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 "application/application.h"
42 #include "application/editor.h"
43 #include "libnr/nr-matrix-fns.h"
44 #include "xml/repr.h"
45 #include "helper/units.h"
46 #include "inkscape-private.h"
47 #include "inkscape_version.h"
48 #include "sp-object-repr.h"
49 #include "document-private.h"
50 #include "dir-util.h"
51 #include "unit-constants.h"
52 #include "prefs-utils.h"
53 #include "libavoid/router.h"
54 #include "libnr/nr-rect.h"
55 #include "sp-item-group.h"
56 #include "perspective3d.h"
57 #include "profile-manager.h"
59 #include "display/nr-arena-item.h"
61 #include "dialogs/rdf.h"
63 #define A4_WIDTH_STR "210mm"
64 #define A4_HEIGHT_STR "297mm"
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 SPDocumentPrivate *p;
80 keepalive = FALSE;
81 virgin = TRUE;
83 modified_id = 0;
85 rdoc = NULL;
86 rroot = NULL;
87 root = NULL;
88 style_cascade = cr_cascade_new(NULL, NULL, NULL);
90 uri = NULL;
91 base = NULL;
92 name = NULL;
94 _collection_queue = NULL;
96 // Initialise instance of connector router.
97 router = new Avoid::Router();
98 // Don't use the Consolidate moves optimisation.
99 router->ConsolidateMoves = false;
101 perspectives = NULL;
103 /* Create an initial perspective, make it current and append it to the list of existing perspectives */
104 current_perspective = new Box3D::Perspective3D (
105 // VP in x-direction
106 Box3D::VanishingPoint( NR::Point(-50.0, 600.0),
107 NR::Point( -1.0, 0.0), Box3D::VP_FINITE),
108 // VP in y-direction
109 Box3D::VanishingPoint( NR::Point(500.0,1000.0),
110 NR::Point( 0.0, 1.0), Box3D::VP_INFINITE),
111 // VP in z-direction
112 Box3D::VanishingPoint( NR::Point(700.0, 600.0),
113 NR::Point(sqrt(3.0),1.0), Box3D::VP_FINITE),
114 this);
116 add_perspective (current_perspective);
118 p = new SPDocumentPrivate();
120 p->serial = next_serial++;
122 p->iddef = g_hash_table_new(g_direct_hash, g_direct_equal);
123 p->reprdef = g_hash_table_new(g_direct_hash, g_direct_equal);
125 p->resources = g_hash_table_new(g_str_hash, g_str_equal);
127 p->sensitive = FALSE;
128 p->partial = NULL;
129 p->history_size = 0;
130 p->undo = NULL;
131 p->redo = NULL;
132 p->seeking = false;
134 priv = p;
136 // Once things are set, hook in the manager
137 profileManager = new Inkscape::ProfileManager(this);
139 // XXX only for testing!
140 priv->undoStackObservers.add(p->console_output_undo_observer);
141 }
143 SPDocument::~SPDocument() {
144 collectOrphans();
146 // kill/unhook this first
147 if ( profileManager ) {
148 delete profileManager;
149 profileManager = 0;
150 }
152 if (priv) {
153 if (priv->partial) {
154 sp_repr_free_log(priv->partial);
155 priv->partial = NULL;
156 }
158 sp_document_clear_redo(this);
159 sp_document_clear_undo(this);
161 if (root) {
162 root->releaseReferences();
163 sp_object_unref(root);
164 root = NULL;
165 }
167 if (priv->iddef) g_hash_table_destroy(priv->iddef);
168 if (priv->reprdef) g_hash_table_destroy(priv->reprdef);
170 if (rdoc) Inkscape::GC::release(rdoc);
172 /* Free resources */
173 g_hash_table_foreach_remove(priv->resources, sp_document_resource_list_free, this);
174 g_hash_table_destroy(priv->resources);
176 delete priv;
177 priv = NULL;
178 }
180 cr_cascade_unref(style_cascade);
181 style_cascade = NULL;
183 if (name) {
184 g_free(name);
185 name = NULL;
186 }
187 if (base) {
188 g_free(base);
189 base = NULL;
190 }
191 if (uri) {
192 g_free(uri);
193 uri = NULL;
194 }
196 if (modified_id) {
197 gtk_idle_remove(modified_id);
198 modified_id = 0;
199 }
201 _selection_changed_connection.disconnect();
202 _desktop_activated_connection.disconnect();
204 if (keepalive) {
205 inkscape_unref();
206 keepalive = FALSE;
207 }
209 if (router) {
210 delete router;
211 router = NULL;
212 }
214 //delete this->_whiteboard_session_manager;
216 current_perspective = NULL;
217 // TODO: Do we have to delete the perspectives?
218 /***
219 for (GSList *i = perspectives; i != NULL; ++i) {
220 delete ((Box3D::Perspective3D *) i->data);
221 }
222 g_slist_free (perspectives);
223 ***/
224 }
226 void SPDocument::add_perspective (Box3D::Perspective3D * const persp)
227 {
228 // FIXME: Should we handle the case that the perspectives have equal VPs but are not identical?
229 // If so, we need to take care of relinking the boxes, etc.
230 if (persp == NULL || g_slist_find (perspectives, persp)) return;
231 perspectives = g_slist_prepend (perspectives, persp);
232 }
234 void SPDocument::remove_perspective (Box3D::Perspective3D * const persp)
235 {
236 if (persp == NULL || !g_slist_find (perspectives, persp)) return;
237 perspectives = g_slist_remove (perspectives, persp);
238 }
240 // find an existing perspective whose VPs are equal to those of persp
241 Box3D::Perspective3D * SPDocument::find_perspective (const Box3D::Perspective3D * persp)
242 {
243 for (GSList *p = perspectives; p != NULL; p = p->next) {
244 if (*((Box3D::Perspective3D *) p->data) == *persp) {
245 return ((Box3D::Perspective3D *) p->data);
246 }
247 }
248 return NULL; // perspective was not found
249 }
251 Box3D::Perspective3D * SPDocument::get_persp_of_box (const SP3DBox *box)
252 {
253 for (GSList *p = perspectives; p != NULL; p = p->next) {
254 if (((Box3D::Perspective3D *) p->data)->has_box (box))
255 return (Box3D::Perspective3D *) p->data;
256 }
257 g_warning ("Stray 3D box!\n");
258 g_assert_not_reached();
259 }
261 Box3D::Perspective3D * SPDocument::get_persp_of_VP (const Box3D::VanishingPoint *vp)
262 {
263 Box3D::Perspective3D *persp;
264 for (GSList *p = perspectives; p != NULL; p = p->next) {
265 persp = (Box3D::Perspective3D *) p->data;
266 // we compare the pointers, not the position/state of the VPs; is this correct?
267 if (persp->get_vanishing_point (Box3D::X) == vp ||
268 persp->get_vanishing_point (Box3D::Y) == vp ||
269 persp->get_vanishing_point (Box3D::Z) == vp)
270 return persp;
271 }
273 g_warning ("Stray vanishing point!\n");
274 g_assert_not_reached();
275 }
277 unsigned long SPDocument::serial() const {
278 return priv->serial;
279 }
281 void SPDocument::queueForOrphanCollection(SPObject *object) {
282 g_return_if_fail(object != NULL);
283 g_return_if_fail(SP_OBJECT_DOCUMENT(object) == this);
285 sp_object_ref(object, NULL);
286 _collection_queue = g_slist_prepend(_collection_queue, object);
287 }
289 void SPDocument::collectOrphans() {
290 while (_collection_queue) {
291 GSList *objects=_collection_queue;
292 _collection_queue = NULL;
293 for ( GSList *iter=objects ; iter ; iter = iter->next ) {
294 SPObject *object=reinterpret_cast<SPObject *>(iter->data);
295 object->collectOrphan();
296 sp_object_unref(object, NULL);
297 }
298 g_slist_free(objects);
299 }
300 }
302 void SPDocument::reset_key (void */*dummy*/)
303 {
304 actionkey = NULL;
305 }
307 SPDocument *
308 sp_document_create(Inkscape::XML::Document *rdoc,
309 gchar const *uri,
310 gchar const *base,
311 gchar const *name,
312 unsigned int keepalive)
313 {
314 SPDocument *document;
315 Inkscape::XML::Node *rroot;
316 Inkscape::Version sodipodi_version;
318 rroot = rdoc->root();
320 document = new SPDocument();
322 document->keepalive = keepalive;
324 document->rdoc = rdoc;
325 document->rroot = rroot;
327 #ifndef WIN32
328 prepend_current_dir_if_relative(&(document->uri), uri);
329 #else
330 // FIXME: it may be that prepend_current_dir_if_relative works OK on windows too, test!
331 document->uri = uri? g_strdup(uri) : NULL;
332 #endif
334 // base is simply the part of the path before filename; e.g. when running "inkscape ../file.svg" the base is "../"
335 // which is why we use g_get_current_dir() in calculating the abs path above
336 //This is NULL for a new document
337 if (base)
338 document->base = g_strdup(base);
339 else
340 document->base = NULL;
341 document->name = g_strdup(name);
343 document->root = sp_object_repr_build_tree(document, rroot);
345 sodipodi_version = SP_ROOT(document->root)->version.sodipodi;
347 /* fixme: Not sure about this, but lets assume ::build updates */
348 rroot->setAttribute("sodipodi:version", SODIPODI_VERSION);
349 rroot->setAttribute("inkscape:version", INKSCAPE_VERSION);
350 /* fixme: Again, I moved these here to allow version determining in ::build (Lauris) */
352 /* Quick hack 2 - get default image size into document */
353 if (!rroot->attribute("width")) rroot->setAttribute("width", A4_WIDTH_STR);
354 if (!rroot->attribute("height")) rroot->setAttribute("height", A4_HEIGHT_STR);
355 /* End of quick hack 2 */
357 /* Quick hack 3 - Set uri attributes */
358 if (uri) {
359 rroot->setAttribute("sodipodi:docname", uri);
360 }
361 /* End of quick hack 3 */
363 // creating namedview
364 if (!sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview")) {
365 // if there's none in the document already,
366 Inkscape::XML::Node *r = NULL;
367 Inkscape::XML::Node *rnew = NULL;
368 r = inkscape_get_repr(INKSCAPE, "template.base");
369 // see if there's a template with id="base" in the preferences
370 if (!r) {
371 // if there's none, create an empty element
372 rnew = rdoc->createElement("sodipodi:namedview");
373 rnew->setAttribute("id", "base");
374 } else {
375 // otherwise, take from preferences
376 rnew = r->duplicate(rroot->document());
377 }
378 // insert into the document
379 rroot->addChild(rnew, NULL);
380 // clean up
381 Inkscape::GC::release(rnew);
382 }
384 /* Defs */
385 if (!SP_ROOT(document->root)->defs) {
386 Inkscape::XML::Node *r;
387 r = rdoc->createElement("svg:defs");
388 rroot->addChild(r, NULL);
389 Inkscape::GC::release(r);
390 g_assert(SP_ROOT(document->root)->defs);
391 }
393 /* Default RDF */
394 rdf_set_defaults( document );
396 if (keepalive) {
397 inkscape_ref();
398 }
400 sp_document_set_undo_sensitive(document, true);
402 // reset undo key when selection changes, so that same-key actions on different objects are not coalesced
403 if (!Inkscape::NSApplication::Application::getNewGui()) {
404 g_signal_connect(G_OBJECT(INKSCAPE), "change_selection",
405 G_CALLBACK(sp_document_reset_key), document);
406 g_signal_connect(G_OBJECT(INKSCAPE), "activate_desktop",
407 G_CALLBACK(sp_document_reset_key), document);
408 } else {
409 document->_selection_changed_connection = Inkscape::NSApplication::Editor::connectSelectionChanged (sigc::mem_fun (*document, &SPDocument::reset_key));
410 document->_desktop_activated_connection = Inkscape::NSApplication::Editor::connectDesktopActivated (sigc::mem_fun (*document, &SPDocument::reset_key));
411 }
413 return document;
414 }
416 /**
417 * Fetches document from URI, or creates new, if NULL; public document
418 * appears in document list.
419 */
420 SPDocument *
421 sp_document_new(gchar const *uri, unsigned int keepalive, bool make_new)
422 {
423 SPDocument *doc;
424 Inkscape::XML::Document *rdoc;
425 gchar *base = NULL;
426 gchar *name = NULL;
428 if (uri) {
429 Inkscape::XML::Node *rroot;
430 gchar *s, *p;
431 /* Try to fetch repr from file */
432 rdoc = sp_repr_read_file(uri, SP_SVG_NS_URI);
433 /* If file cannot be loaded, return NULL without warning */
434 if (rdoc == NULL) return NULL;
435 rroot = rdoc->root();
436 /* If xml file is not svg, return NULL without warning */
437 /* fixme: destroy document */
438 if (strcmp(rroot->name(), "svg:svg") != 0) return NULL;
439 s = g_strdup(uri);
440 p = strrchr(s, '/');
441 if (p) {
442 name = g_strdup(p + 1);
443 p[1] = '\0';
444 base = g_strdup(s);
445 } else {
446 base = NULL;
447 name = g_strdup(uri);
448 }
449 g_free(s);
450 } else {
451 rdoc = sp_repr_document_new("svg:svg");
452 }
454 if (make_new) {
455 base = NULL;
456 uri = NULL;
457 name = g_strdup_printf(_("New document %d"), ++doc_count);
458 }
460 //# These should be set by now
461 g_assert(name);
463 doc = sp_document_create(rdoc, uri, base, name, keepalive);
465 g_free(base);
466 g_free(name);
468 return doc;
469 }
471 SPDocument *
472 sp_document_new_from_mem(gchar const *buffer, gint length, unsigned int keepalive)
473 {
474 SPDocument *doc;
475 Inkscape::XML::Document *rdoc;
476 Inkscape::XML::Node *rroot;
477 gchar *name;
479 rdoc = sp_repr_read_mem(buffer, length, SP_SVG_NS_URI);
481 /* If it cannot be loaded, return NULL without warning */
482 if (rdoc == NULL) return NULL;
484 rroot = rdoc->root();
485 /* If xml file is not svg, return NULL without warning */
486 /* fixme: destroy document */
487 if (strcmp(rroot->name(), "svg:svg") != 0) return NULL;
489 name = g_strdup_printf(_("Memory document %d"), ++doc_count);
491 doc = sp_document_create(rdoc, NULL, NULL, name, keepalive);
493 return doc;
494 }
496 SPDocument *
497 sp_document_ref(SPDocument *doc)
498 {
499 g_return_val_if_fail(doc != NULL, NULL);
500 Inkscape::GC::anchor(doc);
501 return doc;
502 }
504 SPDocument *
505 sp_document_unref(SPDocument *doc)
506 {
507 g_return_val_if_fail(doc != NULL, NULL);
508 Inkscape::GC::release(doc);
509 return NULL;
510 }
512 gdouble sp_document_width(SPDocument *document)
513 {
514 g_return_val_if_fail(document != NULL, 0.0);
515 g_return_val_if_fail(document->priv != NULL, 0.0);
516 g_return_val_if_fail(document->root != NULL, 0.0);
518 return SP_ROOT(document->root)->width.computed;
519 }
521 void
522 sp_document_set_width (SPDocument *document, gdouble width, const SPUnit *unit)
523 {
524 SPRoot *root = SP_ROOT(document->root);
526 if (root->width.unit == SVGLength::PERCENT && root->viewBox_set) { // set to viewBox=
527 root->viewBox.x1 = root->viewBox.x0 + sp_units_get_pixels (width, *unit);
528 } else { // set to width=
529 root->width.computed = sp_units_get_pixels (width, *unit);
530 /* SVG does not support meters as a unit, so we must translate meters to
531 * cm when writing */
532 if (!strcmp(unit->abbr, "m")) {
533 root->width.value = 100*width;
534 root->width.unit = SVGLength::CM;
535 } else {
536 root->width.value = width;
537 root->width.unit = (SVGLength::Unit) sp_unit_get_svg_unit(unit);
538 }
539 }
541 SP_OBJECT (root)->updateRepr();
542 }
544 void sp_document_set_height (SPDocument * document, gdouble height, const SPUnit *unit)
545 {
546 SPRoot *root = SP_ROOT(document->root);
548 if (root->height.unit == SVGLength::PERCENT && root->viewBox_set) { // set to viewBox=
549 root->viewBox.y1 = root->viewBox.y0 + sp_units_get_pixels (height, *unit);
550 } else { // set to height=
551 root->height.computed = sp_units_get_pixels (height, *unit);
552 /* SVG does not support meters as a unit, so we must translate meters to
553 * cm when writing */
554 if (!strcmp(unit->abbr, "m")) {
555 root->height.value = 100*height;
556 root->height.unit = SVGLength::CM;
557 } else {
558 root->height.value = height;
559 root->height.unit = (SVGLength::Unit) sp_unit_get_svg_unit(unit);
560 }
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 return SP_ROOT(document->root)->height.computed;
573 }
575 /**
576 * Given an NR::Rect that may, for example, correspond to the bbox of an object,
577 * this function fits the canvas to that rect by resizing the canvas
578 * and translating the document root into position.
579 */
580 void SPDocument::fitToRect(NR::Rect const &rect)
581 {
582 g_return_if_fail(!rect.isEmpty());
584 using NR::X; using NR::Y;
585 double const w = rect.extent(X);
586 double const h = rect.extent(Y);
588 double const old_height = sp_document_height(this);
589 SPUnit const &px(sp_unit_get_by_id(SP_UNIT_PX));
590 sp_document_set_width(this, w, &px);
591 sp_document_set_height(this, h, &px);
593 NR::translate const tr(NR::Point(0, (old_height - h))
594 - rect.min());
595 SP_GROUP(root)->translateChildItems(tr);
596 }
598 void sp_document_set_uri(SPDocument *document, gchar const *uri)
599 {
600 g_return_if_fail(document != NULL);
602 if (document->name) {
603 g_free(document->name);
604 document->name = NULL;
605 }
606 if (document->base) {
607 g_free(document->base);
608 document->base = NULL;
609 }
610 if (document->uri) {
611 g_free(document->uri);
612 document->uri = NULL;
613 }
615 if (uri) {
617 #ifndef WIN32
618 prepend_current_dir_if_relative(&(document->uri), uri);
619 #else
620 // FIXME: it may be that prepend_current_dir_if_relative works OK on windows too, test!
621 document->uri = g_strdup(uri);
622 #endif
624 /* fixme: Think, what this means for images (Lauris) */
625 document->base = g_path_get_dirname(document->uri);
626 document->name = g_path_get_basename(document->uri);
628 } else {
629 document->uri = g_strdup_printf(_("Unnamed document %d"), ++doc_count);
630 document->base = NULL;
631 document->name = g_strdup(document->uri);
632 }
634 // Update saveable repr attributes.
635 Inkscape::XML::Node *repr = sp_document_repr_root(document);
636 // changing uri in the document repr must not be not undoable
637 bool saved = sp_document_get_undo_sensitive(document);
638 sp_document_set_undo_sensitive(document, false);
640 repr->setAttribute("sodipodi:docname", document->name);
641 sp_document_set_undo_sensitive(document, saved);
643 document->priv->uri_set_signal.emit(document->uri);
644 }
646 void
647 sp_document_resized_signal_emit(SPDocument *doc, gdouble width, gdouble height)
648 {
649 g_return_if_fail(doc != NULL);
651 doc->priv->resized_signal.emit(width, height);
652 }
654 sigc::connection SPDocument::connectModified(SPDocument::ModifiedSignal::slot_type slot)
655 {
656 return priv->modified_signal.connect(slot);
657 }
659 sigc::connection SPDocument::connectURISet(SPDocument::URISetSignal::slot_type slot)
660 {
661 return priv->uri_set_signal.connect(slot);
662 }
664 sigc::connection SPDocument::connectResized(SPDocument::ResizedSignal::slot_type slot)
665 {
666 return priv->resized_signal.connect(slot);
667 }
669 sigc::connection
670 SPDocument::connectReconstructionStart(SPDocument::ReconstructionStart::slot_type slot)
671 {
672 return priv->_reconstruction_start_signal.connect(slot);
673 }
675 void
676 SPDocument::emitReconstructionStart(void)
677 {
678 // printf("Starting Reconstruction\n");
679 priv->_reconstruction_start_signal.emit();
680 return;
681 }
683 sigc::connection
684 SPDocument::connectReconstructionFinish(SPDocument::ReconstructionFinish::slot_type slot)
685 {
686 return priv->_reconstruction_finish_signal.connect(slot);
687 }
689 void
690 SPDocument::emitReconstructionFinish(void)
691 {
692 // printf("Finishing Reconstruction\n");
693 priv->_reconstruction_finish_signal.emit();
694 return;
695 }
697 sigc::connection SPDocument::connectCommit(SPDocument::CommitSignal::slot_type slot)
698 {
699 return priv->commit_signal.connect(slot);
700 }
704 void SPDocument::_emitModified() {
705 static guint const flags = SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG | SP_OBJECT_PARENT_MODIFIED_FLAG;
706 root->emitModified(0);
707 priv->modified_signal.emit(flags);
708 }
710 void SPDocument::bindObjectToId(gchar const *id, SPObject *object) {
711 GQuark idq = g_quark_from_string(id);
713 if (object) {
714 g_assert(g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq)) == NULL);
715 g_hash_table_insert(priv->iddef, GINT_TO_POINTER(idq), object);
716 } else {
717 g_assert(g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq)) != NULL);
718 g_hash_table_remove(priv->iddef, GINT_TO_POINTER(idq));
719 }
721 SPDocumentPrivate::IDChangedSignalMap::iterator pos;
723 pos = priv->id_changed_signals.find(idq);
724 if ( pos != priv->id_changed_signals.end() ) {
725 if (!(*pos).second.empty()) {
726 (*pos).second.emit(object);
727 } else { // discard unused signal
728 priv->id_changed_signals.erase(pos);
729 }
730 }
731 }
733 void
734 SPDocument::addUndoObserver(Inkscape::UndoStackObserver& observer)
735 {
736 this->priv->undoStackObservers.add(observer);
737 }
739 void
740 SPDocument::removeUndoObserver(Inkscape::UndoStackObserver& observer)
741 {
742 this->priv->undoStackObservers.remove(observer);
743 }
745 SPObject *SPDocument::getObjectById(gchar const *id) {
746 g_return_val_if_fail(id != NULL, NULL);
748 GQuark idq = g_quark_from_string(id);
749 return (SPObject*)g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq));
750 }
752 sigc::connection SPDocument::connectIdChanged(gchar const *id,
753 SPDocument::IDChangedSignal::slot_type slot)
754 {
755 return priv->id_changed_signals[g_quark_from_string(id)].connect(slot);
756 }
758 void SPDocument::bindObjectToRepr(Inkscape::XML::Node *repr, SPObject *object) {
759 if (object) {
760 g_assert(g_hash_table_lookup(priv->reprdef, repr) == NULL);
761 g_hash_table_insert(priv->reprdef, repr, object);
762 } else {
763 g_assert(g_hash_table_lookup(priv->reprdef, repr) != NULL);
764 g_hash_table_remove(priv->reprdef, repr);
765 }
766 }
768 SPObject *SPDocument::getObjectByRepr(Inkscape::XML::Node *repr) {
769 g_return_val_if_fail(repr != NULL, NULL);
770 return (SPObject*)g_hash_table_lookup(priv->reprdef, repr);
771 }
773 Glib::ustring SPDocument::getLanguage() {
774 gchar const *document_language = rdf_get_work_entity(this, rdf_find_entity("language"));
775 if (document_language) {
776 while (isspace(*document_language))
777 document_language++;
778 }
779 if ( !document_language || 0 == *document_language) {
780 // retrieve system language
781 document_language = getenv("LC_ALL");
782 if ( NULL == document_language || *document_language == 0 ) {
783 document_language = getenv ("LC_MESSAGES");
784 }
785 if ( NULL == document_language || *document_language == 0 ) {
786 document_language = getenv ("LANG");
787 }
789 if ( NULL != document_language ) {
790 gchar *pos = strchr(document_language, '_');
791 if ( NULL != pos ) {
792 return Glib::ustring(document_language, pos - document_language);
793 }
794 }
795 }
797 if ( NULL == document_language )
798 return Glib::ustring();
799 return document_language;
800 }
802 /* Object modification root handler */
804 void
805 sp_document_request_modified(SPDocument *doc)
806 {
807 if (!doc->modified_id) {
808 doc->modified_id = gtk_idle_add_priority(SP_DOCUMENT_UPDATE_PRIORITY, sp_document_idle_handler, doc);
809 }
810 }
812 void
813 sp_document_setup_viewport (SPDocument *doc, SPItemCtx *ctx)
814 {
815 ctx->ctx.flags = 0;
816 ctx->i2doc = NR::identity();
817 /* Set up viewport in case svg has it defined as percentages */
818 if (SP_ROOT(doc->root)->viewBox_set) { // if set, take from viewBox
819 ctx->vp.x0 = SP_ROOT(doc->root)->viewBox.x0;
820 ctx->vp.y0 = SP_ROOT(doc->root)->viewBox.y0;
821 ctx->vp.x1 = SP_ROOT(doc->root)->viewBox.x1;
822 ctx->vp.y1 = SP_ROOT(doc->root)->viewBox.y1;
823 } else { // as a last resort, set size to A4
824 ctx->vp.x0 = 0.0;
825 ctx->vp.y0 = 0.0;
826 ctx->vp.x1 = 210 * PX_PER_MM;
827 ctx->vp.y1 = 297 * PX_PER_MM;
828 }
829 ctx->i2vp = NR::identity();
830 }
832 /**
833 * Tries to update the document state based on the modified and
834 * "update required" flags, and return true if the document has
835 * been brought fully up to date.
836 */
837 bool
838 SPDocument::_updateDocument()
839 {
840 /* Process updates */
841 if (this->root->uflags || this->root->mflags) {
842 if (this->root->uflags) {
843 SPItemCtx ctx;
844 sp_document_setup_viewport (this, &ctx);
846 bool saved = sp_document_get_undo_sensitive(this);
847 sp_document_set_undo_sensitive(this, false);
849 this->root->updateDisplay((SPCtx *)&ctx, 0);
851 sp_document_set_undo_sensitive(this, saved);
852 }
853 this->_emitModified();
854 }
856 return !(this->root->uflags || this->root->mflags);
857 }
860 /**
861 * Repeatedly works on getting the document updated, since sometimes
862 * it takes more than one pass to get the document updated. But it
863 * usually should not take more than a few loops, and certainly never
864 * more than 32 iterations. So we bail out if we hit 32 iterations,
865 * since this typically indicates we're stuck in an update loop.
866 */
867 gint
868 sp_document_ensure_up_to_date(SPDocument *doc)
869 {
870 int counter = 32;
871 while (!doc->_updateDocument()) {
872 if (counter == 0) {
873 g_warning("More than 32 iteration while updating document '%s'", doc->uri);
874 break;
875 }
876 counter--;
877 }
879 if (doc->modified_id) {
880 /* Remove handler */
881 gtk_idle_remove(doc->modified_id);
882 doc->modified_id = 0;
883 }
884 return counter>0;
885 }
887 /**
888 * An idle handler to update the document. Returns true if
889 * the document needs further updates.
890 */
891 static gint
892 sp_document_idle_handler(gpointer data)
893 {
894 SPDocument *doc = static_cast<SPDocument *>(data);
895 if (doc->_updateDocument()) {
896 doc->modified_id = 0;
897 return false;
898 } else {
899 return true;
900 }
901 }
903 static bool is_within(NR::Rect const &area, NR::Rect const &box)
904 {
905 return area.contains(box);
906 }
908 static bool overlaps(NR::Rect const &area, NR::Rect const &box)
909 {
910 return area.intersects(box);
911 }
913 static GSList *find_items_in_area(GSList *s, SPGroup *group, unsigned int dkey, NR::Rect const &area,
914 bool (*test)(NR::Rect const &, NR::Rect const &), bool take_insensitive = false)
915 {
916 g_return_val_if_fail(SP_IS_GROUP(group), s);
918 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
919 if (!SP_IS_ITEM(o)) {
920 continue;
921 }
922 if (SP_IS_GROUP(o) && SP_GROUP(o)->effectiveLayerMode(dkey) == SPGroup::LAYER ) {
923 s = find_items_in_area(s, SP_GROUP(o), dkey, area, test);
924 } else {
925 SPItem *child = SP_ITEM(o);
926 NR::Maybe<NR::Rect> box = sp_item_bbox_desktop(child);
927 if ( box && test(area, *box) && (take_insensitive || child->isVisibleAndUnlocked(dkey))) {
928 s = g_slist_append(s, child);
929 }
930 }
931 }
933 return s;
934 }
936 /**
937 Returns true if an item is among the descendants of group (recursively).
938 */
939 bool item_is_in_group(SPItem *item, SPGroup *group)
940 {
941 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
942 if (!SP_IS_ITEM(o)) continue;
943 if (SP_ITEM(o) == item)
944 return true;
945 if (SP_IS_GROUP(o))
946 if (item_is_in_group(item, SP_GROUP(o)))
947 return true;
948 }
949 return false;
950 }
952 /**
953 Returns the bottommost item from the list which is at the point, or NULL if none.
954 */
955 SPItem*
956 sp_document_item_from_list_at_point_bottom(unsigned int dkey, SPGroup *group, GSList const *list,
957 NR::Point const p, bool take_insensitive)
958 {
959 g_return_val_if_fail(group, NULL);
961 gdouble delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0);
963 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
965 if (!SP_IS_ITEM(o)) continue;
967 SPItem *item = SP_ITEM(o);
968 NRArenaItem *arenaitem = sp_item_get_arenaitem(item, dkey);
969 if (arenaitem && nr_arena_item_invoke_pick(arenaitem, p, delta, 1) != NULL
970 && (take_insensitive || item->isVisibleAndUnlocked(dkey))) {
971 if (g_slist_find((GSList *) list, item) != NULL)
972 return item;
973 }
975 if (SP_IS_GROUP(o)) {
976 SPItem *found = sp_document_item_from_list_at_point_bottom(dkey, SP_GROUP(o), list, p, take_insensitive);
977 if (found)
978 return found;
979 }
981 }
982 return NULL;
983 }
985 /**
986 Returns the topmost (in z-order) item from the descendants of group (recursively) which
987 is at the point p, or NULL if none. Honors into_groups on whether to recurse into
988 non-layer groups or not. Honors take_insensitive on whether to return insensitive
989 items. If upto != NULL, then if item upto is encountered (at any level), stops searching
990 upwards in z-order and returns what it has found so far (i.e. the found item is
991 guaranteed to be lower than upto).
992 */
993 SPItem*
994 find_item_at_point(unsigned int dkey, SPGroup *group, NR::Point const p, gboolean into_groups, bool take_insensitive = false, SPItem *upto = NULL)
995 {
996 SPItem *seen = NULL, *newseen = NULL;
998 gdouble delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0);
1000 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
1001 if (!SP_IS_ITEM(o)) continue;
1003 if (upto && SP_ITEM(o) == upto)
1004 break;
1006 if (SP_IS_GROUP(o) && (SP_GROUP(o)->effectiveLayerMode(dkey) == SPGroup::LAYER || into_groups)) {
1007 // if nothing found yet, recurse into the group
1008 newseen = find_item_at_point(dkey, SP_GROUP(o), p, into_groups, take_insensitive, upto);
1009 if (newseen) {
1010 seen = newseen;
1011 newseen = NULL;
1012 }
1014 if (item_is_in_group(upto, SP_GROUP(o)))
1015 break;
1017 } else {
1018 SPItem *child = SP_ITEM(o);
1019 NRArenaItem *arenaitem = sp_item_get_arenaitem(child, dkey);
1021 // seen remembers the last (topmost) of items pickable at this point
1022 if (arenaitem && nr_arena_item_invoke_pick(arenaitem, p, delta, 1) != NULL
1023 && (take_insensitive || child->isVisibleAndUnlocked(dkey))) {
1024 seen = child;
1025 }
1026 }
1027 }
1028 return seen;
1029 }
1031 /**
1032 Returns the topmost non-layer group from the descendants of group which is at point
1033 p, or NULL if none. Recurses into layers but not into groups.
1034 */
1035 SPItem*
1036 find_group_at_point(unsigned int dkey, SPGroup *group, NR::Point const p)
1037 {
1038 SPItem *seen = NULL;
1040 gdouble delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0);
1042 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
1043 if (!SP_IS_ITEM(o)) continue;
1044 if (SP_IS_GROUP(o) && SP_GROUP(o)->effectiveLayerMode(dkey) == SPGroup::LAYER) {
1045 SPItem *newseen = find_group_at_point(dkey, SP_GROUP(o), p);
1046 if (newseen) {
1047 seen = newseen;
1048 }
1049 }
1050 if (SP_IS_GROUP(o) && SP_GROUP(o)->effectiveLayerMode(dkey) != SPGroup::LAYER ) {
1051 SPItem *child = SP_ITEM(o);
1052 NRArenaItem *arenaitem = sp_item_get_arenaitem(child, dkey);
1054 // seen remembers the last (topmost) of groups pickable at this point
1055 if (arenaitem && nr_arena_item_invoke_pick(arenaitem, p, delta, 1) != NULL) {
1056 seen = child;
1057 }
1058 }
1059 }
1060 return seen;
1061 }
1063 /*
1064 * Return list of items, contained in box
1065 *
1066 * Assumes box is normalized (and g_asserts it!)
1067 *
1068 */
1070 GSList *sp_document_items_in_box(SPDocument *document, unsigned int dkey, NR::Rect const &box)
1071 {
1072 g_return_val_if_fail(document != NULL, NULL);
1073 g_return_val_if_fail(document->priv != NULL, NULL);
1075 return find_items_in_area(NULL, SP_GROUP(document->root), dkey, box, is_within);
1076 }
1078 /*
1079 * Return list of items, that the parts of the item contained in box
1080 *
1081 * Assumes box is normalized (and g_asserts it!)
1082 *
1083 */
1085 GSList *sp_document_partial_items_in_box(SPDocument *document, unsigned int dkey, NR::Rect const &box)
1086 {
1087 g_return_val_if_fail(document != NULL, NULL);
1088 g_return_val_if_fail(document->priv != NULL, NULL);
1090 return find_items_in_area(NULL, SP_GROUP(document->root), dkey, box, overlaps);
1091 }
1093 GSList *
1094 sp_document_items_at_points(SPDocument *document, unsigned const key, std::vector<NR::Point> points)
1095 {
1096 GSList *items = NULL;
1098 // When picking along the path, we don't want small objects close together
1099 // (such as hatching strokes) to obscure each other by their deltas,
1100 // so we temporarily set delta to a small value
1101 gdouble saved_delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0);
1102 prefs_set_double_attribute ("options.cursortolerance", "value", 0.25);
1104 for(unsigned int i = 0; i < points.size(); i++) {
1105 SPItem *item = sp_document_item_at_point(document, key, points[i],
1106 false, NULL);
1107 if (item && !g_slist_find(items, item))
1108 items = g_slist_prepend (items, item);
1109 }
1111 // and now we restore it back
1112 prefs_set_double_attribute ("options.cursortolerance", "value", saved_delta);
1114 return items;
1115 }
1117 SPItem *
1118 sp_document_item_at_point(SPDocument *document, unsigned const key, NR::Point const p,
1119 gboolean const into_groups, SPItem *upto)
1120 {
1121 g_return_val_if_fail(document != NULL, NULL);
1122 g_return_val_if_fail(document->priv != NULL, NULL);
1124 return find_item_at_point(key, SP_GROUP(document->root), p, into_groups, false, upto);
1125 }
1127 SPItem*
1128 sp_document_group_at_point(SPDocument *document, unsigned int key, NR::Point const p)
1129 {
1130 g_return_val_if_fail(document != NULL, NULL);
1131 g_return_val_if_fail(document->priv != NULL, NULL);
1133 return find_group_at_point(key, SP_GROUP(document->root), p);
1134 }
1137 /* Resource management */
1139 gboolean
1140 sp_document_add_resource(SPDocument *document, gchar const *key, SPObject *object)
1141 {
1142 GSList *rlist;
1143 GQuark q = g_quark_from_string(key);
1145 g_return_val_if_fail(document != NULL, FALSE);
1146 g_return_val_if_fail(key != NULL, FALSE);
1147 g_return_val_if_fail(*key != '\0', FALSE);
1148 g_return_val_if_fail(object != NULL, FALSE);
1149 g_return_val_if_fail(SP_IS_OBJECT(object), FALSE);
1151 if (SP_OBJECT_IS_CLONED(object))
1152 return FALSE;
1154 rlist = (GSList*)g_hash_table_lookup(document->priv->resources, key);
1155 g_return_val_if_fail(!g_slist_find(rlist, object), FALSE);
1156 rlist = g_slist_prepend(rlist, object);
1157 g_hash_table_insert(document->priv->resources, (gpointer) key, rlist);
1159 document->priv->resources_changed_signals[q].emit();
1161 return TRUE;
1162 }
1164 gboolean
1165 sp_document_remove_resource(SPDocument *document, gchar const *key, SPObject *object)
1166 {
1167 GSList *rlist;
1168 GQuark q = g_quark_from_string(key);
1170 g_return_val_if_fail(document != NULL, FALSE);
1171 g_return_val_if_fail(key != NULL, FALSE);
1172 g_return_val_if_fail(*key != '\0', FALSE);
1173 g_return_val_if_fail(object != NULL, FALSE);
1174 g_return_val_if_fail(SP_IS_OBJECT(object), FALSE);
1176 if (SP_OBJECT_IS_CLONED(object))
1177 return FALSE;
1179 rlist = (GSList*)g_hash_table_lookup(document->priv->resources, key);
1180 g_return_val_if_fail(rlist != NULL, FALSE);
1181 g_return_val_if_fail(g_slist_find(rlist, object), FALSE);
1182 rlist = g_slist_remove(rlist, object);
1183 g_hash_table_insert(document->priv->resources, (gpointer) key, rlist);
1185 document->priv->resources_changed_signals[q].emit();
1187 return TRUE;
1188 }
1190 GSList const *
1191 sp_document_get_resource_list(SPDocument *document, gchar const *key)
1192 {
1193 g_return_val_if_fail(document != NULL, NULL);
1194 g_return_val_if_fail(key != NULL, NULL);
1195 g_return_val_if_fail(*key != '\0', NULL);
1197 return (GSList*)g_hash_table_lookup(document->priv->resources, key);
1198 }
1200 sigc::connection sp_document_resources_changed_connect(SPDocument *document,
1201 gchar const *key,
1202 SPDocument::ResourcesChangedSignal::slot_type slot)
1203 {
1204 GQuark q = g_quark_from_string(key);
1205 return document->priv->resources_changed_signals[q].connect(slot);
1206 }
1208 /* Helpers */
1210 gboolean
1211 sp_document_resource_list_free(gpointer /*key*/, gpointer value, gpointer /*data*/)
1212 {
1213 g_slist_free((GSList *) value);
1214 return TRUE;
1215 }
1217 unsigned int
1218 count_objects_recursive(SPObject *obj, unsigned int count)
1219 {
1220 count++; // obj itself
1222 for (SPObject *i = sp_object_first_child(obj); i != NULL; i = SP_OBJECT_NEXT(i)) {
1223 count = count_objects_recursive(i, count);
1224 }
1226 return count;
1227 }
1229 unsigned int
1230 objects_in_document(SPDocument *document)
1231 {
1232 return count_objects_recursive(SP_DOCUMENT_ROOT(document), 0);
1233 }
1235 void
1236 vacuum_document_recursive(SPObject *obj)
1237 {
1238 if (SP_IS_DEFS(obj)) {
1239 for (SPObject *def = obj->firstChild(); def; def = SP_OBJECT_NEXT(def)) {
1240 /* fixme: some inkscape-internal nodes in the future might not be collectable */
1241 def->requestOrphanCollection();
1242 }
1243 } else {
1244 for (SPObject *i = sp_object_first_child(obj); i != NULL; i = SP_OBJECT_NEXT(i)) {
1245 vacuum_document_recursive(i);
1246 }
1247 }
1248 }
1250 unsigned int
1251 vacuum_document(SPDocument *document)
1252 {
1253 unsigned int start = objects_in_document(document);
1254 unsigned int end;
1255 unsigned int newend = start;
1257 unsigned int iterations = 0;
1259 do {
1260 end = newend;
1262 vacuum_document_recursive(SP_DOCUMENT_ROOT(document));
1263 document->collectOrphans();
1264 iterations++;
1266 newend = objects_in_document(document);
1268 } while (iterations < 100 && newend < end);
1270 return start - newend;
1271 }
1273 bool SPDocument::isSeeking() const {
1274 return priv->seeking;
1275 }
1278 /*
1279 Local Variables:
1280 mode:c++
1281 c-file-style:"stroustrup"
1282 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1283 indent-tabs-mode:nil
1284 fill-column:99
1285 End:
1286 */
1287 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :