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 <glibmm/i18n.h>
17 #include "sp-object.h"
18 #include "sp-item.h"
19 #include "live_effects/lpeobject.h"
20 #include "selection.h"
21 #include "desktop.h"
22 #include "desktop-handles.h"
23 #include "knotholder.h"
24 #include "node-context.h"
25 #include "xml/node-event-vector.h"
26 #include "prefs-utils.h"
27 #include "object-edit.h"
28 #include "splivarot.h"
29 #include "style.h"
31 #include "shape-editor.h"
34 ShapeEditorsCollective::ShapeEditorsCollective(SPDesktop *dt) {
35 }
37 ShapeEditorsCollective::~ShapeEditorsCollective() {
38 }
41 void ShapeEditorsCollective::update_statusbar() {
43 //!!! move from nodepath: sp_nodepath_update_statusbar but summing for all nodepaths
45 }
47 ShapeEditor::ShapeEditor(SPDesktop *dt) {
48 this->desktop = dt;
49 this->grab_node = -1;
50 this->nodepath = NULL;
51 this->knotholder = NULL;
52 this->hit = false;
53 }
55 ShapeEditor::~ShapeEditor() {
56 unset_item();
57 }
59 void ShapeEditor::unset_item() {
61 Inkscape::XML::Node *old_repr = NULL;
63 if (this->nodepath) {
64 old_repr = this->nodepath->repr;
65 }
67 if (!old_repr && this->knotholder) {
68 old_repr = this->knotholder->repr;
69 }
71 if (old_repr) { // remove old listener
72 sp_repr_remove_listener_by_data(old_repr, this);
73 Inkscape::GC::release(old_repr);
74 }
76 if (this->nodepath) {
77 this->grab_node = -1;
78 sp_nodepath_destroy(this->nodepath);
79 this->nodepath = NULL;
80 }
82 if (this->knotholder) {
83 sp_knot_holder_destroy(this->knotholder);
84 this->knotholder = NULL;
85 }
86 }
88 bool ShapeEditor::has_nodepath () {
89 return (this->nodepath != NULL);
90 }
92 bool ShapeEditor::has_knotholder () {
93 return (this->knotholder != NULL);
94 }
96 bool ShapeEditor::has_local_change () {
97 if (this->nodepath)
98 return (this->nodepath->local_change != 0);
99 else if (this->knotholder)
100 return (this->knotholder->local_change != 0);
101 else
102 return false;
103 }
105 void ShapeEditor::decrement_local_change () {
106 if (this->nodepath) {
107 if (this->nodepath->local_change > 0)
108 this->nodepath->local_change--;
109 } else if (this->knotholder) {
110 this->knotholder->local_change = FALSE;
111 }
112 }
114 SPItem *ShapeEditor::get_item () {
115 SPItem *item = NULL;
116 if (this->has_nodepath()) {
117 item = this->nodepath->item;
118 } else if (this->has_knotholder()) {
119 item = SP_ITEM(this->knotholder->item);
120 }
121 return item;
122 }
124 GList *ShapeEditor::save_nodepath_selection () {
125 if (this->nodepath)
126 return ::save_nodepath_selection (this->nodepath);
127 return NULL;
128 }
130 void ShapeEditor::restore_nodepath_selection (GList *saved) {
131 if (this->nodepath && saved)
132 ::restore_nodepath_selection (this->nodepath, saved);
133 }
136 static void shapeeditor_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
137 gchar const *old_value, gchar const *new_value,
138 bool is_interactive, gpointer data)
139 {
140 SPItem *item = NULL;
141 gboolean changed = FALSE;
143 g_assert(data);
144 ShapeEditor *sh = ((ShapeEditor *) data);
146 item = sh->get_item();
148 if ( ( (sh->has_nodepath())
149 && ( !strcmp(name, "d") // With paths, we only need to act if one of the path-affecting attributes has changed.
150 || !strcmp(name, "sodipodi:nodetypes")
151 || !strcmp(name, "inkscape:original-d") ) )
152 || sh->has_knotholder() )
153 {
154 changed = !sh->has_local_change();
155 sh->decrement_local_change();
156 }
158 if (changed) {
159 GList *saved = NULL;
160 if (sh->has_nodepath()) {
161 saved = sh->save_nodepath_selection();
162 }
164 sh->set_item (item);
166 if (sh->has_nodepath() && saved) {
167 sh->restore_nodepath_selection(saved);
168 g_list_free (saved);
169 }
170 }
172 sh->update_statusbar(); //TODO: sh->get_container()->update_statusbar();
173 }
175 static Inkscape::XML::NodeEventVector shapeeditor_repr_events = {
176 NULL, /* child_added */
177 NULL, /* child_removed */
178 shapeeditor_event_attr_changed,
179 NULL, /* content_changed */
180 NULL /* order_changed */
181 };
184 void ShapeEditor::set_item(SPItem *item) {
186 unset_item();
188 this->grab_node = -1;
190 if (item) {
191 this->nodepath = sp_nodepath_new(desktop, item, (prefs_get_int_attribute("tools.nodes", "show_handles", 1) != 0));
192 if (this->nodepath) {
193 this->nodepath->shape_editor = this;
194 }
195 this->knotholder = sp_item_knot_holder(item, desktop);
197 if (this->nodepath || this->knotholder) {
198 // setting new listener
199 Inkscape::XML::Node *repr;
200 if (this->knotholder)
201 repr = this->knotholder->repr;
202 else
203 repr = SP_OBJECT_REPR(item);
204 if (repr) {
205 Inkscape::GC::anchor(repr);
206 sp_repr_add_listener(repr, &shapeeditor_repr_events, this);
207 }
208 }
209 }
210 }
212 /** Please note that this function only works for path parameters.
213 * All other parameters probably will crash Inkscape!
214 * Fortunately, there are no other on-canvas edittable objects at this moment :)
215 */
216 void ShapeEditor::set_item_livepatheffect_parameter(SPItem *item, SPObject *lpeobject, const char * key) {
218 unset_item();
220 this->grab_node = -1;
222 if (lpeobject) {
223 this->knotholder = NULL; // it's a path, no special knotholder needed.
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 void ShapeEditor::nodepath_destroyed () {
241 this->nodepath = NULL;
242 }
244 void ShapeEditor::update_statusbar () {
245 if (this->nodepath)
246 sp_nodepath_update_statusbar(this->nodepath);
247 }
249 bool ShapeEditor::is_over_stroke (NR::Point event_p, bool remember) {
251 if (!this->nodepath)
252 return false; // no stroke in knotholder
254 SPItem *item = get_item();
256 //Translate click point into proper coord system
257 this->curvepoint_doc = desktop->w2d(event_p);
258 this->curvepoint_doc *= sp_item_dt2i_affine(item);
260 sp_nodepath_ensure_livarot_path(this->nodepath);
262 NR::Maybe<Path::cut_position> position = get_nearest_position_on_Path(this->nodepath->livarot_path, this->curvepoint_doc);
263 if (!position) {
264 return false;
265 }
267 NR::Point nearest = get_point_on_Path(this->nodepath->livarot_path, position->piece, position->t);
268 NR::Point delta = nearest - this->curvepoint_doc;
270 delta = desktop->d2w(delta);
272 double stroke_tolerance =
273 ( !SP_OBJECT_STYLE(item)->stroke.isNone() ?
274 desktop->current_zoom() *
275 SP_OBJECT_STYLE (item)->stroke_width.computed *
276 sp_item_i2d_affine (item).expansion() * 0.5
277 : 0.0)
278 + prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100); //(double) SP_EVENT_CONTEXT(nc)->tolerance;
280 bool close = (NR::L2 (delta) < stroke_tolerance);
282 if (remember && close) {
283 this->curvepoint_event[NR::X] = (gint) event_p [NR::X];
284 this->curvepoint_event[NR::Y] = (gint) event_p [NR::Y];
285 this->hit = true;
286 this->grab_t = position->t;
287 this->grab_node = position->piece;
288 }
290 return close;
291 }
293 void ShapeEditor::add_node_near_point() {
294 if (this->nodepath) {
295 sp_nodepath_add_node_near_point(this->nodepath, this->curvepoint_doc);
296 } else if (this->knotholder) {
297 // we do not add nodes in knotholder... yet
298 }
299 }
301 void ShapeEditor::select_segment_near_point(bool toggle) {
302 if (this->nodepath) {
303 sp_nodepath_select_segment_near_point(this->nodepath, this->curvepoint_doc, toggle);
304 } else if (this->knotholder) {
305 // we do not select segments in knotholder... yet?
306 }
307 }
309 void ShapeEditor::cancel_hit() {
310 this->hit = false;
311 }
313 bool ShapeEditor::hits_curve() {
314 return (this->hit);
315 }
318 void ShapeEditor::curve_drag(gdouble eventx, gdouble eventy) {
319 if (this->nodepath && !this->nodepath->straight_path) {
321 if (this->grab_node == -1) // don't know which segment to drag
322 return;
324 // We round off the extra precision in the motion coordinates provided
325 // by some input devices (like tablets). As we'll store the coordinates
326 // as integers in curvepoint_event we need to do this rounding before
327 // comparing them with the last coordinates from curvepoint_event.
328 // See bug #1593499 for details.
330 gint x = (gint) Inkscape::round(eventx);
331 gint y = (gint) Inkscape::round(eventy);
334 // The coordinates hasn't changed since the last motion event, abort
335 if (this->curvepoint_event[NR::X] == x &&
336 this->curvepoint_event[NR::Y] == y)
337 return;
339 NR::Point const delta_w(eventx - this->curvepoint_event[NR::X],
340 eventy - this->curvepoint_event[NR::Y]);
341 NR::Point const delta_dt(this->desktop->w2d(delta_w));
343 sp_nodepath_curve_drag (this->grab_node, this->grab_t, delta_dt); //!!! FIXME: which nodepath?!!! also uses current!!!
344 this->curvepoint_event[NR::X] = x;
345 this->curvepoint_event[NR::Y] = y;
347 } else if (this->knotholder) {
348 // we do not drag curve in knotholder
349 }
351 }
353 void ShapeEditor::finish_drag() {
354 if (this->nodepath && this->hit) {
355 sp_nodepath_update_repr (this->nodepath, _("Drag curve"));
356 }
357 }
359 void ShapeEditor::select_rect(NR::Rect const &rect, bool add) {
360 if (this->nodepath) {
361 sp_nodepath_select_rect(this->nodepath, rect, add);
362 }
363 }
365 bool ShapeEditor::has_selection() {
366 if (this->nodepath)
367 return this->nodepath->selected;
368 return false; // so far, knotholder cannot have selection
369 }
371 void ShapeEditor::deselect() {
372 if (this->nodepath)
373 sp_nodepath_deselect(this->nodepath);
374 }
376 void ShapeEditor::add_node () {
377 sp_node_selected_add_node(this->nodepath);
378 }
380 void ShapeEditor::delete_nodes () {
381 sp_node_selected_delete(this->nodepath);
382 }
384 void ShapeEditor::delete_nodes_preserving_shape () {
385 if (this->nodepath && this->nodepath->selected) {
386 sp_node_delete_preserve(g_list_copy(this->nodepath->selected));
387 }
388 }
390 void ShapeEditor::delete_segment () {
391 sp_node_selected_delete_segment(this->nodepath);
392 }
394 void ShapeEditor::set_node_type(int type) {
395 sp_node_selected_set_type(this->nodepath, (Inkscape::NodePath::NodeType) type);
396 }
398 void ShapeEditor::break_at_nodes() {
399 sp_node_selected_break(this->nodepath);
400 }
402 void ShapeEditor::join_nodes() {
403 sp_node_selected_join(this->nodepath);
404 }
406 void ShapeEditor::join_segments() {
407 sp_node_selected_join_segment(this->nodepath);
408 }
410 void ShapeEditor::duplicate_nodes() {
411 sp_node_selected_duplicate(this->nodepath);
412 }
414 void ShapeEditor::set_type_of_segments(NRPathcode code) {
415 sp_node_selected_set_line_type(this->nodepath, code);
416 }
418 void ShapeEditor::move_nodes_screen(gdouble dx, gdouble dy) {
419 sp_node_selected_move_screen(this->nodepath, dx, dy);
420 }
421 void ShapeEditor::move_nodes(gdouble dx, gdouble dy) {
422 sp_node_selected_move(this->nodepath, dx, dy);
423 }
425 void ShapeEditor::rotate_nodes(gdouble angle, int which, bool screen) {
426 if (this->nodepath)
427 sp_nodepath_selected_nodes_rotate (this->nodepath, angle, which, screen);
428 }
430 void ShapeEditor::scale_nodes(gdouble const grow, int const which) {
431 sp_nodepath_selected_nodes_scale(this->nodepath, grow, which);
432 }
433 void ShapeEditor::scale_nodes_screen(gdouble const grow, int const which) {
434 sp_nodepath_selected_nodes_scale_screen(this->nodepath, grow, which);
435 }
437 void ShapeEditor::select_all (bool invert) {
438 if (this->nodepath)
439 sp_nodepath_select_all (this->nodepath, invert);
440 }
441 void ShapeEditor::select_all_from_subpath (bool invert) {
442 if (this->nodepath)
443 sp_nodepath_select_all_from_subpath (this->nodepath, invert);
444 }
445 void ShapeEditor::select_next () {
446 if (this->nodepath) {
447 sp_nodepath_select_next (this->nodepath);
448 if (this->nodepath->numSelected() >= 1) {
449 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
450 }
451 }
452 }
453 void ShapeEditor::select_prev () {
454 if (this->nodepath) {
455 sp_nodepath_select_prev (this->nodepath);
456 if (this->nodepath->numSelected() >= 1) {
457 this->desktop->scroll_to_point(&(this->nodepath->singleSelectedCoords()), 1.0);
458 }
459 }
460 }
462 void ShapeEditor::show_handles (bool show) {
463 if (this->nodepath)
464 sp_nodepath_show_handles (this->nodepath, show);
465 }
468 void ShapeEditor::flip (NR::Dim2 axis, NR::Maybe<NR::Point> center) {
469 if (this->nodepath)
470 sp_nodepath_flip (this->nodepath, axis, center);
471 }
473 void ShapeEditor::distribute (NR::Dim2 axis) {
474 if (this->nodepath)
475 sp_nodepath_selected_distribute (this->nodepath, axis);
476 }
477 void ShapeEditor::align (NR::Dim2 axis) {
478 if (this->nodepath)
479 sp_nodepath_selected_align (this->nodepath, axis);
480 }
483 /*
484 Local Variables:
485 mode:c++
486 c-file-style:"stroustrup"
487 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
488 indent-tabs-mode:nil
489 fill-column:99
490 End:
491 */
492 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :