/* Hello, Emacs, this is -*-C-*-
* $Id: pdf.trm,v 1.94 2014/05/07 04:37:28 sfeam Exp $
*/
/*------------------------------
GNUPLOT - pdf.trm
This file is included by ../term.c.
This driver uses PDFlib from www.pdflib.com
Author:
Hans-Bernhard Br"oker
broeker@physik.rwth-aachen.de
Licence: see the gnuplot copyright (to be merged into here...)
Options: can #define PDF_DONT_COMPRESS to avoid PDF output
generated being compressed (by the 'deflate' algorithm as used
in 'zip' or 'gzip'). That helps in debugging.
------------------------------*/
/* CODEME: Add patterned lines (?). */
/* PM3D support by Johannes Zellner <johannes@zellner.org>, May-15-2002 */
/* set_color fixes by Petr Mikulik <mikulik@physics.muni.cz>, June-10-2002 */
/* image support by Ethan A Merritt <merritt@u.washington.edu>, March 2003 */
/* Text rotation 24-Jul-2002 Ethan A Merritt <merritt@u.washington.edu> */
/* Revised fill patterns 02-Apr-2003 Ethan A Merritt */
/* Enhanced text mode support November 2003 Ethan A Merritt */
#include "driver.h"
#ifdef TERM_REGISTER
register_term(pdf)
#endif
#ifdef TERM_PROTO
TERM_PUBLIC void PDF_options __PROTO ((void));
TERM_PUBLIC void PDF_init __PROTO ((void));
TERM_PUBLIC void PDF_graphics __PROTO ((void));
TERM_PUBLIC void PDF_text __PROTO ((void));
TERM_PUBLIC void PDF_linetype __PROTO ((int linetype));
TERM_PUBLIC void PDF_move __PROTO ((unsigned int x, unsigned int y));
TERM_PUBLIC void PDF_vector __PROTO ((unsigned int x, unsigned int y));
TERM_PUBLIC void PDF_put_text __PROTO ((unsigned int x, unsigned int y, const char *str));
TERM_PUBLIC void PDF_reset __PROTO ((void));
TERM_PUBLIC int PDF_justify_text __PROTO ((enum JUSTIFY mode));
TERM_PUBLIC int PDF_text_angle __PROTO ((int ang));
TERM_PUBLIC void PDF_point __PROTO ((unsigned int x, unsigned int y, int pointstyle));
TERM_PUBLIC int PDF_set_font __PROTO ((const char *font));
TERM_PUBLIC void PDF_boxfill __PROTO((int style, unsigned int x1, unsigned int y1, unsigned int width, unsigned int height));
TERM_PUBLIC void PDF_linewidth __PROTO ((double linewidth));
TERM_PUBLIC int PDF_make_palette __PROTO((t_sm_palette *));
TERM_PUBLIC void PDF_previous_palette __PROTO((void));
TERM_PUBLIC void PDF_set_color __PROTO((t_colorspec *));
TERM_PUBLIC void PDF_image __PROTO((unsigned int, unsigned int, coordval *, gpiPoint *, t_imagecolor));
TERM_PUBLIC void PDF_filled_polygon __PROTO((int, gpiPoint *));
/* To support "set term png enhanced" */
TERM_PUBLIC void ENHPDF_put_text __PROTO((unsigned int x, unsigned int y, const char *str));
TERM_PUBLIC void ENHPDF_OPEN __PROTO((char * fontname, double fontsize,
double base, TBOOLEAN widthflag, TBOOLEAN showflag,
int overprint));
TERM_PUBLIC void ENHPDF_FLUSH __PROTO((void));
#define PDF_NUM_POINTTYPES 75 /* number of point symbol types not counting the dot */
#define PDF_RESOLUTION (20) /* number of terminal pixels per pt */
#define PDF_XMAX (5*72*PDF_RESOLUTION) /* 5 inches, 72 pt/inch */
#define PDF_YMAX (3*72*PDF_RESOLUTION) /* 3 inches, 72 pt/inch */
static TBOOLEAN pdf_explicit_size = FALSE;
static size_units pdf_explicit_units = INCHES;
#endif /* TERM_PROTO */
#ifndef TERM_PROTO_ONLY
#ifdef TERM_BODY
#include <pdflib.h>
static PDF *myPDF = NULL;
static unsigned int PDF_xLast = UINT_MAX; /* current pen horizontal position*/
static unsigned int PDF_yLast = UINT_MAX; /* current pen vertical position*/
static int PDF_LineType = LT_UNDEFINED; /* current line type*/
static int PDF_LineCap = 0; /* Butt ends */
static double PDF_LineWidth = 1.0; /* current line width*/
static int PDF_TextAngle = 0; /* current text orientation*/
static enum JUSTIFY PDF_TextJust = LEFT; /* current text justification*/
static double PDF_linewidth_factor = 1.0; /* multiplier for line width */
static double PDF_dashlength_factor = 1.0; /* multiplier for dash length */
static TBOOLEAN PDF_monochrome = FALSE; /* default all linetypes to black */
static rgb_color PDF_current_rgb = {0.,0.,0.}; /* Last color set */
static double PDF_current_gray = 0.0; /* Last color set (mono version) */
#ifdef HAVE_NODASH_LIBPDF
static TBOOLEAN PDF_dashedlines = FALSE; /* solid or dashed? */
#else
static TBOOLEAN PDF_dashedlines = TRUE; /* solid or dashed? */
#endif
/* default text font family: */
static char PDF_fontNameDef[MAX_ID_LEN + 1] = "Helvetica";
static double PDF_fontSizeDef = 6; /* default text size*/
/* current text font family: */
static char PDF_fontNameCur[MAX_ID_LEN + 1] = "Helvetica";
static double PDF_fontSizeCur = 6; /* current text size*/
static double PDF_fontscale = 1.0;
static TBOOLEAN PDF_pageIsOpen = FALSE; /* already started a page ?? */
static TBOOLEAN PDF_pathIsOpen = FALSE; /* open path flag*/
static int PDF_fontAscent = 0; /* estimated current font ascent*/
static int PDF_fontDescent = 0; /* estimated current font descent*/
static int PDF_fontLeading = 0; /* estimated current font leading*/
static int PDF_fontAvWidth = 0; /* estimated current font char average width*/
static int PDF_currentFontHandle; /* Needed for exhanced text mode */
static short PDF_Pen_RealID __PROTO ((int));
static void PDF_PathOpen __PROTO ((void));
static void PDF_PathClose __PROTO ((void));
static void PDF_SetFont __PROTO ((void));
static void PDF_DefinePatterns __PROTO((void));
enum { PDF_patterns = 7 };
static int PDF_patternHandles[PDF_patterns];
#ifndef HAVE_NODASH_LIBPDF
/* Description of dash patterns (same as those in post.trm) */
static int dash1[] = {8, 8};
static int dash2[] = {4, 6};
static int dash3[] = {2, 3};
static int dash4[] = {12, 4, 2, 4};
static int dash5[] = {6, 6, 2, 6};
static int dash6[] = {4, 4, 4, 12};
static int dash7[] = {1, 4, 12, 4, 1, 4};
#endif
/*------------------------ helper functions -------------------*/
static short
PDF_Pen_RealID (int inPenCode)
{
if (inPenCode >= 12)
inPenCode %= 12; /* normalize pen code*/
if (inPenCode <= LT_NODRAW)
inPenCode = LT_NODRAW;
return (inPenCode + 2);
}
/* Functions to ensure that as many move() and vector() calls as
* possible get converted into a single long 'path', before closing it
* with a stroke or similar command. */
static void
PDF_PathOpen ()
{
PDF_pathIsOpen = TRUE;
}
static void
PDF_PathClose ()
{
if (PDF_pathIsOpen) {
PDF_stroke(myPDF);
PDF_pathIsOpen = FALSE;
}
}
/* Helper function to deal with switching over to a newly selected font.
* For now, this does not try to embed fonts into the PDF file.
* We would like to allow UTF-8 fonts via
font_handle = PDF_findfont(myPDF, PDF_fontNameCur, "unicode", 0);
* but this is not supported by the free-as-in-beer PDFlib Lite.
*/
static void
PDF_SetFont ()
{
int font_handle;
const char *pdfenc = "host";
/* Allow graceful failure */
PDF_set_parameter(myPDF, "fontwarning", "false");
/* LCB : Symbol and ZapfDingbats should use "builtin" encoding */
if ( (strcmp(PDF_fontNameCur,"Symbol") == 0) ||
(strcmp(PDF_fontNameCur,"ZapfDingbats") == 0) ) {
pdfenc = "builtin";
} else if (encoding == S_ENC_ISO8859_1) {
pdfenc = "iso8859-1";
} else if (encoding == S_ENC_ISO8859_2) {
pdfenc = "iso8859-2";
} else if (encoding == S_ENC_ISO8859_9) {
pdfenc = "iso8859-9";
} else if (encoding == S_ENC_ISO8859_15) {
pdfenc = "iso8859-15";
} else if (encoding == S_ENC_CP1250) {
pdfenc = "cp1250";
} else if (encoding == S_ENC_CP1252) {
pdfenc = "cp1252";
}
font_handle = PDF_findfont(myPDF, PDF_fontNameCur, pdfenc, 0);
if (font_handle == -1 && strcmp(pdfenc, "host")) {
fprintf(stderr,"Couldn't find font %s in encoding %s, trying \"host\"\n",
PDF_fontNameCur, pdfenc);
font_handle = PDF_findfont(myPDF, PDF_fontNameCur, "host", 0);
}
if (font_handle == -1) {
font_handle = PDF_findfont(myPDF, "Times-Roman", "host", 0);
fprintf(stderr,"Couldn't find font %s, falling back to Times-Roman\n", PDF_fontNameCur);
}
PDF_setfont(myPDF, font_handle, PDF_fontSizeCur * PDF_RESOLUTION * PDF_fontscale);
/* Ask PDFlib for the actual numbers */
PDF_fontAscent = (int) (PDF_RESOLUTION * PDF_fontSizeCur * PDF_fontscale * PDF_get_value(myPDF, "ascender", 0));
PDF_fontDescent = (int) (- PDF_RESOLUTION * PDF_fontSizeCur * PDF_fontscale * PDF_get_value(myPDF, "descender", 0));
PDF_fontLeading = (int) (PDF_RESOLUTION * PDF_fontSizeCur * PDF_fontscale * 0.25);
/* Assume this particular string is a somewhat reasonable typical
* output, for getting at the average character width */
PDF_fontAvWidth = (int)
(PDF_RESOLUTION * PDF_stringwidth(myPDF, "01234567890123456789",
font_handle, PDF_fontSizeCur * PDF_fontscale )
/ 20.0);
PDF_currentFontHandle = font_handle;
}
#if !HAVE_OLD_LIBPDF
static void
PDF_DefinePatterns()
{
int i;
/* EAM April 2003 - Rearrange patterns to maximize contrast in mono.
* Because of the finite linewidth, each pattern must include line
* fragments at the "empty" corners.
*/
for (i=0; i<PDF_patterns; i++) {
PDF_patternHandles[i] = PDF_begin_pattern(myPDF, 8, 8, 8, 8, 2);
PDF_setlinewidth(myPDF, 0.25);
PDF_setlinecap(myPDF, 2); /* square ends */
switch (i) {
case 0: PDF_moveto(myPDF, 0, 8);
PDF_lineto(myPDF, 8, 0);
PDF_moveto(myPDF, 0, 0);
PDF_lineto(myPDF, 8, 8);
PDF_stroke(myPDF);
break;
case 1: PDF_moveto(myPDF, 0, 8);
PDF_lineto(myPDF, 8, 0);
PDF_moveto(myPDF, 0, 0);
PDF_lineto(myPDF, 8, 8);
PDF_moveto(myPDF, 4, 0);
PDF_lineto(myPDF, 8, 4);
PDF_lineto(myPDF, 4, 8);
PDF_lineto(myPDF, 0, 4);
PDF_lineto(myPDF, 4, 0);
PDF_stroke(myPDF);
break;
case 2: PDF_moveto(myPDF, 0, 0);
PDF_lineto(myPDF, 0, 8);
PDF_lineto(myPDF, 8, 8);
PDF_lineto(myPDF, 8, 0);
PDF_lineto(myPDF, 0, 0);
PDF_fill(myPDF);
break;
case 3: PDF_moveto(myPDF, 0, 4);
PDF_lineto(myPDF, 4, 0);
PDF_moveto(myPDF, 4, 8);
PDF_lineto(myPDF, 8, 4);
PDF_stroke(myPDF);
break;
case 4: PDF_moveto(myPDF, 0, 4);
PDF_lineto(myPDF, 4, 8);
PDF_moveto(myPDF, 4, 0);
PDF_lineto(myPDF, 8, 4);
PDF_stroke(myPDF);
break;
case 5: PDF_moveto(myPDF, 0, 4);
PDF_lineto(myPDF, 2, 0);
PDF_moveto(myPDF, 2, 8);
PDF_lineto(myPDF, 6, 0);
PDF_moveto(myPDF, 6, 8);
PDF_lineto(myPDF, 8, 4);
PDF_stroke(myPDF);
break;
case 6: PDF_moveto(myPDF, 0, 4);
PDF_lineto(myPDF, 2, 8);
PDF_moveto(myPDF, 2, 0);
PDF_lineto(myPDF, 6, 8);
PDF_moveto(myPDF, 6, 0);
PDF_lineto(myPDF, 8, 4);
PDF_stroke(myPDF);
break;
case 7: /* not used */
PDF_moveto(myPDF, 4, 0);
PDF_lineto(myPDF, 0, 2);
PDF_moveto(myPDF, 8, 2);
PDF_lineto(myPDF, 0, 6);
PDF_moveto(myPDF, 8, 6);
PDF_lineto(myPDF, 4, 8);
PDF_stroke(myPDF);
break;
case 8: /* not used */
PDF_moveto(myPDF, 4, 0);
PDF_lineto(myPDF, 8, 2);
PDF_moveto(myPDF, 0, 2);
PDF_lineto(myPDF, 8, 6);
PDF_moveto(myPDF, 0, 6);
PDF_lineto(myPDF, 4, 8);
PDF_stroke(myPDF);
break;
}
PDF_end_pattern(myPDF);
}
}
#endif
/*------------------- the terminal entry functions --------------------*/
TERM_PUBLIC void
PDF_options ()
{
/* Annoying hack to handle the case of 'set termoption' after */
/* we have already initialized the terminal. */
if (!almost_equals(c_token-1, "termopt$ion")) {
pdf_explicit_size = FALSE;
/* Default to enhanced text */
term->put_text = ENHPDF_put_text;
term->flags |= TERM_ENHANCED_TEXT;
}
while (!END_OF_COMMAND) {
if (almost_equals(c_token, "enh$anced")) {
c_token++;
term->put_text = ENHPDF_put_text;
term->flags |= TERM_ENHANCED_TEXT;
continue;
} else if (almost_equals(c_token, "noenh$anced")) {
c_token++;
term->put_text = PDF_put_text;
term->flags &= ~TERM_ENHANCED_TEXT;
continue;
}
if (almost_equals(c_token, "fn$ame") || almost_equals(c_token, "font")) {
char *s, *comma;
c_token++;
if (!(s = try_to_get_string()))
int_error(c_token,"fname: expecting font name");
comma = strrchr(s,',');
if (comma && (1 == sscanf(comma+1,"%lf",&PDF_fontSizeDef)))
*comma = '\0';
if (*s)
strncpy(PDF_fontNameDef, s, sizeof(PDF_fontNameDef));
free(s);
continue;
}
if (almost_equals(c_token, "fs$ize")) {
c_token++;
if (END_OF_COMMAND)
int_error(c_token,"fsize: expecting font size");
PDF_fontSizeDef = real_expression();
continue;
}
if (equals(c_token, "lw") || almost_equals(c_token, "linew$idth")) {
c_token++;
if (END_OF_COMMAND)
int_error(c_token, "expecting line width");
PDF_linewidth_factor = real_expression();
if (PDF_linewidth_factor <= 0)
PDF_linewidth_factor = 0.1;
continue;
}
if (almost_equals(c_token, "rou$nded")) {
c_token++;
PDF_LineCap = 1;
continue;
}
if (equals(c_token, "butt")) {
PDF_LineCap = 0;
continue;
}
if (equals(c_token, "color") || almost_equals(c_token, "col$our")) {
c_token++;
PDF_monochrome = FALSE;
term->flags &= ~TERM_MONOCHROME;
continue;
}
if (almost_equals(c_token, "mono$chrome")) {
c_token++;
PDF_monochrome = TRUE;
term->flags |= TERM_MONOCHROME;
continue;
}
if (equals(c_token, "dl") || almost_equals(c_token, "dashl$ength")) {
c_token++;
if (END_OF_COMMAND)
int_error(c_token, "expecting dashlength multiplier");
PDF_dashlength_factor = real_expression();
if (PDF_dashlength_factor < 0.0)
PDF_dashlength_factor = 1.0;
continue;
}
if (almost_equals(c_token, "dash$ed") || equals(c_token, "solid")) {
/* Version 5 always enables dashed lines */
c_token++;
continue;
}
if (equals(c_token, "size")) {
float xmax_t, ymax_t;
c_token++;
pdf_explicit_size = TRUE;
pdf_explicit_units = parse_term_size(&xmax_t, &ymax_t, INCHES);
term->xmax = xmax_t*PDF_RESOLUTION*72./gp_resolution;
term->ymax = ymax_t*PDF_RESOLUTION*72./gp_resolution;
continue;
}
if (equals(c_token, "fontscale")) {
c_token++;
PDF_fontscale = END_OF_COMMAND ? -1 : real_expression();
if (PDF_fontscale < 0)
PDF_fontscale = 1.0;
continue;
}
int_error(c_token, "unexpected text at end of command");
}
/* Save options back into options string in normalized format */
sprintf(term_options, "%s%s fname '%s' fsize %g fontscale %3.1f linewidth %3.1f %s ",
PDF_monochrome ? "monochrome " : " ",
term->put_text == ENHPDF_put_text ? "enhanced" : "noenhanced",
PDF_fontNameDef, PDF_fontSizeDef, PDF_fontscale, PDF_linewidth_factor,
PDF_LineCap == 1 ? "rounded" : "");
if (PDF_dashedlines)
sprintf(&(term_options[strlen(term_options)]), "dl %3.1f",
PDF_dashlength_factor);
if (pdf_explicit_size) {
if (pdf_explicit_units == CM)
sprintf(&(term_options[strlen(term_options)]), "size %.2fcm, %.2fcm ",
2.54*(float)term->xmax/(72.*PDF_RESOLUTION),
2.54*(float)term->ymax/(72.*PDF_RESOLUTION));
else
sprintf(&(term_options[strlen(term_options)]), "size %.2fin, %.2fin ",
(float)term->xmax/(72.*PDF_RESOLUTION),
(float)term->ymax/(72.*PDF_RESOLUTION));
}
}
TERM_PUBLIC void
PDF_init ()
{
static TBOOLEAN PDFlib_booted = FALSE;
char *gpversionstring;
char *username;
char *timedate;
time_t now;
if (!PDFlib_booted) {
PDF_boot();
PDFlib_booted = TRUE;
}
if (!myPDF)
myPDF = PDF_new();
/*open new PDF file */
#ifdef HAVE_LIBPDF_OPEN_FILE
if (PDF_open_file(myPDF, outstr) == -1)
#else
if (PDF_begin_document(myPDF, outstr?outstr:"-", 0,
"compatibility=1.4") == -1)
#endif /* HAVE_LIBPDF_OPEN_FILE */
int_error(NO_CARET, "Error:cannot open PDF file .\n");
#ifdef PDF_DONT_COMPRESS
/* for easier debugging of the output, turn off PDF stream
* compression */
PDF_set_value(myPDF, "compress", 0);
#endif
gpversionstring = gp_alloc(20 + strlen(gnuplot_version) +
strlen(gnuplot_patchlevel) + 1, "PDF_init");
sprintf(gpversionstring,"gnuplot %s patchlevel %s",
gnuplot_version, gnuplot_patchlevel);
time(&now);
timedate=asctime(localtime(&now));
timedate[strlen(timedate)-1]='\0';
PDF_set_info(myPDF,"Creator",gpversionstring);
username=getusername();
if (username) {
PDF_set_info(myPDF,"Author",username);
free(username);
}
if (outstr)
PDF_set_info(myPDF,"Title",outstr); /* FIXME: use 'set title', if any? */
PDF_set_info(myPDF,"Subject","gnuplot plot");
if (gpversionstring)
free(gpversionstring);
PDF_LineType = LT_UNDEFINED;
/* set current font to default */
strcpy(PDF_fontNameCur, PDF_fontNameDef);
PDF_fontSizeCur = PDF_fontSizeDef;
#if !HAVE_OLD_LIBPDF
PDF_DefinePatterns();
#endif
/* Have to start the first page now, in order to know the actual
* size of the selected font */
PDF_graphics();
/* set h_char, v_char*/
term->h_char = PDF_fontAvWidth;
term->v_char = (PDF_fontAscent + PDF_fontDescent + PDF_fontLeading);
/* set h_tic, v_tic*/
term->h_tic = term->v_tic = 3 * PDF_RESOLUTION;
/* initialize terminal's pointsize from "set pointsize" value */
term_pointsize = pointsize;
/* Initialize other default settings */
PDF_setlinecap(myPDF, PDF_LineCap);
PDF_setlinejoin(myPDF, PDF_LineCap); /* round+round or butt+mitre */
}
TERM_PUBLIC void
PDF_graphics ()
{
if (PDF_pageIsOpen)
return; /* already open --> nothing to do */
PDF_pathIsOpen = FALSE;
PDF_xLast = PDF_yLast = UINT_MAX;
/* set size of canvas */
if (!pdf_explicit_size) {
term->xmax = PDF_XMAX;
term->ymax = PDF_YMAX;
}
PDF_begin_page(myPDF, (double)term->xmax / PDF_RESOLUTION,
(double)term->ymax / PDF_RESOLUTION);
PDF_scale(myPDF, 1.0/PDF_RESOLUTION, 1.0/PDF_RESOLUTION);
if (title.text && title.text[0])
/* a title has been set --> use it as the bookmark name, too */
PDF_add_bookmark(myPDF, title.text, 0, 1);
PDF_pageIsOpen = TRUE;
PDF_SetFont();
}
TERM_PUBLIC void
PDF_text ()
{
PDF_PathClose();
PDF_end_page(myPDF);
PDF_pageIsOpen = FALSE;
}
TERM_PUBLIC void
PDF_reset ()
{
assert(PDF_pageIsOpen == FALSE);
#ifdef HAVE_LIBPDF_OPEN_FILE
PDF_close(myPDF);
#else
PDF_end_document(myPDF, "");
#endif /* HAVE_LIBPDF_OPEN_FILE */
PDF_delete(myPDF);
myPDF = NULL;
}
TERM_PUBLIC void
PDF_linetype (int linetype)
{
int dash = linetype % 8;
linetype = PDF_Pen_RealID(linetype);
if (linetype == PDF_LineType)
return;
PDF_PathClose ();
PDF_LineType = linetype;
if (PDF_monochrome) {
PDF_current_gray = 0.0;
PDF_setgray(myPDF, PDF_current_gray);
} else {
unsigned int irgb = pm3d_color_names_tbl[1+linetype].value;
PDF_current_rgb.r = (double)((irgb >> 16) & 0xff) / 255.;
PDF_current_rgb.g = (double)((irgb >> 8) & 0xff) / 255.;
PDF_current_rgb.b = (double)((irgb ) & 0xff) / 255.;
PDF_setrgbcolor(myPDF, PDF_current_rgb.r, PDF_current_rgb.g, PDF_current_rgb.b);
}
#ifndef HAVE_NODASH_LIBPDF
if (PDF_dashedlines) {
char dashtype[64];
float dl = 8.0 * PDF_dashlength_factor;
switch (dash) {
default:
case 0: PDF_setdash(myPDF, 0.0, 0.0);
return;
case 1: sprintf(dashtype,"dasharray={%4.1f %4.1f}",
dl*dash1[0],dl*dash1[1]);
break;
case 2: sprintf(dashtype,"dasharray={%4.1f %4.1f}",
dl*dash2[0],dl*dash2[1]);
break;
case 3: sprintf(dashtype,"dasharray={%4.1f %4.1f}",
dl*dash3[0],dl*dash3[1]);
break;
case 4: sprintf(dashtype,"dasharray={%4.1f %4.1f %4.1f %4.1f}",
dl*dash4[0],dl*dash4[1],dl*dash4[2],dl*dash4[3]);
break;
case 5: sprintf(dashtype,"dasharray={%4.1f %4.1f %4.1f %4.1f}",
dl*dash5[0],dl*dash5[1],dl*dash5[2],dl*dash5[3]);
break;
case 6: sprintf(dashtype,"dasharray={%4.1f %4.1f %4.1f %4.1f}",
dl*dash6[0],dl*dash6[1],dl*dash6[2],dl*dash6[3]);
break;
case 7: sprintf(dashtype,"dasharray={%4.1f %4.1f %4.1f %4.1f %4.1f %4.1f}",
dl*dash7[0],dl*dash7[1],dl*dash7[2],dl*dash7[3],dl*dash7[4],dl*dash7[5]);
break;
}
PDF_setdashpattern(myPDF,dashtype);
}
#endif
}
TERM_PUBLIC void
PDF_linewidth (double linewidth)
{
PDF_PathClose();
PDF_LineWidth = PDF_RESOLUTION * PDF_linewidth_factor * linewidth / 4.0;
if (PDF_LineWidth < 0.1)
PDF_LineWidth = 0.1;
PDF_setlinewidth(myPDF, PDF_LineWidth);
}
TERM_PUBLIC void
PDF_move (unsigned int x, unsigned int y)
{
if (PDF_pathIsOpen && x == PDF_xLast && y == PDF_yLast)
return;
PDF_PathOpen ();
PDF_moveto(myPDF, x, y);
PDF_xLast = x;
PDF_yLast = y;
}
TERM_PUBLIC void
PDF_vector (unsigned int x, unsigned int y)
{
if (PDF_pathIsOpen && x == PDF_xLast && y == PDF_yLast)
return;
if (!PDF_pathIsOpen) {
PDF_PathOpen ();
PDF_moveto(myPDF, PDF_xLast, PDF_yLast);
}
PDF_lineto(myPDF, x, y);
PDF_xLast = x;
PDF_yLast = y;
}
/* Helper function. Many symbols have an additional dot in their
* center, so isolate its drawing into a separate function. */
static GP_INLINE void
PDF_dot (unsigned int x, unsigned int y)
{
/* Imitate PS's way of creating a small dot by a zero-length line
* segment with rounded endpoints */
PDF_setlinecap(myPDF, 1); /* rounded ends */
PDF_moveto(myPDF, x, y);
PDF_lineto(myPDF, x, y);
PDF_stroke(myPDF);
PDF_setlinecap(myPDF, PDF_LineCap); /* restore ends */
}
TERM_PUBLIC void
PDF_point (unsigned int x, unsigned int y, int number)
{
PDF_PathClose ();
PDF_save(myPDF);
if (number < 0 || term_pointsize <= 0) {
/* Treat all negative point sizes as dots */
PDF_dot(x, y);
} else {
/* Change coordinate system so the point symbols themselves
* can be drawn without depending on position or size (-->
* better compression and less coding for gnuplot) */
/* NB: I use the do_pointsize() default implementation, which
* just stores the last set pointsize into `term_pointsize',
* to avoid introducing another static driver-local variable
* */
PDF_translate(myPDF, x, y);
PDF_scale(myPDF, term->h_tic / 2.0 * term_pointsize,
term->v_tic / 2.0 * term_pointsize);
/* Correct linewidth to counter the scaling effect --- assume
* h_tic is usable, to avoid having to average h_ and v_tic */
PDF_setlinewidth(myPDF,
PDF_LineWidth / (term->h_tic / 2.0 * term_pointsize));
switch (number %= PDF_NUM_POINTTYPES) {
case 0: /* Plus */
PDF_moveto(myPDF, -1, 0);
PDF_lineto(myPDF, 1, 0);
PDF_moveto(myPDF, 0, -1);
PDF_lineto(myPDF, 0, 1);
PDF_stroke(myPDF);
break;
case 2: /* Star */
PDF_moveto(myPDF, -1, 0);
PDF_lineto(myPDF, 1, 0);
PDF_moveto(myPDF, 0, -1);
PDF_lineto(myPDF, 0, 1);
/* FALLTHROUGH */
case 1: /* Cross */
PDF_moveto(myPDF, -1, -1);
PDF_lineto(myPDF, 1, 1);
PDF_moveto(myPDF, 1, -1);
PDF_lineto(myPDF, -1, 1);
PDF_stroke(myPDF);
break;
/* For each x = 0..5, 4 shapes are defined:
* 3 + 2*x --> hollow symbol with a dot at its center
* 4 + 2*x --> solid symbol filled in linetype's color
* 63 + x --> hollow symbol without the center dot
* 69 + x --> symbol filled with white --> opaque symbol */
case 63+0: /* BoxEmpty */
case 3+2*0: /* Box */
PDF_moveto(myPDF, -1, -1);
PDF_lineto(myPDF, 1, -1);
PDF_lineto(myPDF, 1, 1);
PDF_lineto(myPDF, -1, 1);
PDF_closepath_stroke(myPDF);
if (number == 3) PDF_dot(0,0);
break;
case 69+0: /* BoxWhitefilled */
PDF_setgray_fill(myPDF, 1);
/* FALLTHROUGH */
case 4+2*0: /* BoxFilled */
PDF_moveto(myPDF, -1, -1);
PDF_lineto(myPDF, 1, -1);
PDF_lineto(myPDF, 1, 1);
PDF_lineto(myPDF, -1, 1);
PDF_closepath_fill_stroke(myPDF);
break;
case 63+1: /* CircleEmpty */
case 3+2*1: /* Circle */
PDF_circle(myPDF, 0, 0, 1);
PDF_stroke(myPDF);
if (number == 5) PDF_dot(0,0);
break;
case 69+1: /* CircleWhitefilled */
PDF_setgray_fill(myPDF, 1);
/* FALLTHROUGH */
case 4+2*1: /* CircleFilled */
PDF_circle(myPDF, 0, 0, 1);
PDF_fill_stroke(myPDF);
break;
case 63+2: /* TriangleUpEmpty */
case 3+2*2: /* TriangleUp */
PDF_moveto(myPDF, 0, 1.12);
PDF_lineto(myPDF, -1, -0.5);
PDF_lineto(myPDF, 1, -0.5);
PDF_closepath_stroke(myPDF);
if (number == 7) PDF_dot(0,0);
break;
case 69+2: /* TriangleUpWhitefilled */
PDF_setgray_fill(myPDF, 1);
/* FALLTHROUGH */
case 4+2*2: /* TriangleUpFilled */
PDF_moveto(myPDF, 0, 1.12);
PDF_lineto(myPDF, -1, -0.5);
PDF_lineto(myPDF, 1, -0.5);
PDF_closepath_fill_stroke(myPDF);
break;
case 63+3: /* TriangleDownEmpty */
case 3+2*3: /* TriangleDown */
PDF_moveto(myPDF, 0, -1.12);
PDF_lineto(myPDF, -1, 0.5);
PDF_lineto(myPDF, 1, 0.5);
PDF_closepath_stroke(myPDF);
if (number == 9) PDF_dot(0,0);
break;
case 69+3: /* TriangleDownWhitefilled */
PDF_setgray_fill(myPDF, 1);
/* FALLTHROUGH */
case 4+2*3: /* TriangleDownFilled */
PDF_moveto(myPDF, 0, -1.12);
PDF_lineto(myPDF, -1, 0.5);
PDF_lineto(myPDF, 1, 0.5);
PDF_closepath_fill_stroke(myPDF);
break;
case 63+4: /* DiamondEmpty */
case 3+2*4: /* Diamond */
PDF_moveto(myPDF, 0, -1);
PDF_lineto(myPDF, 1, 0);
PDF_lineto(myPDF, 0, 1);
PDF_lineto(myPDF, -1, 0);
PDF_closepath_stroke(myPDF);
if (number == 11) PDF_dot(0,0);
break;
case 69+4: /* DiamondWhitefilled */
PDF_setgray_fill(myPDF, 1);
/* FALLTHROUGH */
case 4+2*4: /* DiamondFilled */
PDF_moveto(myPDF, 0, -1);
PDF_lineto(myPDF, 1, 0);
PDF_lineto(myPDF, 0, 1);
PDF_lineto(myPDF, -1, 0);
PDF_closepath_fill_stroke(myPDF);
break;
case 63+5: /* PentagonEmpty */
case 3+2*5: /* Pentagon */
PDF_moveto(myPDF, 0, 1);
PDF_lineto(myPDF, -0.95, 0.31);
PDF_lineto(myPDF, -0.58, -0.81);
PDF_lineto(myPDF, +0.58, -0.81);
PDF_lineto(myPDF, +0.95, 0.31);
PDF_closepath_stroke(myPDF);
if (number == 13) PDF_dot(0,0);
break;
case 69+5: /* PentagonWhitefilled */
PDF_setgray_fill(myPDF, 1);
/* FALLTHROUGH */
case 4+2*5: /* PentagonFilled */
PDF_moveto(myPDF, 0, 1);
PDF_lineto(myPDF, -0.95, 0.31);
PDF_lineto(myPDF, -0.58, -0.81);
PDF_lineto(myPDF, +0.58, -0.81);
PDF_lineto(myPDF, +0.95, 0.31);
PDF_closepath_fill_stroke(myPDF);
break;
/* 15 + (0..15): circles with varying parts of'em filled. The added
* number is a bit-pattern of the 4 quadrants: 1 signals a quadrant
* filled */
case 15+0:
PDF_moveto(myPDF, 0, 0);
PDF_lineto(myPDF, 0, 1);
PDF_arc(myPDF, 0, 0, 1, 90, 360+90);
PDF_closepath_stroke(myPDF);
break;
/* Generalize common code into a macro... */
#define CIRCLE_SINGLE_PIESLICE(x, y, angle1, angle2) \
PDF_moveto(myPDF, 0, 0); \
PDF_lineto(myPDF, (x), (y)); \
PDF_arc(myPDF, 0, 0, 1, (angle1), (angle2)); \
PDF_lineto(myPDF, 0, 0); \
PDF_closepath(myPDF); \
PDF_fill_stroke(myPDF); \
PDF_arc(myPDF, 0, 0, 1, (angle2), (angle1) + 360); \
PDF_stroke(myPDF); \
break;
#define CIRCLE_SINGLE_QUADRANT(x, y, angle) \
CIRCLE_SINGLE_PIESLICE(x, y, angle, angle+90);
case 15+1:
CIRCLE_SINGLE_QUADRANT(1, 0, 0);
case 15+2:
CIRCLE_SINGLE_QUADRANT(0, 1, 90);
case 15+4:
CIRCLE_SINGLE_QUADRANT(-1, 0, 180);
case 15+8:
CIRCLE_SINGLE_QUADRANT(0, -1, 270);
#undef CIRCLE_SINGLE_QUADRANT
#define CIRCLE_TWO_NEIGHBOR_QUADRANTS(x, y, angle) \
CIRCLE_SINGLE_PIESLICE(x, y, angle, angle+180)
case 15+3:
CIRCLE_TWO_NEIGHBOR_QUADRANTS(1, 0, 0);
case 15+6:
CIRCLE_TWO_NEIGHBOR_QUADRANTS(0, 1, 90);
case 15+12:
CIRCLE_TWO_NEIGHBOR_QUADRANTS(-1, 0, 180);
case 15+9:
CIRCLE_TWO_NEIGHBOR_QUADRANTS(0, -1, 270);
#undef CIRCLE_TWO_NEIGHBOR_QUADRANTS
#define CIRCLE_TWO_OPPOSING_QUADRANTS(x, y, angle) \
PDF_moveto(myPDF, 0, 0); \
PDF_lineto(myPDF, x, y); \
PDF_arc(myPDF, 0, 0, 1, angle, angle + 90); \
PDF_lineto(myPDF, 0, 0); \
PDF_fill_stroke(myPDF); \
PDF_moveto(myPDF, 0, 0); \
PDF_lineto(myPDF, -x, -y); \
PDF_arc(myPDF, 0, 0, 1, angle + 180, angle + 270); \
PDF_lineto(myPDF, 0, 0); \
PDF_fill_stroke(myPDF); \
PDF_arc(myPDF, 0, 0, 1, angle + 90, angle + 360); \
PDF_stroke(myPDF); \
break;
case 15+5:
CIRCLE_TWO_OPPOSING_QUADRANTS(1, 0, 0);
case 15+10:
CIRCLE_TWO_OPPOSING_QUADRANTS(0, 1, 90);
#undef CIRCLE_TWO_OPPOSING_QUADRANTS
#define CIRCLE_THREE_QUADRANTS(x, y, angle) \
CIRCLE_SINGLE_PIESLICE(x, y, angle, angle+270)
case 15+7:
CIRCLE_THREE_QUADRANTS(1, 0, 0);
case 15+14:
CIRCLE_THREE_QUADRANTS(0, 1, 90);
case 15+13:
CIRCLE_THREE_QUADRANTS(-1, 0, 180);
case 15+11:
CIRCLE_THREE_QUADRANTS(0, -1, 270);
#undef CIRCLE_THREE_QUADRANTS
#undef CIRCLE_SINGLE_PIESLICE
case 15+15:
PDF_circle(myPDF, 0, 0, 1);
PDF_closepath_fill_stroke(myPDF);
break;
/*************************************************************************/
/* 31 + (0..15): squares with different quadrants of them filled in. */
/*************************************************************************/
/*************************************************************************/
/* 47 + (0..15): diamonds with filled quadrants as given by bit pattern */
/* Diamonds are drawn as squares rotated by 45 degrees, so can use
* fall-through from diamond to squares, and re-use some macros. */
/*************************************************************************/
case 47+0:
PDF_rotate(myPDF, 45);
/* FALLTHROUGH */
case 31+0:
PDF_moveto(myPDF, 0, 0);
PDF_lineto(myPDF, 0, 1);
PDF_lineto(myPDF, -1, 1);
PDF_lineto(myPDF, -1, -1);
PDF_lineto(myPDF, 1, -1);
PDF_lineto(myPDF, 1, 1);
PDF_lineto(myPDF, 0, 1);
PDF_stroke(myPDF);
break;
case 47+15:
PDF_rotate(myPDF, 45);
/* FALLTHROUGH */
case 31+15:
PDF_moveto(myPDF, -1, 1);
PDF_lineto(myPDF, -1, -1);
PDF_lineto(myPDF, 1, -1);
PDF_lineto(myPDF, 1, 1);
PDF_closepath_fill_stroke(myPDF);
break;
/* macros defining shapes of the partly filled symbols. Done by
* rotating the starting point (x0, y0) by 90 degrees or 45 degrees
* (with length adjustment). The rotations can be done without
* trigonometric function calls, since their values are known:
* cos(90)=0, sin(90)=1, cos(45)=sin(45)=1/sqrt(2). A good compiler
* should be able to optimize away all the local variables and
* loops... */
#define SQUARE_SINGLE_PIESLICE(x0, y0, quadrants) \
{ \
int quadrant = 0; \
int x= x0, y=y0; \
PDF_moveto(myPDF, 0, 0); \
PDF_lineto(myPDF, x, y); \
/* poor man's rotation by 45 and 90 degrees around the \
* square's outline. */ \
while (quadrant++ < quadrants) { \
int dummy; \
PDF_lineto(myPDF, x-y, x+y); \
dummy = x; x = -y; y = dummy; \
} \
PDF_lineto(myPDF, x, y); \
PDF_closepath_fill_stroke(myPDF); \
PDF_moveto(myPDF, x, y); \
while (quadrant++ <= 4) { \
int dummy; \
PDF_lineto(myPDF, x-y, x+y); \
dummy = x; x = -y; y = dummy; \
} \
PDF_lineto(myPDF, x, y); \
PDF_stroke(myPDF); \
} \
break;
#define SQUARE_TWO_OPPOSING_QUADRANTS(x0, y0, angle) \
{ \
int x = x0, y = y0, dummy; \
int counter = 0; \
\
while (counter++ < 2) { \
PDF_moveto(myPDF, 0, 0); \
PDF_lineto(myPDF, x, y); \
PDF_lineto(myPDF, x-y, x+y); \
dummy = x; x = -y; y = dummy; \
PDF_lineto(myPDF, x, y); \
PDF_closepath_fill_stroke(myPDF); \
\
PDF_moveto(myPDF, x, y); \
PDF_lineto(myPDF, x-y, x+y); \
dummy = x; x = -y; y = dummy; \
PDF_lineto(myPDF, x, y); \
PDF_stroke(myPDF); \
} \
break; \
}
/* Macros for diamonds just prepend the rotation and then call those
* for squares: */
#define DIAMOND_SINGLE_PIESLICE(x, y, quadrants) \
PDF_rotate(myPDF, 45); \
SQUARE_SINGLE_PIESLICE(x, y, quadrants);
#define DIAMOND_TWO_OPPOSING_QUADRANTS(x, y, angle) \
PDF_rotate(myPDF, 45); \
SQUARE_TWO_OPPOSING_QUADRANTS(x, y, angle);
/* ... and now all the individual cases. The 'angle' arguments' are
* purely for the sake of easing cut'n'paste with the circle case */
#define SQUARE_SINGLE_QUADRANT(x, y, angle) \
SQUARE_SINGLE_PIESLICE(x, y, 1);
case 31+1:
SQUARE_SINGLE_QUADRANT(1, 0, 0);
case 31+2:
SQUARE_SINGLE_QUADRANT(0, 1, 90);
case 31+4:
SQUARE_SINGLE_QUADRANT(-1, 0, 180);
case 31+8:
SQUARE_SINGLE_QUADRANT(0, -1, 270);
#undef SQUARE_SINGLE_QUADRANT
#define SQUARE_TWO_NEIGHBOR_QUADRANTS(x, y, angle) \
SQUARE_SINGLE_PIESLICE(x, y, 2)
case 31+3:
SQUARE_TWO_NEIGHBOR_QUADRANTS(1, 0, 0);
case 31+6:
SQUARE_TWO_NEIGHBOR_QUADRANTS(0, 1, 90);
case 31+12:
SQUARE_TWO_NEIGHBOR_QUADRANTS(-1, 0, 180);
case 31+9:
SQUARE_TWO_NEIGHBOR_QUADRANTS(0, -1, 270);
#undef SQUARE_TWO_NEIGHBOR_QUADRANTS
case 31+5:
SQUARE_TWO_OPPOSING_QUADRANTS(1, 0, 0);
case 31+10:
SQUARE_TWO_OPPOSING_QUADRANTS(0, 1, 90);
#define SQUARE_THREE_QUADRANTS(x, y, angle) \
SQUARE_SINGLE_PIESLICE(x, y, 3)
case 31+7:
SQUARE_THREE_QUADRANTS(1, 0, 0);
case 31+14:
SQUARE_THREE_QUADRANTS(0, 1, 90);
case 31+13:
SQUARE_THREE_QUADRANTS(-1, 0, 180);
case 31+11:
SQUARE_THREE_QUADRANTS(0, -1, 270);
#undef SQUARE_THREE_QUADRANTS
#define DIAMOND_SINGLE_QUADRANT(x, y, angle) \
DIAMOND_SINGLE_PIESLICE(x, y, 1)
case 47+1:
DIAMOND_SINGLE_QUADRANT(1, 0, 0);
case 47+2:
DIAMOND_SINGLE_QUADRANT(0, 1, 90);
case 47+4:
DIAMOND_SINGLE_QUADRANT(-1, 0, 180);
case 47+8:
DIAMOND_SINGLE_QUADRANT(0, -1, 270);
#undef DIAMOND_SINGLE_QUADRANT
#define DIAMOND_TWO_NEIGHBOR_QUADRANTS(x, y, angle) \
DIAMOND_SINGLE_PIESLICE(x, y, 2)
case 47+3:
DIAMOND_TWO_NEIGHBOR_QUADRANTS(1, 0, 0);
case 47+6:
DIAMOND_TWO_NEIGHBOR_QUADRANTS(0, 1, 90);
case 47+12:
DIAMOND_TWO_NEIGHBOR_QUADRANTS(-1, 0, 180);
case 47+9:
DIAMOND_TWO_NEIGHBOR_QUADRANTS(0, -1, 270);
#undef DIAMOND_TWO_NEIGHBOR_QUADRANTS
case 47+5:
DIAMOND_TWO_OPPOSING_QUADRANTS(1, 0, 0);
case 47+10:
DIAMOND_TWO_OPPOSING_QUADRANTS(0, 1, 90);
#undef DIAMOND_TWO_OPPOSING_QUADRANTS
#undef SQUARE_TWO_OPPOSING_QUADRANTS
#define DIAMOND_THREE_QUADRANTS(x, y, angle) \
DIAMOND_SINGLE_PIESLICE(x, y, 3)
case 47+7:
DIAMOND_THREE_QUADRANTS(1, 0, 0);
case 47+14:
DIAMOND_THREE_QUADRANTS(0, 1, 90);
case 47+13:
DIAMOND_THREE_QUADRANTS(-1, 0, 180);
case 47+11:
DIAMOND_THREE_QUADRANTS(0, -1, 270);
#undef DIAMOND_THREE_QUADRANTS
#undef DIAMOND_SINGLE_PIESLICE
#undef SQUARE_SINGLE_PIESLICE
default:
int_warn(NO_CARET, "PDF: unknown point type number %d", number);
}
}
PDF_restore(myPDF);
PDF_xLast = x;
PDF_yLast = y;
}
TERM_PUBLIC int
PDF_justify_text (enum JUSTIFY mode)
{
PDF_TextJust = mode;
return (TRUE);
}
TERM_PUBLIC int
PDF_text_angle (int ang)
{
PDF_TextAngle = ang;
return (TRUE);
}
TERM_PUBLIC void
PDF_put_text (unsigned int x, unsigned int y, const char *str)
{
char *alignment = NULL;
double h = x, v = y;
PDF_PathClose ();
/* horizontal justification*/
switch (PDF_TextJust) {
case LEFT:
alignment = "left";
break;
case CENTRE:
alignment = "center";
break;
case RIGHT:
alignment = "right";
break;
}
if (PDF_TextAngle) {
PDF_save(myPDF);
PDF_translate(myPDF, h, v);
PDF_rotate(myPDF, PDF_TextAngle);
/* vertical justification*/
PDF_translate(myPDF, 0, -(PDF_fontAscent-PDF_fontDescent)/2);
PDF_show_boxed(myPDF, str, 0,0, 0, 0, alignment, NULL);
PDF_restore(myPDF);
} else {
/* vertical justification*/
v -= (PDF_fontAscent - PDF_fontDescent) / 2;
PDF_show_boxed(myPDF, str, h , v, 0, 0, alignment, NULL);
}
}
TERM_PUBLIC int
PDF_set_font (const char *font)
{
/* FIXME: This condition is somehow triggered by enhanced_recursion */
if (font == PDF_fontNameCur)
;
else if (!font || !(*font)) {
strcpy (PDF_fontNameCur, PDF_fontNameDef);
PDF_fontSizeCur = PDF_fontSizeDef;
} else {
int sep = strcspn(font,",");
if (sep > 0) {
strncpy(PDF_fontNameCur,font,sep);
PDF_fontNameCur[sep] = NUL;
}
if (font[sep] == ',')
sscanf(&(font[sep+1]), "%lf", &PDF_fontSizeCur);
}
PDF_PathClose();
PDF_SetFont();
term->h_char = PDF_fontAvWidth;
term->v_char = (PDF_fontAscent + PDF_fontDescent + PDF_fontLeading);
return (TRUE);
}
TERM_PUBLIC void
PDF_boxfill(int style, unsigned int x1, unsigned int y1,
unsigned int width, unsigned int height)
{
gpiPoint corner[4];
corner[0].x = x1; corner[0].y = y1;
corner[1].x = x1+width; corner[1].y = y1;
corner[2].x = x1+width; corner[2].y = y1+height;
corner[3].x = x1; corner[3].y = y1+height;
corner->style = style;
PDF_filled_polygon(4, corner);
}
TERM_PUBLIC void
PDF_filled_polygon(int points, gpiPoint* corners)
{
int i;
int fillpar = corners->style >> 4;
int style = corners->style &= 0xf;
PDF_PathClose();
PDF_save(myPDF);
switch (style) {
case FS_EMPTY: /* fill with white */
PDF_setgray(myPDF, 1);
break;
case FS_TRANSPARENT_SOLID:
#if !HAVE_OLD_LIBPDF
{
/* FIXME: This attribute will be in effect until the end of */
/* the current page. We should explicitly reset it to restore */
/* opaque fill areas as the default. But when should it be? */
char density[18];
double red = PDF_current_rgb.r;
double green = PDF_current_rgb.g;
double blue = PDF_current_rgb.b;
sprintf(density,"opacityfill=%4.2f", (double)fillpar*0.01);
i = PDF_create_gstate(myPDF, density);
PDF_set_gstate(myPDF, i);
if (PDF_monochrome)
PDF_setgray_fill(myPDF, PDF_current_gray);
else
PDF_setrgbcolor_fill(myPDF, red, green, blue);
break;
}
#endif
case FS_SOLID:
{
double fact = (double)fillpar * 0.01;
double _fact = (double)(100-fillpar) * 0.01;
double red = PDF_current_rgb.r * fact + _fact;
double green = PDF_current_rgb.g * fact + _fact;
double blue = PDF_current_rgb.b * fact + _fact;
if (PDF_monochrome)
PDF_setgray_fill(myPDF, PDF_current_gray);
else
PDF_setrgbcolor_fill(myPDF, red, green, blue);
}
break;
#if !HAVE_OLD_LIBPDF
case FS_PATTERN:
fillpar = fillpar % (PDF_patterns + 1) /* 0 == white */;
/* Fill in solid background before drawing pattern */
/* NOTE: kpdf/xpdf would accept this as part of the pattern definition */
/* but acroread does not. So for compatibility we do the fill in */
/* a separate step, despite its inefficiency. */
if (fillpar != 0) {
PDF_setcolor(myPDF, "fill", "rgb", 1, 1, 1, 0 /* unused */);
PDF_moveto(myPDF, corners[0].x, corners[0].y);
for (i=1; i<points; i++)
PDF_lineto(myPDF, corners[i].x, corners[i].y);
PDF_lineto(myPDF, corners[0].x, corners[0].y);
PDF_fill(myPDF);
PDF_restore(myPDF);
PDF_save(myPDF);
}
/* NOTE: Fall through to the actual pattern code */
case FS_TRANSPARENT_PATTERN:
fillpar = fillpar % (PDF_patterns + 1) /* 0 == white */;
switch (fillpar) {
case 0:
/* fill with white */
PDF_setcolor(myPDF, "fill", "rgb", 1, 1, 1, 0 /* unused */);
break;
default:
PDF_setcolor(myPDF, "fill", "pattern", PDF_patternHandles[fillpar - 1], 0, 0, 0);
}
break;
#endif
default:
break;
}
PDF_moveto(myPDF, corners[0].x, corners[0].y);
for (i=1; i<points; i++)
PDF_lineto(myPDF, corners[i].x, corners[i].y);
PDF_lineto(myPDF, corners[0].x, corners[0].y);
PDF_fill(myPDF);
PDF_restore(myPDF);
}
TERM_PUBLIC int
PDF_make_palette(t_sm_palette *palette)
{
if (palette == NULL) {
/* pdf can do continuous colors */
return 0;
}
return 0;
}
TERM_PUBLIC void
PDF_set_color(t_colorspec *colorspec)
{
if (colorspec->type == TC_LT) {
unsigned int irgb = pm3d_color_names_tbl[ 1 + PDF_Pen_RealID(colorspec->lt) ].value;
PDF_current_rgb.r = (double)((irgb >> 16) & 0xff) / 255.;
PDF_current_rgb.g = (double)((irgb >> 8) & 0xff) / 255.;
PDF_current_rgb.b = (double)((irgb ) & 0xff) / 255.;
PDF_current_gray = 0.0; /* monochrome mode only */
} else if (colorspec->type == TC_FRAC) {
rgb1maxcolors_from_gray( colorspec->value, &PDF_current_rgb);
PDF_current_gray = colorspec->value; /* monochrome mode only */
} else if (colorspec->type == TC_RGB) {
PDF_current_rgb.r = (double)((colorspec->lt >> 16 ) & 255) / 255.;
PDF_current_rgb.g = (double)((colorspec->lt >> 8 ) & 255) / 255.;
PDF_current_rgb.b = (double)(colorspec->lt & 255) / 255.;
} else
return;
/* make sure that the path is stroked with the current color
* before changing the color */
PDF_PathClose();
if (PDF_monochrome && colorspec->type != TC_RGB)
PDF_setgray(myPDF, PDF_current_gray); /* FIXME - Should this be NTSC(current_rgb)? */
else
PDF_setrgbcolor(myPDF, PDF_current_rgb.r, PDF_current_rgb.g, PDF_current_rgb.b);
/* mark linetype invalid so that the color will be
* set when PDF_linetype() is called next */
PDF_LineType = LT_UNDEFINED;
}
TERM_PUBLIC void
PDF_previous_palette()
{
}
TERM_PUBLIC void
PDF_image (unsigned int M, unsigned int N, coordval * image, gpiPoint * corner, t_imagecolor color_mode)
{
unsigned char *pixel;
float xscale, yscale;
int i, im;
/* Allocate memory to hold a copy of the entire image in raw RGB format */
unsigned char *rawrgb = gp_alloc( M*N*3, "Raw RGB image");
/* Convert the input image into raw RGB 24-bit color representation */
if (color_mode == IC_RGB) {
for (i=0, pixel=rawrgb; i<N*M*3;) {
rgb_color rgb1;
rgb255_color rgb255;
rgb1.r = image[i++];
rgb1.g = image[i++];
rgb1.b = image[i++];
rgb255_from_rgb1( rgb1, &rgb255 );
*pixel++ = rgb255.r;
*pixel++ = rgb255.g;
*pixel++ = rgb255.b;
}
} else {
for (i=0, pixel=rawrgb; i< N*M; i++) {
if (isnan(image[i])) {
/* Transparent would be better! */
*pixel++ = 255;
*pixel++ = 255;
*pixel++ = 255;
} else {
rgb255_color rgb;
rgb255maxcolors_from_gray(image[i], &rgb);
*pixel++ = rgb.r;
*pixel++ = rgb.g;
*pixel++ = rgb.b;
}
}
}
/* Describe this image to PDF library */
im = PDF_open_image( myPDF, "raw", "memory", (char *)rawrgb,
(long)(M*N*3), (int)M, (int)N,
3, 8, /* 3 colors, 8 bits each */
"");
/* Clip to bounding box requested */
PDF_save(myPDF);
PDF_moveto(myPDF, corner[2].x, corner[2].y);
PDF_lineto(myPDF, corner[2].x, corner[3].y);
PDF_lineto(myPDF, corner[3].x, corner[3].y);
PDF_lineto(myPDF, corner[3].x, corner[2].y);
PDF_closepath(myPDF);
PDF_clip(myPDF);
/* Scale and copy into the main PDF image */
xscale = fabs((float)corner[1].x - (float)corner[0].x) / (float)M;
yscale = fabs((float)corner[1].y - (float)corner[0].y) / (float)N;
PDF_translate(myPDF, corner[0].x, corner[0].y);
PDF_scale(myPDF, xscale, yscale);
PDF_translate(myPDF, 0, -(float)N);
PDF_place_image(myPDF, im, 0.0, 0.0, 1.0 );
PDF_restore(myPDF);
/* Clean up */
PDF_close_image(myPDF, im);
free(rawrgb);
}
/*
* Ethan A Merritt November 2003
* - support for enhanced text mode
* BUGS:
* - The baseline is not consistent if font size changes within a string.
* - Placement of overprinted characters is not correct.
* - libpdf exits if the requested font is not recognized.
* - I implement text-rotation by hand, but it may be possible to use
* a gsave/translate/rotate/.../grestore sequence instead.
*/
static TBOOLEAN ENHpdf_opened_string;
/* used in determining height of processed text */
static float ENHpdf_base;
/* use these so that we don't over-write the current font settings in pdf_state */
static double ENHpdf_fontsize;
static char *ENHpdf_font;
/* A global flag that tells us this run is just to determine text size */
static TBOOLEAN ENHpdf_sizeonly = FALSE;
static TBOOLEAN ENHpdf_show = TRUE;
static int ENHpdf_overprint = 0;
static TBOOLEAN ENHpdf_widthflag = FALSE;
static unsigned int ENHpdf_xsave, ENHpdf_ysave;
/* Start a new string fragment */
TERM_PUBLIC void
ENHPDF_OPEN(
char *fontname,
double fontsize, double base,
TBOOLEAN widthflag, TBOOLEAN showflag,
int overprint)
{
/* If the overprint code requests a save or request, that's all we do */
if (overprint == 3) {
ENHpdf_xsave = PDF_xLast;
ENHpdf_ysave = PDF_yLast;
return;
} else if (overprint == 4) {
PDF_move(ENHpdf_xsave, ENHpdf_ysave);
return;
}
if (!ENHpdf_opened_string) {
ENHpdf_opened_string = TRUE;
enhanced_cur_text = &enhanced_text[0];
ENHpdf_font = fontname;
ENHpdf_fontsize = fontsize;
ENHpdf_base = base * PDF_RESOLUTION;
ENHpdf_show = showflag;
ENHpdf_overprint = overprint;
ENHpdf_widthflag = widthflag;
}
}
/* Write a string fragment and update the current position */
TERM_PUBLIC void
ENHPDF_FLUSH()
{
int x, y;
float stringlength;
if (ENHpdf_opened_string) {
ENHpdf_opened_string = FALSE;
*enhanced_cur_text = '\0';
x = PDF_xLast;
y = PDF_yLast;
x -= sin((double)PDF_TextAngle * M_PI_2/90.) * ENHpdf_base;
y += cos((double)PDF_TextAngle * M_PI_2/90.) * ENHpdf_base;
x += sin((double)PDF_TextAngle * M_PI_2/90.) * (double)PDF_fontAvWidth/2.;
y -= cos((double)PDF_TextAngle * M_PI_2/90.) * (double)PDF_fontAvWidth/2.;
/* Select current font for enhanced text fragment, then restore context */
if (1) {
char save_fontname[MAX_ID_LEN + 1];
double save_fontsize = PDF_fontSizeCur;
strcpy(save_fontname,PDF_fontNameCur);
PDF_fontSizeCur = ENHpdf_fontsize / PDF_fontscale;
PDF_set_font(ENHpdf_font);
strcpy(PDF_fontNameCur,save_fontname);
PDF_fontSizeCur = save_fontsize;
}
/* Find length of string in current font */
stringlength = PDF_stringwidth(myPDF, enhanced_text,
PDF_currentFontHandle, ENHpdf_fontsize);
stringlength *= PDF_RESOLUTION;
if (ENHpdf_show && !ENHpdf_sizeonly) {
if (PDF_TextAngle == 0 ) {
/* PDF_show(myPDF, enhanced_text); */
PDF_show_boxed(myPDF, enhanced_text, x, y, 0, 0, "left", NULL);
} else {
PDF_save(myPDF);
PDF_translate(myPDF, x, y);
PDF_rotate(myPDF, PDF_TextAngle);
/* vertical justification*/
PDF_translate(myPDF, 0, -(PDF_fontAscent-PDF_fontDescent)/2);
PDF_show_boxed(myPDF, enhanced_text, 0, 0, 0, 0, "left", NULL);
PDF_restore(myPDF);
}
}
if (ENHpdf_overprint == 1) {
PDF_xLast += stringlength * cos((double)PDF_TextAngle * M_PI_2/90.) / 2.;
PDF_yLast += stringlength * sin((double)PDF_TextAngle * M_PI_2/90.);
} else if (ENHpdf_widthflag) {
PDF_xLast += stringlength * cos((double)PDF_TextAngle * M_PI_2/90.);
PDF_yLast += stringlength * sin((double)PDF_TextAngle * M_PI_2/90.);
}
}
}
TERM_PUBLIC void
ENHPDF_put_text(unsigned int x, unsigned int y, const char *str)
{
char *original_string = (char *)str;
if (ignore_enhanced_text) {
PDF_put_text(x,y,str);
return;
}
if (!str || !strlen(str))
return;
/* if there are no magic characters, we should just be able
* punt the string to PDF_put_text()
*/
if (!strpbrk(str, "{}^_@&~")) {
/* do something to ensure default font is selected */
PDF_put_text(x,y,str);
return;
}
PDF_move(x, y);
PDF_PathClose();
PDF_save(myPDF);
/* FIXME - Is this the way to do it?????
if (PDF_TextAngle != 0)
ENHPDF_DEBUG(("currentpoint gsave translate %d rotate 0 0 moveto\n", PDF_TextAngle));
*/
/* set up the global variables needed by enhanced_recursion() */
enhanced_fontscale = PDF_fontscale;
strncpy(enhanced_escape_format,"%c",sizeof(enhanced_escape_format));
ENHpdf_opened_string = FALSE;
/* EAM - Software text justification requires two passes */
if (PDF_TextJust == RIGHT || PDF_TextJust == CENTRE)
ENHpdf_sizeonly = TRUE;
/* Set the recursion going. We say to keep going until a
* closing brace, but we don't really expect to find one.
* If the return value is not the nul-terminator of the
* string, that can only mean that we did find an unmatched
* closing brace in the string. We increment past it (else
* we get stuck in an infinite loop) and try again.
*/
while (*(str = enhanced_recursion((char *)str, TRUE,
PDF_fontNameCur, PDF_fontSizeCur * PDF_fontscale,
0.0, TRUE, TRUE, 0))) {
(term->enhanced_flush)();
/* I think we can only get here if *str == '}' */
enh_err_check(str);
if (!*++str)
break; /* end of string */
/* else carry on and process the rest of the string */
}
PDF_restore(myPDF);
/* We can do text justification by running the entire top level string */
/* through 2 times, with the ENHpdf_sizeonly flag set the first time. */
/* After seeing where the final position is, we then offset the start */
/* point accordingly and run it again. */
if (PDF_TextJust == RIGHT || PDF_TextJust == CENTRE) {
int justification = PDF_TextJust;
int x_offset = PDF_xLast - x;
int y_offset = 0;
if (PDF_TextAngle != 0)
y_offset = PDF_yLast - y;
PDF_TextJust = LEFT;
ENHpdf_sizeonly = FALSE;
if (justification == RIGHT) {
ENHPDF_put_text(x - x_offset, y - y_offset, original_string);
} else if (justification == CENTRE) {
ENHPDF_put_text(x - x_offset/2, y - y_offset/2, original_string);
}
PDF_TextJust = justification;
}
}
#endif /* TERM_BODY */
#ifdef TERM_TABLE
TERM_TABLE_START (pdf_driver)
"pdf", "PDF (Portable Document File) file driver",
0 /* xmax */ , 0 /* ymax */ , 0 /* vchar */ , 0 /* hchar */ ,
0 /* vtic */ , 0 /* htic */ ,
PDF_options, PDF_init, PDF_reset, PDF_text, null_scale, PDF_graphics,
PDF_move, PDF_vector, PDF_linetype, PDF_put_text, PDF_text_angle,
PDF_justify_text, PDF_point, do_arrow, PDF_set_font, do_pointsize,
TERM_BINARY|TERM_CAN_DASH|TERM_LINEWIDTH|TERM_FONTSCALE,
0 /* suspend */, 0 /* resume */ , PDF_boxfill, PDF_linewidth
# ifdef USE_MOUSE
, 0, 0, 0, 0, 0 /* no mouse support for pdf */
# endif
, PDF_make_palette,
PDF_previous_palette,
PDF_set_color,
PDF_filled_polygon
, PDF_image
, ENHPDF_OPEN, ENHPDF_FLUSH, do_enh_writec
TERM_TABLE_END (pdf_driver)
#undef LAST_TERM
#define LAST_TERM pdf_driver
#endif /* TERM_TABLE */
#endif /* TERM_PROTO_ONLY */
#ifdef TERM_HELP
START_HELP(pdf)
"1 pdf",
"?commands set terminal pdf",
"?set terminal pdf",
"?set term pdf",
"?terminal pdf",
"?term pdf",
"?pdf",
" [DEPRECATED] This terminal uses the non-free library PDFlib (GmbH Munchen)"
" to produce files in Portable Document Format. Unless you have a commercial",
" license for PDFlib and need some special feature it provides you would do",
" better to use the cairopdf terminal instead. Gnuplot can also export PDF",
" files from wxt or qt interactive terminal sessions.",
"",
" Syntax:",
" set terminal pdf {monochrome|color|colour}",
" {{no}enhanced}",
" {fname \"<font>\"} {fsize <fontsize>}",
" {font \"<fontname>{,<fontsize>}\"} {fontscale <scale>}",
" {linewidth <lw>} {rounded|butt}",
" {dl <dashlength>}}",
" {size <XX>{unit},<YY>{unit}}",
"",
" The default is to use a different color for each line type. Selecting",
" `monochome` will use black for all linetypes, Even in in mono mode",
" you can still use explicit colors for filled areas or linestyles.",
"",
" where <font> is the name of the default font to use (default Helvetica)",
" and <fontsize> is the font size (in points, default 12).",
" For help on which fonts are available or how to install new ones, please",
" see the documentation for your local installation of pdflib.",
"",
" The `enhanced` option enables enhanced text processing features",
" (subscripts, superscripts and mixed fonts). See `enhanced`.",
"",
" The width of all lines in the plot can be increased by the factor <n>",
" specified in `linewidth`. Similarly `dashlength` is a multiplier for the",
" default dash spacing.",
"",
" `rounded` sets line caps and line joins to be rounded; `butt` is the",
" default, butt caps and mitered joins.",
"",
" The default size for PDF output is 5 inches by 3 inches. The `size` option",
" changes this to whatever the user requests. By default the X and Y sizes",
" are taken to be in inches, but other units are possible (currently only cm).",
""
END_HELP(pdf)
#endif