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;
116 /* Create dialog */
117 GtkTooltips *tt = gtk_tooltips_new();
118 g_object_ref((GObject *) tt);
119 gtk_object_sink((GtkObject *) tt);
121 GtkWidget *dlg = gtk_dialog_new_with_buttons(_("Print Destination"),
122 // SP_DT_WIDGET(SP_ACTIVE_DESKTOP)->window,
123 NULL,
124 (GtkDialogFlags) (GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR | GTK_DIALOG_DESTROY_WITH_PARENT),
125 GTK_STOCK_CANCEL,
126 GTK_RESPONSE_CANCEL,
127 GTK_STOCK_PRINT,
128 GTK_RESPONSE_OK,
129 NULL);
131 gtk_dialog_set_default_response(GTK_DIALOG(dlg), GTK_RESPONSE_OK);
133 GtkWidget *vbox = GTK_DIALOG(dlg)->vbox;
134 gtk_container_set_border_width(GTK_CONTAINER(vbox), 4);
135 /* Print properties frame */
136 GtkWidget *f = gtk_frame_new(_("Print properties"));
137 gtk_box_pack_start(GTK_BOX(vbox), f, FALSE, FALSE, 4);
138 GtkWidget *vb = gtk_vbox_new(FALSE, 4);
139 gtk_container_add(GTK_CONTAINER(f), vb);
140 gtk_container_set_border_width(GTK_CONTAINER(vb), 4);
141 /* Print type */
142 bool const p2bm = mod->get_param_bool("bitmap");
143 GtkWidget *rb = gtk_radio_button_new_with_label(NULL, _("Print using PostScript operators"));
144 gtk_tooltips_set_tip((GtkTooltips *) tt, rb,
145 _("Use PostScript vector operators. The resulting image is usually smaller "
146 "in file size and can be arbitrarily scaled, but alpha transparency "
147 "and patterns will be lost."), NULL);
148 if (!p2bm) gtk_toggle_button_set_active((GtkToggleButton *) rb, TRUE);
149 gtk_box_pack_start(GTK_BOX(vb), rb, FALSE, FALSE, 0);
150 rb = gtk_radio_button_new_with_label(gtk_radio_button_get_group((GtkRadioButton *) rb), _("Print as bitmap"));
151 gtk_tooltips_set_tip((GtkTooltips *) tt, rb,
152 _("Print everything as bitmap. The resulting image is usually larger "
153 "in file size and cannot be arbitrarily scaled without quality loss, "
154 "but all objects will be rendered exactly as displayed."), NULL);
155 if (p2bm) gtk_toggle_button_set_active((GtkToggleButton *) rb, TRUE);
156 gtk_box_pack_start(GTK_BOX(vb), rb, FALSE, FALSE, 0);
157 /* Resolution */
158 GtkWidget *hb = gtk_hbox_new(FALSE, 4);
159 gtk_box_pack_start(GTK_BOX(vb), hb, FALSE, FALSE, 0);
160 GtkWidget *combo = gtk_combo_new();
161 gtk_combo_set_value_in_list(GTK_COMBO(combo), FALSE, FALSE);
162 gtk_combo_set_use_arrows(GTK_COMBO(combo), TRUE);
163 gtk_combo_set_use_arrows_always(GTK_COMBO(combo), TRUE);
164 gtk_widget_set_size_request(combo, 64, -1);
165 gtk_tooltips_set_tip((GtkTooltips *) tt, GTK_COMBO(combo)->entry,
166 _("Preferred resolution (dots per inch) of bitmap"), NULL);
167 /* Setup strings */
168 GList *sl = NULL;
169 for (unsigned i = 0; pdr[i] != NULL; i++) {
170 sl = g_list_prepend(sl, (gpointer) pdr[i]);
171 }
172 sl = g_list_reverse(sl);
173 gtk_combo_set_popdown_strings(GTK_COMBO(combo), sl);
174 g_list_free(sl);
175 if (1) {
176 gchar const *val = mod->get_param_string("resolution");
177 gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(combo)->entry), val);
178 }
179 gtk_box_pack_end(GTK_BOX(hb), combo, FALSE, FALSE, 0);
180 GtkWidget *l = gtk_label_new(_("Resolution:"));
181 gtk_box_pack_end(GTK_BOX(hb), l, FALSE, FALSE, 0);
183 /* Print destination frame */
184 f = gtk_frame_new(_("Print destination"));
185 gtk_box_pack_start(GTK_BOX(vbox), f, FALSE, FALSE, 4);
186 vb = gtk_vbox_new(FALSE, 4);
187 gtk_container_add(GTK_CONTAINER(f), vb);
188 gtk_container_set_border_width(GTK_CONTAINER(vb), 4);
190 l = gtk_label_new(_("Printer name (as given by lpstat -p);\n"
191 "leave empty to use the system default printer.\n"
192 "Use '> filename' to print to file.\n"
193 "Use '| prog arg...' to pipe to a program."));
194 gtk_box_pack_start(GTK_BOX(vb), l, FALSE, FALSE, 0);
196 GtkWidget *e = gtk_entry_new();
197 if (1) {
198 gchar const *val = mod->get_param_string("destination");
199 gtk_entry_set_text(GTK_ENTRY(e), ( val != NULL
200 ? val
201 : "" ));
202 }
203 gtk_box_pack_start(GTK_BOX(vb), e, FALSE, FALSE, 0);
205 // pressing enter in the destination field is the same as clicking Print:
206 gtk_entry_set_activates_default(GTK_ENTRY(e), TRUE);
208 gtk_widget_show_all(vbox);
210 int const response = gtk_dialog_run(GTK_DIALOG(dlg));
212 g_object_unref((GObject *) tt);
214 if (response == GTK_RESPONSE_OK) {
215 gchar const *fn;
216 char const *sstr;
218 _bitmap = gtk_toggle_button_get_active((GtkToggleButton *) rb);
219 sstr = gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(combo)->entry));
220 _dpi = (unsigned int) MAX((int)(atof(sstr)), 1);
221 /* Arrgh, have to do something */
222 fn = gtk_entry_get_text(GTK_ENTRY(e));
223 /* skip leading whitespace, bug #1068483 */
224 while (fn && *fn==' ') { fn++; }
225 /* g_print("Printing to %s\n", fn); */
227 mod->set_param_bool("bitmap", _bitmap);
228 mod->set_param_string("resolution", (gchar *)sstr);
229 mod->set_param_string("destination", (gchar *)fn);
230 ret = TRUE;
231 }
233 gtk_widget_destroy(dlg);
235 return ret;
236 }
238 unsigned int
239 PrintPS::begin(Inkscape::Extension::Print *mod, SPDocument *doc)
240 {
241 gboolean epsexport = false;
244 _latin1_encoded_fonts.clear();
245 _newlatin1font_proc_defined = false;
247 FILE *osf = NULL;
248 FILE *osp = NULL;
249 FILE *osf_tmp = NULL;
251 gsize bytesRead = 0;
252 gsize bytesWritten = 0;
253 GError *error = NULL;
254 //check whether fonts have to be embedded in the (EPS only) output
255 bool font_embedded = mod->fontEmbedded();
256 gchar const *utf8_fn = mod->get_param_string("destination");
257 gchar *local_fn = g_filename_from_utf8( utf8_fn,
258 -1, &bytesRead, &bytesWritten, &error);
259 gchar const *fn = local_fn;
261 /* TODO: Replace the below fprintf's with something that does the right thing whether in
262 * gui or batch mode (e.g. --print=blah). Consider throwing an exception: currently one of
263 * the callers (sp_print_document_to_file, "ret = mod->begin(doc)") wrongly ignores the
264 * return code.
265 */
266 if (fn != NULL) {
267 if (*fn == '|') {
268 fn += 1;
269 while (isspace(*fn)) fn += 1;
270 #ifndef WIN32
271 osp = popen(fn, "w");
272 #else
273 osp = _popen(fn, "w");
274 #endif
275 if (!osp) {
276 fprintf(stderr, "inkscape: popen(%s): %s\n",
277 fn, strerror(errno));
278 return 0;
279 }
280 _stream = _begin_stream = osp;
281 } else if (*fn == '>') {
282 fn += 1;
283 epsexport = g_str_has_suffix(fn,".eps");
284 while (isspace(*fn)) fn += 1;
285 Inkscape::IO::dump_fopen_call(fn, "K");
286 osf = Inkscape::IO::fopen_utf8name(fn, "w+");
287 if (!osf) {
288 fprintf(stderr, "inkscape: fopen(%s): %s\n",
289 fn, strerror(errno));
290 return 0;
291 }
292 _begin_stream = osf;
293 /* if font embedding is requested for EPS export...
294 * TODO:could be extended to PS export if texttopath=FALSE possible
295 */
296 if(font_embedded && epsexport)
297 {
298 /**
299 * Create temporary file where to print the main "script" part of the EPS document.
300 * Use an extra stream (_begin_stream) to print the prolog and document setup sections.
301 * Thus, once all the (main) script part printed, all the fonts used are known and can be embedded
302 * just after the prolog section, in a Begin(End)Setup section (document setup),
303 * one Begin(End)Resource (DSC comment) section for each font embedded.
304 * Then, append the final script part from the temporary file (_stream in this case).
305 * Reference: Adobe Technical note 5001, "PostScript Document Struturing Conventions Specifications"
306 * page 19
307 */
308 osf_tmp = tmpfile();
309 if(!osf_tmp)
310 {
311 g_warning("Could not create a temporary file for font embedding. Font embedding canceled.");
312 mod->set_param_bool("fontEmbedded", false);
313 font_embedded = false;
314 _stream = osf;
315 } else _stream = osf_tmp;
316 } else _stream = osf;
317 } else {
318 /* put cwd stuff in here */
319 gchar *qn = ( *fn
320 ? g_strdup_printf("lpr -P %s", fn) /* FIXME: quote fn */
321 : g_strdup("lpr") );
322 #ifndef WIN32
323 osp = popen(qn, "w");
324 #else
325 osp = _popen(qn, "w");
326 #endif
327 if (!osp) {
328 fprintf(stderr, "inkscape: popen(%s): %s\n",
329 qn, strerror(errno));
330 return 0;
331 }
332 g_free(qn);
333 _stream = _begin_stream = osp;
334 }
335 }
337 g_free(local_fn);
339 if (_stream) {
340 /* fixme: this is kinda icky */
341 #if !defined(_WIN32) && !defined(__WIN32__)
342 (void) signal(SIGPIPE, SIG_IGN);
343 #endif
344 }
346 int const res = fprintf(_begin_stream, ( epsexport
347 ? "%%!PS-Adobe-3.0 EPSF-3.0\n"
348 : "%%!PS-Adobe-3.0\n" ));
349 /* flush this to test output stream as early as possible */
350 if (fflush(_begin_stream)) {
351 /*g_print("caught error in sp_module_print_plain_begin\n");*/
352 if (ferror(_begin_stream)) {
353 g_print("Error %d on output stream: %s\n", errno,
354 g_strerror(errno));
355 }
356 g_print("Printing failed\n");
357 /* fixme: should use pclose() for pipes */
358 fclose(_begin_stream);
359 _begin_stream = NULL;
360 fflush(stdout);
361 return 0;
362 }
363 //TODO: do this same test on _stream
365 // width and height in pt
366 _width = sp_document_width(doc) * PT_PER_PX;
367 _height = sp_document_height(doc) * PT_PER_PX;
369 NRRect d;
370 bool pageBoundingBox;
371 bool pageLandscape;
372 pageBoundingBox = mod->get_param_bool("pageBoundingBox");
373 // printf("Page Bounding Box: %s\n", pageBoundingBox ? "TRUE" : "FALSE");
374 if (pageBoundingBox) {
375 d.x0 = d.y0 = 0;
376 d.x1 = ceil(_width);
377 d.y1 = ceil(_height);
378 } else {
379 SPItem* doc_item = SP_ITEM(sp_document_root(doc));
380 sp_item_invoke_bbox(doc_item, &d, sp_item_i2r_affine(doc_item), TRUE);
381 // convert from px to pt
382 d.x0 *= PT_PER_PX;
383 d.x1 *= PT_PER_PX;
384 d.y0 *= PT_PER_PX;
385 d.y1 *= PT_PER_PX;
386 }
388 Inkscape::SVGOStringStream os;
389 if (res >= 0) {
391 os << "%%Creator: " << PACKAGE_STRING << "\n";
392 // This will become problematic if inkscape gains the
393 // ability to handle multi paged documents. If this is
394 // the case the %%Orientation: comments should be
395 // renamed to %%PageOrientation: and moved to the
396 // respective pages.
397 os << "%%Pages: 1\n";
399 // 2004 Dec 10, BFC:
400 // The point of the following code is (1) to do the thing that's expected by users
401 // who have done File>New>A4_landscape or ...letter_landscape (i.e., rotate
402 // the output), while (2) not messing up users who simply want their output wider
403 // than it is tall (e.g., small figures for inclusion in LaTeX).
404 // The original patch by WQ only had the w>h condition.
405 {
406 double w = (d.x1 - d.x0); // width and height of bounding box, in pt
407 double h = (d.y1 - d.y0);
408 pageLandscape = (
409 (w > 0. && h > 0.) // empty documents fail this sanity check, have w<0, h<0
410 && (w > h) // implies, but does not prove, the user wanted landscape
411 && (w > 600) // approximate maximum printable width of an A4
412 && (!epsexport) // eps should always be portrait
413 )
414 ? true : false;
415 }
417 if (pageLandscape) {
418 os << "%%Orientation: Landscape\n";
419 os << "%%BoundingBox: " << (int) (_height - d.y1) << " "
420 << (int) d.x0 << " "
421 << (int) ceil(_height - d.y0) << " "
422 << (int) ceil(d.x1) << "\n";
423 // According to Mike Sweet (the author of CUPS)
424 // HiResBoundingBox is only appropriate
425 // for EPS files. This means that we should
426 // distinguish if we export to ps or eps here.
427 // FIXME: I couldn't find HiResBoundingBox in the PS
428 // reference manual, so I guess we should skip
429 // it.
430 os << "%%HiResBoundingBox: " << (_height - d.y1) << " "
431 << d.x0 << " "
432 << (_height - d.y0) << " "
433 << d.x1 << "\n";
434 if (!epsexport) {
435 os << "%%DocumentMedia: plain "
436 << (int) ceil(_height) << " "
437 << (int) ceil(_width) << " "
438 << "0 () ()\n";
439 }
440 } else {
441 os << "%%Orientation: Portrait\n";
442 os << "%%BoundingBox: " << (int) d.x0 << " "
443 << (int) d.y0 << " "
444 << (int) ceil(d.x1) << " "
445 << (int) ceil(d.y1) << "\n";
446 os << "%%HiResBoundingBox: " << d.x0 << " "
447 << d.y0 << " "
448 << d.x1 << " "
449 << d.y1 << "\n";
450 os << "%%DocumentMedia: plain "
451 << (int) ceil(_width) << " "
452 << (int) ceil(_height) << " "
453 << "0 () ()\n";
454 }
456 os << "%%EndComments\n";
457 /* If font embedding requested, begin document setup section where to include font resources */
458 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. */
459 gint ret = fprintf(_begin_stream, "%s", os.str().c_str());
460 if(ret < 0) return ret;
462 /* Main Script part (after document setup) begins */
463 /* Empty os from all previous printing */
464 std::string clrstr = "";
465 os.str(clrstr);
466 // This will become problematic if we print multi paged documents:
467 os << "%%Page: 1 1\n";
469 if (pageLandscape) {
470 os << "90 rotate\n";
471 if (_bitmap) {
472 os << "0 " << (int) -ceil(_height) << " translate\n";
473 }
474 } else {
475 if (!_bitmap) {
476 os << "0 " << (int) ceil(_height) << " translate\n";
477 }
478 }
480 if (!_bitmap) {
481 os << PT_PER_PX << " " << -PT_PER_PX << " scale\n";
482 // from now on we can output px, but they will be treated as pt
483 }
485 /* As a new PS document is created, _fontlist has to be reinitialized (unref fonts from possible former PS docs) */
486 _fonts = g_tree_new_full((GCompareDataFunc)strcmp, NULL, (GDestroyNotify)g_free, (GDestroyNotify)g_free);
487 }
489 os << "0 0 0 setrgbcolor\n"
490 << "[] 0 setdash\n"
491 << "1 setlinewidth\n"
492 << "0 setlinejoin\n"
493 << "0 setlinecap\n";
495 /* FIXME: This function is declared to return unsigned, whereas fprintf returns a signed int *
496 * that can be zero if the first fprintf failed (os is empty) or "negative" (i.e. very positive
497 * in unsigned int interpretation) if the first fprintf failed but this one succeeds, or
498 * positive if both succeed. */
499 return fprintf(_stream, "%s", os.str().c_str());
500 }
502 unsigned int
503 PrintPS::finish(Inkscape::Extension::Print *mod)
504 {
505 if (!_stream) return 0;
507 if (_bitmap) {
508 double const dots_per_pt = _dpi / PT_PER_IN;
510 double const x0 = 0.0;
511 double const y0 = 0.0;
512 double const x1 = x0 + _width;
513 double const y1 = y0 + _height;
515 /* Bitmap width/height in bitmap dots. */
516 int const width = (int) (_width * dots_per_pt + 0.5);
517 int const height = (int) (_height * dots_per_pt + 0.5);
519 NRMatrix affine;
520 affine.c[0] = width / ((x1 - x0) * PX_PER_PT);
521 affine.c[1] = 0.0;
522 affine.c[2] = 0.0;
523 affine.c[3] = height / ((y1 - y0) * PX_PER_PT);
524 affine.c[4] = -affine.c[0] * x0;
525 affine.c[5] = -affine.c[3] * y0;
527 nr_arena_item_set_transform(mod->root, &affine);
529 guchar *const px = g_new(guchar, 4 * width * 64);
531 for (int y = 0; y < height; y += 64) {
532 /* Set area of interest. */
533 NRRectL bbox;
534 bbox.x0 = 0;
535 bbox.y0 = y;
536 bbox.x1 = width;
537 bbox.y1 = MIN(height, y + 64);
539 /* Update to renderable state. */
540 NRGC gc(NULL);
541 nr_matrix_set_identity(&gc.transform);
542 nr_arena_item_invoke_update(mod->root, &bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
543 /* Render */
544 /* This should take guchar* instead of unsigned char*) */
545 NRPixBlock pb;
546 nr_pixblock_setup_extern(&pb, NR_PIXBLOCK_MODE_R8G8B8A8N,
547 bbox.x0, bbox.y0, bbox.x1, bbox.y1,
548 (guchar*)px, 4 * width, FALSE, FALSE);
549 memset(px, 0xff, 4 * width * 64);
550 nr_arena_item_invoke_render(mod->root, &bbox, &pb, 0);
551 /* Blitter goes here */
552 NRMatrix imgt;
553 imgt.c[0] = (bbox.x1 - bbox.x0) / dots_per_pt;
554 imgt.c[1] = 0.0;
555 imgt.c[2] = 0.0;
556 imgt.c[3] = (bbox.y1 - bbox.y0) / dots_per_pt;
557 imgt.c[4] = 0.0;
558 imgt.c[5] = _height - y / dots_per_pt - (bbox.y1 - bbox.y0) / dots_per_pt;
560 print_image(_stream, px, bbox.x1 - bbox.x0, bbox.y1 - bbox.y0, 4 * width, &imgt);
561 }
563 g_free(px);
564 }
566 fprintf(_stream, "showpage\n");
567 int const res = fprintf(_stream, "%%%%EOF\n");
569 /* Flush stream to be sure. */
570 (void) fflush(_stream);
572 char c;
573 /* If font embedding... */
574 if(mod->get_param_bool("fontEmbedded"))
575 {
576 /* Close the document setup section that had been started (because all the needed resources are supposed to be included now) */
577 /*res = */fprintf(_begin_stream, "%s", "%%EndSetup\n");
578 /* 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 */
579 if(fseek(_stream, 0, SEEK_SET) == 0)
580 {
581 while((c = fgetc(_stream))!=EOF) fputc(c, _begin_stream);
582 }
583 fclose(_begin_stream);
584 }
586 /* fixme: should really use pclose for popen'd streams */
587 fclose(_stream);
588 _stream = 0;
589 _latin1_encoded_fonts.clear();
591 g_tree_destroy(_fonts);
593 return res;
594 }
596 unsigned int
597 PrintPS::bind(Inkscape::Extension::Print *mod, NRMatrix const *transform, float opacity)
598 {
599 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
600 if (_bitmap) return 0;
602 Inkscape::SVGOStringStream os;
603 os << "gsave [" << transform->c[0] << " "
604 << transform->c[1] << " "
605 << transform->c[2] << " "
606 << transform->c[3] << " "
607 << transform->c[4] << " "
608 << transform->c[5] << "] concat\n";
610 return fprintf(_stream, "%s", os.str().c_str());
611 }
613 unsigned int
614 PrintPS::release(Inkscape::Extension::Print *mod)
615 {
616 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
617 if (_bitmap) return 0;
619 return fprintf(_stream, "grestore\n");
620 }
622 unsigned int
623 PrintPS::comment(Inkscape::Extension::Print *mod, char const *comment)
624 {
625 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
626 if (_bitmap) return 0;
628 return fprintf(_stream, "%%! %s\n",comment);
629 }
631 void
632 PrintPS::print_fill_style(SVGOStringStream &os, SPStyle const *const style, NRRect const *pbox)
633 {
634 g_return_if_fail( style->fill.type == SP_PAINT_TYPE_COLOR
635 || ( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
636 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) );
638 if (style->fill.type == SP_PAINT_TYPE_COLOR) {
639 float rgb[3];
640 sp_color_get_rgb_floatv(&style->fill.value.color, rgb);
642 os << rgb[0] << " " << rgb[1] << " " << rgb[2] << " setrgbcolor\n";
644 } else {
645 g_assert( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
646 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
648 if (SP_IS_LINEARGRADIENT(SP_STYLE_FILL_SERVER(style))) {
650 SPLinearGradient *lg = SP_LINEARGRADIENT(SP_STYLE_FILL_SERVER(style));
651 NR::Point p1 (lg->x1.computed, lg->y1.computed);
652 NR::Point p2 (lg->x2.computed, lg->y2.computed);
653 if (pbox && SP_GRADIENT(lg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
654 // convert to userspace
655 NR::Matrix bbox2user(pbox->x1 - pbox->x0, 0, 0, pbox->y1 - pbox->y0, pbox->x0, pbox->y0);
656 p1 *= bbox2user;
657 p2 *= bbox2user;
658 }
660 os << "<<\n/ShadingType 2\n/ColorSpace /DeviceRGB\n";
661 os << "/Coords [" << p1[NR::X] << " " << p1[NR::Y] << " " << p2[NR::X] << " " << p2[NR::Y] <<"]\n";
662 os << "/Extend [true true]\n";
663 os << "/Domain [0 1]\n";
664 os << "/Function <<\n/FunctionType 3\n/Functions\n[\n";
666 sp_gradient_ensure_vector(SP_GRADIENT(lg)); // when exporting from commandline, vector is not built
667 for (unsigned i = 0; i + 1 < lg->vector.stops.size(); i++) {
668 float rgb[3];
669 sp_color_get_rgb_floatv(&lg->vector.stops[i].color, rgb);
670 os << "<<\n/FunctionType 2\n/Domain [0 1]\n";
671 os << "/C0 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
672 sp_color_get_rgb_floatv(&lg->vector.stops[i+1].color, rgb);
673 os << "/C1 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
674 os << "/N 1\n>>\n";
675 }
676 os << "]\n/Domain [0 1]\n";
677 os << "/Bounds [ ";
678 for (unsigned i = 0; i + 2 < lg->vector.stops.size(); i++) {
679 os << lg->vector.stops[i+1].offset <<" ";
680 }
681 os << "]\n";
682 os << "/Encode [ ";
683 for (unsigned i = 0; i + 1 < lg->vector.stops.size(); i++) {
684 os << "0 1 ";
685 }
686 os << "]\n";
687 os << ">>\n>>\n";
689 } else if (SP_IS_RADIALGRADIENT(SP_STYLE_FILL_SERVER(style))) {
691 SPRadialGradient *rg = SP_RADIALGRADIENT(SP_STYLE_FILL_SERVER(style));
692 NR::Point c(rg->cx.computed, rg->cy.computed);
693 NR::Point f(rg->fx.computed, rg->fy.computed);
694 double r = rg->r.computed;
695 if (pbox && SP_GRADIENT(rg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
696 // convert to userspace
697 NR::Matrix const bbox2user(pbox->x1 - pbox->x0, 0,
698 0, pbox->y1 - pbox->y0,
699 pbox->x0, pbox->y0);
700 c *= bbox2user;
701 f *= bbox2user;
702 r *= bbox2user.expansion();
703 }
705 os << "<<\n/ShadingType 3\n/ColorSpace /DeviceRGB\n";
706 os << "/Coords ["<< f[NR::X] <<" "<< f[NR::Y] <<" 0 "<< c[NR::X] <<" "<< c[NR::Y] <<" "<< r <<"]\n";
707 os << "/Extend [true true]\n";
708 os << "/Domain [0 1]\n";
709 os << "/Function <<\n/FunctionType 3\n/Functions\n[\n";
711 sp_gradient_ensure_vector(SP_GRADIENT(rg)); // when exporting from commandline, vector is not built
712 for (unsigned i = 0; i + 1 < rg->vector.stops.size(); i++) {
713 float rgb[3];
714 sp_color_get_rgb_floatv(&rg->vector.stops[i].color, rgb);
715 os << "<<\n/FunctionType 2\n/Domain [0 1]\n";
716 os << "/C0 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
717 sp_color_get_rgb_floatv(&rg->vector.stops[i+1].color, rgb);
718 os << "/C1 [" << rgb[0] << " " << rgb[1] << " " << rgb[2] << "]\n";
719 os << "/N 1\n>>\n";
720 }
721 os << "]\n/Domain [0 1]\n";
722 os << "/Bounds [ ";
723 for (unsigned i = 0; i + 2 < rg->vector.stops.size(); i++) {
724 os << rg->vector.stops[i+1].offset << " ";
725 }
726 os << "]\n";
727 os << "/Encode [ ";
728 for (unsigned i = 0; i + 1 < rg->vector.stops.size(); i++) {
729 os << "0 1 ";
730 }
731 os << "]\n";
732 os << ">>\n>>\n";
733 }
734 }
735 }
737 void
738 PrintPS::print_stroke_style(SVGOStringStream &os, SPStyle const *style)
739 {
740 float rgb[3];
741 sp_color_get_rgb_floatv(&style->stroke.value.color, rgb);
743 os << rgb[0] << " " << rgb[1] << " " << rgb[2] << " setrgbcolor\n";
745 // There are rare cases in which for a solid line stroke_dasharray_set is true. To avoid
746 // invalid PS-lines such as "[0.0000000 0.0000000] 0.0000000 setdash", which should be "[] 0 setdash",
747 // we first check if all components of stroke_dash.dash are 0.
748 bool LineSolid = true;
749 if (style->stroke_dash.n_dash &&
750 style->stroke_dash.dash )
751 {
752 int i = 0;
753 while (LineSolid && (i < style->stroke_dash.n_dash)) {
754 if (style->stroke_dash.dash[i] > 0.00000001)
755 LineSolid = false;
756 i++;
757 }
758 if (!LineSolid) {
759 os << "[";
760 for (i = 0; i < style->stroke_dash.n_dash; i++) {
761 if (i > 0) {
762 os << " ";
763 }
764 os << style->stroke_dash.dash[i];
765 }
766 os << "] " << style->stroke_dash.offset << " setdash\n";
767 } else {
768 os << "[] 0 setdash\n";
769 }
770 } else {
771 os << "[] 0 setdash\n";
772 }
774 os << style->stroke_width.computed << " setlinewidth\n";
775 os << style->stroke_linejoin.computed << " setlinejoin\n";
776 os << style->stroke_linecap.computed << " setlinecap\n";
777 }
780 unsigned int
781 PrintPS::fill(Inkscape::Extension::Print *mod, NRBPath const *bpath, NRMatrix const *ctm, SPStyle const *const style,
782 NRRect const *pbox, NRRect const *dbox, NRRect const *bbox)
783 {
784 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
785 if (_bitmap) return 0;
787 if ( style->fill.type == SP_PAINT_TYPE_COLOR
788 || ( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
789 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) )
790 {
791 Inkscape::SVGOStringStream os;
793 os << "gsave\n";
795 print_fill_style(os, style, pbox);
797 print_bpath(os, bpath->path);
799 if (style->fill_rule.value == SP_WIND_RULE_EVENODD) {
800 if (style->fill.type == SP_PAINT_TYPE_COLOR) {
801 os << "eofill\n";
802 } else {
803 g_assert( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
804 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
805 SPGradient const *g = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
806 os << "eoclip\n";
807 if (g->gradientTransform_set) {
808 os << "gsave [" << g->gradientTransform[0] << " " << g->gradientTransform[1]
809 << " " << g->gradientTransform[2] << " " << g->gradientTransform[3]
810 << " " << g->gradientTransform[4] << " " << g->gradientTransform[5] << "] concat\n";
811 }
812 os << "shfill\n";
813 if (g->gradientTransform_set) {
814 os << "grestore\n";
815 }
816 }
817 } else {
818 if (style->fill.type == SP_PAINT_TYPE_COLOR) {
819 os << "fill\n";
820 } else {
821 g_assert( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
822 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) );
823 SPGradient const *g = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
824 os << "clip\n";
825 if (g->gradientTransform_set) {
826 os << "gsave [" << g->gradientTransform[0] << " " << g->gradientTransform[1]
827 << " " << g->gradientTransform[2] << " " << g->gradientTransform[3]
828 << " " << g->gradientTransform[4] << " " << g->gradientTransform[5] << "] concat\n";
829 }
830 os << "shfill\n";
831 if (g->gradientTransform_set) {
832 os << "grestore\n";
833 }
834 }
835 }
837 os << "grestore\n";
839 fprintf(_stream, "%s", os.str().c_str());
840 }
842 return 0;
843 }
846 unsigned int
847 PrintPS::stroke(Inkscape::Extension::Print *mod, NRBPath const *bpath, NRMatrix const *ctm, SPStyle const *style,
848 NRRect const *pbox, NRRect const *dbox, NRRect const *bbox)
849 {
850 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
851 if (_bitmap) return 0;
853 if (style->stroke.type == SP_PAINT_TYPE_COLOR) {
854 Inkscape::SVGOStringStream os;
856 print_stroke_style(os, style);
858 print_bpath(os, bpath->path);
860 os << "stroke\n";
862 fprintf(_stream, "%s", os.str().c_str());
863 }
865 return 0;
866 }
868 unsigned int
869 PrintPS::image(Inkscape::Extension::Print *mod, guchar *px, unsigned int w, unsigned int h, unsigned int rs,
870 NRMatrix const *transform, SPStyle const *style)
871 {
872 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
873 if (_bitmap) return 0;
875 return print_image(_stream, px, w, h, rs, transform);
876 }
878 /* PSFontName is now useless (cf. text() method code) */
879 char const *
880 PrintPS::PSFontName(SPStyle const *style)
881 {
882 font_instance *tf = (font_factory::Default())->Face(style->text->font_family.value, font_style_to_pos(*style));
884 char const *n;
885 char name_buf[256];
887 // PS does not like spaces in fontnames, replace them with the usual dashes.
889 if (tf) {
890 tf->PSName(name_buf, sizeof(name_buf));
891 n = g_strdelimit(name_buf, " ", '-');
892 tf->Unref();
893 } else {
894 // 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
895 bool i = (style->font_style.value == SP_CSS_FONT_STYLE_ITALIC);
896 bool o = (style->font_style.value == SP_CSS_FONT_STYLE_OBLIQUE);
897 bool b = (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) ||
898 (style->font_weight.value >= SP_CSS_FONT_WEIGHT_500 && style->font_weight.value <= SP_CSS_FONT_WEIGHT_900);
900 n = g_strdup_printf("%s%s%s%s",
901 g_strdelimit(style->text->font_family.value, " ", '-'),
902 (b || i || o) ? "-" : "",
903 (b) ? "Bold" : "",
904 (i) ? "Italic" : ((o) ? "Oblique" : "") );
905 }
907 return g_strdup(n);
908 }
910 //LSB = Least Significant Byte
911 //converts 4-byte array to "LSB first" to "LSB last"
912 /**
913 * (Used by PrintPS::embed_t1 (from libgnomeprint/gnome-font-face.c),
914 * to get the length of data segment (bytes 3-6 in IBM PC (PostScript) font file format.
915 * Reference: Adobe technical note 5040, "Supporting Downloadable PostScript
916 * Language Fonts", page 9)
917 */
919 #define INT32_LSB_2_5(q) ((q)[2] + ((q)[3] << 8) + ((q)[4] << 16) + ((q)[5] << 24))
921 /**
922 * \brief For "Type 1" font only, print font data in output stream, to embed font data in PS output.
923 * \param os Stream of output.
924 * \param font Font whose data to embed.
925 * \return FALSE if font embedding canceled (due to error or not supported font type), TRUE otherwise
926 * TODO: enable font embedding for True Type
927 */
928 //adapted more/less from libgnomeprint/gnome_font_face_ps_embed_t1()
929 bool
930 PrintPS::embed_t1 (SVGOStringStream &os, font_instance* font)
931 {
932 //check font type
933 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
934 const FT_String* font_type = FT_Get_X11_Font_Format(font_face);
935 g_return_val_if_fail (_fontTypesMap[font_type] == FONT_TYPE1, false);
936 //get font filename, stream to font file and size
937 FT_Stream font_stream = font_face->stream;
938 const char* font_filename = (char*) font_stream->pathname.pointer;
939 unsigned long font_stream_size = font_stream->size;
940 //first detect if font file is in IBM PC format
941 /**
942 * if first byte is 0x80, font file is pfb, do the same as a pfb to pfa converter
943 * Reference: Adobe technical note 5040, "Supporting Downloadable PostScript
944 * Language Fonts", page 9
945 * else: include all the ASCII data in the font pfa file
946 **/
947 char* buf = new char[7];
948 unsigned char* buffer = new unsigned char[7];//for the 6 header bytes (data segment length is unknown at this point) and final '\0'
949 std::string ascii_data;//for data segment "type 1" in IBM PC Format
950 //read the 6 header bytes
951 //for debug: g_warning("Reading from font file %s...", font_filename);
952 font_stream->close(font_stream);
953 ifstream font_file (font_filename, ios::in|ios::binary);
954 if (!font_file.is_open()) {
955 g_warning ("file %s: line %d: Cannot open font file %s", __FILE__, __LINE__, font_filename);
956 return false;
957 }
958 font_file.read(buf, 6);
959 buffer = (unsigned char*) buf;
961 //If font file is pfb, do the same as pfb to pfa converter
962 //check byte 1
963 if (buffer[0] == 0x80) {
964 const char hextab[17] = "0123456789abcdef";
965 unsigned long offset = 0;
967 while (offset < font_stream_size) {
968 gint length, i;
969 if (buffer[0] != 0x80) {
970 g_warning ("file %s: line %d: Corrupt %s", __FILE__, __LINE__, font_filename);
971 //TODO: print some default font data anyway like libgnomeprint/gnome_font_face_ps_embed_empty
972 return false;
973 }
974 switch (buffer[1]) {
975 case 1:
976 //get data segment length from bytes 3-6
977 //(Note: byte 1 is first byte in comments to match Adobe technical note 5040, but index 0 in code)
978 length = INT32_LSB_2_5 (buffer);
979 offset += 6;
980 //resize the buffer to fit the data segment length
981 delete [] buf;
982 buf = new char[length + 1];
983 buffer = new unsigned char[length + 1];
984 //read and print all the data segment length
985 font_file.read(buf, length);
986 buffer = (unsigned char*) buf;
987 /**
988 * Assigning a part from the buffer of length "length" ensures
989 * that no incorrect extra character will be printed and make the PS output invalid
990 * That was the case with the code:
991 * os << buffer;
992 * (A substring method could have been used as well.)
993 */
994 ascii_data.assign(buf, 0, length);
995 os << ascii_data;
996 offset += length;
997 //read next 6 header bytes
998 font_file.read(buf, 6);
999 break;
1000 case 2:
1001 length = INT32_LSB_2_5 (buffer);
1002 offset += 6;
1003 //resize the buffer to fit the data segment length
1004 delete [] buf;
1005 buf = new char[length + 1];
1006 buffer = new unsigned char[length + 1];
1007 //read and print all the data segment length
1008 font_file.read(buf, length);
1009 buffer = (unsigned char*) buf;
1010 for (i = 0; i < length; i++) {
1011 os << hextab[buffer[i] >> 4];
1012 os << hextab[buffer[i] & 15];
1013 offset += 1;
1014 if ((i & 31) == 31 || i == length - 1)
1015 os << "\n";
1016 }
1017 //read next 6 header bytes
1018 font_file.read(buf, 6);
1019 break;
1020 case 3:
1021 /* Finished */
1022 os << "\n";
1023 offset = font_stream_size;
1024 break;
1025 default:
1026 os << "%%%ERROR: Font file corrupted at byte " << offset << "\n";
1027 //TODO: print some default font data anyway like libgnomeprint/gnome_font_face_ps_embed_empty
1028 return false;
1029 }
1030 }
1031 }
1032 //else: font file is pfa, include all directly
1033 else {
1034 //font is not in IBM PC format, all the file content can be directly printed
1035 //resize buffer
1036 delete [] buf;
1037 buf = new char[font_stream_size + 1];
1038 delete [] buffer;
1039 font_file.seekg (0, ios::beg);
1040 font_file.read(buf, font_stream_size);
1041 /**
1042 * Assigning a part from the buffer of length "length" ensures
1043 * that no incorrect extra character will be printed and make the PS output invalid
1044 * That was the case with the code:
1045 * os << buffer;
1046 * (A substring method could have been used as well.)
1047 */
1048 ascii_data.assign(buf, 0, font_stream_size);
1049 os << ascii_data;
1050 }
1051 font_file.close();
1052 delete [] buf;
1053 buf = NULL;
1054 buffer = NULL;// Clear buffer to prevent using invalid memory reference.
1056 char font_psname[256];
1057 font->PSName(font_psname, sizeof(font_psname));
1058 FT_Long font_num_glyphs = font_face->num_glyphs;
1059 if (font_num_glyphs < 256) {
1060 gint glyph;
1061 /* 8-bit vector */
1062 os << "(" << font_psname << ") cvn findfont dup length dict begin\n";
1063 os << "{1 index /FID ne {def} {pop pop} ifelse} forall\n";
1064 os << "/Encoding [\n";
1065 for (glyph = 0; glyph < 256; glyph++) {
1066 guint g;
1067 gchar c[256];
1068 FT_Error status;
1069 g = (glyph < font_num_glyphs) ? glyph : 0;
1070 status = FT_Get_Glyph_Name (font_face, g, c, 256);
1072 if (status != FT_Err_Ok) {
1073 g_warning ("file %s: line %d: Glyph %d has no name in %s", __FILE__, __LINE__, g, font_filename);
1074 g_snprintf (c, 256, ".notdef");
1075 }
1077 os << "/" << c << ( ((glyph & 0xf) == 0xf)?"\n":" " );
1078 }
1079 os << "] def currentdict end\n";
1080 //TODO: manage several font instances for same ps name like in libgnomeprint/gnome_print_ps2_set_font_real()
1081 //gf_pso_sprintf (pso, "(%s) cvn exch definefont pop\n", pso->encodedname);
1082 os << "(" << font_psname << ") cvn exch definefont pop\n";
1083 } else {
1084 gint nfonts, i, j;
1085 /* 16-bit vector */
1086 nfonts = (font_num_glyphs + 255) >> 8;
1088 os << "32 dict begin\n";
1089 /* Common entries */
1090 os << "/FontType 0 def\n";
1091 os << "/FontMatrix [1 0 0 1 0 0] def\n";
1092 os << "/FontName (" << font_psname << "-Glyph-Composite) cvn def\n";
1093 os << "/LanguageLevel 2 def\n";
1095 /* Type 0 entries */
1096 os << "/FMapType 2 def\n";
1098 /* Bitch 'o' bitches */
1099 os << "/FDepVector [\n";
1101 for (i = 0; i < nfonts; i++) {
1102 os << "(" << font_psname << ") cvn findfont dup length dict begin\n";
1103 os << "{1 index /FID ne {def} {pop pop} ifelse} forall\n";
1104 os << "/Encoding [\n";
1105 for (j = 0; j < 256; j++) {
1106 gint glyph;
1107 gchar c[256];
1108 FT_Error status;
1109 glyph = 256 * i + j;
1110 if (glyph >= font_num_glyphs)
1111 glyph = 0;
1112 status = FT_Get_Glyph_Name (font_face, glyph, c, 256);
1113 if (status != FT_Err_Ok) {
1114 g_warning ("file %s: line %d: Glyph %d has no name in %s", __FILE__, __LINE__, glyph, font_filename);
1115 g_snprintf (c, 256, ".notdef");
1116 }
1117 os << "/" << c << ( ((j & 0xf) == 0xf)?"\n":" " );
1118 }
1119 os << "] def\n";
1120 os << "currentdict end (" << font_psname << "-Glyph-Page-";
1121 os << std::dec << i;
1122 os << ") cvn exch definefont\n";
1123 }
1124 os << "] def\n";
1125 os << "/Encoding [\n";
1126 for (i = 0; i < 256; i++) {
1127 gint fn;
1128 fn = (i < nfonts) ? i : 0;
1129 os << std::dec << fn;
1130 os << ( ((i & 0xf) == 0xf) ? "\n" : " " );
1131 }
1132 os << "] def\n";
1133 os << "currentdict end\n";
1134 //TODO: manage several font instances for same ps name like in libgnomeprint/gnome_print_ps2_set_font_real()
1135 //gf_pso_sprintf (pso, "(%s) cvn exch definefont pop\n", pso->encodedname);
1136 os << "(" << font_psname << ") cvn exch definefont pop\n";
1137 }
1138 //font embedding completed
1139 return true;
1140 }
1144 /**
1145 * \brief Print font data in output stream, to embed font data in PS output.
1146 * \param os Stream of output.
1147 * \param font Font whose data to embed.
1148 * \return FALSE if font embedding canceled (due to error or not supported font type), TRUE otherwise
1149 */
1150 //adapted from libgnomeprint/gnome_font_face_ps_embed()
1151 bool PrintPS::embed_font(SVGOStringStream &os, font_instance* font)
1152 {
1153 //Hinted at by a comment in libgnomeprint/fcpattern_to_gp_font_entry()
1154 //Determining the font type in the "Pango way"
1155 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
1156 const FT_String* font_type = FT_Get_X11_Font_Format(font_face);
1158 /**
1159 * Possible values of "font_type": Type 1, TrueType, etc.
1160 * Embedding available only for Type 1 fonts so far.
1161 */
1162 //TODO: provide support for other font types (TrueType is a priority)
1163 switch(_fontTypesMap[font_type])
1164 {
1165 case FONT_TYPE1:
1166 return embed_t1 (os, font);
1167 //TODO: implement TT font embedding
1168 /*case FONT_TRUETYPE:
1169 embed_tt (os, font);
1170 break;*/
1171 default:
1172 g_warning("Unknown (not supported) font type for embedding: %s", font_type);
1173 //TODO: embed something like in libgnomeprint/gnome_font_face_ps_embed_empty();
1174 return false;
1175 }
1176 }
1179 /**
1180 * \brief Converts UTF-8 string to sequence of glyph numbers for PostScript string (cf. "show" commands.).
1181 * \param os Stream of output.
1182 * \param font Font used for unicode->glyph mapping.
1183 * \param unistring UTF-8 encoded string to convert.
1184 */
1185 void PrintPS::print_glyphlist(SVGOStringStream &os, font_instance* font, Glib::ustring unistring)
1186 {
1187 //iterate through unicode chars in unistring
1188 Glib::ustring::iterator unistring_iter;
1189 gunichar unichar;
1190 gint glyph_index, glyph_page;
1192 FT_Face font_face = pango_ft2_font_get_face(font->pFont);
1193 FT_Long font_num_glyphs = font_face->num_glyphs;
1194 //whether font has more than one glyph pages (16-bit encoding)
1195 bool two_bytes_encoded = (font_num_glyphs > 255);
1197 for (unistring_iter = unistring.begin(); unistring_iter!=unistring.end(); unistring_iter++)
1198 {
1199 //get unicode char
1200 unichar = *unistring_iter;
1201 //get matching glyph index in current font for unicode char
1202 //default glyph index is 0 for undefined font character (glyph unavailable)
1203 //TODO: if glyph unavailable for current font, use a default font among the most Unicode-compliant - e.g. Bitstream Cyberbit - I guess
1204 glyph_index = font->MapUnicodeChar(unichar);
1205 //if more than one glyph pages for current font (16-bit encoding),
1206 if(two_bytes_encoded)
1207 {
1208 //add glyph page before glyph index.
1209 glyph_page = (glyph_index >> 8) & 0xff;
1210 os << "\\";
1211 //convert in octal code before printing
1212 os << std::oct << glyph_page;
1213 }
1214 //(If one page - 8-bit encoding -, nothing to add.)
1215 //TODO: explain the following line inspired from libgnomeprint/gnome_print_ps2_glyphlist()
1216 glyph_index = glyph_index & 0xff;
1217 //TODO: mark glyph as used for current font, if Inkscape has to embed minimal font data in PS
1218 os << "\\";
1219 //convert in octal code before printing
1220 os << std::oct << glyph_index;
1221 }
1222 }
1224 unsigned int
1225 PrintPS::text(Inkscape::Extension::Print *mod, char const *text, NR::Point p,
1226 SPStyle const *const style)
1227 {
1228 if (!_stream) return 0; // XXX: fixme, returning -1 as unsigned.
1229 if (_bitmap) return 0;
1231 //check whether fonts have to be embedded in the PS output
1232 //if not, use the former way of Inkscape to print text
1233 gboolean font_embedded = mod->fontEmbedded();
1235 Inkscape::SVGOStringStream os;
1236 //find font
1237 /**
1238 * A font_instance object is necessary for the next steps,
1239 * that's why using PSFontName() method just to get the PS fontname
1240 * is not enough and not appropriate
1241 */
1242 font_instance *tf = (font_factory::Default())->Face(style->text->font_family.value, font_style_to_pos(*style));
1243 const gchar *fn = NULL;
1244 char name_buf[256];
1246 //check whether font was found
1247 /**
1248 * This check is not strictly reliable
1249 * since Inkscape returns a default font if font not found.
1250 * This is just to be consistent with the method PSFontName().
1251 */
1252 if (tf) {
1253 //get font PS name
1254 tf->PSName(name_buf, sizeof(name_buf));
1255 fn = name_buf;
1256 } else {
1257 // this system does not have this font, so cancel font embedding...
1258 font_embedded = FALSE;
1259 //this case seems to never happen since Inkscape uses a default font instead (like BitstreamVeraSans on Windows)
1260 g_warning("Font %s not found.", fn);
1261 //...and just use the name from SVG in the hope that PS interpreter will make sense of it
1262 bool i = (style->font_style.value == SP_CSS_FONT_STYLE_ITALIC);
1263 bool o = (style->font_style.value == SP_CSS_FONT_STYLE_OBLIQUE);
1264 bool b = (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) ||
1265 (style->font_weight.value >= SP_CSS_FONT_WEIGHT_500 && style->font_weight.value <= SP_CSS_FONT_WEIGHT_900);
1267 fn = g_strdup_printf("%s%s%s%s",
1268 g_strdelimit(style->text->font_family.value, " ", '-'),
1269 (b || i || o) ? "-" : "",
1270 (b) ? "Bold" : "",
1271 (i) ? "Italic" : ((o) ? "Oblique" : "") );
1272 }
1274 /**
1275 * If font embedding is requested, tempt to embed the font the first time it is used, once and for all.
1276 * There is no selection of the glyph descriptions to embed, based on the characters used effectively in the document.
1277 * (TODO?)
1278 * Else, back to the former way of printing.
1279 */
1280 gpointer is_embedded;
1281 //if not first time the font is used and if font embedding requested, check whether the font has been embedded (successfully the first time).
1282 if(g_tree_lookup_extended(_fonts, fn, NULL, &is_embedded)) font_embedded = font_embedded && (strcmp((char *)is_embedded, "TRUE") == 0);
1283 else
1284 {
1285 //first time the font is used
1286 if(font_embedded)
1287 {
1288 //embed font in PS output
1289 //adapted from libgnomeprint/gnome_print_ps2_close()
1290 os << "%%BeginResource: font " << fn << "\n";
1291 font_embedded = embed_font(os, tf);
1292 os << "%%EndResource: font " << fn << "\n";
1293 if(!font_embedded) g_warning("Font embedding canceled for font: %s", fn);
1294 else fprintf(_begin_stream, "%s", os.str().c_str());
1295 //empty os before resume printing to the script stream
1296 std::string clrstr = "";
1297 os.str(clrstr);
1299 }
1300 //add to the list
1301 g_tree_insert(_fonts, g_strdup(fn), g_strdup((font_embedded)?"TRUE":"FALSE"));
1302 }
1304 Glib::ustring s;
1305 // Escape chars
1306 Inkscape::SVGOStringStream escaped_text;
1307 //if font embedding, all characters will be converted to glyph indices (cf. PrintPS::print_glyphlist()),
1308 //so no need to escape characters
1309 //else back to the old way, i.e. escape chars: '\',')','(' and UTF-8 ones
1310 if(font_embedded) s = text;
1311 else {
1312 escaped_text << std::oct;
1313 for (gchar const *p_text = text ; *p_text ; p_text = g_utf8_next_char(p_text)) {
1314 gunichar const c = g_utf8_get_char(p_text);
1315 if (c == '\\' || c == ')' || c == '(')
1316 escaped_text << '\\' << static_cast<char>(c);
1317 else if (c >= 0x80)
1318 escaped_text << '\\' << c;
1319 else
1320 escaped_text << static_cast<char>(c);
1321 }
1322 }
1324 os << "gsave\n";
1326 // set font
1327 if(font_embedded) os << "/" << fn << " findfont\n";
1328 else {
1329 if (_latin1_encoded_fonts.find(fn) == _latin1_encoded_fonts.end()) {
1330 if (!_newlatin1font_proc_defined) {
1331 // input: newfontname, existingfontname
1332 // output: new font object, also defined to newfontname
1333 os << "/newlatin1font " // name of the proc
1334 "{findfont dup length dict copy " // load the font and create a copy of it
1335 "dup /Encoding ISOLatin1Encoding put " // change the encoding in the copy
1336 "definefont} def\n"; // create the new font and leave it on the stack, define the proc
1337 _newlatin1font_proc_defined = true;
1338 }
1339 if(strchr(fn, ' ') == NULL)
1340 os << "/" << fn << "-ISOLatin1 /" << fn << " newlatin1font\n";
1341 else
1342 os << "(/" << fn << "-ISOLatin1) (/" << fn << ") newlatin1font\n";
1343 _latin1_encoded_fonts.insert(fn);
1344 } else
1345 if(strchr(fn, ' ') == NULL)
1346 os << "/" << fn << "-ISOLatin1 findfont\n";
1347 else
1348 os << "(/" << fn << "-ISOLatin1) findfont\n";
1349 }
1350 os << style->font_size.computed << " scalefont\n";
1351 os << "setfont\n";
1352 //The commented line beneath causes Inkscape to crash under Linux but not under Windows
1353 //g_free((void*) fn);
1355 if ( style->fill.type == SP_PAINT_TYPE_COLOR
1356 || ( style->fill.type == SP_PAINT_TYPE_PAINTSERVER
1357 && SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style)) ) )
1358 {
1359 // set fill style
1360 print_fill_style(os, style, NULL);
1361 // FIXME: we don't know the pbox of text, so have to pass NULL. This means gradients with
1362 // bbox units won't work with text. However userspace gradients don't work with text either
1363 // (text is black) for some reason.
1365 os << "newpath\n";
1366 os << p[NR::X] << " " << p[NR::Y] << " moveto\n";
1367 os << "(";
1368 if(font_embedded) print_glyphlist(os, tf, s);
1369 else os << escaped_text.str();
1370 os << ") show\n";
1371 }
1373 if (style->stroke.type == SP_PAINT_TYPE_COLOR) {
1375 // set stroke style
1376 print_stroke_style(os, style);
1378 // paint stroke
1379 os << "newpath\n";
1380 os << p[NR::X] << " " << p[NR::Y] << " moveto\n";
1381 os << "(";
1382 if(font_embedded) print_glyphlist(os, tf, s);
1383 else os << escaped_text.str();
1384 os << ") false charpath stroke\n";
1385 }
1387 if(tf) tf->Unref();
1389 os << "grestore\n";
1391 fprintf(_stream, "%s", os.str().c_str());
1393 return 0;
1394 }
1398 /* PostScript helpers */
1400 void
1401 PrintPS::print_bpath(SVGOStringStream &os, NArtBpath const *bp)
1402 {
1403 os << "newpath\n";
1404 bool closed = false;
1405 while (bp->code != NR_END) {
1406 switch (bp->code) {
1407 case NR_MOVETO:
1408 if (closed) {
1409 os << "closepath\n";
1410 }
1411 closed = true;
1412 os << bp->x3 << " " << bp->y3 << " moveto\n";
1413 break;
1414 case NR_MOVETO_OPEN:
1415 if (closed) {
1416 os << "closepath\n";
1417 }
1418 closed = false;
1419 os << bp->x3 << " " << bp->y3 << " moveto\n";
1420 break;
1421 case NR_LINETO:
1422 os << bp->x3 << " " << bp->y3 << " lineto\n";
1423 break;
1424 case NR_CURVETO:
1425 os << bp->x1 << " " << bp->y1 << " "
1426 << bp->x2 << " " << bp->y2 << " "
1427 << bp->x3 << " " << bp->y3 << " curveto\n";
1428 break;
1429 default:
1430 break;
1431 }
1432 bp += 1;
1433 }
1434 if (closed) {
1435 os << "closepath\n";
1436 }
1437 }
1439 /* The following code is licensed under GNU GPL.
1440 ** The packbits, ascii85 and imaging printing code
1441 ** is from the gimp's postscript.c.
1442 */
1444 /**
1445 * \param nin Number of bytes of source data.
1446 * \param src Source data.
1447 * \param nout Number of output bytes.
1448 * \param dst Buffer for output.
1449 */
1450 void
1451 PrintPS::compress_packbits(int nin,
1452 guchar *src,
1453 int *nout,
1454 guchar *dst)
1456 {
1457 register guchar c;
1458 int nrepeat, nliteral;
1459 guchar *run_start;
1460 guchar *start_dst = dst;
1461 guchar *last_literal = NULL;
1463 for (;;) {
1464 if (nin <= 0) break;
1466 run_start = src;
1467 c = *run_start;
1469 /* Search repeat bytes */
1470 if ((nin > 1) && (c == src[1])) {
1471 nrepeat = 1;
1472 nin -= 2;
1473 src += 2;
1474 while ((nin > 0) && (c == *src)) {
1475 nrepeat++;
1476 src++;
1477 nin--;
1478 if (nrepeat == 127) break; /* Maximum repeat */
1479 }
1481 /* Add two-byte repeat to last literal run ? */
1482 if ( (nrepeat == 1)
1483 && (last_literal != NULL) && (((*last_literal)+1)+2 <= 128) )
1484 {
1485 *last_literal += 2;
1486 *(dst++) = c;
1487 *(dst++) = c;
1488 continue;
1489 }
1491 /* Add repeat run */
1492 *(dst++) = (guchar)((-nrepeat) & 0xff);
1493 *(dst++) = c;
1494 last_literal = NULL;
1495 continue;
1496 }
1497 /* Search literal bytes */
1498 nliteral = 1;
1499 nin--;
1500 src++;
1502 for (;;) {
1503 if (nin <= 0) break;
1505 if ((nin >= 2) && (src[0] == src[1])) /* A two byte repeat ? */
1506 break;
1508 nliteral++;
1509 nin--;
1510 src++;
1511 if (nliteral == 128) break; /* Maximum literal run */
1512 }
1514 /* Could be added to last literal run ? */
1515 if ((last_literal != NULL) && (((*last_literal)+1)+nliteral <= 128)) {
1516 *last_literal += nliteral;
1517 } else {
1518 last_literal = dst;
1519 *(dst++) = (guchar)(nliteral-1);
1520 }
1521 while (nliteral-- > 0) *(dst++) = *(run_start++);
1522 }
1523 *nout = dst - start_dst;
1524 }
1526 void
1527 PrintPS::ascii85_init(void)
1528 {
1529 ascii85_len = 0;
1530 ascii85_linewidth = 0;
1531 }
1533 void
1534 PrintPS::ascii85_flush(SVGOStringStream &os)
1535 {
1536 char c[5];
1537 bool const zero_case = (ascii85_buf == 0);
1538 static int const max_linewidth = 75;
1540 for (int i = 4; i >= 0; i--) {
1541 c[i] = (ascii85_buf % 85) + '!';
1542 ascii85_buf /= 85;
1543 }
1544 /* check for special case: "!!!!!" becomes "z", but only if not
1545 * at end of data. */
1546 if (zero_case && (ascii85_len == 4)) {
1547 if (ascii85_linewidth >= max_linewidth) {
1548 os << '\n';
1549 ascii85_linewidth = 0;
1550 }
1551 os << 'z';
1552 ascii85_linewidth++;
1553 } else {
1554 for (int i = 0; i < ascii85_len+1; i++) {
1555 if ((ascii85_linewidth >= max_linewidth) && (c[i] != '%')) {
1556 os << '\n';
1557 ascii85_linewidth = 0;
1558 }
1559 os << c[i];
1560 ascii85_linewidth++;
1561 }
1562 }
1564 ascii85_len = 0;
1565 ascii85_buf = 0;
1566 }
1568 inline void
1569 PrintPS::ascii85_out(guchar byte, SVGOStringStream &os)
1570 {
1571 if (ascii85_len == 4)
1572 ascii85_flush(os);
1574 ascii85_buf <<= 8;
1575 ascii85_buf |= byte;
1576 ascii85_len++;
1577 }
1579 void
1580 PrintPS::ascii85_nout(int n, guchar *uptr, SVGOStringStream &os)
1581 {
1582 while (n-- > 0) {
1583 ascii85_out(*uptr, os);
1584 uptr++;
1585 }
1586 }
1588 void
1589 PrintPS::ascii85_done(SVGOStringStream &os)
1590 {
1591 if (ascii85_len) {
1592 /* zero any unfilled buffer portion, then flush */
1593 ascii85_buf <<= (8 * (4-ascii85_len));
1594 ascii85_flush(os);
1595 }
1597 os << "~>\n";
1598 }
1600 unsigned int
1601 PrintPS::print_image(FILE *ofp, guchar *px, unsigned int width, unsigned int height, unsigned int rs,
1602 NRMatrix const *transform)
1603 {
1604 Inkscape::SVGOStringStream os;
1606 os << "gsave\n";
1608 os << "[" << transform->c[0] << " "
1609 << transform->c[1] << " "
1610 << transform->c[2] << " "
1611 << transform->c[3] << " "
1612 << transform->c[4] << " "
1613 << transform->c[5] << "] concat\n";
1615 /* Write read image procedure */
1616 os << "<<\n";
1617 os << " /ImageType 3\n";
1618 os << " /InterleaveType 1\n";
1620 os << " /MaskDict\n";
1621 os << " <<\n";
1622 os << " /ImageType 1\n";
1623 os << " /Width " << width << "\n";
1624 os << " /Height " << height << "\n";
1625 os << " /ImageMatrix "
1626 << "[" << width << " "
1627 << 0 << " "
1628 << 0 << " "
1629 << -((long) height) << " "
1630 << 0 << " "
1631 << height << "]\n";
1632 os << " /BitsPerComponent 8\n";
1633 os << " /Decode [1 0]\n";
1634 os << " >>\n";
1636 os << " /DataDict\n";
1637 os << " <<\n";
1638 os << " /ImageType 1\n";
1639 os << " /Width " << width << "\n";
1640 os << " /Height " << height << "\n";
1641 os << " /ImageMatrix "
1642 << "[" << width << " "
1643 << 0 << " "
1644 << 0 << " "
1645 << -((long )height) << " "
1646 << 0 << " "
1647 << height << "]\n";
1648 os << " /DataSource currentfile /ASCII85Decode filter\n";
1649 os << " /BitsPerComponent 8\n";
1650 os << " /Decode [0 1 0 1 0 1]\n";
1651 os << " >>\n";
1653 os << ">>\n";
1655 /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
1656 guchar *const packb = (guchar *)g_malloc((4*width * 105)/100+2);
1657 guchar *const plane = (guchar *)g_malloc(4*width);
1659 os << "image\n";
1661 ascii85_init();
1663 for (unsigned i = 0; i < height; i++) {
1664 guchar const *const src = px + i * rs;
1666 guchar const *src_ptr = src;
1667 guchar *plane_ptr = plane;
1668 for (unsigned j = 0; j < width; j++) {
1669 *(plane_ptr++) = *(src_ptr+3);
1670 *(plane_ptr++) = *(src_ptr+0);
1671 *(plane_ptr++) = *(src_ptr+1);
1672 *(plane_ptr++) = *(src_ptr+2);
1673 src_ptr += 4;
1674 }
1676 ascii85_nout(4*width, plane, os);
1677 }
1678 ascii85_done(os);
1680 g_free(packb);
1681 g_free(plane);
1683 os << "grestore\n";
1685 fprintf(ofp, "%s", os.str().c_str());
1687 return 0;
1688 }
1690 bool
1691 PrintPS::textToPath(Inkscape::Extension::Print * ext)
1692 {
1693 return ext->get_param_bool("textToPath");
1694 }
1696 /**
1697 * \brief Get "fontEmbedded" param
1698 * \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
1699 * \retval FALSE No font embedding
1700 *
1701 * Only available for Adobe Type 1 fonts in EPS output till now
1702 */
1703 bool
1704 PrintPS::fontEmbedded(Inkscape::Extension::Print * ext)
1705 {
1706 return ext->get_param_bool("fontEmbedded");
1707 }
1709 #include "clear-n_.h"
1711 void
1712 PrintPS::init(void)
1713 {
1714 /* SVG in */
1715 (void) Inkscape::Extension::build_from_mem(
1716 "<inkscape-extension>\n"
1717 "<name>" N_("Postscript Print") "</name>\n"
1718 "<id>" SP_MODULE_KEY_PRINT_PS "</id>\n"
1719 "<param name=\"bitmap\" type=\"boolean\">FALSE</param>\n"
1720 "<param name=\"resolution\" type=\"string\">72</param>\n"
1721 "<param name=\"destination\" type=\"string\">| lp</param>\n"
1722 "<param name=\"pageBoundingBox\" type=\"boolean\">TRUE</param>\n"
1723 "<param name=\"textToPath\" type=\"boolean\">TRUE</param>\n"
1724 "<param name=\"fontEmbedded\" type=\"boolean\">FALSE</param>\n"
1725 "<print/>\n"
1726 "</inkscape-extension>", new PrintPS());
1727 }
1730 } /* namespace Internal */
1731 } /* namespace Extension */
1732 } /* namespace Inkscape */
1734 /* End of GNU GPL code */
1737 /*
1738 Local Variables:
1739 mode:c++
1740 c-file-style:"stroustrup"
1741 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1742 indent-tabs-mode:nil
1743 fill-column:99
1744 End:
1745 */
1746 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :