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/n-art-bpath.h>
36 #include <glib/gmem.h>
37 #include <gtk/gtkstock.h>
38 #include <gtk/gtkvbox.h>
39 #include <gtk/gtkframe.h>
40 #include <gtk/gtkradiobutton.h>
41 #include <gtk/gtkcombo.h>
42 #include <gtk/gtklabel.h>
43 #include <gtk/gtkentry.h>
44 #include <gtk/gtktooltips.h>
46 #include <glibmm/i18n.h>
47 #include "display/nr-arena-item.h"
48 #include "display/canvas-bpath.h"
49 #include "sp-item.h"
50 #include "style.h"
51 #include "sp-linear-gradient.h"
52 #include "sp-radial-gradient.h"
54 #include "libnrtype/font-instance.h"
55 #include "libnrtype/font-style-to-pos.h"
57 #include <unit-constants.h>
59 #include "ps.h"
60 #include "extension/system.h"
61 #include "extension/print.h"
63 #include "io/sys.h"
65 #include <ft2build.h>
66 #include FT_FREETYPE_H
67 #include FT_XFREE86_H
68 #include <pango/pangoft2.h>
69 #include <string>
70 #include <iostream>
71 #include <fstream>
73 using namespace std;
75 namespace Inkscape {
76 namespace Extension {
77 namespace Internal {
79 PrintPS::PrintPS() :
80 _stream(NULL),
81 _dpi(72),
82 _bitmap(false)
83 {
84 //map font types
85 _fontTypesMap["Type 1"] = FONT_TYPE1;
86 _fontTypesMap["TrueType"] = FONT_TRUETYPE;
87 //TODO: support other font types (cf. embed_font())
88 }
90 PrintPS::~PrintPS(void)
91 {
92 /* fixme: should really use pclose for popen'd streams */
93 if (_stream) fclose(_stream);
94 if(_begin_stream) fclose(_begin_stream);
95 if(_fonts) g_tree_destroy(_fonts);
97 /* restore default signal handling for SIGPIPE */
98 #if !defined(_WIN32) && !defined(__WIN32__)
99 (void) signal(SIGPIPE, SIG_DFL);
100 #endif
102 return;
103 }
105 unsigned int
106 PrintPS::setup(Inkscape::Extension::Print * mod)
107 {
108 static gchar const *const pdr[] = {"72", "75", "100", "144", "150", "200", "300", "360", "600", "1200", "2400", NULL};
110 #ifdef TED
111 Inkscape::XML::Node *repr = ((SPModule *) mod)->repr;
112 #endif
114 unsigned int ret = FALSE;
115 gchar const *destination = mod->get_param_string("destination");
117 /* Create dialog */
118 GtkTooltips *tt = gtk_tooltips_new();
119 g_object_ref((GObject *) tt);
120 gtk_object_sink((GtkObject *) tt);
122 GtkWidget *dlg = gtk_dialog_new_with_buttons(
123 destination ? _("Print Configuration") : _("Print Destination"),
124 // SP_DT_WIDGET(SP_ACTIVE_DESKTOP)->window,
125 NULL,
126 (GtkDialogFlags) (GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR | GTK_DIALOG_DESTROY_WITH_PARENT),
127 GTK_STOCK_CANCEL,
128 GTK_RESPONSE_CANCEL,
129 destination ? GTK_STOCK_GO_FORWARD : GTK_STOCK_PRINT,
130 GTK_RESPONSE_OK,
131 NULL);
133 gtk_dialog_set_default_response(GTK_DIALOG(dlg), GTK_RESPONSE_OK);
135 GtkWidget *vbox = GTK_DIALOG(dlg)->vbox;
136 gtk_container_set_border_width(GTK_CONTAINER(vbox), 4);
137 /* Print properties frame */
138 GtkWidget *f = gtk_frame_new(_("Print properties"));
139 gtk_box_pack_start(GTK_BOX(vbox), f, FALSE, FALSE, 4);
140 GtkWidget *vb = gtk_vbox_new(FALSE, 4);
141 gtk_container_add(GTK_CONTAINER(f), vb);
142 gtk_container_set_border_width(GTK_CONTAINER(vb), 4);
143 /* Print type */
144 bool const p2bm = mod->get_param_bool("bitmap");
145 GtkWidget *rb = gtk_radio_button_new_with_label(NULL, _("Print using PostScript operators"));
146 gtk_tooltips_set_tip((GtkTooltips *) tt, rb,
147 _("Use PostScript vector operators. The resulting image is usually smaller "
148 "in file size and can be arbitrarily scaled, but alpha transparency "
149 "and patterns will be lost."), NULL);
150 if (!p2bm) gtk_toggle_button_set_active((GtkToggleButton *) rb, TRUE);
151 gtk_box_pack_start(GTK_BOX(vb), rb, FALSE, FALSE, 0);
152 rb = gtk_radio_button_new_with_label(gtk_radio_button_get_group((GtkRadioButton *) rb), _("Print as bitmap"));
153 gtk_tooltips_set_tip((GtkTooltips *) tt, rb,
154 _("Print everything as bitmap. The resulting image is usually larger "
155 "in file size and cannot be arbitrarily scaled without quality loss, "
156 "but all objects will be rendered exactly as displayed."), NULL);
157 if (p2bm) gtk_toggle_button_set_active((GtkToggleButton *) rb, TRUE);
158 gtk_box_pack_start(GTK_BOX(vb), rb, FALSE, FALSE, 0);
159 /* Resolution */
160 GtkWidget *hb = gtk_hbox_new(FALSE, 4);
161 gtk_box_pack_start(GTK_BOX(vb), hb, FALSE, FALSE, 0);
162 GtkWidget *combo = gtk_combo_new();
163 gtk_combo_set_value_in_list(GTK_COMBO(combo), FALSE, FALSE);
164 gtk_combo_set_use_arrows(GTK_COMBO(combo), TRUE);
165 gtk_combo_set_use_arrows_always(GTK_COMBO(combo), TRUE);
166 gtk_widget_set_size_request(combo, 64, -1);
167 gtk_tooltips_set_tip((GtkTooltips *) tt, GTK_COMBO(combo)->entry,
168 _("Preferred resolution (dots per inch) of bitmap"), NULL);
169 /* Setup strings */
170 GList *sl = NULL;
171 for (unsigned i = 0; pdr[i] != NULL; i++) {
172 sl = g_list_prepend(sl, (gpointer) pdr[i]);
173 }
174 sl = g_list_reverse(sl);
175 gtk_combo_set_popdown_strings(GTK_COMBO(combo), sl);
176 g_list_free(sl);
177 if (1) {
178 gchar const *val = mod->get_param_string("resolution");
179 gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(combo)->entry), val);
180 }
181 gtk_box_pack_end(GTK_BOX(hb), combo, FALSE, FALSE, 0);
182 GtkWidget *l = gtk_label_new(_("Resolution:"));
183 gtk_box_pack_end(GTK_BOX(hb), l, FALSE, FALSE, 0);
185 GtkWidget *e = NULL;
186 /* if the destination isn't already set, we must prompt for it */
187 if (!destination) {
188 /* Print destination frame */
189 f = gtk_frame_new(_("Print destination"));
190 gtk_box_pack_start(GTK_BOX(vbox), f, FALSE, FALSE, 4);
191 vb = gtk_vbox_new(FALSE, 4);
192 gtk_container_add(GTK_CONTAINER(f), vb);
193 gtk_container_set_border_width(GTK_CONTAINER(vb), 4);
195 l = gtk_label_new(_("Printer name (as given by lpstat -p);\n"
196 "leave empty to use the system default printer.\n"
197 "Use '> filename' to print to file.\n"
198 "Use '| prog arg...' to pipe to a program."));
199 gtk_box_pack_start(GTK_BOX(vb), l, FALSE, FALSE, 0);
201 e = gtk_entry_new();
202 gtk_entry_set_text(GTK_ENTRY(e), ( destination != NULL
203 ? destination
204 : "" ));
205 gtk_box_pack_start(GTK_BOX(vb), e, FALSE, FALSE, 0);
207 // pressing enter in the destination field is the same as clicking Print:
208 gtk_entry_set_activates_default(GTK_ENTRY(e), TRUE);
209 }
211 gtk_widget_show_all(vbox);
213 int const response = gtk_dialog_run(GTK_DIALOG(dlg));
215 g_object_unref((GObject *) tt);
217 if (response == GTK_RESPONSE_OK) {
218 gchar const *fn;
219 char const *sstr;
221 _bitmap = gtk_toggle_button_get_active((GtkToggleButton *) rb);
222 sstr = gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(combo)->entry));
223 _dpi = (unsigned int) MAX((int)(atof(sstr)), 1);
225 /* if the destination was prompted for, record the new value */
226 if (e) {
227 /* Arrgh, have to do something */
228 fn = gtk_entry_get_text(GTK_ENTRY(e));
229 /* skip leading whitespace, bug #1068483 */
230 while (fn && *fn==' ') { fn++; }
231 /* g_print("Printing to %s\n", fn); */
233 mod->set_param_string("destination", (gchar *)fn);
234 }
235 mod->set_param_bool("bitmap", _bitmap);
236 mod->set_param_string("resolution", (gchar *)sstr);
237 ret = TRUE;
238 }
240 gtk_widget_destroy(dlg);
242 return ret;
243 }
245 unsigned int
246 PrintPS::begin(Inkscape::Extension::Print *mod, SPDocument *doc)
247 {
248 gboolean epsexport = false;
251 _latin1_encoded_fonts.clear();
252 _newlatin1font_proc_defined = false;
254 FILE *osf = NULL;
255 FILE *osp = NULL;
256 FILE *osf_tmp = NULL;
258 gsize bytesRead = 0;
259 gsize bytesWritten = 0;
260 GError *error = NULL;
261 //check whether fonts have to be embedded in the (EPS only) output
262 bool font_embedded = mod->fontEmbedded();
263 gchar const *utf8_fn = mod->get_param_string("destination");
264 gchar *local_fn = g_filename_from_utf8( utf8_fn,
265 -1, &bytesRead, &bytesWritten, &error);
266 gchar const *fn = local_fn;
268 /* TODO: Replace the below fprintf's with something that does the right thing whether in
269 * gui or batch mode (e.g. --print=blah). Consider throwing an exception: currently one of
270 * the callers (sp_print_document_to_file, "ret = mod->begin(doc)") wrongly ignores the
271 * return code.
272 */
273 if (fn != NULL) {
274 if (*fn == '|') {
275 fn += 1;
276 while (isspace(*fn)) fn += 1;
277 #ifndef WIN32
278 osp = popen(fn, "w");
279 #else
280 osp = _popen(fn, "w");
281 #endif
282 if (!osp) {
283 fprintf(stderr, "inkscape: popen(%s): %s\n",
284 fn, strerror(errno));
285 return 0;
286 }
287 _stream = _begin_stream = osp;
288 } else if (*fn == '>') {
289 fn += 1;
290 epsexport = g_str_has_suffix(fn,".eps");
291 while (isspace(*fn)) fn += 1;
292 Inkscape::IO::dump_fopen_call(fn, "K");
293 osf = Inkscape::IO::fopen_utf8name(fn, "w+");
294 if (!osf) {
295 fprintf(stderr, "inkscape: fopen(%s): %s\n",
296 fn, strerror(errno));
297 return 0;
298 }
299 _begin_stream = osf;
300 /* if font embedding is requested for EPS export...
301 * TODO:could be extended to PS export if texttopath=FALSE possible
302 */
303 if(font_embedded && epsexport)
304 {
305 /**
306 * Create temporary file where to print the main "script" part of the EPS document.
307 * Use an extra stream (_begin_stream) to print the prolog and document setup sections.
308 * Thus, once all the (main) script part printed, all the fonts used are known and can be embedded
309 * just after the prolog section, in a Begin(End)Setup section (document setup),
310 * one Begin(End)Resource (DSC comment) section for each font embedded.
311 * Then, append the final script part from the temporary file (_stream in this case).
312 * Reference: Adobe Technical note 5001, "PostScript Document Struturing Conventions Specifications"
313 * page 19
314 */
315 osf_tmp = tmpfile();
316 if(!osf_tmp)
317 {
318 g_warning("Could not create a temporary file for font embedding. Font embedding canceled.");
319 mod->set_param_bool("fontEmbedded", false);
320 font_embedded = false;
321 _stream = osf;
322 } else _stream = osf_tmp;
323 } else _stream = osf;
324 } else {
325 /* put cwd stuff in here */
326 gchar *qn = ( *fn
327 ? g_strdup_printf("lpr -P %s", fn) /* FIXME: quote fn */
328 : g_strdup("lpr") );
329 #ifndef WIN32
330 osp = popen(qn, "w");
331 #else
332 osp = _popen(qn, "w");
333 #endif
334 if (!osp) {
335 fprintf(stderr, "inkscape: popen(%s): %s\n",
336 qn, strerror(errno));
337 return 0;
338 }
339 g_free(qn);
340 _stream = _begin_stream = osp;
341 }
342 }
344 g_free(local_fn);
346 if (_stream) {
347 /* fixme: this is kinda icky */
348 #if !defined(_WIN32) && !defined(__WIN32__)
349 (void) signal(SIGPIPE, SIG_IGN);
350 #endif
351 }
353 int const res = fprintf(_begin_stream, ( epsexport
354 ? "%%!PS-Adobe-3.0 EPSF-3.0\n"
355 : "%%!PS-Adobe-3.0\n" ));
356 /* flush this to test output stream as early as possible */
357 if (fflush(_begin_stream)) {
358 /*g_print("caught error in sp_module_print_plain_begin\n");*/
359 if (ferror(_begin_stream)) {
360 g_print("Error %d on output stream: %s\n", errno,
361 g_strerror(errno));
362 }
363 g_print("Printing failed\n");
364 /* fixme: should use pclose() for pipes */
365 fclose(_begin_stream);
366 _begin_stream = NULL;
367 fflush(stdout);
368 return 0;
369 }
370 //TODO: do this same test on _stream
372 // width and height in pt
373 _width = sp_document_width(doc) * PT_PER_PX;
374 _height = sp_document_height(doc) * PT_PER_PX;
376 NRRect d;
377 bool pageBoundingBox;
378 bool pageLandscape;
379 pageBoundingBox = mod->get_param_bool("pageBoundingBox");
380 // printf("Page Bounding Box: %s\n", pageBoundingBox ? "TRUE" : "FALSE");
381 if (pageBoundingBox) {
382 d.x0 = d.y0 = 0;
383 d.x1 = ceil(_width);
384 d.y1 = ceil(_height);
385 } else {
386 SPItem* doc_item = SP_ITEM(sp_document_root(doc));
387 sp_item_invoke_bbox(doc_item, &d, sp_item_i2r_affine(doc_item), TRUE);
388 // convert from px to pt
389 d.x0 *= PT_PER_PX;
390 d.x1 *= PT_PER_PX;
391 d.y0 *= PT_PER_PX;
392 d.y1 *= PT_PER_PX;
393 }
395 Inkscape::SVGOStringStream os;
396 if (res >= 0) {
398 os << "%%Creator: " << PACKAGE_STRING << "\n";
399 // This will become problematic if inkscape gains the
400 // ability to handle multi paged documents. If this is
401 // the case the %%Orientation: comments should be
402 // renamed to %%PageOrientation: and moved to the
403 // respective pages.
404 os << "%%Pages: 1\n";
406 // 2004 Dec 10, BFC:
407 // The point of the following code is (1) to do the thing that's expected by users
408 // who have done File>New>A4_landscape or ...letter_landscape (i.e., rotate
409 // the output), while (2) not messing up users who simply want their output wider
410 // than it is tall (e.g., small figures for inclusion in LaTeX).
411 // The original patch by WQ only had the w>h condition.
412 {
413 double w = (d.x1 - d.x0); // width and height of bounding box, in pt
414 double h = (d.y1 - d.y0);
415 pageLandscape = (
416 (w > 0. && h > 0.) // empty documents fail this sanity check, have w<0, h<0
417 && (w > h) // implies, but does not prove, the user wanted landscape
418 && (w > 600) // approximate maximum printable width of an A4
419 && (!epsexport) // eps should always be portrait
420 )
421 ? true : false;
422 }
424 if (pageLandscape) {
425 os << "%%Orientation: Landscape\n";
426 os << "%%BoundingBox: " << (int) (_height - d.y1) << " "
427 << (int) d.x0 << " "
428 << (int) ceil(_height - d.y0) << " "
429 << (int) ceil(d.x1) << "\n";
430 // According to Mike Sweet (the author of CUPS)
431 // HiResBoundingBox is only appropriate
432 // for EPS files. This means that we should
433 // distinguish if we export to ps or eps here.
434 // FIXME: I couldn't find HiResBoundingBox in the PS
435 // reference manual, so I guess we should skip
436 // it.
437 os << "%%HiResBoundingBox: " << (_height - d.y1) << " "
438 << d.x0 << " "
439 << (_height - d.y0) << " "
440 << d.x1 << "\n";
441 if (!epsexport) {
442 os << "%%DocumentMedia: plain "
443 << (int) ceil(_height) << " "
444 << (int) ceil(_width) << " "
445 << "0 () ()\n";
446 }
447 } else {
448 os << "%%Orientation: Portrait\n";
449 os << "%%BoundingBox: " << (int) d.x0 << " "
450 << (int) d.y0 << " "
451 << (int) ceil(d.x1) << " "
452 << (int) ceil(d.y1) << "\n";
453 os << "%%HiResBoundingBox: " << d.x0 << " "
454 << d.y0 << " "
455 << d.x1 << " "
456 << d.y1 << "\n";
457 if (!epsexport) {
458 os << "%%DocumentMedia: plain "
459 << (int) ceil(_width) << " "
460 << (int) ceil(_height) << " "
461 << "0 () ()\n";
462 }
463 }
465 os << "%%EndComments\n";
466 /* If font embedding requested, begin document setup section where to include font resources */
467 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. */
468 gint ret = fprintf(_begin_stream, "%s", os.str().c_str());
469 if(ret < 0) return ret;
471 /* Main Script part (after document setup) begins */
472 /* Empty os from all previous printing */
473 std::string clrstr = "";
474 os.str(clrstr);
475 // This will become problematic if we print multi paged documents:
476 os << "%%Page: 1 1\n";
478 if (pageLandscape) {
479 os << "90 rotate\n";
480 if (_bitmap) {
481 os << "0 " << (int) -ceil(_height) << " translate\n";
482 }
483 } else {
484 if (!_bitmap) {
485 os << "0 " << (int) ceil(_height) << " translate\n";
486 }
487 }
489 if (!_bitmap) {
490 os << PT_PER_PX << " " << -PT_PER_PX << " scale\n";
491 // from now on we can output px, but they will be treated as pt
492 }
494 /* As a new PS document is created, _fontlist has to be reinitialized (unref fonts from possible former PS docs) */
495 _fonts = g_tree_new_full((GCompareDataFunc)strcmp, NULL, (GDestroyNotify)g_free, (GDestroyNotify)g_free);
496 }
498 os << "0 0 0 setrgbcolor\n"
499 << "[] 0 setdash\n"
500 << "1 setlinewidth\n"
501 << "0 setlinejoin\n"
502 << "0 setlinecap\n";
504 /* FIXME: This function is declared to return unsigned, whereas fprintf returns a signed int *
505 * that can be zero if the first fprintf failed (os is empty) or "negative" (i.e. very positive
506 * in unsigned int interpretation) if the first fprintf failed but this one succeeds, or
507 * positive if both succeed. */
508 return fprintf(_stream, "%s", os.str().c_str());
509 }
511 unsigned int
512 PrintPS::finish(Inkscape::Extension::Print *mod)
513 {
514 if (!_stream) return 0;
516 if (_bitmap) {
517 double const dots_per_pt = _dpi / PT_PER_IN;
519 double const x0 = 0.0;
520 double const y0 = 0.0;
521 double const x1 = x0 + _width;
522 double const y1 = y0 + _height;
524 /* Bitmap width/height in bitmap dots. */
525 int const width = (int) (_width * dots_per_pt + 0.5);
526 int const height = (int) (_height * dots_per_pt + 0.5);
528 NRMatrix affine;
529 affine.c[0] = width / ((x1 - x0) * PX_PER_PT);
530 affine.c[1] = 0.0;
531 affine.c[2] = 0.0;
532 affine.c[3] = height / ((y1 - y0) * PX_PER_PT);
533 affine.c[4] = -affine.c[0] * x0;
534 affine.c[5] = -affine.c[3] * y0;
536 nr_arena_item_set_transform(mod->root, &affine);
538 guchar *const px = g_new(guchar, 4 * width * 64);
540 for (int y = 0; y < height; y += 64) {
541 /* Set area of interest. */
542 NRRectL bbox;
543 bbox.x0 = 0;
544 bbox.y0 = y;
545 bbox.x1 = width;
546 bbox.y1 = MIN(height, y + 64);
548 /* Update to renderable state. */
549 NRGC gc(NULL);
550 nr_matrix_set_identity(&gc.transform);
551 nr_arena_item_invoke_update(mod->root, &bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
552 /* Render */
553 /* This should take guchar* instead of unsigned char*) */
554 NRPixBlock pb;
555 nr_pixblock_setup_extern(&pb, NR_PIXBLOCK_MODE_R8G8B8A8N,
556 bbox.x0, bbox.y0, bbox.x1, bbox.y1,
557 (guchar*)px, 4 * width, FALSE, FALSE);
558 memset(px, 0xff, 4 * width * 64);
559 nr_arena_item_invoke_render(NULL, mod->root, &bbox, &pb, 0);
560 /* Blitter goes here */
561 NRMatrix imgt;
562 imgt.c[0] = (bbox.x1 - bbox.x0) / dots_per_pt;
563 imgt.c[1] = 0.0;
564 imgt.c[2] = 0.0;
565 imgt.c[3] = (bbox.y1 - bbox.y0) / dots_per_pt;
566 imgt.c[4] = 0.0;
567 imgt.c[5] = _height - y / dots_per_pt - (bbox.y1 - bbox.y0) / dots_per_pt;
569 print_image(_stream, px, bbox.x1 - bbox.x0, bbox.y1 - bbox.y0, 4 * width, &imgt);
570 }
572 g_free(px);
573 }
575 fprintf(_stream, "showpage\n");
576 int const res = fprintf(_stream, "%%%%EOF\n");
578 /* Flush stream to be sure. */
579 (void) fflush(_stream);
581 char c;
582 /* If font embedding... */
583 if(mod->get_param_bool("fontEmbedded"))
584 {
585 /* Close the document setup section that had been started (because all the needed resources are supposed to be included now) */
586 /*res = */fprintf(_begin_stream, "%s", "%%EndSetup\n");
587 /* 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 */
588 if(fseek(_stream, 0, SEEK_SET) == 0)
589 {
590 while((c = fgetc(_stream))!=EOF) fputc(c, _begin_stream);
591 }
592 fclose(_stream);
593 _stream = _begin_stream;
594 }
596 /* fixme: should really use pclose for popen'd streams */
597 fclose(_stream);
598 _stream = NULL;
600 _latin1_encoded_fonts.clear();
602 g_tree_destroy(_fonts);
604 return res;
605 }
607 unsigned int
608 PrintPS::bind(Inkscape::Extension::Print *mod, NRMatrix const *transform, float opacity)
609 {
610 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
611 if (_bitmap) return 0;
613 Inkscape::SVGOStringStream os;
614 os << "gsave [" << transform->c[0] << " "
615 << transform->c[1] << " "
616 << transform->c[2] << " "
617 << transform->c[3] << " "
618 << transform->c[4] << " "
619 << transform->c[5] << "] concat\n";
621 return fprintf(_stream, "%s", os.str().c_str());
622 }
624 unsigned int
625 PrintPS::release(Inkscape::Extension::Print *mod)
626 {
627 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
628 if (_bitmap) return 0;
630 return fprintf(_stream, "grestore\n");
631 }
633 unsigned int
634 PrintPS::comment(Inkscape::Extension::Print *mod, char const *comment)
635 {
636 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
637 if (_bitmap) return 0;
639 return fprintf(_stream, "%%! %s\n",comment);
640 }
642 void
643 PrintPS::print_fill_style(SVGOStringStream &os, SPStyle const *const style, NRRect const *pbox)
644 {
645 g_return_if_fail( style->fill.type == SP_PAINT_TYPE_COLOR
646 || ( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
647 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) );
649 if (style->fill.type == SP_PAINT_TYPE_COLOR) {
650 float rgb[3];
651 sp_color_get_rgb_floatv(&style->fill.value.color, rgb);
653 os << rgb[0] << " " << rgb[1] << " " << rgb[2] << " setrgbcolor\n";
655 } else {
656 g_assert( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
657 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
659 if (SP_IS_LINEARGRADIENT(SP_STYLE_FILL_SERVER(style))) {
661 SPLinearGradient *lg = SP_LINEARGRADIENT(SP_STYLE_FILL_SERVER(style));
662 NR::Point p1 (lg->x1.computed, lg->y1.computed);
663 NR::Point p2 (lg->x2.computed, lg->y2.computed);
664 if (pbox && SP_GRADIENT(lg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
665 // convert to userspace
666 NR::Matrix bbox2user(pbox->x1 - pbox->x0, 0, 0, pbox->y1 - pbox->y0, pbox->x0, pbox->y0);
667 p1 *= bbox2user;
668 p2 *= bbox2user;
669 }
671 os << "<<\n/ShadingType 2\n/ColorSpace /DeviceRGB\n";
672 os << "/Coords [" << p1[NR::X] << " " << p1[NR::Y] << " " << p2[NR::X] << " " << p2[NR::Y] <<"]\n";
673 os << "/Extend [true true]\n";
674 os << "/Domain [0 1]\n";
675 os << "/Function <<\n/FunctionType 3\n/Functions\n[\n";
677 sp_gradient_ensure_vector(SP_GRADIENT(lg)); // when exporting from commandline, vector is not built
678 for (unsigned i = 0; i + 1 < lg->vector.stops.size(); i++) {
679 float rgb[3];
680 sp_color_get_rgb_floatv(&lg->vector.stops[i].color, rgb);
681 os << "<<\n/FunctionType 2\n/Domain [0 1]\n";
682 os << "/C0 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
683 sp_color_get_rgb_floatv(&lg->vector.stops[i+1].color, rgb);
684 os << "/C1 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
685 os << "/N 1\n>>\n";
686 }
687 os << "]\n/Domain [0 1]\n";
688 os << "/Bounds [ ";
689 for (unsigned i = 0; i + 2 < lg->vector.stops.size(); i++) {
690 os << lg->vector.stops[i+1].offset <<" ";
691 }
692 os << "]\n";
693 os << "/Encode [ ";
694 for (unsigned i = 0; i + 1 < lg->vector.stops.size(); i++) {
695 os << "0 1 ";
696 }
697 os << "]\n";
698 os << ">>\n>>\n";
700 } else if (SP_IS_RADIALGRADIENT(SP_STYLE_FILL_SERVER(style))) {
702 SPRadialGradient *rg = SP_RADIALGRADIENT(SP_STYLE_FILL_SERVER(style));
703 NR::Point c(rg->cx.computed, rg->cy.computed);
704 NR::Point f(rg->fx.computed, rg->fy.computed);
705 double r = rg->r.computed;
706 if (pbox && SP_GRADIENT(rg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
707 // convert to userspace
708 NR::Matrix const bbox2user(pbox->x1 - pbox->x0, 0,
709 0, pbox->y1 - pbox->y0,
710 pbox->x0, pbox->y0);
711 c *= bbox2user;
712 f *= bbox2user;
713 r *= bbox2user.expansion();
714 }
716 os << "<<\n/ShadingType 3\n/ColorSpace /DeviceRGB\n";
717 os << "/Coords ["<< f[NR::X] <<" "<< f[NR::Y] <<" 0 "<< c[NR::X] <<" "<< c[NR::Y] <<" "<< r <<"]\n";
718 os << "/Extend [true true]\n";
719 os << "/Domain [0 1]\n";
720 os << "/Function <<\n/FunctionType 3\n/Functions\n[\n";
722 sp_gradient_ensure_vector(SP_GRADIENT(rg)); // when exporting from commandline, vector is not built
723 for (unsigned i = 0; i + 1 < rg->vector.stops.size(); i++) {
724 float rgb[3];
725 sp_color_get_rgb_floatv(&rg->vector.stops[i].color, rgb);
726 os << "<<\n/FunctionType 2\n/Domain [0 1]\n";
727 os << "/C0 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
728 sp_color_get_rgb_floatv(&rg->vector.stops[i+1].color, rgb);
729 os << "/C1 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
730 os << "/N 1\n>>\n";
731 }
732 os << "]\n/Domain [0 1]\n";
733 os << "/Bounds [ ";
734 for (unsigned i = 0; i + 2 < rg->vector.stops.size(); i++) {
735 os << rg->vector.stops[i+1].offset << " ";
736 }
737 os << "]\n";
738 os << "/Encode [ ";
739 for (unsigned i = 0; i + 1 < rg->vector.stops.size(); i++) {
740 os << "0 1 ";
741 }
742 os << "]\n";
743 os << ">>\n>>\n";
744 }
745 }
746 }
748 void
749 PrintPS::print_stroke_style(SVGOStringStream &os, SPStyle const *style)
750 {
751 float rgb[3];
752 sp_color_get_rgb_floatv(&style->stroke.value.color, rgb);
754 os << rgb[0] << " " << rgb[1] << " " << rgb[2] << " setrgbcolor\n";
756 // There are rare cases in which for a solid line stroke_dasharray_set is true. To avoid
757 // invalid PS-lines such as "[0.0000000 0.0000000] 0.0000000 setdash", which should be "[] 0 setdash",
758 // we first check if all components of stroke_dash.dash are 0.
759 bool LineSolid = true;
760 if (style->stroke_dash.n_dash &&
761 style->stroke_dash.dash )
762 {
763 int i = 0;
764 while (LineSolid && (i < style->stroke_dash.n_dash)) {
765 if (style->stroke_dash.dash[i] > 0.00000001)
766 LineSolid = false;
767 i++;
768 }
769 if (!LineSolid) {
770 os << "[";
771 for (i = 0; i < style->stroke_dash.n_dash; i++) {
772 if (i > 0) {
773 os << " ";
774 }
775 os << style->stroke_dash.dash[i];
776 }
777 os << "] " << style->stroke_dash.offset << " setdash\n";
778 } else {
779 os << "[] 0 setdash\n";
780 }
781 } else {
782 os << "[] 0 setdash\n";
783 }
785 os << style->stroke_width.computed << " setlinewidth\n";
786 os << style->stroke_linejoin.computed << " setlinejoin\n";
787 os << style->stroke_linecap.computed << " setlinecap\n";
788 }
791 unsigned int
792 PrintPS::fill(Inkscape::Extension::Print *mod, NRBPath const *bpath, NRMatrix const *ctm, SPStyle const *const style,
793 NRRect const *pbox, NRRect const *dbox, NRRect const *bbox)
794 {
795 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
796 if (_bitmap) return 0;
798 if ( style->fill.type == SP_PAINT_TYPE_COLOR
799 || ( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
800 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) )
801 {
802 Inkscape::SVGOStringStream os;
804 os << "gsave\n";
806 print_fill_style(os, style, pbox);
808 print_bpath(os, bpath->path);
810 if (style->fill_rule.value == SP_WIND_RULE_EVENODD) {
811 if (style->fill.type == SP_PAINT_TYPE_COLOR) {
812 os << "eofill\n";
813 } else {
814 g_assert( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
815 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
816 SPGradient const *g = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
817 os << "eoclip\n";
818 if (g->gradientTransform_set) {
819 os << "gsave [" << g->gradientTransform[0] << " " << g->gradientTransform[1]
820 << " " << g->gradientTransform[2] << " " << g->gradientTransform[3]
821 << " " << g->gradientTransform[4] << " " << g->gradientTransform[5] << "] concat\n";
822 }
823 os << "shfill\n";
824 if (g->gradientTransform_set) {
825 os << "grestore\n";
826 }
827 }
828 } else {
829 if (style->fill.type == SP_PAINT_TYPE_COLOR) {
830 os << "fill\n";
831 } else {
832 g_assert( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
833 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
834 SPGradient const *g = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
835 os << "clip\n";
836 if (g->gradientTransform_set) {
837 os << "gsave [" << g->gradientTransform[0] << " " << g->gradientTransform[1]
838 << " " << g->gradientTransform[2] << " " << g->gradientTransform[3]
839 << " " << g->gradientTransform[4] << " " << g->gradientTransform[5] << "] concat\n";
840 }
841 os << "shfill\n";
842 if (g->gradientTransform_set) {
843 os << "grestore\n";
844 }
845 }
846 }
848 os << "grestore\n";
850 fprintf(_stream, "%s", os.str().c_str());
851 }
853 return 0;
854 }
857 unsigned int
858 PrintPS::stroke(Inkscape::Extension::Print *mod, NRBPath const *bpath, NRMatrix const *ctm, SPStyle const *style,
859 NRRect const *pbox, NRRect const *dbox, NRRect const *bbox)
860 {
861 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
862 if (_bitmap) return 0;
864 if (style->stroke.type == SP_PAINT_TYPE_COLOR) {
865 Inkscape::SVGOStringStream os;
867 print_stroke_style(os, style);
869 print_bpath(os, bpath->path);
871 os << "stroke\n";
873 fprintf(_stream, "%s", os.str().c_str());
874 }
876 return 0;
877 }
879 unsigned int
880 PrintPS::image(Inkscape::Extension::Print *mod, guchar *px, unsigned int w, unsigned int h, unsigned int rs,
881 NRMatrix const *transform, SPStyle const *style)
882 {
883 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
884 if (_bitmap) return 0;
886 return print_image(_stream, px, w, h, rs, transform);
887 }
889 /* PSFontName is now useless (cf. text() method code) */
890 char const *
891 PrintPS::PSFontName(SPStyle const *style)
892 {
893 font_instance *tf = (font_factory::Default())->Face(style->text->font_family.value, font_style_to_pos(*style));
895 char const *n;
896 char name_buf[256];
898 // PS does not like spaces in fontnames, replace them with the usual dashes.
900 if (tf) {
901 tf->PSName(name_buf, sizeof(name_buf));
902 n = g_strdelimit(name_buf, " ", '-');
903 tf->Unref();
904 } else {
905 // 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
906 bool i = (style->font_style.value == SP_CSS_FONT_STYLE_ITALIC);
907 bool o = (style->font_style.value == SP_CSS_FONT_STYLE_OBLIQUE);
908 bool b = (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) ||
909 (style->font_weight.value >= SP_CSS_FONT_WEIGHT_500 && style->font_weight.value <= SP_CSS_FONT_WEIGHT_900);
911 n = g_strdup_printf("%s%s%s%s",
912 g_strdelimit(style->text->font_family.value, " ", '-'),
913 (b || i || o) ? "-" : "",
914 (b) ? "Bold" : "",
915 (i) ? "Italic" : ((o) ? "Oblique" : "") );
916 }
918 return g_strdup(n);
919 }
921 //LSB = Least Significant Byte
922 //converts 4-byte array to "LSB first" to "LSB last"
923 /**
924 * (Used by PrintPS::embed_t1 (from libgnomeprint/gnome-font-face.c),
925 * to get the length of data segment (bytes 3-6 in IBM PC (PostScript) font file format.
926 * Reference: Adobe technical note 5040, "Supporting Downloadable PostScript
927 * Language Fonts", page 9)
928 */
930 #define INT32_LSB_2_5(q) ((q)[2] + ((q)[3] << 8) + ((q)[4] << 16) + ((q)[5] << 24))
932 /**
933 * \brief For "Type 1" font only, print font data in output stream, to embed font data in PS output.
934 * \param os Stream of output.
935 * \param font Font whose data to embed.
936 * \return FALSE if font embedding canceled (due to error or not supported font type), TRUE otherwise
937 * TODO: enable font embedding for True Type
938 */
939 //adapted more/less from libgnomeprint/gnome_font_face_ps_embed_t1()
940 bool
941 PrintPS::embed_t1 (SVGOStringStream &os, font_instance* font)
942 {
943 //check font type
944 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
945 const FT_String* font_type = FT_Get_X11_Font_Format(font_face);
946 g_return_val_if_fail (_fontTypesMap[font_type] == FONT_TYPE1, false);
947 //get font filename, stream to font file and size
948 FT_Stream font_stream = font_face->stream;
949 const char* font_filename = (char*) font_stream->pathname.pointer;
950 unsigned long font_stream_size = font_stream->size;
951 //first detect if font file is in IBM PC format
952 /**
953 * if first byte is 0x80, font file is pfb, do the same as a pfb to pfa converter
954 * Reference: Adobe technical note 5040, "Supporting Downloadable PostScript
955 * Language Fonts", page 9
956 * else: include all the ASCII data in the font pfa file
957 **/
958 char* buf = new char[7];
959 unsigned char* buffer = new unsigned char[7];//for the 6 header bytes (data segment length is unknown at this point) and final '\0'
960 std::string ascii_data;//for data segment "type 1" in IBM PC Format
961 //read the 6 header bytes
962 //for debug: g_warning("Reading from font file %s...", font_filename);
963 font_stream->close(font_stream);
964 ifstream font_file (font_filename, ios::in|ios::binary);
965 if (!font_file.is_open()) {
966 g_warning ("file %s: line %d: Cannot open font file %s", __FILE__, __LINE__, font_filename);
967 return false;
968 }
969 font_file.read(buf, 6);
970 buffer = (unsigned char*) buf;
972 //If font file is pfb, do the same as pfb to pfa converter
973 //check byte 1
974 if (buffer[0] == 0x80) {
975 const char hextab[17] = "0123456789abcdef";
976 unsigned long offset = 0;
978 while (offset < font_stream_size) {
979 gint length, i;
980 if (buffer[0] != 0x80) {
981 g_warning ("file %s: line %d: Corrupt %s", __FILE__, __LINE__, font_filename);
982 //TODO: print some default font data anyway like libgnomeprint/gnome_font_face_ps_embed_empty
983 return false;
984 }
985 switch (buffer[1]) {
986 case 1:
987 //get data segment length from bytes 3-6
988 //(Note: byte 1 is first byte in comments to match Adobe technical note 5040, but index 0 in code)
989 length = INT32_LSB_2_5 (buffer);
990 offset += 6;
991 //resize the buffer to fit the data segment length
992 delete [] buf;
993 buf = new char[length + 1];
994 buffer = new unsigned char[length + 1];
995 //read and print all the data segment length
996 font_file.read(buf, length);
997 buffer = (unsigned char*) buf;
998 /**
999 * Assigning a part from the buffer of length "length" ensures
1000 * that no incorrect extra character will be printed and make the PS output invalid
1001 * That was the case with the code:
1002 * os << buffer;
1003 * (A substring method could have been used as well.)
1004 */
1005 ascii_data.assign(buf, 0, length);
1006 os << ascii_data;
1007 offset += length;
1008 //read next 6 header bytes
1009 font_file.read(buf, 6);
1010 break;
1011 case 2:
1012 length = INT32_LSB_2_5 (buffer);
1013 offset += 6;
1014 //resize the buffer to fit the data segment length
1015 delete [] buf;
1016 buf = new char[length + 1];
1017 buffer = new unsigned char[length + 1];
1018 //read and print all the data segment length
1019 font_file.read(buf, length);
1020 buffer = (unsigned char*) buf;
1021 for (i = 0; i < length; i++) {
1022 os << hextab[buffer[i] >> 4];
1023 os << hextab[buffer[i] & 15];
1024 offset += 1;
1025 if ((i & 31) == 31 || i == length - 1)
1026 os << "\n";
1027 }
1028 //read next 6 header bytes
1029 font_file.read(buf, 6);
1030 break;
1031 case 3:
1032 /* Finished */
1033 os << "\n";
1034 offset = font_stream_size;
1035 break;
1036 default:
1037 os << "%%%ERROR: Font file corrupted at byte " << offset << "\n";
1038 //TODO: print some default font data anyway like libgnomeprint/gnome_font_face_ps_embed_empty
1039 return false;
1040 }
1041 }
1042 }
1043 //else: font file is pfa, include all directly
1044 else {
1045 //font is not in IBM PC format, all the file content can be directly printed
1046 //resize buffer
1047 delete [] buf;
1048 buf = new char[font_stream_size + 1];
1049 delete [] buffer;
1050 font_file.seekg (0, ios::beg);
1051 font_file.read(buf, font_stream_size);
1052 /**
1053 * Assigning a part from the buffer of length "length" ensures
1054 * that no incorrect extra character will be printed and make the PS output invalid
1055 * That was the case with the code:
1056 * os << buffer;
1057 * (A substring method could have been used as well.)
1058 */
1059 ascii_data.assign(buf, 0, font_stream_size);
1060 os << ascii_data;
1061 }
1062 font_file.close();
1063 delete [] buf;
1064 buf = NULL;
1065 buffer = NULL;// Clear buffer to prevent using invalid memory reference.
1067 char font_psname[256];
1068 font->PSName(font_psname, sizeof(font_psname));
1069 FT_Long font_num_glyphs = font_face->num_glyphs;
1070 if (font_num_glyphs < 256) {
1071 gint glyph;
1072 /* 8-bit vector */
1073 os << "(" << font_psname << ") cvn findfont dup length dict begin\n";
1074 os << "{1 index /FID ne {def} {pop pop} ifelse} forall\n";
1075 os << "/Encoding [\n";
1076 for (glyph = 0; glyph < 256; glyph++) {
1077 guint g;
1078 gchar c[256];
1079 FT_Error status;
1080 g = (glyph < font_num_glyphs) ? glyph : 0;
1081 status = FT_Get_Glyph_Name (font_face, g, c, 256);
1083 if (status != FT_Err_Ok) {
1084 g_warning ("file %s: line %d: Glyph %d has no name in %s", __FILE__, __LINE__, g, font_filename);
1085 g_snprintf (c, 256, ".notdef");
1086 }
1088 os << "/" << c << ( ((glyph & 0xf) == 0xf)?"\n":" " );
1089 }
1090 os << "] def currentdict end\n";
1091 //TODO: manage several font instances for same ps name like in libgnomeprint/gnome_print_ps2_set_font_real()
1092 //gf_pso_sprintf (pso, "(%s) cvn exch definefont pop\n", pso->encodedname);
1093 os << "(" << font_psname << ") cvn exch definefont pop\n";
1094 } else {
1095 gint nfonts, i, j;
1096 /* 16-bit vector */
1097 nfonts = (font_num_glyphs + 255) >> 8;
1099 os << "32 dict begin\n";
1100 /* Common entries */
1101 os << "/FontType 0 def\n";
1102 os << "/FontMatrix [1 0 0 1 0 0] def\n";
1103 os << "/FontName (" << font_psname << "-Glyph-Composite) cvn def\n";
1104 os << "/LanguageLevel 2 def\n";
1106 /* Type 0 entries */
1107 os << "/FMapType 2 def\n";
1109 /* Bitch 'o' bitches */
1110 os << "/FDepVector [\n";
1112 for (i = 0; i < nfonts; i++) {
1113 os << "(" << font_psname << ") cvn findfont dup length dict begin\n";
1114 os << "{1 index /FID ne {def} {pop pop} ifelse} forall\n";
1115 os << "/Encoding [\n";
1116 for (j = 0; j < 256; j++) {
1117 gint glyph;
1118 gchar c[256];
1119 FT_Error status;
1120 glyph = 256 * i + j;
1121 if (glyph >= font_num_glyphs)
1122 glyph = 0;
1123 status = FT_Get_Glyph_Name (font_face, glyph, c, 256);
1124 if (status != FT_Err_Ok) {
1125 g_warning ("file %s: line %d: Glyph %d has no name in %s", __FILE__, __LINE__, glyph, font_filename);
1126 g_snprintf (c, 256, ".notdef");
1127 }
1128 os << "/" << c << ( ((j & 0xf) == 0xf)?"\n":" " );
1129 }
1130 os << "] def\n";
1131 os << "currentdict end (" << font_psname << "-Glyph-Page-";
1132 os << std::dec << i;
1133 os << ") cvn exch definefont\n";
1134 }
1135 os << "] def\n";
1136 os << "/Encoding [\n";
1137 for (i = 0; i < 256; i++) {
1138 gint fn;
1139 fn = (i < nfonts) ? i : 0;
1140 os << std::dec << fn;
1141 os << ( ((i & 0xf) == 0xf) ? "\n" : " " );
1142 }
1143 os << "] def\n";
1144 os << "currentdict end\n";
1145 //TODO: manage several font instances for same ps name like in libgnomeprint/gnome_print_ps2_set_font_real()
1146 //gf_pso_sprintf (pso, "(%s) cvn exch definefont pop\n", pso->encodedname);
1147 os << "(" << font_psname << ") cvn exch definefont pop\n";
1148 }
1149 //font embedding completed
1150 return true;
1151 }
1155 /**
1156 * \brief Print font data in output stream, to embed font data in PS output.
1157 * \param os Stream of output.
1158 * \param font Font whose data to embed.
1159 * \return FALSE if font embedding canceled (due to error or not supported font type), TRUE otherwise
1160 */
1161 //adapted from libgnomeprint/gnome_font_face_ps_embed()
1162 bool PrintPS::embed_font(SVGOStringStream &os, font_instance* font)
1163 {
1164 //Hinted at by a comment in libgnomeprint/fcpattern_to_gp_font_entry()
1165 //Determining the font type in the "Pango way"
1166 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
1167 const FT_String* font_type = FT_Get_X11_Font_Format(font_face);
1169 /**
1170 * Possible values of "font_type": Type 1, TrueType, etc.
1171 * Embedding available only for Type 1 fonts so far.
1172 */
1173 //TODO: provide support for other font types (TrueType is a priority)
1174 switch(_fontTypesMap[font_type])
1175 {
1176 case FONT_TYPE1:
1177 return embed_t1 (os, font);
1178 //TODO: implement TT font embedding
1179 /*case FONT_TRUETYPE:
1180 embed_tt (os, font);
1181 break;*/
1182 default:
1183 g_warning("Unknown (not supported) font type for embedding: %s", font_type);
1184 //TODO: embed something like in libgnomeprint/gnome_font_face_ps_embed_empty();
1185 return false;
1186 }
1187 }
1190 /**
1191 * \brief Converts UTF-8 string to sequence of glyph numbers for PostScript string (cf. "show" commands.).
1192 * \param os Stream of output.
1193 * \param font Font used for unicode->glyph mapping.
1194 * \param unistring UTF-8 encoded string to convert.
1195 */
1196 void PrintPS::print_glyphlist(SVGOStringStream &os, font_instance* font, Glib::ustring unistring)
1197 {
1198 //iterate through unicode chars in unistring
1199 Glib::ustring::iterator unistring_iter;
1200 gunichar unichar;
1201 gint glyph_index, glyph_page;
1203 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
1204 FT_Long font_num_glyphs = font_face->num_glyphs;
1205 //whether font has more than one glyph pages (16-bit encoding)
1206 bool two_bytes_encoded = (font_num_glyphs > 255);
1208 for (unistring_iter = unistring.begin(); unistring_iter!=unistring.end(); unistring_iter++)
1209 {
1210 //get unicode char
1211 unichar = *unistring_iter;
1212 //get matching glyph index in current font for unicode char
1213 //default glyph index is 0 for undefined font character (glyph unavailable)
1214 //TODO: if glyph unavailable for current font, use a default font among the most Unicode-compliant - e.g. Bitstream Cyberbit - I guess
1215 glyph_index = font->MapUnicodeChar(unichar);
1216 //if more than one glyph pages for current font (16-bit encoding),
1217 if(two_bytes_encoded)
1218 {
1219 //add glyph page before glyph index.
1220 glyph_page = (glyph_index >> 8) & 0xff;
1221 os << "\\";
1222 //convert in octal code before printing
1223 os << std::oct << glyph_page;
1224 }
1225 //(If one page - 8-bit encoding -, nothing to add.)
1226 //TODO: explain the following line inspired from libgnomeprint/gnome_print_ps2_glyphlist()
1227 glyph_index = glyph_index & 0xff;
1228 //TODO: mark glyph as used for current font, if Inkscape has to embed minimal font data in PS
1229 os << "\\";
1230 //convert in octal code before printing
1231 os << std::oct << glyph_index;
1232 }
1233 }
1235 unsigned int
1236 PrintPS::text(Inkscape::Extension::Print *mod, char const *text, NR::Point p,
1237 SPStyle const *const style)
1238 {
1239 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
1240 if (_bitmap) return 0;
1242 //check whether fonts have to be embedded in the PS output
1243 //if not, use the former way of Inkscape to print text
1244 gboolean font_embedded = mod->fontEmbedded();
1246 Inkscape::SVGOStringStream os;
1247 //find font
1248 /**
1249 * A font_instance object is necessary for the next steps,
1250 * that's why using PSFontName() method just to get the PS fontname
1251 * is not enough and not appropriate
1252 */
1253 font_instance *tf = (font_factory::Default())->Face(style->text->font_family.value, font_style_to_pos(*style));
1254 const gchar *fn = NULL;
1255 char name_buf[256];
1257 //check whether font was found
1258 /**
1259 * This check is not strictly reliable
1260 * since Inkscape returns a default font if font not found.
1261 * This is just to be consistent with the method PSFontName().
1262 */
1263 if (tf) {
1264 //get font PS name
1265 tf->PSName(name_buf, sizeof(name_buf));
1266 fn = name_buf;
1267 } else {
1268 // this system does not have this font, so cancel font embedding...
1269 font_embedded = FALSE;
1270 //this case seems to never happen since Inkscape uses a default font instead (like BitstreamVeraSans on Windows)
1271 g_warning("Font %s not found.", fn);
1272 //...and just use the name from SVG in the hope that PS interpreter will make sense of it
1273 bool i = (style->font_style.value == SP_CSS_FONT_STYLE_ITALIC);
1274 bool o = (style->font_style.value == SP_CSS_FONT_STYLE_OBLIQUE);
1275 bool b = (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) ||
1276 (style->font_weight.value >= SP_CSS_FONT_WEIGHT_500 && style->font_weight.value <= SP_CSS_FONT_WEIGHT_900);
1278 fn = g_strdup_printf("%s%s%s%s",
1279 g_strdelimit(style->text->font_family.value, " ", '-'),
1280 (b || i || o) ? "-" : "",
1281 (b) ? "Bold" : "",
1282 (i) ? "Italic" : ((o) ? "Oblique" : "") );
1283 }
1285 /**
1286 * If font embedding is requested, tempt to embed the font the first time it is used, once and for all.
1287 * There is no selection of the glyph descriptions to embed, based on the characters used effectively in the document.
1288 * (TODO?)
1289 * Else, back to the former way of printing.
1290 */
1291 gpointer is_embedded;
1292 //if not first time the font is used and if font embedding requested, check whether the font has been embedded (successfully the first time).
1293 if(g_tree_lookup_extended(_fonts, fn, NULL, &is_embedded)) font_embedded = font_embedded && (strcmp((char *)is_embedded, "TRUE") == 0);
1294 else
1295 {
1296 //first time the font is used
1297 if(font_embedded)
1298 {
1299 //embed font in PS output
1300 //adapted from libgnomeprint/gnome_print_ps2_close()
1301 os << "%%BeginResource: font " << fn << "\n";
1302 font_embedded = embed_font(os, tf);
1303 os << "%%EndResource: font " << fn << "\n";
1304 if(!font_embedded) g_warning("Font embedding canceled for font: %s", fn);
1305 else fprintf(_begin_stream, "%s", os.str().c_str());
1306 //empty os before resume printing to the script stream
1307 std::string clrstr = "";
1308 os.str(clrstr);
1310 }
1311 //add to the list
1312 g_tree_insert(_fonts, g_strdup(fn), g_strdup((font_embedded)?"TRUE":"FALSE"));
1313 }
1315 Glib::ustring s;
1316 // Escape chars
1317 Inkscape::SVGOStringStream escaped_text;
1318 //if font embedding, all characters will be converted to glyph indices (cf. PrintPS::print_glyphlist()),
1319 //so no need to escape characters
1320 //else back to the old way, i.e. escape chars: '\',')','(' and UTF-8 ones
1321 if(font_embedded) s = text;
1322 else {
1323 escaped_text << std::oct;
1324 for (gchar const *p_text = text ; *p_text ; p_text = g_utf8_next_char(p_text)) {
1325 gunichar const c = g_utf8_get_char(p_text);
1326 if (c == '\\' || c == ')' || c == '(')
1327 escaped_text << '\\' << static_cast<char>(c);
1328 else if (c >= 0x80)
1329 escaped_text << '\\' << c;
1330 else
1331 escaped_text << static_cast<char>(c);
1332 }
1333 }
1335 os << "gsave\n";
1337 // set font
1338 if(font_embedded) os << "/" << fn << " findfont\n";
1339 else {
1340 if (_latin1_encoded_fonts.find(fn) == _latin1_encoded_fonts.end()) {
1341 if (!_newlatin1font_proc_defined) {
1342 // input: newfontname, existingfontname
1343 // output: new font object, also defined to newfontname
1344 os << "/newlatin1font " // name of the proc
1345 "{findfont dup length dict copy " // load the font and create a copy of it
1346 "dup /Encoding ISOLatin1Encoding put " // change the encoding in the copy
1347 "definefont} def\n"; // create the new font and leave it on the stack, define the proc
1348 _newlatin1font_proc_defined = true;
1349 }
1350 if(strchr(fn, ' ') == NULL)
1351 os << "/" << fn << "-ISOLatin1 /" << fn << " newlatin1font\n";
1352 else
1353 os << "(/" << fn << "-ISOLatin1) (/" << fn << ") newlatin1font\n";
1354 _latin1_encoded_fonts.insert(fn);
1355 } else
1356 if(strchr(fn, ' ') == NULL)
1357 os << "/" << fn << "-ISOLatin1 findfont\n";
1358 else
1359 os << "(/" << fn << "-ISOLatin1) findfont\n";
1360 }
1361 os << style->font_size.computed << " scalefont\n";
1362 os << "setfont\n";
1363 //The commented line beneath causes Inkscape to crash under Linux but not under Windows
1364 //g_free((void*) fn);
1366 if ( style->fill.type == SP_PAINT_TYPE_COLOR
1367 || ( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
1368 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) )
1369 {
1370 // set fill style
1371 print_fill_style(os, style, NULL);
1372 // FIXME: we don't know the pbox of text, so have to pass NULL. This means gradients with
1373 // bbox units won't work with text. However userspace gradients don't work with text either
1374 // (text is black) for some reason.
1376 os << "newpath\n";
1377 os << p[NR::X] << " " << p[NR::Y] << " moveto\n";
1378 os << "(";
1379 if(font_embedded) print_glyphlist(os, tf, s);
1380 else os << escaped_text.str();
1381 os << ") show\n";
1382 }
1384 if (style->stroke.type == SP_PAINT_TYPE_COLOR) {
1386 // set stroke style
1387 print_stroke_style(os, style);
1389 // paint stroke
1390 os << "newpath\n";
1391 os << p[NR::X] << " " << p[NR::Y] << " moveto\n";
1392 os << "(";
1393 if(font_embedded) print_glyphlist(os, tf, s);
1394 else os << escaped_text.str();
1395 os << ") false charpath stroke\n";
1396 }
1398 if(tf) tf->Unref();
1400 os << "grestore\n";
1402 fprintf(_stream, "%s", os.str().c_str());
1404 return 0;
1405 }
1409 /* PostScript helpers */
1411 void
1412 PrintPS::print_bpath(SVGOStringStream &os, NArtBpath const *bp)
1413 {
1414 os << "newpath\n";
1415 bool closed = false;
1416 while (bp->code != NR_END) {
1417 switch (bp->code) {
1418 case NR_MOVETO:
1419 if (closed) {
1420 os << "closepath\n";
1421 }
1422 closed = true;
1423 os << bp->x3 << " " << bp->y3 << " moveto\n";
1424 break;
1425 case NR_MOVETO_OPEN:
1426 if (closed) {
1427 os << "closepath\n";
1428 }
1429 closed = false;
1430 os << bp->x3 << " " << bp->y3 << " moveto\n";
1431 break;
1432 case NR_LINETO:
1433 os << bp->x3 << " " << bp->y3 << " lineto\n";
1434 break;
1435 case NR_CURVETO:
1436 os << bp->x1 << " " << bp->y1 << " "
1437 << bp->x2 << " " << bp->y2 << " "
1438 << bp->x3 << " " << bp->y3 << " curveto\n";
1439 break;
1440 default:
1441 break;
1442 }
1443 bp += 1;
1444 }
1445 if (closed) {
1446 os << "closepath\n";
1447 }
1448 }
1450 /* The following code is licensed under GNU GPL.
1451 ** The packbits, ascii85 and imaging printing code
1452 ** is from the gimp's postscript.c.
1453 */
1455 /**
1456 * \param nin Number of bytes of source data.
1457 * \param src Source data.
1458 * \param nout Number of output bytes.
1459 * \param dst Buffer for output.
1460 */
1461 void
1462 PrintPS::compress_packbits(int nin,
1463 guchar *src,
1464 int *nout,
1465 guchar *dst)
1467 {
1468 register guchar c;
1469 int nrepeat, nliteral;
1470 guchar *run_start;
1471 guchar *start_dst = dst;
1472 guchar *last_literal = NULL;
1474 for (;;) {
1475 if (nin <= 0) break;
1477 run_start = src;
1478 c = *run_start;
1480 /* Search repeat bytes */
1481 if ((nin > 1) && (c == src[1])) {
1482 nrepeat = 1;
1483 nin -= 2;
1484 src += 2;
1485 while ((nin > 0) && (c == *src)) {
1486 nrepeat++;
1487 src++;
1488 nin--;
1489 if (nrepeat == 127) break; /* Maximum repeat */
1490 }
1492 /* Add two-byte repeat to last literal run ? */
1493 if ( (nrepeat == 1)
1494 && (last_literal != NULL) && (((*last_literal)+1)+2 <= 128) )
1495 {
1496 *last_literal += 2;
1497 *(dst++) = c;
1498 *(dst++) = c;
1499 continue;
1500 }
1502 /* Add repeat run */
1503 *(dst++) = (guchar)((-nrepeat) & 0xff);
1504 *(dst++) = c;
1505 last_literal = NULL;
1506 continue;
1507 }
1508 /* Search literal bytes */
1509 nliteral = 1;
1510 nin--;
1511 src++;
1513 for (;;) {
1514 if (nin <= 0) break;
1516 if ((nin >= 2) && (src[0] == src[1])) /* A two byte repeat ? */
1517 break;
1519 nliteral++;
1520 nin--;
1521 src++;
1522 if (nliteral == 128) break; /* Maximum literal run */
1523 }
1525 /* Could be added to last literal run ? */
1526 if ((last_literal != NULL) && (((*last_literal)+1)+nliteral <= 128)) {
1527 *last_literal += nliteral;
1528 } else {
1529 last_literal = dst;
1530 *(dst++) = (guchar)(nliteral-1);
1531 }
1532 while (nliteral-- > 0) *(dst++) = *(run_start++);
1533 }
1534 *nout = dst - start_dst;
1535 }
1537 void
1538 PrintPS::ascii85_init(void)
1539 {
1540 ascii85_len = 0;
1541 ascii85_linewidth = 0;
1542 }
1544 void
1545 PrintPS::ascii85_flush(SVGOStringStream &os)
1546 {
1547 char c[5];
1548 bool const zero_case = (ascii85_buf == 0);
1549 static int const max_linewidth = 75;
1551 for (int i = 4; i >= 0; i--) {
1552 c[i] = (ascii85_buf % 85) + '!';
1553 ascii85_buf /= 85;
1554 }
1555 /* check for special case: "!!!!!" becomes "z", but only if not
1556 * at end of data. */
1557 if (zero_case && (ascii85_len == 4)) {
1558 if (ascii85_linewidth >= max_linewidth) {
1559 os << '\n';
1560 ascii85_linewidth = 0;
1561 }
1562 os << 'z';
1563 ascii85_linewidth++;
1564 } else {
1565 for (int i = 0; i < ascii85_len+1; i++) {
1566 if ((ascii85_linewidth >= max_linewidth) && (c[i] != '%')) {
1567 os << '\n';
1568 ascii85_linewidth = 0;
1569 }
1570 os << c[i];
1571 ascii85_linewidth++;
1572 }
1573 }
1575 ascii85_len = 0;
1576 ascii85_buf = 0;
1577 }
1579 inline void
1580 PrintPS::ascii85_out(guchar byte, SVGOStringStream &os)
1581 {
1582 if (ascii85_len == 4)
1583 ascii85_flush(os);
1585 ascii85_buf <<= 8;
1586 ascii85_buf |= byte;
1587 ascii85_len++;
1588 }
1590 void
1591 PrintPS::ascii85_nout(int n, guchar *uptr, SVGOStringStream &os)
1592 {
1593 while (n-- > 0) {
1594 ascii85_out(*uptr, os);
1595 uptr++;
1596 }
1597 }
1599 void
1600 PrintPS::ascii85_done(SVGOStringStream &os)
1601 {
1602 if (ascii85_len) {
1603 /* zero any unfilled buffer portion, then flush */
1604 ascii85_buf <<= (8 * (4-ascii85_len));
1605 ascii85_flush(os);
1606 }
1608 os << "~>\n";
1609 }
1611 unsigned int
1612 PrintPS::print_image(FILE *ofp, guchar *px, unsigned int width, unsigned int height, unsigned int rs,
1613 NRMatrix const *transform)
1614 {
1615 Inkscape::SVGOStringStream os;
1617 os << "gsave\n";
1619 os << "[" << transform->c[0] << " "
1620 << transform->c[1] << " "
1621 << transform->c[2] << " "
1622 << transform->c[3] << " "
1623 << transform->c[4] << " "
1624 << transform->c[5] << "] concat\n";
1626 /* Write read image procedure */
1627 os << "<<\n";
1628 os << " /ImageType 3\n";
1629 os << " /InterleaveType 1\n";
1631 os << " /MaskDict\n";
1632 os << " <<\n";
1633 os << " /ImageType 1\n";
1634 os << " /Width " << width << "\n";
1635 os << " /Height " << height << "\n";
1636 os << " /ImageMatrix "
1637 << "[" << width << " "
1638 << 0 << " "
1639 << 0 << " "
1640 << -((long) height) << " "
1641 << 0 << " "
1642 << height << "]\n";
1643 os << " /BitsPerComponent 8\n";
1644 os << " /Decode [1 0]\n";
1645 os << " >>\n";
1647 os << " /DataDict\n";
1648 os << " <<\n";
1649 os << " /ImageType 1\n";
1650 os << " /Width " << width << "\n";
1651 os << " /Height " << height << "\n";
1652 os << " /ImageMatrix "
1653 << "[" << width << " "
1654 << 0 << " "
1655 << 0 << " "
1656 << -((long )height) << " "
1657 << 0 << " "
1658 << height << "]\n";
1659 os << " /DataSource currentfile /ASCII85Decode filter\n";
1660 os << " /BitsPerComponent 8\n";
1661 os << " /Decode [0 1 0 1 0 1]\n";
1662 os << " >>\n";
1664 os << ">>\n";
1666 /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
1667 guchar *const packb = (guchar *)g_malloc((4*width * 105)/100+2);
1668 guchar *const plane = (guchar *)g_malloc(4*width);
1670 os << "image\n";
1672 ascii85_init();
1674 for (unsigned i = 0; i < height; i++) {
1675 guchar const *const src = px + i * rs;
1677 guchar const *src_ptr = src;
1678 guchar *plane_ptr = plane;
1679 for (unsigned j = 0; j < width; j++) {
1680 *(plane_ptr++) = *(src_ptr+3);
1681 *(plane_ptr++) = *(src_ptr+0);
1682 *(plane_ptr++) = *(src_ptr+1);
1683 *(plane_ptr++) = *(src_ptr+2);
1684 src_ptr += 4;
1685 }
1687 ascii85_nout(4*width, plane, os);
1688 }
1689 ascii85_done(os);
1691 g_free(packb);
1692 g_free(plane);
1694 os << "grestore\n";
1696 fprintf(ofp, "%s", os.str().c_str());
1698 return 0;
1699 }
1701 bool
1702 PrintPS::textToPath(Inkscape::Extension::Print * ext)
1703 {
1704 return ext->get_param_bool("textToPath");
1705 }
1707 /**
1708 * \brief Get "fontEmbedded" param
1709 * \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
1710 * \retval FALSE No font embedding
1711 *
1712 * Only available for Adobe Type 1 fonts in EPS output till now
1713 */
1714 bool
1715 PrintPS::fontEmbedded(Inkscape::Extension::Print * ext)
1716 {
1717 return ext->get_param_bool("fontEmbedded");
1718 }
1720 #include "clear-n_.h"
1722 void
1723 PrintPS::init(void)
1724 {
1725 /* SVG in */
1726 (void) Inkscape::Extension::build_from_mem(
1727 "<inkscape-extension>\n"
1728 "<name>" N_("Postscript Print") "</name>\n"
1729 "<id>" SP_MODULE_KEY_PRINT_PS "</id>\n"
1730 "<param name=\"bitmap\" type=\"boolean\">FALSE</param>\n"
1731 "<param name=\"resolution\" type=\"string\">72</param>\n"
1732 "<param name=\"destination\" type=\"string\">| lp</param>\n"
1733 "<param name=\"pageBoundingBox\" type=\"boolean\">TRUE</param>\n"
1734 "<param name=\"textToPath\" type=\"boolean\">TRUE</param>\n"
1735 "<param name=\"fontEmbedded\" type=\"boolean\">FALSE</param>\n"
1736 "<print/>\n"
1737 "</inkscape-extension>", new PrintPS());
1738 }
1741 } /* namespace Internal */
1742 } /* namespace Extension */
1743 } /* namespace Inkscape */
1745 /* End of GNU GPL code */
1748 /*
1749 Local Variables:
1750 mode:c++
1751 c-file-style:"stroustrup"
1752 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1753 indent-tabs-mode:nil
1754 fill-column:99
1755 End:
1756 */
1757 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :