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 // needed for flash nodepath upon mouseover:
  41 #include "display/canvas-bpath.h"
  42 #include "display/curve.h"
  43
  44 static void sp_node_context_class_init(SPNodeContextClass *klass);
  45 static void sp_node_context_init(SPNodeContext *node_context);
  46 static void sp_node_context_dispose(GObject *object);
  47
  48 static void sp_node_context_setup(SPEventContext *ec);
  49 static gint sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  50 static gint sp_node_context_item_handler(SPEventContext *event_context,
  51                                          SPItem *item, GdkEvent *event);
  52
  53 static SPEventContextClass *parent_class;
  54
  55 GType
  56 sp_node_context_get_type()
  57 {
  58     static GType type = 0;
  59     if (!type) {
  60         GTypeInfo info = {
  61             sizeof(SPNodeContextClass),
  62             NULL, NULL,
  63             (GClassInitFunc) sp_node_context_class_init,
  64             NULL, NULL,
  65             sizeof(SPNodeContext),
  66             4,
  67             (GInstanceInitFunc) sp_node_context_init,
  68             NULL,    /* value_table */
  69         };
  70         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPNodeContext", &info, (GTypeFlags)0);
  71     }
  72     return type;
  73 }
  74
  75 static void
  76 sp_node_context_class_init(SPNodeContextClass *klass)
  77 {
  78     GObjectClass *object_class = (GObjectClass *) klass;
  79     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
  80
  81     parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
  82
  83     object_class->dispose = sp_node_context_dispose;
  84
  85     event_context_class->setup = sp_node_context_setup;
  86     event_context_class->root_handler = sp_node_context_root_handler;
  87     event_context_class->item_handler = sp_node_context_item_handler;
  88 }
  89
  90 static void
  91 sp_node_context_init(SPNodeContext *node_context)
  92 {
  93     SPEventContext *event_context = SP_EVENT_CONTEXT(node_context);
  94
  95     event_context->cursor_shape = cursor_node_xpm;
  96     event_context->hot_x = 1;
  97     event_context->hot_y = 1;
  98
  99     node_context->leftalt = FALSE;
 100     node_context->rightalt = FALSE;
 101     node_context->leftctrl = FALSE;
 102     node_context->rightctrl = FALSE;
 103
 104     new (&node_context->sel_changed_connection) sigc::connection();
 105
 106     node_context->flash_tempitem = NULL;
 107     node_context->flashed_item = NULL;
 108     node_context->remove_flash_counter = 0;
 109 }
 110
 111 static void
 112 sp_node_context_dispose(GObject *object)
 113 {
 114     SPNodeContext *nc = SP_NODE_CONTEXT(object);
 115     SPEventContext *ec = SP_EVENT_CONTEXT(object);
 116
 117     ec->enableGrDrag(false);
 118
 119     nc->sel_changed_connection.disconnect();
 120     nc->sel_changed_connection.~connection();
 121
 122     delete nc->shape_editor;
 123
 124     if (nc->_node_message_context) {
 125         delete nc->_node_message_context;
 126     }
 127
 128     G_OBJECT_CLASS(parent_class)->dispose(object);
 129 }
 130
 131 static void
 132 sp_node_context_setup(SPEventContext *ec)
 133 {
 134     SPNodeContext *nc = SP_NODE_CONTEXT(ec);
 135
 136     if (((SPEventContextClass *) parent_class)->setup)
 137         ((SPEventContextClass *) parent_class)->setup(ec);
 138
 139     Inkscape::Selection *selection = sp_desktop_selection (ec->desktop);
 140     nc->sel_changed_connection.disconnect();
 141     nc->sel_modified_connection.disconnect();
 142     nc->sel_changed_connection =
 143         selection->connectChanged(sigc::bind(sigc::ptr_fun(&sp_node_context_selection_changed), (gpointer)nc));
 144     nc->sel_modified_connection =
 145         selection->connectModified(sigc::bind(sigc::ptr_fun(&sp_node_context_selection_modified), (gpointer)nc));
 146
 147     SPItem *item = selection->singleItem();
 148
 149     nc->shape_editor = new ShapeEditor(ec->desktop);
 150
 151     nc->rb_escaped = false;
 152
 153     nc->cursor_drag = false;
 154
 155     nc->added_node = false;
 156
 157     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 158
 159     if (item) {
 160         nc->shape_editor->set_item(item);
 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     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         if (SP_IS_PATH(item)) {
 193             SPCanvasItem *canvasitem = sp_nodepath_generate_helperpath(desktop, SP_PATH(item));
 194             nc->flash_tempitem = desktop->add_temporary_canvasitem (canvasitem, timeout);
 195         }
 196     }
 197 }
 198
 199 /**
 200 \brief  Callback that processes the "changed" signal on the selection;
 201 destroys old and creates new nodepath and reassigns listeners to the new selected item's repr
 202 */
 203 void
 204 sp_node_context_selection_changed(Inkscape::Selection *selection, gpointer data)
 205 {
 206     SPNodeContext *nc = SP_NODE_CONTEXT(data);
 207
 208     // TODO: update ShapeEditorsCollective instead
 209     nc->shape_editor->unset_item();
 210     SPItem *item = selection->singleItem();
 211     nc->shape_editor->set_item(item);
 212     nc->shape_editor->update_statusbar();
 213 }
 214
 215 /**
 216 \brief  Callback that processes the "modified" signal on the selection;
 217 updates temporary canvasitems associated to LPEItems in the selection
 218 */
 219 void
 220 sp_node_context_selection_modified(Inkscape::Selection *selection, guint /*flags*/, gpointer /*data*/)
 221 {
 222     // TODO: do this for *all* items in the selection
 223     SPItem *item = selection->singleItem();
 224
 225     // TODO: This is *very* inefficient! Can we avoid destroying and recreating the temporary
 226     // items? Also, we should only update those that actually need it!
 227     if (item && SP_IS_LPE_ITEM(item)) {
 228         SPLPEItem *lpeitem = SP_LPE_ITEM(item);
 229         SPDesktop *desktop = selection->desktop();
 230
 231         sp_lpe_item_remove_temporary_canvasitems(lpeitem, desktop);
 232         sp_lpe_item_add_temporary_canvasitems(lpeitem, desktop);
 233     }
 234 }
 235
 236 void
 237 sp_node_context_show_modifier_tip(SPEventContext *event_context, GdkEvent *event)
 238 {
 239     sp_event_show_modifier_tip
 240         (event_context->defaultMessageContext(), event,
 241          _("<b>Ctrl</b>: toggle node type, snap handle angle, move hor/vert; <b>Ctrl+Alt</b>: move along handles"),
 242          _("<b>Shift</b>: toggle node selection, disable snapping, rotate both handles"),
 243          _("<b>Alt</b>: lock handle length; <b>Ctrl+Alt</b>: move along handles"));
 244 }
 245
 246 static gint
 247 sp_node_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 248 {
 249     gint ret = FALSE;
 250
 251     if (prefs_get_int_attribute ("tools.nodes", "pathflash_enabled", 0) == 1) {
 252         guint timeout = prefs_get_int_attribute("tools.nodes", "pathflash_timeout", 500);
 253         if (SP_IS_LPE_ITEM(item)) {
 254             Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item));
 255             if (lpe) {
 256                 if (lpe->pathFlashType() == Inkscape::LivePathEffect::SUPPRESS_FLASH) {
 257                     // suppressed and permanent flashes for LPE items are handled in
 258                     // sp_node_context_selection_changed()
 259                     return ret;
 260                 }
 261                 if (lpe->pathFlashType() == Inkscape::LivePathEffect::PERMANENT_FLASH) {
 262                     timeout = 0;
 263                 }
 264             }
 265         }
 266         sp_node_context_flash_path(event_context, item, timeout);
 267     }
 268
 269     if (((SPEventContextClass *) parent_class)->item_handler)
 270         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 271
 272     return ret;
 273 }
 274
 275 static gint
 276 sp_node_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 277 {
 278     SPDesktop *desktop = event_context->desktop;
 279     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 280
 281     SPNodeContext *nc = SP_NODE_CONTEXT(event_context);
 282     double const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px
 283     event_context->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100); // read every time, to make prefs changes really live
 284     int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
 285     double const offset = prefs_get_double_attribute_limited("options.defaultscale", "value", 2, 0, 1000);
 286
 287     if ( (nc->flash_tempitem) && (nc->remove_flash_counter <= 0) ) {
 288         desktop->remove_temporary_canvasitem(nc->flash_tempitem);
 289         nc->flash_tempitem = NULL;
 290         nc->flashed_item = NULL; // also reset this one, so the next time the same object is hovered over it shows again the highlight
 291     } else {
 292         nc->remove_flash_counter--;
 293     }
 294
 295     gint ret = FALSE;
 296     switch (event->type) {
 297         case GDK_BUTTON_PRESS:
 298             if (event->button.button == 1 && !event_context->space_panning) {
 299                 // save drag origin
 300                 event_context->xp = (gint) event->button.x;
 301                 event_context->yp = (gint) event->button.y;
 302                 event_context->within_tolerance = true;
 303                 nc->shape_editor->cancel_hit();
 304
 305                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 306                     if (!nc->drag) {
 307                         if (nc->shape_editor->has_nodepath() && selection->single() /* && item_over */) {
 308                             // save drag origin
 309                             bool over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), true);
 310                             //only dragging curves
 311                             if (over_stroke) {
 312                                 ret = TRUE;
 313                                 break;
 314                             }
 315                         }
 316                     }
 317                 }
 318                 NR::Point const button_w(event->button.x,
 319                                          event->button.y);
 320                 NR::Point const button_dt(desktop->w2d(button_w));
 321                 Inkscape::Rubberband::get()->start(desktop, button_dt);
 322                 nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 323                 desktop->updateNow();
 324                 ret = TRUE;
 325             }
 326             break;
 327         case GDK_MOTION_NOTIFY:
 328             if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
 329
 330                 if ( event_context->within_tolerance
 331                      && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 332                      && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 333                     break; // do not drag if we're within tolerance from origin
 334                 }
 335
 336                 // The path went away while dragging; throw away any further motion
 337                 // events until the mouse pointer is released.
 338
 339                 if (nc->shape_editor->hits_curve() && !nc->shape_editor->has_nodepath()) {
 340                   break;
 341                 }
 342
 343                 // Once the user has moved farther than tolerance from the original location
 344                 // (indicating they intend to move the object, not click), then always process the
 345                 // motion notify coordinates as given (no snapping back to origin)
 346                 event_context->within_tolerance = false;
 347
 348                 // Once we determine what the user is doing (dragging either a node or the
 349                 // selection rubberband), make sure we continue to perform that operation
 350                 // until the mouse pointer is lifted.
 351                 if (nc->current_state == SP_NODE_CONTEXT_INACTIVE) {
 352                     if (nc->shape_editor->hits_curve() && nc->shape_editor->has_nodepath()) {
 353                         nc->current_state = SP_NODE_CONTEXT_NODE_DRAGGING;
 354                     } else {
 355                         nc->current_state = SP_NODE_CONTEXT_RUBBERBAND_DRAGGING;
 356                     }
 357                 }
 358
 359                 switch (nc->current_state) {
 360                     case SP_NODE_CONTEXT_NODE_DRAGGING:
 361                         {
 362                             nc->shape_editor->curve_drag (event->motion.x, event->motion.y);
 363
 364                             gobble_motion_events(GDK_BUTTON1_MASK);
 365                             break;
 366                         }
 367                     case SP_NODE_CONTEXT_RUBBERBAND_DRAGGING:
 368                         if (Inkscape::Rubberband::get()->is_started()) {
 369                             NR::Point const motion_w(event->motion.x,
 370                                                 event->motion.y);
 371                             NR::Point const motion_dt(desktop->w2d(motion_w));
 372                             Inkscape::Rubberband::get()->move(motion_dt);
 373                         }
 374                         break;
 375                 }
 376
 377                 nc->drag = TRUE;
 378                 ret = TRUE;
 379             } else {
 380                 if (!nc->shape_editor->has_nodepath() || selection->singleItem() == NULL) {
 381                     break;
 382                 }
 383
 384                 bool over_stroke = false;
 385                 over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->motion.x, event->motion.y), false);
 386
 387                 if (nc->cursor_drag && !over_stroke) {
 388                     event_context->cursor_shape = cursor_node_xpm;
 389                     event_context->hot_x = 1;
 390                     event_context->hot_y = 1;
 391                     sp_event_context_update_cursor(event_context);
 392                     nc->cursor_drag = false;
 393                 } else if (!nc->cursor_drag && over_stroke) {
 394                     event_context->cursor_shape = cursor_node_d_xpm;
 395                     event_context->hot_x = 1;
 396                     event_context->hot_y = 1;
 397                     sp_event_context_update_cursor(event_context);
 398                     nc->cursor_drag = true;
 399                 }
 400             }
 401             break;
 402
 403         case GDK_2BUTTON_PRESS:
 404         case GDK_BUTTON_RELEASE:
 405             if ( (event->button.button == 1) && (!nc->drag) && !event_context->space_panning) {
 406                 // find out clicked item, disregarding groups, honoring Alt
 407                 SPItem *item_clicked = sp_event_context_find_item (desktop,
 408                         NR::Point(event->button.x, event->button.y),
 409                         (event->button.state & GDK_MOD1_MASK) && !(event->button.state & GDK_CONTROL_MASK), TRUE);
 410
 411                 event_context->xp = event_context->yp = 0;
 412
 413                 bool over_stroke = false;
 414                 if (nc->shape_editor->has_nodepath()) {
 415                     over_stroke = nc->shape_editor->is_over_stroke(NR::Point(event->button.x, event->button.y), false);
 416                 }
 417
 418                 if (item_clicked || over_stroke) {
 419                     if (over_stroke || nc->added_node) {
 420                         switch (event->type) {
 421                             case GDK_BUTTON_RELEASE:
 422                                 if (event->button.state & GDK_CONTROL_MASK && event->button.state & GDK_MOD1_MASK) {
 423                                     //add a node
 424                                     nc->shape_editor->add_node_near_point();
 425                                 } else {
 426                                     if (nc->added_node) { // we just received double click, ignore release
 427                                         nc->added_node = false;
 428                                         break;
 429                                     }
 430                                     //select the segment
 431                                     if (event->button.state & GDK_SHIFT_MASK) {
 432                                         nc->shape_editor->select_segment_near_point(true);
 433                                     } else {
 434                                         nc->shape_editor->select_segment_near_point(false);
 435                                     }
 436                                     desktop->updateNow();
 437                                 }
 438                                 break;
 439                             case GDK_2BUTTON_PRESS:
 440                                 //add a node
 441                                 nc->shape_editor->add_node_near_point();
 442                                 nc->added_node = true;
 443                                 break;
 444                             default:
 445                                 break;
 446                         }
 447                     } else if (event->button.state & GDK_SHIFT_MASK) {
 448                         selection->toggle(item_clicked);
 449                         desktop->updateNow();
 450                     } else {
 451                         selection->set(item_clicked);
 452                         desktop->updateNow();
 453                     }
 454                     Inkscape::Rubberband::get()->stop();
 455                     ret = TRUE;
 456                     break;
 457                 }
 458             }
 459             if (event->type == GDK_BUTTON_RELEASE) {
 460                 event_context->xp = event_context->yp = 0;
 461                 if (event->button.button == 1) {
 462                     NR::Maybe<NR::Rect> b = Inkscape::Rubberband::get()->getRectangle();
 463
 464                     if (nc->shape_editor->hits_curve() && !event_context->within_tolerance) { //drag curve
 465                         nc->shape_editor->finish_drag();
 466                     } else if (b && !event_context->within_tolerance) { // drag to select
 467                         nc->shape_editor->select_rect(*b, event->button.state & GDK_SHIFT_MASK);
 468                     } else {
 469                         if (!(nc->rb_escaped)) { // unless something was cancelled
 470                             if (nc->shape_editor->has_selection())
 471                                 nc->shape_editor->deselect();
 472                             else
 473                                 sp_desktop_selection(desktop)->clear();
 474                         }
 475                     }
 476                     ret = TRUE;
 477                     Inkscape::Rubberband::get()->stop();
 478                     desktop->updateNow();
 479                     nc->rb_escaped = false;
 480                     nc->drag = FALSE;
 481                     nc->shape_editor->cancel_hit();
 482                     nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 483                 }
 484             }
 485             break;
 486         case GDK_KEY_PRESS:
 487             switch (get_group0_keyval(&event->key)) {
 488                 case GDK_Insert:
 489                 case GDK_KP_Insert:
 490                     // with any modifiers
 491                     nc->shape_editor->add_node();
 492                     ret = TRUE;
 493                     break;
 494                 case GDK_Delete:
 495                 case GDK_KP_Delete:
 496                 case GDK_BackSpace:
 497                     if (MOD__CTRL_ONLY) {
 498                         nc->shape_editor->delete_nodes();
 499                     } else {
 500                         nc->shape_editor->delete_nodes_preserving_shape();
 501                     }
 502                     ret = TRUE;
 503                     break;
 504                 case GDK_C:
 505                 case GDK_c:
 506                     if (MOD__SHIFT_ONLY) {
 507                         nc->shape_editor->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                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SMOOTH);
 515                         ret = TRUE;
 516                     }
 517                     break;
 518                 case GDK_Y:
 519                 case GDK_y:
 520                     if (MOD__SHIFT_ONLY) {
 521                         nc->shape_editor->set_node_type(Inkscape::NodePath::NODE_SYMM);
 522                         ret = TRUE;
 523                     }
 524                     break;
 525                 case GDK_B:
 526                 case GDK_b:
 527                     if (MOD__SHIFT_ONLY) {
 528                         nc->shape_editor->break_at_nodes();
 529                         ret = TRUE;
 530                     }
 531                     break;
 532                 case GDK_J:
 533                 case GDK_j:
 534                     if (MOD__SHIFT_ONLY) {
 535                         nc->shape_editor->join_nodes();
 536                         ret = TRUE;
 537                     }
 538                     break;
 539                 case GDK_D:
 540                 case GDK_d:
 541                     if (MOD__SHIFT_ONLY) {
 542                         nc->shape_editor->duplicate_nodes();
 543                         ret = TRUE;
 544                     }
 545                     break;
 546                 case GDK_L:
 547                 case GDK_l:
 548                     if (MOD__SHIFT_ONLY) {
 549                         nc->shape_editor->set_type_of_segments(NR_LINETO);
 550                         ret = TRUE;
 551                     }
 552                     break;
 553                 case GDK_U:
 554                 case GDK_u:
 555                     if (MOD__SHIFT_ONLY) {
 556                         nc->shape_editor->set_type_of_segments(NR_CURVETO);
 557                         ret = TRUE;
 558                     }
 559                     break;
 560                 case GDK_R:
 561                 case GDK_r:
 562                     if (MOD__SHIFT_ONLY) {
 563                         // FIXME: add top panel button
 564                         sp_selected_path_reverse();
 565                         ret = TRUE;
 566                     }
 567                     break;
 568                 case GDK_x:
 569                 case GDK_X:
 570                     if (MOD__ALT_ONLY) {
 571                         desktop->setToolboxFocusTo ("altx-nodes");
 572                         ret = TRUE;
 573                     }
 574                     break;
 575                 case GDK_Left: // move selection left
 576                 case GDK_KP_Left:
 577                 case GDK_KP_4:
 578                     if (!MOD__CTRL) { // not ctrl
 579                         gint mul = 1 + gobble_key_events(
 580                             get_group0_keyval(&event->key), 0); // with any mask
 581                         if (MOD__ALT) { // alt
 582                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(mul*-10, 0); // shift
 583                             else nc->shape_editor->move_nodes_screen(mul*-1, 0); // no shift
 584                         }
 585                         else { // no alt
 586                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*-10*nudge, 0); // shift
 587                             else nc->shape_editor->move_nodes(mul*-nudge, 0); // no shift
 588                         }
 589                         ret = TRUE;
 590                     }
 591                     break;
 592                 case GDK_Up: // move selection up
 593                 case GDK_KP_Up:
 594                 case GDK_KP_8:
 595                     if (!MOD__CTRL) { // not ctrl
 596                         gint mul = 1 + gobble_key_events(
 597                             get_group0_keyval(&event->key), 0); // with any mask
 598                         if (MOD__ALT) { // alt
 599                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(0, mul*10); // shift
 600                             else nc->shape_editor->move_nodes_screen(0, mul*1); // no shift
 601                         }
 602                         else { // no alt
 603                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*10*nudge); // shift
 604                             else nc->shape_editor->move_nodes(0, mul*nudge); // no shift
 605                         }
 606                         ret = TRUE;
 607                     }
 608                     break;
 609                 case GDK_Right: // move selection right
 610                 case GDK_KP_Right:
 611                 case GDK_KP_6:
 612                     if (!MOD__CTRL) { // not ctrl
 613                         gint mul = 1 + gobble_key_events(
 614                             get_group0_keyval(&event->key), 0); // with any mask
 615                         if (MOD__ALT) { // alt
 616                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(mul*10, 0); // shift
 617                             else nc->shape_editor->move_nodes_screen(mul*1, 0); // no shift
 618                         }
 619                         else { // no alt
 620                             if (MOD__SHIFT) nc->shape_editor->move_nodes(mul*10*nudge, 0); // shift
 621                             else nc->shape_editor->move_nodes(mul*nudge, 0); // no shift
 622                         }
 623                         ret = TRUE;
 624                     }
 625                     break;
 626                 case GDK_Down: // move selection down
 627                 case GDK_KP_Down:
 628                 case GDK_KP_2:
 629                     if (!MOD__CTRL) { // not ctrl
 630                         gint mul = 1 + gobble_key_events(
 631                             get_group0_keyval(&event->key), 0); // with any mask
 632                         if (MOD__ALT) { // alt
 633                             if (MOD__SHIFT) nc->shape_editor->move_nodes_screen(0, mul*-10); // shift
 634                             else nc->shape_editor->move_nodes_screen(0, mul*-1); // no shift
 635                         }
 636                         else { // no alt
 637                             if (MOD__SHIFT) nc->shape_editor->move_nodes(0, mul*-10*nudge); // shift
 638                             else nc->shape_editor->move_nodes(0, mul*-nudge); // no shift
 639                         }
 640                         ret = TRUE;
 641                     }
 642                     break;
 643                 case GDK_Escape:
 644                 {
 645                     NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();
 646                     if (b) {
 647                         Inkscape::Rubberband::get()->stop();
 648                         nc->current_state = SP_NODE_CONTEXT_INACTIVE;
 649                         nc->rb_escaped = true;
 650                     } else {
 651                         if (nc->shape_editor->has_selection()) {
 652                             nc->shape_editor->deselect();
 653                         } else {
 654                             sp_desktop_selection(desktop)->clear();
 655                         }
 656                     }
 657                     ret = TRUE;
 658                     break;
 659                 }
 660
 661                 case GDK_bracketleft:
 662                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 663                         if (nc->leftctrl)
 664                             nc->shape_editor->rotate_nodes (M_PI/snaps, -1, false);
 665                         if (nc->rightctrl)
 666                             nc->shape_editor->rotate_nodes (M_PI/snaps, 1, false);
 667                     } else if ( MOD__ALT && !MOD__CTRL ) {
 668                         if (nc->leftalt && nc->rightalt)
 669                             nc->shape_editor->rotate_nodes (1, 0, true);
 670                         else {
 671                             if (nc->leftalt)
 672                                 nc->shape_editor->rotate_nodes (1, -1, true);
 673                             if (nc->rightalt)
 674                                 nc->shape_editor->rotate_nodes (1, 1, true);
 675                         }
 676                     } else if ( snaps != 0 ) {
 677                         nc->shape_editor->rotate_nodes (M_PI/snaps, 0, false);
 678                     }
 679                     ret = TRUE;
 680                     break;
 681                 case GDK_bracketright:
 682                     if ( MOD__CTRL && !MOD__ALT && ( snaps != 0 ) ) {
 683                         if (nc->leftctrl)
 684                             nc->shape_editor->rotate_nodes (-M_PI/snaps, -1, false);
 685                         if (nc->rightctrl)
 686                             nc->shape_editor->rotate_nodes (-M_PI/snaps, 1, false);
 687                     } else if ( MOD__ALT && !MOD__CTRL ) {
 688                         if (nc->leftalt && nc->rightalt)
 689                             nc->shape_editor->rotate_nodes (-1, 0, true);
 690                         else {
 691                             if (nc->leftalt)
 692                                 nc->shape_editor->rotate_nodes (-1, -1, true);
 693                             if (nc->rightalt)
 694                                 nc->shape_editor->rotate_nodes (-1, 1, true);
 695                         }
 696                     } else if ( snaps != 0 ) {
 697                         nc->shape_editor->rotate_nodes (-M_PI/snaps, 0, false);
 698                     }
 699                     ret = TRUE;
 700                     break;
 701                 case GDK_less:
 702                 case GDK_comma:
 703                     if (MOD__CTRL) {
 704                         if (nc->leftctrl)
 705                             nc->shape_editor->scale_nodes(-offset, -1);
 706                         if (nc->rightctrl)
 707                             nc->shape_editor->scale_nodes(-offset, 1);
 708                     } else if (MOD__ALT) {
 709                         if (nc->leftalt && nc->rightalt)
 710                             nc->shape_editor->scale_nodes_screen (-1, 0);
 711                         else {
 712                             if (nc->leftalt)
 713                                 nc->shape_editor->scale_nodes_screen (-1, -1);
 714                             if (nc->rightalt)
 715                                 nc->shape_editor->scale_nodes_screen (-1, 1);
 716                         }
 717                     } else {
 718                         nc->shape_editor->scale_nodes (-offset, 0);
 719                     }
 720                     ret = TRUE;
 721                     break;
 722                 case GDK_greater:
 723                 case GDK_period:
 724                     if (MOD__CTRL) {
 725                         if (nc->leftctrl)
 726                             nc->shape_editor->scale_nodes (offset, -1);
 727                         if (nc->rightctrl)
 728                             nc->shape_editor->scale_nodes (offset, 1);
 729                     } else if (MOD__ALT) {
 730                         if (nc->leftalt && nc->rightalt)
 731                             nc->shape_editor->scale_nodes_screen (1, 0);
 732                         else {
 733                             if (nc->leftalt)
 734                                 nc->shape_editor->scale_nodes_screen (1, -1);
 735                             if (nc->rightalt)
 736                                 nc->shape_editor->scale_nodes_screen (1, 1);
 737                         }
 738                     } else {
 739                         nc->shape_editor->scale_nodes (offset, 0);
 740                     }
 741                     ret = TRUE;
 742                     break;
 743
 744                 case GDK_Alt_L:
 745                     nc->leftalt = TRUE;
 746                     sp_node_context_show_modifier_tip(event_context, event);
 747                     break;
 748                 case GDK_Alt_R:
 749                     nc->rightalt = TRUE;
 750                     sp_node_context_show_modifier_tip(event_context, event);
 751                     break;
 752                 case GDK_Control_L:
 753                     nc->leftctrl = TRUE;
 754                     sp_node_context_show_modifier_tip(event_context, event);
 755                     break;
 756                 case GDK_Control_R:
 757                     nc->rightctrl = TRUE;
 758                     sp_node_context_show_modifier_tip(event_context, event);
 759                     break;
 760                 case GDK_Shift_L:
 761                 case GDK_Shift_R:
 762                 case GDK_Meta_L:
 763                 case GDK_Meta_R:
 764                     sp_node_context_show_modifier_tip(event_context, event);
 765                     break;
 766                 default:
 767                     ret = node_key(event);
 768                     break;
 769             }
 770             break;
 771         case GDK_KEY_RELEASE:
 772             switch (get_group0_keyval(&event->key)) {
 773                 case GDK_Alt_L:
 774                     nc->leftalt = FALSE;
 775                     event_context->defaultMessageContext()->clear();
 776                     break;
 777                 case GDK_Alt_R:
 778                     nc->rightalt = FALSE;
 779                     event_context->defaultMessageContext()->clear();
 780                     break;
 781                 case GDK_Control_L:
 782                     nc->leftctrl = FALSE;
 783                     event_context->defaultMessageContext()->clear();
 784                     break;
 785                 case GDK_Control_R:
 786                     nc->rightctrl = FALSE;
 787                     event_context->defaultMessageContext()->clear();
 788                     break;
 789                 case GDK_Shift_L:
 790                 case GDK_Shift_R:
 791                 case GDK_Meta_L:
 792                 case GDK_Meta_R:
 793                     event_context->defaultMessageContext()->clear();
 794                     break;
 795             }
 796             break;
 797         default:
 798             break;
 799     }
 800
 801     if (!ret) {
 802         if (((SPEventContextClass *) parent_class)->root_handler)
 803             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 804     }
 805
 806     return ret;
 807 }
 808
 809
 810 /*
 811   Local Variables:
 812   mode:c++
 813   c-file-style:"stroustrup"
 814   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 815   indent-tabs-mode:nil
 816   fill-column:99
 817   End:
 818 */
 819 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :