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 "prefs-utils.h"
  34 #include "xml/node-event-vector.h"
  35 #include "style.h"
  36 #include "splivarot.h"
  37 #include "shape-editor.h"
  38 #include "live_effects/effect.h"
  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     if (prefs_get_int_attribute("tools.nodes", "selcue", 0) != 0) {
 164         ec->enableSelectionCue();
 165     }
 166
 167     if (prefs_get_int_attribute("tools.nodes", "gradientdrag", 0) != 0) {
 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     g_print ("-----> sp_node_context_flash_path(): TODO: generate the helper path!!\n");
 181     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 182
 183     nc->remove_flash_counter = 3; // for some reason root_handler is called twice after each item_handler...
 184     if (nc->flashed_item != item) {
 185         // we entered a new item
 186         nc->flashed_item = item;
 187         SPDesktop *desktop = event_context->desktop;
 188         if (nc->flash_tempitem) {
 189             desktop->remove_temporary_canvasitem(nc->flash_tempitem);
 190             nc->flash_tempitem = NULL;
 191         }
 192
 193         if (SP_IS_PATH(item)) {
 194             SPCanvasItem *canvasitem = sp_nodepath_helperpath_from_path(desktop, SP_PATH(item));
 195             nc->flash_tempitem = desktop->add_temporary_canvasitem (canvasitem, timeout);
 196         }
 197     }
 198 }
 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     SPNodeContext *nc = SP_NODE_CONTEXT(data);
 208
 209     // TODO: update ShapeEditorsCollective instead
 210     nc->shape_editor->unset_item(SH_NODEPATH);
 211     nc->shape_editor->unset_item(SH_KNOTHOLDER);
 212     SPItem *item = selection->singleItem();
 213     nc->shape_editor->set_item(item, SH_NODEPATH);
 214     nc->shape_editor->set_item(item, SH_KNOTHOLDER);
 215     nc->shape_editor->update_statusbar();
 216 }
 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
 233     if (prefs_get_int_attribute ("tools.nodes", "pathflash_enabled", 0) == 1) {
 234         guint timeout = prefs_get_int_attribute("tools.nodes", "pathflash_timeout", 500);
 235         if (SP_IS_LPE_ITEM(item)) {
 236             Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item));
 237             if (lpe && (lpe->providesOwnFlashPaths() ||
 238                         lpe->pathFlashType() == Inkscape::LivePathEffect::SUPPRESS_FLASH)) {
 239                 // path should be suppressed or permanent; this is handled in
 240                 // sp_node_context_selection_changed()
 241                 return ret;
 242             }
 243         }
 244         sp_node_context_flash_path(event_context, item, timeout);
 245     }
 246
 247     if (((SPEventContextClass *) parent_class)->item_handler)
 248         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 249
 250     return ret;
 251 }
 252
 253 static gint
 254 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 255 {
 256     SPDesktop *desktop = event_context->desktop;
 257     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 258
 259     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 260     double const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px
 261     event_context->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100); // read every time, to make prefs changes really live
 262     int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
 263     double const offset = prefs_get_double_attribute_limited("options.defaultscale", "value", 2, 0, 1000);
 264
 265     if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
 266         desktop->remove_temporary_canvasitem(nc->flash_tempitem);
 267         nc->flash_tempitem = NULL;
 268         nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
 269     } else {
 270         nc->remove_flash_counter--;
 271     }
 272
 273     gint ret = FALSE;
 274     switch (event->type) {
 275         case GDK_BUTTON_PRESS:
 276             if (event->button.button == 1 && !event_context->space_panning) {
 277                 // save drag origin
 278                 event_context->xp = (gint) event->button.x;
 279                 event_context->yp = (gint) event->button.y;
 280                 event_context->within_tolerance = true;
 281                 nc->shape_editor->cancel_hit();
 282
 283                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 284                     if (!nc->drag) {
 285                         if (nc->shape_editor->has_nodepath() && selection->single() /* && item_over */) {
 286                             // save drag origin
 287                             bool over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), true);
 288                             //only dragging curves
 289                             if (over_stroke) {
 290                                 ret = TRUE;
 291                                 break;
 292                             }
 293                         }
 294                     }
 295                 }
 296                 NR::Point const button_w(event->button.x,
 297                                          event->button.y);
 298                 NR::Point const button_dt(desktop->w2d(button_w));
 299                 Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);
 300                 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 301                 desktop->updateNow();
 302                 ret = TRUE;
 303             }
 304             break;
 305         case GDK_MOTION_NOTIFY:
 306             if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
 307
 308                 if ( event_context->within_tolerance
 309                      && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 310                      && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 311                     break; // do not drag if we're within tolerance from origin
 312                 }
 313
 314                 // The path went away while dragging; throw away any further motion
 315                 // events until the mouse pointer is released.
 316
 317                 if (nc->shape_editor->hits_curve() && !nc->shape_editor->has_nodepath()) {
 318                   break;
 319                 }
 320
 321                 // Once the user has moved farther than tolerance from the original location
 322                 // (indicating they intend to move the object, not click), then always process the
 323                 // motion notify coordinates as given (no snapping back to origin)
 324                 event_context->within_tolerance = false;
 325
 326                 // Once we determine what the user is doing (dragging either a node or the
 327                 // selection rubberband), make sure we continue to perform that operation
 328                 // until the mouse pointer is lifted.
 329                 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
 330                     if (nc->shape_editor->hits_curve() && nc->shape_editor->has_nodepath()) {
 331                         nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
 332                     } else {
 333                         nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
 334                     }
 335                 }
 336
 337                 switch (nc->current_state) {
 338                     case SP_NODE_CONTEXT_NODE_DRAGGING:
 339                         {
 340                             nc->shape_editor->curve_drag (event->motion.x, event->motion.y);
 341
 342                             gobble_motion_events(GDK_BUTTON1_MASK);
 343                             break;
 344                         }
 345                     case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
 346                         if (Inkscape::Rubberband::get(desktop)->is_started()) {
 347                             NR::Point const motion_w(event->motion.x,
 348                                                 event->motion.y);
 349                             NR::Point const motion_dt(desktop->w2d(motion_w));
 350                             Inkscape::Rubberband::get(desktop)->move(motion_dt);
 351                         }
 352                         break;
 353                 }
 354
 355                 nc->drag = TRUE;
 356                 ret = TRUE;
 357             } else {
 358                 if (!nc->shape_editor->has_nodepath() || selection->singleItem() == NULL) {
 359                     break;
 360                 }
 361
 362                 bool over_stroke = false;
 363                 over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->motion.x, event->motion.y), false);
 364
 365                 if (nc->cursor_drag && !over_stroke) {
 366                     event_context->cursor_shape = cursor_node_xpm;
 367                     event_context->hot_x = 1;
 368                     event_context->hot_y = 1;
 369                     sp_event_context_update_cursor(event_context);
 370                     nc->cursor_drag = false;
 371                 } else if (!nc->cursor_drag && over_stroke) {
 372                     event_context->cursor_shape = cursor_node_d_xpm;
 373                     event_context->hot_x = 1;
 374                     event_context->hot_y = 1;
 375                     sp_event_context_update_cursor(event_context);
 376                     nc->cursor_drag = true;
 377                 }
 378             }
 379             break;
 380
 381         case GDK_2BUTTON_PRESS:
 382         case GDK_BUTTON_RELEASE:
 383             if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
 384                 // find out clicked item, disregarding groups, honoring Alt
 385                 SPItem *item_clicked = sp_event_context_find_item (desktop,
 386                         NR::Point(event->button.x, event->button.y),
 387                         (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
 388
 389                 event_context->xp = event_context->yp = 0;
 390
 391                 bool over_stroke = false;
 392                 if (nc->shape_editor->has_nodepath()) {
 393                     over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), false);
 394                 }
 395
 396                 if (item_clicked || over_stroke) {
 397                     if (over_stroke || nc->added_node) {
 398                         switch (event->type) {
 399                             case GDK_BUTTON_RELEASE:
 400                                 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
 401                                     //add a node
 402                                     nc->shape_editor->add_node_near_point();
 403                                 } else {
 404                                     if (nc->added_node) { // we just received double click, ignore release
 405                                         nc->added_node = false;
 406                                         break;
 407                                     }
 408                                     //select the segment
 409                                     if (event->button.state & GDK_SHIFT_MASK) {
 410                                         nc->shape_editor->select_segment_near_point(true);
 411                                     } else {
 412                                         nc->shape_editor->select_segment_near_point(false);
 413                                     }
 414                                     desktop->updateNow();
 415                                 }
 416                                 break;
 417                             case GDK_2BUTTON_PRESS:
 418                                 //add a node
 419                                 nc->shape_editor->add_node_near_point();
 420                                 nc->added_node = true;
 421                                 break;
 422                             default:
 423                                 break;
 424                         }
 425                     } else if (event->button.state & GDK_SHIFT_MASK) {
 426                         selection->toggle(item_clicked);
 427                         desktop->updateNow();
 428                     } else {
 429                         selection->set(item_clicked);
 430                         desktop->updateNow();
 431                     }
 432                     Inkscape::Rubberband::get(desktop)->stop();
 433                     ret = TRUE;
 434                     break;
 435                 }
 436             }
 437             if (event->type == GDK_BUTTON_RELEASE) {
 438                 event_context->xp = event_context->yp = 0;
 439                 if (event->button.button == 1) {
 440                     boost::optional<NR::Rect> b = Inkscape::Rubberband::get(desktop)->getRectangle();
 441
 442                     if (nc->shape_editor->hits_curve() && !event_context->within_tolerance) { //drag curve
 443                         nc->shape_editor->finish_drag();
 444                     } else if (b && !event_context->within_tolerance) { // drag to select
 445                         nc->shape_editor->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
 446                     } else {
 447                         if (!(nc->rb_escaped)) { // unless something was cancelled
 448                             if (nc->shape_editor->has_selection())
 449                                 nc->shape_editor->deselect();
 450                             else
 451                                 sp_desktop_selection(desktop)->clear();
 452                         }
 453                     }
 454                     ret = TRUE;
 455                     Inkscape::Rubberband::get(desktop)->stop();
 456                     desktop->updateNow();
 457                     nc->rb_escaped = false;
 458                     nc->drag = FALSE;
 459                     nc->shape_editor->cancel_hit();
 460                     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 461                 }
 462             }
 463             break;
 464         case GDK_KEY_PRESS:
 465             switch (get_group0_keyval(&event->key)) {
 466                 case GDK_Insert:
 467                 case GDK_KP_Insert:
 468                     // with any modifiers
 469                     nc->shape_editor->add_node();
 470                     ret = TRUE;
 471                     break;
 472                 case GDK_Delete:
 473                 case GDK_KP_Delete:
 474                 case GDK_BackSpace:
 475                     if (MOD__CTRL_ONLY) {
 476                         nc->shape_editor->delete_nodes();
 477                     } else {
 478                         nc->shape_editor->delete_nodes_preserving_shape();
 479                     }
 480                     ret = TRUE;
 481                     break;
 482                 case GDK_C:
 483                 case GDK_c:
 484                     if (MOD__SHIFT_ONLY) {
 485                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_CUSP);
 486                         ret = TRUE;
 487                     }
 488                     break;
 489                 case GDK_S:
 490                 case GDK_s:
 491                     if (MOD__SHIFT_ONLY) {
 492                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
 493                         ret = TRUE;
 494                     }
 495                     break;
 496                 case GDK_Y:
 497                 case GDK_y:
 498                     if (MOD__SHIFT_ONLY) {
 499                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SYMM);
 500                         ret = TRUE;
 501                     }
 502                     break;
 503                 case GDK_B:
 504                 case GDK_b:
 505                     if (MOD__SHIFT_ONLY) {
 506                         nc->shape_editor->break_at_nodes();
 507                         ret = TRUE;
 508                     }
 509                     break;
 510                 case GDK_J:
 511                 case GDK_j:
 512                     if (MOD__SHIFT_ONLY) {
 513                         nc->shape_editor->join_nodes();
 514                         ret = TRUE;
 515                     }
 516                     break;
 517                 case GDK_D:
 518                 case GDK_d:
 519                     if (MOD__SHIFT_ONLY) {
 520                         nc->shape_editor->duplicate_nodes();
 521                         ret = TRUE;
 522                     }
 523                     break;
 524                 case GDK_L:
 525                 case GDK_l:
 526                     if (MOD__SHIFT_ONLY) {
 527                         nc->shape_editor->set_type_of_segments(NR_LINETO);
 528                         ret = TRUE;
 529                     }
 530                     break;
 531                 case GDK_U:
 532                 case GDK_u:
 533                     if (MOD__SHIFT_ONLY) {
 534                         nc->shape_editor->set_type_of_segments(NR_CURVETO);
 535                         ret = TRUE;
 536                     }
 537                     break;
 538                 case GDK_R:
 539                 case GDK_r:
 540                     if (MOD__SHIFT_ONLY) {
 541                         // FIXME: add top panel button
 542                         sp_selected_path_reverse(desktop);
 543                         ret = TRUE;
 544                     }
 545                     break;
 546                 case GDK_x:
 547                 case GDK_X:
 548                     if (MOD__ALT_ONLY) {
 549                         desktop->setToolboxFocusTo ("altx-nodes");
 550                         ret = TRUE;
 551                     }
 552                     break;
 553                 case GDK_Left: // move selection left
 554                 case GDK_KP_Left:
 555                 case GDK_KP_4:
 556                     if (!MOD__CTRL) { // not ctrl
 557                         gint mul = 1 + gobble_key_events(
 558                             get_group0_keyval(&event->key), 0); // with any mask
 559                         if (MOD__ALT) { // alt
 560                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, mul*-10, 0); // shift
 561                             else nc->shape_editor->move_nodes_screen(desktop, mul*-1, 0); // no shift
 562                         }
 563                         else { // no alt
 564                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*-10*nudge, 0); // shift
 565                             else nc->shape_editor->move_nodes(mul*-nudge, 0); // no shift
 566                         }
 567                         ret = TRUE;
 568                     }
 569                     break;
 570                 case GDK_Up: // move selection up
 571                 case GDK_KP_Up:
 572                 case GDK_KP_8:
 573                     if (!MOD__CTRL) { // not ctrl
 574                         gint mul = 1 + gobble_key_events(
 575                             get_group0_keyval(&event->key), 0); // with any mask
 576                         if (MOD__ALT) { // alt
 577                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, 0, mul*10); // shift
 578                             else nc->shape_editor->move_nodes_screen(desktop, 0, mul*1); // no shift
 579                         }
 580                         else { // no alt
 581                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*10*nudge); // shift
 582                             else nc->shape_editor->move_nodes(0, mul*nudge); // no shift
 583                         }
 584                         ret = TRUE;
 585                     }
 586                     break;
 587                 case GDK_Right: // move selection right
 588                 case GDK_KP_Right:
 589                 case GDK_KP_6:
 590                     if (!MOD__CTRL) { // not ctrl
 591                         gint mul = 1 + gobble_key_events(
 592                             get_group0_keyval(&event->key), 0); // with any mask
 593                         if (MOD__ALT) { // alt
 594                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, mul*10, 0); // shift
 595                             else nc->shape_editor->move_nodes_screen(desktop, mul*1, 0); // no shift
 596                         }
 597                         else { // no alt
 598                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*10*nudge, 0); // shift
 599                             else nc->shape_editor->move_nodes(mul*nudge, 0); // no shift
 600                         }
 601                         ret = TRUE;
 602                     }
 603                     break;
 604                 case GDK_Down: // move selection down
 605                 case GDK_KP_Down:
 606                 case GDK_KP_2:
 607                     if (!MOD__CTRL) { // not ctrl
 608                         gint mul = 1 + gobble_key_events(
 609                             get_group0_keyval(&event->key), 0); // with any mask
 610                         if (MOD__ALT) { // alt
 611                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(desktop, 0, mul*-10); // shift
 612                             else nc->shape_editor->move_nodes_screen(desktop, 0, mul*-1); // no shift
 613                         }
 614                         else { // no alt
 615                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*-10*nudge); // shift
 616                             else nc->shape_editor->move_nodes(0, mul*-nudge); // no shift
 617                         }
 618                         ret = TRUE;
 619                     }
 620                     break;
 621                 case GDK_Escape:
 622                 {
 623                     boost::optional<NR::Rect> const b = Inkscape::Rubberband::get(desktop)->getRectangle();
 624                     if (b) {
 625                         Inkscape::Rubberband::get(desktop)->stop();
 626                         nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 627                         nc->rb_escaped = true;
 628                     } else {
 629                         if (nc->shape_editor->has_selection()) {
 630                             nc->shape_editor->deselect();
 631                         } else {
 632                             sp_desktop_selection(desktop)->clear();
 633                         }
 634                     }
 635                     ret = TRUE;
 636                     break;
 637                 }
 638
 639                 case GDK_bracketleft:
 640                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 641                         if (nc->leftctrl)
 642                             nc->shape_editor->rotate_nodes (M_PI/snaps, -1, false);
 643                         if (nc->rightctrl)
 644                             nc->shape_editor->rotate_nodes (M_PI/snaps, 1, false);
 645                     } else if ( MOD__ALT && !MOD__CTRL ) {
 646                         if (nc->leftalt && nc->rightalt)
 647                             nc->shape_editor->rotate_nodes (1, 0, true);
 648                         else {
 649                             if (nc->leftalt)
 650                                 nc->shape_editor->rotate_nodes (1, -1, true);
 651                             if (nc->rightalt)
 652                                 nc->shape_editor->rotate_nodes (1, 1, true);
 653                         }
 654                     } else if ( snaps != 0 ) {
 655                         nc->shape_editor->rotate_nodes (M_PI/snaps, 0, false);
 656                     }
 657                     ret = TRUE;
 658                     break;
 659                 case GDK_bracketright:
 660                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 661                         if (nc->leftctrl)
 662                             nc->shape_editor->rotate_nodes (-M_PI/snaps, -1, false);
 663                         if (nc->rightctrl)
 664                             nc->shape_editor->rotate_nodes (-M_PI/snaps, 1, false);
 665                     } else if ( MOD__ALT && !MOD__CTRL ) {
 666                         if (nc->leftalt && nc->rightalt)
 667                             nc->shape_editor->rotate_nodes (-1, 0, true);
 668                         else {
 669                             if (nc->leftalt)
 670                                 nc->shape_editor->rotate_nodes (-1, -1, true);
 671                             if (nc->rightalt)
 672                                 nc->shape_editor->rotate_nodes (-1, 1, true);
 673                         }
 674                     } else if ( snaps != 0 ) {
 675                         nc->shape_editor->rotate_nodes (-M_PI/snaps, 0, false);
 676                     }
 677                     ret = TRUE;
 678                     break;
 679                 case GDK_less:
 680                 case GDK_comma:
 681                     if (MOD__CTRL) {
 682                         if (nc->leftctrl)
 683                             nc->shape_editor->scale_nodes(-offset, -1);
 684                         if (nc->rightctrl)
 685                             nc->shape_editor->scale_nodes(-offset, 1);
 686                     } else if (MOD__ALT) {
 687                         if (nc->leftalt && nc->rightalt)
 688                             nc->shape_editor->scale_nodes_screen (-1, 0);
 689                         else {
 690                             if (nc->leftalt)
 691                                 nc->shape_editor->scale_nodes_screen (-1, -1);
 692                             if (nc->rightalt)
 693                                 nc->shape_editor->scale_nodes_screen (-1, 1);
 694                         }
 695                     } else {
 696                         nc->shape_editor->scale_nodes (-offset, 0);
 697                     }
 698                     ret = TRUE;
 699                     break;
 700                 case GDK_greater:
 701                 case GDK_period:
 702                     if (MOD__CTRL) {
 703                         if (nc->leftctrl)
 704                             nc->shape_editor->scale_nodes (offset, -1);
 705                         if (nc->rightctrl)
 706                             nc->shape_editor->scale_nodes (offset, 1);
 707                     } else if (MOD__ALT) {
 708                         if (nc->leftalt && nc->rightalt)
 709                             nc->shape_editor->scale_nodes_screen (1, 0);
 710                         else {
 711                             if (nc->leftalt)
 712                                 nc->shape_editor->scale_nodes_screen (1, -1);
 713                             if (nc->rightalt)
 714                                 nc->shape_editor->scale_nodes_screen (1, 1);
 715                         }
 716                     } else {
 717                         nc->shape_editor->scale_nodes (offset, 0);
 718                     }
 719                     ret = TRUE;
 720                     break;
 721
 722                 case GDK_Alt_L:
 723                     nc->leftalt = TRUE;
 724                     sp_node_context_show_modifier_tip(event_context, event);
 725                     break;
 726                 case GDK_Alt_R:
 727                     nc->rightalt = TRUE;
 728                     sp_node_context_show_modifier_tip(event_context, event);
 729                     break;
 730                 case GDK_Control_L:
 731                     nc->leftctrl = TRUE;
 732                     sp_node_context_show_modifier_tip(event_context, event);
 733                     break;
 734                 case GDK_Control_R:
 735                     nc->rightctrl = TRUE;
 736                     sp_node_context_show_modifier_tip(event_context, event);
 737                     break;
 738                 case GDK_Shift_L:
 739                 case GDK_Shift_R:
 740                 case GDK_Meta_L:
 741                 case GDK_Meta_R:
 742                     sp_node_context_show_modifier_tip(event_context, event);
 743                     break;
 744                 default:
 745                     ret = node_key(event);
 746                     break;
 747             }
 748             break;
 749         case GDK_KEY_RELEASE:
 750             switch (get_group0_keyval(&event->key)) {
 751                 case GDK_Alt_L:
 752                     nc->leftalt = FALSE;
 753                     event_context->defaultMessageContext()->clear();
 754                     break;
 755                 case GDK_Alt_R:
 756                     nc->rightalt = FALSE;
 757                     event_context->defaultMessageContext()->clear();
 758                     break;
 759                 case GDK_Control_L:
 760                     nc->leftctrl = FALSE;
 761                     event_context->defaultMessageContext()->clear();
 762                     break;
 763                 case GDK_Control_R:
 764                     nc->rightctrl = FALSE;
 765                     event_context->defaultMessageContext()->clear();
 766                     break;
 767                 case GDK_Shift_L:
 768                 case GDK_Shift_R:
 769                 case GDK_Meta_L:
 770                 case GDK_Meta_R:
 771                     event_context->defaultMessageContext()->clear();
 772                     break;
 773             }
 774             break;
 775         default:
 776             break;
 777     }
 778
 779     if (!ret) {
 780         if (((SPEventContextClass *) parent_class)->root_handler)
 781             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 782     }
 783
 784     return ret;
 785 }
 786
 787
 788 /*
 789   Local Variables:
 790   mode:c++
 791   c-file-style:"stroustrup"
 792   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 793   indent-tabs-mode:nil
 794   fill-column:99
 795   End:
 796 */
 797 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :