--- /dev/null
+/* Hello, Emacs, this is -*-C-*-
+ * $Id: pdf.trm,v 1.68.2.9 2008/12/12 07:14:11 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 *));
+#ifdef WITH_IMAGE
+TERM_PUBLIC void PDF_image __PROTO((unsigned, unsigned, coordval *, gpiPoint *, t_imagecolor));
+#endif
+
+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_dashedlines = FALSE; /* solid or dashed? */
+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) */
+
+/* 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 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_15) {
+ pdfenc = "iso8859-15";
+ } else if (encoding == S_ENC_CP1250) {
+ pdfenc = "cp1250";
+ }
+
+ 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);
+
+ /* Ask PDFlib for the actual numbers */
+ PDF_fontAscent = (int) (PDF_RESOLUTION * PDF_fontSizeCur * PDF_get_value(myPDF, "ascender", 0));
+ PDF_fontDescent = (int) (- PDF_RESOLUTION * PDF_fontSizeCur * PDF_get_value(myPDF, "descender", 0));
+ PDF_fontLeading = (int) (PDF_RESOLUTION * PDF_fontSizeCur * 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)
+ / 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 ()
+{
+ struct value a;
+
+ /* Annoying hack to handle the case of 'set termoption' after */
+ /* we have already initialized the terminal. */
+ if (c_token != 2)
+ pdf_explicit_size = FALSE;
+
+ 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 (const_express (&a));
+ continue;
+ }
+
+ if (equals(c_token, "lw") || almost_equals(c_token, "linew$idth")) {
+ c_token++;
+
+ if (END_OF_COMMAND)
+ int_error(c_token, "expecting line width");
+ PDF_linewidth_factor = real (const_express (&a));
+ if (PDF_linewidth_factor <= 0)
+ PDF_linewidth_factor = 0.1;
+ continue;
+ }
+
+ if (almost_equals(c_token, "rou$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$our")) {
+ c_token++;
+ PDF_monochrome = FALSE;
+ continue;
+ }
+
+ if (almost_equals(c_token, "mono$chrome")) {
+ c_token++;
+ PDF_monochrome = TRUE;
+ continue;
+ }
+
+ if (equals(c_token, "dl") || almost_equals(c_token, "dashl$ength")) {
+ c_token++;
+ if (END_OF_COMMAND)
+ int_error(c_token, "expecting dashlength multiplier");
+ PDF_dashlength_factor = real(const_express(&a));
+ if (PDF_dashlength_factor < 0.0)
+ PDF_dashlength_factor = 1.0;
+ continue;
+ }
+
+ if (equals(c_token, "solid")) {
+ c_token++;
+ PDF_dashedlines = FALSE;
+ continue;
+ }
+
+ if (equals(c_token, "size")) {
+ float xmax_t, ymax_t;
+ c_token++;
+ pdf_explicit_size = TRUE;
+ pdf_explicit_units = parse_term_size(&xmax_t, &ymax_t, INCHES);
+ term->xmax = xmax_t*PDF_RESOLUTION*72./gp_resolution;
+ term->ymax = ymax_t*PDF_RESOLUTION*72./gp_resolution;
+ break;
+ }
+
+#ifdef HAVE_NODASH_LIBPDF
+ int_warn(NO_CARET,"gnuplot was linked against a version of pdflib with no dash or pattern support");
+#else
+ if (almost_equals(c_token, "dash$ed")) {
+ c_token++;
+ PDF_dashedlines = TRUE;
+ continue;
+ }
+#endif
+
+ 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 linewidth %3.1f %s ",
+ PDF_monochrome ? "monochrome " : " ",
+ term->put_text == ENHPDF_put_text ? "enhanced" : "noenhanced",
+ PDF_fontNameDef, PDF_fontSizeDef, PDF_linewidth_factor,
+ PDF_LineCap == 1 ? "rounded" : "");
+ if (PDF_dashedlines)
+ sprintf(&(term_options[strlen(term_options)]), "dashed 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 {
+ struct rgb *this_color = web_color_rgbs + 1 + linetype;
+ PDF_current_rgb.r = this_color->r / 255.0;
+ PDF_current_rgb.g = this_color->g / 255.0;
+ PDF_current_rgb.b = this_color->b / 255.0;
+ 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;
+
+ PDF_PathOpen ();
+ 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) {
+ /* 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)
+{
+
+ 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_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 */;
+ 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) {
+ struct rgb *this_color = web_color_rgbs + 1 + PDF_Pen_RealID(colorspec->lt);
+ PDF_current_rgb.r = this_color->r / 255.0;
+ PDF_current_rgb.g = this_color->g / 255.0;
+ PDF_current_rgb.b = this_color->b / 255.0;
+ 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()
+{
+}
+
+#ifdef WITH_IMAGE
+TERM_PUBLIC void
+PDF_image (unsigned M, unsigned 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++) {
+ 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);
+
+}
+#endif
+
+
+/*
+ * 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_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_max_height = -1000;
+ enhanced_min_height = 1000;
+ enhanced_fontscale = 1.0;
+ 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,
+ 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);
+
+ enhanced_max_height += enhanced_min_height;
+
+ /* 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,
+ 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
+#ifdef WITH_IMAGE
+ , PDF_image
+#endif
+ , 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",
+" This terminal produces files in the Adobe Portable Document Format",
+" (PDF), useable for printing or display with tools like Acrobat Reader",
+"",
+" Syntax:",
+" set terminal pdf {monochrome|color|colour}",
+" {{no}enhanced}",
+" {fname \"<font>\"} {fsize <fontsize>}",
+" {font \"<fontname>{,<fontsize>}\"}",
+" {linewidth <lw>} {rounded|butt}",
+" {solid|dashed} {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, in which case you probably",
+" want to select `dashed` to distinguish line types. 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
projects / gnuplot / blobdiff