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();
233 SPDesktop *desktop = event_context->desktop;
235 switch (event->type) {
236 case GDK_MOTION_NOTIFY:
237 {
238 // find out actual item we're over, disregarding groups
239 SPItem *actual_item = sp_event_context_find_item (desktop,
240 Geom::Point(event->button.x, event->button.y), FALSE, TRUE);
241 if (!actual_item)
242 break;
245 if (prefs->getBool("/tools/nodes/pathflash_enabled")) {
246 if (prefs->getBool("/tools/nodes/pathflash_unselected")) {
247 // do not flash if we have some path selected and a single item in selection (i.e. it
248 // is the same path that we're editing)
249 SPDesktop *desktop = event_context->desktop;
250 ShapeEditor* se = event_context->shape_editor;
251 Inkscape::Selection *selection = sp_desktop_selection (desktop);
252 if (se->has_nodepath() && selection->singleItem()) {
253 break;
254 }
255 }
256 if (SP_IS_LPE_ITEM(actual_item)) {
257 Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(actual_item));
258 if (lpe && (lpe->providesOwnFlashPaths() ||
259 lpe->pathFlashType() == Inkscape::LivePathEffect::SUPPRESS_FLASH)) {
260 // path should be suppressed or permanent; this is handled in
261 // sp_node_context_selection_changed()
262 break;
263 }
264 }
265 guint timeout = prefs->getInt("/tools/nodes/pathflash_timeout", 500);
266 sp_node_context_flash_path(event_context, actual_item, timeout);
267 }
268 }
269 break;
271 default:
272 break;
273 }
275 if (((SPEventContextClass *) parent_class)->item_handler)
276 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
278 return ret;
279 }
281 static gint
282 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
283 {
284 SPDesktop *desktop = event_context->desktop;
285 ShapeEditor* se = event_context->shape_editor;
286 Inkscape::Selection *selection = sp_desktop_selection (desktop);
287 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
289 SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
290 double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
291 event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); // read every time, to make prefs changes really live
292 int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
293 double const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
295 if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
296 desktop->remove_temporary_canvasitem(nc->flash_tempitem);
297 nc->flash_tempitem = NULL;
298 nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
299 } else {
300 nc->remove_flash_counter--;
301 }
303 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
305 gint ret = FALSE;
306 switch (event->type) {
307 case GDK_BUTTON_PRESS:
308 if (event->button.button == 1 && !event_context->space_panning) {
309 // save drag origin
310 event_context->xp = (gint) event->button.x;
311 event_context->yp = (gint) event->button.y;
312 event_context->within_tolerance = true;
313 se->cancel_hit();
315 if (!(event->button.state & GDK_SHIFT_MASK)) {
316 if (!nc->drag) {
317 if (se->has_nodepath() && selection->single() /* && item_over */) {
318 // save drag origin
319 bool over_stroke = se->is_over_stroke(Geom::Point(event->button.x, event->button.y), true);
320 //only dragging curves
321 if (over_stroke) {
322 ret = TRUE;
323 break;
324 }
325 }
326 }
327 }
328 Geom::Point const button_w(event->button.x,
329 event->button.y);
330 Geom::Point const button_dt(desktop->w2d(button_w));
331 Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);
332 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
333 desktop->updateNow();
334 ret = TRUE;
335 }
336 break;
337 case GDK_MOTION_NOTIFY:
338 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
340 if ( event_context->within_tolerance
341 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
342 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
343 break; // do not drag if we're within tolerance from origin
344 }
346 // The path went away while dragging; throw away any further motion
347 // events until the mouse pointer is released.
349 if (se->hits_curve() && !se->has_nodepath()) {
350 break;
351 }
353 // Once the user has moved farther than tolerance from the original location
354 // (indicating they intend to move the object, not click), then always process the
355 // motion notify coordinates as given (no snapping back to origin)
356 event_context->within_tolerance = false;
358 // Once we determine what the user is doing (dragging either a node or the
359 // selection rubberband), make sure we continue to perform that operation
360 // until the mouse pointer is lifted.
361 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
362 if (se->hits_curve() && se->has_nodepath()) {
363 nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
364 } else {
365 nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
366 }
367 }
369 switch (nc->current_state) {
370 case SP_NODE_CONTEXT_NODE_DRAGGING:
371 {
372 se->curve_drag (event->motion.x, event->motion.y);
374 gobble_motion_events(GDK_BUTTON1_MASK);
375 break;
376 }
377 case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
378 if (Inkscape::Rubberband::get(desktop)->is_started()) {
379 Geom::Point const motion_w(event->motion.x,
380 event->motion.y);
381 Geom::Point const motion_dt(desktop->w2d(motion_w));
382 Inkscape::Rubberband::get(desktop)->move(motion_dt);
383 }
384 break;
385 }
387 nc->drag = TRUE;
388 ret = TRUE;
389 } else {
390 if (!se->has_nodepath() || selection->singleItem() == NULL) {
391 break;
392 }
394 bool over_stroke = false;
395 over_stroke = se->is_over_stroke(Geom::Point(event->motion.x, event->motion.y), false);
397 if (nc->cursor_drag && !over_stroke) {
398 event_context->cursor_shape = cursor_node_xpm;
399 event_context->hot_x = 1;
400 event_context->hot_y = 1;
401 sp_event_context_update_cursor(event_context);
402 nc->cursor_drag = false;
403 } else if (!nc->cursor_drag && over_stroke) {
404 event_context->cursor_shape = cursor_node_d_xpm;
405 event_context->hot_x = 1;
406 event_context->hot_y = 1;
407 sp_event_context_update_cursor(event_context);
408 nc->cursor_drag = true;
409 }
410 }
411 break;
413 case GDK_2BUTTON_PRESS:
414 case GDK_BUTTON_RELEASE:
415 if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
416 // find out clicked item, disregarding groups, honoring Alt
417 SPItem *item_clicked = sp_event_context_find_item (desktop,
418 Geom::Point(event->button.x, event->button.y),
419 (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
421 event_context->xp = event_context->yp = 0;
423 bool over_stroke = false;
424 if (se->has_nodepath()) {
425 over_stroke = se->is_over_stroke(Geom::Point(event->button.x, event->button.y), false);
426 }
428 if (item_clicked || over_stroke) {
429 if (over_stroke || nc->added_node) {
430 switch (event->type) {
431 case GDK_BUTTON_RELEASE:
432 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
433 //add a node
434 se->add_node_near_point();
435 } else {
436 if (nc->added_node) { // we just received double click, ignore release
437 nc->added_node = false;
438 break;
439 }
440 //select the segment
441 if (event->button.state & GDK_SHIFT_MASK) {
442 se->select_segment_near_point(true);
443 } else {
444 se->select_segment_near_point(false);
445 }
446 desktop->updateNow();
447 }
448 break;
449 case GDK_2BUTTON_PRESS:
450 //add a node
451 se->add_node_near_point();
452 nc->added_node = true;
453 break;
454 default:
455 break;
456 }
457 } else if (event->button.state & GDK_SHIFT_MASK) {
458 selection->toggle(item_clicked);
459 desktop->updateNow();
460 } else {
461 selection->set(item_clicked);
462 desktop->updateNow();
463 }
464 Inkscape::Rubberband::get(desktop)->stop();
465 ret = TRUE;
466 break;
467 }
468 }
469 if (event->type == GDK_BUTTON_RELEASE) {
470 event_context->xp = event_context->yp = 0;
471 if (event->button.button == 1) {
472 Geom::OptRect b = Inkscape::Rubberband::get(desktop)->getRectangle();
474 if (se->hits_curve() && !event_context->within_tolerance) { //drag curve
475 se->finish_drag();
476 } else if (b && !event_context->within_tolerance) { // drag to select
477 se->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
478 } else {
479 if (!(nc->rb_escaped)) { // unless something was canceled
480 if (se->has_selection())
481 se->deselect();
482 else
483 sp_desktop_selection(desktop)->clear();
484 }
485 }
486 ret = TRUE;
487 Inkscape::Rubberband::get(desktop)->stop();
488 desktop->updateNow();
489 nc->rb_escaped = false;
490 nc->drag = FALSE;
491 se->cancel_hit();
492 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
493 }
494 }
495 break;
496 case GDK_KEY_PRESS:
497 switch (get_group0_keyval(&event->key)) {
498 case GDK_Insert:
499 case GDK_KP_Insert:
500 // with any modifiers
501 se->add_node();
502 ret = TRUE;
503 break;
504 case GDK_I:
505 case GDK_i:
506 // apple keyboards have no Insert
507 if (MOD__SHIFT_ONLY) {
508 se->add_node();
509 ret = TRUE;
510 }
511 break;
512 case GDK_Delete:
513 case GDK_KP_Delete:
514 case GDK_BackSpace:
515 if (MOD__CTRL_ONLY) {
516 se->delete_nodes();
517 } else {
518 se->delete_nodes_preserving_shape();
519 }
520 ret = TRUE;
521 break;
522 case GDK_C:
523 case GDK_c:
524 if (MOD__SHIFT_ONLY) {
525 se->set_node_type(Inkscape::NodePath::NODE_CUSP);
526 ret = TRUE;
527 }
528 break;
529 case GDK_S:
530 case GDK_s:
531 if (MOD__SHIFT_ONLY) {
532 se->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
533 ret = TRUE;
534 }
535 break;
536 case GDK_A:
537 case GDK_a:
538 if (MOD__SHIFT_ONLY) {
539 se->set_node_type(Inkscape::NodePath::NODE_AUTO);
540 ret = TRUE;
541 }
542 break;
543 case GDK_Y:
544 case GDK_y:
545 if (MOD__SHIFT_ONLY) {
546 se->set_node_type(Inkscape::NodePath::NODE_SYMM);
547 ret = TRUE;
548 }
549 break;
550 case GDK_B:
551 case GDK_b:
552 if (MOD__SHIFT_ONLY) {
553 se->break_at_nodes();
554 ret = TRUE;
555 }
556 break;
557 case GDK_J:
558 case GDK_j:
559 if (MOD__SHIFT_ONLY) {
560 se->join_nodes();
561 ret = TRUE;
562 }
563 break;
564 case GDK_D:
565 case GDK_d:
566 if (MOD__SHIFT_ONLY) {
567 se->duplicate_nodes();
568 ret = TRUE;
569 }
570 break;
571 case GDK_L:
572 case GDK_l:
573 if (MOD__SHIFT_ONLY) {
574 se->set_type_of_segments(NR_LINETO);
575 ret = TRUE;
576 }
577 break;
578 case GDK_U:
579 case GDK_u:
580 if (MOD__SHIFT_ONLY) {
581 se->set_type_of_segments(NR_CURVETO);
582 ret = TRUE;
583 }
584 break;
585 case GDK_R:
586 case GDK_r:
587 if (MOD__SHIFT_ONLY) {
588 // FIXME: add top panel button
589 sp_selected_path_reverse(desktop);
590 ret = TRUE;
591 }
592 break;
593 case GDK_x:
594 case GDK_X:
595 if (MOD__ALT_ONLY) {
596 desktop->setToolboxFocusTo ("altx-nodes");
597 ret = TRUE;
598 }
599 break;
600 case GDK_Left: // move selection left
601 case GDK_KP_Left:
602 case GDK_KP_4:
603 if (!MOD__CTRL) { // not ctrl
604 gint mul = 1 + gobble_key_events(
605 get_group0_keyval(&event->key), 0); // with any mask
606 if (MOD__ALT) { // alt
607 if (MOD__SHIFT) se->move_nodes_screen(desktop, mul*-10, 0); // shift
608 else se->move_nodes_screen(desktop, mul*-1, 0); // no shift
609 }
610 else { // no alt
611 if (MOD__SHIFT) se->move_nodes(mul*-10*nudge, 0); // shift
612 else se->move_nodes(mul*-nudge, 0); // no shift
613 }
614 ret = TRUE;
615 }
616 break;
617 case GDK_Up: // move selection up
618 case GDK_KP_Up:
619 case GDK_KP_8:
620 if (!MOD__CTRL) { // not ctrl
621 gint mul = 1 + gobble_key_events(
622 get_group0_keyval(&event->key), 0); // with any mask
623 if (MOD__ALT) { // alt
624 if (MOD__SHIFT) se->move_nodes_screen(desktop, 0, mul*10); // shift
625 else se->move_nodes_screen(desktop, 0, mul*1); // no shift
626 }
627 else { // no alt
628 if (MOD__SHIFT) se->move_nodes(0, mul*10*nudge); // shift
629 else se->move_nodes(0, mul*nudge); // no shift
630 }
631 ret = TRUE;
632 }
633 break;
634 case GDK_Right: // move selection right
635 case GDK_KP_Right:
636 case GDK_KP_6:
637 if (!MOD__CTRL) { // not ctrl
638 gint mul = 1 + gobble_key_events(
639 get_group0_keyval(&event->key), 0); // with any mask
640 if (MOD__ALT) { // alt
641 if (MOD__SHIFT) se->move_nodes_screen(desktop, mul*10, 0); // shift
642 else se->move_nodes_screen(desktop, mul*1, 0); // no shift
643 }
644 else { // no alt
645 if (MOD__SHIFT) se->move_nodes(mul*10*nudge, 0); // shift
646 else se->move_nodes(mul*nudge, 0); // no shift
647 }
648 ret = TRUE;
649 }
650 break;
651 case GDK_Down: // move selection down
652 case GDK_KP_Down:
653 case GDK_KP_2:
654 if (!MOD__CTRL) { // not ctrl
655 gint mul = 1 + gobble_key_events(
656 get_group0_keyval(&event->key), 0); // with any mask
657 if (MOD__ALT) { // alt
658 if (MOD__SHIFT) se->move_nodes_screen(desktop, 0, mul*-10); // shift
659 else se->move_nodes_screen(desktop, 0, mul*-1); // no shift
660 }
661 else { // no alt
662 if (MOD__SHIFT) se->move_nodes(0, mul*-10*nudge); // shift
663 else se->move_nodes(0, mul*-nudge); // no shift
664 }
665 ret = TRUE;
666 }
667 break;
668 case GDK_Escape:
669 {
670 Geom::OptRect const b = Inkscape::Rubberband::get(desktop)->getRectangle();
671 if (b) {
672 Inkscape::Rubberband::get(desktop)->stop();
673 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
674 nc->rb_escaped = true;
675 } else {
676 if (se->has_selection()) {
677 se->deselect();
678 } else {
679 sp_desktop_selection(desktop)->clear();
680 }
681 }
682 ret = TRUE;
683 break;
684 }
686 case GDK_bracketleft:
687 if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
688 if (nc->leftctrl)
689 se->rotate_nodes (M_PI/snaps, -1, false);
690 if (nc->rightctrl)
691 se->rotate_nodes (M_PI/snaps, 1, false);
692 } else if ( MOD__ALT && !MOD__CTRL ) {
693 if (nc->leftalt && nc->rightalt)
694 se->rotate_nodes (1, 0, true);
695 else {
696 if (nc->leftalt)
697 se->rotate_nodes (1, -1, true);
698 if (nc->rightalt)
699 se->rotate_nodes (1, 1, true);
700 }
701 } else if ( snaps != 0 ) {
702 se->rotate_nodes (M_PI/snaps, 0, false);
703 }
704 ret = TRUE;
705 break;
706 case GDK_bracketright:
707 if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
708 if (nc->leftctrl)
709 se->rotate_nodes (-M_PI/snaps, -1, false);
710 if (nc->rightctrl)
711 se->rotate_nodes (-M_PI/snaps, 1, false);
712 } else if ( MOD__ALT && !MOD__CTRL ) {
713 if (nc->leftalt && nc->rightalt)
714 se->rotate_nodes (-1, 0, true);
715 else {
716 if (nc->leftalt)
717 se->rotate_nodes (-1, -1, true);
718 if (nc->rightalt)
719 se->rotate_nodes (-1, 1, true);
720 }
721 } else if ( snaps != 0 ) {
722 se->rotate_nodes (-M_PI/snaps, 0, false);
723 }
724 ret = TRUE;
725 break;
726 case GDK_less:
727 case GDK_comma:
728 if (MOD__CTRL) {
729 if (nc->leftctrl)
730 se->scale_nodes(-offset, -1);
731 if (nc->rightctrl)
732 se->scale_nodes(-offset, 1);
733 } else if (MOD__ALT) {
734 if (nc->leftalt && nc->rightalt)
735 se->scale_nodes_screen (-1, 0);
736 else {
737 if (nc->leftalt)
738 se->scale_nodes_screen (-1, -1);
739 if (nc->rightalt)
740 se->scale_nodes_screen (-1, 1);
741 }
742 } else {
743 se->scale_nodes (-offset, 0);
744 }
745 ret = TRUE;
746 break;
747 case GDK_greater:
748 case GDK_period:
749 if (MOD__CTRL) {
750 if (nc->leftctrl)
751 se->scale_nodes (offset, -1);
752 if (nc->rightctrl)
753 se->scale_nodes (offset, 1);
754 } else if (MOD__ALT) {
755 if (nc->leftalt && nc->rightalt)
756 se->scale_nodes_screen (1, 0);
757 else {
758 if (nc->leftalt)
759 se->scale_nodes_screen (1, -1);
760 if (nc->rightalt)
761 se->scale_nodes_screen (1, 1);
762 }
763 } else {
764 se->scale_nodes (offset, 0);
765 }
766 ret = TRUE;
767 break;
769 case GDK_Alt_L:
770 nc->leftalt = TRUE;
771 sp_node_context_show_modifier_tip(event_context, event);
772 break;
773 case GDK_Alt_R:
774 nc->rightalt = TRUE;
775 sp_node_context_show_modifier_tip(event_context, event);
776 break;
777 case GDK_Control_L:
778 nc->leftctrl = TRUE;
779 sp_node_context_show_modifier_tip(event_context, event);
780 break;
781 case GDK_Control_R:
782 nc->rightctrl = TRUE;
783 sp_node_context_show_modifier_tip(event_context, event);
784 break;
785 case GDK_Shift_L:
786 case GDK_Shift_R:
787 case GDK_Meta_L:
788 case GDK_Meta_R:
789 sp_node_context_show_modifier_tip(event_context, event);
790 break;
791 default:
792 ret = node_key(event);
793 break;
794 }
795 break;
796 case GDK_KEY_RELEASE:
797 switch (get_group0_keyval(&event->key)) {
798 case GDK_Alt_L:
799 nc->leftalt = FALSE;
800 event_context->defaultMessageContext()->clear();
801 break;
802 case GDK_Alt_R:
803 nc->rightalt = FALSE;
804 event_context->defaultMessageContext()->clear();
805 break;
806 case GDK_Control_L:
807 nc->leftctrl = FALSE;
808 event_context->defaultMessageContext()->clear();
809 break;
810 case GDK_Control_R:
811 nc->rightctrl = FALSE;
812 event_context->defaultMessageContext()->clear();
813 break;
814 case GDK_Shift_L:
815 case GDK_Shift_R:
816 case GDK_Meta_L:
817 case GDK_Meta_R:
818 event_context->defaultMessageContext()->clear();
819 break;
820 }
821 break;
822 default:
823 break;
824 }
826 if (!ret) {
827 if (((SPEventContextClass *) parent_class)->root_handler)
828 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
829 }
831 return ret;
832 }
835 /*
836 Local Variables:
837 mode:c++
838 c-file-style:"stroustrup"
839 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
840 indent-tabs-mode:nil
841 fill-column:99
842 End:
843 */
844 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :