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 *
10 * Copyright (C) 1999-2004 Authors
11 * Copyright (C) 2001-2002 Ximian, Inc.
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #ifdef HAVE_CONFIG_H
17 # include <config.h>
18 #endif
19 #include "xml/repr.h"
20 #include "svg/svg.h"
21 #include "display/curve.h"
22 #include <glib/gmem.h>
23 #include <glibmm/i18n.h>
24 #include "sp-path.h"
25 #include "sp-text.h"
26 #include "sp-flowtext.h"
27 #include "libnr/nr-path.h"
28 #include "text-editing.h"
29 #include "style.h"
30 #include "inkscape.h"
31 #include "desktop.h"
32 #include "document.h"
33 #include "message-stack.h"
34 #include "selection.h"
35 #include "desktop-handles.h"
36 #include "box3d.h"
38 #include "path-chemistry.h"
40 /* Helper functions for sp_selected_path_to_curves */
41 static void sp_selected_path_to_curves0(gboolean do_document_done, guint32 text_grouping_policy);
42 enum {
43 /* Not used yet. This is the placeholder of Lauris's idea. */
44 SP_TOCURVE_INTERACTIVE = 1 << 0,
45 SP_TOCURVE_GROUPING_BY_WORD = 1 << 1,
46 SP_TOCURVE_GROUPING_BY_LINE = 1 << 2,
47 SP_TOCURVE_GROUPING_BY_WHOLE = 1 << 3
48 };
50 void
51 sp_selected_path_combine(void)
52 {
53 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
55 Inkscape::Selection *selection = sp_desktop_selection(desktop);
56 GSList *items = (GSList *) selection->itemList();
58 if (g_slist_length(items) < 2) {
59 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>at least two objects</b> to combine."));
60 return;
61 }
63 for (GSList *i = items; i != NULL; i = i->next) {
64 SPItem *item = (SPItem *) i->data;
65 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item)) {
66 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("At least one of the objects is <b>not a path</b>, cannot combine."));
67 return;
68 }
69 }
71 Inkscape::XML::Node *parent = SP_OBJECT_REPR((SPItem *) items->data)->parent();
72 for (GSList *i = items; i != NULL; i = i->next) {
73 if ( SP_OBJECT_REPR((SPItem *) i->data)->parent() != parent ) {
74 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("You cannot combine objects from <b>different groups</b> or <b>layers</b>."));
75 return;
76 }
77 }
79 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Combining paths..."));
80 // set "busy" cursor
81 desktop->setWaitingCursor();
83 sp_selected_path_to_curves0(FALSE, 0);
85 items = g_slist_copy((GSList *) selection->itemList());
86 items = g_slist_sort(items, (GCompareFunc) sp_item_repr_compare_position);
87 selection->clear();
89 // remember the position of the topmost object
90 gint topmost = (SP_OBJECT_REPR((SPItem *) g_slist_last(items)->data))->position();
92 // remember the id of the bottomost object
93 char const *id = SP_OBJECT_REPR((SPItem *) items->data)->attribute("id");
95 // FIXME: merge styles of combined objects instead of using the first one's style
96 gchar *style = g_strdup(SP_OBJECT_REPR((SPItem *) items->data)->attribute("style"));
98 GString *dstring = g_string_new("");
99 for (GSList *i = items; i != NULL; i = i->next) {
101 SPPath *path = (SPPath *) i->data;
102 SPCurve *c = sp_shape_get_curve(SP_SHAPE(path));
104 NArtBpath *abp = nr_artpath_affine(SP_CURVE_BPATH(c), SP_ITEM(path)->transform);
105 sp_curve_unref(c);
106 gchar *str = sp_svg_write_path(abp);
107 g_free(abp);
109 dstring = g_string_append(dstring, str);
110 g_free(str);
112 // if this is the bottommost object,
113 if (!strcmp(SP_OBJECT_REPR(path)->attribute("id"), id)) {
114 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
115 SP_OBJECT(path)->deleteObject(false);
116 } else {
117 // delete the object for real, so that its clones can take appropriate action
118 SP_OBJECT(path)->deleteObject();
119 }
121 topmost--;
122 }
124 g_slist_free(items);
126 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
127 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
129 // restore id
130 repr->setAttribute("id", id);
132 repr->setAttribute("style", style);
133 g_free(style);
135 repr->setAttribute("d", dstring->str);
136 g_string_free(dstring, TRUE);
138 // add the new group to the group members' common parent
139 parent->appendChild(repr);
141 // move to the position of the topmost, reduced by the number of deleted items
142 repr->setPosition(topmost > 0 ? topmost + 1 : 0);
144 desktop->clearWaitingCursor();
146 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_COMBINE,
147 _("Combine"));
149 selection->set(repr);
151 Inkscape::GC::release(repr);
152 }
154 void
155 sp_selected_path_break_apart(void)
156 {
157 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
159 Inkscape::Selection *selection = sp_desktop_selection(desktop);
161 if (selection->isEmpty()) {
162 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to break apart."));
163 return;
164 }
166 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Breaking apart paths..."));
167 // set "busy" cursor
168 desktop->setWaitingCursor();
170 bool did = false;
172 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
173 items != NULL;
174 items = items->next) {
176 SPItem *item = (SPItem *) items->data;
178 if (!SP_IS_PATH(item))
179 continue;
181 SPPath *path = SP_PATH(item);
183 SPCurve *curve = sp_shape_get_curve(SP_SHAPE(path));
184 if (curve == NULL)
185 continue;
187 did = true;
189 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
190 gint pos = SP_OBJECT_REPR(item)->position();
191 char const *id = SP_OBJECT_REPR(item)->attribute("id");
193 gchar *style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
195 NArtBpath *abp = nr_artpath_affine(SP_CURVE_BPATH(curve), (SP_ITEM(path))->transform);
197 sp_curve_unref(curve);
199 // it's going to resurrect as one of the pieces, so we delete without advertisement
200 SP_OBJECT(item)->deleteObject(false);
202 curve = sp_curve_new_from_bpath(abp);
203 g_assert(curve != NULL);
205 GSList *list = sp_curve_split(curve);
207 sp_curve_unref(curve);
209 GSList *reprs = NULL;
210 for (GSList *l = list; l != NULL; l = l->next) {
211 curve = (SPCurve *) l->data;
213 Inkscape::XML::Node *repr = parent->document()->createElement("svg:path");
214 repr->setAttribute("style", style);
216 gchar *str = sp_svg_write_path(SP_CURVE_BPATH(curve));
217 repr->setAttribute("d", str);
218 g_free(str);
220 // add the new repr to the parent
221 parent->appendChild(repr);
223 // move to the saved position
224 repr->setPosition(pos > 0 ? pos : 0);
226 // if it's the first one, restore id
227 if (l == list)
228 repr->setAttribute("id", id);
230 reprs = g_slist_prepend (reprs, repr);
232 Inkscape::GC::release(repr);
233 }
235 selection->setReprList(reprs);
237 g_slist_free(reprs);
238 g_slist_free(list);
239 g_free(style);
241 }
243 desktop->clearWaitingCursor();
245 if (did) {
246 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_BREAK_APART,
247 _("Break apart"));
248 } else {
249 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to break apart in the selection."));
250 return;
251 }
252 }
254 /* This function is an entry point from GUI */
255 void
256 sp_selected_path_to_curves(void)
257 {
258 sp_selected_path_to_curves0(TRUE, SP_TOCURVE_INTERACTIVE);
259 }
261 static void
262 sp_selected_path_to_curves0(gboolean interactive, guint32 /*text_grouping_policy*/)
263 {
264 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
266 Inkscape::Selection *selection = sp_desktop_selection(desktop);
268 if (selection->isEmpty()) {
269 if (interactive)
270 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>object(s)</b> to convert to path."));
271 return;
272 }
274 bool did = false;
275 if (interactive) {
276 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Converting objects to paths..."));
277 // set "busy" cursor
278 desktop->setWaitingCursor();
279 }
281 GSList *selected = g_slist_copy((GSList *) selection->itemList());
282 GSList *to_select = NULL;
283 selection->clear();
284 GSList *items = g_slist_copy(selected);
286 for (;
287 items != NULL;
288 items = items->next) {
290 SPItem *item = SP_ITEM(items->data);
292 if (SP_IS_PATH(item) && !SP_PATH(item)->original_curve) {
293 continue; // already a path, and no path effect
294 }
296 if (SP_IS_BOX3D(item)) {
297 // convert 3D box to ordinary group of paths; replace the old element in 'selected' with the new group
298 GSList *sel_it = g_slist_find(selected, item);
299 sel_it->data = box3d_convert_to_group(SP_BOX3D(item));
300 item = SP_ITEM(sel_it->data);
302 did = true;
303 selected = g_slist_remove (selected, item);
305 continue;
306 }
308 Inkscape::XML::Node *repr = sp_selected_item_to_curved_repr(item, 0);
309 if (!repr)
310 continue;
312 did = true;
313 selected = g_slist_remove (selected, item);
315 // remember the position of the item
316 gint pos = SP_OBJECT_REPR(item)->position();
317 // remember parent
318 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
319 // remember id
320 char const *id = SP_OBJECT_REPR(item)->attribute("id");
322 // It's going to resurrect, so we delete without notifying listeners.
323 SP_OBJECT(item)->deleteObject(false);
325 // restore id
326 repr->setAttribute("id", id);
327 // add the new repr to the parent
328 parent->appendChild(repr);
329 // move to the saved position
330 repr->setPosition(pos > 0 ? pos : 0);
332 /* Buglet: We don't re-add the (new version of the) object to the selection of any other
333 * desktops where it was previously selected. */
334 to_select = g_slist_prepend (to_select, repr);
335 Inkscape::GC::release(repr);
336 }
338 g_slist_free (items);
339 selection->setReprList(to_select);
340 selection->addList(selected);
341 g_slist_free (to_select);
342 g_slist_free (selected);
344 if (interactive) {
345 desktop->clearWaitingCursor();
346 if (did) {
347 sp_document_done(sp_desktop_document(desktop), SP_VERB_OBJECT_TO_CURVE,
348 _("Object to path"));
349 } else {
350 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No objects</b> to convert to path in the selection."));
351 return;
352 }
353 }
354 }
356 Inkscape::XML::Node *
357 sp_selected_item_to_curved_repr(SPItem *item, guint32 /*text_grouping_policy*/)
358 {
359 if (!item)
360 return NULL;
362 SPCurve *curve = NULL;
363 if (SP_IS_SHAPE(item)) {
364 curve = sp_shape_get_curve(SP_SHAPE(item));
365 } else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
366 curve = te_get_layout(item)->convertToCurves();
367 }
369 if (!curve)
370 return NULL;
372 Inkscape::XML::Document *xml_doc = SP_OBJECT_REPR(item)->document();
373 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
374 /* Transformation */
375 repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
376 /* Style */
377 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
378 SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
379 repr->setAttribute("style", style_str);
380 g_free(style_str);
382 /* Mask */
383 gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
384 if ( mask_str )
385 repr->setAttribute("mask", mask_str);
387 /* Clip path */
388 gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
389 if ( clip_path_str )
390 repr->setAttribute("clip-path", clip_path_str);
392 /* Rotation center */
393 sp_repr_set_attr(repr, "inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"));
394 sp_repr_set_attr(repr, "inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"));
396 /* Definition */
397 gchar *def_str = sp_svg_write_path(SP_CURVE_BPATH(curve));
398 repr->setAttribute("d", def_str);
399 g_free(def_str);
400 sp_curve_unref(curve);
401 return repr;
402 }
405 // FIXME: THIS DOES NOT REVERSE THE NODETYPES ORDER!
406 void
407 sp_selected_path_reverse()
408 {
409 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
411 Inkscape::Selection *selection = sp_desktop_selection(desktop);
412 GSList *items = (GSList *) selection->itemList();
414 if (!items) {
415 sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to reverse."));
416 return;
417 }
420 // set "busy" cursor
421 desktop->setWaitingCursor();
423 bool did = false;
424 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Reversing paths..."));
426 for (GSList *i = items; i != NULL; i = i->next) {
428 if (!SP_IS_PATH(i->data))
429 continue;
431 did = true;
432 SPPath *path = SP_PATH(i->data);
434 SPCurve *rcurve = sp_curve_reverse(sp_path_get_curve_reference(path));
436 gchar *str = sp_svg_write_path(SP_CURVE_BPATH(rcurve));
437 if ( sp_shape_has_path_effect(SP_SHAPE(path)) ) {
438 SP_OBJECT_REPR(path)->setAttribute("inkscape:original-d", str);
439 } else {
440 SP_OBJECT_REPR(path)->setAttribute("d", str);
441 }
442 g_free(str);
444 sp_curve_unref(rcurve);
445 }
447 desktop->clearWaitingCursor();
449 if (did) {
450 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_REVERSE,
451 _("Reverse path"));
452 } else {
453 sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to reverse in the selection."));
454 }
455 }
457 /*
458 Local Variables:
459 mode:c++
460 c-file-style:"stroustrup"
461 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
462 indent-tabs-mode:nil
463 fill-column:99
464 End:
465 */
466 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :