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 <glibmm/i18n.h>
23 #include "sp-path.h"
24 #include "sp-text.h"
25 #include "sp-flowtext.h"
26 #include "libnr/nr-path.h"
27 #include "text-editing.h"
28 #include "style.h"
29 #include "inkscape.h"
30 #include "document.h"
31 #include "message-stack.h"
32 #include "selection.h"
33 #include "desktop-handles.h"
35 /* Helper functions for sp_selected_path_to_curves */
36 static void sp_selected_path_to_curves0(gboolean do_document_done, guint32 text_grouping_policy);
37 static Inkscape::XML::Node *sp_selected_item_to_curved_repr(SPItem *item, guint32 text_grouping_policy);
38 enum {
39 /* Not used yet. This is the placeholder of Lauris's idea. */
40 SP_TOCURVE_INTERACTIVE = 1 << 0,
41 SP_TOCURVE_GROUPING_BY_WORD = 1 << 1,
42 SP_TOCURVE_GROUPING_BY_LINE = 1 << 2,
43 SP_TOCURVE_GROUPING_BY_WHOLE = 1 << 3
44 };
46 void
47 sp_selected_path_combine(void)
48 {
49 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
51 Inkscape::Selection *selection = SP_DT_SELECTION(desktop);
52 GSList *items = (GSList *) selection->itemList();
54 if (g_slist_length(items) < 2) {
55 SP_DT_MSGSTACK(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>at least two objects</b> to combine."));
56 return;
57 }
59 for (GSList *i = items; i != NULL; i = i->next) {
60 SPItem *item = (SPItem *) i->data;
61 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item)) {
62 SP_DT_MSGSTACK(desktop)->flash(Inkscape::WARNING_MESSAGE, _("At least one of the objects is <b>not a path</b>, cannot combine."));
63 return;
64 }
65 }
67 Inkscape::XML::Node *parent = SP_OBJECT_REPR((SPItem *) items->data)->parent();
68 for (GSList *i = items; i != NULL; i = i->next) {
69 if ( SP_OBJECT_REPR((SPItem *) i->data)->parent() != parent ) {
70 SP_DT_MSGSTACK(desktop)->flash(Inkscape::ERROR_MESSAGE, _("You cannot combine objects from <b>different groups</b> or <b>layers</b>."));
71 return;
72 }
73 }
75 sp_selected_path_to_curves0(FALSE, 0);
77 items = (GSList *) selection->itemList();
79 items = g_slist_copy(items);
81 items = g_slist_sort(items, (GCompareFunc) sp_item_repr_compare_position);
83 // remember the position of the topmost object
84 gint topmost = (SP_OBJECT_REPR((SPItem *) g_slist_last(items)->data))->position();
86 // remember the id of the bottomost object
87 char const *id = SP_OBJECT_REPR((SPItem *) items->data)->attribute("id");
89 // FIXME: merge styles of combined objects instead of using the first one's style
90 gchar *style = g_strdup(SP_OBJECT_REPR((SPItem *) items->data)->attribute("style"));
92 GString *dstring = g_string_new("");
93 for (GSList *i = items; i != NULL; i = i->next) {
95 SPPath *path = (SPPath *) i->data;
96 SPCurve *c = sp_shape_get_curve(SP_SHAPE(path));
98 NArtBpath *abp = nr_artpath_affine(c->bpath, SP_ITEM(path)->transform);
99 sp_curve_unref(c);
100 gchar *str = sp_svg_write_path(abp);
101 nr_free(abp);
103 dstring = g_string_append(dstring, str);
104 g_free(str);
106 // if this is the bottommost object,
107 if (!strcmp(SP_OBJECT_REPR(path)->attribute("id"), id)) {
108 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
109 SP_OBJECT(path)->deleteObject(false);
110 } else {
111 // delete the object for real, so that its clones can take appropriate action
112 SP_OBJECT(path)->deleteObject();
113 }
115 topmost--;
116 }
118 g_slist_free(items);
120 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
122 // restore id
123 repr->setAttribute("id", id);
125 repr->setAttribute("style", style);
126 g_free(style);
128 repr->setAttribute("d", dstring->str);
129 g_string_free(dstring, TRUE);
131 // add the new group to the group members' common parent
132 parent->appendChild(repr);
134 // move to the position of the topmost, reduced by the number of deleted items
135 repr->setPosition(topmost > 0 ? topmost + 1 : 0);
137 sp_document_done(SP_DT_DOCUMENT(desktop));
139 selection->set(repr);
141 Inkscape::GC::release(repr);
142 }
144 void
145 sp_selected_path_break_apart(void)
146 {
147 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
149 Inkscape::Selection *selection = SP_DT_SELECTION(desktop);
151 if (selection->isEmpty()) {
152 SP_DT_MSGSTACK(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to break apart."));
153 return;
154 }
156 bool did = false;
158 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
159 items != NULL;
160 items = items->next) {
162 SPItem *item = (SPItem *) items->data;
164 if (!SP_IS_PATH(item))
165 continue;
167 SPPath *path = SP_PATH(item);
169 SPCurve *curve = sp_shape_get_curve(SP_SHAPE(path));
170 if (curve == NULL)
171 continue;
173 did = true;
175 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
176 gint pos = SP_OBJECT_REPR(item)->position();
177 char const *id = SP_OBJECT_REPR(item)->attribute("id");
179 gchar *style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
181 NArtBpath *abp = nr_artpath_affine(curve->bpath, (SP_ITEM(path))->transform);
183 sp_curve_unref(curve);
185 // it's going to resurrect as one of the pieces, so we delete without advertisement
186 SP_OBJECT(item)->deleteObject(false);
188 curve = sp_curve_new_from_bpath(abp);
189 g_assert(curve != NULL);
191 GSList *list = sp_curve_split(curve);
193 sp_curve_unref(curve);
195 for (GSList *l = g_slist_reverse(list); l != NULL; l = l->next) {
196 curve = (SPCurve *) l->data;
198 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
199 repr->setAttribute("style", style);
201 gchar *str = sp_svg_write_path(curve->bpath);
202 repr->setAttribute("d", str);
203 g_free(str);
205 // add the new repr to the parent
206 parent->appendChild(repr);
208 // move to the saved position
209 repr->setPosition(pos > 0 ? pos : 0);
211 // if it's the first one, restore id
212 if (l == list)
213 repr->setAttribute("id", id);
215 selection->add(repr);
217 Inkscape::GC::release(repr);
218 }
220 g_slist_free(list);
221 g_free(style);
223 }
225 if (did) {
226 sp_document_done(SP_DT_DOCUMENT(desktop));
227 } else {
228 SP_DT_MSGSTACK(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to break apart in the selection."));
229 return;
230 }
231 }
233 /* This function is an entry point from GUI */
234 void
235 sp_selected_path_to_curves(void)
236 {
237 sp_selected_path_to_curves0(TRUE, SP_TOCURVE_INTERACTIVE);
238 }
240 static void
241 sp_selected_path_to_curves0(gboolean interactive, guint32 text_grouping_policy)
242 {
243 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
245 Inkscape::Selection *selection = SP_DT_SELECTION(desktop);
247 if (selection->isEmpty()) {
248 if (interactive)
249 SP_DT_MSGSTACK(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>object(s)</b> to convert to path."));
250 return;
251 }
253 bool did = false;
255 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
256 items != NULL;
257 items = items->next) {
259 SPItem *item = SP_ITEM(items->data);
261 Inkscape::XML::Node *repr = sp_selected_item_to_curved_repr(item, 0);
262 if (!repr)
263 continue;
265 did = true;
267 // remember the position of the item
268 gint pos = SP_OBJECT_REPR(item)->position();
269 // remember parent
270 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
271 // remember id
272 char const *id = SP_OBJECT_REPR(item)->attribute("id");
274 selection->remove(item);
276 // it's going to resurrect, so we delete without advertisement
277 SP_OBJECT(item)->deleteObject(false);
279 // restore id
280 repr->setAttribute("id", id);
281 // add the new repr to the parent
282 parent->appendChild(repr);
283 // move to the saved position
284 repr->setPosition(pos > 0 ? pos : 0);
286 selection->add(repr);
287 Inkscape::GC::release(repr);
288 }
290 if (interactive) {
291 if (did) {
292 sp_document_done(SP_DT_DOCUMENT(desktop));
293 } else {
294 SP_DT_MSGSTACK(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No objects</b> to convert to path in the selection."));
295 return;
296 }
297 }
298 }
300 static Inkscape::XML::Node *
301 sp_selected_item_to_curved_repr(SPItem *item, guint32 text_grouping_policy)
302 {
303 if (!item)
304 return NULL;
306 SPCurve *curve = NULL;
307 if (SP_IS_SHAPE(item)) {
308 curve = sp_shape_get_curve(SP_SHAPE(item));
309 } else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
310 curve = te_get_layout(item)->convertToCurves();
311 }
313 if (!curve)
314 return NULL;
316 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
317 /* Transformation */
318 repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
319 /* Style */
320 gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
321 SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
322 repr->setAttribute("style", style_str);
323 g_free(style_str);
325 /* Definition */
326 gchar *def_str = sp_svg_write_path(curve->bpath);
327 repr->setAttribute("d", def_str);
328 g_free(def_str);
329 sp_curve_unref(curve);
330 return repr;
331 }
333 void
334 sp_selected_path_reverse()
335 {
336 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
338 Inkscape::Selection *selection = SP_DT_SELECTION(desktop);
339 GSList *items = (GSList *) selection->itemList();
341 if (!items) {
342 SP_DT_MSGSTACK(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to reverse."));
343 return;
344 }
347 bool did = false;
348 for (GSList *i = items; i != NULL; i = i->next) {
350 if (!SP_IS_SHAPE(i->data))
351 continue;
353 did = true;
354 SPShape *shape = SP_SHAPE(i->data);
356 SPCurve *rcurve = sp_curve_reverse(shape->curve);
358 gchar *str = sp_svg_write_path(rcurve->bpath);
359 SP_OBJECT_REPR(shape)->setAttribute("d", str);
360 g_free(str);
362 sp_curve_unref(rcurve);
363 }
365 if (did) {
366 sp_document_done(SP_DT_DOCUMENT(desktop));
367 } else {
368 SP_DT_MSGSTACK(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to reverse in the selection."));
369 }
370 }
372 /*
373 Local Variables:
374 mode:c++
375 c-file-style:"stroustrup"
376 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
377 indent-tabs-mode:nil
378 fill-column:99
379 End:
380 */
381 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :