1 #define __SP_NODE_CONTEXT_C__
3 /*
4 * Node editing context
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * This code is in public domain
11 */
13 #ifdef HAVE_CONFIG_H
14 # include "config.h"
15 #endif
16 #include <cstring>
17 #include <string>
18 #include <gdk/gdkkeysyms.h>
19 #include "macros.h"
20 #include <glibmm/i18n.h>
21 #include "display/sp-canvas-util.h"
22 #include "object-edit.h"
23 #include "sp-path.h"
24 #include "path-chemistry.h"
25 #include "rubberband.h"
26 #include "desktop.h"
27 #include "desktop-handles.h"
28 #include "selection.h"
29 #include "pixmaps/cursor-node.xpm"
30 #include "message-context.h"
31 #include "node-context.h"
32 #include "pixmaps/cursor-node-d.xpm"
33 #include "prefs-utils.h"
34 #include "xml/node-event-vector.h"
35 #include "style.h"
36 #include "splivarot.h"
37 #include "shape-editor.h"
38 #include "live_effects/effect.h"
40 #include "sp-lpe-item.h"
42 // needed for flash nodepath upon mouseover:
43 #include "display/canvas-bpath.h"
44 #include "display/curve.h"
46 static void sp_node_context_class_init(SPNodeContextClass *klass);
47 static void sp_node_context_init(SPNodeContext *node_context);
48 static void sp_node_context_dispose(GObject *object);
50 static void sp_node_context_setup(SPEventContext *ec);
51 static gint sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event);
52 static gint sp_node_context_item_handler(SPEventContext *event_context,
53 SPItem *item, GdkEvent *event);
55 static SPEventContextClass *parent_class;
57 GType
58 sp_node_context_get_type()
59 {
60 static GType type = 0;
61 if (!type) {
62 GTypeInfo info = {
63 sizeof(SPNodeContextClass),
64 NULL, NULL,
65 (GClassInitFunc) sp_node_context_class_init,
66 NULL, NULL,
67 sizeof(SPNodeContext),
68 4,
69 (GInstanceInitFunc) sp_node_context_init,
70 NULL, /* value_table */
71 };
72 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPNodeContext", &info, (GTypeFlags)0);
73 }
74 return type;
75 }
77 static void
78 sp_node_context_class_init(SPNodeContextClass *klass)
79 {
80 GObjectClass *object_class = (GObjectClass *) klass;
81 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
83 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
85 object_class->dispose = sp_node_context_dispose;
87 event_context_class->setup = sp_node_context_setup;
88 event_context_class->root_handler = sp_node_context_root_handler;
89 event_context_class->item_handler = sp_node_context_item_handler;
90 }
92 static void
93 sp_node_context_init(SPNodeContext *node_context)
94 {
95 SPEventContext *event_context = SP_EVENT_CONTEXT(node_context);
97 event_context->cursor_shape = cursor_node_xpm;
98 event_context->hot_x = 1;
99 event_context->hot_y = 1;
101 node_context->leftalt = FALSE;
102 node_context->rightalt = FALSE;
103 node_context->leftctrl = FALSE;
104 node_context->rightctrl = FALSE;
106 new (&node_context->sel_changed_connection) sigc::connection();
108 node_context->flash_tempitem = NULL;
109 node_context->flashed_item = NULL;
110 node_context->remove_flash_counter = 0;
111 }
113 static void
114 sp_node_context_dispose(GObject *object)
115 {
116 SPNodeContext *nc = SP_NODE_CONTEXT(object);
117 SPEventContext *ec = SP_EVENT_CONTEXT(object);
119 ec->enableGrDrag(false);
121 nc->sel_changed_connection.disconnect();
122 nc->sel_changed_connection.~connection();
124 delete nc->shape_editor;
126 if (nc->_node_message_context) {
127 delete nc->_node_message_context;
128 }
130 G_OBJECT_CLASS(parent_class)->dispose(object);
131 }
133 static void
134 sp_node_context_setup(SPEventContext *ec)
135 {
136 SPNodeContext *nc = SP_NODE_CONTEXT(ec);
138 if (((SPEventContextClass *) parent_class)->setup)
139 ((SPEventContextClass *) parent_class)->setup(ec);
141 Inkscape::Selection *selection = sp_desktop_selection (ec->desktop);
142 nc->sel_changed_connection.disconnect();
143 nc->sel_changed_connection =
144 selection->connectChanged(sigc::bind(sigc::ptr_fun(&sp_node_context_selection_changed), (gpointer)nc));
146 SPItem *item = selection->singleItem();
148 nc->shape_editor = new ShapeEditor(ec->desktop);
150 nc->rb_escaped = false;
152 nc->cursor_drag = false;
154 nc->added_node = false;
156 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
158 if (item) {
159 nc->shape_editor->set_item(item, SH_NODEPATH);
160 nc->shape_editor->set_item(item, SH_KNOTHOLDER);
161 }
163 if (prefs_get_int_attribute("tools.nodes", "selcue", 0) != 0) {
164 ec->enableSelectionCue();
165 }
167 if (prefs_get_int_attribute("tools.nodes", "gradientdrag", 0) != 0) {
168 ec->enableGrDrag();
169 }
171 ec->desktop->emitToolSubselectionChanged(NULL); // sets the coord entry fields to inactive
173 nc->_node_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
175 nc->shape_editor->update_statusbar();
176 }
178 static void
179 sp_node_context_flash_path(SPEventContext *event_context, SPItem *item, guint timeout) {
180 g_print ("-----> sp_node_context_flash_path(): TODO: generate the helper path!!\n");
181 SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
183 nc->remove_flash_counter = 3; // for some reason root_handler is called twice after each item_handler...
184 if (nc->flashed_item != item) {
185 // we entered a new item
186 nc->flashed_item = item;
187 SPDesktop *desktop = event_context->desktop;
188 if (nc->flash_tempitem) {
189 desktop->remove_temporary_canvasitem(nc->flash_tempitem);
190 nc->flash_tempitem = NULL;
191 }
193 if (SP_IS_PATH(item)) {
194 SPCanvasItem *canvasitem = sp_nodepath_helperpath_from_path(desktop, SP_PATH(item));
195 nc->flash_tempitem = desktop->add_temporary_canvasitem (canvasitem, timeout);
196 }
197 }
198 }
200 /**
201 \brief Callback that processes the "changed" signal on the selection;
202 destroys old and creates new nodepath and reassigns listeners to the new selected item's repr
203 */
204 void
205 sp_node_context_selection_changed(Inkscape::Selection *selection, gpointer data)
206 {
207 SPNodeContext *nc = SP_NODE_CONTEXT(data);
209 // TODO: update ShapeEditorsCollective instead
210 nc->shape_editor->unset_item(SH_NODEPATH);
211 nc->shape_editor->unset_item(SH_KNOTHOLDER);
212 SPItem *item = selection->singleItem();
213 nc->shape_editor->set_item(item, SH_NODEPATH);
214 nc->shape_editor->set_item(item, SH_KNOTHOLDER);
215 nc->shape_editor->update_statusbar();
216 }
218 void
219 sp_node_context_show_modifier_tip(SPEventContext *event_context, GdkEvent *event)
220 {
221 sp_event_show_modifier_tip
222 (event_context->defaultMessageContext(), event,
223 _("<b>Ctrl</b>: toggle node type, snap handle angle, move hor/vert; <b>Ctrl+Alt</b>: move along handles"),
224 _("<b>Shift</b>: toggle node selection, disable snapping, rotate both handles"),
225 _("<b>Alt</b>: lock handle length; <b>Ctrl+Alt</b>: move along handles"));
226 }
228 static gint
229 sp_node_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
230 {
231 gint ret = FALSE;
233 if (prefs_get_int_attribute ("tools.nodes", "pathflash_enabled", 0) == 1) {
234 guint timeout = prefs_get_int_attribute("tools.nodes", "pathflash_timeout", 500);
235 if (SP_IS_LPE_ITEM(item)) {
236 Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item));
237 if (lpe && (lpe->providesOwnFlashPaths() ||
238 lpe->pathFlashType() == Inkscape::LivePathEffect::SUPPRESS_FLASH)) {
239 // path should be suppressed or permanent; this is handled in
240 // sp_node_context_selection_changed()
241 return ret;
242 }
243 }
244 sp_node_context_flash_path(event_context, item, timeout);
245 }
247 if (((SPEventContextClass *) parent_class)->item_handler)
248 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
250 return ret;
251 }
253 static gint
254 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
255 {
256 SPDesktop *desktop = event_context->desktop;
257 Inkscape::Selection *selection = sp_desktop_selection (desktop);
259 SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
260 double const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px
261 event_context->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100); // read every time, to make prefs changes really live
262 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
263 double const offset = prefs_get_double_attribute_limited("options.defaultscale", "value", 2, 0, 1000);
265 if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
266 desktop->remove_temporary_canvasitem(nc->flash_tempitem);
267 nc->flash_tempitem = NULL;
268 nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
269 } else {
270 nc->remove_flash_counter--;
271 }
273 gint ret = FALSE;
274 switch (event->type) {
275 case GDK_BUTTON_PRESS:
276 if (event->button.button == 1 && !event_context->space_panning) {
277 // save drag origin
278 event_context->xp = (gint) event->button.x;
279 event_context->yp = (gint) event->button.y;
280 event_context->within_tolerance = true;
281 nc->shape_editor->cancel_hit();
283 if (!(event->button.state & GDK_SHIFT_MASK)) {
284 if (!nc->drag) {
285 if (nc->shape_editor->has_nodepath() && selection->single() /* && item_over */) {
286 // save drag origin
287 bool over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), true);
288 //only dragging curves
289 if (over_stroke) {
290 ret = TRUE;
291 break;
292 }
293 }
294 }
295 }
296 NR::Point const button_w(event->button.x,
297 event->button.y);
298 NR::Point const button_dt(desktop->w2d(button_w));
299 Inkscape::Rubberband::get()->start(desktop, button_dt);
300 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
301 desktop->updateNow();
302 ret = TRUE;
303 }
304 break;
305 case GDK_MOTION_NOTIFY:
306 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
308 if ( event_context->within_tolerance
309 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
310 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
311 break; // do not drag if we're within tolerance from origin
312 }
314 // The path went away while dragging; throw away any further motion
315 // events until the mouse pointer is released.
317 if (nc->shape_editor->hits_curve() && !nc->shape_editor->has_nodepath()) {
318 break;
319 }
321 // Once the user has moved farther than tolerance from the original location
322 // (indicating they intend to move the object, not click), then always process the
323 // motion notify coordinates as given (no snapping back to origin)
324 event_context->within_tolerance = false;
326 // Once we determine what the user is doing (dragging either a node or the
327 // selection rubberband), make sure we continue to perform that operation
328 // until the mouse pointer is lifted.
329 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
330 if (nc->shape_editor->hits_curve() && nc->shape_editor->has_nodepath()) {
331 nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
332 } else {
333 nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
334 }
335 }
337 switch (nc->current_state) {
338 case SP_NODE_CONTEXT_NODE_DRAGGING:
339 {
340 nc->shape_editor->curve_drag (event->motion.x, event->motion.y);
342 gobble_motion_events(GDK_BUTTON1_MASK);
343 break;
344 }
345 case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
346 if (Inkscape::Rubberband::get()->is_started()) {
347 NR::Point const motion_w(event->motion.x,
348 event->motion.y);
349 NR::Point const motion_dt(desktop->w2d(motion_w));
350 Inkscape::Rubberband::get()->move(motion_dt);
351 }
352 break;
353 }
355 nc->drag = TRUE;
356 ret = TRUE;
357 } else {
358 if (!nc->shape_editor->has_nodepath() || selection->singleItem() == NULL) {
359 break;
360 }
362 bool over_stroke = false;
363 over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->motion.x, event->motion.y), false);
365 if (nc->cursor_drag && !over_stroke) {
366 event_context->cursor_shape = cursor_node_xpm;
367 event_context->hot_x = 1;
368 event_context->hot_y = 1;
369 sp_event_context_update_cursor(event_context);
370 nc->cursor_drag = false;
371 } else if (!nc->cursor_drag && over_stroke) {
372 event_context->cursor_shape = cursor_node_d_xpm;
373 event_context->hot_x = 1;
374 event_context->hot_y = 1;
375 sp_event_context_update_cursor(event_context);
376 nc->cursor_drag = true;
377 }
378 }
379 break;
381 case GDK_2BUTTON_PRESS:
382 case GDK_BUTTON_RELEASE:
383 if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
384 // find out clicked item, disregarding groups, honoring Alt
385 SPItem *item_clicked = sp_event_context_find_item (desktop,
386 NR::Point(event->button.x, event->button.y),
387 (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
389 event_context->xp = event_context->yp = 0;
391 bool over_stroke = false;
392 if (nc->shape_editor->has_nodepath()) {
393 over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), false);
394 }
396 if (item_clicked || over_stroke) {
397 if (over_stroke || nc->added_node) {
398 switch (event->type) {
399 case GDK_BUTTON_RELEASE:
400 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
401 //add a node
402 nc->shape_editor->add_node_near_point();
403 } else {
404 if (nc->added_node) { // we just received double click, ignore release
405 nc->added_node = false;
406 break;
407 }
408 //select the segment
409 if (event->button.state & GDK_SHIFT_MASK) {
410 nc->shape_editor->select_segment_near_point(true);
411 } else {
412 nc->shape_editor->select_segment_near_point(false);
413 }
414 desktop->updateNow();
415 }
416 break;
417 case GDK_2BUTTON_PRESS:
418 //add a node
419 nc->shape_editor->add_node_near_point();
420 nc->added_node = true;
421 break;
422 default:
423 break;
424 }
425 } else if (event->button.state & GDK_SHIFT_MASK) {
426 selection->toggle(item_clicked);
427 desktop->updateNow();
428 } else {
429 selection->set(item_clicked);
430 desktop->updateNow();
431 }
432 Inkscape::Rubberband::get()->stop();
433 ret = TRUE;
434 break;
435 }
436 }
437 if (event->type == GDK_BUTTON_RELEASE) {
438 event_context->xp = event_context->yp = 0;
439 if (event->button.button == 1) {
440 NR::Maybe<NR::Rect> b = Inkscape::Rubberband::get()->getRectangle();
442 if (nc->shape_editor->hits_curve() && !event_context->within_tolerance) { //drag curve
443 nc->shape_editor->finish_drag();
444 } else if (b && !event_context->within_tolerance) { // drag to select
445 nc->shape_editor->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
446 } else {
447 if (!(nc->rb_escaped)) { // unless something was cancelled
448 if (nc->shape_editor->has_selection())
449 nc->shape_editor->deselect();
450 else
451 sp_desktop_selection(desktop)->clear();
452 }
453 }
454 ret = TRUE;
455 Inkscape::Rubberband::get()->stop();
456 desktop->updateNow();
457 nc->rb_escaped = false;
458 nc->drag = FALSE;
459 nc->shape_editor->cancel_hit();
460 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
461 }
462 }
463 break;
464 case GDK_KEY_PRESS:
465 switch (get_group0_keyval(&event->key)) {
466 case GDK_Insert:
467 case GDK_KP_Insert:
468 // with any modifiers
469 nc->shape_editor->add_node();
470 ret = TRUE;
471 break;
472 case GDK_Delete:
473 case GDK_KP_Delete:
474 case GDK_BackSpace:
475 if (MOD__CTRL_ONLY) {
476 nc->shape_editor->delete_nodes();
477 } else {
478 nc->shape_editor->delete_nodes_preserving_shape();
479 }
480 ret = TRUE;
481 break;
482 case GDK_C:
483 case GDK_c:
484 if (MOD__SHIFT_ONLY) {
485 nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_CUSP);
486 ret = TRUE;
487 }
488 break;
489 case GDK_S:
490 case GDK_s:
491 if (MOD__SHIFT_ONLY) {
492 nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
493 ret = TRUE;
494 }
495 break;
496 case GDK_Y:
497 case GDK_y:
498 if (MOD__SHIFT_ONLY) {
499 nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SYMM);
500 ret = TRUE;
501 }
502 break;
503 case GDK_B:
504 case GDK_b:
505 if (MOD__SHIFT_ONLY) {
506 nc->shape_editor->break_at_nodes();
507 ret = TRUE;
508 }
509 break;
510 case GDK_J:
511 case GDK_j:
512 if (MOD__SHIFT_ONLY) {
513 nc->shape_editor->join_nodes();
514 ret = TRUE;
515 }
516 break;
517 case GDK_D:
518 case GDK_d:
519 if (MOD__SHIFT_ONLY) {
520 nc->shape_editor->duplicate_nodes();
521 ret = TRUE;
522 }
523 break;
524 case GDK_L:
525 case GDK_l:
526 if (MOD__SHIFT_ONLY) {
527 nc->shape_editor->set_type_of_segments(NR_LINETO);
528 ret = TRUE;
529 }
530 break;
531 case GDK_U:
532 case GDK_u:
533 if (MOD__SHIFT_ONLY) {
534 nc->shape_editor->set_type_of_segments(NR_CURVETO);
535 ret = TRUE;
536 }
537 break;
538 case GDK_R:
539 case GDK_r:
540 if (MOD__SHIFT_ONLY) {
541 // FIXME: add top panel button
542 sp_selected_path_reverse();
543 ret = TRUE;
544 }
545 break;
546 case GDK_x:
547 case GDK_X:
548 if (MOD__ALT_ONLY) {
549 desktop->setToolboxFocusTo ("altx-nodes");
550 ret = TRUE;
551 }
552 break;
553 case GDK_Left: // move selection left
554 case GDK_KP_Left:
555 case GDK_KP_4:
556 if (!MOD__CTRL) { // not ctrl
557 gint mul = 1 + gobble_key_events(
558 get_group0_keyval(&event->key), 0); // with any mask
559 if (MOD__ALT) { // alt
560 if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(mul*-10, 0); // shift
561 else nc->shape_editor->move_nodes_screen(mul*-1, 0); // no shift
562 }
563 else { // no alt
564 if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*-10*nudge, 0); // shift
565 else nc->shape_editor->move_nodes(mul*-nudge, 0); // no shift
566 }
567 ret = TRUE;
568 }
569 break;
570 case GDK_Up: // move selection up
571 case GDK_KP_Up:
572 case GDK_KP_8:
573 if (!MOD__CTRL) { // not ctrl
574 gint mul = 1 + gobble_key_events(
575 get_group0_keyval(&event->key), 0); // with any mask
576 if (MOD__ALT) { // alt
577 if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(0, mul*10); // shift
578 else nc->shape_editor->move_nodes_screen(0, mul*1); // no shift
579 }
580 else { // no alt
581 if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*10*nudge); // shift
582 else nc->shape_editor->move_nodes(0, mul*nudge); // no shift
583 }
584 ret = TRUE;
585 }
586 break;
587 case GDK_Right: // move selection right
588 case GDK_KP_Right:
589 case GDK_KP_6:
590 if (!MOD__CTRL) { // not ctrl
591 gint mul = 1 + gobble_key_events(
592 get_group0_keyval(&event->key), 0); // with any mask
593 if (MOD__ALT) { // alt
594 if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(mul*10, 0); // shift
595 else nc->shape_editor->move_nodes_screen(mul*1, 0); // no shift
596 }
597 else { // no alt
598 if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*10*nudge, 0); // shift
599 else nc->shape_editor->move_nodes(mul*nudge, 0); // no shift
600 }
601 ret = TRUE;
602 }
603 break;
604 case GDK_Down: // move selection down
605 case GDK_KP_Down:
606 case GDK_KP_2:
607 if (!MOD__CTRL) { // not ctrl
608 gint mul = 1 + gobble_key_events(
609 get_group0_keyval(&event->key), 0); // with any mask
610 if (MOD__ALT) { // alt
611 if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(0, mul*-10); // shift
612 else nc->shape_editor->move_nodes_screen(0, mul*-1); // no shift
613 }
614 else { // no alt
615 if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*-10*nudge); // shift
616 else nc->shape_editor->move_nodes(0, mul*-nudge); // no shift
617 }
618 ret = TRUE;
619 }
620 break;
621 case GDK_Escape:
622 {
623 NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();
624 if (b) {
625 Inkscape::Rubberband::get()->stop();
626 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
627 nc->rb_escaped = true;
628 } else {
629 if (nc->shape_editor->has_selection()) {
630 nc->shape_editor->deselect();
631 } else {
632 sp_desktop_selection(desktop)->clear();
633 }
634 }
635 ret = TRUE;
636 break;
637 }
639 case GDK_bracketleft:
640 if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
641 if (nc->leftctrl)
642 nc->shape_editor->rotate_nodes (M_PI/snaps, -1, false);
643 if (nc->rightctrl)
644 nc->shape_editor->rotate_nodes (M_PI/snaps, 1, false);
645 } else if ( MOD__ALT && !MOD__CTRL ) {
646 if (nc->leftalt && nc->rightalt)
647 nc->shape_editor->rotate_nodes (1, 0, true);
648 else {
649 if (nc->leftalt)
650 nc->shape_editor->rotate_nodes (1, -1, true);
651 if (nc->rightalt)
652 nc->shape_editor->rotate_nodes (1, 1, true);
653 }
654 } else if ( snaps != 0 ) {
655 nc->shape_editor->rotate_nodes (M_PI/snaps, 0, false);
656 }
657 ret = TRUE;
658 break;
659 case GDK_bracketright:
660 if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
661 if (nc->leftctrl)
662 nc->shape_editor->rotate_nodes (-M_PI/snaps, -1, false);
663 if (nc->rightctrl)
664 nc->shape_editor->rotate_nodes (-M_PI/snaps, 1, false);
665 } else if ( MOD__ALT && !MOD__CTRL ) {
666 if (nc->leftalt && nc->rightalt)
667 nc->shape_editor->rotate_nodes (-1, 0, true);
668 else {
669 if (nc->leftalt)
670 nc->shape_editor->rotate_nodes (-1, -1, true);
671 if (nc->rightalt)
672 nc->shape_editor->rotate_nodes (-1, 1, true);
673 }
674 } else if ( snaps != 0 ) {
675 nc->shape_editor->rotate_nodes (-M_PI/snaps, 0, false);
676 }
677 ret = TRUE;
678 break;
679 case GDK_less:
680 case GDK_comma:
681 if (MOD__CTRL) {
682 if (nc->leftctrl)
683 nc->shape_editor->scale_nodes(-offset, -1);
684 if (nc->rightctrl)
685 nc->shape_editor->scale_nodes(-offset, 1);
686 } else if (MOD__ALT) {
687 if (nc->leftalt && nc->rightalt)
688 nc->shape_editor->scale_nodes_screen (-1, 0);
689 else {
690 if (nc->leftalt)
691 nc->shape_editor->scale_nodes_screen (-1, -1);
692 if (nc->rightalt)
693 nc->shape_editor->scale_nodes_screen (-1, 1);
694 }
695 } else {
696 nc->shape_editor->scale_nodes (-offset, 0);
697 }
698 ret = TRUE;
699 break;
700 case GDK_greater:
701 case GDK_period:
702 if (MOD__CTRL) {
703 if (nc->leftctrl)
704 nc->shape_editor->scale_nodes (offset, -1);
705 if (nc->rightctrl)
706 nc->shape_editor->scale_nodes (offset, 1);
707 } else if (MOD__ALT) {
708 if (nc->leftalt && nc->rightalt)
709 nc->shape_editor->scale_nodes_screen (1, 0);
710 else {
711 if (nc->leftalt)
712 nc->shape_editor->scale_nodes_screen (1, -1);
713 if (nc->rightalt)
714 nc->shape_editor->scale_nodes_screen (1, 1);
715 }
716 } else {
717 nc->shape_editor->scale_nodes (offset, 0);
718 }
719 ret = TRUE;
720 break;
722 case GDK_Alt_L:
723 nc->leftalt = TRUE;
724 sp_node_context_show_modifier_tip(event_context, event);
725 break;
726 case GDK_Alt_R:
727 nc->rightalt = TRUE;
728 sp_node_context_show_modifier_tip(event_context, event);
729 break;
730 case GDK_Control_L:
731 nc->leftctrl = TRUE;
732 sp_node_context_show_modifier_tip(event_context, event);
733 break;
734 case GDK_Control_R:
735 nc->rightctrl = TRUE;
736 sp_node_context_show_modifier_tip(event_context, event);
737 break;
738 case GDK_Shift_L:
739 case GDK_Shift_R:
740 case GDK_Meta_L:
741 case GDK_Meta_R:
742 sp_node_context_show_modifier_tip(event_context, event);
743 break;
744 default:
745 ret = node_key(event);
746 break;
747 }
748 break;
749 case GDK_KEY_RELEASE:
750 switch (get_group0_keyval(&event->key)) {
751 case GDK_Alt_L:
752 nc->leftalt = FALSE;
753 event_context->defaultMessageContext()->clear();
754 break;
755 case GDK_Alt_R:
756 nc->rightalt = FALSE;
757 event_context->defaultMessageContext()->clear();
758 break;
759 case GDK_Control_L:
760 nc->leftctrl = FALSE;
761 event_context->defaultMessageContext()->clear();
762 break;
763 case GDK_Control_R:
764 nc->rightctrl = FALSE;
765 event_context->defaultMessageContext()->clear();
766 break;
767 case GDK_Shift_L:
768 case GDK_Shift_R:
769 case GDK_Meta_L:
770 case GDK_Meta_R:
771 event_context->defaultMessageContext()->clear();
772 break;
773 }
774 break;
775 default:
776 break;
777 }
779 if (!ret) {
780 if (((SPEventContextClass *) parent_class)->root_handler)
781 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
782 }
784 return ret;
785 }
788 /*
789 Local Variables:
790 mode:c++
791 c-file-style:"stroustrup"
792 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
793 indent-tabs-mode:nil
794 fill-column:99
795 End:
796 */
797 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :