src/node-context.cpp

   1 #define __SP_NODE_CONTEXT_C__
   2
   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  */
  12
  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"
  39
  40 #include "sp-lpe-item.h"
  41
  42 // needed for flash nodepath upon mouseover:
  43 #include "display/canvas-bpath.h"
  44 #include "display/curve.h"
  45
  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);
  49
  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);
  54
  55 static SPEventContextClass *parent_class;
  56
  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 }
  76
  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;
  82
  83     parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
  84
  85     object_class->dispose = sp_node_context_dispose;
  86
  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 }
  91
  92 static void
  93 sp_node_context_init(SPNodeContext *node_context)
  94 {
  95     SPEventContext *event_context = SP_EVENT_CONTEXT(node_context);
  96
  97     event_context->cursor_shape = cursor_node_xpm;
  98     event_context->hot_x = 1;
  99     event_context->hot_y = 1;
 100
 101     node_context->leftalt = FALSE;
 102     node_context->rightalt = FALSE;
 103     node_context->leftctrl = FALSE;
 104     node_context->rightctrl = FALSE;
 105
 106     new (&node_context->sel_changed_connection) sigc::connection();
 107
 108     node_context->flash_tempitem = NULL;
 109     node_context->flashed_item = NULL;
 110     node_context->remove_flash_counter = 0;
 111 }
 112
 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);
 118
 119     ec->enableGrDrag(false);
 120
 121     nc->sel_changed_connection.disconnect();
 122     nc->sel_changed_connection.~connection();
 123
 124     delete nc->shape_editor;
 125
 126     if (nc->_node_message_context) {
 127         delete nc->_node_message_context;
 128     }
 129
 130     G_OBJECT_CLASS(parent_class)->dispose(object);
 131 }
 132
 133 static void
 134 sp_node_context_setup(SPEventContext *ec)
 135 {
 136     SPNodeContext *nc = SP_NODE_CONTEXT(ec);
 137
 138     if (((SPEventContextClass *) parent_class)->setup)
 139         ((SPEventContextClass *) parent_class)->setup(ec);
 140
 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));
 145
 146     SPItem *item = selection->singleItem();
 147
 148     nc->shape_editor = new ShapeEditor(ec->desktop);
 149
 150     nc->rb_escaped = false;
 151
 152     nc->cursor_drag = false;
 153
 154     nc->added_node = false;
 155
 156     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 157
 158     if (item) {
 159         nc->shape_editor->set_item(item, SH_NODEPATH);
 160         nc->shape_editor->set_item(item, SH_KNOTHOLDER);
 161     }
 162
 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     }
 170
 171     ec->desktop->emitToolSubselectionChanged(NULL); // sets the coord entry fields to inactive
 172
 173     nc->_node_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 174
 175     nc->shape_editor->update_statusbar();
 176 }
 177
 178 static void
 179 sp_node_context_flash_path(SPEventContext *event_context, SPItem *item, guint timeout) {
 180     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 181
 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         }
 191
 192         SPCanvasItem *canvasitem = NULL;
 193         if (SP_IS_PATH(item)) {
 194             canvasitem = sp_nodepath_helperpath_from_path(desktop, SP_PATH(item));
 195         } else {
 196             g_print ("-----> sp_node_context_flash_path(): TODO: generate the helper path!!\n");
 197         }
 198
 199         if (canvasitem) {
 200             nc->flash_tempitem = desktop->add_temporary_canvasitem (canvasitem, timeout);
 201         }
 202     }
 203 }
 204
 205 /**
 206 \brief  Callback that processes the "changed" signal on the selection;
 207 destroys old and creates new nodepath and reassigns listeners to the new selected item's repr
 208 */
 209 void
 210 sp_node_context_selection_changed(Inkscape::Selection *selection, gpointer data)
 211 {
 212     SPNodeContext *nc = SP_NODE_CONTEXT(data);
 213
 214     // TODO: update ShapeEditorsCollective instead
 215     nc->shape_editor->unset_item(SH_NODEPATH);
 216     nc->shape_editor->unset_item(SH_KNOTHOLDER);
 217     SPItem *item = selection->singleItem();
 218     nc->shape_editor->set_item(item, SH_NODEPATH);
 219     nc->shape_editor->set_item(item, SH_KNOTHOLDER);
 220     nc->shape_editor->update_statusbar();
 221 }
 222
 223 void
 224 sp_node_context_show_modifier_tip(SPEventContext *event_context, GdkEvent *event)
 225 {
 226     sp_event_show_modifier_tip
 227         (event_context->defaultMessageContext(), event,
 228          _("<b>Ctrl</b>: toggle node type, snap handle angle, move hor/vert; <b>Ctrl+Alt</b>: move along handles"),
 229          _("<b>Shift</b>: toggle node selection, disable snapping, rotate both handles"),
 230          _("<b>Alt</b>: lock handle length; <b>Ctrl+Alt</b>: move along handles"));
 231 }
 232
 233 static gint
 234 sp_node_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 235 {
 236     gint ret = FALSE;
 237     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 238
 239     if (prefs->getBool("/tools/nodes/pathflash_enabled")) {
 240         guint timeout = prefs->getInt("/tools/nodes/pathflash_timeout", 500);
 241         if (SP_IS_LPE_ITEM(item)) {
 242             Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item));
 243             if (lpe && (lpe->providesOwnFlashPaths() ||
 244                         lpe->pathFlashType() == Inkscape::LivePathEffect::SUPPRESS_FLASH)) {
 245                 // path should be suppressed or permanent; this is handled in
 246                 // sp_node_context_selection_changed()
 247                 return ret;
 248             }
 249         }
 250         sp_node_context_flash_path(event_context, item, timeout);
 251     }
 252
 253     if (((SPEventContextClass *) parent_class)->item_handler)
 254         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 255
 256     return ret;
 257 }
 258
 259 static gint
 260 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 261 {
 262     SPDesktop *desktop = event_context->desktop;
 263     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 264     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 265
 266     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 267     double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
 268     event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); // read every time, to make prefs changes really live
 269     int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
 270     double const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
 271
 272     if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
 273         desktop->remove_temporary_canvasitem(nc->flash_tempitem);
 274         nc->flash_tempitem = NULL;
 275         nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
 276     } else {
 277         nc->remove_flash_counter--;
 278     }
 279
 280     gint ret = FALSE;
 281     switch (event->type) {
 282         case GDK_BUTTON_PRESS:
 283             if (event->button.button == 1 && !event_context->space_panning) {
 284                 // save drag origin
 285                 event_context->xp = (gint) event->button.x;
 286                 event_context->yp = (gint) event->button.y;
 287                 event_context->within_tolerance = true;
 288                 nc->shape_editor->cancel_hit();
 289
 290                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 291                     if (!nc->drag) {
 292                         if (nc->shape_editor->has_nodepath() && selection->single() /* && item_over */) {
 293                             // save drag origin
 294                             bool over_stroke = nc->shape_editor->is_over_stroke(Geom::Point(event->button.x, event->button.y), true);
 295                             //only dragging curves
 296                             if (over_stroke) {
 297                                 ret = TRUE;
 298                                 break;
 299                             }
 300                         }
 301                     }
 302                 }
 303                 Geom::Point const button_w(event->button.x,
 304                                          event->button.y);
 305                 Geom::Point const button_dt(desktop->w2d(button_w));
 306                 Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);
 307                 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 308                 desktop->updateNow();
 309                 ret = TRUE;
 310             }
 311             break;
 312         case GDK_MOTION_NOTIFY:
 313             if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
 314
 315                 if ( event_context->within_tolerance
 316                      && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 317                      && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 318                     break; // do not drag if we're within tolerance from origin
 319                 }
 320
 321                 // The path went away while dragging; throw away any further motion
 322                 // events until the mouse pointer is released.
 323
 324                 if (nc->shape_editor->hits_curve() && !nc->shape_editor->has_nodepath()) {
 325                   break;
 326                 }
 327
 328                 // Once the user has moved farther than tolerance from the original location
 329                 // (indicating they intend to move the object, not click), then always process the
 330                 // motion notify coordinates as given (no snapping back to origin)
 331                 event_context->within_tolerance = false;
 332
 333                 // Once we determine what the user is doing (dragging either a node or the
 334                 // selection rubberband), make sure we continue to perform that operation
 335                 // until the mouse pointer is lifted.
 336                 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
 337                     if (nc->shape_editor->hits_curve() && nc->shape_editor->has_nodepath()) {
 338                         nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
 339                     } else {
 340                         nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
 341                     }
 342                 }
 343
 344                 switch (nc->current_state) {
 345                     case SP_NODE_CONTEXT_NODE_DRAGGING:
 346                         {
 347                             nc->shape_editor->curve_drag (event->motion.x, event->motion.y);
 348
 349                             gobble_motion_events(GDK_BUTTON1_MASK);
 350                             break;
 351                         }
 352                     case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
 353                         if (Inkscape::Rubberband::get(desktop)->is_started()) {
 354                             Geom::Point const motion_w(event->motion.x,
 355                                                 event->motion.y);
 356                             Geom::Point const motion_dt(desktop->w2d(motion_w));
 357                             Inkscape::Rubberband::get(desktop)->move(motion_dt);
 358                         }
 359                         break;
 360                 }
 361
 362                 nc->drag = TRUE;
 363                 ret = TRUE;
 364             } else {
 365                 if (!nc->shape_editor->has_nodepath() || selection->singleItem() == NULL) {
 366                     break;
 367                 }
 368
 369                 bool over_stroke = false;
 370                 over_stroke = nc->shape_editor->is_over_stroke(Geom::Point(event->motion.x, event->motion.y), false);
 371
 372                 if (nc->cursor_drag && !over_stroke) {
 373                     event_context->cursor_shape = cursor_node_xpm;
 374                     event_context->hot_x = 1;
 375                     event_context->hot_y = 1;
 376                     sp_event_context_update_cursor(event_context);
 377                     nc->cursor_drag = false;
 378                 } else if (!nc->cursor_drag && over_stroke) {
 379                     event_context->cursor_shape = cursor_node_d_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 = true;
 384                 }
 385             }
 386             break;
 387
 388         case GDK_2BUTTON_PRESS:
 389         case GDK_BUTTON_RELEASE:
 390             if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
 391                 // find out clicked item, disregarding groups, honoring Alt
 392                 SPItem *item_clicked = sp_event_context_find_item (desktop,
 393                         Geom::Point(event->button.x, event->button.y),
 394                         (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
 395
 396                 event_context->xp = event_context->yp = 0;
 397
 398                 bool over_stroke = false;
 399                 if (nc->shape_editor->has_nodepath()) {
 400                     over_stroke = nc->shape_editor->is_over_stroke(Geom::Point(event->button.x, event->button.y), false);
 401                 }
 402
 403                 if (item_clicked || over_stroke) {
 404                     if (over_stroke || nc->added_node) {
 405                         switch (event->type) {
 406                             case GDK_BUTTON_RELEASE:
 407                                 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
 408                                     //add a node
 409                                     nc->shape_editor->add_node_near_point();
 410                                 } else {
 411                                     if (nc->added_node) { // we just received double click, ignore release
 412                                         nc->added_node = false;
 413                                         break;
 414                                     }
 415                                     //select the segment
 416                                     if (event->button.state & GDK_SHIFT_MASK) {
 417                                         nc->shape_editor->select_segment_near_point(true);
 418                                     } else {
 419                                         nc->shape_editor->select_segment_near_point(false);
 420                                     }
 421                                     desktop->updateNow();
 422                                 }
 423                                 break;
 424                             case GDK_2BUTTON_PRESS:
 425                                 //add a node
 426                                 nc->shape_editor->add_node_near_point();
 427                                 nc->added_node = true;
 428                                 break;
 429                             default:
 430                                 break;
 431                         }
 432                     } else if (event->button.state & GDK_SHIFT_MASK) {
 433                         selection->toggle(item_clicked);
 434                         desktop->updateNow();
 435                     } else {
 436                         selection->set(item_clicked);
 437                         desktop->updateNow();
 438                     }
 439                     Inkscape::Rubberband::get(desktop)->stop();
 440                     ret = TRUE;
 441                     break;
 442                 }
 443             }
 444             if (event->type == GDK_BUTTON_RELEASE) {
 445                 event_context->xp = event_context->yp = 0;
 446                 if (event->button.button == 1) {
 447                     Geom::OptRect b = Inkscape::Rubberband::get(desktop)->getRectangle();
 448
 449                     if (nc->shape_editor->hits_curve() && !event_context->within_tolerance) { //drag curve
 450                         nc->shape_editor->finish_drag();
 451                     } else if (b && !event_context->within_tolerance) { // drag to select
 452                         nc->shape_editor->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
 453                     } else {
 454                         if (!(nc->rb_escaped)) { // unless something was cancelled
 455                             if (nc->shape_editor->has_selection())
 456                                 nc->shape_editor->deselect();
 457                             else
 458                                 sp_desktop_selection(desktop)->clear();
 459                         }
 460                     }
 461                     ret = TRUE;
 462                     Inkscape::Rubberband::get(desktop)->stop();
 463                     desktop->updateNow();
 464                     nc->rb_escaped = false;
 465                     nc->drag = FALSE;
 466                     nc->shape_editor->cancel_hit();
 467                     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 468                 }
 469             }
 470             break;
 471         case GDK_KEY_PRESS:
 472             switch (get_group0_keyval(&event->key)) {
 473                 case GDK_Insert:
 474                 case GDK_KP_Insert:
 475                     // with any modifiers
 476                     nc->shape_editor->add_node();
 477                     ret = TRUE;
 478                     break;
 479                 case GDK_Delete:
 480                 case GDK_KP_Delete:
 481                 case GDK_BackSpace:
 482                     if (MOD__CTRL_ONLY) {
 483                         nc->shape_editor->delete_nodes();
 484                     } else {
 485                         nc->shape_editor->delete_nodes_preserving_shape();
 486                     }
 487                     ret = TRUE;
 488                     break;
 489                 case GDK_C:
 490                 case GDK_c:
 491                     if (MOD__SHIFT_ONLY) {
 492                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_CUSP);
 493                         ret = TRUE;
 494                     }
 495                     break;
 496                 case GDK_S:
 497                 case GDK_s:
 498                     if (MOD__SHIFT_ONLY) {
 499                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
 500                         ret = TRUE;
 501                     }
 502                     break;
 503                 case GDK_A:
 504                 case GDK_a:
 505                     if (MOD__SHIFT_ONLY) {
 506                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_AUTO);
 507                         ret = TRUE;
 508                     }
 509                     break;
 510                 case GDK_Y:
 511                 case GDK_y:
 512                     if (MOD__SHIFT_ONLY) {
 513                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SYMM);
 514                         ret = TRUE;
 515                     }
 516                     break;
 517                 case GDK_B:
 518                 case GDK_b:
 519                     if (MOD__SHIFT_ONLY) {
 520                         nc->shape_editor->break_at_nodes();
 521                         ret = TRUE;
 522                     }
 523                     break;
 524                 case GDK_J:
 525                 case GDK_j:
 526                     if (MOD__SHIFT_ONLY) {
 527                         nc->shape_editor->join_nodes();
 528                         ret = TRUE;
 529                     }
 530                     break;
 531                 case GDK_D:
 532                 case GDK_d:
 533                     if (MOD__SHIFT_ONLY) {
 534                         nc->shape_editor->duplicate_nodes();
 535                         ret = TRUE;
 536                     }
 537                     break;
 538                 case GDK_L:
 539                 case GDK_l:
 540                     if (MOD__SHIFT_ONLY) {
 541                         nc->shape_editor->set_type_of_segments(NR_LINETO);
 542                         ret = TRUE;
 543                     }
 544                     break;
 545                 case GDK_U:
 546                 case GDK_u:
 547                     if (MOD__SHIFT_ONLY) {
 548                         nc->shape_editor->set_type_of_segments(NR_CURVETO);
 549                         ret = TRUE;
 550                     }
 551                     break;
 552                 case GDK_R:
 553                 case GDK_r:
 554                     if (MOD__SHIFT_ONLY) {
 555                         // FIXME: add top panel button
 556                         sp_selected_path_reverse(desktop);
 557                         ret = TRUE;
 558                     }
 559                     break;
 560                 case GDK_x:
 561                 case GDK_X:
 562                     if (MOD__ALT_ONLY) {
 563                         desktop->setToolboxFocusTo ("altx-nodes");
 564                         ret = TRUE;
 565                     }
 566                     break;
 567                 case GDK_Left: // move selection left
 568                 case GDK_KP_Left:
 569                 case GDK_KP_4:
 570                     if (!MOD__CTRL) { // not ctrl
 571                         gint mul = 1 + gobble_key_events(
 572                             get_group0_keyval(&event->key), 0); // with any mask
 573                         if (MOD__ALT) { // alt
 574                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, mul*-10, 0); // shift
 575                             else nc->shape_editor->move_nodes_screen(desktop, mul*-1, 0); // no shift
 576                         }
 577                         else { // no alt
 578                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*-10*nudge, 0); // shift
 579                             else nc->shape_editor->move_nodes(mul*-nudge, 0); // no shift
 580                         }
 581                         ret = TRUE;
 582                     }
 583                     break;
 584                 case GDK_Up: // move selection up
 585                 case GDK_KP_Up:
 586                 case GDK_KP_8:
 587                     if (!MOD__CTRL) { // not ctrl
 588                         gint mul = 1 + gobble_key_events(
 589                             get_group0_keyval(&event->key), 0); // with any mask
 590                         if (MOD__ALT) { // alt
 591                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, 0, mul*10); // shift
 592                             else nc->shape_editor->move_nodes_screen(desktop, 0, mul*1); // no shift
 593                         }
 594                         else { // no alt
 595                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*10*nudge); // shift
 596                             else nc->shape_editor->move_nodes(0, mul*nudge); // no shift
 597                         }
 598                         ret = TRUE;
 599                     }
 600                     break;
 601                 case GDK_Right: // move selection right
 602                 case GDK_KP_Right:
 603                 case GDK_KP_6:
 604                     if (!MOD__CTRL) { // not ctrl
 605                         gint mul = 1 + gobble_key_events(
 606                             get_group0_keyval(&event->key), 0); // with any mask
 607                         if (MOD__ALT) { // alt
 608                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, mul*10, 0); // shift
 609                             else nc->shape_editor->move_nodes_screen(desktop, mul*1, 0); // no shift
 610                         }
 611                         else { // no alt
 612                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*10*nudge, 0); // shift
 613                             else nc->shape_editor->move_nodes(mul*nudge, 0); // no shift
 614                         }
 615                         ret = TRUE;
 616                     }
 617                     break;
 618                 case GDK_Down: // move selection down
 619                 case GDK_KP_Down:
 620                 case GDK_KP_2:
 621                     if (!MOD__CTRL) { // not ctrl
 622                         gint mul = 1 + gobble_key_events(
 623                             get_group0_keyval(&event->key), 0); // with any mask
 624                         if (MOD__ALT) { // alt
 625                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, 0, mul*-10); // shift
 626                             else nc->shape_editor->move_nodes_screen(desktop, 0, mul*-1); // no shift
 627                         }
 628                         else { // no alt
 629                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*-10*nudge); // shift
 630                             else nc->shape_editor->move_nodes(0, mul*-nudge); // no shift
 631                         }
 632                         ret = TRUE;
 633                     }
 634                     break;
 635                 case GDK_Escape:
 636                 {
 637                     Geom::OptRect const b = Inkscape::Rubberband::get(desktop)->getRectangle();
 638                     if (b) {
 639                         Inkscape::Rubberband::get(desktop)->stop();
 640                         nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 641                         nc->rb_escaped = true;
 642                     } else {
 643                         if (nc->shape_editor->has_selection()) {
 644                             nc->shape_editor->deselect();
 645                         } else {
 646                             sp_desktop_selection(desktop)->clear();
 647                         }
 648                     }
 649                     ret = TRUE;
 650                     break;
 651                 }
 652
 653                 case GDK_bracketleft:
 654                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 655                         if (nc->leftctrl)
 656                             nc->shape_editor->rotate_nodes (M_PI/snaps, -1, false);
 657                         if (nc->rightctrl)
 658                             nc->shape_editor->rotate_nodes (M_PI/snaps, 1, false);
 659                     } else if ( MOD__ALT && !MOD__CTRL ) {
 660                         if (nc->leftalt && nc->rightalt)
 661                             nc->shape_editor->rotate_nodes (1, 0, true);
 662                         else {
 663                             if (nc->leftalt)
 664                                 nc->shape_editor->rotate_nodes (1, -1, true);
 665                             if (nc->rightalt)
 666                                 nc->shape_editor->rotate_nodes (1, 1, true);
 667                         }
 668                     } else if ( snaps != 0 ) {
 669                         nc->shape_editor->rotate_nodes (M_PI/snaps, 0, false);
 670                     }
 671                     ret = TRUE;
 672                     break;
 673                 case GDK_bracketright:
 674                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 675                         if (nc->leftctrl)
 676                             nc->shape_editor->rotate_nodes (-M_PI/snaps, -1, false);
 677                         if (nc->rightctrl)
 678                             nc->shape_editor->rotate_nodes (-M_PI/snaps, 1, false);
 679                     } else if ( MOD__ALT && !MOD__CTRL ) {
 680                         if (nc->leftalt && nc->rightalt)
 681                             nc->shape_editor->rotate_nodes (-1, 0, true);
 682                         else {
 683                             if (nc->leftalt)
 684                                 nc->shape_editor->rotate_nodes (-1, -1, true);
 685                             if (nc->rightalt)
 686                                 nc->shape_editor->rotate_nodes (-1, 1, true);
 687                         }
 688                     } else if ( snaps != 0 ) {
 689                         nc->shape_editor->rotate_nodes (-M_PI/snaps, 0, false);
 690                     }
 691                     ret = TRUE;
 692                     break;
 693                 case GDK_less:
 694                 case GDK_comma:
 695                     if (MOD__CTRL) {
 696                         if (nc->leftctrl)
 697                             nc->shape_editor->scale_nodes(-offset, -1);
 698                         if (nc->rightctrl)
 699                             nc->shape_editor->scale_nodes(-offset, 1);
 700                     } else if (MOD__ALT) {
 701                         if (nc->leftalt && nc->rightalt)
 702                             nc->shape_editor->scale_nodes_screen (-1, 0);
 703                         else {
 704                             if (nc->leftalt)
 705                                 nc->shape_editor->scale_nodes_screen (-1, -1);
 706                             if (nc->rightalt)
 707                                 nc->shape_editor->scale_nodes_screen (-1, 1);
 708                         }
 709                     } else {
 710                         nc->shape_editor->scale_nodes (-offset, 0);
 711                     }
 712                     ret = TRUE;
 713                     break;
 714                 case GDK_greater:
 715                 case GDK_period:
 716                     if (MOD__CTRL) {
 717                         if (nc->leftctrl)
 718                             nc->shape_editor->scale_nodes (offset, -1);
 719                         if (nc->rightctrl)
 720                             nc->shape_editor->scale_nodes (offset, 1);
 721                     } else if (MOD__ALT) {
 722                         if (nc->leftalt && nc->rightalt)
 723                             nc->shape_editor->scale_nodes_screen (1, 0);
 724                         else {
 725                             if (nc->leftalt)
 726                                 nc->shape_editor->scale_nodes_screen (1, -1);
 727                             if (nc->rightalt)
 728                                 nc->shape_editor->scale_nodes_screen (1, 1);
 729                         }
 730                     } else {
 731                         nc->shape_editor->scale_nodes (offset, 0);
 732                     }
 733                     ret = TRUE;
 734                     break;
 735
 736                 case GDK_Alt_L:
 737                     nc->leftalt = TRUE;
 738                     sp_node_context_show_modifier_tip(event_context, event);
 739                     break;
 740                 case GDK_Alt_R:
 741                     nc->rightalt = TRUE;
 742                     sp_node_context_show_modifier_tip(event_context, event);
 743                     break;
 744                 case GDK_Control_L:
 745                     nc->leftctrl = TRUE;
 746                     sp_node_context_show_modifier_tip(event_context, event);
 747                     break;
 748                 case GDK_Control_R:
 749                     nc->rightctrl = TRUE;
 750                     sp_node_context_show_modifier_tip(event_context, event);
 751                     break;
 752                 case GDK_Shift_L:
 753                 case GDK_Shift_R:
 754                 case GDK_Meta_L:
 755                 case GDK_Meta_R:
 756                     sp_node_context_show_modifier_tip(event_context, event);
 757                     break;
 758                 default:
 759                     ret = node_key(event);
 760                     break;
 761             }
 762             break;
 763         case GDK_KEY_RELEASE:
 764             switch (get_group0_keyval(&event->key)) {
 765                 case GDK_Alt_L:
 766                     nc->leftalt = FALSE;
 767                     event_context->defaultMessageContext()->clear();
 768                     break;
 769                 case GDK_Alt_R:
 770                     nc->rightalt = FALSE;
 771                     event_context->defaultMessageContext()->clear();
 772                     break;
 773                 case GDK_Control_L:
 774                     nc->leftctrl = FALSE;
 775                     event_context->defaultMessageContext()->clear();
 776                     break;
 777                 case GDK_Control_R:
 778                     nc->rightctrl = FALSE;
 779                     event_context->defaultMessageContext()->clear();
 780                     break;
 781                 case GDK_Shift_L:
 782                 case GDK_Shift_R:
 783                 case GDK_Meta_L:
 784                 case GDK_Meta_R:
 785                     event_context->defaultMessageContext()->clear();
 786                     break;
 787             }
 788             break;
 789         default:
 790             break;
 791     }
 792
 793     if (!ret) {
 794         if (((SPEventContextClass *) parent_class)->root_handler)
 795             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 796     }
 797
 798     return ret;
 799 }
 800
 801
 802 /*
 803   Local Variables:
 804   mode:c++
 805   c-file-style:"stroustrup"
 806   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 807   indent-tabs-mode:nil
 808   fill-column:99
 809   End:
 810 */
 811 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :