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 "node-context.h"
27 #include "xml/node-event-vector.h"
28 #include "prefs-utils.h"
29 #include "object-edit.h"
30 #include "splivarot.h"
31 #include "style.h"
33 #include "shape-editor.h"
36 ShapeEditorsCollective::ShapeEditorsCollective(SPDesktop */*dt*/) {
37 }
39 ShapeEditorsCollective::~ShapeEditorsCollective() {
40 }
43 void ShapeEditorsCollective::update_statusbar() {
45 //!!! move from nodepath: sp_nodepath_update_statusbar but summing for all nodepaths
47 }
49 ShapeEditor::ShapeEditor(SPDesktop *dt) {
50 this->desktop = dt;
51 this->grab_node = -1;
52 this->nodepath = NULL;
53 this->knotholder = NULL;
54 this->hit = false;
55 }
57 ShapeEditor::~ShapeEditor() {
58 unset_item();
59 }
61 void ShapeEditor::unset_item() {
63 Inkscape::XML::Node *old_repr = NULL;
65 if (this->nodepath) {
66 old_repr = this->nodepath->repr;
67 }
69 if (!old_repr && this->knotholder) {
70 old_repr = this->knotholder->repr;
71 }
73 if (old_repr) { // remove old listener
74 sp_repr_remove_listener_by_data(old_repr, this);
75 Inkscape::GC::release(old_repr);
76 }
78 if (this->nodepath) {
79 this->grab_node = -1;
80 sp_nodepath_destroy(this->nodepath);
81 this->nodepath = NULL;
82 }
84 if (this->knotholder) {
85 delete this->knotholder;
86 this->knotholder = NULL;
87 }
88 }
90 bool ShapeEditor::has_nodepath () {
91 return (this->nodepath != NULL);
92 }
94 bool ShapeEditor::has_knotholder () {
95 return (this->knotholder != NULL);
96 }
98 bool ShapeEditor::has_local_change () {
99 return ((this->nodepath && this->nodepath->local_change) ||
100 (this->knotholder && this->knotholder->local_change != 0));
101 }
103 void ShapeEditor::decrement_local_change () {
104 if (this->nodepath && this->nodepath->local_change > 0) {
105 this->nodepath->local_change--;
106 } else if (this->knotholder) {
107 this->knotholder->local_change = FALSE;
108 }
109 }
111 SPItem *ShapeEditor::get_item () {
112 SPItem *item = NULL;
113 if (this->has_nodepath()) {
114 item = this->nodepath->item;
115 } else if (this->has_knotholder()) {
116 item = SP_ITEM(this->knotholder->item);
117 }
118 return item;
119 }
121 GList *ShapeEditor::save_nodepath_selection () {
122 if (this->nodepath)
123 return ::save_nodepath_selection (this->nodepath);
124 return NULL;
125 }
127 void ShapeEditor::restore_nodepath_selection (GList *saved) {
128 if (this->nodepath && saved)
129 ::restore_nodepath_selection (this->nodepath, saved);
130 }
132 bool ShapeEditor::nodepath_edits_repr_key(gchar const *name) {
133 if (nodepath && name) {
134 return ( !strcmp(name, nodepath->repr_key) || !strcmp(name, nodepath->repr_nodetypes_key) );
135 }
137 return false;
138 }
140 static void shapeeditor_event_attr_changed(Inkscape::XML::Node */*repr*/, gchar const *name,
141 gchar const */*old_value*/, gchar const */*new_value*/,
142 bool /*is_interactive*/, gpointer data)
143 {
144 gboolean changed = FALSE;
146 g_assert(data);
147 ShapeEditor *sh = ((ShapeEditor *) data);
149 if ( sh->has_knotholder() || ( sh->has_nodepath() && sh->nodepath_edits_repr_key(name) ) )
150 {
151 changed = !sh->has_local_change();
152 sh->decrement_local_change();
153 }
155 if (changed) {
156 GList *saved = NULL;
157 if (sh->has_nodepath()) {
158 saved = sh->save_nodepath_selection();
159 }
161 sh->reset_item ();
163 if (sh->has_nodepath() && saved) {
164 sh->restore_nodepath_selection(saved);
165 g_list_free (saved);
166 }
167 }
169 sh->update_statusbar(); //TODO: sh->get_container()->update_statusbar();
170 }
172 static Inkscape::XML::NodeEventVector shapeeditor_repr_events = {
173 NULL, /* child_added */
174 NULL, /* child_removed */
175 shapeeditor_event_attr_changed,
176 NULL, /* content_changed */
177 NULL /* order_changed */
178 };
181 void ShapeEditor::set_item(SPItem *item) {
183 unset_item();
185 this->grab_node = -1;
187 if (item) {
188 if (SP_IS_LPE_ITEM(item)) {
189 SPLPEItem *lpeitem = SP_LPE_ITEM(item);
190 Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(lpeitem);
191 if (!(lpe && lpe->isVisible() && lpe->providesKnotholder())) {
192 // only create nodepath if the item either doesn't have an LPE
193 // or the LPE is invisible or it doesn't provide a knotholder itself
194 this->nodepath = sp_nodepath_new(desktop, item,
195 (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0));
196 } else if (lpe && lpe->isVisible()) {
197 sp_lpe_item_add_temporary_canvasitems(lpeitem, desktop);
198 }
199 }
201 if (this->nodepath) {
202 this->nodepath->shape_editor = this;
203 }
204 this->knotholder = sp_item_knot_holder(item, desktop);
206 if (this->nodepath || this->knotholder) {
207 // setting new listener
208 Inkscape::XML::Node *repr;
209 if (this->knotholder)
210 repr = this->knotholder->repr;
211 else
212 repr = SP_OBJECT_REPR(item);
213 if (repr) {
214 Inkscape::GC::anchor(repr);
215 sp_repr_add_listener(repr, &shapeeditor_repr_events, this);
216 }
217 }
218 }
219 }
221 /** Please note that this function only works for path parameters.
222 * All other parameters probably will crash Inkscape!
223 */
224 void ShapeEditor::set_item_lpe_path_parameter(SPItem *item, SPObject *lpeobject, const char * key)
225 {
226 unset_item();
228 this->grab_node = -1;
230 if (lpeobject) {
231 this->nodepath = sp_nodepath_new( desktop, lpeobject,
232 (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0),
233 key, item);
234 if (this->nodepath) {
235 this->nodepath->shape_editor = this;
237 // setting new listener
238 Inkscape::XML::Node *repr = SP_OBJECT_REPR(lpeobject);
239 if (repr) {
240 Inkscape::GC::anchor(repr);
241 sp_repr_add_listener(repr, &shapeeditor_repr_events, this);
242 }
243 }
244 }
245 }
247 /**
248 * pass a new knotholder to ShapeEditor to manage (and delete)
249 */
250 void
251 ShapeEditor::set_knotholder(KnotHolder * knot_holder)
252 {
253 unset_item();
255 this->grab_node = -1;
257 if (knot_holder) {
258 this->knotholder = knot_holder;
259 }
260 }
263 /** FIXME: think about this. Is this thing only called when the item needs to be updated?
264 Why not make a reload function in NodePath and in KnotHolder? */
265 void ShapeEditor::reset_item ()
266 {
267 if ( (this->nodepath) && (IS_LIVEPATHEFFECT(this->nodepath->object)) ) {
268 SPItem * item = this->nodepath->item;
269 SPObject *obj = this->nodepath->object;
270 char * key = g_strdup(this->nodepath->repr_key);
271 set_item_lpe_path_parameter(item, obj, key); // the above checks for nodepath, so it is indeed a path that we are editing
272 g_free(key);
273 } else {
274 SPItem * item = get_item();
275 set_item(item);
276 }
277 }
279 void ShapeEditor::nodepath_destroyed () {
280 this->nodepath = NULL;
281 }
283 void ShapeEditor::update_statusbar () {
284 if (this->nodepath)
285 sp_nodepath_update_statusbar(this->nodepath);
286 }
288 bool ShapeEditor::is_over_stroke (NR::Point event_p, bool remember) {
290 if (!this->nodepath)
291 return false; // no stroke in knotholder
293 SPItem *item = get_item();
295 //Translate click point into proper coord system
296 this->curvepoint_doc = desktop->w2d(event_p);
297 this->curvepoint_doc *= from_2geom(sp_item_dt2i_affine(item));
299 sp_nodepath_ensure_livarot_path(this->nodepath);
301 NR::Maybe<Path::cut_position> position = get_nearest_position_on_Path(this->nodepath->livarot_path, this->curvepoint_doc);
302 if (!position) {
303 return false;
304 }
306 NR::Point nearest = get_point_on_Path(this->nodepath->livarot_path, position->piece, position->t);
307 NR::Point delta = nearest - this->curvepoint_doc;
309 delta = desktop->d2w(delta);
311 double stroke_tolerance =
312 (( !SP_OBJECT_STYLE(item)->stroke.isNone() ?
313 desktop->current_zoom() *
314 SP_OBJECT_STYLE (item)->stroke_width.computed * 0.5 *
315 NR::expansion(from_2geom(sp_item_i2d_affine(item)))
316 : 0.0)
317 + prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100)) /NR::expansion(from_2geom(sp_item_i2d_affine(item)));
318 bool close = (NR::L2 (delta) < stroke_tolerance);
320 if (remember && close) {
321 this->curvepoint_event[NR::X] = (gint) event_p [NR::X];
322 this->curvepoint_event[NR::Y] = (gint) event_p [NR::Y];
323 this->hit = true;
324 this->grab_t = position->t;
325 this->grab_node = position->piece;
326 }
328 return close;
329 }
331 void ShapeEditor::add_node_near_point() {
332 if (this->nodepath) {
333 sp_nodepath_add_node_near_point(this->nodepath, this->curvepoint_doc);
334 } else if (this->knotholder) {
335 // we do not add nodes in knotholder... yet
336 }
337 }
339 void ShapeEditor::select_segment_near_point(bool toggle) {
340 if (this->nodepath) {
341 sp_nodepath_select_segment_near_point(this->nodepath, this->curvepoint_doc, toggle);
342 } else if (this->knotholder) {
343 // we do not select segments in knotholder... yet?
344 }
345 }
347 void ShapeEditor::cancel_hit() {
348 this->hit = false;
349 }
351 bool ShapeEditor::hits_curve() {
352 return (this->hit);
353 }
356 void ShapeEditor::curve_drag(gdouble eventx, gdouble eventy) {
357 if (this->nodepath && !this->nodepath->straight_path) {
359 if (this->grab_node == -1) // don't know which segment to drag
360 return;
362 // We round off the extra precision in the motion coordinates provided
363 // by some input devices (like tablets). As we'll store the coordinates
364 // as integers in curvepoint_event we need to do this rounding before
365 // comparing them with the last coordinates from curvepoint_event.
366 // See bug #1593499 for details.
368 gint x = (gint) Inkscape::round(eventx);
369 gint y = (gint) Inkscape::round(eventy);
372 // The coordinates hasn't changed since the last motion event, abort
373 if (this->curvepoint_event[NR::X] == x &&
374 this->curvepoint_event[NR::Y] == y)
375 return;
377 NR::Point const delta_w(eventx - this->curvepoint_event[NR::X],
378 eventy - this->curvepoint_event[NR::Y]);
379 NR::Point const delta_dt(this->desktop->w2d(delta_w));
381 sp_nodepath_curve_drag (this->grab_node, this->grab_t, delta_dt); //!!! FIXME: which nodepath?!!! also uses current!!!
382 this->curvepoint_event[NR::X] = x;
383 this->curvepoint_event[NR::Y] = y;
385 } else if (this->knotholder) {
386 // we do not drag curve in knotholder
387 }
389 }
391 void ShapeEditor::finish_drag() {
392 if (this->nodepath && this->hit) {
393 sp_nodepath_update_repr (this->nodepath, _("Drag curve"));
394 }
395 }
397 void ShapeEditor::select_rect(NR::Rect const &rect, bool add) {
398 if (this->nodepath) {
399 sp_nodepath_select_rect(this->nodepath, rect, add);
400 }
401 }
403 bool ShapeEditor::has_selection() {
404 if (this->nodepath)
405 return this->nodepath->selected;
406 return false; // so far, knotholder cannot have selection
407 }
409 void ShapeEditor::deselect() {
410 if (this->nodepath)
411 sp_nodepath_deselect(this->nodepath);
412 }
414 void ShapeEditor::add_node () {
415 sp_node_selected_add_node(this->nodepath);
416 }
418 void ShapeEditor::delete_nodes () {
419 sp_node_selected_delete(this->nodepath);
420 }
422 void ShapeEditor::delete_nodes_preserving_shape () {
423 if (this->nodepath && this->nodepath->selected) {
424 sp_node_delete_preserve(g_list_copy(this->nodepath->selected));
425 }
426 }
428 void ShapeEditor::delete_segment () {
429 sp_node_selected_delete_segment(this->nodepath);
430 }
432 void ShapeEditor::set_node_type(int type) {
433 sp_node_selected_set_type(this->nodepath, (Inkscape::NodePath::NodeType) type);
434 }
436 void ShapeEditor::break_at_nodes() {
437 sp_node_selected_break(this->nodepath);
438 }
440 void ShapeEditor::join_nodes() {
441 sp_node_selected_join(this->nodepath);
442 }
444 void ShapeEditor::join_segments() {
445 sp_node_selected_join_segment(this->nodepath);
446 }
448 void ShapeEditor::duplicate_nodes() {
449 sp_node_selected_duplicate(this->nodepath);
450 }
452 void ShapeEditor::set_type_of_segments(NRPathcode code) {
453 sp_node_selected_set_line_type(this->nodepath, code);
454 }
456 void ShapeEditor::move_nodes_screen(gdouble dx, gdouble dy) {
457 sp_node_selected_move_screen(this->nodepath, dx, dy);
458 }
459 void ShapeEditor::move_nodes(gdouble dx, gdouble dy) {
460 sp_node_selected_move(this->nodepath, dx, dy);
461 }
463 void ShapeEditor::rotate_nodes(gdouble angle, int which, bool screen) {
464 if (this->nodepath)
465 sp_nodepath_selected_nodes_rotate (this->nodepath, angle, which, screen);
466 }
468 void ShapeEditor::scale_nodes(gdouble const grow, int const which) {
469 sp_nodepath_selected_nodes_scale(this->nodepath, grow, which);
470 }
471 void ShapeEditor::scale_nodes_screen(gdouble const grow, int const which) {
472 sp_nodepath_selected_nodes_scale_screen(this->nodepath, grow, which);
473 }
475 void ShapeEditor::select_all (bool invert) {
476 if (this->nodepath)
477 sp_nodepath_select_all (this->nodepath, invert);
478 }
479 void ShapeEditor::select_all_from_subpath (bool invert) {
480 if (this->nodepath)
481 sp_nodepath_select_all_from_subpath (this->nodepath, invert);
482 }
483 void ShapeEditor::select_next () {
484 if (this->nodepath) {
485 sp_nodepath_select_next (this->nodepath);
486 if (this->nodepath->numSelected() >= 1) {
487 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
488 }
489 }
490 }
491 void ShapeEditor::select_prev () {
492 if (this->nodepath) {
493 sp_nodepath_select_prev (this->nodepath);
494 if (this->nodepath->numSelected() >= 1) {
495 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
496 }
497 }
498 }
500 void ShapeEditor::show_handles (bool show) {
501 if (this->nodepath && !this->nodepath->straight_path)
502 sp_nodepath_show_handles (this->nodepath, show);
503 }
505 void ShapeEditor::show_helperpath (bool show) {
506 if (this->nodepath)
507 sp_nodepath_show_helperpath (this->nodepath, show);
508 }
510 void ShapeEditor::flip (NR::Dim2 axis, NR::Maybe<NR::Point> center) {
511 if (this->nodepath)
512 sp_nodepath_flip (this->nodepath, axis, center);
513 }
515 void ShapeEditor::distribute (NR::Dim2 axis) {
516 if (this->nodepath)
517 sp_nodepath_selected_distribute (this->nodepath, axis);
518 }
519 void ShapeEditor::align (NR::Dim2 axis) {
520 if (this->nodepath)
521 sp_nodepath_selected_align (this->nodepath, axis);
522 }
525 /*
526 Local Variables:
527 mode:c++
528 c-file-style:"stroustrup"
529 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
530 indent-tabs-mode:nil
531 fill-column:99
532 End:
533 */
534 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :