c9a4fe55757067bca78fea707a7864a446ef9585
1 #define __SHAPE_EDITOR_CPP__
3 /*
4 * Inkscape::ShapeEditor
5 *
6 * Authors:
7 * bulia byak <buliabyak@users.sf.net>
8 *
9 */
11 #ifdef HAVE_CONFIG_H
12 #include "config.h"
13 #endif
15 #include <string.h>
16 #include <glibmm/i18n.h>
18 #include "sp-object.h"
19 #include "sp-item.h"
20 #include "live_effects/lpeobject.h"
21 #include "selection.h"
22 #include "desktop.h"
23 #include "desktop-handles.h"
24 #include "knotholder.h"
25 #include "live_effects/parameter/pointparam-knotholder.h"
26 #include "nodepath.h"
27 #include "xml/node-event-vector.h"
28 #include "prefs-utils.h"
29 #include "object-edit.h"
30 #include "style.h"
31 #include "display/curve.h"
32 #include <2geom/pathvector.h>
33 #include "sp-shape.h"
35 #include "shape-editor.h"
38 ShapeEditorsCollective::ShapeEditorsCollective(SPDesktop */*dt*/) {
39 }
41 ShapeEditorsCollective::~ShapeEditorsCollective() {
42 }
45 void ShapeEditorsCollective::update_statusbar() {
47 //!!! move from nodepath: sp_nodepath_update_statusbar but summing for all nodepaths
49 }
51 ShapeEditor::ShapeEditor(SPDesktop *dt) {
52 this->desktop = dt;
53 this->grab_node = -1;
54 this->nodepath = NULL;
55 this->knotholder = NULL;
56 this->hit = false;
57 }
59 ShapeEditor::~ShapeEditor() {
60 unset_item(SH_KNOTHOLDER);
61 unset_item(SH_NODEPATH);
62 }
64 void ShapeEditor::unset_item(SubType type, bool keep_knotholder) {
65 Inkscape::XML::Node *old_repr = NULL;
67 switch (type) {
68 case SH_NODEPATH:
69 if (this->nodepath) {
70 old_repr = this->nodepath->repr;
71 sp_repr_remove_listener_by_data(old_repr, this);
72 Inkscape::GC::release(old_repr);
74 this->grab_node = -1;
75 sp_nodepath_destroy(this->nodepath);
76 this->nodepath = NULL;
77 }
78 break;
79 case SH_KNOTHOLDER:
80 if (this->knotholder) {
81 old_repr = this->knotholder->repr;
82 sp_repr_remove_listener_by_data(old_repr, this);
83 Inkscape::GC::release(old_repr);
85 if (!keep_knotholder) {
86 delete this->knotholder;
87 this->knotholder = NULL;
88 }
89 }
90 break;
91 }
92 }
94 bool ShapeEditor::has_nodepath () {
95 return (this->nodepath != NULL);
96 }
98 bool ShapeEditor::has_knotholder () {
99 return (this->knotholder != NULL);
100 }
102 void ShapeEditor::update_knotholder () {
103 if (this->knotholder)
104 this->knotholder->update_knots();
105 }
107 bool ShapeEditor::has_local_change (SubType type) {
108 switch (type) {
109 case SH_NODEPATH:
110 return (this->nodepath && this->nodepath->local_change);
111 case SH_KNOTHOLDER:
112 return (this->knotholder && this->knotholder->local_change != 0);
113 default:
114 g_assert_not_reached();
115 }
116 }
118 void ShapeEditor::decrement_local_change (SubType type) {
119 switch (type) {
120 case SH_NODEPATH:
121 if (this->nodepath && this->nodepath->local_change > 0) {
122 this->nodepath->local_change--;
123 }
124 break;
125 case SH_KNOTHOLDER:
126 if (this->knotholder) {
127 this->knotholder->local_change = FALSE;
128 }
129 break;
130 default:
131 g_assert_not_reached();
132 }
133 }
135 const SPItem *ShapeEditor::get_item (SubType type) {
136 const SPItem *item = NULL;
137 switch (type) {
138 case SH_NODEPATH:
139 if (this->has_nodepath()) {
140 item = this->nodepath->item;
141 }
142 break;
143 case SH_KNOTHOLDER:
144 if (this->has_knotholder()) {
145 item = this->knotholder->getItem();
146 }
147 break;
148 }
149 return item;
150 }
152 GList *ShapeEditor::save_nodepath_selection () {
153 if (this->nodepath)
154 return ::save_nodepath_selection (this->nodepath);
155 return NULL;
156 }
158 void ShapeEditor::restore_nodepath_selection (GList *saved) {
159 if (this->nodepath && saved)
160 ::restore_nodepath_selection (this->nodepath, saved);
161 }
163 bool ShapeEditor::nodepath_edits_repr_key(gchar const *name) {
164 if (nodepath && name) {
165 return ( !strcmp(name, nodepath->repr_key) || !strcmp(name, nodepath->repr_nodetypes_key) );
166 }
168 return false;
169 }
171 static void shapeeditor_np_event_attr_changed(Inkscape::XML::Node */*repr*/, gchar const *name,
172 gchar const */*old_value*/, gchar const */*new_value*/,
173 bool /*is_interactive*/, gpointer data)
174 {
175 gboolean changed_np = FALSE;
177 g_assert(data);
178 ShapeEditor *sh = ((ShapeEditor *) data);
180 if (sh->has_nodepath() && sh->nodepath_edits_repr_key(name))
181 {
182 changed_np = !sh->has_local_change(SH_NODEPATH);
183 sh->decrement_local_change(SH_NODEPATH);
184 }
186 if (changed_np) {
187 GList *saved = NULL;
188 if (sh->has_nodepath()) {
189 saved = sh->save_nodepath_selection();
190 }
192 sh->reset_item(SH_NODEPATH);
194 if (sh->has_nodepath() && saved) {
195 sh->restore_nodepath_selection(saved);
196 g_list_free (saved);
197 }
198 }
200 sh->update_statusbar(); //TODO: sh->get_container()->update_statusbar();
201 }
203 static void shapeeditor_kh_event_attr_changed(Inkscape::XML::Node */*repr*/, gchar const *name,
204 gchar const */*old_value*/, gchar const */*new_value*/,
205 bool /*is_interactive*/, gpointer data)
206 {
207 gboolean changed_kh = FALSE;
209 g_assert(data);
210 ShapeEditor *sh = ((ShapeEditor *) data);
212 if (sh->has_knotholder())
213 {
214 changed_kh = !sh->has_local_change(SH_KNOTHOLDER);
215 sh->decrement_local_change(SH_KNOTHOLDER);
216 if (changed_kh) {
217 // this can happen if an LPEItem's knotholder handle was dragged, in which case we want
218 // to keep the knotholder; in all other cases (e.g., if the LPE itself changes) we delete it
219 sh->reset_item(SH_KNOTHOLDER, !strcmp(name, "d"));
220 }
221 }
223 sh->update_statusbar(); //TODO: sh->get_container()->update_statusbar();
224 }
228 static Inkscape::XML::NodeEventVector shapeeditor_np_repr_events = {
229 NULL, /* child_added */
230 NULL, /* child_removed */
231 shapeeditor_np_event_attr_changed,
232 NULL, /* content_changed */
233 NULL /* order_changed */
234 };
236 static Inkscape::XML::NodeEventVector shapeeditor_kh_repr_events = {
237 NULL, /* child_added */
238 NULL, /* child_removed */
239 shapeeditor_kh_event_attr_changed,
240 NULL, /* content_changed */
241 NULL /* order_changed */
242 };
245 void ShapeEditor::set_item(SPItem *item, SubType type, bool keep_knotholder) {
246 // this happens (and should only happen) when for an LPEItem having both knotholder and nodepath the knotholder
247 // is adapted; in this case we don't want to delete the knotholder since this freezes the handles
248 unset_item(type, keep_knotholder);
250 this->grab_node = -1;
252 if (item) {
253 Inkscape::XML::Node *repr;
254 switch(type) {
255 case SH_NODEPATH:
256 if (SP_IS_LPE_ITEM(item)) {
257 this->nodepath = sp_nodepath_new(desktop, item, (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0));
258 }
259 if (this->nodepath) {
260 this->nodepath->shape_editor = this;
262 // setting new listener
263 repr = SP_OBJECT_REPR(item);
264 Inkscape::GC::anchor(repr);
265 sp_repr_add_listener(repr, &shapeeditor_np_repr_events, this);
266 }
267 break;
269 case SH_KNOTHOLDER:
270 if (!this->knotholder) {
271 // only recreate knotholder if none is present
272 this->knotholder = sp_item_knot_holder(item, desktop);
273 }
274 if (this->knotholder) {
275 this->knotholder->update_knots();
276 // setting new listener
277 repr = this->knotholder->repr;
278 Inkscape::GC::anchor(repr);
279 sp_repr_add_listener(repr, &shapeeditor_kh_repr_events, this);
280 }
281 break;
282 }
283 }
284 }
286 /** Please note that this function only works for path parameters.
287 * All other parameters probably will crash Inkscape!
288 */
289 void ShapeEditor::set_item_lpe_path_parameter(SPItem *item, SPObject *lpeobject, const char * key)
290 {
291 unset_item(SH_NODEPATH);
293 this->grab_node = -1;
295 if (lpeobject) {
296 this->nodepath = sp_nodepath_new( desktop, lpeobject,
297 (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0),
298 key, item);
299 if (this->nodepath) {
300 this->nodepath->shape_editor = this;
302 // setting new listener
303 Inkscape::XML::Node *repr = SP_OBJECT_REPR(lpeobject);
304 if (repr) {
305 Inkscape::GC::anchor(repr);
306 sp_repr_add_listener(repr, &shapeeditor_np_repr_events, this);
307 }
308 }
309 }
310 }
312 /**
313 * pass a new knotholder to ShapeEditor to manage (and delete)
314 */
315 void
316 ShapeEditor::set_knotholder(KnotHolder * knot_holder)
317 {
318 unset_item(SH_KNOTHOLDER);
320 this->grab_node = -1;
322 if (knot_holder) {
323 this->knotholder = knot_holder;
324 }
325 }
328 /** FIXME: think about this. Is this thing only called when the item needs to be updated?
329 Why not make a reload function in NodePath and in KnotHolder? */
330 void ShapeEditor::reset_item (SubType type, bool keep_knotholder)
331 {
332 switch (type) {
333 case SH_NODEPATH:
334 if ( (this->nodepath) && (IS_LIVEPATHEFFECT(this->nodepath->object)) ) {
335 SPItem * item = this->nodepath->item;
336 SPObject *obj = this->nodepath->object;
337 char * key = g_strdup(this->nodepath->repr_key);
338 set_item_lpe_path_parameter(item, obj, key); // the above checks for nodepath, so it is indeed a path that we are editing
339 g_free(key);
340 } else {
341 SPItem * item = (SPItem *) get_item(SH_NODEPATH);
342 set_item(item, SH_NODEPATH);
343 }
344 break;
345 case SH_KNOTHOLDER:
346 if (this->knotholder) {
347 SPItem * item = (SPItem *) get_item(SH_KNOTHOLDER);
348 set_item(item, SH_KNOTHOLDER, keep_knotholder);
349 }
350 break;
351 }
352 }
354 void ShapeEditor::nodepath_destroyed () {
355 this->nodepath = NULL;
356 }
358 void ShapeEditor::update_statusbar () {
359 if (this->nodepath)
360 sp_nodepath_update_statusbar(this->nodepath);
361 }
363 bool ShapeEditor::is_over_stroke (NR::Point event_p, bool remember) {
364 if (!this->nodepath)
365 return false; // no stroke in knotholder
367 const SPItem *item = get_item(SH_NODEPATH);
369 //Translate click point into proper coord system
370 this->curvepoint_doc = desktop->w2d(event_p);
371 this->curvepoint_doc *= sp_item_dt2i_affine(item);
373 SPCurve *curve;
374 if (SP_IS_SHAPE(item)) {
375 curve = sp_shape_get_curve(SP_SHAPE(item));
376 } else {
377 curve = this->nodepath->curve; // not sure if np->curve is always up to date...
378 }
379 Geom::PathVector const &pathv = curve->get_pathvector();
380 Geom::PathVectorPosition pvpos = Geom::nearestPoint(pathv, this->curvepoint_doc);
382 NR::Point nearest = pathv[pvpos.path_nr].pointAt(pvpos.t);
383 NR::Point delta = nearest - this->curvepoint_doc;
385 delta = desktop->d2w(delta);
387 double stroke_tolerance =
388 (( !SP_OBJECT_STYLE(item)->stroke.isNone() ?
389 desktop->current_zoom() *
390 SP_OBJECT_STYLE (item)->stroke_width.computed * 0.5 *
391 NR::expansion(sp_item_i2d_affine(item))
392 : 0.0)
393 + prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100)) /NR::expansion(sp_item_i2d_affine(item));
394 bool close = (NR::L2 (delta) < stroke_tolerance);
396 if (remember && close) {
397 // calculate index for nodepath's representation.
398 double int_part;
399 double t = std::modf(pvpos.t, &int_part);
400 unsigned int segment_index = (unsigned int)int_part + 1;
401 for (unsigned int i = 0; i < pvpos.path_nr; ++i) {
402 segment_index += pathv[i].size() + 1;
403 if (pathv[i].closed())
404 segment_index += 1;
405 }
407 this->curvepoint_event[NR::X] = (gint) event_p [NR::X];
408 this->curvepoint_event[NR::Y] = (gint) event_p [NR::Y];
409 this->hit = true;
410 this->grab_t = t;
411 this->grab_node = segment_index;
412 }
414 return close;
415 }
417 void ShapeEditor::add_node_near_point() {
418 if (this->nodepath) {
419 sp_nodepath_add_node_near_point(this->nodepath, this->curvepoint_doc);
420 } else if (this->knotholder) {
421 // we do not add nodes in knotholder... yet
422 }
423 }
425 void ShapeEditor::select_segment_near_point(bool toggle) {
426 if (this->nodepath) {
427 sp_nodepath_select_segment_near_point(this->nodepath, this->curvepoint_doc, toggle);
428 }
429 if (this->knotholder) {
430 // we do not select segments in knotholder... yet?
431 }
432 }
434 void ShapeEditor::cancel_hit() {
435 this->hit = false;
436 }
438 bool ShapeEditor::hits_curve() {
439 return (this->hit);
440 }
443 void ShapeEditor::curve_drag(gdouble eventx, gdouble eventy) {
444 if (this->nodepath && !this->nodepath->straight_path) {
446 if (this->grab_node == -1) // don't know which segment to drag
447 return;
449 // We round off the extra precision in the motion coordinates provided
450 // by some input devices (like tablets). As we'll store the coordinates
451 // as integers in curvepoint_event we need to do this rounding before
452 // comparing them with the last coordinates from curvepoint_event.
453 // See bug #1593499 for details.
455 gint x = (gint) Inkscape::round(eventx);
456 gint y = (gint) Inkscape::round(eventy);
459 // The coordinates hasn't changed since the last motion event, abort
460 if (this->curvepoint_event[NR::X] == x &&
461 this->curvepoint_event[NR::Y] == y)
462 return;
464 NR::Point const delta_w(eventx - this->curvepoint_event[NR::X],
465 eventy - this->curvepoint_event[NR::Y]);
466 NR::Point const delta_dt(this->desktop->w2d(delta_w));
468 sp_nodepath_curve_drag (this->nodepath, this->grab_node, this->grab_t, delta_dt);
469 this->curvepoint_event[NR::X] = x;
470 this->curvepoint_event[NR::Y] = y;
472 }
473 if (this->knotholder) {
474 // we do not drag curve in knotholder
475 }
477 }
479 void ShapeEditor::finish_drag() {
480 if (this->nodepath && this->hit) {
481 sp_nodepath_update_repr (this->nodepath, _("Drag curve"));
482 }
483 }
485 void ShapeEditor::select_rect(NR::Rect const &rect, bool add) {
486 if (this->nodepath) {
487 sp_nodepath_select_rect(this->nodepath, rect, add);
488 }
489 }
491 bool ShapeEditor::has_selection() {
492 if (this->nodepath)
493 return this->nodepath->selected;
494 return false; // so far, knotholder cannot have selection
495 }
497 void ShapeEditor::deselect() {
498 if (this->nodepath)
499 sp_nodepath_deselect(this->nodepath);
500 }
502 void ShapeEditor::add_node () {
503 sp_node_selected_add_node(this->nodepath);
504 }
506 void ShapeEditor::delete_nodes () {
507 sp_node_selected_delete(this->nodepath);
508 }
510 void ShapeEditor::delete_nodes_preserving_shape () {
511 if (this->nodepath && this->nodepath->selected) {
512 sp_node_delete_preserve(g_list_copy(this->nodepath->selected));
513 }
514 }
516 void ShapeEditor::delete_segment () {
517 sp_node_selected_delete_segment(this->nodepath);
518 }
520 void ShapeEditor::set_node_type(int type) {
521 sp_node_selected_set_type(this->nodepath, (Inkscape::NodePath::NodeType) type);
522 }
524 void ShapeEditor::break_at_nodes() {
525 sp_node_selected_break(this->nodepath);
526 }
528 void ShapeEditor::join_nodes() {
529 sp_node_selected_join(this->nodepath);
530 }
532 void ShapeEditor::join_segments() {
533 sp_node_selected_join_segment(this->nodepath);
534 }
536 void ShapeEditor::duplicate_nodes() {
537 sp_node_selected_duplicate(this->nodepath);
538 }
540 void ShapeEditor::set_type_of_segments(NRPathcode code) {
541 sp_node_selected_set_line_type(this->nodepath, code);
542 }
544 void ShapeEditor::move_nodes_screen(SPDesktop *desktop, gdouble dx, gdouble dy) {
545 sp_node_selected_move_screen(desktop, this->nodepath, dx, dy);
546 }
547 void ShapeEditor::move_nodes(gdouble dx, gdouble dy) {
548 sp_node_selected_move(this->nodepath, dx, dy);
549 }
551 void ShapeEditor::rotate_nodes(gdouble angle, int which, bool screen) {
552 if (this->nodepath)
553 sp_nodepath_selected_nodes_rotate (this->nodepath, angle, which, screen);
554 }
556 void ShapeEditor::scale_nodes(gdouble const grow, int const which) {
557 sp_nodepath_selected_nodes_scale(this->nodepath, grow, which);
558 }
559 void ShapeEditor::scale_nodes_screen(gdouble const grow, int const which) {
560 sp_nodepath_selected_nodes_scale_screen(this->nodepath, grow, which);
561 }
563 void ShapeEditor::select_all (bool invert) {
564 if (this->nodepath)
565 sp_nodepath_select_all (this->nodepath, invert);
566 }
567 void ShapeEditor::select_all_from_subpath (bool invert) {
568 if (this->nodepath)
569 sp_nodepath_select_all_from_subpath (this->nodepath, invert);
570 }
571 void ShapeEditor::select_next () {
572 if (this->nodepath) {
573 sp_nodepath_select_next (this->nodepath);
574 if (this->nodepath->numSelected() >= 1) {
575 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
576 }
577 }
578 }
579 void ShapeEditor::select_prev () {
580 if (this->nodepath) {
581 sp_nodepath_select_prev (this->nodepath);
582 if (this->nodepath->numSelected() >= 1) {
583 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
584 }
585 }
586 }
588 void ShapeEditor::show_handles (bool show) {
589 if (this->nodepath && !this->nodepath->straight_path)
590 sp_nodepath_show_handles (this->nodepath, show);
591 }
593 void ShapeEditor::show_helperpath (bool show) {
594 if (this->nodepath)
595 sp_nodepath_show_helperpath (this->nodepath, show);
596 }
598 void ShapeEditor::flip (NR::Dim2 axis, boost::optional<NR::Point> center) {
599 if (this->nodepath)
600 sp_nodepath_flip (this->nodepath, axis, center);
601 }
603 void ShapeEditor::distribute (NR::Dim2 axis) {
604 if (this->nodepath)
605 sp_nodepath_selected_distribute (this->nodepath, axis);
606 }
607 void ShapeEditor::align (NR::Dim2 axis) {
608 if (this->nodepath)
609 sp_nodepath_selected_align (this->nodepath, axis);
610 }
613 /*
614 Local Variables:
615 mode:c++
616 c-file-style:"stroustrup"
617 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
618 indent-tabs-mode:nil
619 fill-column:99
620 End:
621 */
622 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :