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 sp_document_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 gchar *style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
217 gchar *path_effect = g_strdup(SP_OBJECT(item)->repr->attribute("inkscape:path-effect"));
219 Geom::PathVector apv = curve->get_pathvector() * SP_ITEM(path)->transform;
221 curve->unref();
223 // it's going to resurrect as one of the pieces, so we delete without advertisement
224 SP_OBJECT(item)->deleteObject(false);
226 curve = new SPCurve(apv);
227 g_assert(curve != NULL);
229 GSList *list = curve->split();
231 curve->unref();
233 GSList *reprs = NULL;
234 for (GSList *l = list; l != NULL; l = l->next) {
235 curve = (SPCurve *) l->data;
237 Inkscape::XML::Node *repr = parent->document()->createElement("svg:path");
238 repr->setAttribute("style", style);
240 repr->setAttribute("inkscape:path-effect", path_effect);
242 gchar *str = sp_svg_write_path(curve->get_pathvector());
243 if (path_effect)
244 repr->setAttribute("inkscape:original-d", str);
245 else
246 repr->setAttribute("d", str);
247 g_free(str);
249 // add the new repr to the parent
250 parent->appendChild(repr);
252 // move to the saved position
253 repr->setPosition(pos > 0 ? pos : 0);
255 // if it's the first one, restore id
256 if (l == list)
257 repr->setAttribute("id", id);
259 reprs = g_slist_prepend (reprs, repr);
261 Inkscape::GC::release(repr);
262 }
264 selection->setReprList(reprs);
266 g_slist_free(reprs);
267 g_slist_free(list);
268 g_free(style);
269 g_free(path_effect);
270 }
272 desktop->clearWaitingCursor();
274 if (did) {
275 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_BREAK_APART,
276 _("Break apart"));
277 } else {
278 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to break apart in the selection."));
279 }
280 }
282 /* This function is an entry point from GUI */
283 void
284 sp_selected_path_to_curves(SPDesktop *desktop, bool interactive)
285 {
286 Inkscape::Selection *selection = sp_desktop_selection(desktop);
288 if (selection->isEmpty()) {
289 if (interactive)
290 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>object(s)</b> to convert to path."));
291 return;
292 }
294 bool did = false;
295 if (interactive) {
296 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Converting objects to paths..."));
297 // set "busy" cursor
298 desktop->setWaitingCursor();
299 }
301 GSList *selected = g_slist_copy((GSList *) selection->itemList());
302 GSList *to_select = NULL;
303 selection->clear();
304 GSList *items = g_slist_copy(selected);
306 did = sp_item_list_to_curves(items, &selected, &to_select);
308 g_slist_free (items);
309 selection->setReprList(to_select);
310 selection->addList(selected);
311 g_slist_free (to_select);
312 g_slist_free (selected);
314 if (interactive) {
315 desktop->clearWaitingCursor();
316 if (did) {
317 sp_document_done(sp_desktop_document(desktop), SP_VERB_OBJECT_TO_CURVE,
318 _("Object to path"));
319 } else {
320 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No objects</b> to convert to path in the selection."));
321 return;
322 }
323 }
324 }
326 /** Converts the selected items to LPEItems if they are not already so; e.g. SPRects) */
327 void sp_selected_to_lpeitems(SPDesktop *desktop)
328 {
329 Inkscape::Selection *selection = sp_desktop_selection(desktop);
331 if (selection->isEmpty()) {
332 return;
333 }
335 bool did = false;
337 GSList *selected = g_slist_copy((GSList *) selection->itemList());
338 GSList *to_select = NULL;
339 selection->clear();
340 GSList *items = g_slist_copy(selected);
342 did = sp_item_list_to_curves(items, &selected, &to_select, true);
344 g_slist_free (items);
345 selection->setReprList(to_select);
346 selection->addList(selected);
347 g_slist_free (to_select);
348 g_slist_free (selected);
349 }
351 bool
352 sp_item_list_to_curves(const GSList *items, GSList **selected, GSList **to_select, bool skip_all_lpeitems)
353 {
354 bool did = false;
356 for (;
357 items != NULL;
358 items = items->next) {
360 SPItem *item = SP_ITEM(items->data);
361 SPDocument *document = item->document;
363 if ( skip_all_lpeitems &&
364 SP_IS_LPE_ITEM(item) &&
365 !SP_IS_GROUP(item) ) // also convert objects in an SPGroup when skip_all_lpeitems is set.
366 {
367 continue;
368 }
370 if (SP_IS_PATH(item) && !SP_PATH(item)->original_curve) {
371 continue; // already a path, and no path effect
372 }
374 if (SP_IS_BOX3D(item)) {
375 // convert 3D box to ordinary group of paths; replace the old element in 'selected' with the new group
376 Inkscape::XML::Node *repr = SP_OBJECT_REPR(box3d_convert_to_group(SP_BOX3D(item)));
378 if (repr) {
379 *to_select = g_slist_prepend (*to_select, repr);
380 did = true;
381 *selected = g_slist_remove (*selected, item);
382 }
384 continue;
385 }
387 if (SP_IS_GROUP(item)) {
388 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(item), true);
389 GSList *item_list = sp_item_group_item_list(SP_GROUP(item));
391 GSList *item_to_select = NULL;
392 GSList *item_selected = NULL;
394 if (sp_item_list_to_curves(item_list, &item_selected, &item_to_select))
395 did = true;
397 g_slist_free(item_list);
398 g_slist_free(item_to_select);
399 g_slist_free(item_selected);
401 continue;
402 }
404 Inkscape::XML::Node *repr = sp_selected_item_to_curved_repr(item, 0);
405 if (!repr)
406 continue;
408 did = true;
409 *selected = g_slist_remove (*selected, item);
411 // remember the position of the item
412 gint pos = SP_OBJECT_REPR(item)->position();
413 // remember parent
414 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
415 // remember id
416 char const *id = SP_OBJECT_REPR(item)->attribute("id");
417 // remember title
418 gchar *title = item->title();
419 // remember description
420 gchar *desc = item->desc();
422 // It's going to resurrect, so we delete without notifying listeners.
423 SP_OBJECT(item)->deleteObject(false);
425 // restore id
426 repr->setAttribute("id", id);
427 // add the new repr to the parent
428 parent->appendChild(repr);
429 SPObject* newObj = document->getObjectByRepr(repr);
430 if (title && newObj) {
431 newObj->setTitle(title);
432 g_free(title);
433 }
434 if (desc && newObj) {
435 newObj->setDesc(desc);
436 g_free(desc);
437 }
439 // move to the saved position
440 repr->setPosition(pos > 0 ? pos : 0);
442 /* Buglet: We don't re-add the (new version of the) object to the selection of any other
443 * desktops where it was previously selected. */
444 *to_select = g_slist_prepend (*to_select, repr);
445 Inkscape::GC::release(repr);
446 }
448 return did;
449 }
451 Inkscape::XML::Node *
452 sp_selected_item_to_curved_repr(SPItem *item, guint32 /*text_grouping_policy*/)
453 {
454 if (!item)
455 return NULL;
457 Inkscape::XML::Document *xml_doc = SP_OBJECT_REPR(item)->document();
459 if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
460 // Special treatment for text: convert each glyph to separate path, then group the paths
461 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
462 g_repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
463 /* Mask */
464 gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
465 if ( mask_str )
466 g_repr->setAttribute("mask", mask_str);
467 /* Clip path */
468 gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
469 if ( clip_path_str )
470 g_repr->setAttribute("clip-path", clip_path_str);
471 /* Rotation center */
472 g_repr->setAttribute("inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"), false);
473 g_repr->setAttribute("inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"), false);
474 /* Whole text's style */
475 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
476 SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
477 g_repr->setAttribute("style", style_str);
478 g_free(style_str);
479 Inkscape::Text::Layout::iterator iter = te_get_layout(item)->begin();
480 do {
481 Inkscape::Text::Layout::iterator iter_next = iter;
482 iter_next.nextGlyph(); // iter_next is one glyph ahead from iter
483 if (iter == iter_next)
484 break;
486 /* This glyph's style */
487 SPObject const *pos_obj = 0;
488 void *rawptr = 0;
489 te_get_layout(item)->getSourceOfCharacter(iter, &rawptr);
490 if (!rawptr || !SP_IS_OBJECT(rawptr)) // no source for glyph, abort
491 break;
492 pos_obj = SP_OBJECT(rawptr);
493 while (SP_IS_STRING(pos_obj) && SP_OBJECT_PARENT(pos_obj)) {
494 pos_obj = SP_OBJECT_PARENT(pos_obj); // SPStrings don't have style
495 }
496 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(pos_obj),
497 SP_OBJECT_STYLE(SP_OBJECT_PARENT(pos_obj)));
499 // get path from iter to iter_next:
500 SPCurve *curve = te_get_layout(item)->convertToCurves(iter, iter_next);
501 iter = iter_next; // shift to next glyph
502 if (!curve) { // error converting this glyph
503 g_free (style_str);
504 continue;
505 }
506 if (curve->is_empty()) { // whitespace glyph?
507 curve->unref();
508 g_free (style_str);
509 continue;
510 }
512 Inkscape::XML::Node *p_repr = xml_doc->createElement("svg:path");
514 gchar *def_str = sp_svg_write_path(curve->get_pathvector());
515 p_repr->setAttribute("d", def_str);
516 g_free(def_str);
517 curve->unref();
519 p_repr->setAttribute("style", style_str);
520 g_free(style_str);
522 g_repr->appendChild(p_repr);
523 Inkscape::GC::release(p_repr);
525 if (iter == te_get_layout(item)->end())
526 break;
528 } while (true);
530 return g_repr;
531 }
533 SPCurve *curve = NULL;
534 if (SP_IS_SHAPE(item)) {
535 curve = sp_shape_get_curve(SP_SHAPE(item));
536 }
538 if (!curve)
539 return NULL;
541 // Prevent empty paths from being added to the document
542 // otherwise we end up with zomby markup in the SVG file
543 if(curve->is_empty())
544 {
545 curve->unref();
546 return NULL;
547 }
549 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
550 /* Transformation */
551 repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
552 /* Style */
553 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
554 SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
555 repr->setAttribute("style", style_str);
556 g_free(style_str);
558 /* Mask */
559 gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
560 if ( mask_str )
561 repr->setAttribute("mask", mask_str);
563 /* Clip path */
564 gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
565 if ( clip_path_str )
566 repr->setAttribute("clip-path", clip_path_str);
568 /* Rotation center */
569 repr->setAttribute("inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"), false);
570 repr->setAttribute("inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"), false);
572 /* Definition */
573 gchar *def_str = sp_svg_write_path(curve->get_pathvector());
574 repr->setAttribute("d", def_str);
575 g_free(def_str);
576 curve->unref();
577 return repr;
578 }
581 void
582 sp_selected_path_reverse(SPDesktop *desktop)
583 {
584 Inkscape::Selection *selection = sp_desktop_selection(desktop);
585 GSList *items = (GSList *) selection->itemList();
587 if (!items) {
588 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to reverse."));
589 return;
590 }
593 // set "busy" cursor
594 desktop->setWaitingCursor();
596 bool did = false;
597 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Reversing paths..."));
599 for (GSList *i = items; i != NULL; i = i->next) {
601 if (!SP_IS_PATH(i->data))
602 continue;
604 did = true;
605 SPPath *path = SP_PATH(i->data);
607 SPCurve *rcurve = sp_path_get_curve_reference(path)->create_reverse();
609 gchar *str = sp_svg_write_path(rcurve->get_pathvector());
610 if ( sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(path)) ) {
611 SP_OBJECT_REPR(path)->setAttribute("inkscape:original-d", str);
612 } else {
613 SP_OBJECT_REPR(path)->setAttribute("d", str);
614 }
615 g_free(str);
617 rcurve->unref();
619 // reverse nodetypes order (Bug #179866)
620 gchar *nodetypes = g_strdup(SP_OBJECT_REPR(path)->attribute("sodipodi:nodetypes"));
621 if ( nodetypes ) {
622 SP_OBJECT_REPR(path)->setAttribute("sodipodi:nodetypes", g_strreverse(nodetypes));
623 g_free(nodetypes);
624 }
625 }
627 desktop->clearWaitingCursor();
629 if (did) {
630 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_REVERSE,
631 _("Reverse path"));
632 } else {
633 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to reverse in the selection."));
634 }
635 }
637 /*
638 Local Variables:
639 mode:c++
640 c-file-style:"stroustrup"
641 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
642 indent-tabs-mode:nil
643 fill-column:99
644 End:
645 */
646 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :