1 #define __SP_DOCUMENT_C__
3 /** \file
4 * SPDocument manipulation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * MenTaLguY <mental@rydia.net>
9 * bulia byak <buliabyak@users.sf.net>
10 *
11 * Copyright (C) 2004-2005 MenTaLguY
12 * Copyright (C) 1999-2002 Lauris Kaplinski
13 * Copyright (C) 2000-2001 Ximian, Inc.
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 /** \class SPDocument
19 * SPDocument serves as the container of both model trees (agnostic XML
20 * and typed object tree), and implements all of the document-level
21 * functionality used by the program. Many document level operations, like
22 * load, save, print, export and so on, use SPDocument as their basic datatype.
23 *
24 * SPDocument implements undo and redo stacks and an id-based object
25 * dictionary. Thanks to unique id attributes, the latter can be used to
26 * map from the XML tree back to the object tree.
27 *
28 * SPDocument performs the basic operations needed for asynchronous
29 * update notification (SPObject ::modified virtual method), and implements
30 * the 'modified' signal, as well.
31 */
34 #define noSP_DOCUMENT_DEBUG_IDLE
35 #define noSP_DOCUMENT_DEBUG_UNDO
37 #ifdef HAVE_CONFIG_H
38 # include "config.h"
39 #endif
40 #include <gtk/gtkmain.h>
41 #include <string>
42 #include <cstring>
44 #include "application/application.h"
45 #include "application/editor.h"
46 #include "desktop.h"
47 #include "dir-util.h"
48 #include "display/nr-arena-item.h"
49 #include "document-private.h"
50 #include "helper/units.h"
51 #include "inkscape-private.h"
52 #include "inkscape-version.h"
53 #include "libavoid/router.h"
54 #include "persp3d.h"
55 #include "preferences.h"
56 #include "profile-manager.h"
57 #include "rdf.h"
58 #include "sp-item-group.h"
59 #include "sp-namedview.h"
60 #include "sp-object-repr.h"
61 #include "transf_mat_3x4.h"
62 #include "unit-constants.h"
63 #include "xml/repr.h"
64 #include "xml/rebase-hrefs.h"
66 #define SP_DOCUMENT_UPDATE_PRIORITY (G_PRIORITY_HIGH_IDLE - 1)
69 static gint sp_document_idle_handler(gpointer data);
71 gboolean sp_document_resource_list_free(gpointer key, gpointer value, gpointer data);
73 static gint doc_count = 0;
75 static unsigned long next_serial = 0;
77 SPDocument::SPDocument() :
78 keepalive(FALSE),
79 virgin(TRUE),
80 modified_since_save(FALSE),
81 rdoc(0),
82 rroot(0),
83 root(0),
84 style_cascade(cr_cascade_new(NULL, NULL, NULL)),
85 uri(0),
86 base(0),
87 name(0),
88 priv(0), // reset in ctor
89 actionkey(0),
90 modified_id(0),
91 profileManager(0), // deferred until after other initialization
92 router(new Avoid::Router()),
93 perspectives(0),
94 current_persp3d(0),
95 _collection_queue(0),
96 oldSignalsConnected(false)
97 {
98 // Don't use the Consolidate moves optimisation.
99 router->ConsolidateMoves = false;
101 SPDocumentPrivate *p = new SPDocumentPrivate();
103 p->serial = next_serial++;
105 p->iddef = g_hash_table_new(g_direct_hash, g_direct_equal);
106 p->reprdef = g_hash_table_new(g_direct_hash, g_direct_equal);
108 p->resources = g_hash_table_new(g_str_hash, g_str_equal);
110 p->sensitive = FALSE;
111 p->partial = NULL;
112 p->history_size = 0;
113 p->undo = NULL;
114 p->redo = NULL;
115 p->seeking = false;
117 priv = p;
119 // Once things are set, hook in the manager
120 profileManager = new Inkscape::ProfileManager(this);
122 // XXX only for testing!
123 priv->undoStackObservers.add(p->console_output_undo_observer);
124 }
126 SPDocument::~SPDocument() {
127 collectOrphans();
129 // kill/unhook this first
130 if ( profileManager ) {
131 delete profileManager;
132 profileManager = 0;
133 }
135 if (priv) {
136 if (priv->partial) {
137 sp_repr_free_log(priv->partial);
138 priv->partial = NULL;
139 }
141 sp_document_clear_redo(this);
142 sp_document_clear_undo(this);
144 if (root) {
145 root->releaseReferences();
146 sp_object_unref(root);
147 root = NULL;
148 }
150 if (priv->iddef) g_hash_table_destroy(priv->iddef);
151 if (priv->reprdef) g_hash_table_destroy(priv->reprdef);
153 if (rdoc) Inkscape::GC::release(rdoc);
155 /* Free resources */
156 g_hash_table_foreach_remove(priv->resources, sp_document_resource_list_free, this);
157 g_hash_table_destroy(priv->resources);
159 delete priv;
160 priv = NULL;
161 }
163 cr_cascade_unref(style_cascade);
164 style_cascade = NULL;
166 if (name) {
167 g_free(name);
168 name = NULL;
169 }
170 if (base) {
171 g_free(base);
172 base = NULL;
173 }
174 if (uri) {
175 g_free(uri);
176 uri = NULL;
177 }
179 if (modified_id) {
180 gtk_idle_remove(modified_id);
181 modified_id = 0;
182 }
184 if (oldSignalsConnected) {
185 g_signal_handlers_disconnect_by_func(G_OBJECT(INKSCAPE),
186 reinterpret_cast<gpointer>(sp_document_reset_key),
187 static_cast<gpointer>(this));
188 } else {
189 _selection_changed_connection.disconnect();
190 _desktop_activated_connection.disconnect();
191 }
193 if (keepalive) {
194 inkscape_unref();
195 keepalive = FALSE;
196 }
198 if (router) {
199 delete router;
200 router = NULL;
201 }
203 //delete this->_whiteboard_session_manager;
205 }
207 void SPDocument::add_persp3d (Persp3D * const /*persp*/)
208 {
209 SPDefs *defs = SP_ROOT(this->root)->defs;
210 for (SPObject *i = sp_object_first_child(SP_OBJECT(defs)); i != NULL; i = SP_OBJECT_NEXT(i) ) {
211 if (SP_IS_PERSP3D(i)) {
212 g_print ("Encountered a Persp3D in defs\n");
213 }
214 }
216 g_print ("Adding Persp3D to defs\n");
217 persp3d_create_xml_element (this);
218 }
220 void SPDocument::remove_persp3d (Persp3D * const /*persp*/)
221 {
222 // TODO: Delete the repr, maybe perform a check if any boxes are still linked to the perspective.
223 // Anything else?
224 g_print ("Please implement deletion of perspectives here.\n");
225 }
227 void SPDocument::initialize_current_persp3d()
228 {
229 this->current_persp3d = persp3d_document_first_persp(this);
230 if (!this->current_persp3d) {
231 this->current_persp3d = persp3d_create_xml_element(this);
232 }
233 }
235 unsigned long SPDocument::serial() const {
236 return priv->serial;
237 }
239 void SPDocument::queueForOrphanCollection(SPObject *object) {
240 g_return_if_fail(object != NULL);
241 g_return_if_fail(SP_OBJECT_DOCUMENT(object) == this);
243 sp_object_ref(object, NULL);
244 _collection_queue = g_slist_prepend(_collection_queue, object);
245 }
247 void SPDocument::collectOrphans() {
248 while (_collection_queue) {
249 GSList *objects=_collection_queue;
250 _collection_queue = NULL;
251 for ( GSList *iter=objects ; iter ; iter = iter->next ) {
252 SPObject *object=reinterpret_cast<SPObject *>(iter->data);
253 object->collectOrphan();
254 sp_object_unref(object, NULL);
255 }
256 g_slist_free(objects);
257 }
258 }
260 void SPDocument::reset_key (void */*dummy*/)
261 {
262 actionkey = NULL;
263 }
265 SPDocument *
266 sp_document_create(Inkscape::XML::Document *rdoc,
267 gchar const *uri,
268 gchar const *base,
269 gchar const *name,
270 unsigned int keepalive)
271 {
272 SPDocument *document;
273 Inkscape::XML::Node *rroot;
274 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
276 rroot = rdoc->root();
278 document = new SPDocument();
280 document->keepalive = keepalive;
282 document->rdoc = rdoc;
283 document->rroot = rroot;
285 #ifndef WIN32
286 document->uri = prepend_current_dir_if_relative(uri);
287 #else
288 // FIXME: it may be that prepend_current_dir_if_relative works OK on windows too, test!
289 document->uri = uri? g_strdup(uri) : NULL;
290 #endif
292 // base is simply the part of the path before filename; e.g. when running "inkscape ../file.svg" the base is "../"
293 // which is why we use g_get_current_dir() in calculating the abs path above
294 //This is NULL for a new document
295 if (base)
296 document->base = g_strdup(base);
297 else
298 document->base = NULL;
299 document->name = g_strdup(name);
301 document->root = sp_object_repr_build_tree(document, rroot);
303 /* fixme: Not sure about this, but lets assume ::build updates */
304 rroot->setAttribute("inkscape:version", Inkscape::version_string);
305 /* fixme: Again, I moved these here to allow version determining in ::build (Lauris) */
307 /* Quick hack 2 - get default image size into document */
308 if (!rroot->attribute("width")) rroot->setAttribute("width", "100%");
309 if (!rroot->attribute("height")) rroot->setAttribute("height", "100%");
310 /* End of quick hack 2 */
312 /* Quick hack 3 - Set uri attributes */
313 if (uri) {
314 rroot->setAttribute("sodipodi:docname", uri);
315 }
316 /* End of quick hack 3 */
318 /* Eliminate obsolete sodipodi:docbase, for privacy reasons */
319 rroot->setAttribute("sodipodi:docbase", NULL);
321 /* Eliminate any claim to adhere to a profile, as we don't try to */
322 rroot->setAttribute("baseProfile", NULL);
324 // creating namedview
325 if (!sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview")) {
326 // if there's none in the document already,
327 Inkscape::XML::Node *rnew = NULL;
329 rnew = rdoc->createElement("sodipodi:namedview");
330 //rnew->setAttribute("id", "base");
332 // Add namedview data from the preferences
333 // we can't use getAllEntries because this could produce non-SVG doubles
334 Glib::ustring pagecolor = prefs->getString("/template/base/pagecolor");
335 if (!pagecolor.empty()) {
336 rnew->setAttribute("pagecolor", pagecolor.data());
337 }
338 Glib::ustring bordercolor = prefs->getString("/template/base/bordercolor");
339 if (!bordercolor.empty()) {
340 rnew->setAttribute("bordercolor", bordercolor.data());
341 }
342 sp_repr_set_svg_double(rnew, "borderopacity",
343 prefs->getDouble("/template/base/borderopacity", 1.0));
344 sp_repr_set_svg_double(rnew, "objecttolerance",
345 prefs->getDouble("/template/base/objecttolerance", 10.0));
346 sp_repr_set_svg_double(rnew, "gridtolerance",
347 prefs->getDouble("/template/base/gridtolerance", 10.0));
348 sp_repr_set_svg_double(rnew, "guidetolerance",
349 prefs->getDouble("/template/base/guidetolerance", 10.0));
350 sp_repr_set_svg_double(rnew, "inkscape:pageopacity",
351 prefs->getDouble("/template/base/inkscape:pageopacity", 0.0));
352 sp_repr_set_int(rnew, "inkscape:pageshadow",
353 prefs->getInt("/template/base/inkscape:pageshadow", 2));
354 sp_repr_set_int(rnew, "inkscape:window-width",
355 prefs->getInt("/template/base/inkscape:window-width", 640));
356 sp_repr_set_int(rnew, "inkscape:window-height",
357 prefs->getInt("/template/base/inkscape:window-height", 480));
359 // insert into the document
360 rroot->addChild(rnew, NULL);
361 // clean up
362 Inkscape::GC::release(rnew);
363 }
365 /* Defs */
366 if (!SP_ROOT(document->root)->defs) {
367 Inkscape::XML::Node *r;
368 r = rdoc->createElement("svg:defs");
369 rroot->addChild(r, NULL);
370 Inkscape::GC::release(r);
371 g_assert(SP_ROOT(document->root)->defs);
372 }
374 /* Default RDF */
375 rdf_set_defaults( document );
377 if (keepalive) {
378 inkscape_ref();
379 }
381 // Remark: Here, we used to create a "currentpersp3d" element in the document defs.
382 // But this is probably a bad idea since we need to adapt it for every change of selection, which will
383 // completely clutter the undo history. Maybe rather save it to prefs on exit and re-read it on startup?
384 document->initialize_current_persp3d();
386 sp_document_set_undo_sensitive(document, true);
388 // reset undo key when selection changes, so that same-key actions on different objects are not coalesced
389 if (!Inkscape::NSApplication::Application::getNewGui()) {
390 g_signal_connect(G_OBJECT(INKSCAPE), "change_selection",
391 G_CALLBACK(sp_document_reset_key), document);
392 g_signal_connect(G_OBJECT(INKSCAPE), "activate_desktop",
393 G_CALLBACK(sp_document_reset_key), document);
394 document->oldSignalsConnected = true;
395 } else {
396 document->_selection_changed_connection = Inkscape::NSApplication::Editor::connectSelectionChanged (sigc::mem_fun (*document, &SPDocument::reset_key));
397 document->_desktop_activated_connection = Inkscape::NSApplication::Editor::connectDesktopActivated (sigc::mem_fun (*document, &SPDocument::reset_key));
398 document->oldSignalsConnected = false;
399 }
401 return document;
402 }
404 /**
405 * Fetches document from URI, or creates new, if NULL; public document
406 * appears in document list.
407 */
408 SPDocument *
409 sp_document_new(gchar const *uri, unsigned int keepalive, bool make_new)
410 {
411 SPDocument *doc;
412 Inkscape::XML::Document *rdoc;
413 gchar *base = NULL;
414 gchar *name = NULL;
416 if (uri) {
417 Inkscape::XML::Node *rroot;
418 gchar *s, *p;
419 /* Try to fetch repr from file */
420 rdoc = sp_repr_read_file(uri, SP_SVG_NS_URI);
421 /* If file cannot be loaded, return NULL without warning */
422 if (rdoc == NULL) return NULL;
423 rroot = rdoc->root();
424 /* If xml file is not svg, return NULL without warning */
425 /* fixme: destroy document */
426 if (strcmp(rroot->name(), "svg:svg") != 0) return NULL;
427 s = g_strdup(uri);
428 p = strrchr(s, '/');
429 if (p) {
430 name = g_strdup(p + 1);
431 p[1] = '\0';
432 base = g_strdup(s);
433 } else {
434 base = NULL;
435 name = g_strdup(uri);
436 }
437 g_free(s);
438 } else {
439 rdoc = sp_repr_document_new("svg:svg");
440 }
442 if (make_new) {
443 base = NULL;
444 uri = NULL;
445 name = g_strdup_printf(_("New document %d"), ++doc_count);
446 }
448 //# These should be set by now
449 g_assert(name);
451 doc = sp_document_create(rdoc, uri, base, name, keepalive);
453 g_free(base);
454 g_free(name);
456 return doc;
457 }
459 SPDocument *
460 sp_document_new_from_mem(gchar const *buffer, gint length, unsigned int keepalive)
461 {
462 SPDocument *doc;
463 Inkscape::XML::Document *rdoc;
464 Inkscape::XML::Node *rroot;
465 gchar *name;
467 rdoc = sp_repr_read_mem(buffer, length, SP_SVG_NS_URI);
469 /* If it cannot be loaded, return NULL without warning */
470 if (rdoc == NULL) return NULL;
472 rroot = rdoc->root();
473 /* If xml file is not svg, return NULL without warning */
474 /* fixme: destroy document */
475 if (strcmp(rroot->name(), "svg:svg") != 0) return NULL;
477 name = g_strdup_printf(_("Memory document %d"), ++doc_count);
479 doc = sp_document_create(rdoc, NULL, NULL, name, keepalive);
481 return doc;
482 }
484 SPDocument *
485 sp_document_ref(SPDocument *doc)
486 {
487 g_return_val_if_fail(doc != NULL, NULL);
488 Inkscape::GC::anchor(doc);
489 return doc;
490 }
492 SPDocument *
493 sp_document_unref(SPDocument *doc)
494 {
495 g_return_val_if_fail(doc != NULL, NULL);
496 Inkscape::GC::release(doc);
497 return NULL;
498 }
500 gdouble sp_document_width(SPDocument *document)
501 {
502 g_return_val_if_fail(document != NULL, 0.0);
503 g_return_val_if_fail(document->priv != NULL, 0.0);
504 g_return_val_if_fail(document->root != NULL, 0.0);
506 SPRoot *root = SP_ROOT(document->root);
508 if (root->width.unit == SVGLength::PERCENT && root->viewBox_set)
509 return root->viewBox.x1 - root->viewBox.x0;
510 return root->width.computed;
511 }
513 void
514 sp_document_set_width (SPDocument *document, gdouble width, const SPUnit *unit)
515 {
516 SPRoot *root = SP_ROOT(document->root);
518 if (root->width.unit == SVGLength::PERCENT && root->viewBox_set) { // set to viewBox=
519 root->viewBox.x1 = root->viewBox.x0 + sp_units_get_pixels (width, *unit);
520 } else { // set to width=
521 gdouble old_computed = root->width.computed;
522 root->width.computed = sp_units_get_pixels (width, *unit);
523 /* SVG does not support meters as a unit, so we must translate meters to
524 * cm when writing */
525 if (!strcmp(unit->abbr, "m")) {
526 root->width.value = 100*width;
527 root->width.unit = SVGLength::CM;
528 } else {
529 root->width.value = width;
530 root->width.unit = (SVGLength::Unit) sp_unit_get_svg_unit(unit);
531 }
533 if (root->viewBox_set)
534 root->viewBox.x1 = root->viewBox.x0 + (root->width.computed / old_computed) * (root->viewBox.x1 - root->viewBox.x0);
535 }
537 SP_OBJECT (root)->updateRepr();
538 }
540 void sp_document_set_height (SPDocument * document, gdouble height, const SPUnit *unit)
541 {
542 SPRoot *root = SP_ROOT(document->root);
544 if (root->height.unit == SVGLength::PERCENT && root->viewBox_set) { // set to viewBox=
545 root->viewBox.y1 = root->viewBox.y0 + sp_units_get_pixels (height, *unit);
546 } else { // set to height=
547 gdouble old_computed = root->height.computed;
548 root->height.computed = sp_units_get_pixels (height, *unit);
549 /* SVG does not support meters as a unit, so we must translate meters to
550 * cm when writing */
551 if (!strcmp(unit->abbr, "m")) {
552 root->height.value = 100*height;
553 root->height.unit = SVGLength::CM;
554 } else {
555 root->height.value = height;
556 root->height.unit = (SVGLength::Unit) sp_unit_get_svg_unit(unit);
557 }
559 if (root->viewBox_set)
560 root->viewBox.y1 = root->viewBox.y0 + (root->height.computed / old_computed) * (root->viewBox.y1 - root->viewBox.y0);
561 }
563 SP_OBJECT (root)->updateRepr();
564 }
566 gdouble sp_document_height(SPDocument *document)
567 {
568 g_return_val_if_fail(document != NULL, 0.0);
569 g_return_val_if_fail(document->priv != NULL, 0.0);
570 g_return_val_if_fail(document->root != NULL, 0.0);
572 SPRoot *root = SP_ROOT(document->root);
574 if (root->height.unit == SVGLength::PERCENT && root->viewBox_set)
575 return root->viewBox.y1 - root->viewBox.y0;
576 return root->height.computed;
577 }
579 Geom::Point sp_document_dimensions(SPDocument *doc)
580 {
581 return Geom::Point(sp_document_width(doc), sp_document_height(doc));
582 }
584 /**
585 * Given a Geom::Rect that may, for example, correspond to the bbox of an object,
586 * this function fits the canvas to that rect by resizing the canvas
587 * and translating the document root into position.
588 */
589 void SPDocument::fitToRect(Geom::Rect const &rect)
590 {
591 double const w = rect.width();
592 double const h = rect.height();
594 double const old_height = sp_document_height(this);
595 SPUnit const &px(sp_unit_get_by_id(SP_UNIT_PX));
596 sp_document_set_width(this, w, &px);
597 sp_document_set_height(this, h, &px);
599 Geom::Translate const tr(Geom::Point(0, (old_height - h))
600 - to_2geom(rect.min()));
601 SP_GROUP(root)->translateChildItems(tr);
602 SPNamedView *nv = sp_document_namedview(this, 0);
603 if(nv) {
604 Geom::Translate tr2(-rect.min());
605 nv->translateGuides(tr2);
607 // update the viewport so the drawing appears to stay where it was
608 nv->scrollAllDesktops(-tr2[0], tr2[1], false);
609 }
610 }
612 static void
613 do_change_uri(SPDocument *const document, gchar const *const filename, bool const rebase)
614 {
615 g_return_if_fail(document != NULL);
617 gchar *new_base;
618 gchar *new_name;
619 gchar *new_uri;
620 if (filename) {
622 #ifndef WIN32
623 new_uri = prepend_current_dir_if_relative(filename);
624 #else
625 // FIXME: it may be that prepend_current_dir_if_relative works OK on windows too, test!
626 new_uri = g_strdup(filename);
627 #endif
629 new_base = g_path_get_dirname(new_uri);
630 new_name = g_path_get_basename(new_uri);
631 } else {
632 new_uri = g_strdup_printf(_("Unnamed document %d"), ++doc_count);
633 new_base = NULL;
634 new_name = g_strdup(document->uri);
635 }
637 // Update saveable repr attributes.
638 Inkscape::XML::Node *repr = sp_document_repr_root(document);
640 // Changing uri in the document repr must not be not undoable.
641 bool const saved = sp_document_get_undo_sensitive(document);
642 sp_document_set_undo_sensitive(document, false);
644 if (rebase) {
645 Inkscape::XML::rebase_hrefs(document, new_base, true);
646 }
648 repr->setAttribute("sodipodi:docname", document->name);
649 sp_document_set_undo_sensitive(document, saved);
652 g_free(document->name);
653 g_free(document->base);
654 g_free(document->uri);
655 document->name = new_name;
656 document->base = new_base;
657 document->uri = new_uri;
659 document->priv->uri_set_signal.emit(document->uri);
660 }
662 /**
663 * Sets base, name and uri members of \a document. Doesn't update
664 * any relative hrefs in the document: thus, this is primarily for
665 * newly-created documents.
666 *
667 * \see sp_document_change_uri_and_hrefs
668 */
669 void sp_document_set_uri(SPDocument *document, gchar const *filename)
670 {
671 g_return_if_fail(document != NULL);
673 do_change_uri(document, filename, false);
674 }
676 /**
677 * Changes the base, name and uri members of \a document, and updates any
678 * relative hrefs in the document to be relative to the new base.
679 *
680 * \see sp_document_set_uri
681 */
682 void sp_document_change_uri_and_hrefs(SPDocument *document, gchar const *filename)
683 {
684 g_return_if_fail(document != NULL);
686 do_change_uri(document, filename, true);
687 }
689 void
690 sp_document_resized_signal_emit(SPDocument *doc, gdouble width, gdouble height)
691 {
692 g_return_if_fail(doc != NULL);
694 doc->priv->resized_signal.emit(width, height);
695 }
697 sigc::connection SPDocument::connectModified(SPDocument::ModifiedSignal::slot_type slot)
698 {
699 return priv->modified_signal.connect(slot);
700 }
702 sigc::connection SPDocument::connectURISet(SPDocument::URISetSignal::slot_type slot)
703 {
704 return priv->uri_set_signal.connect(slot);
705 }
707 sigc::connection SPDocument::connectResized(SPDocument::ResizedSignal::slot_type slot)
708 {
709 return priv->resized_signal.connect(slot);
710 }
712 sigc::connection
713 SPDocument::connectReconstructionStart(SPDocument::ReconstructionStart::slot_type slot)
714 {
715 return priv->_reconstruction_start_signal.connect(slot);
716 }
718 void
719 SPDocument::emitReconstructionStart(void)
720 {
721 // printf("Starting Reconstruction\n");
722 priv->_reconstruction_start_signal.emit();
723 return;
724 }
726 sigc::connection
727 SPDocument::connectReconstructionFinish(SPDocument::ReconstructionFinish::slot_type slot)
728 {
729 return priv->_reconstruction_finish_signal.connect(slot);
730 }
732 void
733 SPDocument::emitReconstructionFinish(void)
734 {
735 // printf("Finishing Reconstruction\n");
736 priv->_reconstruction_finish_signal.emit();
738 // Reference to the old persp3d object is invalid after reconstruction.
739 initialize_current_persp3d();
741 return;
742 }
744 sigc::connection SPDocument::connectCommit(SPDocument::CommitSignal::slot_type slot)
745 {
746 return priv->commit_signal.connect(slot);
747 }
751 void SPDocument::_emitModified() {
752 static guint const flags = SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG | SP_OBJECT_PARENT_MODIFIED_FLAG;
753 root->emitModified(0);
754 priv->modified_signal.emit(flags);
755 }
757 void SPDocument::bindObjectToId(gchar const *id, SPObject *object) {
758 GQuark idq = g_quark_from_string(id);
760 if (object) {
761 g_assert(g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq)) == NULL);
762 g_hash_table_insert(priv->iddef, GINT_TO_POINTER(idq), object);
763 } else {
764 g_assert(g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq)) != NULL);
765 g_hash_table_remove(priv->iddef, GINT_TO_POINTER(idq));
766 }
768 SPDocumentPrivate::IDChangedSignalMap::iterator pos;
770 pos = priv->id_changed_signals.find(idq);
771 if ( pos != priv->id_changed_signals.end() ) {
772 if (!(*pos).second.empty()) {
773 (*pos).second.emit(object);
774 } else { // discard unused signal
775 priv->id_changed_signals.erase(pos);
776 }
777 }
778 }
780 void
781 SPDocument::addUndoObserver(Inkscape::UndoStackObserver& observer)
782 {
783 this->priv->undoStackObservers.add(observer);
784 }
786 void
787 SPDocument::removeUndoObserver(Inkscape::UndoStackObserver& observer)
788 {
789 this->priv->undoStackObservers.remove(observer);
790 }
792 SPObject *SPDocument::getObjectById(gchar const *id) {
793 g_return_val_if_fail(id != NULL, NULL);
795 GQuark idq = g_quark_from_string(id);
796 return (SPObject*)g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq));
797 }
799 sigc::connection SPDocument::connectIdChanged(gchar const *id,
800 SPDocument::IDChangedSignal::slot_type slot)
801 {
802 return priv->id_changed_signals[g_quark_from_string(id)].connect(slot);
803 }
805 void SPDocument::bindObjectToRepr(Inkscape::XML::Node *repr, SPObject *object) {
806 if (object) {
807 g_assert(g_hash_table_lookup(priv->reprdef, repr) == NULL);
808 g_hash_table_insert(priv->reprdef, repr, object);
809 } else {
810 g_assert(g_hash_table_lookup(priv->reprdef, repr) != NULL);
811 g_hash_table_remove(priv->reprdef, repr);
812 }
813 }
815 SPObject *SPDocument::getObjectByRepr(Inkscape::XML::Node *repr) {
816 g_return_val_if_fail(repr != NULL, NULL);
817 return (SPObject*)g_hash_table_lookup(priv->reprdef, repr);
818 }
820 Glib::ustring SPDocument::getLanguage() {
821 gchar const *document_language = rdf_get_work_entity(this, rdf_find_entity("language"));
822 if (document_language) {
823 while (isspace(*document_language))
824 document_language++;
825 }
826 if ( !document_language || 0 == *document_language) {
827 // retrieve system language
828 document_language = getenv("LC_ALL");
829 if ( NULL == document_language || *document_language == 0 ) {
830 document_language = getenv ("LC_MESSAGES");
831 }
832 if ( NULL == document_language || *document_language == 0 ) {
833 document_language = getenv ("LANG");
834 }
836 if ( NULL != document_language ) {
837 const char *pos = strchr(document_language, '_');
838 if ( NULL != pos ) {
839 return Glib::ustring(document_language, pos - document_language);
840 }
841 }
842 }
844 if ( NULL == document_language )
845 return Glib::ustring();
846 return document_language;
847 }
849 /* Object modification root handler */
851 void
852 sp_document_request_modified(SPDocument *doc)
853 {
854 if (!doc->modified_id) {
855 doc->modified_id = gtk_idle_add_priority(SP_DOCUMENT_UPDATE_PRIORITY, sp_document_idle_handler, doc);
856 }
857 }
859 void
860 sp_document_setup_viewport (SPDocument *doc, SPItemCtx *ctx)
861 {
862 ctx->ctx.flags = 0;
863 ctx->i2doc = Geom::identity();
864 /* Set up viewport in case svg has it defined as percentages */
865 if (SP_ROOT(doc->root)->viewBox_set) { // if set, take from viewBox
866 ctx->vp.x0 = SP_ROOT(doc->root)->viewBox.x0;
867 ctx->vp.y0 = SP_ROOT(doc->root)->viewBox.y0;
868 ctx->vp.x1 = SP_ROOT(doc->root)->viewBox.x1;
869 ctx->vp.y1 = SP_ROOT(doc->root)->viewBox.y1;
870 } else { // as a last resort, set size to A4
871 ctx->vp.x0 = 0.0;
872 ctx->vp.y0 = 0.0;
873 ctx->vp.x1 = 210 * PX_PER_MM;
874 ctx->vp.y1 = 297 * PX_PER_MM;
875 }
876 ctx->i2vp = Geom::identity();
877 }
879 /**
880 * Tries to update the document state based on the modified and
881 * "update required" flags, and return true if the document has
882 * been brought fully up to date.
883 */
884 bool
885 SPDocument::_updateDocument()
886 {
887 /* Process updates */
888 if (this->root->uflags || this->root->mflags) {
889 if (this->root->uflags) {
890 SPItemCtx ctx;
891 sp_document_setup_viewport (this, &ctx);
893 bool saved = sp_document_get_undo_sensitive(this);
894 sp_document_set_undo_sensitive(this, false);
896 this->root->updateDisplay((SPCtx *)&ctx, 0);
898 sp_document_set_undo_sensitive(this, saved);
899 }
900 this->_emitModified();
901 }
903 return !(this->root->uflags || this->root->mflags);
904 }
907 /**
908 * Repeatedly works on getting the document updated, since sometimes
909 * it takes more than one pass to get the document updated. But it
910 * usually should not take more than a few loops, and certainly never
911 * more than 64 iterations. So we bail out if we hit 64 iterations,
912 * since this typically indicates we're stuck in an update loop.
913 */
914 gint
915 sp_document_ensure_up_to_date(SPDocument *doc)
916 {
917 int counter = 64;
918 while (!doc->_updateDocument()) {
919 if (counter == 0) {
920 g_warning("More than 64 iteration while updating document '%s'", doc->uri? doc->uri:"<unknown URI, probably clipboard>");
921 break;
922 }
923 counter--;
924 }
926 if (doc->modified_id) {
927 /* Remove handler */
928 gtk_idle_remove(doc->modified_id);
929 doc->modified_id = 0;
930 }
931 return counter>0;
932 }
934 /**
935 * An idle handler to update the document. Returns true if
936 * the document needs further updates.
937 */
938 static gint
939 sp_document_idle_handler(gpointer data)
940 {
941 SPDocument *doc = static_cast<SPDocument *>(data);
942 if (doc->_updateDocument()) {
943 doc->modified_id = 0;
944 return false;
945 } else {
946 return true;
947 }
948 }
950 static bool is_within(Geom::Rect const &area, Geom::Rect const &box)
951 {
952 return area.contains(box);
953 }
955 static bool overlaps(Geom::Rect const &area, Geom::Rect const &box)
956 {
957 return area.intersects(box);
958 }
960 static GSList *find_items_in_area(GSList *s, SPGroup *group, unsigned int dkey, Geom::Rect const &area,
961 bool (*test)(Geom::Rect const &, Geom::Rect const &), bool take_insensitive = false)
962 {
963 g_return_val_if_fail(SP_IS_GROUP(group), s);
965 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
966 if (!SP_IS_ITEM(o)) {
967 continue;
968 }
969 if (SP_IS_GROUP(o) && SP_GROUP(o)->effectiveLayerMode(dkey) == SPGroup::LAYER ) {
970 s = find_items_in_area(s, SP_GROUP(o), dkey, area, test);
971 } else {
972 SPItem *child = SP_ITEM(o);
973 Geom::OptRect box = sp_item_bbox_desktop(child);
974 if ( box && test(area, *box) && (take_insensitive || child->isVisibleAndUnlocked(dkey))) {
975 s = g_slist_append(s, child);
976 }
977 }
978 }
980 return s;
981 }
983 /**
984 Returns true if an item is among the descendants of group (recursively).
985 */
986 bool item_is_in_group(SPItem *item, SPGroup *group)
987 {
988 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
989 if (!SP_IS_ITEM(o)) continue;
990 if (SP_ITEM(o) == item)
991 return true;
992 if (SP_IS_GROUP(o))
993 if (item_is_in_group(item, SP_GROUP(o)))
994 return true;
995 }
996 return false;
997 }
999 /**
1000 Returns the bottommost item from the list which is at the point, or NULL if none.
1001 */
1002 SPItem*
1003 sp_document_item_from_list_at_point_bottom(unsigned int dkey, SPGroup *group, GSList const *list,
1004 Geom::Point const p, bool take_insensitive)
1005 {
1006 g_return_val_if_fail(group, NULL);
1007 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1008 gdouble delta = prefs->getDouble("/options/cursortolerance/value", 1.0);
1010 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
1012 if (!SP_IS_ITEM(o)) continue;
1014 SPItem *item = SP_ITEM(o);
1015 NRArenaItem *arenaitem = sp_item_get_arenaitem(item, dkey);
1016 if (arenaitem && nr_arena_item_invoke_pick(arenaitem, p, delta, 1) != NULL
1017 && (take_insensitive || item->isVisibleAndUnlocked(dkey))) {
1018 if (g_slist_find((GSList *) list, item) != NULL)
1019 return item;
1020 }
1022 if (SP_IS_GROUP(o)) {
1023 SPItem *found = sp_document_item_from_list_at_point_bottom(dkey, SP_GROUP(o), list, p, take_insensitive);
1024 if (found)
1025 return found;
1026 }
1028 }
1029 return NULL;
1030 }
1032 /**
1033 Returns the topmost (in z-order) item from the descendants of group (recursively) which
1034 is at the point p, or NULL if none. Honors into_groups on whether to recurse into
1035 non-layer groups or not. Honors take_insensitive on whether to return insensitive
1036 items. If upto != NULL, then if item upto is encountered (at any level), stops searching
1037 upwards in z-order and returns what it has found so far (i.e. the found item is
1038 guaranteed to be lower than upto).
1039 */
1040 SPItem*
1041 find_item_at_point(unsigned int dkey, SPGroup *group, Geom::Point const p, gboolean into_groups, bool take_insensitive = false, SPItem *upto = NULL)
1042 {
1043 SPItem *seen = NULL, *newseen = NULL;
1044 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1045 gdouble delta = prefs->getDouble("/options/cursortolerance/value", 1.0);
1047 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
1048 if (!SP_IS_ITEM(o)) continue;
1050 if (upto && SP_ITEM(o) == upto)
1051 break;
1053 if (SP_IS_GROUP(o) && (SP_GROUP(o)->effectiveLayerMode(dkey) == SPGroup::LAYER || into_groups)) {
1054 // if nothing found yet, recurse into the group
1055 newseen = find_item_at_point(dkey, SP_GROUP(o), p, into_groups, take_insensitive, upto);
1056 if (newseen) {
1057 seen = newseen;
1058 newseen = NULL;
1059 }
1061 if (item_is_in_group(upto, SP_GROUP(o)))
1062 break;
1064 } else {
1065 SPItem *child = SP_ITEM(o);
1066 NRArenaItem *arenaitem = sp_item_get_arenaitem(child, dkey);
1068 // seen remembers the last (topmost) of items pickable at this point
1069 if (arenaitem && nr_arena_item_invoke_pick(arenaitem, p, delta, 1) != NULL
1070 && (take_insensitive || child->isVisibleAndUnlocked(dkey))) {
1071 seen = child;
1072 }
1073 }
1074 }
1075 return seen;
1076 }
1078 /**
1079 Returns the topmost non-layer group from the descendants of group which is at point
1080 p, or NULL if none. Recurses into layers but not into groups.
1081 */
1082 SPItem*
1083 find_group_at_point(unsigned int dkey, SPGroup *group, Geom::Point const p)
1084 {
1085 SPItem *seen = NULL;
1086 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1087 gdouble delta = prefs->getDouble("/options/cursortolerance/value", 1.0);
1089 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
1090 if (!SP_IS_ITEM(o)) continue;
1091 if (SP_IS_GROUP(o) && SP_GROUP(o)->effectiveLayerMode(dkey) == SPGroup::LAYER) {
1092 SPItem *newseen = find_group_at_point(dkey, SP_GROUP(o), p);
1093 if (newseen) {
1094 seen = newseen;
1095 }
1096 }
1097 if (SP_IS_GROUP(o) && SP_GROUP(o)->effectiveLayerMode(dkey) != SPGroup::LAYER ) {
1098 SPItem *child = SP_ITEM(o);
1099 NRArenaItem *arenaitem = sp_item_get_arenaitem(child, dkey);
1101 // seen remembers the last (topmost) of groups pickable at this point
1102 if (arenaitem && nr_arena_item_invoke_pick(arenaitem, p, delta, 1) != NULL) {
1103 seen = child;
1104 }
1105 }
1106 }
1107 return seen;
1108 }
1110 /*
1111 * Return list of items, contained in box
1112 *
1113 * Assumes box is normalized (and g_asserts it!)
1114 *
1115 */
1117 GSList *sp_document_items_in_box(SPDocument *document, unsigned int dkey, Geom::Rect const &box)
1118 {
1119 g_return_val_if_fail(document != NULL, NULL);
1120 g_return_val_if_fail(document->priv != NULL, NULL);
1122 return find_items_in_area(NULL, SP_GROUP(document->root), dkey, box, is_within);
1123 }
1125 /*
1126 * Return list of items, that the parts of the item contained in box
1127 *
1128 * Assumes box is normalized (and g_asserts it!)
1129 *
1130 */
1132 GSList *sp_document_partial_items_in_box(SPDocument *document, unsigned int dkey, Geom::Rect const &box)
1133 {
1134 g_return_val_if_fail(document != NULL, NULL);
1135 g_return_val_if_fail(document->priv != NULL, NULL);
1137 return find_items_in_area(NULL, SP_GROUP(document->root), dkey, box, overlaps);
1138 }
1140 GSList *
1141 sp_document_items_at_points(SPDocument *document, unsigned const key, std::vector<Geom::Point> points)
1142 {
1143 GSList *items = NULL;
1144 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1146 // When picking along the path, we don't want small objects close together
1147 // (such as hatching strokes) to obscure each other by their deltas,
1148 // so we temporarily set delta to a small value
1149 gdouble saved_delta = prefs->getDouble("/options/cursortolerance/value", 1.0);
1150 prefs->setDouble("/options/cursortolerance/value", 0.25);
1152 for(unsigned int i = 0; i < points.size(); i++) {
1153 SPItem *item = sp_document_item_at_point(document, key, points[i],
1154 false, NULL);
1155 if (item && !g_slist_find(items, item))
1156 items = g_slist_prepend (items, item);
1157 }
1159 // and now we restore it back
1160 prefs->setDouble("/options/cursortolerance/value", saved_delta);
1162 return items;
1163 }
1165 SPItem *
1166 sp_document_item_at_point(SPDocument *document, unsigned const key, Geom::Point const p,
1167 gboolean const into_groups, SPItem *upto)
1168 {
1169 g_return_val_if_fail(document != NULL, NULL);
1170 g_return_val_if_fail(document->priv != NULL, NULL);
1172 return find_item_at_point(key, SP_GROUP(document->root), p, into_groups, false, upto);
1173 }
1175 SPItem*
1176 sp_document_group_at_point(SPDocument *document, unsigned int key, Geom::Point const p)
1177 {
1178 g_return_val_if_fail(document != NULL, NULL);
1179 g_return_val_if_fail(document->priv != NULL, NULL);
1181 return find_group_at_point(key, SP_GROUP(document->root), p);
1182 }
1185 /* Resource management */
1187 gboolean
1188 sp_document_add_resource(SPDocument *document, gchar const *key, SPObject *object)
1189 {
1190 GSList *rlist;
1191 GQuark q = g_quark_from_string(key);
1193 g_return_val_if_fail(document != NULL, FALSE);
1194 g_return_val_if_fail(key != NULL, FALSE);
1195 g_return_val_if_fail(*key != '\0', FALSE);
1196 g_return_val_if_fail(object != NULL, FALSE);
1197 g_return_val_if_fail(SP_IS_OBJECT(object), FALSE);
1199 if (SP_OBJECT_IS_CLONED(object))
1200 return FALSE;
1202 rlist = (GSList*)g_hash_table_lookup(document->priv->resources, key);
1203 g_return_val_if_fail(!g_slist_find(rlist, object), FALSE);
1204 rlist = g_slist_prepend(rlist, object);
1205 g_hash_table_insert(document->priv->resources, (gpointer) key, rlist);
1207 document->priv->resources_changed_signals[q].emit();
1209 return TRUE;
1210 }
1212 gboolean
1213 sp_document_remove_resource(SPDocument *document, gchar const *key, SPObject *object)
1214 {
1215 GSList *rlist;
1216 GQuark q = g_quark_from_string(key);
1218 g_return_val_if_fail(document != NULL, FALSE);
1219 g_return_val_if_fail(key != NULL, FALSE);
1220 g_return_val_if_fail(*key != '\0', FALSE);
1221 g_return_val_if_fail(object != NULL, FALSE);
1222 g_return_val_if_fail(SP_IS_OBJECT(object), FALSE);
1224 if (SP_OBJECT_IS_CLONED(object))
1225 return FALSE;
1227 rlist = (GSList*)g_hash_table_lookup(document->priv->resources, key);
1228 g_return_val_if_fail(rlist != NULL, FALSE);
1229 g_return_val_if_fail(g_slist_find(rlist, object), FALSE);
1230 rlist = g_slist_remove(rlist, object);
1231 g_hash_table_insert(document->priv->resources, (gpointer) key, rlist);
1233 document->priv->resources_changed_signals[q].emit();
1235 return TRUE;
1236 }
1238 GSList const *
1239 sp_document_get_resource_list(SPDocument *document, gchar const *key)
1240 {
1241 g_return_val_if_fail(document != NULL, NULL);
1242 g_return_val_if_fail(key != NULL, NULL);
1243 g_return_val_if_fail(*key != '\0', NULL);
1245 return (GSList*)g_hash_table_lookup(document->priv->resources, key);
1246 }
1248 sigc::connection sp_document_resources_changed_connect(SPDocument *document,
1249 gchar const *key,
1250 SPDocument::ResourcesChangedSignal::slot_type slot)
1251 {
1252 GQuark q = g_quark_from_string(key);
1253 return document->priv->resources_changed_signals[q].connect(slot);
1254 }
1256 /* Helpers */
1258 gboolean
1259 sp_document_resource_list_free(gpointer /*key*/, gpointer value, gpointer /*data*/)
1260 {
1261 g_slist_free((GSList *) value);
1262 return TRUE;
1263 }
1265 unsigned int
1266 count_objects_recursive(SPObject *obj, unsigned int count)
1267 {
1268 count++; // obj itself
1270 for (SPObject *i = sp_object_first_child(obj); i != NULL; i = SP_OBJECT_NEXT(i)) {
1271 count = count_objects_recursive(i, count);
1272 }
1274 return count;
1275 }
1277 unsigned int
1278 objects_in_document(SPDocument *document)
1279 {
1280 return count_objects_recursive(SP_DOCUMENT_ROOT(document), 0);
1281 }
1283 void
1284 vacuum_document_recursive(SPObject *obj)
1285 {
1286 if (SP_IS_DEFS(obj)) {
1287 for (SPObject *def = obj->firstChild(); def; def = SP_OBJECT_NEXT(def)) {
1288 /* fixme: some inkscape-internal nodes in the future might not be collectable */
1289 def->requestOrphanCollection();
1290 }
1291 } else {
1292 for (SPObject *i = sp_object_first_child(obj); i != NULL; i = SP_OBJECT_NEXT(i)) {
1293 vacuum_document_recursive(i);
1294 }
1295 }
1296 }
1298 unsigned int
1299 vacuum_document(SPDocument *document)
1300 {
1301 unsigned int start = objects_in_document(document);
1302 unsigned int end;
1303 unsigned int newend = start;
1305 unsigned int iterations = 0;
1307 do {
1308 end = newend;
1310 vacuum_document_recursive(SP_DOCUMENT_ROOT(document));
1311 document->collectOrphans();
1312 iterations++;
1314 newend = objects_in_document(document);
1316 } while (iterations < 100 && newend < end);
1318 return start - newend;
1319 }
1321 bool SPDocument::isSeeking() const {
1322 return priv->seeking;
1323 }
1326 /*
1327 Local Variables:
1328 mode:c++
1329 c-file-style:"stroustrup"
1330 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1331 indent-tabs-mode:nil
1332 fill-column:99
1333 End:
1334 */
1335 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :