dd8e1124e675a0c5847e74eeb39738d0c662798d
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 sp_knot_holder_destroy(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 if (this->nodepath)
100 return (this->nodepath->local_change != 0);
101 else if (this->knotholder)
102 return (this->knotholder->local_change != 0);
103 else
104 return false;
105 }
107 void ShapeEditor::decrement_local_change () {
108 if (this->nodepath) {
109 if (this->nodepath->local_change > 0)
110 this->nodepath->local_change--;
111 } else if (this->knotholder) {
112 this->knotholder->local_change = FALSE;
113 }
114 }
116 SPItem *ShapeEditor::get_item () {
117 SPItem *item = NULL;
118 if (this->has_nodepath()) {
119 item = this->nodepath->item;
120 } else if (this->has_knotholder()) {
121 item = SP_ITEM(this->knotholder->item);
122 }
123 return item;
124 }
126 GList *ShapeEditor::save_nodepath_selection () {
127 if (this->nodepath)
128 return ::save_nodepath_selection (this->nodepath);
129 return NULL;
130 }
132 void ShapeEditor::restore_nodepath_selection (GList *saved) {
133 if (this->nodepath && saved)
134 ::restore_nodepath_selection (this->nodepath, saved);
135 }
137 bool ShapeEditor::nodepath_edits_repr_key(gchar const *name) {
138 if (nodepath && name) {
139 return ( !strcmp(name, nodepath->repr_key) || !strcmp(name, nodepath->repr_nodetypes_key) );
140 }
142 return false;
143 }
145 static void shapeeditor_event_attr_changed(Inkscape::XML::Node */*repr*/, gchar const *name,
146 gchar const */*old_value*/, gchar const */*new_value*/,
147 bool /*is_interactive*/, gpointer data)
148 {
149 gboolean changed = FALSE;
151 g_assert(data);
152 ShapeEditor *sh = ((ShapeEditor *) data);
154 if ( sh->has_knotholder() || ( sh->has_nodepath() && sh->nodepath_edits_repr_key(name) ) )
155 {
156 changed = !sh->has_local_change();
157 sh->decrement_local_change();
158 }
160 if (changed) {
161 GList *saved = NULL;
162 if (sh->has_nodepath()) {
163 saved = sh->save_nodepath_selection();
164 }
166 sh->reset_item ();
168 if (sh->has_nodepath() && saved) {
169 sh->restore_nodepath_selection(saved);
170 g_list_free (saved);
171 }
172 }
174 sh->update_statusbar(); //TODO: sh->get_container()->update_statusbar();
175 }
177 static Inkscape::XML::NodeEventVector shapeeditor_repr_events = {
178 NULL, /* child_added */
179 NULL, /* child_removed */
180 shapeeditor_event_attr_changed,
181 NULL, /* content_changed */
182 NULL /* order_changed */
183 };
186 void ShapeEditor::set_item(SPItem *item) {
188 unset_item();
190 this->grab_node = -1;
192 if (item) {
193 this->nodepath = sp_nodepath_new(desktop, item, (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0));
194 if (this->nodepath) {
195 this->nodepath->shape_editor = this;
196 }
197 this->knotholder = sp_item_knot_holder(item, desktop);
199 if (this->nodepath || this->knotholder) {
200 // setting new listener
201 Inkscape::XML::Node *repr;
202 if (this->knotholder)
203 repr = this->knotholder->repr;
204 else
205 repr = SP_OBJECT_REPR(item);
206 if (repr) {
207 Inkscape::GC::anchor(repr);
208 sp_repr_add_listener(repr, &shapeeditor_repr_events, this);
209 }
210 }
211 }
212 }
214 /** Please note that this function only works for path parameters.
215 * All other parameters probably will crash Inkscape!
216 */
217 void ShapeEditor::set_item_lpe_path_parameter(SPItem *item, SPObject *lpeobject, const char * key)
218 {
219 unset_item();
221 this->grab_node = -1;
223 if (lpeobject) {
224 this->nodepath = sp_nodepath_new( desktop, lpeobject,
225 (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0),
226 key, item);
227 if (this->nodepath) {
228 this->nodepath->shape_editor = this;
230 // setting new listener
231 Inkscape::XML::Node *repr = SP_OBJECT_REPR(lpeobject);
232 if (repr) {
233 Inkscape::GC::anchor(repr);
234 sp_repr_add_listener(repr, &shapeeditor_repr_events, this);
235 }
236 }
237 }
238 }
240 /**
241 * pass a new knotholder to ShapeEditor to manage (and delete)
242 */
243 void
244 ShapeEditor::set_knotholder(SPKnotHolder * knot_holder)
245 {
246 unset_item();
248 this->grab_node = -1;
250 if (knot_holder) {
251 this->knotholder = knot_holder;
252 }
253 }
256 /** FIXME: think about this. Is this thing only called when the item needs to be updated?
257 Why not make a reload function in NodePath and in KnotHolder? */
258 void ShapeEditor::reset_item ()
259 {
260 if ( (this->nodepath) && (IS_LIVEPATHEFFECT(this->nodepath->object)) ) {
261 SPItem * item = this->nodepath->item;
262 SPObject *obj = this->nodepath->object;
263 char * key = g_strdup(this->nodepath->repr_key);
264 set_item_lpe_path_parameter(item, obj, key); // the above checks for nodepath, so it is indeed a path that we are editing
265 g_free(key);
266 } else {
267 SPItem * item = get_item();
268 set_item(item);
269 }
270 }
272 void ShapeEditor::nodepath_destroyed () {
273 this->nodepath = NULL;
274 }
276 void ShapeEditor::update_statusbar () {
277 if (this->nodepath)
278 sp_nodepath_update_statusbar(this->nodepath);
279 }
281 bool ShapeEditor::is_over_stroke (NR::Point event_p, bool remember) {
283 if (!this->nodepath)
284 return false; // no stroke in knotholder
286 SPItem *item = get_item();
288 //Translate click point into proper coord system
289 this->curvepoint_doc = desktop->w2d(event_p);
290 this->curvepoint_doc *= sp_item_dt2i_affine(item);
292 sp_nodepath_ensure_livarot_path(this->nodepath);
294 NR::Maybe<Path::cut_position> position = get_nearest_position_on_Path(this->nodepath->livarot_path, this->curvepoint_doc);
295 if (!position) {
296 return false;
297 }
299 NR::Point nearest = get_point_on_Path(this->nodepath->livarot_path, position->piece, position->t);
300 NR::Point delta = nearest - this->curvepoint_doc;
302 delta = desktop->d2w(delta);
304 double stroke_tolerance =
305 (( !SP_OBJECT_STYLE(item)->stroke.isNone() ?
306 desktop->current_zoom() *
307 SP_OBJECT_STYLE (item)->stroke_width.computed * 0.5 *
308 sp_item_i2d_affine (item).expansion()
309 : 0.0)
310 + prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100)) /sp_item_i2d_affine (item).expansion();
311 bool close = (NR::L2 (delta) < stroke_tolerance);
313 if (remember && close) {
314 this->curvepoint_event[NR::X] = (gint) event_p [NR::X];
315 this->curvepoint_event[NR::Y] = (gint) event_p [NR::Y];
316 this->hit = true;
317 this->grab_t = position->t;
318 this->grab_node = position->piece;
319 }
321 return close;
322 }
324 void ShapeEditor::add_node_near_point() {
325 if (this->nodepath) {
326 sp_nodepath_add_node_near_point(this->nodepath, this->curvepoint_doc);
327 } else if (this->knotholder) {
328 // we do not add nodes in knotholder... yet
329 }
330 }
332 void ShapeEditor::select_segment_near_point(bool toggle) {
333 if (this->nodepath) {
334 sp_nodepath_select_segment_near_point(this->nodepath, this->curvepoint_doc, toggle);
335 } else if (this->knotholder) {
336 // we do not select segments in knotholder... yet?
337 }
338 }
340 void ShapeEditor::cancel_hit() {
341 this->hit = false;
342 }
344 bool ShapeEditor::hits_curve() {
345 return (this->hit);
346 }
349 void ShapeEditor::curve_drag(gdouble eventx, gdouble eventy) {
350 if (this->nodepath && !this->nodepath->straight_path) {
352 if (this->grab_node == -1) // don't know which segment to drag
353 return;
355 // We round off the extra precision in the motion coordinates provided
356 // by some input devices (like tablets). As we'll store the coordinates
357 // as integers in curvepoint_event we need to do this rounding before
358 // comparing them with the last coordinates from curvepoint_event.
359 // See bug #1593499 for details.
361 gint x = (gint) Inkscape::round(eventx);
362 gint y = (gint) Inkscape::round(eventy);
365 // The coordinates hasn't changed since the last motion event, abort
366 if (this->curvepoint_event[NR::X] == x &&
367 this->curvepoint_event[NR::Y] == y)
368 return;
370 NR::Point const delta_w(eventx - this->curvepoint_event[NR::X],
371 eventy - this->curvepoint_event[NR::Y]);
372 NR::Point const delta_dt(this->desktop->w2d(delta_w));
374 sp_nodepath_curve_drag (this->grab_node, this->grab_t, delta_dt); //!!! FIXME: which nodepath?!!! also uses current!!!
375 this->curvepoint_event[NR::X] = x;
376 this->curvepoint_event[NR::Y] = y;
378 } else if (this->knotholder) {
379 // we do not drag curve in knotholder
380 }
382 }
384 void ShapeEditor::finish_drag() {
385 if (this->nodepath && this->hit) {
386 sp_nodepath_update_repr (this->nodepath, _("Drag curve"));
387 }
388 }
390 void ShapeEditor::select_rect(NR::Rect const &rect, bool add) {
391 if (this->nodepath) {
392 sp_nodepath_select_rect(this->nodepath, rect, add);
393 }
394 }
396 bool ShapeEditor::has_selection() {
397 if (this->nodepath)
398 return this->nodepath->selected;
399 return false; // so far, knotholder cannot have selection
400 }
402 void ShapeEditor::deselect() {
403 if (this->nodepath)
404 sp_nodepath_deselect(this->nodepath);
405 }
407 void ShapeEditor::add_node () {
408 sp_node_selected_add_node(this->nodepath);
409 }
411 void ShapeEditor::delete_nodes () {
412 sp_node_selected_delete(this->nodepath);
413 }
415 void ShapeEditor::delete_nodes_preserving_shape () {
416 if (this->nodepath && this->nodepath->selected) {
417 sp_node_delete_preserve(g_list_copy(this->nodepath->selected));
418 }
419 }
421 void ShapeEditor::delete_segment () {
422 sp_node_selected_delete_segment(this->nodepath);
423 }
425 void ShapeEditor::set_node_type(int type) {
426 sp_node_selected_set_type(this->nodepath, (Inkscape::NodePath::NodeType) type);
427 }
429 void ShapeEditor::break_at_nodes() {
430 sp_node_selected_break(this->nodepath);
431 }
433 void ShapeEditor::join_nodes() {
434 sp_node_selected_join(this->nodepath);
435 }
437 void ShapeEditor::join_segments() {
438 sp_node_selected_join_segment(this->nodepath);
439 }
441 void ShapeEditor::duplicate_nodes() {
442 sp_node_selected_duplicate(this->nodepath);
443 }
445 void ShapeEditor::set_type_of_segments(NRPathcode code) {
446 sp_node_selected_set_line_type(this->nodepath, code);
447 }
449 void ShapeEditor::move_nodes_screen(gdouble dx, gdouble dy) {
450 sp_node_selected_move_screen(this->nodepath, dx, dy);
451 }
452 void ShapeEditor::move_nodes(gdouble dx, gdouble dy) {
453 sp_node_selected_move(this->nodepath, dx, dy);
454 }
456 void ShapeEditor::rotate_nodes(gdouble angle, int which, bool screen) {
457 if (this->nodepath)
458 sp_nodepath_selected_nodes_rotate (this->nodepath, angle, which, screen);
459 }
461 void ShapeEditor::scale_nodes(gdouble const grow, int const which) {
462 sp_nodepath_selected_nodes_scale(this->nodepath, grow, which);
463 }
464 void ShapeEditor::scale_nodes_screen(gdouble const grow, int const which) {
465 sp_nodepath_selected_nodes_scale_screen(this->nodepath, grow, which);
466 }
468 void ShapeEditor::select_all (bool invert) {
469 if (this->nodepath)
470 sp_nodepath_select_all (this->nodepath, invert);
471 }
472 void ShapeEditor::select_all_from_subpath (bool invert) {
473 if (this->nodepath)
474 sp_nodepath_select_all_from_subpath (this->nodepath, invert);
475 }
476 void ShapeEditor::select_next () {
477 if (this->nodepath) {
478 sp_nodepath_select_next (this->nodepath);
479 if (this->nodepath->numSelected() >= 1) {
480 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
481 }
482 }
483 }
484 void ShapeEditor::select_prev () {
485 if (this->nodepath) {
486 sp_nodepath_select_prev (this->nodepath);
487 if (this->nodepath->numSelected() >= 1) {
488 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
489 }
490 }
491 }
493 void ShapeEditor::show_handles (bool show) {
494 if (this->nodepath && !this->nodepath->straight_path)
495 sp_nodepath_show_handles (this->nodepath, show);
496 }
498 void ShapeEditor::show_helperpath (bool show) {
499 if (this->nodepath)
500 sp_nodepath_show_helperpath (this->nodepath, show);
501 }
503 void ShapeEditor::flip (NR::Dim2 axis, NR::Maybe<NR::Point> center) {
504 if (this->nodepath)
505 sp_nodepath_flip (this->nodepath, axis, center);
506 }
508 void ShapeEditor::distribute (NR::Dim2 axis) {
509 if (this->nodepath)
510 sp_nodepath_selected_distribute (this->nodepath, axis);
511 }
512 void ShapeEditor::align (NR::Dim2 axis) {
513 if (this->nodepath)
514 sp_nodepath_selected_align (this->nodepath, axis);
515 }
518 /*
519 Local Variables:
520 mode:c++
521 c-file-style:"stroustrup"
522 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
523 indent-tabs-mode:nil
524 fill-column:99
525 End:
526 */
527 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :