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 "preferences.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 ec->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 ec->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 ec->shape_editor->set_item(item, SH_NODEPATH);
160 ec->shape_editor->set_item(item, SH_KNOTHOLDER);
161 }
163 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
164 if (prefs->getBool("/tools/nodes/selcue")) {
165 ec->enableSelectionCue();
166 }
167 if (prefs->getBool("/tools/nodes/gradientdrag")) {
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 ec->shape_editor->update_statusbar();
176 }
178 static void
179 sp_node_context_flash_path(SPEventContext *event_context, SPItem *item, guint timeout) {
180 SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
182 nc->remove_flash_counter = 3; // for some reason root_handler is called twice after each item_handler...
183 if (nc->flashed_item != item) {
184 // we entered a new item
185 nc->flashed_item = item;
186 SPDesktop *desktop = event_context->desktop;
187 if (nc->flash_tempitem) {
188 desktop->remove_temporary_canvasitem(nc->flash_tempitem);
189 nc->flash_tempitem = NULL;
190 }
192 SPCanvasItem *canvasitem = sp_nodepath_generate_helperpath(desktop, item);
194 if (canvasitem) {
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 SPEventContext *ec = SP_EVENT_CONTEXT(data);
209 // TODO: update ShapeEditorsCollective instead
210 ec->shape_editor->unset_item(SH_NODEPATH);
211 ec->shape_editor->unset_item(SH_KNOTHOLDER);
212 SPItem *item = selection->singleItem();
213 ec->shape_editor->set_item(item, SH_NODEPATH);
214 ec->shape_editor->set_item(item, SH_KNOTHOLDER);
215 ec->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;
232 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
234 if (prefs->getBool("/tools/nodes/pathflash_enabled")) {
235 if (prefs->getBool("/tools/nodes/pathflash_unselected")) {
236 SPDesktop *desktop = event_context->desktop;
237 ShapeEditor* se = event_context->shape_editor;
238 Inkscape::Selection *selection = sp_desktop_selection (desktop);
239 if (se->has_nodepath() && selection->singleItem()) {
240 return ret;
241 }
242 }
243 if (SP_IS_LPE_ITEM(item)) {
244 Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item));
245 if (lpe && (lpe->providesOwnFlashPaths() ||
246 lpe->pathFlashType() == Inkscape::LivePathEffect::SUPPRESS_FLASH)) {
247 // path should be suppressed or permanent; this is handled in
248 // sp_node_context_selection_changed()
249 return ret;
250 }
251 }
252 guint timeout = prefs->getInt("/tools/nodes/pathflash_timeout", 500);
253 sp_node_context_flash_path(event_context, item, timeout);
254 }
256 if (((SPEventContextClass *) parent_class)->item_handler)
257 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
259 return ret;
260 }
262 static gint
263 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
264 {
265 SPDesktop *desktop = event_context->desktop;
266 ShapeEditor* se = event_context->shape_editor;
267 Inkscape::Selection *selection = sp_desktop_selection (desktop);
268 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
270 SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
271 double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
272 event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); // read every time, to make prefs changes really live
273 int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
274 double const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
276 if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
277 desktop->remove_temporary_canvasitem(nc->flash_tempitem);
278 nc->flash_tempitem = NULL;
279 nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
280 } else {
281 nc->remove_flash_counter--;
282 }
284 sp_event_context_snap_window_open(event_context, false); // Just put the snap window open, bluntly. Will be closed when we have left the context
286 gint ret = FALSE;
287 switch (event->type) {
288 case GDK_BUTTON_PRESS:
289 if (event->button.button == 1 && !event_context->space_panning) {
290 // save drag origin
291 event_context->xp = (gint) event->button.x;
292 event_context->yp = (gint) event->button.y;
293 event_context->within_tolerance = true;
294 se->cancel_hit();
296 if (!(event->button.state & GDK_SHIFT_MASK)) {
297 if (!nc->drag) {
298 if (se->has_nodepath() && selection->single() /* && item_over */) {
299 // save drag origin
300 bool over_stroke = se->is_over_stroke(Geom::Point(event->button.x, event->button.y), true);
301 //only dragging curves
302 if (over_stroke) {
303 ret = TRUE;
304 break;
305 }
306 }
307 }
308 }
309 Geom::Point const button_w(event->button.x,
310 event->button.y);
311 Geom::Point const button_dt(desktop->w2d(button_w));
312 Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);
313 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
314 desktop->updateNow();
315 ret = TRUE;
316 }
317 break;
318 case GDK_MOTION_NOTIFY:
319 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
321 if ( event_context->within_tolerance
322 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
323 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
324 break; // do not drag if we're within tolerance from origin
325 }
327 // The path went away while dragging; throw away any further motion
328 // events until the mouse pointer is released.
330 if (se->hits_curve() && !se->has_nodepath()) {
331 break;
332 }
334 // Once the user has moved farther than tolerance from the original location
335 // (indicating they intend to move the object, not click), then always process the
336 // motion notify coordinates as given (no snapping back to origin)
337 event_context->within_tolerance = false;
339 // Once we determine what the user is doing (dragging either a node or the
340 // selection rubberband), make sure we continue to perform that operation
341 // until the mouse pointer is lifted.
342 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
343 if (se->hits_curve() && se->has_nodepath()) {
344 nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
345 } else {
346 nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
347 }
348 }
350 switch (nc->current_state) {
351 case SP_NODE_CONTEXT_NODE_DRAGGING:
352 {
353 se->curve_drag (event->motion.x, event->motion.y);
355 gobble_motion_events(GDK_BUTTON1_MASK);
356 break;
357 }
358 case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
359 if (Inkscape::Rubberband::get(desktop)->is_started()) {
360 Geom::Point const motion_w(event->motion.x,
361 event->motion.y);
362 Geom::Point const motion_dt(desktop->w2d(motion_w));
363 Inkscape::Rubberband::get(desktop)->move(motion_dt);
364 }
365 break;
366 }
368 nc->drag = TRUE;
369 ret = TRUE;
370 } else {
371 if (!se->has_nodepath() || selection->singleItem() == NULL) {
372 break;
373 }
375 bool over_stroke = false;
376 over_stroke = se->is_over_stroke(Geom::Point(event->motion.x, event->motion.y), false);
378 if (nc->cursor_drag && !over_stroke) {
379 event_context->cursor_shape = cursor_node_xpm;
380 event_context->hot_x = 1;
381 event_context->hot_y = 1;
382 sp_event_context_update_cursor(event_context);
383 nc->cursor_drag = false;
384 } else if (!nc->cursor_drag && over_stroke) {
385 event_context->cursor_shape = cursor_node_d_xpm;
386 event_context->hot_x = 1;
387 event_context->hot_y = 1;
388 sp_event_context_update_cursor(event_context);
389 nc->cursor_drag = true;
390 }
391 }
392 break;
394 case GDK_2BUTTON_PRESS:
395 case GDK_BUTTON_RELEASE:
396 if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
397 // find out clicked item, disregarding groups, honoring Alt
398 SPItem *item_clicked = sp_event_context_find_item (desktop,
399 Geom::Point(event->button.x, event->button.y),
400 (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
402 event_context->xp = event_context->yp = 0;
404 bool over_stroke = false;
405 if (se->has_nodepath()) {
406 over_stroke = se->is_over_stroke(Geom::Point(event->button.x, event->button.y), false);
407 }
409 if (item_clicked || over_stroke) {
410 if (over_stroke || nc->added_node) {
411 switch (event->type) {
412 case GDK_BUTTON_RELEASE:
413 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
414 //add a node
415 se->add_node_near_point();
416 } else {
417 if (nc->added_node) { // we just received double click, ignore release
418 nc->added_node = false;
419 break;
420 }
421 //select the segment
422 if (event->button.state & GDK_SHIFT_MASK) {
423 se->select_segment_near_point(true);
424 } else {
425 se->select_segment_near_point(false);
426 }
427 desktop->updateNow();
428 }
429 break;
430 case GDK_2BUTTON_PRESS:
431 //add a node
432 se->add_node_near_point();
433 nc->added_node = true;
434 break;
435 default:
436 break;
437 }
438 } else if (event->button.state & GDK_SHIFT_MASK) {
439 selection->toggle(item_clicked);
440 desktop->updateNow();
441 } else {
442 selection->set(item_clicked);
443 desktop->updateNow();
444 }
445 Inkscape::Rubberband::get(desktop)->stop();
446 ret = TRUE;
447 break;
448 }
449 }
450 if (event->type == GDK_BUTTON_RELEASE) {
451 event_context->xp = event_context->yp = 0;
452 if (event->button.button == 1) {
453 Geom::OptRect b = Inkscape::Rubberband::get(desktop)->getRectangle();
455 if (se->hits_curve() && !event_context->within_tolerance) { //drag curve
456 se->finish_drag();
457 } else if (b && !event_context->within_tolerance) { // drag to select
458 se->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
459 } else {
460 if (!(nc->rb_escaped)) { // unless something was canceled
461 if (se->has_selection())
462 se->deselect();
463 else
464 sp_desktop_selection(desktop)->clear();
465 }
466 }
467 ret = TRUE;
468 Inkscape::Rubberband::get(desktop)->stop();
469 desktop->updateNow();
470 nc->rb_escaped = false;
471 nc->drag = FALSE;
472 se->cancel_hit();
473 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
474 }
475 }
476 break;
477 case GDK_KEY_PRESS:
478 switch (get_group0_keyval(&event->key)) {
479 case GDK_Insert:
480 case GDK_KP_Insert:
481 // with any modifiers
482 se->add_node();
483 ret = TRUE;
484 break;
485 case GDK_I:
486 case GDK_i:
487 // apple keyboards have no Insert
488 if (MOD__SHIFT_ONLY) {
489 se->add_node();
490 ret = TRUE;
491 }
492 break;
493 case GDK_Delete:
494 case GDK_KP_Delete:
495 case GDK_BackSpace:
496 if (MOD__CTRL_ONLY) {
497 se->delete_nodes();
498 } else {
499 se->delete_nodes_preserving_shape();
500 }
501 ret = TRUE;
502 break;
503 case GDK_C:
504 case GDK_c:
505 if (MOD__SHIFT_ONLY) {
506 se->set_node_type(Inkscape::NodePath::NODE_CUSP);
507 ret = TRUE;
508 }
509 break;
510 case GDK_S:
511 case GDK_s:
512 if (MOD__SHIFT_ONLY) {
513 se->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
514 ret = TRUE;
515 }
516 break;
517 case GDK_A:
518 case GDK_a:
519 if (MOD__SHIFT_ONLY) {
520 se->set_node_type(Inkscape::NodePath::NODE_AUTO);
521 ret = TRUE;
522 }
523 break;
524 case GDK_Y:
525 case GDK_y:
526 if (MOD__SHIFT_ONLY) {
527 se->set_node_type(Inkscape::NodePath::NODE_SYMM);
528 ret = TRUE;
529 }
530 break;
531 case GDK_B:
532 case GDK_b:
533 if (MOD__SHIFT_ONLY) {
534 se->break_at_nodes();
535 ret = TRUE;
536 }
537 break;
538 case GDK_J:
539 case GDK_j:
540 if (MOD__SHIFT_ONLY) {
541 se->join_nodes();
542 ret = TRUE;
543 }
544 break;
545 case GDK_D:
546 case GDK_d:
547 if (MOD__SHIFT_ONLY) {
548 se->duplicate_nodes();
549 ret = TRUE;
550 }
551 break;
552 case GDK_L:
553 case GDK_l:
554 if (MOD__SHIFT_ONLY) {
555 se->set_type_of_segments(NR_LINETO);
556 ret = TRUE;
557 }
558 break;
559 case GDK_U:
560 case GDK_u:
561 if (MOD__SHIFT_ONLY) {
562 se->set_type_of_segments(NR_CURVETO);
563 ret = TRUE;
564 }
565 break;
566 case GDK_R:
567 case GDK_r:
568 if (MOD__SHIFT_ONLY) {
569 // FIXME: add top panel button
570 sp_selected_path_reverse(desktop);
571 ret = TRUE;
572 }
573 break;
574 case GDK_x:
575 case GDK_X:
576 if (MOD__ALT_ONLY) {
577 desktop->setToolboxFocusTo ("altx-nodes");
578 ret = TRUE;
579 }
580 break;
581 case GDK_Left: // move selection left
582 case GDK_KP_Left:
583 case GDK_KP_4:
584 if (!MOD__CTRL) { // not ctrl
585 gint mul = 1 + gobble_key_events(
586 get_group0_keyval(&event->key), 0); // with any mask
587 if (MOD__ALT) { // alt
588 if (MOD__SHIFT) se->move_nodes_screen(desktop, mul*-10, 0); // shift
589 else se->move_nodes_screen(desktop, mul*-1, 0); // no shift
590 }
591 else { // no alt
592 if (MOD__SHIFT) se->move_nodes(mul*-10*nudge, 0); // shift
593 else se->move_nodes(mul*-nudge, 0); // no shift
594 }
595 ret = TRUE;
596 }
597 break;
598 case GDK_Up: // move selection up
599 case GDK_KP_Up:
600 case GDK_KP_8:
601 if (!MOD__CTRL) { // not ctrl
602 gint mul = 1 + gobble_key_events(
603 get_group0_keyval(&event->key), 0); // with any mask
604 if (MOD__ALT) { // alt
605 if (MOD__SHIFT) se->move_nodes_screen(desktop, 0, mul*10); // shift
606 else se->move_nodes_screen(desktop, 0, mul*1); // no shift
607 }
608 else { // no alt
609 if (MOD__SHIFT) se->move_nodes(0, mul*10*nudge); // shift
610 else se->move_nodes(0, mul*nudge); // no shift
611 }
612 ret = TRUE;
613 }
614 break;
615 case GDK_Right: // move selection right
616 case GDK_KP_Right:
617 case GDK_KP_6:
618 if (!MOD__CTRL) { // not ctrl
619 gint mul = 1 + gobble_key_events(
620 get_group0_keyval(&event->key), 0); // with any mask
621 if (MOD__ALT) { // alt
622 if (MOD__SHIFT) se->move_nodes_screen(desktop, mul*10, 0); // shift
623 else se->move_nodes_screen(desktop, mul*1, 0); // no shift
624 }
625 else { // no alt
626 if (MOD__SHIFT) se->move_nodes(mul*10*nudge, 0); // shift
627 else se->move_nodes(mul*nudge, 0); // no shift
628 }
629 ret = TRUE;
630 }
631 break;
632 case GDK_Down: // move selection down
633 case GDK_KP_Down:
634 case GDK_KP_2:
635 if (!MOD__CTRL) { // not ctrl
636 gint mul = 1 + gobble_key_events(
637 get_group0_keyval(&event->key), 0); // with any mask
638 if (MOD__ALT) { // alt
639 if (MOD__SHIFT) se->move_nodes_screen(desktop, 0, mul*-10); // shift
640 else se->move_nodes_screen(desktop, 0, mul*-1); // no shift
641 }
642 else { // no alt
643 if (MOD__SHIFT) se->move_nodes(0, mul*-10*nudge); // shift
644 else se->move_nodes(0, mul*-nudge); // no shift
645 }
646 ret = TRUE;
647 }
648 break;
649 case GDK_Escape:
650 {
651 Geom::OptRect const b = Inkscape::Rubberband::get(desktop)->getRectangle();
652 if (b) {
653 Inkscape::Rubberband::get(desktop)->stop();
654 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
655 nc->rb_escaped = true;
656 } else {
657 if (se->has_selection()) {
658 se->deselect();
659 } else {
660 sp_desktop_selection(desktop)->clear();
661 }
662 }
663 ret = TRUE;
664 break;
665 }
667 case GDK_bracketleft:
668 if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
669 if (nc->leftctrl)
670 se->rotate_nodes (M_PI/snaps, -1, false);
671 if (nc->rightctrl)
672 se->rotate_nodes (M_PI/snaps, 1, false);
673 } else if ( MOD__ALT && !MOD__CTRL ) {
674 if (nc->leftalt && nc->rightalt)
675 se->rotate_nodes (1, 0, true);
676 else {
677 if (nc->leftalt)
678 se->rotate_nodes (1, -1, true);
679 if (nc->rightalt)
680 se->rotate_nodes (1, 1, true);
681 }
682 } else if ( snaps != 0 ) {
683 se->rotate_nodes (M_PI/snaps, 0, false);
684 }
685 ret = TRUE;
686 break;
687 case GDK_bracketright:
688 if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
689 if (nc->leftctrl)
690 se->rotate_nodes (-M_PI/snaps, -1, false);
691 if (nc->rightctrl)
692 se->rotate_nodes (-M_PI/snaps, 1, false);
693 } else if ( MOD__ALT && !MOD__CTRL ) {
694 if (nc->leftalt && nc->rightalt)
695 se->rotate_nodes (-1, 0, true);
696 else {
697 if (nc->leftalt)
698 se->rotate_nodes (-1, -1, true);
699 if (nc->rightalt)
700 se->rotate_nodes (-1, 1, true);
701 }
702 } else if ( snaps != 0 ) {
703 se->rotate_nodes (-M_PI/snaps, 0, false);
704 }
705 ret = TRUE;
706 break;
707 case GDK_less:
708 case GDK_comma:
709 if (MOD__CTRL) {
710 if (nc->leftctrl)
711 se->scale_nodes(-offset, -1);
712 if (nc->rightctrl)
713 se->scale_nodes(-offset, 1);
714 } else if (MOD__ALT) {
715 if (nc->leftalt && nc->rightalt)
716 se->scale_nodes_screen (-1, 0);
717 else {
718 if (nc->leftalt)
719 se->scale_nodes_screen (-1, -1);
720 if (nc->rightalt)
721 se->scale_nodes_screen (-1, 1);
722 }
723 } else {
724 se->scale_nodes (-offset, 0);
725 }
726 ret = TRUE;
727 break;
728 case GDK_greater:
729 case GDK_period:
730 if (MOD__CTRL) {
731 if (nc->leftctrl)
732 se->scale_nodes (offset, -1);
733 if (nc->rightctrl)
734 se->scale_nodes (offset, 1);
735 } else if (MOD__ALT) {
736 if (nc->leftalt && nc->rightalt)
737 se->scale_nodes_screen (1, 0);
738 else {
739 if (nc->leftalt)
740 se->scale_nodes_screen (1, -1);
741 if (nc->rightalt)
742 se->scale_nodes_screen (1, 1);
743 }
744 } else {
745 se->scale_nodes (offset, 0);
746 }
747 ret = TRUE;
748 break;
750 case GDK_Alt_L:
751 nc->leftalt = TRUE;
752 sp_node_context_show_modifier_tip(event_context, event);
753 break;
754 case GDK_Alt_R:
755 nc->rightalt = TRUE;
756 sp_node_context_show_modifier_tip(event_context, event);
757 break;
758 case GDK_Control_L:
759 nc->leftctrl = TRUE;
760 sp_node_context_show_modifier_tip(event_context, event);
761 break;
762 case GDK_Control_R:
763 nc->rightctrl = TRUE;
764 sp_node_context_show_modifier_tip(event_context, event);
765 break;
766 case GDK_Shift_L:
767 case GDK_Shift_R:
768 case GDK_Meta_L:
769 case GDK_Meta_R:
770 sp_node_context_show_modifier_tip(event_context, event);
771 break;
772 default:
773 ret = node_key(event);
774 break;
775 }
776 break;
777 case GDK_KEY_RELEASE:
778 switch (get_group0_keyval(&event->key)) {
779 case GDK_Alt_L:
780 nc->leftalt = FALSE;
781 event_context->defaultMessageContext()->clear();
782 break;
783 case GDK_Alt_R:
784 nc->rightalt = FALSE;
785 event_context->defaultMessageContext()->clear();
786 break;
787 case GDK_Control_L:
788 nc->leftctrl = FALSE;
789 event_context->defaultMessageContext()->clear();
790 break;
791 case GDK_Control_R:
792 nc->rightctrl = FALSE;
793 event_context->defaultMessageContext()->clear();
794 break;
795 case GDK_Shift_L:
796 case GDK_Shift_R:
797 case GDK_Meta_L:
798 case GDK_Meta_R:
799 event_context->defaultMessageContext()->clear();
800 break;
801 }
802 break;
803 default:
804 break;
805 }
807 if (!ret) {
808 if (((SPEventContextClass *) parent_class)->root_handler)
809 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
810 }
812 return ret;
813 }
816 /*
817 Local Variables:
818 mode:c++
819 c-file-style:"stroustrup"
820 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
821 indent-tabs-mode:nil
822 fill-column:99
823 End:
824 */
825 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :