1 #define __SP_PATH_CHEMISTRY_C__
3 /*
4 * Here are handlers for modifying selections, specific to paths
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 * Jasper van de Gronde <th.v.d.gronde@hccnet.nl>
10 *
11 * Copyright (C) 1999-2008 Authors
12 * Copyright (C) 2001-2002 Ximian, Inc.
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #ifdef HAVE_CONFIG_H
18 # include <config.h>
19 #endif
20 #include <cstring>
21 #include <string>
22 #include "xml/repr.h"
23 #include "svg/svg.h"
24 #include "display/curve.h"
25 #include <glib/gmem.h>
26 #include <glibmm/i18n.h>
27 #include "sp-path.h"
28 #include "sp-text.h"
29 #include "sp-flowtext.h"
30 #include "text-editing.h"
31 #include "style.h"
32 #include "desktop.h"
33 #include "document.h"
34 #include "message-stack.h"
35 #include "selection.h"
36 #include "desktop-handles.h"
37 #include "box3d.h"
38 #include <2geom/pathvector.h>
39 #include "selection-chemistry.h"
40 #include "path-chemistry.h"
42 void
43 sp_selected_path_combine(SPDesktop *desktop)
44 {
45 Inkscape::Selection *selection = sp_desktop_selection(desktop);
46 SPDocument *doc = sp_desktop_document(desktop);
48 if (g_slist_length((GSList *) selection->itemList()) < 1) {
49 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>object(s)</b> to combine."));
50 return;
51 }
53 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Combining paths..."));
54 // set "busy" cursor
55 desktop->setWaitingCursor();
57 GSList *items = g_slist_copy((GSList *) selection->itemList());
59 items = sp_degroup_list (items); // descend into any groups in selection
61 GSList *to_paths = NULL;
62 for (GSList *i = items; i != NULL; i = i->next) {
63 SPItem *item = (SPItem *) i->data;
64 if (!SP_IS_PATH(item) && !SP_IS_GROUP(item))
65 to_paths = g_slist_prepend(to_paths, item);
66 }
67 GSList *converted = NULL;
68 bool did = sp_item_list_to_curves(to_paths, &items, &converted);
69 g_slist_free(to_paths);
70 for (GSList *i = converted; i != NULL; i = i->next)
71 items = g_slist_prepend(items, doc->getObjectByRepr((Inkscape::XML::Node*)(i->data)));
73 items = sp_degroup_list (items); // converting to path may have added more groups, descend again
75 items = g_slist_sort(items, (GCompareFunc) sp_item_repr_compare_position);
76 items = g_slist_reverse(items);
78 // remember the position, id, transform and style of the topmost path, they will be assigned to the combined one
79 gint position = 0;
80 char const *id = NULL;
81 char const *transform = NULL;
82 gchar *style = NULL;
83 gchar *path_effect = NULL;
85 SPCurve* curve = 0;
86 SPItem *first = NULL;
87 Inkscape::XML::Node *parent = NULL;
89 if (did) {
90 selection->clear();
91 }
93 for (GSList *i = items; i != NULL; i = i->next) { // going from top to bottom
95 SPItem *item = (SPItem *) i->data;
96 if (!SP_IS_PATH(item))
97 continue;
99 if (!did) {
100 selection->clear();
101 did = true;
102 }
104 SPCurve *c = sp_path_get_curve_for_edit(SP_PATH(item));
105 if (first == NULL) { // this is the topmost path
106 first = item;
107 parent = SP_OBJECT_REPR(first)->parent();
108 position = SP_OBJECT_REPR(first)->position();
109 id = SP_OBJECT_REPR(first)->attribute("id");
110 transform = SP_OBJECT_REPR(first)->attribute("transform");
111 // FIXME: merge styles of combined objects instead of using the first one's style
112 style = g_strdup(SP_OBJECT_REPR(first)->attribute("style"));
113 path_effect = g_strdup(SP_OBJECT_REPR(first)->attribute("inkscape:path-effect"));
114 //c->transform(item->transform);
115 curve = c;
116 } else {
117 c->transform(item->getRelativeTransform(SP_OBJECT(first)));
118 curve->append(c, false);
119 c->unref();
120 }
122 // unless this is the topmost object,
123 if (item != first) {
124 // reduce position only if the same parent
125 if (SP_OBJECT_REPR(item)->parent() == parent)
126 position--;
127 // delete the object for real, so that its clones can take appropriate action
128 SP_OBJECT(item)->deleteObject();
129 }
130 }
132 g_slist_free(items);
134 if (did) {
135 SP_OBJECT(first)->deleteObject(false);
136 // delete the topmost.
138 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
139 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
141 // restore id, transform, path effect, and style
142 repr->setAttribute("id", id);
143 if (transform) repr->setAttribute("transform", transform);
144 repr->setAttribute("style", style);
145 g_free(style);
147 repr->setAttribute("inkscape:path-effect", path_effect);
148 g_free(path_effect);
150 // set path data corresponding to new curve
151 gchar *dstring = sp_svg_write_path(curve->get_pathvector());
152 curve->unref();
153 if (path_effect)
154 repr->setAttribute("inkscape:original-d", dstring);
155 else
156 repr->setAttribute("d", dstring);
157 g_free(dstring);
159 // add the new group to the parent of the topmost
160 parent->appendChild(repr);
162 // move to the position of the topmost, reduced by the number of deleted items
163 repr->setPosition(position > 0 ? position : 0);
165 SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_COMBINE,
166 _("Combine"));
168 selection->set(repr);
170 Inkscape::GC::release(repr);
172 } else {
173 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to combine in the selection."));
174 }
176 desktop->clearWaitingCursor();
177 }
179 void
180 sp_selected_path_break_apart(SPDesktop *desktop)
181 {
182 Inkscape::Selection *selection = sp_desktop_selection(desktop);
184 if (selection->isEmpty()) {
185 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to break apart."));
186 return;
187 }
189 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Breaking apart paths..."));
190 // set "busy" cursor
191 desktop->setWaitingCursor();
193 bool did = false;
195 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
196 items != NULL;
197 items = items->next) {
199 SPItem *item = (SPItem *) items->data;
201 if (!SP_IS_PATH(item))
202 continue;
204 SPPath *path = SP_PATH(item);
206 SPCurve *curve = sp_path_get_curve_for_edit(SP_PATH(path));
207 if (curve == NULL)
208 continue;
210 did = true;
212 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
213 gint pos = SP_OBJECT_REPR(item)->position();
214 char const *id = SP_OBJECT_REPR(item)->attribute("id");
216 // XML Tree being used directly here while it shouldn't be...
217 gchar *style = g_strdup(SP_OBJECT(item)->getRepr()->attribute("style"));
218 // XML Tree being used directly here while it shouldn't be...
219 gchar *path_effect = g_strdup(SP_OBJECT(item)->getRepr()->attribute("inkscape:path-effect"));
221 Geom::PathVector apv = curve->get_pathvector() * SP_ITEM(path)->transform;
223 curve->unref();
225 // it's going to resurrect as one of the pieces, so we delete without advertisement
226 SP_OBJECT(item)->deleteObject(false);
228 curve = new SPCurve(apv);
229 g_assert(curve != NULL);
231 GSList *list = curve->split();
233 curve->unref();
235 GSList *reprs = NULL;
236 for (GSList *l = list; l != NULL; l = l->next) {
237 curve = (SPCurve *) l->data;
239 Inkscape::XML::Node *repr = parent->document()->createElement("svg:path");
240 repr->setAttribute("style", style);
242 repr->setAttribute("inkscape:path-effect", path_effect);
244 gchar *str = sp_svg_write_path(curve->get_pathvector());
245 if (path_effect)
246 repr->setAttribute("inkscape:original-d", str);
247 else
248 repr->setAttribute("d", str);
249 g_free(str);
251 // add the new repr to the parent
252 parent->appendChild(repr);
254 // move to the saved position
255 repr->setPosition(pos > 0 ? pos : 0);
257 // if it's the first one, restore id
258 if (l == list)
259 repr->setAttribute("id", id);
261 reprs = g_slist_prepend (reprs, repr);
263 Inkscape::GC::release(repr);
264 }
266 selection->setReprList(reprs);
268 g_slist_free(reprs);
269 g_slist_free(list);
270 g_free(style);
271 g_free(path_effect);
272 }
274 desktop->clearWaitingCursor();
276 if (did) {
277 SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_BREAK_APART,
278 _("Break apart"));
279 } else {
280 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to break apart in the selection."));
281 }
282 }
284 /* This function is an entry point from GUI */
285 void
286 sp_selected_path_to_curves(SPDesktop *desktop, bool interactive)
287 {
288 Inkscape::Selection *selection = sp_desktop_selection(desktop);
290 if (selection->isEmpty()) {
291 if (interactive)
292 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>object(s)</b> to convert to path."));
293 return;
294 }
296 bool did = false;
297 if (interactive) {
298 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Converting objects to paths..."));
299 // set "busy" cursor
300 desktop->setWaitingCursor();
301 }
303 GSList *selected = g_slist_copy((GSList *) selection->itemList());
304 GSList *to_select = NULL;
305 selection->clear();
306 GSList *items = g_slist_copy(selected);
308 did = sp_item_list_to_curves(items, &selected, &to_select);
310 g_slist_free (items);
311 selection->setReprList(to_select);
312 selection->addList(selected);
313 g_slist_free (to_select);
314 g_slist_free (selected);
316 if (interactive) {
317 desktop->clearWaitingCursor();
318 if (did) {
319 SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_OBJECT_TO_CURVE,
320 _("Object to path"));
321 } else {
322 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No objects</b> to convert to path in the selection."));
323 return;
324 }
325 }
326 }
328 /** Converts the selected items to LPEItems if they are not already so; e.g. SPRects) */
329 void sp_selected_to_lpeitems(SPDesktop *desktop)
330 {
331 Inkscape::Selection *selection = sp_desktop_selection(desktop);
333 if (selection->isEmpty()) {
334 return;
335 }
337 bool did = false;
339 GSList *selected = g_slist_copy((GSList *) selection->itemList());
340 GSList *to_select = NULL;
341 selection->clear();
342 GSList *items = g_slist_copy(selected);
344 did = sp_item_list_to_curves(items, &selected, &to_select, true);
346 g_slist_free (items);
347 selection->setReprList(to_select);
348 selection->addList(selected);
349 g_slist_free (to_select);
350 g_slist_free (selected);
351 }
353 bool
354 sp_item_list_to_curves(const GSList *items, GSList **selected, GSList **to_select, bool skip_all_lpeitems)
355 {
356 bool did = false;
358 for (;
359 items != NULL;
360 items = items->next) {
362 SPItem *item = SP_ITEM(items->data);
363 SPDocument *document = item->document;
365 if ( skip_all_lpeitems &&
366 SP_IS_LPE_ITEM(item) &&
367 !SP_IS_GROUP(item) ) // also convert objects in an SPGroup when skip_all_lpeitems is set.
368 {
369 continue;
370 }
372 if (SP_IS_PATH(item) && !SP_PATH(item)->original_curve) {
373 continue; // already a path, and no path effect
374 }
376 if (SP_IS_BOX3D(item)) {
377 // convert 3D box to ordinary group of paths; replace the old element in 'selected' with the new group
378 Inkscape::XML::Node *repr = SP_OBJECT_REPR(box3d_convert_to_group(SP_BOX3D(item)));
380 if (repr) {
381 *to_select = g_slist_prepend (*to_select, repr);
382 did = true;
383 *selected = g_slist_remove (*selected, item);
384 }
386 continue;
387 }
389 if (SP_IS_GROUP(item)) {
390 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(item), true);
391 GSList *item_list = sp_item_group_item_list(SP_GROUP(item));
393 GSList *item_to_select = NULL;
394 GSList *item_selected = NULL;
396 if (sp_item_list_to_curves(item_list, &item_selected, &item_to_select))
397 did = true;
399 g_slist_free(item_list);
400 g_slist_free(item_to_select);
401 g_slist_free(item_selected);
403 continue;
404 }
406 Inkscape::XML::Node *repr = sp_selected_item_to_curved_repr(item, 0);
407 if (!repr)
408 continue;
410 did = true;
411 *selected = g_slist_remove (*selected, item);
413 // remember the position of the item
414 gint pos = SP_OBJECT_REPR(item)->position();
415 // remember parent
416 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
417 // remember id
418 char const *id = SP_OBJECT_REPR(item)->attribute("id");
419 // remember title
420 gchar *title = item->title();
421 // remember description
422 gchar *desc = item->desc();
424 // It's going to resurrect, so we delete without notifying listeners.
425 SP_OBJECT(item)->deleteObject(false);
427 // restore id
428 repr->setAttribute("id", id);
429 // add the new repr to the parent
430 parent->appendChild(repr);
431 SPObject* newObj = document->getObjectByRepr(repr);
432 if (title && newObj) {
433 newObj->setTitle(title);
434 g_free(title);
435 }
436 if (desc && newObj) {
437 newObj->setDesc(desc);
438 g_free(desc);
439 }
441 // move to the saved position
442 repr->setPosition(pos > 0 ? pos : 0);
444 /* Buglet: We don't re-add the (new version of the) object to the selection of any other
445 * desktops where it was previously selected. */
446 *to_select = g_slist_prepend (*to_select, repr);
447 Inkscape::GC::release(repr);
448 }
450 return did;
451 }
453 Inkscape::XML::Node *
454 sp_selected_item_to_curved_repr(SPItem *item, guint32 /*text_grouping_policy*/)
455 {
456 if (!item)
457 return NULL;
459 Inkscape::XML::Document *xml_doc = SP_OBJECT_REPR(item)->document();
461 if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
462 // Special treatment for text: convert each glyph to separate path, then group the paths
463 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
464 g_repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
465 /* Mask */
466 gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
467 if ( mask_str )
468 g_repr->setAttribute("mask", mask_str);
469 /* Clip path */
470 gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
471 if ( clip_path_str )
472 g_repr->setAttribute("clip-path", clip_path_str);
473 /* Rotation center */
474 g_repr->setAttribute("inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"), false);
475 g_repr->setAttribute("inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"), false);
476 /* Whole text's style */
477 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
478 SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
479 g_repr->setAttribute("style", style_str);
480 g_free(style_str);
481 Inkscape::Text::Layout::iterator iter = te_get_layout(item)->begin();
482 do {
483 Inkscape::Text::Layout::iterator iter_next = iter;
484 iter_next.nextGlyph(); // iter_next is one glyph ahead from iter
485 if (iter == iter_next)
486 break;
488 /* This glyph's style */
489 SPObject const *pos_obj = 0;
490 void *rawptr = 0;
491 te_get_layout(item)->getSourceOfCharacter(iter, &rawptr);
492 if (!rawptr || !SP_IS_OBJECT(rawptr)) // no source for glyph, abort
493 break;
494 pos_obj = SP_OBJECT(rawptr);
495 while (SP_IS_STRING(pos_obj) && SP_OBJECT_PARENT(pos_obj)) {
496 pos_obj = SP_OBJECT_PARENT(pos_obj); // SPStrings don't have style
497 }
498 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(pos_obj),
499 SP_OBJECT_STYLE(SP_OBJECT_PARENT(pos_obj)));
501 // get path from iter to iter_next:
502 SPCurve *curve = te_get_layout(item)->convertToCurves(iter, iter_next);
503 iter = iter_next; // shift to next glyph
504 if (!curve) { // error converting this glyph
505 g_free (style_str);
506 continue;
507 }
508 if (curve->is_empty()) { // whitespace glyph?
509 curve->unref();
510 g_free (style_str);
511 continue;
512 }
514 Inkscape::XML::Node *p_repr = xml_doc->createElement("svg:path");
516 gchar *def_str = sp_svg_write_path(curve->get_pathvector());
517 p_repr->setAttribute("d", def_str);
518 g_free(def_str);
519 curve->unref();
521 p_repr->setAttribute("style", style_str);
522 g_free(style_str);
524 g_repr->appendChild(p_repr);
525 Inkscape::GC::release(p_repr);
527 if (iter == te_get_layout(item)->end())
528 break;
530 } while (true);
532 return g_repr;
533 }
535 SPCurve *curve = NULL;
536 if (SP_IS_SHAPE(item)) {
537 curve = SP_SHAPE(item)->getCurve();
538 }
540 if (!curve)
541 return NULL;
543 // Prevent empty paths from being added to the document
544 // otherwise we end up with zomby markup in the SVG file
545 if(curve->is_empty())
546 {
547 curve->unref();
548 return NULL;
549 }
551 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
552 /* Transformation */
553 repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
554 /* Style */
555 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
556 SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
557 repr->setAttribute("style", style_str);
558 g_free(style_str);
560 /* Mask */
561 gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
562 if ( mask_str )
563 repr->setAttribute("mask", mask_str);
565 /* Clip path */
566 gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
567 if ( clip_path_str )
568 repr->setAttribute("clip-path", clip_path_str);
570 /* Rotation center */
571 repr->setAttribute("inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"), false);
572 repr->setAttribute("inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"), false);
574 /* Definition */
575 gchar *def_str = sp_svg_write_path(curve->get_pathvector());
576 repr->setAttribute("d", def_str);
577 g_free(def_str);
578 curve->unref();
579 return repr;
580 }
583 void
584 sp_selected_path_reverse(SPDesktop *desktop)
585 {
586 Inkscape::Selection *selection = sp_desktop_selection(desktop);
587 GSList *items = (GSList *) selection->itemList();
589 if (!items) {
590 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to reverse."));
591 return;
592 }
595 // set "busy" cursor
596 desktop->setWaitingCursor();
598 bool did = false;
599 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Reversing paths..."));
601 for (GSList *i = items; i != NULL; i = i->next) {
603 if (!SP_IS_PATH(i->data))
604 continue;
606 did = true;
607 SPPath *path = SP_PATH(i->data);
609 SPCurve *rcurve = sp_path_get_curve_reference(path)->create_reverse();
611 gchar *str = sp_svg_write_path(rcurve->get_pathvector());
612 if ( sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(path)) ) {
613 SP_OBJECT_REPR(path)->setAttribute("inkscape:original-d", str);
614 } else {
615 SP_OBJECT_REPR(path)->setAttribute("d", str);
616 }
617 g_free(str);
619 rcurve->unref();
621 // reverse nodetypes order (Bug #179866)
622 gchar *nodetypes = g_strdup(SP_OBJECT_REPR(path)->attribute("sodipodi:nodetypes"));
623 if ( nodetypes ) {
624 SP_OBJECT_REPR(path)->setAttribute("sodipodi:nodetypes", g_strreverse(nodetypes));
625 g_free(nodetypes);
626 }
627 }
629 desktop->clearWaitingCursor();
631 if (did) {
632 SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_REVERSE,
633 _("Reverse path"));
634 } else {
635 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to reverse in the selection."));
636 }
637 }
639 /*
640 Local Variables:
641 mode:c++
642 c-file-style:"stroustrup"
643 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
644 indent-tabs-mode:nil
645 fill-column:99
646 End:
647 */
648 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :