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
  39 // needed for flash nodepath upon mouseover:
  40 #include "display/canvas-bpath.h"
  41 #include "display/curve.h"
  42
  43 static void sp_node_context_class_init(SPNodeContextClass *klass);
  44 static void sp_node_context_init(SPNodeContext *node_context);
  45 static void sp_node_context_dispose(GObject *object);
  46
  47 static void sp_node_context_setup(SPEventContext *ec);
  48 static gint sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  49 static gint sp_node_context_item_handler(SPEventContext *event_context,
  50                                          SPItem *item, GdkEvent *event);
  51
  52 static SPEventContextClass *parent_class;
  53
  54 GType
  55 sp_node_context_get_type()
  56 {
  57     static GType type = 0;
  58     if (!type) {
  59         GTypeInfo info = {
  60             sizeof(SPNodeContextClass),
  61             NULL, NULL,
  62             (GClassInitFunc) sp_node_context_class_init,
  63             NULL, NULL,
  64             sizeof(SPNodeContext),
  65             4,
  66             (GInstanceInitFunc) sp_node_context_init,
  67             NULL,    /* value_table */
  68         };
  69         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPNodeContext", &info, (GTypeFlags)0);
  70     }
  71     return type;
  72 }
  73
  74 static void
  75 sp_node_context_class_init(SPNodeContextClass *klass)
  76 {
  77     GObjectClass *object_class = (GObjectClass *) klass;
  78     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
  79
  80     parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
  81
  82     object_class->dispose = sp_node_context_dispose;
  83
  84     event_context_class->setup = sp_node_context_setup;
  85     event_context_class->root_handler = sp_node_context_root_handler;
  86     event_context_class->item_handler = sp_node_context_item_handler;
  87 }
  88
  89 static void
  90 sp_node_context_init(SPNodeContext *node_context)
  91 {
  92     SPEventContext *event_context = SP_EVENT_CONTEXT(node_context);
  93
  94     event_context->cursor_shape = cursor_node_xpm;
  95     event_context->hot_x = 1;
  96     event_context->hot_y = 1;
  97
  98     node_context->leftalt = FALSE;
  99     node_context->rightalt = FALSE;
 100     node_context->leftctrl = FALSE;
 101     node_context->rightctrl = FALSE;
 102
 103     new (&node_context->sel_changed_connection) sigc::connection();
 104
 105     node_context->flash_tempitem = NULL;
 106     node_context->flashed_item = NULL;
 107     node_context->remove_flash_counter = 0;
 108 }
 109
 110 static void
 111 sp_node_context_dispose(GObject *object)
 112 {
 113     SPNodeContext *nc = SP_NODE_CONTEXT(object);
 114     SPEventContext *ec = SP_EVENT_CONTEXT(object);
 115
 116     ec->enableGrDrag(false);
 117
 118     nc->sel_changed_connection.disconnect();
 119     nc->sel_changed_connection.~connection();
 120
 121     delete nc->shape_editor;
 122
 123     if (nc->_node_message_context) {
 124         delete nc->_node_message_context;
 125     }
 126
 127     G_OBJECT_CLASS(parent_class)->dispose(object);
 128 }
 129
 130 static void
 131 sp_node_context_setup(SPEventContext *ec)
 132 {
 133     SPNodeContext *nc = SP_NODE_CONTEXT(ec);
 134
 135     if (((SPEventContextClass *) parent_class)->setup)
 136         ((SPEventContextClass *) parent_class)->setup(ec);
 137
 138     nc->sel_changed_connection.disconnect();
 139     nc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(sigc::bind(sigc::ptr_fun(&sp_node_context_selection_changed), (gpointer)nc));
 140
 141     Inkscape::Selection *selection = sp_desktop_selection(ec->desktop);
 142     SPItem *item = selection->singleItem();
 143
 144     nc->shape_editor = new ShapeEditor(ec->desktop);
 145
 146     nc->rb_escaped = false;
 147
 148     nc->cursor_drag = false;
 149
 150     nc->added_node = false;
 151
 152     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 153
 154     if (item) {
 155         nc->shape_editor->set_item(item);
 156     }
 157
 158     if (prefs_get_int_attribute("tools.nodes", "selcue", 0) != 0) {
 159         ec->enableSelectionCue();
 160     }
 161
 162     if (prefs_get_int_attribute("tools.nodes", "gradientdrag", 0) != 0) {
 163         ec->enableGrDrag();
 164     }
 165
 166     ec->desktop->emitToolSubselectionChanged(NULL); // sets the coord entry fields to inactive
 167
 168     nc->_node_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 169
 170     nc->shape_editor->update_statusbar();
 171 }
 172
 173 /**
 174 \brief  Callback that processes the "changed" signal on the selection;
 175 destroys old and creates new nodepath and reassigns listeners to the new selected item's repr
 176 */
 177 void
 178 sp_node_context_selection_changed(Inkscape::Selection *selection, gpointer data)
 179 {
 180     SPNodeContext *nc = SP_NODE_CONTEXT(data);
 181
 182     // TODO: update ShapeEditorsCollective instead
 183     nc->shape_editor->unset_item();
 184     SPItem *item = selection->singleItem();
 185     nc->shape_editor->set_item(item);
 186
 187     nc->shape_editor->update_statusbar();
 188 }
 189
 190 void
 191 sp_node_context_show_modifier_tip(SPEventContext *event_context, GdkEvent *event)
 192 {
 193     sp_event_show_modifier_tip
 194         (event_context->defaultMessageContext(), event,
 195          _("<b>Ctrl</b>: toggle node type, snap handle angle, move hor/vert; <b>Ctrl+Alt</b>: move along handles"),
 196          _("<b>Shift</b>: toggle node selection, disable snapping, rotate both handles"),
 197          _("<b>Alt</b>: lock handle length; <b>Ctrl+Alt</b>: move along handles"));
 198 }
 199
 200
 201 static gint
 202 sp_node_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 203 {
 204     gint ret = FALSE;
 205     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 206
 207     if (  prefs_get_int_attribute ("tools.nodes", "pathflash_enabled", 0) == 1  ) {
 208         nc->remove_flash_counter = 3; // for some reason root_handler is called twice after each item_handler...
 209         if (nc->flashed_item != item) {
 210             // we entered a new item
 211             nc->flashed_item = item;
 212             SPDesktop *desktop = event_context->desktop;
 213             if (nc->flash_tempitem) {
 214                 desktop->remove_temporary_canvasitem(nc->flash_tempitem);
 215                 nc->flash_tempitem = NULL;
 216             }
 217
 218             if (SP_IS_PATH(item)) {
 219             // This should be put somewhere else under the name of "generate helperpath" or something. Because basically this is copied of code from nodepath...
 220                 SPCurve *curve_new = sp_path_get_curve_for_edit(SP_PATH(item));
 221                 SPCurve *flash_curve = curve_new->copy();
 222                 flash_curve->transform(sp_item_i2d_affine(item) );
 223                 SPCanvasItem * canvasitem = sp_canvas_bpath_new(sp_desktop_tempgroup(desktop), flash_curve);
 224             // would be nice if its color could be XORed or something, now it is invisible for red stroked objects...
 225             // unless we also flash the nodes...
 226                 guint32 color = prefs_get_int_attribute("tools.nodes", "highlight_color", 0xff0000ff);
 227                 sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(canvasitem), color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
 228                 sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(canvasitem), 0, SP_WIND_RULE_NONZERO);
 229                 sp_canvas_item_show(canvasitem);
 230                 flash_curve->unref();
 231                 guint timeout = prefs_get_int_attribute("tools.nodes", "pathflash_timeout", 500);
 232                 nc->flash_tempitem = desktop->add_temporary_canvasitem (canvasitem, timeout);
 233             }
 234         }
 235     }
 236
 237     if (((SPEventContextClass *) parent_class)->item_handler)
 238         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 239
 240     return ret;
 241 }
 242
 243 static gint
 244 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 245 {
 246     SPDesktop *desktop = event_context->desktop;
 247     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 248
 249     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 250     double const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px
 251     event_context->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100); // read every time, to make prefs changes really live
 252     int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
 253     double const offset = prefs_get_double_attribute_limited("options.defaultscale", "value", 2, 0, 1000);
 254
 255     if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
 256         desktop->remove_temporary_canvasitem(nc->flash_tempitem);
 257         nc->flash_tempitem = NULL;
 258         nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
 259     } else {
 260         nc->remove_flash_counter--;
 261     }
 262
 263     gint ret = FALSE;
 264     switch (event->type) {
 265         case GDK_BUTTON_PRESS:
 266             if (event->button.button == 1 && !event_context->space_panning) {
 267                 // save drag origin
 268                 event_context->xp = (gint) event->button.x;
 269                 event_context->yp = (gint) event->button.y;
 270                 event_context->within_tolerance = true;
 271                 nc->shape_editor->cancel_hit();
 272
 273                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 274                     if (!nc->drag) {
 275                         if (nc->shape_editor->has_nodepath() && selection->single() /* && item_over */) {
 276                             // save drag origin
 277                             bool over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), true);
 278                             //only dragging curves
 279                             if (over_stroke) {
 280                                 ret = TRUE;
 281                                 break;
 282                             }
 283                         }
 284                     }
 285                 }
 286                 NR::Point const button_w(event->button.x,
 287                                          event->button.y);
 288                 NR::Point const button_dt(desktop->w2d(button_w));
 289                 Inkscape::Rubberband::get()->start(desktop, button_dt);
 290                 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 291                 desktop->updateNow();
 292                 ret = TRUE;
 293             }
 294             break;
 295         case GDK_MOTION_NOTIFY:
 296             if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
 297
 298                 if ( event_context->within_tolerance
 299                      && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 300                      && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 301                     break; // do not drag if we're within tolerance from origin
 302                 }
 303
 304                 // The path went away while dragging; throw away any further motion
 305                 // events until the mouse pointer is released.
 306
 307                 if (nc->shape_editor->hits_curve() && !nc->shape_editor->has_nodepath()) {
 308                   break;
 309                 }
 310
 311                 // Once the user has moved farther than tolerance from the original location
 312                 // (indicating they intend to move the object, not click), then always process the
 313                 // motion notify coordinates as given (no snapping back to origin)
 314                 event_context->within_tolerance = false;
 315
 316                 // Once we determine what the user is doing (dragging either a node or the
 317                 // selection rubberband), make sure we continue to perform that operation
 318                 // until the mouse pointer is lifted.
 319                 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
 320                     if (nc->shape_editor->hits_curve() && nc->shape_editor->has_nodepath()) {
 321                         nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
 322                     } else {
 323                         nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
 324                     }
 325                 }
 326
 327                 switch (nc->current_state) {
 328                     case SP_NODE_CONTEXT_NODE_DRAGGING:
 329                         {
 330                             nc->shape_editor->curve_drag (event->motion.x, event->motion.y);
 331
 332                             gobble_motion_events(GDK_BUTTON1_MASK);
 333                             break;
 334                         }
 335                     case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
 336                         if (Inkscape::Rubberband::get()->is_started()) {
 337                             NR::Point const motion_w(event->motion.x,
 338                                                 event->motion.y);
 339                             NR::Point const motion_dt(desktop->w2d(motion_w));
 340                             Inkscape::Rubberband::get()->move(motion_dt);
 341                         }
 342                         break;
 343                 }
 344
 345                 nc->drag = TRUE;
 346                 ret = TRUE;
 347             } else {
 348                 if (!nc->shape_editor->has_nodepath() || selection->singleItem() == NULL) {
 349                     break;
 350                 }
 351
 352                 bool over_stroke = false;
 353                 over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->motion.x, event->motion.y), false);
 354
 355                 if (nc->cursor_drag && !over_stroke) {
 356                     event_context->cursor_shape = cursor_node_xpm;
 357                     event_context->hot_x = 1;
 358                     event_context->hot_y = 1;
 359                     sp_event_context_update_cursor(event_context);
 360                     nc->cursor_drag = false;
 361                 } else if (!nc->cursor_drag && over_stroke) {
 362                     event_context->cursor_shape = cursor_node_d_xpm;
 363                     event_context->hot_x = 1;
 364                     event_context->hot_y = 1;
 365                     sp_event_context_update_cursor(event_context);
 366                     nc->cursor_drag = true;
 367                 }
 368             }
 369             break;
 370
 371         case GDK_2BUTTON_PRESS:
 372         case GDK_BUTTON_RELEASE:
 373             if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
 374                 // find out clicked item, disregarding groups, honoring Alt
 375                 SPItem *item_clicked = sp_event_context_find_item (desktop,
 376                         NR::Point(event->button.x, event->button.y),
 377                         (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
 378
 379                 event_context->xp = event_context->yp = 0;
 380
 381                 bool over_stroke = false;
 382                 if (nc->shape_editor->has_nodepath()) {
 383                     over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), false);
 384                 }
 385
 386                 if (item_clicked || over_stroke) {
 387                     if (over_stroke || nc->added_node) {
 388                         switch (event->type) {
 389                             case GDK_BUTTON_RELEASE:
 390                                 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
 391                                     //add a node
 392                                     nc->shape_editor->add_node_near_point();
 393                                 } else {
 394                                     if (nc->added_node) { // we just received double click, ignore release
 395                                         nc->added_node = false;
 396                                         break;
 397                                     }
 398                                     //select the segment
 399                                     if (event->button.state & GDK_SHIFT_MASK) {
 400                                         nc->shape_editor->select_segment_near_point(true);
 401                                     } else {
 402                                         nc->shape_editor->select_segment_near_point(false);
 403                                     }
 404                                     desktop->updateNow();
 405                                 }
 406                                 break;
 407                             case GDK_2BUTTON_PRESS:
 408                                 //add a node
 409                                 nc->shape_editor->add_node_near_point();
 410                                 nc->added_node = true;
 411                                 break;
 412                             default:
 413                                 break;
 414                         }
 415                     } else if (event->button.state & GDK_SHIFT_MASK) {
 416                         selection->toggle(item_clicked);
 417                         desktop->updateNow();
 418                     } else {
 419                         selection->set(item_clicked);
 420                         desktop->updateNow();
 421                     }
 422                     Inkscape::Rubberband::get()->stop();
 423                     ret = TRUE;
 424                     break;
 425                 }
 426             }
 427             if (event->type == GDK_BUTTON_RELEASE) {
 428                 event_context->xp = event_context->yp = 0;
 429                 if (event->button.button == 1) {
 430                     NR::Maybe<NR::Rect> b = Inkscape::Rubberband::get()->getRectangle();
 431
 432                     if (nc->shape_editor->hits_curve() && !event_context->within_tolerance) { //drag curve
 433                         nc->shape_editor->finish_drag();
 434                     } else if (b && !event_context->within_tolerance) { // drag to select
 435                         nc->shape_editor->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
 436                     } else {
 437                         if (!(nc->rb_escaped)) { // unless something was cancelled
 438                             if (nc->shape_editor->has_selection())
 439                                 nc->shape_editor->deselect();
 440                             else
 441                                 sp_desktop_selection(desktop)->clear();
 442                         }
 443                     }
 444                     ret = TRUE;
 445                     Inkscape::Rubberband::get()->stop();
 446                     desktop->updateNow();
 447                     nc->rb_escaped = false;
 448                     nc->drag = FALSE;
 449                     nc->shape_editor->cancel_hit();
 450                     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 451                 }
 452             }
 453             break;
 454         case GDK_KEY_PRESS:
 455             switch (get_group0_keyval(&event->key)) {
 456                 case GDK_Insert:
 457                 case GDK_KP_Insert:
 458                     // with any modifiers
 459                     nc->shape_editor->add_node();
 460                     ret = TRUE;
 461                     break;
 462                 case GDK_Delete:
 463                 case GDK_KP_Delete:
 464                 case GDK_BackSpace:
 465                     if (MOD__CTRL_ONLY) {
 466                         nc->shape_editor->delete_nodes();
 467                     } else {
 468                         nc->shape_editor->delete_nodes_preserving_shape();
 469                     }
 470                     ret = TRUE;
 471                     break;
 472                 case GDK_C:
 473                 case GDK_c:
 474                     if (MOD__SHIFT_ONLY) {
 475                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_CUSP);
 476                         ret = TRUE;
 477                     }
 478                     break;
 479                 case GDK_S:
 480                 case GDK_s:
 481                     if (MOD__SHIFT_ONLY) {
 482                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
 483                         ret = TRUE;
 484                     }
 485                     break;
 486                 case GDK_Y:
 487                 case GDK_y:
 488                     if (MOD__SHIFT_ONLY) {
 489                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SYMM);
 490                         ret = TRUE;
 491                     }
 492                     break;
 493                 case GDK_B:
 494                 case GDK_b:
 495                     if (MOD__SHIFT_ONLY) {
 496                         nc->shape_editor->break_at_nodes();
 497                         ret = TRUE;
 498                     }
 499                     break;
 500                 case GDK_J:
 501                 case GDK_j:
 502                     if (MOD__SHIFT_ONLY) {
 503                         nc->shape_editor->join_nodes();
 504                         ret = TRUE;
 505                     }
 506                     break;
 507                 case GDK_D:
 508                 case GDK_d:
 509                     if (MOD__SHIFT_ONLY) {
 510                         nc->shape_editor->duplicate_nodes();
 511                         ret = TRUE;
 512                     }
 513                     break;
 514                 case GDK_L:
 515                 case GDK_l:
 516                     if (MOD__SHIFT_ONLY) {
 517                         nc->shape_editor->set_type_of_segments(NR_LINETO);
 518                         ret = TRUE;
 519                     }
 520                     break;
 521                 case GDK_U:
 522                 case GDK_u:
 523                     if (MOD__SHIFT_ONLY) {
 524                         nc->shape_editor->set_type_of_segments(NR_CURVETO);
 525                         ret = TRUE;
 526                     }
 527                     break;
 528                 case GDK_R:
 529                 case GDK_r:
 530                     if (MOD__SHIFT_ONLY) {
 531                         // FIXME: add top panel button
 532                         sp_selected_path_reverse();
 533                         ret = TRUE;
 534                     }
 535                     break;
 536                 case GDK_x:
 537                 case GDK_X:
 538                     if (MOD__ALT_ONLY) {
 539                         desktop->setToolboxFocusTo ("altx-nodes");
 540                         ret = TRUE;
 541                     }
 542                     break;
 543                 case GDK_Left: // move selection left
 544                 case GDK_KP_Left:
 545                 case GDK_KP_4:
 546                     if (!MOD__CTRL) { // not ctrl
 547                         gint mul = 1 + gobble_key_events(
 548                             get_group0_keyval(&event->key), 0); // with any mask
 549                         if (MOD__ALT) { // alt
 550                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(mul*-10, 0); // shift
 551                             else nc->shape_editor->move_nodes_screen(mul*-1, 0); // no shift
 552                         }
 553                         else { // no alt
 554                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*-10*nudge, 0); // shift
 555                             else nc->shape_editor->move_nodes(mul*-nudge, 0); // no shift
 556                         }
 557                         ret = TRUE;
 558                     }
 559                     break;
 560                 case GDK_Up: // move selection up
 561                 case GDK_KP_Up:
 562                 case GDK_KP_8:
 563                     if (!MOD__CTRL) { // not ctrl
 564                         gint mul = 1 + gobble_key_events(
 565                             get_group0_keyval(&event->key), 0); // with any mask
 566                         if (MOD__ALT) { // alt
 567                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(0, mul*10); // shift
 568                             else nc->shape_editor->move_nodes_screen(0, mul*1); // no shift
 569                         }
 570                         else { // no alt
 571                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*10*nudge); // shift
 572                             else nc->shape_editor->move_nodes(0, mul*nudge); // no shift
 573                         }
 574                         ret = TRUE;
 575                     }
 576                     break;
 577                 case GDK_Right: // move selection right
 578                 case GDK_KP_Right:
 579                 case GDK_KP_6:
 580                     if (!MOD__CTRL) { // not ctrl
 581                         gint mul = 1 + gobble_key_events(
 582                             get_group0_keyval(&event->key), 0); // with any mask
 583                         if (MOD__ALT) { // alt
 584                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(mul*10, 0); // shift
 585                             else nc->shape_editor->move_nodes_screen(mul*1, 0); // no shift
 586                         }
 587                         else { // no alt
 588                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*10*nudge, 0); // shift
 589                             else nc->shape_editor->move_nodes(mul*nudge, 0); // no shift
 590                         }
 591                         ret = TRUE;
 592                     }
 593                     break;
 594                 case GDK_Down: // move selection down
 595                 case GDK_KP_Down:
 596                 case GDK_KP_2:
 597                     if (!MOD__CTRL) { // not ctrl
 598                         gint mul = 1 + gobble_key_events(
 599                             get_group0_keyval(&event->key), 0); // with any mask
 600                         if (MOD__ALT) { // alt
 601                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(0, mul*-10); // shift
 602                             else nc->shape_editor->move_nodes_screen(0, mul*-1); // no shift
 603                         }
 604                         else { // no alt
 605                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*-10*nudge); // shift
 606                             else nc->shape_editor->move_nodes(0, mul*-nudge); // no shift
 607                         }
 608                         ret = TRUE;
 609                     }
 610                     break;
 611                 case GDK_Escape:
 612                 {
 613                     NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();
 614                     if (b) {
 615                         Inkscape::Rubberband::get()->stop();
 616                         nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 617                         nc->rb_escaped = true;
 618                     } else {
 619                         if (nc->shape_editor->has_selection()) {
 620                             nc->shape_editor->deselect();
 621                         } else {
 622                             sp_desktop_selection(desktop)->clear();
 623                         }
 624                     }
 625                     ret = TRUE;
 626                     break;
 627                 }
 628
 629                 case GDK_bracketleft:
 630                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 631                         if (nc->leftctrl)
 632                             nc->shape_editor->rotate_nodes (M_PI/snaps, -1, false);
 633                         if (nc->rightctrl)
 634                             nc->shape_editor->rotate_nodes (M_PI/snaps, 1, false);
 635                     } else if ( MOD__ALT && !MOD__CTRL ) {
 636                         if (nc->leftalt && nc->rightalt)
 637                             nc->shape_editor->rotate_nodes (1, 0, true);
 638                         else {
 639                             if (nc->leftalt)
 640                                 nc->shape_editor->rotate_nodes (1, -1, true);
 641                             if (nc->rightalt)
 642                                 nc->shape_editor->rotate_nodes (1, 1, true);
 643                         }
 644                     } else if ( snaps != 0 ) {
 645                         nc->shape_editor->rotate_nodes (M_PI/snaps, 0, false);
 646                     }
 647                     ret = TRUE;
 648                     break;
 649                 case GDK_bracketright:
 650                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 651                         if (nc->leftctrl)
 652                             nc->shape_editor->rotate_nodes (-M_PI/snaps, -1, false);
 653                         if (nc->rightctrl)
 654                             nc->shape_editor->rotate_nodes (-M_PI/snaps, 1, false);
 655                     } else if ( MOD__ALT && !MOD__CTRL ) {
 656                         if (nc->leftalt && nc->rightalt)
 657                             nc->shape_editor->rotate_nodes (-1, 0, true);
 658                         else {
 659                             if (nc->leftalt)
 660                                 nc->shape_editor->rotate_nodes (-1, -1, true);
 661                             if (nc->rightalt)
 662                                 nc->shape_editor->rotate_nodes (-1, 1, true);
 663                         }
 664                     } else if ( snaps != 0 ) {
 665                         nc->shape_editor->rotate_nodes (-M_PI/snaps, 0, false);
 666                     }
 667                     ret = TRUE;
 668                     break;
 669                 case GDK_less:
 670                 case GDK_comma:
 671                     if (MOD__CTRL) {
 672                         if (nc->leftctrl)
 673                             nc->shape_editor->scale_nodes(-offset, -1);
 674                         if (nc->rightctrl)
 675                             nc->shape_editor->scale_nodes(-offset, 1);
 676                     } else if (MOD__ALT) {
 677                         if (nc->leftalt && nc->rightalt)
 678                             nc->shape_editor->scale_nodes_screen (-1, 0);
 679                         else {
 680                             if (nc->leftalt)
 681                                 nc->shape_editor->scale_nodes_screen (-1, -1);
 682                             if (nc->rightalt)
 683                                 nc->shape_editor->scale_nodes_screen (-1, 1);
 684                         }
 685                     } else {
 686                         nc->shape_editor->scale_nodes (-offset, 0);
 687                     }
 688                     ret = TRUE;
 689                     break;
 690                 case GDK_greater:
 691                 case GDK_period:
 692                     if (MOD__CTRL) {
 693                         if (nc->leftctrl)
 694                             nc->shape_editor->scale_nodes (offset, -1);
 695                         if (nc->rightctrl)
 696                             nc->shape_editor->scale_nodes (offset, 1);
 697                     } else if (MOD__ALT) {
 698                         if (nc->leftalt && nc->rightalt)
 699                             nc->shape_editor->scale_nodes_screen (1, 0);
 700                         else {
 701                             if (nc->leftalt)
 702                                 nc->shape_editor->scale_nodes_screen (1, -1);
 703                             if (nc->rightalt)
 704                                 nc->shape_editor->scale_nodes_screen (1, 1);
 705                         }
 706                     } else {
 707                         nc->shape_editor->scale_nodes (offset, 0);
 708                     }
 709                     ret = TRUE;
 710                     break;
 711
 712                 case GDK_Alt_L:
 713                     nc->leftalt = TRUE;
 714                     sp_node_context_show_modifier_tip(event_context, event);
 715                     break;
 716                 case GDK_Alt_R:
 717                     nc->rightalt = TRUE;
 718                     sp_node_context_show_modifier_tip(event_context, event);
 719                     break;
 720                 case GDK_Control_L:
 721                     nc->leftctrl = TRUE;
 722                     sp_node_context_show_modifier_tip(event_context, event);
 723                     break;
 724                 case GDK_Control_R:
 725                     nc->rightctrl = TRUE;
 726                     sp_node_context_show_modifier_tip(event_context, event);
 727                     break;
 728                 case GDK_Shift_L:
 729                 case GDK_Shift_R:
 730                 case GDK_Meta_L:
 731                 case GDK_Meta_R:
 732                     sp_node_context_show_modifier_tip(event_context, event);
 733                     break;
 734                 default:
 735                     ret = node_key(event);
 736                     break;
 737             }
 738             break;
 739         case GDK_KEY_RELEASE:
 740             switch (get_group0_keyval(&event->key)) {
 741                 case GDK_Alt_L:
 742                     nc->leftalt = FALSE;
 743                     event_context->defaultMessageContext()->clear();
 744                     break;
 745                 case GDK_Alt_R:
 746                     nc->rightalt = FALSE;
 747                     event_context->defaultMessageContext()->clear();
 748                     break;
 749                 case GDK_Control_L:
 750                     nc->leftctrl = FALSE;
 751                     event_context->defaultMessageContext()->clear();
 752                     break;
 753                 case GDK_Control_R:
 754                     nc->rightctrl = FALSE;
 755                     event_context->defaultMessageContext()->clear();
 756                     break;
 757                 case GDK_Shift_L:
 758                 case GDK_Shift_R:
 759                 case GDK_Meta_L:
 760                 case GDK_Meta_R:
 761                     event_context->defaultMessageContext()->clear();
 762                     break;
 763             }
 764             break;
 765         default:
 766             break;
 767     }
 768
 769     if (!ret) {
 770         if (((SPEventContextClass *) parent_class)->root_handler)
 771             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 772     }
 773
 774     return ret;
 775 }
 776
 777
 778 /*
 779   Local Variables:
 780   mode:c++
 781   c-file-style:"stroustrup"
 782   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 783   indent-tabs-mode:nil
 784   fill-column:99
 785   End:
 786 */
 787 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :