,
"1 0 0 1 %.2f %.2f cm\n",
x, y);
/* rotate */
angle = rot*M_PI/180;
cosa = cos(angle);
sina = sin(angle);
fprintf(pd->pdffp,
"%.2f %.2f %.2f %.2f 0 0 cm\n",
cosa, sina, -sina, cosa);
/* scale */
fprintf(pd->pdffp,
"%.2f 0 0 %.2f 0 0 cm\n",
width, height);
/* Begin image */
fprintf(pd->pdffp, "BI\n");
/* Image characteristics */
/* Use ASCIIHexDecode filter for now, just because
* it's easier to implement */
fprintf(pd->pdffp,
" /W %d\n /H %d\n /CS /RGB\n /BPC 8\n /F [/AHx]\n",
w, h);
if (interpolate) {
fprintf(pd->pdffp, " /I true\n");
}
/* Begin image data */
fprintf(pd->pdffp, "ID\n");
/* The image stream */
PDF_imagedata(raster, w, h, pd);
/* End image */
fprintf(pd->pdffp, "EI\n");
/* Restore graphics state */
fprintf(pd->pdffp, "Q\n");
}
#else
static void PDF_Raster(unsigned int *raster,
int w, int h,
double x, double y,
double width, double height,
double rot, Rboolean interpolate,
const pGEcontext gc, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
double angle, cosa, sina;
int alpha;
PDF_checkOffline();
/* Record the raster so can write it out when page is finished */
alpha = addRaster(raster, w, h, interpolate, pd);
if(pd->inText) textoff(pd);
/* Save graphics state */
fprintf(pd->pdffp, "q\n");
/* Need to set AIS graphics state parameter ? */
if (alpha) fprintf(pd->pdffp, "/GSais gs\n");
/* translate */
fprintf(pd->pdffp,
"1 0 0 1 %.2f %.2f cm\n",
x, y);
/* rotate */
angle = rot*M_PI/180;
cosa = cos(angle);
sina = sin(angle);
fprintf(pd->pdffp,
"%.2f %.2f %.2f %.2f 0 0 cm\n",
cosa, sina, -sina, cosa);
/* scale */
fprintf(pd->pdffp,
"%.2f 0 0 %.2f 0 0 cm\n",
width, height);
/* Refer to XObject which will be written to file when page is finished */
fprintf(pd->pdffp, "/Im%d Do\n", pd->numRasters - 1);
/* Restore graphics state */
fprintf(pd->pdffp, "Q\n");
}
#endif
/* r is in device coords */
static void PDF_Circle(double x, double y, double r,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
int code, tr;
double xx, yy, a;
PDF_checkOffline();
if (r <= 0.0) return; /* since PR#14797 use 0-sized pch=1, but now
GECircle omits such circles */
code = 2 * (R_VIS(gc->fill)) + (R_VIS(gc->col));
if (code) {
if(code & 2)
PDF_SetFill(gc->fill, dd);
if(code & 1) {
PDF_SetLineColor(gc->col, dd);
PDF_SetLineStyle(gc, dd);
}
}
if (code) {
if (semiTransparent(gc->col) || semiTransparent(gc->fill)
|| r > 10 || !pd->dingbats) {
/*
* Due to possible bug in Acrobat Reader for rendering
* semi-transparent text, only ever draw Bezier curves
* regardless of circle size. Otherwise use font up to 20pt
*/
{
/* Use four Bezier curves, hand-fitted to quadrants */
double s = 0.55 * r;
if(pd->inText) textoff(pd);
fprintf(pd->pdffp, " %.2f %.2f m\n", x - r, y);
fprintf(pd->pdffp, " %.2f %.2f %.2f %.2f %.2f %.2f c\n",
x - r, y + s, x - s, y + r, x, y + r);
fprintf(pd->pdffp, " %.2f %.2f %.2f %.2f %.2f %.2f c\n",
x + s, y + r, x + r, y + s, x + r, y);
fprintf(pd->pdffp, " %.2f %.2f %.2f %.2f %.2f %.2f c\n",
x + r, y - s, x + s, y - r, x, y - r);
fprintf(pd->pdffp, " %.2f %.2f %.2f %.2f %.2f %.2f c\n",
x - s, y - r, x - r, y - s, x - r, y);
switch(code) {
case 1: fprintf(pd->pdffp, "S\n"); break;
case 2: fprintf(pd->pdffp, "f\n"); break;
case 3: fprintf(pd->pdffp, "B\n"); break;
}
}
} else {
pd->fontUsed[1] = TRUE;
/* Use char 108 in Dingbats, which is a solid disc
afm is C 108 ; WX 791 ; N a71 ; B 35 -14 757 708 ;
so diameter = 0.722 * size
centre = (0.396, 0.347) * size
*/
a = 2./0.722 * r;
if (a < 0.01) return; // avoid 0 dims below.
xx = x - 0.396*a;
yy = y - 0.347*a;
tr = (R_OPAQUE(gc->fill)) +
2 * (R_OPAQUE(gc->col)) - 1;
if(!pd->inText) texton(pd);
fprintf(pd->pdffp,
"/F1 1 Tf %d Tr %.2f 0 0 %.2f %.2f %.2f Tm",
tr, a, a, xx, yy);
fprintf(pd->pdffp, " (l) Tj 0 Tr\n");
textoff(pd); /* added in 2.8.0 */
}
}
}
static void PDF_Line(double x1, double y1, double x2, double y2,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
PDF_checkOffline();
if(!R_VIS(gc->col)) return;
PDF_SetLineColor(gc->col, dd);
PDF_SetLineStyle(gc, dd);
if(pd->inText) textoff(pd);
fprintf(pd->pdffp, "%.2f %.2f m %.2f %.2f l S\n", x1, y1, x2, y2);
}
static void PDF_Polygon(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
double xx, yy;
int i, code;
PDF_checkOffline();
code = 2 * (R_VIS(gc->fill)) + (R_VIS(gc->col));
if (code) {
if(pd->inText) textoff(pd);
if(code & 2)
PDF_SetFill(gc->fill, dd);
if(code & 1) {
PDF_SetLineColor(gc->col, dd);
PDF_SetLineStyle(gc, dd);
}
xx = x[0];
yy = y[0];
fprintf(pd->pdffp, "%.2f %.2f m\n", xx, yy);
for(i = 1 ; i < n ; i++) {
xx = x[i];
yy = y[i];
fprintf(pd->pdffp, "%.2f %.2f l\n", xx, yy);
}
if (pd->fillOddEven) {
switch(code) {
case 1: fprintf(pd->pdffp, "s\n"); break;
case 2: fprintf(pd->pdffp, "h f*\n"); break;
case 3: fprintf(pd->pdffp, "b*\n"); break;
}
} else {
switch(code) {
case 1: fprintf(pd->pdffp, "s\n"); break;
case 2: fprintf(pd->pdffp, "h f\n"); break;
case 3: fprintf(pd->pdffp, "b\n"); break;
}
}
}
}
static void PDF_Path(double *x, double *y,
int npoly, int *nper,
Rboolean winding,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
double xx, yy;
int i, j, index, code;
PDF_checkOffline();
code = 2 * (R_VIS(gc->fill)) + (R_VIS(gc->col));
if (code) {
if(pd->inText) textoff(pd);
if(code & 2)
PDF_SetFill(gc->fill, dd);
if(code & 1) {
PDF_SetLineColor(gc->col, dd);
PDF_SetLineStyle(gc, dd);
}
index = 0;
for (i=0; i < npoly; i++) {
xx = x[index];
yy = y[index];
index++;
fprintf(pd->pdffp, "%.2f %.2f m\n", xx, yy);
for(j=1; j < nper[i]; j++) {
xx = x[index];
yy = y[index];
index++;
fprintf(pd->pdffp, "%.2f %.2f l\n", xx, yy);
}
if (i < npoly - 1)
fprintf(pd->pdffp, "h\n");
}
if (winding) {
switch(code) {
case 1: fprintf(pd->pdffp, "s\n"); break;
case 2: fprintf(pd->pdffp, "h f\n"); break;
case 3: fprintf(pd->pdffp, "b\n"); break;
}
} else {
switch(code) {
case 1: fprintf(pd->pdffp, "s\n"); break;
case 2: fprintf(pd->pdffp, "h f*\n"); break;
case 3: fprintf(pd->pdffp, "b*\n"); break;
}
}
}
}
static void PDF_Polyline(int n, double *x, double *y,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc*) dd->deviceSpecific;
double xx, yy;
int i;
PDF_checkOffline();
if(pd->inText) textoff(pd);
if(R_VIS(gc->col)) {
PDF_SetLineColor(gc->col, dd);
PDF_SetLineStyle(gc, dd);
xx = x[0];
yy = y[0];
fprintf(pd->pdffp, "%.2f %.2f m\n", xx, yy);
for(i = 1 ; i < n ; i++) {
xx = x[i];
yy = y[i];
fprintf(pd->pdffp, "%.2f %.2f l\n", xx, yy);
}
fprintf(pd->pdffp, "S\n");
}
}
static int PDFfontNumber(const char *family, int face, PDFDesc *pd)
{
/* DingBats is font 1 */
int num = 1;
if (strlen(family) > 0) {
int fontIndex, cidfontIndex;
/*
* Try to find font in already loaded fonts
*/
type1fontfamily fontfamily = findDeviceFont(family, pd->fonts,
&fontIndex);
cidfontfamily cidfontfamily = findDeviceCIDFont(family, pd->cidfonts,
&cidfontIndex);
if (fontfamily)
num = (fontIndex - 1)*5 + 1 + face;
else if (cidfontfamily)
/*
* Use very high font number for CID fonts to avoid
* Type 1 fonts
*/
num = 1000 + (cidfontIndex - 1)*5 + face;
else {
/*
* Check whether the font is loaded and, if not,
* load it.
*/
fontfamily = findLoadedFont(family,
pd->encodings->encoding->encpath,
TRUE);
cidfontfamily = findLoadedCIDFont(family, TRUE);
if (!(fontfamily || cidfontfamily)) {
if (isType1Font(family, PDFFonts, NULL)) {
fontfamily = addFont(family, TRUE, pd->encodings);
} else if (isCIDFont(family, PDFFonts, NULL)) {
cidfontfamily = addCIDFont(family, TRUE);
} else {
/*
* Should NOT get here.
*/
error(_("invalid font type"));
}
}
/*
* Once the font is loaded, add it to the device's
* list of fonts.
*/
if (fontfamily || cidfontfamily) {
if (isType1Font(family, PDFFonts, NULL)) {
if (addPDFDevicefont(fontfamily, pd, &fontIndex)) {
num = (fontIndex - 1)*5 + 1 + face;
} else {
fontfamily = NULL;
}
} else /* (isCIDFont(family, PDFFonts)) */ {
if (addPDFDeviceCIDfont(cidfontfamily, pd,
&cidfontIndex)) {
num = 1000 + (cidfontIndex - 1)*5 + face;
} else {
cidfontfamily = NULL;
}
}
}
}
if (!(fontfamily || cidfontfamily))
error(_("failed to find or load PDF font"));
} else {
if (isType1Font(family, PDFFonts, pd->defaultFont))
num = 1 + face;
else
num = 1000 + face;
}
if(num < 100) pd->fontUsed[num] = TRUE;
return num;
}
/* added for 2.9.0 (donated by Ei-ji Nakama) : */
static void PDFWriteT1KerningString(FILE *fp, const char *str,
FontMetricInfo *metrics,
const pGEcontext gc)
{
unsigned char p1, p2;
size_t i, n;
int j, ary_buf[128], *ary;
Rboolean haveKerning = FALSE;
n = strlen(str);
if (n < 1) return;
if(n > sizeof(ary_buf)/sizeof(int))
ary = Calloc(n, int);
else ary = ary_buf;
for(i = 0; i < n-1; i++) {
ary[i] = 0.;
p1 = str[i];
p2 = str[i+1];
#ifdef USE_HYPHEN
if (p1 == '-' && !isdigit((int)p2))
p1 = (unsigned char)PS_hyphen;
#endif
for (j = metrics->KPstart[p1]; j < metrics->KPend[p1]; j++)
if(metrics->KernPairs[j].c2 == p2 &&
metrics->KernPairs[j].c1 == p1) {
ary[i] += metrics->KernPairs[j].kern;
haveKerning = TRUE;
break;
}
}
ary[i] = 0;
if(haveKerning) {
fputc('[', fp); fputc('(', fp);
for(i = 0; str[i]; i++) {
switch(str[i]) {
case '\n':
fprintf(fp, "\\n");
break;
case '\\':
fprintf(fp, "\\\\");
break;
case '-':
#ifdef USE_HYPHEN
if (!isdigit((int)str[i+1]))
fputc(PS_hyphen, fp);
else
#endif
fputc(str[i], fp);
break;
case '(':
case ')':
fprintf(fp, "\\%c", str[i]);
break;
default:
fputc(str[i], fp);
break;
}
if( ary[i] != 0 && str[i+1] ) fprintf(fp, ") %d (", -ary[i]);
}
fprintf(fp, ")] TJ\n");
} else {
PostScriptWriteString(fp, str, strlen(str));
fprintf(fp, " Tj\n");
}
if(ary != ary_buf) Free(ary);
}
static FontMetricInfo *PDFmetricInfo(const char *, int, PDFDesc *);
static void PDFSimpleText(double x, double y, const char *str,
double rot, double hadj,
int font,
const pGEcontext gc,
pDevDesc dd) {
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
int size = (int)floor(gc->cex * gc->ps + 0.5);
int face = gc->fontface;
double a, b, bm, rot1;
if(!R_VIS(gc->col) || size <= 0) return;
if(face < 1 || face > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"), face);
face = 1;
}
rot1 = rot * DEG2RAD;
a = size * cos(rot1);
b = size * sin(rot1);
bm = -b;
/* avoid printing -0.00 on rotated text */
if(fabs(a) < 0.01) a = 0.0;
if(fabs(b) < 0.01) {b = 0.0; bm = 0.0;}
if(!pd->inText) texton(pd);
PDF_SetFill(gc->col, dd);
fprintf(pd->pdffp, "/F%d 1 Tf %.2f %.2f %.2f %.2f %.2f %.2f Tm ",
font,
a, b, bm, a, x, y);
if (pd->useKern &&
isType1Font(gc->fontfamily, PDFFonts, pd->defaultFont)) {
PDFWriteT1KerningString(pd->pdffp, str,
PDFmetricInfo(gc->fontfamily, face, pd), gc);
} else {
PostScriptWriteString(pd->pdffp, str, strlen(str));
fprintf(pd->pdffp, " Tj\n");
}
textoff(pd); /* added in 2.8.0 */
}
static char *PDFconvname(const char *family, PDFDesc *pd);
static void PDF_Text0(double x, double y, const char *str, int enc,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
int size = (int) floor(gc->cex * gc->ps + 0.5);
int face = gc->fontface;
double a, b, bm, rot1;
char *buff;
const char *str1;
PDF_checkOffline();
if(!R_VIS(gc->col) || size <= 0) return;
if(face < 1 || face > 5) {
warning(_("attempt to use invalid font %d replaced by font 1"), face);
face = 1;
}
if (face == 5) {
PDFSimpleText(x, y, str, rot, hadj,
PDFfontNumber(gc->fontfamily, face, pd),
gc, dd);
return;
}
rot1 = rot * DEG2RAD;
a = size * cos(rot1);
b = size * sin(rot1);
bm = -b;
/* avoid printing -0.00 on rotated text */
if(fabs(a) < 0.01) a = 0.0;
if(fabs(b) < 0.01) {b = 0.0; bm = 0.0;}
if(!pd->inText) texton(pd);
if(isCIDFont(gc->fontfamily, PDFFonts, pd->defaultCIDFont) && face != 5) {
/* NB we could be in a SBCS here */
size_t ucslen;
unsigned char *p;
int fontIndex;
/*
* CID convert optimize PDF encoding == locale encode case
*/
cidfontfamily cidfont = findDeviceCIDFont(gc->fontfamily,
pd->cidfonts,
&fontIndex);
if (!cidfont) {
int dontcare;
/*
* Try to load the font
*/
cidfont = addCIDFont(gc->fontfamily, 1);
if (cidfont) {
if (!addPDFDeviceCIDfont(cidfont, pd, &dontcare)) {
cidfont = NULL;
}
}
}
if (!cidfont)
error(_("failed to find or load PDF CID font"));
if(!dd->hasTextUTF8 &&
!strcmp(locale2charset(NULL), cidfont->encoding)) {
PDF_SetFill(gc->col, dd);
fprintf(pd->pdffp,
"/F%d 1 Tf %.2f %.2f %.2f %.2f %.2f %.2f Tm ",
PDFfontNumber(gc->fontfamily, face, pd),
a, b, bm, a, x, y);
fprintf(pd->pdffp, "<");
p = (unsigned char *) str;
while(*p)
fprintf(pd->pdffp, "%02x", *p++);
fprintf(pd->pdffp, ">");
fprintf(pd->pdffp, " Tj\n");
return;
}
/*
* CID convert PDF encoding != locale encode case
*/
ucslen = (dd->hasTextUTF8) ? Rf_utf8towcs(NULL, str, 0): mbstowcs(NULL, str, 0);
if (ucslen != (size_t)-1) {
void *cd;
const char *i_buf; char *o_buf;
size_t i, nb, i_len, o_len, buflen = ucslen*sizeof(ucs2_t);
size_t status;
cd = (void*)Riconv_open(cidfont->encoding,
(enc == CE_UTF8) ? "UTF-8": "");
if(cd == (void*)-1) return;
R_CheckStack2(buflen);
unsigned char buf[buflen];
i_buf = (char *)str;
o_buf = (char *)buf;
i_len = strlen(str); /* no terminator,
as output a byte at a time */
nb = o_len = buflen;
status = Riconv(cd, &i_buf, (size_t *)&i_len,
(char **)&o_buf, (size_t *)&o_len);
Riconv_close(cd);
if(status == (size_t)-1)
warning(_("failed in text conversion to encoding '%s'"),
cidfont->encoding);
else {
unsigned char *p;
PDF_SetFill(gc->col, dd);
fprintf(pd->pdffp,
"/F%d 1 Tf %.2f %.2f %.2f %.2f %.2f %.2f Tm <",
PDFfontNumber(gc->fontfamily, face, pd),
a, b, bm, a, x, y);
for(i = 0, p = buf; i < nb - o_len; i++)
fprintf(pd->pdffp, "%02x", *p++);
fprintf(pd->pdffp, "> Tj\n");
}
return;
} else {
warning(_("invalid string in '%s'"), "PDF_Text");
return;
}
}
PDF_SetFill(gc->col, dd);
fprintf(pd->pdffp, "/F%d 1 Tf %.2f %.2f %.2f %.2f %.2f %.2f Tm ",
PDFfontNumber(gc->fontfamily, face, pd),
a, b, bm, a, x, y);
if((enc == CE_UTF8 || mbcslocale) && !strIsASCII(str) && face < 5) {
/* face 5 handled above */
R_CheckStack2(strlen(str)+1);
buff = alloca(strlen(str)+1); /* Output string cannot be longer */
mbcsToSbcs(str, buff, PDFconvname(gc->fontfamily, pd), enc);
str1 = buff;
} else str1 = str;
if (pd->useKern &&
isType1Font(gc->fontfamily, PDFFonts, pd->defaultFont)) {
PDFWriteT1KerningString(pd->pdffp, str1,
PDFmetricInfo(gc->fontfamily, face, pd), gc);
} else{
PostScriptWriteString(pd->pdffp, str1, strlen(str1));
fprintf(pd->pdffp, " Tj\n");
}
textoff(pd); /* added in 2.8.0 */
}
static void PDF_Text(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
PDF_Text0(x, y, str, CE_NATIVE, rot, hadj, gc, dd);
}
static void PDF_TextUTF8(double x, double y, const char *str,
double rot, double hadj,
const pGEcontext gc,
pDevDesc dd)
{
PDF_Text0(x, y, str, CE_UTF8, rot, hadj, gc, dd);
}
static FontMetricInfo
*PDFCIDsymbolmetricInfo(const char *family, PDFDesc *pd)
{
FontMetricInfo *result = NULL;
if (strlen(family) > 0) {
int dontcare;
/*
* Find the family in pd->cidfonts
*/
cidfontfamily fontfamily = findDeviceCIDFont(family,
pd->cidfonts,
&dontcare);
if (fontfamily)
result = &(fontfamily->symfont->metrics);
else {
/*
* Try to load the font
*/
fontfamily = addCIDFont(family, 1);
if (fontfamily) {
if (addPDFDeviceCIDfont(fontfamily, pd, &dontcare)) {
result = &(fontfamily->symfont->metrics);
} else {
fontfamily = NULL;
}
}
}
if (!fontfamily)
error(_("failed to find or load PDF CID font"));
} else {
result = &(pd->cidfonts->cidfamily->symfont->metrics);
}
return result;
}
static FontMetricInfo
*PDFmetricInfo(const char *family, int face, PDFDesc *pd)
{
FontMetricInfo *result = NULL;
if (strlen(family) > 0) {
int dontcare;
/*
* Find the family in pd->fonts
*/
type1fontfamily fontfamily = findDeviceFont(family, pd->fonts,
&dontcare);
if (fontfamily)
result = &(fontfamily->fonts[face-1]->metrics);
else {
/*
* Check whether the font is loaded and, if not,
* load it.
*/
fontfamily = findLoadedFont(family,
pd->encodings->encoding->encpath,
TRUE);
if (!fontfamily) {
fontfamily = addFont(family, TRUE, pd->encodings);
}
/*
* Once the font is loaded, add it to the device's
* list of fonts.
*/
if (fontfamily) {
int dontcare;
if (addPDFDevicefont(fontfamily, pd, &dontcare)) {
result = &(fontfamily->fonts[face-1]->metrics);
} else {
fontfamily = NULL;
}
}
}
if (!fontfamily)
error(_("failed to find or load PDF font"));
} else {
result = &(pd->fonts->family->fonts[face-1]->metrics);
}
return result;
}
static char
*PDFconvname(const char *family, PDFDesc *pd)
{
char *result = (pd->fonts) ? pd->fonts->family->encoding->convname : "latin1";
/* pd->fonts is NULL when CIDfonts are used */
if (strlen(family) > 0) {
int dontcare;
/*
* Find the family in pd->fonts
*/
type1fontfamily fontfamily = findDeviceFont(family, pd->fonts,
&dontcare);
if (fontfamily)
result = fontfamily->encoding->convname;
else {
/*
* Check whether the font is loaded and, if not,
* load it.
*/
fontfamily = findLoadedFont(family,
pd->encodings->encoding->encpath,
TRUE);
if (!fontfamily) {
fontfamily = addFont(family, TRUE, pd->encodings);
}
/*
* Once the font is loaded, add it to the device's
* list of fonts.
*/
if (fontfamily) {
int dontcare;
if (addPDFDevicefont(fontfamily, pd, &dontcare)) {
result = fontfamily->encoding->convname;
} else {
fontfamily = NULL;
}
}
}
if (!fontfamily)
error(_("failed to find or load PDF font"));
}
return result;
}
double PDF_StrWidth(const char *str,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
if(gc->fontface < 1 || gc->fontface > 5) gc->fontface = 1;
if (isType1Font(gc->fontfamily, PDFFonts, pd->defaultFont)) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
PDFmetricInfo(gc->fontfamily,
gc->fontface, pd),
pd->useKern, gc->fontface,
PDFconvname(gc->fontfamily, pd));
} else { /* cidfont(gc->fontfamily) */
if (gc->fontface < 5) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
NULL, FALSE, gc->fontface, NULL);
} else {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_NATIVE,
PDFCIDsymbolmetricInfo(gc->fontfamily,
pd),
FALSE, gc->fontface, NULL);
}
}
}
static double PDF_StrWidthUTF8(const char *str,
const pGEcontext gc,
pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(gc->fontface < 1 || gc->fontface > 5) gc->fontface = 1;
if (isType1Font(gc->fontfamily, PDFFonts, pd->defaultFont)) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_UTF8,
PDFmetricInfo(gc->fontfamily,
gc->fontface, pd),
pd->useKern, gc->fontface,
PDFconvname(gc->fontfamily, pd));
} else { /* cidfont(gc->fontfamily) */
if (face < 5) {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_UTF8,
NULL, FALSE, gc->fontface, NULL);
} else {
return floor(gc->cex * gc->ps + 0.5) *
PostScriptStringWidth((const unsigned char *)str, CE_UTF8,
PDFCIDsymbolmetricInfo(gc->fontfamily,
pd),
FALSE, gc->fontface, NULL);
}
}
}
void PDF_MetricInfo(int c,
const pGEcontext gc,
double* ascent, double* descent,
double* width, pDevDesc dd)
{
PDFDesc *pd = (PDFDesc *) dd->deviceSpecific;
int face = gc->fontface;
if(gc->fontface < 1 || gc->fontface > 5) gc->fontface = 1;
if (isType1Font(gc->fontfamily, PDFFonts, pd->defaultFont)) {
PostScriptMetricInfo(c, ascent, descent, width,
PDFmetricInfo(gc->fontfamily,
gc->fontface, pd),
face == 5, PDFconvname(gc->fontfamily, pd));
} else { /* cidfont(gc->fontfamily) */
if (face < 5) {
PostScriptCIDMetricInfo(c, ascent, descent, width);
} else {
PostScriptMetricInfo(c, ascent, descent, width,
PDFCIDsymbolmetricInfo(gc->fontfamily, pd),
TRUE, "");
}
}
*ascent = floor(gc->cex * gc->ps + 0.5) * *ascent;
*descent = floor(gc->cex * gc->ps + 0.5) * *descent;
*width = floor(gc->cex * gc->ps + 0.5) * *width;
}
/* PostScript Device Driver Parameters:
* ------------------------
* file = output filename
* paper = paper type
* family = typeface = "family"
* encoding = char encoding file name
* cidfamily = char encoding file name for CID fonts
* bg = background color
* fg = foreground color
* width = width in inches
* height = height in inches
* horizontal = {TRUE: landscape; FALSE: portrait}
* ps = pointsize
* onefile = {TRUE: normal; FALSE: single EPSF page}
* pagecentre = centre plot region on paper?
* printit = 'print' after closing device?
* command = 'print' command
* title = character string
* fonts
* colorModel
* useKerning
* fillOddEven
*/
SEXP PostScript(SEXP args)
{
pGEDevDesc gdd;
const void *vmax;
const char *file, *paper, *family=NULL, *bg, *fg, *cmd;
const char *afms[5];
const char *encoding, *title, call[] = "postscript", *colormodel;
int i, horizontal, onefile, pagecentre, printit, useKern;
double height, width, ps;
SEXP fam, fonts;
Rboolean fillOddEven;
vmax = vmaxget();
args = CDR(args); /* skip entry point name */
file = translateChar(asChar(CAR(args))); args = CDR(args);
paper = CHAR(asChar(CAR(args))); args = CDR(args);
/* 'family' can be either one string or a 5-vector of afmpaths. */
fam = CAR(args); args = CDR(args);
if(length(fam) == 1)
family = CHAR(asChar(fam));
else if(length(fam) == 5) {
if(!isString(fam)) error(_("invalid 'family' parameter in %s"), call);
family = "User";
for(i = 0; i < 5; i++) afms[i] = CHAR(STRING_ELT(fam, i));
} else
error(_("invalid 'family' parameter in %s"), call);
encoding = CHAR(asChar(CAR(args))); args = CDR(args);
bg = CHAR(asChar(CAR(args))); args = CDR(args);
fg = CHAR(asChar(CAR(args))); args = CDR(args);
width = asReal(CAR(args)); args = CDR(args);
height = asReal(CAR(args)); args = CDR(args);
horizontal = asLogical(CAR(args));args = CDR(args);
if(horizontal == NA_LOGICAL)
horizontal = 1;
ps = asReal(CAR(args)); args = CDR(args);
onefile = asLogical(CAR(args)); args = CDR(args);
pagecentre = asLogical(CAR(args));args = CDR(args);
printit = asLogical(CAR(args)); args = CDR(args);
cmd = CHAR(asChar(CAR(args))); args = CDR(args);
title = translateChar(asChar(CAR(args))); args = CDR(args);
fonts = CAR(args); args = CDR(args);
if (!isNull(fonts) && !isString(fonts))
error(_("invalid 'fonts' parameter in %s"), call);
colormodel = CHAR(asChar(CAR(args))); args = CDR(args);
useKern = asLogical(CAR(args)); args = CDR(args);
if (useKern == NA_LOGICAL) useKern = 1;
fillOddEven = asLogical(CAR(args));
if (fillOddEven == NA_LOGICAL)
error(_("invalid value of '%s'"), "fillOddEven");
R_GE_checkVersionOrDie(R_GE_version);
R_CheckDeviceAvailable();
BEGIN_SUSPEND_INTERRUPTS {
pDevDesc dev;
if (!(dev = (pDevDesc) calloc(1, sizeof(DevDesc))))
return 0;
if(!PSDeviceDriver(dev, file, paper, family, afms, encoding, bg, fg,
width, height, (double)horizontal, ps, onefile,
pagecentre, printit, cmd, title, fonts,
colormodel, useKern, fillOddEven)) {
/* we no longer get here: error is thrown in PSDeviceDriver */
error(_("unable to start %s() device"), "postscript");
}
gdd = GEcreateDevDesc(dev);
GEaddDevice2f(gdd, "postscript", file);
} END_SUSPEND_INTERRUPTS;
vmaxset(vmax);
return R_NilValue;
}
/* XFig Device Driver Parameters:
* ------------------------
* file = output filename
* paper = paper type
* family = typeface = "family"
* bg = background color
* fg = foreground color
* width = width in inches
* height = height in inches
* horizontal = {TRUE: landscape; FALSE: portrait}
* ps = pointsize
* onefile = {TRUE: normal; FALSE: single EPSF page}
* pagecentre = centre plot region on paper?
* defaultfont = {TRUE: use xfig default font; FALSE: use R font}
* textspecial = {TRUE: use textspecial; FALSE: use standard font}
*
* encoding
*/
SEXP XFig(SEXP args)
{
pGEDevDesc gdd;
const void *vmax;
const char *file, *paper, *family, *bg, *fg, *encoding;
int horizontal, onefile, pagecentre, defaultfont, textspecial;
double height, width, ps;
vmax = vmaxget();
args = CDR(args); /* skip entry point name */
file = translateChar(asChar(CAR(args))); args = CDR(args);
paper = CHAR(asChar(CAR(args))); args = CDR(args);
family = CHAR(asChar(CAR(args))); args = CDR(args);
bg = CHAR(asChar(CAR(args))); args = CDR(args);
fg = CHAR(asChar(CAR(args))); args = CDR(args);
width = asReal(CAR(args)); args = CDR(args);
height = asReal(CAR(args)); args = CDR(args);
horizontal = asLogical(CAR(args));args = CDR(args);
if(horizontal == NA_LOGICAL)
horizontal = 1;
ps = asReal(CAR(args)); args = CDR(args);
onefile = asLogical(CAR(args)); args = CDR(args);
pagecentre = asLogical(CAR(args));args = CDR(args);
defaultfont = asLogical(CAR(args)); args = CDR(args);
textspecial = asLogical(CAR(args)); args = CDR(args);
encoding = CHAR(asChar(CAR(args)));
R_GE_checkVersionOrDie(R_GE_version);
R_CheckDeviceAvailable();
BEGIN_SUSPEND_INTERRUPTS {
pDevDesc dev;
if (!(dev = (pDevDesc) calloc(1, sizeof(DevDesc))))
return 0;
if(!XFigDeviceDriver(dev, file, paper, family, bg, fg, width, height,
(double) horizontal, ps, onefile, pagecentre, defaultfont, textspecial,
encoding)) {
/* we no longer get here: error is thrown in XFigDeviceDriver */
error(_("unable to start %s() device"), "xfig");
}
gdd = GEcreateDevDesc(dev);
GEaddDevice2f(gdd, "xfig", file);
} END_SUSPEND_INTERRUPTS;
vmaxset(vmax);
return R_NilValue;
}
/* PDF Device Driver Parameters:
* ------------------------
* file = output filename
* paper = paper type
* family = typeface = "family"
* encoding = char encoding file name
* cidfamily = char encoding file name for CID fonts
* bg = background color
* fg = foreground color
* width = width in inches
* height = height in inches
* ps = pointsize
* onefile = {TRUE: normal; FALSE: single page per file}
* title
* fonts
* versionMajor
* versionMinor
* colormodel
* useDingbats
* forceLetterSpacing
* fillOddEven
*/
SEXP PDF(SEXP args)
{
pGEDevDesc gdd;
const void *vmax;
const char *file, *paper, *encoding, *family = NULL /* -Wall */,
*bg, *fg, *title, call[] = "PDF", *colormodel;
const char *afms[5];
double height, width, ps;
int i, onefile, pagecentre, major, minor, dingbats, useKern, useCompression;
SEXP fam, fonts;
Rboolean fillOddEven;
vmax = vmaxget();
args = CDR(args); /* skip entry point name */
if (isNull(CAR(args)))
file = NULL;
else
file = translateChar(asChar(CAR(args)));
args = CDR(args);
paper = CHAR(asChar(CAR(args))); args = CDR(args);
fam = CAR(args); args = CDR(args);
if(length(fam) == 1)
family = CHAR(asChar(fam));
else if(length(fam) == 5) {
if(!isString(fam)) error(_("invalid 'family' parameter in %s"), call);
family = "User";
for(i = 0; i < 5; i++) afms[i] = CHAR(STRING_ELT(fam, i));
} else
error(_("invalid 'family' parameter in %s"), call);
encoding = CHAR(asChar(CAR(args))); args = CDR(args);
bg = CHAR(asChar(CAR(args))); args = CDR(args);
fg = CHAR(asChar(CAR(args))); args = CDR(args);
width = asReal(CAR(args)); args = CDR(args);
height = asReal(CAR(args)); args = CDR(args);
ps = asReal(CAR(args)); args = CDR(args);
onefile = asLogical(CAR(args)); args = CDR(args);
pagecentre = asLogical(CAR(args));args = CDR(args);
title = translateChar(asChar(CAR(args))); args = CDR(args);
fonts = CAR(args); args = CDR(args);
if (!isNull(fonts) && !isString(fonts))
error(_("invalid 'fonts' parameter in %s"), call);
major = asInteger(CAR(args)); args = CDR(args);
minor = asInteger(CAR(args)); args = CDR(args);
colormodel = CHAR(asChar(CAR(args))); args = CDR(args);
dingbats = asLogical(CAR(args)); args = CDR(args);
if (dingbats == NA_LOGICAL) dingbats = 1;
useKern = asLogical(CAR(args)); args = CDR(args);
if (useKern == NA_LOGICAL) useKern = 1;
fillOddEven = asLogical(CAR(args)); args = CDR(args);
if (fillOddEven == NA_LOGICAL)
error(_("invalid value of '%s'"), "fillOddEven");
useCompression = asLogical(CAR(args)); args = CDR(args);
if (useCompression == NA_LOGICAL)
error(_("invalid value of '%s'"), "useCompression");
R_GE_checkVersionOrDie(R_GE_version);
R_CheckDeviceAvailable();
BEGIN_SUSPEND_INTERRUPTS {
pDevDesc dev;
if (!(dev = (pDevDesc) calloc(1, sizeof(DevDesc))))
return 0;
if(!PDFDeviceDriver(dev, file, paper, family, afms, encoding, bg, fg,
width, height, ps, onefile, pagecentre,
title, fonts, major, minor, colormodel,
dingbats, useKern, fillOddEven,
useCompression)) {
/* we no longer get here: error is thrown in PDFDeviceDriver */
error(_("unable to start %s() device"), "pdf");
}
gdd = GEcreateDevDesc(dev);
GEaddDevice2f(gdd, "pdf", file);
} END_SUSPEND_INTERRUPTS;
vmaxset(vmax);
return R_NilValue;
}