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 ec->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     ec->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         ec->shape_editor->set_item(item, SH_NODEPATH);
 160         ec->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     ec->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 = sp_nodepath_generate_helperpath(desktop, item);
 193
 194         if (canvasitem) {
 195             nc->flash_tempitem = desktop->add_temporary_canvasitem (canvasitem, timeout);
 196         }
 197     }
 198 }
 199
 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);
 208
 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 }
 217
 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 }
 227
 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
 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     }
 255
 256     if (((SPEventContextClass *) parent_class)->item_handler)
 257         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 258
 259     return ret;
 260 }
 261
 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();
 269
 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);
 275
 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     }
 283
 284     gint ret = FALSE;
 285     switch (event->type) {
 286         case GDK_BUTTON_PRESS:
 287             if (event->button.button == 1 && !event_context->space_panning) {
 288                 // save drag origin
 289                 event_context->xp = (gint) event->button.x;
 290                 event_context->yp = (gint) event->button.y;
 291                 event_context->within_tolerance = true;
 292                 se->cancel_hit();
 293
 294                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 295                     if (!nc->drag) {
 296                         if (se->has_nodepath() && selection->single() /* && item_over */) {
 297                                 sp_canvas_set_snap_delay_active(desktop->canvas, true);
 298                                 // save drag origin
 299                             bool over_stroke = se->is_over_stroke(Geom::Point(event->button.x, event->button.y), true);
 300                             //only dragging curves
 301                             if (over_stroke) {
 302                                 ret = TRUE;
 303                                 break;
 304                             }
 305                         }
 306                     }
 307                 }
 308                 Geom::Point const button_w(event->button.x,
 309                                          event->button.y);
 310                 Geom::Point const button_dt(desktop->w2d(button_w));
 311                 Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);
 312                 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 313                 desktop->updateNow();
 314                 ret = TRUE;
 315             }
 316             break;
 317         case GDK_MOTION_NOTIFY:
 318             if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
 319
 320                 if ( event_context->within_tolerance
 321                      && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 322                      && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 323                     break; // do not drag if we're within tolerance from origin
 324                 }
 325
 326                 // The path went away while dragging; throw away any further motion
 327                 // events until the mouse pointer is released.
 328
 329                 if (se->hits_curve() && !se->has_nodepath()) {
 330                   break;
 331                 }
 332
 333                 // Once the user has moved farther than tolerance from the original location
 334                 // (indicating they intend to move the object, not click), then always process the
 335                 // motion notify coordinates as given (no snapping back to origin)
 336                 event_context->within_tolerance = false;
 337
 338                 // Once we determine what the user is doing (dragging either a node or the
 339                 // selection rubberband), make sure we continue to perform that operation
 340                 // until the mouse pointer is lifted.
 341                 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
 342                     if (se->hits_curve() && se->has_nodepath()) {
 343                         nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
 344                     } else {
 345                         nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
 346                     }
 347                 }
 348
 349                 switch (nc->current_state) {
 350                     case SP_NODE_CONTEXT_NODE_DRAGGING:
 351                         {
 352                             se->curve_drag (event->motion.x, event->motion.y);
 353
 354                             gobble_motion_events(GDK_BUTTON1_MASK);
 355                             break;
 356                         }
 357                     case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
 358                         if (Inkscape::Rubberband::get(desktop)->is_started()) {
 359                             Geom::Point const motion_w(event->motion.x,
 360                                                 event->motion.y);
 361                             Geom::Point const motion_dt(desktop->w2d(motion_w));
 362                             Inkscape::Rubberband::get(desktop)->move(motion_dt);
 363                         }
 364                         break;
 365                 }
 366
 367                 nc->drag = TRUE;
 368                 ret = TRUE;
 369             } else {
 370                 if (!se->has_nodepath() || selection->singleItem() == NULL) {
 371                     break;
 372                 }
 373
 374                 bool over_stroke = false;
 375                 over_stroke = se->is_over_stroke(Geom::Point(event->motion.x, event->motion.y), false);
 376
 377                 if (nc->cursor_drag && !over_stroke) {
 378                     event_context->cursor_shape = cursor_node_xpm;
 379                     event_context->hot_x = 1;
 380                     event_context->hot_y = 1;
 381                     sp_event_context_update_cursor(event_context);
 382                     nc->cursor_drag = false;
 383                 } else if (!nc->cursor_drag && over_stroke) {
 384                     event_context->cursor_shape = cursor_node_d_xpm;
 385                     event_context->hot_x = 1;
 386                     event_context->hot_y = 1;
 387                     sp_event_context_update_cursor(event_context);
 388                     nc->cursor_drag = true;
 389                 }
 390             }
 391             break;
 392
 393         case GDK_2BUTTON_PRESS:
 394         case GDK_BUTTON_RELEASE:
 395             if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
 396                 // find out clicked item, disregarding groups, honoring Alt
 397                 SPItem *item_clicked = sp_event_context_find_item (desktop,
 398                         Geom::Point(event->button.x, event->button.y),
 399                         (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
 400
 401                 event_context->xp = event_context->yp = 0;
 402
 403                 bool over_stroke = false;
 404                 if (se->has_nodepath()) {
 405                     over_stroke = se->is_over_stroke(Geom::Point(event->button.x, event->button.y), false);
 406                 }
 407
 408                 if (item_clicked || over_stroke) {
 409                     if (over_stroke || nc->added_node) {
 410                         switch (event->type) {
 411                             case GDK_BUTTON_RELEASE:
 412                                 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
 413                                     //add a node
 414                                     se->add_node_near_point();
 415                                 } else {
 416                                     if (nc->added_node) { // we just received double click, ignore release
 417                                         nc->added_node = false;
 418                                         break;
 419                                     }
 420                                     //select the segment
 421                                     if (event->button.state & GDK_SHIFT_MASK) {
 422                                         se->select_segment_near_point(true);
 423                                     } else {
 424                                         se->select_segment_near_point(false);
 425                                     }
 426                                     desktop->updateNow();
 427                                 }
 428                                 sp_canvas_set_snap_delay_active(desktop->canvas, false);
 429                                 break;
 430                             case GDK_2BUTTON_PRESS:
 431                                 //add a node
 432                                 se->add_node_near_point();
 433                                 nc->added_node = true;
 434                                 sp_canvas_set_snap_delay_active(desktop->canvas, false);
 435                                 break;
 436                             default:
 437                                 break;
 438                         }
 439                     } else if (event->button.state & GDK_SHIFT_MASK) {
 440                         selection->toggle(item_clicked);
 441                         desktop->updateNow();
 442                     } else {
 443                         selection->set(item_clicked);
 444                         desktop->updateNow();
 445                     }
 446                     Inkscape::Rubberband::get(desktop)->stop();
 447                     ret = TRUE;
 448                     break;
 449                 }
 450             }
 451             if (event->type == GDK_BUTTON_RELEASE) {
 452                 event_context->xp = event_context->yp = 0;
 453                 if (event->button.button == 1) {
 454                         Geom::OptRect b = Inkscape::Rubberband::get(desktop)->getRectangle();
 455
 456                     if (se->hits_curve() && !event_context->within_tolerance) { //drag curve
 457                         se->finish_drag();
 458                     } else if (b && !event_context->within_tolerance) { // drag to select
 459                         se->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
 460                     } else {
 461                         if (!(nc->rb_escaped)) { // unless something was canceled
 462                             if (se->has_selection())
 463                                 se->deselect();
 464                             else
 465                                 sp_desktop_selection(desktop)->clear();
 466                         }
 467                     }
 468                     ret = TRUE;
 469                     Inkscape::Rubberband::get(desktop)->stop();
 470                     desktop->updateNow();
 471                     nc->rb_escaped = false;
 472                     nc->drag = FALSE;
 473                     se->cancel_hit();
 474                     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 475                 }
 476             }
 477             break;
 478         case GDK_KEY_PRESS:
 479             switch (get_group0_keyval(&event->key)) {
 480                 case GDK_Insert:
 481                 case GDK_KP_Insert:
 482                     // with any modifiers
 483                     se->add_node();
 484                     ret = TRUE;
 485                     break;
 486                 case GDK_I:
 487                 case GDK_i:
 488                     // apple keyboards have no Insert
 489                     if (MOD__SHIFT_ONLY) {
 490                         se->add_node();
 491                         ret = TRUE;
 492                     }
 493                     break;
 494                 case GDK_Delete:
 495                 case GDK_KP_Delete:
 496                 case GDK_BackSpace:
 497                     if (MOD__CTRL_ONLY) {
 498                         se->delete_nodes();
 499                     } else {
 500                         se->delete_nodes_preserving_shape();
 501                     }
 502                     ret = TRUE;
 503                     break;
 504                 case GDK_C:
 505                 case GDK_c:
 506                     if (MOD__SHIFT_ONLY) {
 507                         se->set_node_type(Inkscape::NodePath::NODE_CUSP);
 508                         ret = TRUE;
 509                     }
 510                     break;
 511                 case GDK_S:
 512                 case GDK_s:
 513                     if (MOD__SHIFT_ONLY) {
 514                         se->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
 515                         ret = TRUE;
 516                     }
 517                     break;
 518                 case GDK_A:
 519                 case GDK_a:
 520                     if (MOD__SHIFT_ONLY) {
 521                         se->set_node_type(Inkscape::NodePath::NODE_AUTO);
 522                         ret = TRUE;
 523                     }
 524                     break;
 525                 case GDK_Y:
 526                 case GDK_y:
 527                     if (MOD__SHIFT_ONLY) {
 528                         se->set_node_type(Inkscape::NodePath::NODE_SYMM);
 529                         ret = TRUE;
 530                     }
 531                     break;
 532                 case GDK_B:
 533                 case GDK_b:
 534                     if (MOD__SHIFT_ONLY) {
 535                         se->break_at_nodes();
 536                         ret = TRUE;
 537                     }
 538                     break;
 539                 case GDK_J:
 540                 case GDK_j:
 541                     if (MOD__SHIFT_ONLY) {
 542                         se->join_nodes();
 543                         ret = TRUE;
 544                     }
 545                     break;
 546                 case GDK_D:
 547                 case GDK_d:
 548                     if (MOD__SHIFT_ONLY) {
 549                         se->duplicate_nodes();
 550                         ret = TRUE;
 551                     }
 552                     break;
 553                 case GDK_L:
 554                 case GDK_l:
 555                     if (MOD__SHIFT_ONLY) {
 556                         se->set_type_of_segments(NR_LINETO);
 557                         ret = TRUE;
 558                     }
 559                     break;
 560                 case GDK_U:
 561                 case GDK_u:
 562                     if (MOD__SHIFT_ONLY) {
 563                         se->set_type_of_segments(NR_CURVETO);
 564                         ret = TRUE;
 565                     }
 566                     break;
 567                 case GDK_R:
 568                 case GDK_r:
 569                     if (MOD__SHIFT_ONLY) {
 570                         // FIXME: add top panel button
 571                         sp_selected_path_reverse(desktop);
 572                         ret = TRUE;
 573                     }
 574                     break;
 575                 case GDK_x:
 576                 case GDK_X:
 577                     if (MOD__ALT_ONLY) {
 578                         desktop->setToolboxFocusTo ("altx-nodes");
 579                         ret = TRUE;
 580                     }
 581                     break;
 582                 case GDK_Left: // move selection left
 583                 case GDK_KP_Left:
 584                 case GDK_KP_4:
 585                     if (!MOD__CTRL) { // not ctrl
 586                         gint mul = 1 + gobble_key_events(
 587                             get_group0_keyval(&event->key), 0); // with any mask
 588                         if (MOD__ALT) { // alt
 589                             if (MOD__SHIFT) se->move_nodes_screen(desktop, mul*-10, 0); // shift
 590                             else se->move_nodes_screen(desktop, mul*-1, 0); // no shift
 591                         }
 592                         else { // no alt
 593                             if (MOD__SHIFT) se->move_nodes(mul*-10*nudge, 0); // shift
 594                             else se->move_nodes(mul*-nudge, 0); // no shift
 595                         }
 596                         ret = TRUE;
 597                     }
 598                     break;
 599                 case GDK_Up: // move selection up
 600                 case GDK_KP_Up:
 601                 case GDK_KP_8:
 602                     if (!MOD__CTRL) { // not ctrl
 603                         gint mul = 1 + gobble_key_events(
 604                             get_group0_keyval(&event->key), 0); // with any mask
 605                         if (MOD__ALT) { // alt
 606                             if (MOD__SHIFT) se->move_nodes_screen(desktop, 0, mul*10); // shift
 607                             else se->move_nodes_screen(desktop, 0, mul*1); // no shift
 608                         }
 609                         else { // no alt
 610                             if (MOD__SHIFT) se->move_nodes(0, mul*10*nudge); // shift
 611                             else se->move_nodes(0, mul*nudge); // no shift
 612                         }
 613                         ret = TRUE;
 614                     }
 615                     break;
 616                 case GDK_Right: // move selection right
 617                 case GDK_KP_Right:
 618                 case GDK_KP_6:
 619                     if (!MOD__CTRL) { // not ctrl
 620                         gint mul = 1 + gobble_key_events(
 621                             get_group0_keyval(&event->key), 0); // with any mask
 622                         if (MOD__ALT) { // alt
 623                             if (MOD__SHIFT) se->move_nodes_screen(desktop, mul*10, 0); // shift
 624                             else se->move_nodes_screen(desktop, mul*1, 0); // no shift
 625                         }
 626                         else { // no alt
 627                             if (MOD__SHIFT) se->move_nodes(mul*10*nudge, 0); // shift
 628                             else se->move_nodes(mul*nudge, 0); // no shift
 629                         }
 630                         ret = TRUE;
 631                     }
 632                     break;
 633                 case GDK_Down: // move selection down
 634                 case GDK_KP_Down:
 635                 case GDK_KP_2:
 636                     if (!MOD__CTRL) { // not ctrl
 637                         gint mul = 1 + gobble_key_events(
 638                             get_group0_keyval(&event->key), 0); // with any mask
 639                         if (MOD__ALT) { // alt
 640                             if (MOD__SHIFT) se->move_nodes_screen(desktop, 0, mul*-10); // shift
 641                             else se->move_nodes_screen(desktop, 0, mul*-1); // no shift
 642                         }
 643                         else { // no alt
 644                             if (MOD__SHIFT) se->move_nodes(0, mul*-10*nudge); // shift
 645                             else se->move_nodes(0, mul*-nudge); // no shift
 646                         }
 647                         ret = TRUE;
 648                     }
 649                     break;
 650                 case GDK_Escape:
 651                 {
 652                     Geom::OptRect const b = Inkscape::Rubberband::get(desktop)->getRectangle();
 653                     if (b) {
 654                         Inkscape::Rubberband::get(desktop)->stop();
 655                         nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 656                         nc->rb_escaped = true;
 657                     } else {
 658                         if (se->has_selection()) {
 659                             se->deselect();
 660                         } else {
 661                             sp_desktop_selection(desktop)->clear();
 662                         }
 663                     }
 664                     ret = TRUE;
 665                     break;
 666                 }
 667
 668                 case GDK_bracketleft:
 669                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 670                         if (nc->leftctrl)
 671                             se->rotate_nodes (M_PI/snaps, -1, false);
 672                         if (nc->rightctrl)
 673                             se->rotate_nodes (M_PI/snaps, 1, false);
 674                     } else if ( MOD__ALT && !MOD__CTRL ) {
 675                         if (nc->leftalt && nc->rightalt)
 676                             se->rotate_nodes (1, 0, true);
 677                         else {
 678                             if (nc->leftalt)
 679                                 se->rotate_nodes (1, -1, true);
 680                             if (nc->rightalt)
 681                                 se->rotate_nodes (1, 1, true);
 682                         }
 683                     } else if ( snaps != 0 ) {
 684                         se->rotate_nodes (M_PI/snaps, 0, false);
 685                     }
 686                     ret = TRUE;
 687                     break;
 688                 case GDK_bracketright:
 689                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 690                         if (nc->leftctrl)
 691                             se->rotate_nodes (-M_PI/snaps, -1, false);
 692                         if (nc->rightctrl)
 693                             se->rotate_nodes (-M_PI/snaps, 1, false);
 694                     } else if ( MOD__ALT && !MOD__CTRL ) {
 695                         if (nc->leftalt && nc->rightalt)
 696                             se->rotate_nodes (-1, 0, true);
 697                         else {
 698                             if (nc->leftalt)
 699                                 se->rotate_nodes (-1, -1, true);
 700                             if (nc->rightalt)
 701                                 se->rotate_nodes (-1, 1, true);
 702                         }
 703                     } else if ( snaps != 0 ) {
 704                         se->rotate_nodes (-M_PI/snaps, 0, false);
 705                     }
 706                     ret = TRUE;
 707                     break;
 708                 case GDK_less:
 709                 case GDK_comma:
 710                     if (MOD__CTRL) {
 711                         if (nc->leftctrl)
 712                             se->scale_nodes(-offset, -1);
 713                         if (nc->rightctrl)
 714                             se->scale_nodes(-offset, 1);
 715                     } else if (MOD__ALT) {
 716                         if (nc->leftalt && nc->rightalt)
 717                             se->scale_nodes_screen (-1, 0);
 718                         else {
 719                             if (nc->leftalt)
 720                                 se->scale_nodes_screen (-1, -1);
 721                             if (nc->rightalt)
 722                                 se->scale_nodes_screen (-1, 1);
 723                         }
 724                     } else {
 725                         se->scale_nodes (-offset, 0);
 726                     }
 727                     ret = TRUE;
 728                     break;
 729                 case GDK_greater:
 730                 case GDK_period:
 731                     if (MOD__CTRL) {
 732                         if (nc->leftctrl)
 733                             se->scale_nodes (offset, -1);
 734                         if (nc->rightctrl)
 735                             se->scale_nodes (offset, 1);
 736                     } else if (MOD__ALT) {
 737                         if (nc->leftalt && nc->rightalt)
 738                             se->scale_nodes_screen (1, 0);
 739                         else {
 740                             if (nc->leftalt)
 741                                 se->scale_nodes_screen (1, -1);
 742                             if (nc->rightalt)
 743                                 se->scale_nodes_screen (1, 1);
 744                         }
 745                     } else {
 746                         se->scale_nodes (offset, 0);
 747                     }
 748                     ret = TRUE;
 749                     break;
 750
 751                 case GDK_Alt_L:
 752                     nc->leftalt = TRUE;
 753                     sp_node_context_show_modifier_tip(event_context, event);
 754                     break;
 755                 case GDK_Alt_R:
 756                     nc->rightalt = TRUE;
 757                     sp_node_context_show_modifier_tip(event_context, event);
 758                     break;
 759                 case GDK_Control_L:
 760                     nc->leftctrl = TRUE;
 761                     sp_node_context_show_modifier_tip(event_context, event);
 762                     break;
 763                 case GDK_Control_R:
 764                     nc->rightctrl = TRUE;
 765                     sp_node_context_show_modifier_tip(event_context, event);
 766                     break;
 767                 case GDK_Shift_L:
 768                 case GDK_Shift_R:
 769                 case GDK_Meta_L:
 770                 case GDK_Meta_R:
 771                     sp_node_context_show_modifier_tip(event_context, event);
 772                     break;
 773                 default:
 774                     ret = node_key(event);
 775                     break;
 776             }
 777             break;
 778         case GDK_KEY_RELEASE:
 779             switch (get_group0_keyval(&event->key)) {
 780                 case GDK_Alt_L:
 781                     nc->leftalt = FALSE;
 782                     event_context->defaultMessageContext()->clear();
 783                     break;
 784                 case GDK_Alt_R:
 785                     nc->rightalt = FALSE;
 786                     event_context->defaultMessageContext()->clear();
 787                     break;
 788                 case GDK_Control_L:
 789                     nc->leftctrl = FALSE;
 790                     event_context->defaultMessageContext()->clear();
 791                     break;
 792                 case GDK_Control_R:
 793                     nc->rightctrl = FALSE;
 794                     event_context->defaultMessageContext()->clear();
 795                     break;
 796                 case GDK_Shift_L:
 797                 case GDK_Shift_R:
 798                 case GDK_Meta_L:
 799                 case GDK_Meta_R:
 800                     event_context->defaultMessageContext()->clear();
 801                     break;
 802             }
 803             break;
 804         default:
 805             break;
 806     }
 807
 808     if (!ret) {
 809         if (((SPEventContextClass *) parent_class)->root_handler)
 810             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 811     }
 812
 813     return ret;
 814 }
 815
 816
 817 /*
 818   Local Variables:
 819   mode:c++
 820   c-file-style:"stroustrup"
 821   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 822   indent-tabs-mode:nil
 823   fill-column:99
 824   End:
 825 */
 826 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :