1 #define __SP_PS_C__
3 /** \file
4 * PostScript printing.
5 */
6 /*
7 * Authors:
8 * Lauris Kaplinski <lauris@kaplinski.com>
9 * bulia byak <buliabyak@users.sf.net>
10 *
11 * Basic printing code, EXCEPT image and
12 * ascii85 filter is in public domain
13 *
14 * Image printing and Ascii85 filter:
15 *
16 * Copyright (C) 2006 Johan Engelen
17 * Copyright (C) 1997-98 Peter Kirchgessner
18 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
19 * George White <aa056@chebucto.ns.ca>
20 * Austin Donnelly <austin@gimp.org>
21 *
22 * Licensed under GNU GPL
23 */
25 /* Plain Print */
27 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
31 #include <signal.h>
32 #include <errno.h>
34 #include <libnr/nr-matrix-fns.h>
36 #include <glib/gmem.h>
37 #include <glib/gstrfuncs.h>
38 #include <gtk/gtkstock.h>
39 #include <gtk/gtkvbox.h>
40 #include <gtk/gtkframe.h>
41 #include <gtk/gtkradiobutton.h>
42 #include <gtk/gtkcombo.h>
43 #include <gtk/gtklabel.h>
44 #include <gtk/gtkentry.h>
45 #include <gtk/gtktooltips.h>
47 #include <glibmm/i18n.h>
48 #include "display/nr-arena-item.h"
49 #include "display/canvas-bpath.h"
50 #include "sp-item.h"
51 #include "style.h"
52 #include "sp-linear-gradient.h"
53 #include "sp-radial-gradient.h"
55 #include "libnrtype/font-instance.h"
56 #include "libnrtype/font-style-to-pos.h"
58 #include <unit-constants.h>
60 #include "ps.h"
61 #include "extension/system.h"
62 #include "extension/print.h"
64 #include "io/sys.h"
66 #include <ft2build.h>
67 #include FT_FREETYPE_H
68 #include FT_XFREE86_H
69 #include <pango/pangoft2.h>
70 #include <string>
71 #include <iostream>
72 #include <fstream>
73 #include <cstring>
74 #include <cstdio>
75 #include <cstdlib>
76 #include <cmath>
78 #include <2geom/sbasis-to-bezier.h>
79 #include <2geom/bezier-curve.h>
80 #include <2geom/hvlinesegment.h>
81 #include "helper/geom-curves.h"
83 /*
84 using std::atof;
85 using std::ceil;
86 using std::fclose;
87 using std::ferror;
88 using std::fflush;
89 using std::fgetc;
90 using std::fprintf; --> this line will result 'std::libintl_fprintf' has not been declared
91 using std::fputc;
92 using std::fseek;
93 using std::ifstream;
94 using std::ios;
95 using std::memset;
96 using std::strchr;
97 using std::strcmp;
98 using std::strerror;
99 using std::tmpfile;
100 */
101 using namespace std;
103 namespace Inkscape {
104 namespace Extension {
105 namespace Internal {
107 PrintPS::PrintPS() :
108 _stream(NULL),
109 _dpi(72),
110 _bitmap(false)
111 {
112 //map font types
113 _fontTypesMap["Type 1"] = FONT_TYPE1;
114 _fontTypesMap["TrueType"] = FONT_TRUETYPE;
115 //TODO: support other font types (cf. embed_font())
116 }
118 PrintPS::~PrintPS(void)
119 {
120 /* fixme: should really use pclose for popen'd streams */
121 if (_stream) fclose(_stream);
122 if(_begin_stream) fclose(_begin_stream);
123 if(_fonts) g_tree_destroy(_fonts);
125 /* restore default signal handling for SIGPIPE */
126 #if !defined(_WIN32) && !defined(__WIN32__)
127 (void) signal(SIGPIPE, SIG_DFL);
128 #endif
130 return;
131 }
133 unsigned int
134 PrintPS::setup(Inkscape::Extension::Print * mod)
135 {
136 static gchar const *const pdr[] = {"72", "75", "100", "144", "150", "200", "300", "360", "600", "1200", "2400", NULL};
138 #ifdef TED
139 Inkscape::XML::Node *repr = ((SPModule *) mod)->repr;
140 #endif
142 unsigned int ret = FALSE;
143 gchar const *destination = mod->get_param_string("destination");
145 /* Create dialog */
146 GtkTooltips *tt = gtk_tooltips_new();
147 g_object_ref((GObject *) tt);
148 gtk_object_sink((GtkObject *) tt);
150 GtkWidget *dlg = gtk_dialog_new_with_buttons(
151 destination ? _("Print Configuration") : _("Print Destination"),
152 // SP_DT_WIDGET(SP_ACTIVE_DESKTOP)->window,
153 NULL,
154 (GtkDialogFlags) (GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR | GTK_DIALOG_DESTROY_WITH_PARENT),
155 GTK_STOCK_CANCEL,
156 GTK_RESPONSE_CANCEL,
157 destination ? GTK_STOCK_GO_FORWARD : GTK_STOCK_PRINT,
158 GTK_RESPONSE_OK,
159 NULL);
161 gtk_dialog_set_default_response(GTK_DIALOG(dlg), GTK_RESPONSE_OK);
163 GtkWidget *vbox = GTK_DIALOG(dlg)->vbox;
164 gtk_container_set_border_width(GTK_CONTAINER(vbox), 4);
165 /* Print properties frame */
166 GtkWidget *f = gtk_frame_new(_("Print properties"));
167 gtk_box_pack_start(GTK_BOX(vbox), f, FALSE, FALSE, 4);
168 GtkWidget *vb = gtk_vbox_new(FALSE, 4);
169 gtk_container_add(GTK_CONTAINER(f), vb);
170 gtk_container_set_border_width(GTK_CONTAINER(vb), 4);
171 /* Print type */
172 bool const p2bm = mod->get_param_bool("bitmap");
173 GtkWidget *rb = gtk_radio_button_new_with_label(NULL, _("Print using PostScript operators"));
174 gtk_tooltips_set_tip((GtkTooltips *) tt, rb,
175 _("Use PostScript vector operators. The resulting image is usually smaller "
176 "in file size and can be arbitrarily scaled, but alpha transparency "
177 "and patterns will be lost."), NULL);
178 if (!p2bm) gtk_toggle_button_set_active((GtkToggleButton *) rb, TRUE);
179 gtk_box_pack_start(GTK_BOX(vb), rb, FALSE, FALSE, 0);
180 rb = gtk_radio_button_new_with_label(gtk_radio_button_get_group((GtkRadioButton *) rb), _("Print as bitmap"));
181 gtk_tooltips_set_tip((GtkTooltips *) tt, rb,
182 _("Print everything as bitmap. The resulting image is usually larger "
183 "in file size and cannot be arbitrarily scaled without quality loss, "
184 "but all objects will be rendered exactly as displayed."), NULL);
185 if (p2bm) gtk_toggle_button_set_active((GtkToggleButton *) rb, TRUE);
186 gtk_box_pack_start(GTK_BOX(vb), rb, FALSE, FALSE, 0);
187 /* Resolution */
188 GtkWidget *hb = gtk_hbox_new(FALSE, 4);
189 gtk_box_pack_start(GTK_BOX(vb), hb, FALSE, FALSE, 0);
190 GtkWidget *combo = gtk_combo_new();
191 gtk_combo_set_value_in_list(GTK_COMBO(combo), FALSE, FALSE);
192 gtk_combo_set_use_arrows(GTK_COMBO(combo), TRUE);
193 gtk_combo_set_use_arrows_always(GTK_COMBO(combo), TRUE);
194 gtk_widget_set_size_request(combo, 64, -1);
195 gtk_tooltips_set_tip((GtkTooltips *) tt, GTK_COMBO(combo)->entry,
196 _("Preferred resolution (dots per inch) of bitmap"), NULL);
197 /* Setup strings */
198 GList *sl = NULL;
199 for (unsigned i = 0; pdr[i] != NULL; i++) {
200 sl = g_list_prepend(sl, (gpointer) pdr[i]);
201 }
202 sl = g_list_reverse(sl);
203 gtk_combo_set_popdown_strings(GTK_COMBO(combo), sl);
204 g_list_free(sl);
205 if (1) {
206 gchar const *val = mod->get_param_string("resolution");
207 gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(combo)->entry), val);
208 }
209 gtk_box_pack_end(GTK_BOX(hb), combo, FALSE, FALSE, 0);
210 GtkWidget *l = gtk_label_new(_("Resolution:"));
211 gtk_box_pack_end(GTK_BOX(hb), l, FALSE, FALSE, 0);
213 GtkWidget *e = NULL;
214 /* if the destination isn't already set, we must prompt for it */
215 if (!destination) {
216 /* Print destination frame */
217 f = gtk_frame_new(_("Print destination"));
218 gtk_box_pack_start(GTK_BOX(vbox), f, FALSE, FALSE, 4);
219 vb = gtk_vbox_new(FALSE, 4);
220 gtk_container_add(GTK_CONTAINER(f), vb);
221 gtk_container_set_border_width(GTK_CONTAINER(vb), 4);
223 l = gtk_label_new(_("Printer name (as given by lpstat -p);\n"
224 "leave empty to use the system default printer.\n"
225 "Use '> filename' to print to file.\n"
226 "Use '| prog arg...' to pipe to a program."));
227 gtk_box_pack_start(GTK_BOX(vb), l, FALSE, FALSE, 0);
229 e = gtk_entry_new();
230 gtk_entry_set_text(GTK_ENTRY(e), ( destination != NULL
231 ? destination
232 : "" ));
233 gtk_box_pack_start(GTK_BOX(vb), e, FALSE, FALSE, 0);
235 // pressing enter in the destination field is the same as clicking Print:
236 gtk_entry_set_activates_default(GTK_ENTRY(e), TRUE);
237 }
239 gtk_widget_show_all(vbox);
241 int const response = gtk_dialog_run(GTK_DIALOG(dlg));
243 g_object_unref((GObject *) tt);
245 if (response == GTK_RESPONSE_OK) {
246 gchar const *fn;
247 char const *sstr;
249 _bitmap = gtk_toggle_button_get_active((GtkToggleButton *) rb);
250 sstr = gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(combo)->entry));
251 _dpi = (unsigned int) MAX((int)(atof(sstr)), 1);
253 /* if the destination was prompted for, record the new value */
254 if (e) {
255 /* Arrgh, have to do something */
256 fn = gtk_entry_get_text(GTK_ENTRY(e));
257 /* skip leading whitespace, bug #1068483 */
258 while (fn && *fn==' ') { fn++; }
259 /* g_print("Printing to %s\n", fn); */
261 mod->set_param_string("destination", (gchar *)fn);
262 }
263 mod->set_param_bool("bitmap", _bitmap);
264 mod->set_param_string("resolution", (gchar *)sstr);
265 ret = TRUE;
266 }
268 gtk_widget_destroy(dlg);
270 return ret;
271 }
273 unsigned int
274 PrintPS::begin(Inkscape::Extension::Print *mod, SPDocument *doc)
275 {
276 gboolean epsexport = false;
279 _latin1_encoded_fonts.clear();
280 _newlatin1font_proc_defined = false;
282 FILE *osf = NULL;
283 FILE *osp = NULL;
284 FILE *osf_tmp = NULL;
286 gsize bytesRead = 0;
287 gsize bytesWritten = 0;
288 GError *error = NULL;
289 //check whether fonts have to be embedded in the (EPS only) output
290 bool font_embedded = mod->fontEmbedded();
291 gchar const *utf8_fn = mod->get_param_string("destination");
292 gchar *local_fn = g_filename_from_utf8( utf8_fn,
293 -1, &bytesRead, &bytesWritten, &error);
294 gchar const *fn = local_fn;
296 /* TODO: Replace the below fprintf's with something that does the right thing whether in
297 * gui or batch mode (e.g. --print=blah). Consider throwing an exception: currently one of
298 * the callers (sp_print_document_to_file, "ret = mod->begin(doc)") wrongly ignores the
299 * return code.
300 */
301 if (fn != NULL) {
302 if (*fn == '|') {
303 fn += 1;
304 while (g_ascii_isspace(*fn)) fn += 1;
305 #ifndef WIN32
306 osp = popen(fn, "w");
307 #else
308 osp = _popen(fn, "w");
309 #endif
310 if (!osp) {
311 fprintf(stderr, "inkscape: popen(%s): %s\n",
312 fn, strerror(errno));
313 return 0;
314 }
315 _stream = _begin_stream = osp;
316 } else if (*fn == '>') {
317 fn += 1;
318 epsexport = g_str_has_suffix(fn,".eps");
319 while (isspace(*fn)) fn += 1;
320 Inkscape::IO::dump_fopen_call(fn, "K");
321 osf = Inkscape::IO::fopen_utf8name(fn, "w+");
322 if (!osf) {
323 fprintf(stderr, "inkscape: fopen(%s): %s\n",
324 fn, strerror(errno));
325 return 0;
326 }
327 _begin_stream = osf;
328 /* if font embedding is requested for EPS export...
329 * TODO:could be extended to PS export if texttopath=FALSE possible
330 */
331 if(font_embedded && epsexport)
332 {
333 /**
334 * Create temporary file where to print the main "script" part of the EPS document.
335 * Use an extra stream (_begin_stream) to print the prolog and document setup sections.
336 * Thus, once all the (main) script part printed, all the fonts used are known and can be embedded
337 * just after the prolog section, in a Begin(End)Setup section (document setup),
338 * one Begin(End)Resource (DSC comment) section for each font embedded.
339 * Then, append the final script part from the temporary file (_stream in this case).
340 * Reference: Adobe Technical note 5001, "PostScript Document Struturing Conventions Specifications"
341 * page 19
342 */
343 osf_tmp = tmpfile();
344 if(!osf_tmp)
345 {
346 g_warning("Could not create a temporary file for font embedding. Font embedding canceled.");
347 mod->set_param_bool("fontEmbedded", false);
348 font_embedded = false;
349 _stream = osf;
350 } else _stream = osf_tmp;
351 } else _stream = osf;
352 } else {
353 /* put cwd stuff in here */
354 gchar *qn = ( *fn
355 ? g_strdup_printf("lpr -P %s", fn) /* FIXME: quote fn */
356 : g_strdup("lpr") );
357 #ifndef WIN32
358 osp = popen(qn, "w");
359 #else
360 osp = _popen(qn, "w");
361 #endif
362 if (!osp) {
363 fprintf(stderr, "inkscape: popen(%s): %s\n",
364 qn, strerror(errno));
365 return 0;
366 }
367 g_free(qn);
368 _stream = _begin_stream = osp;
369 }
370 }
372 g_free(local_fn);
374 if (_stream) {
375 /* fixme: this is kinda icky */
376 #if !defined(_WIN32) && !defined(__WIN32__)
377 (void) signal(SIGPIPE, SIG_IGN);
378 #endif
379 }
381 int const res = fprintf(_begin_stream, ( epsexport
382 ? "%%!PS-Adobe-3.0 EPSF-3.0\n"
383 : "%%!PS-Adobe-3.0\n" ));
384 /* flush this to test output stream as early as possible */
385 if (fflush(_begin_stream)) {
386 /*g_print("caught error in sp_module_print_plain_begin\n");*/
387 if (ferror(_begin_stream)) {
388 g_print("Error %d on output stream: %s\n", errno,
389 g_strerror(errno));
390 }
391 g_print("Printing failed\n");
392 /* fixme: should use pclose() for pipes */
393 fclose(_begin_stream);
394 _begin_stream = NULL;
395 fflush(stdout);
396 return 0;
397 }
398 //TODO: do this same test on _stream
400 // width and height in pt
401 _width = sp_document_width(doc) * PT_PER_PX;
402 _height = sp_document_height(doc) * PT_PER_PX;
404 NRRect d;
405 bool pageBoundingBox;
406 bool pageLandscape;
407 pageBoundingBox = mod->get_param_bool("pageBoundingBox");
408 // printf("Page Bounding Box: %s\n", pageBoundingBox ? "TRUE" : "FALSE");
409 if (pageBoundingBox) {
410 d.x0 = d.y0 = 0;
411 d.x1 = ceil(_width);
412 d.y1 = ceil(_height);
413 } else {
414 SPItem* doc_item = SP_ITEM(sp_document_root(doc));
415 sp_item_invoke_bbox(doc_item, &d, sp_item_i2r_affine(doc_item), TRUE);
416 // convert from px to pt
417 d.x0 *= PT_PER_PX;
418 d.x1 *= PT_PER_PX;
419 d.y0 *= PT_PER_PX;
420 d.y1 *= PT_PER_PX;
421 }
423 Inkscape::SVGOStringStream os;
424 if (res >= 0) {
426 os << "%%Creator: " << PACKAGE_STRING << "\n";
427 // This will become problematic if inkscape gains the
428 // ability to handle multi paged documents. If this is
429 // the case the %%Orientation: comments should be
430 // renamed to %%PageOrientation: and moved to the
431 // respective pages.
432 os << "%%Pages: 1\n";
434 // 2004 Dec 10, BFC:
435 // The point of the following code is (1) to do the thing that's expected by users
436 // who have done File>New>A4_landscape or ...letter_landscape (i.e., rotate
437 // the output), while (2) not messing up users who simply want their output wider
438 // than it is tall (e.g., small figures for inclusion in LaTeX).
439 // The original patch by WQ only had the w>h condition.
440 {
441 double w = (d.x1 - d.x0); // width and height of bounding box, in pt
442 double h = (d.y1 - d.y0);
443 pageLandscape = (
444 (w > 0. && h > 0.) // empty documents fail this sanity check, have w<0, h<0
445 && (w > h) // implies, but does not prove, the user wanted landscape
446 && (w > 600) // approximate maximum printable width of an A4
447 && (!epsexport) // eps should always be portrait
448 )
449 ? true : false;
450 }
452 if (pageLandscape) {
453 os << "%%Orientation: Landscape\n";
454 os << "%%BoundingBox: " << (int) (_height - d.y1) << " "
455 << (int) d.x0 << " "
456 << (int) ceil(_height - d.y0) << " "
457 << (int) ceil(d.x1) << "\n";
458 // According to Mike Sweet (the author of CUPS)
459 // HiResBoundingBox is only appropriate
460 // for EPS files. This means that we should
461 // distinguish if we export to ps or eps here.
462 // FIXME: I couldn't find HiResBoundingBox in the PS
463 // reference manual, so I guess we should skip
464 // it.
465 os << "%%HiResBoundingBox: " << (_height - d.y1) << " "
466 << d.x0 << " "
467 << (_height - d.y0) << " "
468 << d.x1 << "\n";
469 if (!epsexport) {
470 os << "%%DocumentMedia: plain "
471 << (int) ceil(_height) << " "
472 << (int) ceil(_width) << " "
473 << "0 () ()\n";
474 }
475 } else {
476 os << "%%Orientation: Portrait\n";
477 os << "%%BoundingBox: " << (int) d.x0 << " "
478 << (int) d.y0 << " "
479 << (int) ceil(d.x1) << " "
480 << (int) ceil(d.y1) << "\n";
481 os << "%%HiResBoundingBox: " << d.x0 << " "
482 << d.y0 << " "
483 << d.x1 << " "
484 << d.y1 << "\n";
485 if (!epsexport) {
486 os << "%%DocumentMedia: plain "
487 << (int) ceil(_width) << " "
488 << (int) ceil(_height) << " "
489 << "0 () ()\n";
490 }
491 }
493 os << "%%EndComments\n";
494 /* If font embedding requested, begin document setup section where to include font resources */
495 if(font_embedded) os << "%%BeginSetup\n";/* Resume it later with Begin(End)Resource sections for font embedding. So, for now, we are done with the prolog/setup part. */
496 gint ret = fprintf(_begin_stream, "%s", os.str().c_str());
497 if(ret < 0) return ret;
499 /* Main Script part (after document setup) begins */
500 /* Empty os from all previous printing */
501 std::string clrstr = "";
502 os.str(clrstr);
503 // This will become problematic if we print multi paged documents:
504 os << "%%Page: 1 1\n";
506 if (pageLandscape) {
507 os << "90 rotate\n";
508 if (_bitmap) {
509 os << "0 " << (int) -ceil(_height) << " translate\n";
510 }
511 } else {
512 if (!_bitmap) {
513 os << "0 " << (int) ceil(_height) << " translate\n";
514 }
515 }
517 if (!_bitmap) {
518 os << PT_PER_PX << " " << -PT_PER_PX << " scale\n";
519 // from now on we can output px, but they will be treated as pt
520 }
522 /* As a new PS document is created, _fontlist has to be reinitialized (unref fonts from possible former PS docs) */
523 _fonts = g_tree_new_full((GCompareDataFunc)strcmp, NULL, (GDestroyNotify)g_free, (GDestroyNotify)g_free);
524 }
526 os << "0 0 0 setrgbcolor\n"
527 << "[] 0 setdash\n"
528 << "1 setlinewidth\n"
529 << "0 setlinejoin\n"
530 << "0 setlinecap\n";
532 /* FIXME: This function is declared to return unsigned, whereas fprintf returns a signed int *
533 * that can be zero if the first fprintf failed (os is empty) or "negative" (i.e. very positive
534 * in unsigned int interpretation) if the first fprintf failed but this one succeeds, or
535 * positive if both succeed. */
536 return fprintf(_stream, "%s", os.str().c_str());
537 }
539 unsigned int
540 PrintPS::finish(Inkscape::Extension::Print *mod)
541 {
542 if (!_stream) return 0;
544 if (_bitmap) {
545 double const dots_per_pt = _dpi / PT_PER_IN;
547 double const x0 = 0.0;
548 double const y0 = 0.0;
549 double const x1 = x0 + _width;
550 double const y1 = y0 + _height;
552 /* Bitmap width/height in bitmap dots. */
553 int const width = (int) (_width * dots_per_pt + 0.5);
554 int const height = (int) (_height * dots_per_pt + 0.5);
556 Geom::Matrix affine;
557 affine[0] = width / ((x1 - x0) * PX_PER_PT);
558 affine[1] = 0.0;
559 affine[2] = 0.0;
560 affine[3] = height / ((y1 - y0) * PX_PER_PT);
561 affine[4] = -affine[0] * x0;
562 affine[5] = -affine[3] * y0;
564 nr_arena_item_set_transform(mod->root, &affine);
566 guchar *const px = g_new(guchar, 4 * width * 64);
568 for (int y = 0; y < height; y += 64) {
569 /* Set area of interest. */
570 NRRectL bbox;
571 bbox.x0 = 0;
572 bbox.y0 = y;
573 bbox.x1 = width;
574 bbox.y1 = MIN(height, y + 64);
576 /* Update to renderable state. */
577 NRGC gc(NULL);
578 gc.transform.setIdentity();
579 nr_arena_item_invoke_update(mod->root, &bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
580 /* Render */
581 /* This should take guchar* instead of unsigned char*) */
582 NRPixBlock pb;
583 nr_pixblock_setup_extern(&pb, NR_PIXBLOCK_MODE_R8G8B8A8N,
584 bbox.x0, bbox.y0, bbox.x1, bbox.y1,
585 (guchar*)px, 4 * width, FALSE, FALSE);
586 memset(px, 0xff, 4 * width * 64);
587 nr_arena_item_invoke_render(NULL, mod->root, &bbox, &pb, 0);
588 /* Blitter goes here */
589 Geom::Matrix imgt;
590 imgt[0] = (bbox.x1 - bbox.x0) / dots_per_pt;
591 imgt[1] = 0.0;
592 imgt[2] = 0.0;
593 imgt[3] = (bbox.y1 - bbox.y0) / dots_per_pt;
594 imgt[4] = 0.0;
595 imgt[5] = _height - y / dots_per_pt - (bbox.y1 - bbox.y0) / dots_per_pt;
597 print_image(_stream, px, bbox.x1 - bbox.x0, bbox.y1 - bbox.y0, 4 * width, &imgt);
598 }
600 g_free(px);
601 }
603 fprintf(_stream, "showpage\n");
604 int const res = fprintf(_stream, "%%%%EOF\n");
606 /* Flush stream to be sure. */
607 (void) fflush(_stream);
609 char c;
610 /* If font embedding... */
611 if(mod->get_param_bool("fontEmbedded"))
612 {
613 /* Close the document setup section that had been started (because all the needed resources are supposed to be included now) */
614 /*res = */fprintf(_begin_stream, "%s", "%%EndSetup\n");
615 /* If font embedding requested, the following PS script part was printed to a different file from the prolog/setup, so script part (current _stream) needs to be copied to prolog/setup file to get the complete (E)PS document */
616 if(fseek(_stream, 0, SEEK_SET) == 0)
617 {
618 while((c = fgetc(_stream))!=EOF) fputc(c, _begin_stream);
619 }
620 fclose(_stream);
621 _stream = _begin_stream;
622 }
624 /* fixme: should really use pclose for popen'd streams */
625 fclose(_stream);
626 _stream = NULL;
628 _latin1_encoded_fonts.clear();
630 g_tree_destroy(_fonts);
632 return res;
633 }
635 unsigned int
636 PrintPS::bind(Inkscape::Extension::Print */*mod*/, Geom::Matrix const *transform, float /*opacity*/)
637 {
638 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
639 if (_bitmap) return 0;
641 Inkscape::SVGOStringStream os;
642 os << "gsave [" << (*transform)[0] << " "
643 << (*transform)[1] << " "
644 << (*transform)[2] << " "
645 << (*transform)[3] << " "
646 << (*transform)[4] << " "
647 << (*transform)[5] << "] concat\n";
649 return fprintf(_stream, "%s", os.str().c_str());
650 }
652 unsigned int
653 PrintPS::release(Inkscape::Extension::Print */*mod*/)
654 {
655 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
656 if (_bitmap) return 0;
658 return fprintf(_stream, "grestore\n");
659 }
661 unsigned int
662 PrintPS::comment(Inkscape::Extension::Print */*mod*/, char const *comment)
663 {
664 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
665 if (_bitmap) return 0;
667 return fprintf(_stream, "%%! %s\n",comment);
668 }
670 void
671 PrintPS::print_fill_style(SVGOStringStream &os, SPStyle const *const style, NRRect const *pbox)
672 {
673 g_return_if_fail( style->fill.isColor()
674 || ( style->fill.isPaintserver()
675 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) );
677 if (style->fill.isColor()) {
678 float rgb[3];
679 sp_color_get_rgb_floatv(&style->fill.value.color, rgb);
681 os << rgb[0] << " " << rgb[1] << " " << rgb[2] << " setrgbcolor\n";
683 } else {
684 g_assert( style->fill.isPaintserver()
685 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
687 if (SP_IS_LINEARGRADIENT(SP_STYLE_FILL_SERVER(style))) {
689 SPLinearGradient *lg = SP_LINEARGRADIENT(SP_STYLE_FILL_SERVER(style));
690 Geom::Point p1 (lg->x1.computed, lg->y1.computed);
691 Geom::Point p2 (lg->x2.computed, lg->y2.computed);
692 if (pbox && SP_GRADIENT(lg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
693 // convert to userspace
694 Geom::Matrix bbox2user(pbox->x1 - pbox->x0, 0, 0, pbox->y1 - pbox->y0, pbox->x0, pbox->y0);
695 p1 *= bbox2user;
696 p2 *= bbox2user;
697 }
699 os << "<<\n/ShadingType 2\n/ColorSpace /DeviceRGB\n";
700 os << "/Coords [" << p1[Geom::X] << " " << p1[Geom::Y] << " " << p2[Geom::X] << " " << p2[Geom::Y] <<"]\n";
701 os << "/Extend [true true]\n";
702 os << "/Domain [0 1]\n";
703 os << "/Function <<\n/FunctionType 3\n/Functions\n[\n";
705 sp_gradient_ensure_vector(SP_GRADIENT(lg)); // when exporting from commandline, vector is not built
706 for (unsigned i = 0; i + 1 < lg->vector.stops.size(); i++) {
707 float rgb[3];
708 sp_color_get_rgb_floatv(&lg->vector.stops[i].color, rgb);
709 os << "<<\n/FunctionType 2\n/Domain [0 1]\n";
710 os << "/C0 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
711 sp_color_get_rgb_floatv(&lg->vector.stops[i+1].color, rgb);
712 os << "/C1 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
713 os << "/N 1\n>>\n";
714 }
715 os << "]\n/Domain [0 1]\n";
716 os << "/Bounds [ ";
717 for (unsigned i = 0; i + 2 < lg->vector.stops.size(); i++) {
718 os << lg->vector.stops[i+1].offset <<" ";
719 }
720 os << "]\n";
721 os << "/Encode [ ";
722 for (unsigned i = 0; i + 1 < lg->vector.stops.size(); i++) {
723 os << "0 1 ";
724 }
725 os << "]\n";
726 os << ">>\n>>\n";
728 } else if (SP_IS_RADIALGRADIENT(SP_STYLE_FILL_SERVER(style))) {
730 SPRadialGradient *rg = SP_RADIALGRADIENT(SP_STYLE_FILL_SERVER(style));
731 Geom::Point c(rg->cx.computed, rg->cy.computed);
732 Geom::Point f(rg->fx.computed, rg->fy.computed);
733 double r = rg->r.computed;
734 if (pbox && SP_GRADIENT(rg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
735 // convert to userspace
736 Geom::Matrix const bbox2user(pbox->x1 - pbox->x0, 0,
737 0, pbox->y1 - pbox->y0,
738 pbox->x0, pbox->y0);
739 c *= bbox2user;
740 f *= bbox2user;
741 r *= bbox2user.descrim();
742 }
744 os << "<<\n/ShadingType 3\n/ColorSpace /DeviceRGB\n";
745 os << "/Coords ["<< f[Geom::X] <<" "<< f[Geom::Y] <<" 0 "<< c[Geom::X] <<" "<< c[Geom::Y] <<" "<< r <<"]\n";
746 os << "/Extend [true true]\n";
747 os << "/Domain [0 1]\n";
748 os << "/Function <<\n/FunctionType 3\n/Functions\n[\n";
750 sp_gradient_ensure_vector(SP_GRADIENT(rg)); // when exporting from commandline, vector is not built
751 for (unsigned i = 0; i + 1 < rg->vector.stops.size(); i++) {
752 float rgb[3];
753 sp_color_get_rgb_floatv(&rg->vector.stops[i].color, rgb);
754 os << "<<\n/FunctionType 2\n/Domain [0 1]\n";
755 os << "/C0 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
756 sp_color_get_rgb_floatv(&rg->vector.stops[i+1].color, rgb);
757 os << "/C1 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
758 os << "/N 1\n>>\n";
759 }
760 os << "]\n/Domain [0 1]\n";
761 os << "/Bounds [ ";
762 for (unsigned i = 0; i + 2 < rg->vector.stops.size(); i++) {
763 os << rg->vector.stops[i+1].offset << " ";
764 }
765 os << "]\n";
766 os << "/Encode [ ";
767 for (unsigned i = 0; i + 1 < rg->vector.stops.size(); i++) {
768 os << "0 1 ";
769 }
770 os << "]\n";
771 os << ">>\n>>\n";
772 }
773 }
774 }
776 void
777 PrintPS::print_stroke_style(SVGOStringStream &os, SPStyle const *style)
778 {
779 float rgb[3];
780 sp_color_get_rgb_floatv(&style->stroke.value.color, rgb);
782 os << rgb[0] << " " << rgb[1] << " " << rgb[2] << " setrgbcolor\n";
784 // There are rare cases in which for a solid line stroke_dasharray_set is true. To avoid
785 // invalid PS-lines such as "[0.0000000 0.0000000] 0.0000000 setdash", which should be "[] 0 setdash",
786 // we first check if all components of stroke_dash.dash are 0.
787 bool LineSolid = true;
788 if (style->stroke_dash.n_dash &&
789 style->stroke_dash.dash )
790 {
791 int i = 0;
792 while (LineSolid && (i < style->stroke_dash.n_dash)) {
793 if (style->stroke_dash.dash[i] > 0.00000001)
794 LineSolid = false;
795 i++;
796 }
797 if (!LineSolid) {
798 os << "[";
799 for (i = 0; i < style->stroke_dash.n_dash; i++) {
800 if (i > 0) {
801 os << " ";
802 }
803 os << style->stroke_dash.dash[i];
804 }
805 os << "] " << style->stroke_dash.offset << " setdash\n";
806 } else {
807 os << "[] 0 setdash\n";
808 }
809 } else {
810 os << "[] 0 setdash\n";
811 }
813 os << style->stroke_width.computed << " setlinewidth\n";
814 os << style->stroke_linejoin.computed << " setlinejoin\n";
815 os << style->stroke_linecap.computed << " setlinecap\n";
816 }
819 unsigned int
820 PrintPS::fill(Inkscape::Extension::Print *mod, Geom::PathVector const &pathv, Geom::Matrix const *ctm, SPStyle const *const style,
821 NRRect const *pbox, NRRect const *dbox, NRRect const *bbox)
822 {
823 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
824 if (_bitmap) return 0;
826 if ( style->fill.isColor()
827 || ( style->fill.isPaintserver()
828 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) )
829 {
830 Inkscape::SVGOStringStream os;
832 os << "gsave\n";
834 print_fill_style(os, style, pbox);
836 print_pathvector(os, pathv);
838 if (style->fill_rule.computed == SP_WIND_RULE_EVENODD) {
839 if (style->fill.isColor()) {
840 os << "eofill\n";
841 } else {
842 g_assert( style->fill.isPaintserver()
843 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
844 SPGradient const *g = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
845 os << "eoclip\n";
846 if (g->gradientTransform_set) {
847 os << "gsave [" << g->gradientTransform[0] << " " << g->gradientTransform[1]
848 << " " << g->gradientTransform[2] << " " << g->gradientTransform[3]
849 << " " << g->gradientTransform[4] << " " << g->gradientTransform[5] << "] concat\n";
850 }
851 os << "shfill\n";
852 if (g->gradientTransform_set) {
853 os << "grestore\n";
854 }
855 }
856 } else {
857 if (style->fill.isColor()) {
858 os << "fill\n";
859 } else {
860 g_assert( style->fill.isPaintserver()
861 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
862 SPGradient const *g = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
863 os << "clip\n";
864 if (g->gradientTransform_set) {
865 os << "gsave [" << g->gradientTransform[0] << " " << g->gradientTransform[1]
866 << " " << g->gradientTransform[2] << " " << g->gradientTransform[3]
867 << " " << g->gradientTransform[4] << " " << g->gradientTransform[5] << "] concat\n";
868 }
869 os << "shfill\n";
870 if (g->gradientTransform_set) {
871 os << "grestore\n";
872 }
873 }
874 }
876 os << "grestore\n";
878 fprintf(_stream, "%s", os.str().c_str());
879 }
881 return 0;
882 }
885 unsigned int
886 PrintPS::stroke(Inkscape::Extension::Print *mod, Geom::PathVector const &pathv, Geom::Matrix const *ctm, SPStyle const *style,
887 NRRect const *pbox, NRRect const *dbox, NRRect const *bbox)
888 {
889 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
890 if (_bitmap) return 0;
892 if (style->stroke.isColor()) {
893 Inkscape::SVGOStringStream os;
895 print_stroke_style(os, style);
897 print_pathvector(os, pathv);
899 os << "stroke\n";
901 fprintf(_stream, "%s", os.str().c_str());
902 }
904 return 0;
905 }
907 unsigned int
908 PrintPS::image(Inkscape::Extension::Print *mod, guchar *px, unsigned int w, unsigned int h, unsigned int rs,
909 Geom::Matrix const *transform, SPStyle const *style)
910 {
911 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
912 if (_bitmap) return 0;
914 return print_image(_stream, px, w, h, rs, transform);
915 }
917 /* PSFontName is now useless (cf. text() method code) */
918 char const *
919 PrintPS::PSFontName(SPStyle const *style)
920 {
921 font_instance *tf = font_factory::Default()->FaceFromStyle(style);
923 char const *n;
924 char name_buf[256];
926 // PS does not like spaces in fontnames, replace them with the usual dashes.
928 if (tf) {
929 tf->PSName(name_buf, sizeof(name_buf));
930 n = g_strdelimit(name_buf, " ", '-');
931 tf->Unref();
932 } else {
933 // this system does not have this font, so just use the name from SVG in the hope that PS interpreter will make sense of it
934 bool i = (style->font_style.value == SP_CSS_FONT_STYLE_ITALIC);
935 bool o = (style->font_style.value == SP_CSS_FONT_STYLE_OBLIQUE);
936 bool b = (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) ||
937 (style->font_weight.value >= SP_CSS_FONT_WEIGHT_500 && style->font_weight.value <= SP_CSS_FONT_WEIGHT_900);
939 n = g_strdup_printf("%s%s%s%s",
940 g_strdelimit(style->text->font_family.value, " ", '-'),
941 (b || i || o) ? "-" : "",
942 (b) ? "Bold" : "",
943 (i) ? "Italic" : ((o) ? "Oblique" : "") );
944 }
946 return g_strdup(n);
947 }
949 //LSB = Least Significant Byte
950 //converts 4-byte array to "LSB first" to "LSB last"
951 /**
952 * (Used by PrintPS::embed_t1 (from libgnomeprint/gnome-font-face.c),
953 * to get the length of data segment (bytes 3-6 in IBM PC (PostScript) font file format.
954 * Reference: Adobe technical note 5040, "Supporting Downloadable PostScript
955 * Language Fonts", page 9)
956 */
958 #define INT32_LSB_2_5(q) ((q)[2] + ((q)[3] << 8) + ((q)[4] << 16) + ((q)[5] << 24))
960 /**
961 * \brief For "Type 1" font only, print font data in output stream, to embed font data in PS output.
962 * \param os Stream of output.
963 * \param font Font whose data to embed.
964 * \return FALSE if font embedding canceled (due to error or not supported font type), TRUE otherwise
965 * TODO: enable font embedding for True Type
966 */
967 //adapted more/less from libgnomeprint/gnome_font_face_ps_embed_t1()
968 bool
969 PrintPS::embed_t1 (SVGOStringStream &os, font_instance* font)
970 {
971 //check font type
972 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
973 const FT_String* font_type = FT_Get_X11_Font_Format(font_face);
974 g_return_val_if_fail (_fontTypesMap[font_type] == FONT_TYPE1, false);
975 //get font filename, stream to font file and size
976 FT_Stream font_stream = font_face->stream;
977 const char* font_filename = (char*) font_stream->pathname.pointer;
978 unsigned long font_stream_size = font_stream->size;
979 //first detect if font file is in IBM PC format
980 /**
981 * if first byte is 0x80, font file is pfb, do the same as a pfb to pfa converter
982 * Reference: Adobe technical note 5040, "Supporting Downloadable PostScript
983 * Language Fonts", page 9
984 * else: include all the ASCII data in the font pfa file
985 **/
986 char* buf = new char[7];
987 unsigned char* buffer = new unsigned char[7];//for the 6 header bytes (data segment length is unknown at this point) and final '\0'
988 std::string ascii_data;//for data segment "type 1" in IBM PC Format
989 //read the 6 header bytes
990 //for debug: g_warning("Reading from font file %s...", font_filename);
991 font_stream->close(font_stream);
992 ifstream font_file (font_filename, ios::in|ios::binary);
993 if (!font_file.is_open()) {
994 g_warning ("file %s: line %d: Cannot open font file %s", __FILE__, __LINE__, font_filename);
995 return false;
996 }
997 font_file.read(buf, 6);
998 buffer = (unsigned char*) buf;
1000 //If font file is pfb, do the same as pfb to pfa converter
1001 //check byte 1
1002 if (buffer[0] == 0x80) {
1003 const char hextab[17] = "0123456789abcdef";
1004 unsigned long offset = 0;
1006 while (offset < font_stream_size) {
1007 gint length, i;
1008 if (buffer[0] != 0x80) {
1009 g_warning ("file %s: line %d: Corrupt %s", __FILE__, __LINE__, font_filename);
1010 //TODO: print some default font data anyway like libgnomeprint/gnome_font_face_ps_embed_empty
1011 return false;
1012 }
1013 switch (buffer[1]) {
1014 case 1:
1015 //get data segment length from bytes 3-6
1016 //(Note: byte 1 is first byte in comments to match Adobe technical note 5040, but index 0 in code)
1017 length = INT32_LSB_2_5 (buffer);
1018 offset += 6;
1019 //resize the buffer to fit the data segment length
1020 delete [] buf;
1021 buf = new char[length + 1];
1022 buffer = new unsigned char[length + 1];
1023 //read and print all the data segment length
1024 font_file.read(buf, length);
1025 buffer = (unsigned char*) buf;
1026 /**
1027 * Assigning a part from the buffer of length "length" ensures
1028 * that no incorrect extra character will be printed and make the PS output invalid
1029 * That was the case with the code:
1030 * os << buffer;
1031 * (A substring method could have been used as well.)
1032 */
1033 ascii_data.assign(buf, 0, length);
1034 os << ascii_data;
1035 offset += length;
1036 //read next 6 header bytes
1037 font_file.read(buf, 6);
1038 break;
1039 case 2:
1040 length = INT32_LSB_2_5 (buffer);
1041 offset += 6;
1042 //resize the buffer to fit the data segment length
1043 delete [] buf;
1044 buf = new char[length + 1];
1045 buffer = new unsigned char[length + 1];
1046 //read and print all the data segment length
1047 font_file.read(buf, length);
1048 buffer = (unsigned char*) buf;
1049 for (i = 0; i < length; i++) {
1050 os << hextab[buffer[i] >> 4];
1051 os << hextab[buffer[i] & 15];
1052 offset += 1;
1053 if ((i & 31) == 31 || i == length - 1)
1054 os << "\n";
1055 }
1056 //read next 6 header bytes
1057 font_file.read(buf, 6);
1058 break;
1059 case 3:
1060 /* Finished */
1061 os << "\n";
1062 offset = font_stream_size;
1063 break;
1064 default:
1065 os << "%%%ERROR: Font file corrupted at byte " << offset << "\n";
1066 //TODO: print some default font data anyway like libgnomeprint/gnome_font_face_ps_embed_empty
1067 return false;
1068 }
1069 }
1070 }
1071 //else: font file is pfa, include all directly
1072 else {
1073 //font is not in IBM PC format, all the file content can be directly printed
1074 //resize buffer
1075 delete [] buf;
1076 buf = new char[font_stream_size + 1];
1077 delete [] buffer;
1078 font_file.seekg (0, ios::beg);
1079 font_file.read(buf, font_stream_size);
1080 /**
1081 * Assigning a part from the buffer of length "length" ensures
1082 * that no incorrect extra character will be printed and make the PS output invalid
1083 * That was the case with the code:
1084 * os << buffer;
1085 * (A substring method could have been used as well.)
1086 */
1087 ascii_data.assign(buf, 0, font_stream_size);
1088 os << ascii_data;
1089 }
1090 font_file.close();
1091 delete [] buf;
1092 buf = NULL;
1093 buffer = NULL;// Clear buffer to prevent using invalid memory reference.
1095 char font_psname[256];
1096 font->PSName(font_psname, sizeof(font_psname));
1097 FT_Long font_num_glyphs = font_face->num_glyphs;
1098 if (font_num_glyphs < 256) {
1099 gint glyph;
1100 /* 8-bit vector */
1101 os << "(" << font_psname << ") cvn findfont dup length dict begin\n";
1102 os << "{1 index /FID ne {def} {pop pop} ifelse} forall\n";
1103 os << "/Encoding [\n";
1104 for (glyph = 0; glyph < 256; glyph++) {
1105 guint g;
1106 gchar c[256];
1107 FT_Error status;
1108 g = (glyph < font_num_glyphs) ? glyph : 0;
1109 status = FT_Get_Glyph_Name (font_face, g, c, 256);
1111 if (status != FT_Err_Ok) {
1112 g_warning ("file %s: line %d: Glyph %d has no name in %s", __FILE__, __LINE__, g, font_filename);
1113 g_snprintf (c, 256, ".notdef");
1114 }
1116 os << "/" << c << ( ((glyph & 0xf) == 0xf)?"\n":" " );
1117 }
1118 os << "] def currentdict end\n";
1119 //TODO: manage several font instances for same ps name like in libgnomeprint/gnome_print_ps2_set_font_real()
1120 //gf_pso_sprintf (pso, "(%s) cvn exch definefont pop\n", pso->encodedname);
1121 os << "(" << font_psname << ") cvn exch definefont pop\n";
1122 } else {
1123 gint nfonts, i, j;
1124 /* 16-bit vector */
1125 nfonts = (font_num_glyphs + 255) >> 8;
1127 os << "32 dict begin\n";
1128 /* Common entries */
1129 os << "/FontType 0 def\n";
1130 os << "/FontMatrix [1 0 0 1 0 0] def\n";
1131 os << "/FontName (" << font_psname << "-Glyph-Composite) cvn def\n";
1132 os << "/LanguageLevel 2 def\n";
1134 /* Type 0 entries */
1135 os << "/FMapType 2 def\n";
1137 /* Bitch 'o' bitches */
1138 os << "/FDepVector [\n";
1140 for (i = 0; i < nfonts; i++) {
1141 os << "(" << font_psname << ") cvn findfont dup length dict begin\n";
1142 os << "{1 index /FID ne {def} {pop pop} ifelse} forall\n";
1143 os << "/Encoding [\n";
1144 for (j = 0; j < 256; j++) {
1145 gint glyph;
1146 gchar c[256];
1147 FT_Error status;
1148 glyph = 256 * i + j;
1149 if (glyph >= font_num_glyphs)
1150 glyph = 0;
1151 status = FT_Get_Glyph_Name (font_face, glyph, c, 256);
1152 if (status != FT_Err_Ok) {
1153 g_warning ("file %s: line %d: Glyph %d has no name in %s", __FILE__, __LINE__, glyph, font_filename);
1154 g_snprintf (c, 256, ".notdef");
1155 }
1156 os << "/" << c << ( ((j & 0xf) == 0xf)?"\n":" " );
1157 }
1158 os << "] def\n";
1159 os << "currentdict end (" << font_psname << "-Glyph-Page-";
1160 os << std::dec << i;
1161 os << ") cvn exch definefont\n";
1162 }
1163 os << "] def\n";
1164 os << "/Encoding [\n";
1165 for (i = 0; i < 256; i++) {
1166 gint fn;
1167 fn = (i < nfonts) ? i : 0;
1168 os << std::dec << fn;
1169 os << ( ((i & 0xf) == 0xf) ? "\n" : " " );
1170 }
1171 os << "] def\n";
1172 os << "currentdict end\n";
1173 //TODO: manage several font instances for same ps name like in libgnomeprint/gnome_print_ps2_set_font_real()
1174 //gf_pso_sprintf (pso, "(%s) cvn exch definefont pop\n", pso->encodedname);
1175 os << "(" << font_psname << ") cvn exch definefont pop\n";
1176 }
1177 //font embedding completed
1178 return true;
1179 }
1183 /**
1184 * \brief Print font data in output stream, to embed font data in PS output.
1185 * \param os Stream of output.
1186 * \param font Font whose data to embed.
1187 * \return FALSE if font embedding canceled (due to error or not supported font type), TRUE otherwise
1188 */
1189 //adapted from libgnomeprint/gnome_font_face_ps_embed()
1190 bool PrintPS::embed_font(SVGOStringStream &os, font_instance* font)
1191 {
1192 //Hinted at by a comment in libgnomeprint/fcpattern_to_gp_font_entry()
1193 //Determining the font type in the "Pango way"
1194 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
1195 const FT_String* font_type = FT_Get_X11_Font_Format(font_face);
1197 /**
1198 * Possible values of "font_type": Type 1, TrueType, etc.
1199 * Embedding available only for Type 1 fonts so far.
1200 */
1201 //TODO: provide support for other font types (TrueType is a priority)
1202 switch(_fontTypesMap[font_type])
1203 {
1204 case FONT_TYPE1:
1205 return embed_t1 (os, font);
1206 //TODO: implement TT font embedding
1207 /*case FONT_TRUETYPE:
1208 embed_tt (os, font);
1209 break;*/
1210 default:
1211 g_warning("Unknown (not supported) font type for embedding: %s", font_type);
1212 //TODO: embed something like in libgnomeprint/gnome_font_face_ps_embed_empty();
1213 return false;
1214 }
1215 }
1218 /**
1219 * \brief Converts UTF-8 string to sequence of glyph numbers for PostScript string (cf. "show" commands.).
1220 * \param os Stream of output.
1221 * \param font Font used for unicode->glyph mapping.
1222 * \param unistring UTF-8 encoded string to convert.
1223 */
1224 void PrintPS::print_glyphlist(SVGOStringStream &os, font_instance* font, Glib::ustring unistring)
1225 {
1226 //iterate through unicode chars in unistring
1227 Glib::ustring::iterator unistring_iter;
1228 gunichar unichar;
1229 gint glyph_index, glyph_page;
1231 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
1232 FT_Long font_num_glyphs = font_face->num_glyphs;
1233 //whether font has more than one glyph pages (16-bit encoding)
1234 bool two_bytes_encoded = (font_num_glyphs > 255);
1236 for (unistring_iter = unistring.begin(); unistring_iter!=unistring.end(); unistring_iter++)
1237 {
1238 //get unicode char
1239 unichar = *unistring_iter;
1240 //get matching glyph index in current font for unicode char
1241 //default glyph index is 0 for undefined font character (glyph unavailable)
1242 //TODO: if glyph unavailable for current font, use a default font among the most Unicode-compliant - e.g. Bitstream Cyberbit - I guess
1243 glyph_index = font->MapUnicodeChar(unichar);
1244 //if more than one glyph pages for current font (16-bit encoding),
1245 if(two_bytes_encoded)
1246 {
1247 //add glyph page before glyph index.
1248 glyph_page = (glyph_index >> 8) & 0xff;
1249 os << "\\";
1250 //convert in octal code before printing
1251 os << std::oct << glyph_page;
1252 }
1253 //(If one page - 8-bit encoding -, nothing to add.)
1254 //TODO: explain the following line inspired from libgnomeprint/gnome_print_ps2_glyphlist()
1255 glyph_index = glyph_index & 0xff;
1256 //TODO: mark glyph as used for current font, if Inkscape has to embed minimal font data in PS
1257 os << "\\";
1258 //convert in octal code before printing
1259 os << std::oct << glyph_index;
1260 }
1261 }
1263 unsigned int
1264 PrintPS::text(Inkscape::Extension::Print *mod, char const *text, Geom::Point p,
1265 SPStyle const *const style)
1266 {
1267 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
1268 if (_bitmap) return 0;
1270 //check whether fonts have to be embedded in the PS output
1271 //if not, use the former way of Inkscape to print text
1272 gboolean font_embedded = mod->fontEmbedded();
1274 Inkscape::SVGOStringStream os;
1275 //find font
1276 /**
1277 * A font_instance object is necessary for the next steps,
1278 * that's why using PSFontName() method just to get the PS fontname
1279 * is not enough and not appropriate
1280 */
1281 font_instance *tf = font_factory::Default()->FaceFromStyle(style);
1283 const gchar *fn = NULL;
1284 char name_buf[256];
1286 //check whether font was found
1287 /**
1288 * This check is not strictly reliable
1289 * since Inkscape returns a default font if font not found.
1290 * This is just to be consistent with the method PSFontName().
1291 */
1292 if (tf) {
1293 //get font PS name
1294 tf->PSName(name_buf, sizeof(name_buf));
1295 fn = name_buf;
1296 } else {
1297 // this system does not have this font, so cancel font embedding...
1298 font_embedded = FALSE;
1299 //this case seems to never happen since Inkscape uses a default font instead (like BitstreamVeraSans on Windows)
1300 g_warning("Font %s not found.", fn);
1301 //...and just use the name from SVG in the hope that PS interpreter will make sense of it
1302 bool i = (style->font_style.value == SP_CSS_FONT_STYLE_ITALIC);
1303 bool o = (style->font_style.value == SP_CSS_FONT_STYLE_OBLIQUE);
1304 bool b = (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) ||
1305 (style->font_weight.value >= SP_CSS_FONT_WEIGHT_500 && style->font_weight.value <= SP_CSS_FONT_WEIGHT_900);
1307 fn = g_strdup_printf("%s%s%s%s",
1308 g_strdelimit(style->text->font_family.value, " ", '-'),
1309 (b || i || o) ? "-" : "",
1310 (b) ? "Bold" : "",
1311 (i) ? "Italic" : ((o) ? "Oblique" : "") );
1312 }
1314 /**
1315 * If font embedding is requested, tempt to embed the font the first time it is used, once and for all.
1316 * There is no selection of the glyph descriptions to embed, based on the characters used effectively in the document.
1317 * (TODO?)
1318 * Else, back to the former way of printing.
1319 */
1320 gpointer is_embedded;
1321 //if not first time the font is used and if font embedding requested, check whether the font has been embedded (successfully the first time).
1322 if(g_tree_lookup_extended(_fonts, fn, NULL, &is_embedded)) font_embedded = font_embedded && (strcmp((char *)is_embedded, "TRUE") == 0);
1323 else
1324 {
1325 //first time the font is used
1326 if(font_embedded)
1327 {
1328 //embed font in PS output
1329 //adapted from libgnomeprint/gnome_print_ps2_close()
1330 os << "%%BeginResource: font " << fn << "\n";
1331 font_embedded = embed_font(os, tf);
1332 os << "%%EndResource: font " << fn << "\n";
1333 if(!font_embedded) g_warning("Font embedding canceled for font: %s", fn);
1334 else fprintf(_begin_stream, "%s", os.str().c_str());
1335 //empty os before resume printing to the script stream
1336 std::string clrstr = "";
1337 os.str(clrstr);
1339 }
1340 //add to the list
1341 g_tree_insert(_fonts, g_strdup(fn), g_strdup((font_embedded)?"TRUE":"FALSE"));
1342 }
1344 Glib::ustring s;
1345 // Escape chars
1346 Inkscape::SVGOStringStream escaped_text;
1347 //if font embedding, all characters will be converted to glyph indices (cf. PrintPS::print_glyphlist()),
1348 //so no need to escape characters
1349 //else back to the old way, i.e. escape chars: '\',')','(' and UTF-8 ones
1350 if(font_embedded) s = text;
1351 else {
1352 escaped_text << std::oct;
1353 for (gchar const *p_text = text ; *p_text ; p_text = g_utf8_next_char(p_text)) {
1354 gunichar const c = g_utf8_get_char(p_text);
1355 if (c == '\\' || c == ')' || c == '(')
1356 escaped_text << '\\' << static_cast<char>(c);
1357 else if (c >= 0x80)
1358 escaped_text << '\\' << c;
1359 else
1360 escaped_text << static_cast<char>(c);
1361 }
1362 }
1364 os << "gsave\n";
1366 // set font
1367 if(font_embedded) os << "/" << fn << " findfont\n";
1368 else {
1369 if (_latin1_encoded_fonts.find(fn) == _latin1_encoded_fonts.end()) {
1370 if (!_newlatin1font_proc_defined) {
1371 // input: newfontname, existingfontname
1372 // output: new font object, also defined to newfontname
1373 os << "/newlatin1font " // name of the proc
1374 "{findfont dup length dict copy " // load the font and create a copy of it
1375 "dup /Encoding ISOLatin1Encoding put " // change the encoding in the copy
1376 "definefont} def\n"; // create the new font and leave it on the stack, define the proc
1377 _newlatin1font_proc_defined = true;
1378 }
1379 if(strchr(fn, ' ') == NULL)
1380 os << "/" << fn << "-ISOLatin1 /" << fn << " newlatin1font\n";
1381 else
1382 os << "(/" << fn << "-ISOLatin1) (/" << fn << ") newlatin1font\n";
1383 _latin1_encoded_fonts.insert(fn);
1384 } else
1385 if(strchr(fn, ' ') == NULL)
1386 os << "/" << fn << "-ISOLatin1 findfont\n";
1387 else
1388 os << "(/" << fn << "-ISOLatin1) findfont\n";
1389 }
1390 os << style->font_size.computed << " scalefont\n";
1391 os << "setfont\n";
1392 //The commented line beneath causes Inkscape to crash under Linux but not under Windows
1393 //g_free((void*) fn);
1395 if ( style->fill.isColor()
1396 || ( style->fill.isPaintserver()
1397 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) )
1398 {
1399 // set fill style
1400 print_fill_style(os, style, NULL);
1401 // FIXME: we don't know the pbox of text, so have to pass NULL. This means gradients with
1402 // bbox units won't work with text. However userspace gradients don't work with text either
1403 // (text is black) for some reason.
1405 os << "newpath\n";
1406 os << p[Geom::X] << " " << p[Geom::Y] << " moveto\n";
1407 os << "(";
1408 if(font_embedded) print_glyphlist(os, tf, s);
1409 else os << escaped_text.str();
1410 os << ") show\n";
1411 }
1413 if (style->stroke.isColor()) {
1415 // set stroke style
1416 print_stroke_style(os, style);
1418 // paint stroke
1419 os << "newpath\n";
1420 os << p[Geom::X] << " " << p[Geom::Y] << " moveto\n";
1421 os << "(";
1422 if(font_embedded) print_glyphlist(os, tf, s);
1423 else os << escaped_text.str();
1424 os << ") false charpath stroke\n";
1425 }
1427 if(tf) tf->Unref();
1429 os << "grestore\n";
1431 fprintf(_stream, "%s", os.str().c_str());
1433 return 0;
1434 }
1438 /* PostScript helpers */
1440 void
1441 PrintPS::print_pathvector(SVGOStringStream &os, Geom::PathVector const &pathv)
1442 {
1443 if (pathv.empty())
1444 return;
1446 os << "newpath\n";
1448 for(Geom::PathVector::const_iterator it = pathv.begin(); it != pathv.end(); ++it) {
1450 os << it->initialPoint()[Geom::X] << " " << it->initialPoint()[Geom::Y] << " moveto\n";
1452 for(Geom::Path::const_iterator cit = it->begin(); cit != it->end_open(); ++cit) {
1453 print_2geomcurve(os, *cit);
1454 }
1456 if (it->closed()) {
1457 os << "closepath\n";
1458 }
1460 }
1461 }
1463 void
1464 PrintPS::print_2geomcurve(SVGOStringStream &os, Geom::Curve const & c )
1465 {
1466 using Geom::X;
1467 using Geom::Y;
1469 if( is_straight_curve(c) )
1470 {
1471 os << c.finalPoint()[X] << " " << c.finalPoint()[Y] << " lineto\n";
1472 }
1473 else if(Geom::CubicBezier const *cubic_bezier = dynamic_cast<Geom::CubicBezier const*>(&c)) {
1474 std::vector<Geom::Point> points = cubic_bezier->points();
1475 os << points[1][X] << " " << points[1][Y] << " "
1476 << points[2][X] << " " << points[2][Y] << " "
1477 << points[3][X] << " " << points[3][Y] << " curveto\n";
1478 }
1479 else {
1480 //this case handles sbasis as well as all other curve types
1481 Geom::Path sbasis_path = Geom::cubicbezierpath_from_sbasis(c.toSBasis(), 0.1);
1483 for(Geom::Path::iterator iter = sbasis_path.begin(); iter != sbasis_path.end(); ++iter) {
1484 print_2geomcurve(os, *iter);
1485 }
1486 }
1487 }
1490 /* The following code is licensed under GNU GPL.
1491 ** The packbits, ascii85 and imaging printing code
1492 ** is from the gimp's postscript.c.
1493 */
1495 /**
1496 * \param nin Number of bytes of source data.
1497 * \param src Source data.
1498 * \param nout Number of output bytes.
1499 * \param dst Buffer for output.
1500 */
1501 void
1502 PrintPS::compress_packbits(int nin,
1503 guchar *src,
1504 int *nout,
1505 guchar *dst)
1507 {
1508 register guchar c;
1509 int nrepeat, nliteral;
1510 guchar *run_start;
1511 guchar *start_dst = dst;
1512 guchar *last_literal = NULL;
1514 for (;;) {
1515 if (nin <= 0) break;
1517 run_start = src;
1518 c = *run_start;
1520 /* Search repeat bytes */
1521 if ((nin > 1) && (c == src[1])) {
1522 nrepeat = 1;
1523 nin -= 2;
1524 src += 2;
1525 while ((nin > 0) && (c == *src)) {
1526 nrepeat++;
1527 src++;
1528 nin--;
1529 if (nrepeat == 127) break; /* Maximum repeat */
1530 }
1532 /* Add two-byte repeat to last literal run ? */
1533 if ( (nrepeat == 1)
1534 && (last_literal != NULL) && (((*last_literal)+1)+2 <= 128) )
1535 {
1536 *last_literal += 2;
1537 *(dst++) = c;
1538 *(dst++) = c;
1539 continue;
1540 }
1542 /* Add repeat run */
1543 *(dst++) = (guchar)((-nrepeat) & 0xff);
1544 *(dst++) = c;
1545 last_literal = NULL;
1546 continue;
1547 }
1548 /* Search literal bytes */
1549 nliteral = 1;
1550 nin--;
1551 src++;
1553 for (;;) {
1554 if (nin <= 0) break;
1556 if ((nin >= 2) && (src[0] == src[1])) /* A two byte repeat ? */
1557 break;
1559 nliteral++;
1560 nin--;
1561 src++;
1562 if (nliteral == 128) break; /* Maximum literal run */
1563 }
1565 /* Could be added to last literal run ? */
1566 if ((last_literal != NULL) && (((*last_literal)+1)+nliteral <= 128)) {
1567 *last_literal += nliteral;
1568 } else {
1569 last_literal = dst;
1570 *(dst++) = (guchar)(nliteral-1);
1571 }
1572 while (nliteral-- > 0) *(dst++) = *(run_start++);
1573 }
1574 *nout = dst - start_dst;
1575 }
1577 void
1578 PrintPS::ascii85_init(void)
1579 {
1580 ascii85_len = 0;
1581 ascii85_linewidth = 0;
1582 }
1584 void
1585 PrintPS::ascii85_flush(SVGOStringStream &os)
1586 {
1587 char c[5];
1588 bool const zero_case = (ascii85_buf == 0);
1589 static int const max_linewidth = 75;
1591 for (int i = 4; i >= 0; i--) {
1592 c[i] = (ascii85_buf % 85) + '!';
1593 ascii85_buf /= 85;
1594 }
1595 /* check for special case: "!!!!!" becomes "z", but only if not
1596 * at end of data. */
1597 if (zero_case && (ascii85_len == 4)) {
1598 if (ascii85_linewidth >= max_linewidth) {
1599 os << '\n';
1600 ascii85_linewidth = 0;
1601 }
1602 os << 'z';
1603 ascii85_linewidth++;
1604 } else {
1605 for (int i = 0; i < ascii85_len+1; i++) {
1606 if ((ascii85_linewidth >= max_linewidth) && (c[i] != '%')) {
1607 os << '\n';
1608 ascii85_linewidth = 0;
1609 }
1610 os << c[i];
1611 ascii85_linewidth++;
1612 }
1613 }
1615 ascii85_len = 0;
1616 ascii85_buf = 0;
1617 }
1619 inline void
1620 PrintPS::ascii85_out(guchar byte, SVGOStringStream &os)
1621 {
1622 if (ascii85_len == 4)
1623 ascii85_flush(os);
1625 ascii85_buf <<= 8;
1626 ascii85_buf |= byte;
1627 ascii85_len++;
1628 }
1630 void
1631 PrintPS::ascii85_nout(int n, guchar *uptr, SVGOStringStream &os)
1632 {
1633 while (n-- > 0) {
1634 ascii85_out(*uptr, os);
1635 uptr++;
1636 }
1637 }
1639 void
1640 PrintPS::ascii85_done(SVGOStringStream &os)
1641 {
1642 if (ascii85_len) {
1643 /* zero any unfilled buffer portion, then flush */
1644 ascii85_buf <<= (8 * (4-ascii85_len));
1645 ascii85_flush(os);
1646 }
1648 os << "~>\n";
1649 }
1651 unsigned int
1652 PrintPS::print_image(FILE *ofp, guchar *px, unsigned int width, unsigned int height, unsigned int rs,
1653 Geom::Matrix const *transform)
1654 {
1655 Inkscape::SVGOStringStream os;
1657 os << "gsave\n";
1659 os << "[" << (*transform)[0] << " "
1660 << (*transform)[1] << " "
1661 << (*transform)[2] << " "
1662 << (*transform)[3] << " "
1663 << (*transform)[4] << " "
1664 << (*transform)[5] << "] concat\n";
1666 /* Write read image procedure */
1667 os << "<<\n";
1668 os << " /ImageType 3\n";
1669 os << " /InterleaveType 1\n";
1671 os << " /MaskDict\n";
1672 os << " <<\n";
1673 os << " /ImageType 1\n";
1674 os << " /Width " << width << "\n";
1675 os << " /Height " << height << "\n";
1676 os << " /ImageMatrix "
1677 << "[" << width << " "
1678 << 0 << " "
1679 << 0 << " "
1680 << -((long) height) << " "
1681 << 0 << " "
1682 << height << "]\n";
1683 os << " /BitsPerComponent 8\n";
1684 os << " /Decode [1 0]\n";
1685 os << " >>\n";
1687 os << " /DataDict\n";
1688 os << " <<\n";
1689 os << " /ImageType 1\n";
1690 os << " /Width " << width << "\n";
1691 os << " /Height " << height << "\n";
1692 os << " /ImageMatrix "
1693 << "[" << width << " "
1694 << 0 << " "
1695 << 0 << " "
1696 << -((long )height) << " "
1697 << 0 << " "
1698 << height << "]\n";
1699 os << " /DataSource currentfile /ASCII85Decode filter\n";
1700 os << " /BitsPerComponent 8\n";
1701 os << " /Decode [0 1 0 1 0 1]\n";
1702 os << " >>\n";
1704 os << ">>\n";
1706 /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
1707 guchar *const packb = (guchar *)g_malloc((4*width * 105)/100+2);
1708 guchar *const plane = (guchar *)g_malloc(4*width);
1710 os << "image\n";
1712 ascii85_init();
1714 for (unsigned i = 0; i < height; i++) {
1715 guchar const *const src = px + i * rs;
1717 guchar const *src_ptr = src;
1718 guchar *plane_ptr = plane;
1719 for (unsigned j = 0; j < width; j++) {
1720 *(plane_ptr++) = *(src_ptr+3);
1721 *(plane_ptr++) = *(src_ptr+0);
1722 *(plane_ptr++) = *(src_ptr+1);
1723 *(plane_ptr++) = *(src_ptr+2);
1724 src_ptr += 4;
1725 }
1727 ascii85_nout(4*width, plane, os);
1728 }
1729 ascii85_done(os);
1731 g_free(packb);
1732 g_free(plane);
1734 os << "grestore\n";
1736 fprintf(ofp, "%s", os.str().c_str());
1738 return 0;
1739 }
1741 bool
1742 PrintPS::textToPath(Inkscape::Extension::Print * ext)
1743 {
1744 return ext->get_param_bool("textToPath");
1745 }
1747 /**
1748 * \brief Get "fontEmbedded" param
1749 * \retval TRUE Fonts have to be embedded in the output so that the user might not need to install fonts to have the interpreter read the document correctly
1750 * \retval FALSE No font embedding
1751 *
1752 * Only available for Adobe Type 1 fonts in EPS output till now
1753 */
1754 bool
1755 PrintPS::fontEmbedded(Inkscape::Extension::Print * ext)
1756 {
1757 return ext->get_param_bool("fontEmbedded");
1758 }
1760 #include "clear-n_.h"
1762 void
1763 PrintPS::init(void)
1764 {
1765 /* SVG in */
1766 (void) Inkscape::Extension::build_from_mem(
1767 "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
1768 "<name>" N_("Postscript Print") "</name>\n"
1769 "<id>" SP_MODULE_KEY_PRINT_PS "</id>\n"
1770 "<param name=\"bitmap\" type=\"boolean\">false</param>\n"
1771 "<param name=\"resolution\" type=\"string\">72</param>\n"
1772 "<param name=\"destination\" type=\"string\">| lp</param>\n"
1773 "<param name=\"pageBoundingBox\" type=\"boolean\">true</param>\n"
1774 "<param name=\"textToPath\" type=\"boolean\">true</param>\n"
1775 "<param name=\"fontEmbedded\" type=\"boolean\">false</param>\n"
1776 "<print/>\n"
1777 "</inkscape-extension>", new PrintPS());
1778 }
1781 } /* namespace Internal */
1782 } /* namespace Extension */
1783 } /* namespace Inkscape */
1785 /* End of GNU GPL code */
1788 /*
1789 Local Variables:
1790 mode:c++
1791 c-file-style:"stroustrup"
1792 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1793 indent-tabs-mode:nil
1794 fill-column:99
1795 End:
1796 */
1797 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :