src/select-context.cpp

   1 /*
   2  * Selection and transformation context
   3  *
   4  * Authors:
   5  *   Lauris Kaplinski <lauris@kaplinski.com>
   6  *   bulia byak <buliabyak@users.sf.net>
   7  *   Abhishek Sharma
   8  *   Jon A. Cruz <jon@joncruz.org>
   9  *
  10  * Copyright (C) 2010      authors
  11  * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
  12  * Copyright (C) 1999-2005 Authors
  13  *
  14  * Released under GNU GPL, read the file 'COPYING' for more information
  15  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include "config.h"
  19 #endif
  20 #include <cstring>
  21 #include <string>
  22 #include <gdk/gdkkeysyms.h>
  23 #include "macros.h"
  24 #include "rubberband.h"
  25 #include "document.h"
  26 #include "selection.h"
  27 #include "seltrans-handles.h"
  28 #include "sp-cursor.h"
  29 #include "pixmaps/cursor-select-m.xpm"
  30 #include "pixmaps/cursor-select-d.xpm"
  31 #include "pixmaps/handles.xpm"
  32 #include <glibmm/i18n.h>
  33
  34 #include "select-context.h"
  35 #include "selection-chemistry.h"
  36 #include "desktop.h"
  37 #include "desktop-handles.h"
  38 #include "sp-root.h"
  39 #include "preferences.h"
  40 #include "tools-switch.h"
  41 #include "message-stack.h"
  42 #include "selection-describer.h"
  43 #include "seltrans.h"
  44 #include "box3d.h"
  45 #include "display/sp-canvas.h"
  46 #include "display/nr-arena-item.h"
  47
  48 using Inkscape::DocumentUndo;
  49
  50 static void sp_select_context_class_init(SPSelectContextClass *klass);
  51 static void sp_select_context_init(SPSelectContext *select_context);
  52 static void sp_select_context_dispose(GObject *object);
  53
  54 static void sp_select_context_setup(SPEventContext *ec);
  55 static void sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
  56 static gint sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  57 static gint sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
  58
  59 static SPEventContextClass *parent_class;
  60
  61 static GdkCursor *CursorSelectMouseover = NULL;
  62 static GdkCursor *CursorSelectDragging = NULL;
  63 GdkPixbuf *handles[13];
  64
  65 static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
  66 static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
  67
  68 static gint xp = 0, yp = 0; // where drag started
  69 static gint tolerance = 0;
  70 static bool within_tolerance = false;
  71
  72 GtkType
  73 sp_select_context_get_type(void)
  74 {
  75     static GType type = 0;
  76     if (!type) {
  77         GTypeInfo info = {
  78             sizeof(SPSelectContextClass),
  79             NULL, NULL,
  80             (GClassInitFunc) sp_select_context_class_init,
  81             NULL, NULL,
  82             sizeof(SPSelectContext),
  83             4,
  84             (GInstanceInitFunc) sp_select_context_init,
  85             NULL,   /* value_table */
  86         };
  87         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPSelectContext", &info, (GTypeFlags)0);
  88     }
  89     return type;
  90 }
  91
  92 static void
  93 sp_select_context_class_init(SPSelectContextClass *klass)
  94 {
  95     GObjectClass *object_class = (GObjectClass *) klass;
  96     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
  97
  98     parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
  99
 100     object_class->dispose = sp_select_context_dispose;
 101
 102     event_context_class->setup = sp_select_context_setup;
 103     event_context_class->set = sp_select_context_set;
 104     event_context_class->root_handler = sp_select_context_root_handler;
 105     event_context_class->item_handler = sp_select_context_item_handler;
 106 }
 107
 108 static void
 109 sp_select_context_init(SPSelectContext *sc)
 110 {
 111     sc->dragging = FALSE;
 112     sc->moved = FALSE;
 113     sc->button_press_shift = false;
 114     sc->button_press_ctrl = false;
 115     sc->button_press_alt = false;
 116     sc->cycling_items = NULL;
 117     sc->cycling_items_cmp = NULL;
 118     sc->cycling_items_selected_before = NULL;
 119     sc->cycling_cur_item = NULL;
 120     sc->_seltrans = NULL;
 121     sc->_describer = NULL;
 122
 123     // cursors in select context
 124     CursorSelectMouseover = sp_cursor_new_from_xpm(cursor_select_m_xpm , 1, 1);
 125     CursorSelectDragging = sp_cursor_new_from_xpm(cursor_select_d_xpm , 1, 1);
 126     // selection handles
 127     handles[0]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_nw_xpm);
 128     handles[1]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_ne_xpm);
 129     handles[2]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_h_xpm);
 130     handles[3]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_v_xpm);
 131     handles[4]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_nw_xpm);
 132     handles[5]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_n_xpm);
 133     handles[6]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_ne_xpm);
 134     handles[7]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_e_xpm);
 135     handles[8]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_se_xpm);
 136     handles[9]  = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_s_xpm);
 137     handles[10] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_sw_xpm);
 138     handles[11] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_w_xpm);
 139     handles[12] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_center_xpm);
 140 }
 141
 142 static void
 143 sp_select_context_dispose(GObject *object)
 144 {
 145     SPSelectContext *sc = SP_SELECT_CONTEXT(object);
 146     SPEventContext * ec = SP_EVENT_CONTEXT (object);
 147
 148     ec->enableGrDrag(false);
 149
 150     if (sc->grabbed) {
 151         sp_canvas_item_ungrab(sc->grabbed, GDK_CURRENT_TIME);
 152         sc->grabbed = NULL;
 153     }
 154
 155     delete sc->_seltrans;
 156     sc->_seltrans = NULL;
 157     delete sc->_describer;
 158     sc->_describer = NULL;
 159
 160     if (CursorSelectDragging) {
 161         gdk_cursor_unref (CursorSelectDragging);
 162         CursorSelectDragging = NULL;
 163     }
 164     if (CursorSelectMouseover) {
 165         gdk_cursor_unref (CursorSelectMouseover);
 166         CursorSelectMouseover = NULL;
 167     }
 168
 169     G_OBJECT_CLASS(parent_class)->dispose(object);
 170 }
 171
 172 static void
 173 sp_select_context_setup(SPEventContext *ec)
 174 {
 175     SPSelectContext *select_context = SP_SELECT_CONTEXT(ec);
 176
 177     if (((SPEventContextClass *) parent_class)->setup) {
 178         ((SPEventContextClass *) parent_class)->setup(ec);
 179     }
 180
 181     SPDesktop *desktop = ec->desktop;
 182
 183     select_context->_describer = new Inkscape::SelectionDescriber(
 184                 desktop->selection,
 185                 desktop->messageStack(),
 186                 _("Click selection to toggle scale/rotation handles"),
 187                 _("No objects selected. Click, Shift+click, Alt+scroll mouse on top of objects, or drag around objects to select.")
 188         );
 189
 190     select_context->_seltrans = new Inkscape::SelTrans(desktop);
 191
 192     sp_event_context_read(ec, "show");
 193     sp_event_context_read(ec, "transform");
 194
 195     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 196     if (prefs->getBool("/tools/select/gradientdrag")) {
 197         ec->enableGrDrag();
 198     }
 199 }
 200
 201 static void
 202 sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
 203 {
 204     SPSelectContext *sc = SP_SELECT_CONTEXT(ec);
 205     Glib::ustring path = val->getEntryName();
 206
 207     if (path == "show") {
 208         if (val->getString() == "outline") {
 209             sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
 210         } else {
 211             sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
 212         }
 213     }
 214 }
 215
 216 static bool
 217 sp_select_context_abort(SPEventContext *event_context)
 218 {
 219     SPDesktop *desktop = event_context->desktop;
 220     SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
 221     Inkscape::SelTrans *seltrans = sc->_seltrans;
 222
 223     if (sc->dragging) {
 224         if (sc->moved) { // cancel dragging an object
 225             seltrans->ungrab();
 226             sc->moved = FALSE;
 227             sc->dragging = FALSE;
 228             sp_event_context_discard_delayed_snap_event(event_context);
 229             drag_escaped = 1;
 230
 231             if (sc->item) {
 232                 // only undo if the item is still valid
 233                 if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {
 234                     DocumentUndo::undo(sp_desktop_document(desktop));
 235                 }
 236
 237                 sp_object_unref( SP_OBJECT(sc->item), NULL);
 238             } else if (sc->button_press_ctrl) {
 239                 // NOTE:  This is a workaround to a bug.
 240                 // When the ctrl key is held, sc->item is not defined
 241                 // so in this case (only), we skip the object doc check
 242                 DocumentUndo::undo(sp_desktop_document(desktop));
 243             }
 244             sc->item = NULL;
 245
 246             SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
 247             return true;
 248         }
 249     } else {
 250         if (Inkscape::Rubberband::get(desktop)->is_started()) {
 251             Inkscape::Rubberband::get(desktop)->stop();
 252             rb_escaped = 1;
 253             SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
 254             SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
 255             return true;
 256         }
 257     }
 258     return false;
 259 }
 260
 261 bool
 262 key_is_a_modifier (guint key) {
 263     return (key == GDK_Alt_L ||
 264                 key == GDK_Alt_R ||
 265                 key == GDK_Control_L ||
 266                 key == GDK_Control_R ||
 267                 key == GDK_Shift_L ||
 268                 key == GDK_Shift_R ||
 269                 key == GDK_Meta_L ||  // Meta is when you press Shift+Alt (at least on my machine)
 270             key == GDK_Meta_R);
 271 }
 272
 273 void
 274 sp_select_context_up_one_layer(SPDesktop *desktop)
 275 {
 276     /* Click in empty place, go up one level -- but don't leave a layer to root.
 277      *
 278      * (Rationale: we don't usually allow users to go to the root, since that
 279      * detracts from the layer metaphor: objects at the root level can in front
 280      * of or behind layers.  Whereas it's fine to go to the root if editing
 281      * a document that has no layers (e.g. a non-Inkscape document).)
 282      *
 283      * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
 284      * document), we might consider further restricting the below to disallow
 285      * leaving a layer to go to a non-layer.
 286      */
 287     SPObject *const current_layer = desktop->currentLayer();
 288     if (current_layer) {
 289         SPObject *const parent = SP_OBJECT_PARENT(current_layer);
 290         if ( parent
 291              && ( SP_OBJECT_PARENT(parent)
 292                   || !( SP_IS_GROUP(current_layer)
 293                         && ( SPGroup::LAYER
 294                              == SP_GROUP(current_layer)->layerMode() ) ) ) )
 295         {
 296             desktop->setCurrentLayer(parent);
 297             if (SP_IS_GROUP(current_layer) && SPGroup::LAYER != SP_GROUP(current_layer)->layerMode())
 298                 sp_desktop_selection(desktop)->set(current_layer);
 299         }
 300     }
 301 }
 302
 303 static gint
 304 sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 305 {
 306     gint ret = FALSE;
 307
 308     SPDesktop *desktop = event_context->desktop;
 309     SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
 310     Inkscape::SelTrans *seltrans = sc->_seltrans;
 311
 312     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 313     tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
 314
 315     // make sure we still have valid objects to move around
 316     if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
 317         sp_select_context_abort(event_context);
 318     }
 319
 320     switch (event->type) {
 321         case GDK_BUTTON_PRESS:
 322             if (event->button.button == 1 && !event_context->space_panning) {
 323                 /* Left mousebutton */
 324
 325                 // save drag origin
 326                 xp = (gint) event->button.x;
 327                 yp = (gint) event->button.y;
 328                 within_tolerance = true;
 329
 330                 // remember what modifiers were on before button press
 331                 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
 332                 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
 333                 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
 334
 335                 if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK)) {
 336                     // if shift or ctrl was pressed, do not move objects;
 337                     // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
 338                 } else {
 339                     sc->dragging = TRUE;
 340                     sc->moved = FALSE;
 341
 342                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
 343
 344                     sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
 345
 346                     // remember the clicked item in sc->item:
 347                     if (sc->item) {
 348                         sp_object_unref(sc->item, NULL);
 349                         sc->item = NULL;
 350                     }
 351                     sc->item = sp_event_context_find_item (desktop,
 352                                               Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
 353                     sp_object_ref(sc->item, NULL);
 354
 355                     rb_escaped = drag_escaped = 0;
 356
 357                     if (sc->grabbed) {
 358                         sp_canvas_item_ungrab(sc->grabbed, event->button.time);
 359                         sc->grabbed = NULL;
 360                     }
 361                     sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),
 362                                         GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
 363                                         GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK,
 364                                         NULL, event->button.time);
 365                     sc->grabbed = SP_CANVAS_ITEM(desktop->drawing);
 366
 367                     sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
 368
 369                     ret = TRUE;
 370                 }
 371             } else if (event->button.button == 3) {
 372                 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
 373                 sp_select_context_abort(event_context);
 374             }
 375             break;
 376
 377         case GDK_ENTER_NOTIFY:
 378         {
 379             if (!desktop->isWaitingCursor() && !sc->dragging) {
 380                 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectMouseover);
 381             }
 382             break;
 383         }
 384
 385         case GDK_LEAVE_NOTIFY:
 386             if (!desktop->isWaitingCursor() && !sc->dragging)
 387                 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
 388             break;
 389
 390         case GDK_KEY_PRESS:
 391             if (get_group0_keyval (&event->key) == GDK_space) {
 392                 if (sc->dragging && sc->grabbed) {
 393                     /* stamping mode: show content mode moving */
 394                     seltrans->stamp();
 395                     ret = TRUE;
 396                 }
 397             }
 398             break;
 399
 400         default:
 401             break;
 402     }
 403
 404     if (!ret) {
 405         if (((SPEventContextClass *) parent_class)->item_handler)
 406             ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 407     }
 408
 409     return ret;
 410 }
 411
 412 static void
 413 sp_select_context_cycle_through_items(SPSelectContext *sc, Inkscape::Selection *selection, GdkEventScroll *scroll_event, bool shift_pressed) {
 414     if (!sc->cycling_cur_item)
 415         return;
 416
 417     NRArenaItem *arenaitem;
 418     SPDesktop *desktop = SP_EVENT_CONTEXT(sc)->desktop;
 419     SPItem *item = SP_ITEM(sc->cycling_cur_item->data);
 420
 421     // Deactivate current item
 422     if (!g_list_find(sc->cycling_items_selected_before, item) && selection->includes(item))
 423         selection->remove(item);
 424     arenaitem = item->get_arenaitem(desktop->dkey);
 425     nr_arena_item_set_opacity (arenaitem, 0.3);
 426
 427     // Find next item and activate it
 428     GList *next;
 429     if (scroll_event->direction == GDK_SCROLL_UP) {
 430         next = sc->cycling_cur_item->next;
 431         if (next == NULL)
 432             next = sc->cycling_items;
 433     } else {
 434         next = sc->cycling_cur_item->prev;
 435         if (next == NULL)
 436             next = g_list_last(sc->cycling_items);
 437     }
 438     sc->cycling_cur_item = next;
 439     item = SP_ITEM(sc->cycling_cur_item->data);
 440     arenaitem = item->get_arenaitem(desktop->dkey);
 441     nr_arena_item_set_opacity (arenaitem, 1.0);
 442
 443     if (shift_pressed)
 444         selection->add(item);
 445     else
 446         selection->set(item);
 447 }
 448
 449 static gint
 450 sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 451 {
 452     SPItem *item = NULL;
 453     SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
 454     gint ret = FALSE;
 455
 456     SPDesktop *desktop = event_context->desktop;
 457     SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
 458     Inkscape::SelTrans *seltrans = sc->_seltrans;
 459     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 460     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 461
 462     // make sure we still have valid objects to move around
 463     if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
 464         sp_select_context_abort(event_context);
 465     }
 466
 467     switch (event->type) {
 468         case GDK_2BUTTON_PRESS:
 469             if (event->button.button == 1) {
 470                 if (!selection->isEmpty()) {
 471                     SPItem *clicked_item = (SPItem *) selection->itemList()->data;
 472                     if (SP_IS_GROUP(clicked_item) && !SP_IS_BOX3D(clicked_item)) { // enter group if it's not a 3D box
 473                         desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
 474                         sp_desktop_selection(desktop)->clear();
 475                         sc->dragging = false;
 476                         sp_event_context_discard_delayed_snap_event(event_context);
 477
 478                         sp_canvas_end_forced_full_redraws(desktop->canvas);
 479                     } else { // switch tool
 480                         Geom::Point const button_pt(event->button.x, event->button.y);
 481                         Geom::Point const p(desktop->w2d(button_pt));
 482                         tools_switch_by_item (desktop, clicked_item, p);
 483                     }
 484                 } else {
 485                     sp_select_context_up_one_layer(desktop);
 486                 }
 487                 ret = TRUE;
 488             }
 489             break;
 490         case GDK_BUTTON_PRESS:
 491             if (event->button.button == 1 && !event_context->space_panning) {
 492
 493                 // save drag origin
 494                 xp = (gint) event->button.x;
 495                 yp = (gint) event->button.y;
 496                 within_tolerance = true;
 497
 498                 Geom::Point const button_pt(event->button.x, event->button.y);
 499                 Geom::Point const p(desktop->w2d(button_pt));
 500                 if (event->button.state & GDK_MOD1_MASK)
 501                     Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
 502                 Inkscape::Rubberband::get(desktop)->start(desktop, p);
 503                 if (sc->grabbed) {
 504                     sp_canvas_item_ungrab(sc->grabbed, event->button.time);
 505                     sc->grabbed = NULL;
 506                 }
 507                 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
 508                                     GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
 509                                     NULL, event->button.time);
 510                 sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
 511
 512                 // remember what modifiers were on before button press
 513                 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
 514                 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
 515                 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
 516
 517                 sc->moved = FALSE;
 518
 519                 rb_escaped = drag_escaped = 0;
 520
 521                 ret = TRUE;
 522             } else if (event->button.button == 3) {
 523                 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
 524                 sp_select_context_abort(event_context);
 525             }
 526             break;
 527
 528         case GDK_MOTION_NOTIFY:
 529         {
 530                 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
 531                 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
 532                 Geom::Point const motion_pt(event->motion.x, event->motion.y);
 533                 Geom::Point const p(desktop->w2d(motion_pt));
 534
 535                 if ( within_tolerance
 536                      && ( abs( (gint) event->motion.x - xp ) < tolerance )
 537                      && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
 538                     break; // do not drag if we're within tolerance from origin
 539                 }
 540                 // Once the user has moved farther than tolerance from the original location
 541                 // (indicating they intend to move the object, not click), then always process the
 542                 // motion notify coordinates as given (no snapping back to origin)
 543                 within_tolerance = false;
 544
 545                 if (sc->button_press_ctrl || (sc->button_press_alt && !sc->button_press_shift && !selection->isEmpty())) {
 546                     // if it's not click and ctrl or alt was pressed (the latter with some selection
 547                     // but not with shift) we want to drag rather than rubberband
 548                         sc->dragging = TRUE;
 549                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
 550
 551                     sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
 552                 }
 553
 554                 if (sc->dragging) {
 555                     /* User has dragged fast, so we get events on root (lauris)*/
 556                     // not only that; we will end up here when ctrl-dragging as well
 557                     // and also when we started within tolerance, but trespassed tolerance outside of item
 558                     Inkscape::Rubberband::get(desktop)->stop();
 559                     SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
 560                     item_at_point = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), FALSE);
 561                     if (!item_at_point) // if no item at this point, try at the click point (bug 1012200)
 562                         item_at_point = desktop->getItemAtPoint(Geom::Point(xp, yp), FALSE);
 563                     if (item_at_point || sc->moved || sc->button_press_alt) {
 564                         // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
 565                         if (!sc->moved) {
 566                             item_in_group = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE);
 567                             group_at_point = desktop->getGroupAtPoint(Geom::Point(event->button.x, event->button.y));
 568                             if (SP_IS_LAYER(selection->single()))
 569                                 group_at_point = SP_GROUP(selection->single());
 570
 571                             // group-at-point is meant to be topmost item if it's a group,
 572                             // not topmost group of all items at point
 573                             if (group_at_point != item_in_group &&
 574                                 !(group_at_point && item_at_point &&
 575                                   group_at_point->isAncestorOf(item_at_point)))
 576                                 group_at_point = NULL;
 577
 578                             // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
 579                             if ((!item_in_group || !selection->includes(item_in_group)) &&
 580                                 (!group_at_point || !selection->includes(group_at_point))
 581                                 && !sc->button_press_alt) {
 582                                 // select what is under cursor
 583                                 if (!seltrans->isEmpty()) {
 584                                     seltrans->resetState();
 585                                 }
 586                                 // when simply ctrl-dragging, we don't want to go into groups
 587                                 if (item_at_point && !selection->includes(item_at_point))
 588                                     selection->set(item_at_point);
 589                             } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
 590                             seltrans->grab(p, -1, -1, FALSE, TRUE);
 591                             sc->moved = TRUE;
 592                         }
 593                         if (!seltrans->isEmpty())
 594                             seltrans->moveTo(p, event->button.state);
 595                         desktop->scroll_to_point(p);
 596                         gobble_motion_events(GDK_BUTTON1_MASK);
 597                         ret = TRUE;
 598                     } else {
 599                         sc->dragging = FALSE;
 600                         sp_event_context_discard_delayed_snap_event(event_context);
 601                         sp_canvas_end_forced_full_redraws(desktop->canvas);
 602                     }
 603                 } else {
 604                     if (Inkscape::Rubberband::get(desktop)->is_started()) {
 605                         Inkscape::Rubberband::get(desktop)->move(p);
 606                         if (Inkscape::Rubberband::get(desktop)->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
 607                             event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> objects to select them; release <b>Alt</b> to switch to rubberband selection"));
 608                         } else {
 609                             event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag around</b> objects to select them; press <b>Alt</b> to switch to touch selection"));
 610                         }
 611                         gobble_motion_events(GDK_BUTTON1_MASK);
 612                     }
 613                 }
 614             }
 615             break;
 616         }
 617         case GDK_BUTTON_RELEASE:
 618             xp = yp = 0;
 619             if ((event->button.button == 1) && (sc->grabbed) && !event_context->space_panning) {
 620                 if (sc->dragging) {
 621                     if (sc->moved) {
 622                         // item has been moved
 623                         seltrans->ungrab();
 624                         sc->moved = FALSE;
 625                     } else if (sc->item && !drag_escaped) {
 626                         // item has not been moved -> simply a click, do selecting
 627                         if (!selection->isEmpty()) {
 628                             if (event->button.state & GDK_SHIFT_MASK) {
 629                                 // with shift, toggle selection
 630                                 seltrans->resetState();
 631                                 selection->toggle(sc->item);
 632                             } else {
 633                                 SPObject* single = selection->single();
 634                                 // without shift, increase state (i.e. toggle scale/rotation handles)
 635                                 if (selection->includes(sc->item)) {
 636                                     seltrans->increaseState();
 637                                 } else if (SP_IS_LAYER(single) && single->isAncestorOf(sc->item)) {
 638                                     seltrans->increaseState();
 639                                 } else {
 640                                     seltrans->resetState();
 641                                     selection->set(sc->item);
 642                                 }
 643                             }
 644                         } else { // simple or shift click, no previous selection
 645                             seltrans->resetState();
 646                             selection->set(sc->item);
 647                         }
 648                     }
 649                     sc->dragging = FALSE;
 650                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectMouseover);
 651                     sp_event_context_discard_delayed_snap_event(event_context);
 652                     sp_canvas_end_forced_full_redraws(desktop->canvas);
 653
 654                     if (sc->item) {
 655                         sp_object_unref( SP_OBJECT(sc->item), NULL);
 656                     }
 657                     sc->item = NULL;
 658                 } else {
 659                     Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
 660                     if (r->is_started() && !within_tolerance) {
 661                         // this was a rubberband drag
 662                         GSList *items = NULL;
 663                         if (r->getMode() == RUBBERBAND_MODE_RECT) {
 664                             Geom::OptRect const b = r->getRectangle();
 665                             items = sp_desktop_document(desktop)->getItemsInBox(desktop->dkey, *b);
 666                         } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
 667                             items = sp_desktop_document(desktop)->getItemsAtPoints(desktop->dkey, r->getPoints());
 668                         }
 669
 670                         seltrans->resetState();
 671                         r->stop();
 672                         SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
 673
 674                         if (event->button.state & GDK_SHIFT_MASK) {
 675                             // with shift, add to selection
 676                             selection->addList (items);
 677                         } else {
 678                             // without shift, simply select anew
 679                             selection->setList (items);
 680                         }
 681                         g_slist_free (items);
 682                     } else { // it was just a click, or a too small rubberband
 683                         r->stop();
 684                         if (sc->button_press_shift && !rb_escaped && !drag_escaped) {
 685                             // this was a shift+click or alt+shift+click, select what was clicked upon
 686
 687                             sc->button_press_shift = false;
 688
 689                             if (sc->button_press_ctrl) {
 690                                 // go into groups, honoring Alt
 691                                 item = sp_event_context_find_item (desktop,
 692                                                    Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
 693                                 sc->button_press_ctrl = FALSE;
 694                             } else {
 695                                 // don't go into groups, honoring Alt
 696                                 item = sp_event_context_find_item (desktop,
 697                                                    Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
 698                             }
 699
 700                             if (item) {
 701                                 selection->toggle(item);
 702                                 item = NULL;
 703                             }
 704
 705                         } else if ((sc->button_press_ctrl || sc->button_press_alt) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click
 706
 707                             item = sp_event_context_find_item (desktop,
 708                                          Geom::Point(event->button.x, event->button.y), sc->button_press_alt, sc->button_press_ctrl);
 709
 710                             sc->button_press_ctrl = FALSE;
 711                             sc->button_press_alt = FALSE;
 712
 713                             if (item) {
 714                                 if (selection->includes(item)) {
 715                                     seltrans->increaseState();
 716                                 } else {
 717                                     seltrans->resetState();
 718                                     selection->set(item);
 719                                 }
 720                                 item = NULL;
 721                             }
 722
 723                         } else { // click without shift, simply deselect, unless with Alt or something was cancelled
 724                             if (!selection->isEmpty()) {
 725                                 if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK))
 726                                     selection->clear();
 727                                 rb_escaped = 0;
 728                                 ret = TRUE;
 729                             }
 730                         }
 731                     }
 732                     ret = TRUE;
 733                 }
 734                 if (sc->grabbed) {
 735                     sp_canvas_item_ungrab(sc->grabbed, event->button.time);
 736                     sc->grabbed = NULL;
 737                 }
 738
 739                 desktop->updateNow();
 740             }
 741             if (event->button.button == 1) {
 742                 Inkscape::Rubberband::get(desktop)->stop(); // might have been started in another tool!
 743             }
 744             sc->button_press_shift = false;
 745             sc->button_press_ctrl = false;
 746             sc->button_press_alt = false;
 747             break;
 748
 749         case GDK_SCROLL:
 750         {
 751             SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
 752             GdkEventScroll *scroll_event = (GdkEventScroll*) event;
 753
 754             if (scroll_event->state & GDK_MOD1_MASK) { // alt modified pressed
 755                 bool shift_pressed = scroll_event->state & GDK_SHIFT_MASK;
 756
 757                 /* Rebuild list of items underneath the mouse pointer */
 758                 Geom::Point p = desktop->d2w(desktop->point());
 759                 SPItem *item = desktop->getItemAtPoint(p, true, NULL);
 760
 761                 // Save pointer to current cycle-item so that we can find it again later, in the freshly built list
 762                 SPItem *tmp_cur_item = sc->cycling_cur_item ? SP_ITEM(sc->cycling_cur_item->data) : NULL;
 763                 g_list_free(sc->cycling_items);
 764                 sc->cycling_items = NULL;
 765                 sc->cycling_cur_item = NULL;
 766
 767                 while(item != NULL) {
 768                     sc->cycling_items = g_list_append(sc->cycling_items, item);
 769                     item = desktop->getItemAtPoint(p, true, item);
 770                 }
 771
 772                 /* Compare current item list with item list during previous scroll ... */
 773                 GList *l1, *l2;
 774                 bool item_lists_differ = false;
 775                 // Note that we can do an 'or' comparison in the loop because it is safe to call g_list_next with a NULL pointer.
 776                 for (l1 = sc->cycling_items, l2 = sc->cycling_items_cmp; l1 != NULL || l2 != NULL; l1 = g_list_next(l1), l2 = g_list_next(l2)) {
 777                     if ((l1 !=NULL && l2 == NULL) || (l1 == NULL && l2 != NULL) || (l1->data != l2->data)) {
 778                         item_lists_differ = true;
 779                         break;
 780                     }
 781                 }
 782
 783                 /* If list of items under mouse pointer hasn't changed ... */
 784                 if (!item_lists_differ) {
 785                     // ... find current item in the freshly built list and continue cycling ...
 786                     // TODO: This wouldn't be necessary if cycling_cur_item pointed to an element of cycling_items_cmp instead
 787                     sc->cycling_cur_item = g_list_find(sc->cycling_items, tmp_cur_item);
 788                     g_assert(sc->cycling_cur_item != NULL || sc->cycling_items == NULL);
 789                 } else {
 790                     // ... otherwise reset opacities for outdated items ...
 791                     NRArenaItem *arenaitem;
 792                     for(GList *l = sc->cycling_items_cmp; l != NULL; l = l->next) {
 793                         arenaitem = SP_ITEM(l->data)->get_arenaitem(desktop->dkey);
 794                         nr_arena_item_set_opacity (arenaitem, 1.0);
 795                         //if (!shift_pressed && !g_list_find(sc->cycling_items_selected_before, SP_ITEM(l->data)) && selection->includes(SP_ITEM(l->data)))
 796                         if (!g_list_find(sc->cycling_items_selected_before, SP_ITEM(l->data)) && selection->includes(SP_ITEM(l->data)))
 797                             selection->remove(SP_ITEM(l->data));
 798                     }
 799
 800                     // ... clear the lists ...
 801                     g_list_free(sc->cycling_items_cmp);
 802                     g_list_free(sc->cycling_items_selected_before);
 803                     sc->cycling_items_cmp = NULL;
 804                     sc->cycling_items_selected_before = NULL;
 805                     sc->cycling_cur_item = NULL;
 806
 807                     // ... and rebuild them with the new items.
 808                     sc->cycling_items_cmp = g_list_copy(sc->cycling_items);
 809                     SPItem *item;
 810                     for(GList *l = sc->cycling_items; l != NULL; l = l->next) {
 811                         item = SP_ITEM(l->data);
 812                         arenaitem = item->get_arenaitem(desktop->dkey);
 813                         nr_arena_item_set_opacity (arenaitem, 0.3);
 814                         if (selection->includes(item)) {
 815                             // already selected items are stored separately, too
 816                             sc->cycling_items_selected_before = g_list_append(sc->cycling_items_selected_before, item);
 817                         }
 818                     }
 819
 820                     // set the current item to the bottommost one so that the cycling step below re-starts at the top
 821                     sc->cycling_cur_item = g_list_last(sc->cycling_items);
 822                 }
 823
 824                 // Cycle through the items underneath the mouse pointer, one-by-one
 825                 sp_select_context_cycle_through_items(sc, selection, scroll_event, shift_pressed);
 826
 827                 ret = TRUE;
 828             }
 829             break;
 830         }
 831
 832         case GDK_KEY_PRESS: // keybindings for select context
 833
 834                         {
 835                         {
 836                 guint keyval = get_group0_keyval(&event->key);
 837             bool alt = ( MOD__ALT
 838                                     || (keyval == GDK_Alt_L)
 839                                     || (keyval == GDK_Alt_R)
 840                                     || (keyval == GDK_Meta_L)
 841                                     || (keyval == GDK_Meta_R));
 842
 843             if (!key_is_a_modifier (keyval)) {
 844                     event_context->defaultMessageContext()->clear();
 845             } else if (sc->grabbed || seltrans->isGrabbed()) {
 846                 if (Inkscape::Rubberband::get(desktop)->is_started()) {
 847                     // if Alt then change cursor to moving cursor:
 848                     if (alt) {
 849                         Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
 850                     }
 851                 } else {
 852                 // do not change the statusbar text when mousekey is down to move or transform the object,
 853                 // because the statusbar text is already updated somewhere else.
 854                    break;
 855                 }
 856             } else {
 857                     sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
 858                                                 _("<b>Ctrl</b>: click to select in groups; drag to move hor/vert"),
 859                                                 _("<b>Shift</b>: click to toggle select; drag for rubberband selection"),
 860                                                 _("<b>Alt</b>: click to select under; scroll mouse-wheel to cycle-select; drag to move selected or select by touch"));
 861                     // if Alt and nonempty selection, show moving cursor ("move selected"):
 862                     if (alt && !selection->isEmpty() && !desktop->isWaitingCursor()) {
 863                         gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
 864                     }
 865                     //*/
 866                     break;
 867             }
 868                         }
 869
 870             gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
 871                         gdouble const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
 872                         int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
 873
 874                         switch (get_group0_keyval (&event->key)) {
 875                 case GDK_Left: // move selection left
 876                 case GDK_KP_Left:
 877                 case GDK_KP_4:
 878                     if (!MOD__CTRL) { // not ctrl
 879                         gint mul = 1 + gobble_key_events(
 880                             get_group0_keyval(&event->key), 0); // with any mask
 881                         if (MOD__ALT) { // alt
 882                             if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*-10, 0); // shift
 883                             else sp_selection_move_screen(desktop, mul*-1, 0); // no shift
 884                         }
 885                         else { // no alt
 886                             if (MOD__SHIFT) sp_selection_move(desktop, mul*-10*nudge, 0); // shift
 887                             else sp_selection_move(desktop, mul*-nudge, 0); // no shift
 888                         }
 889                         ret = TRUE;
 890                     }
 891                     break;
 892                 case GDK_Up: // move selection up
 893                 case GDK_KP_Up:
 894                 case GDK_KP_8:
 895                     if (!MOD__CTRL) { // not ctrl
 896                         gint mul = 1 + gobble_key_events(
 897                             get_group0_keyval(&event->key), 0); // with any mask
 898                         if (MOD__ALT) { // alt
 899                             if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*10); // shift
 900                             else sp_selection_move_screen(desktop, 0, mul*1); // no shift
 901                         }
 902                         else { // no alt
 903                             if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*10*nudge); // shift
 904                             else sp_selection_move(desktop, 0, mul*nudge); // no shift
 905                         }
 906                         ret = TRUE;
 907                     }
 908                     break;
 909                 case GDK_Right: // move selection right
 910                 case GDK_KP_Right:
 911                 case GDK_KP_6:
 912                     if (!MOD__CTRL) { // not ctrl
 913                         gint mul = 1 + gobble_key_events(
 914                             get_group0_keyval(&event->key), 0); // with any mask
 915                         if (MOD__ALT) { // alt
 916                             if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*10, 0); // shift
 917                             else sp_selection_move_screen(desktop, mul*1, 0); // no shift
 918                         }
 919                         else { // no alt
 920                             if (MOD__SHIFT) sp_selection_move(desktop, mul*10*nudge, 0); // shift
 921                             else sp_selection_move(desktop, mul*nudge, 0); // no shift
 922                         }
 923                         ret = TRUE;
 924                     }
 925                     break;
 926                 case GDK_Down: // move selection down
 927                 case GDK_KP_Down:
 928                 case GDK_KP_2:
 929                     if (!MOD__CTRL) { // not ctrl
 930                         gint mul = 1 + gobble_key_events(
 931                             get_group0_keyval(&event->key), 0); // with any mask
 932                         if (MOD__ALT) { // alt
 933                             if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*-10); // shift
 934                             else sp_selection_move_screen(desktop, 0, mul*-1); // no shift
 935                         }
 936                         else { // no alt
 937                             if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*-10*nudge); // shift
 938                             else sp_selection_move(desktop, 0, mul*-nudge); // no shift
 939                         }
 940                         ret = TRUE;
 941                     }
 942                     break;
 943                 case GDK_Escape:
 944                     if (!sp_select_context_abort(event_context))
 945                         selection->clear();
 946                     ret = TRUE;
 947                     break;
 948
 949                 case GDK_a:
 950                 case GDK_A:
 951                     if (MOD__CTRL_ONLY) {
 952                         sp_edit_select_all(desktop);
 953                         ret = TRUE;
 954                     }
 955                     break;
 956                 case GDK_space:
 957                     /* stamping mode: show outline mode moving */
 958                     /* FIXME: Is next condition ok? (lauris) */
 959                     if (sc->dragging && sc->grabbed) {
 960                         seltrans->stamp();
 961                         ret = TRUE;
 962                     }
 963                     break;
 964                 case GDK_x:
 965                 case GDK_X:
 966                     if (MOD__ALT_ONLY) {
 967                         desktop->setToolboxFocusTo ("altx");
 968                         ret = TRUE;
 969                     }
 970                     break;
 971                 case GDK_bracketleft:
 972                     if (MOD__ALT) {
 973                         gint mul = 1 + gobble_key_events(
 974                             get_group0_keyval(&event->key), 0); // with any mask
 975                         sp_selection_rotate_screen(selection, mul*1);
 976                     } else if (MOD__CTRL) {
 977                         sp_selection_rotate(selection, 90);
 978                     } else if (snaps) {
 979                         sp_selection_rotate(selection, 180/snaps);
 980                     }
 981                     ret = TRUE;
 982                     break;
 983                 case GDK_bracketright:
 984                     if (MOD__ALT) {
 985                         gint mul = 1 + gobble_key_events(
 986                             get_group0_keyval(&event->key), 0); // with any mask
 987                         sp_selection_rotate_screen(selection, -1*mul);
 988                     } else if (MOD__CTRL) {
 989                         sp_selection_rotate(selection, -90);
 990                     } else if (snaps) {
 991                         sp_selection_rotate(selection, -180/snaps);
 992                     }
 993                     ret = TRUE;
 994                     break;
 995                 case GDK_less:
 996                 case GDK_comma:
 997                     if (MOD__ALT) {
 998                         gint mul = 1 + gobble_key_events(
 999                             get_group0_keyval(&event->key), 0); // with any mask
1000                         sp_selection_scale_screen(selection, -2*mul);
1001                     } else if (MOD__CTRL) {
1002                         sp_selection_scale_times(selection, 0.5);
1003                     } else {
1004                         gint mul = 1 + gobble_key_events(
1005                             get_group0_keyval(&event->key), 0); // with any mask
1006                         sp_selection_scale(selection, -offset*mul);
1007                     }
1008                     ret = TRUE;
1009                     break;
1010                 case GDK_greater:
1011                 case GDK_period:
1012                     if (MOD__ALT) {
1013                         gint mul = 1 + gobble_key_events(
1014                             get_group0_keyval(&event->key), 0); // with any mask
1015                         sp_selection_scale_screen(selection, 2*mul);
1016                     } else if (MOD__CTRL) {
1017                         sp_selection_scale_times(selection, 2);
1018                     } else {
1019                         gint mul = 1 + gobble_key_events(
1020                             get_group0_keyval(&event->key), 0); // with any mask
1021                         sp_selection_scale(selection, offset*mul);
1022                     }
1023                     ret = TRUE;
1024                     break;
1025                 case GDK_Return:
1026                     if (MOD__CTRL_ONLY) {
1027                         if (selection->singleItem()) {
1028                             SPItem *clicked_item = selection->singleItem();
1029                             if ( SP_IS_GROUP(clicked_item) ||
1030                                  SP_IS_BOX3D(clicked_item)) { // enter group or a 3D box
1031                                 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
1032                                 sp_desktop_selection(desktop)->clear();
1033                             } else {
1034                                 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
1035                             }
1036                         }
1037                         ret = TRUE;
1038                     }
1039                     break;
1040                 case GDK_BackSpace:
1041                     if (MOD__CTRL_ONLY) {
1042                         sp_select_context_up_one_layer(desktop);
1043                         ret = TRUE;
1044                     }
1045                     break;
1046                 case GDK_s:
1047                 case GDK_S:
1048                     if (MOD__SHIFT_ONLY) {
1049                         if (!selection->isEmpty()) {
1050                             seltrans->increaseState();
1051                         }
1052                         ret = TRUE;
1053                     }
1054                     break;
1055                 case GDK_g:
1056                 case GDK_G:
1057                     if (MOD__SHIFT_ONLY) {
1058                         sp_selection_to_guides(desktop);
1059                         ret = true;
1060                     }
1061                     break;
1062                 default:
1063                     break;
1064             }
1065             break;
1066                         }
1067         case GDK_KEY_RELEASE:
1068             {
1069             guint keyval = get_group0_keyval(&event->key);
1070             if (key_is_a_modifier (keyval))
1071                 event_context->defaultMessageContext()->clear();
1072
1073             bool alt = ( MOD__ALT
1074                          || (keyval == GDK_Alt_L)
1075                          || (keyval == GDK_Alt_R)
1076                          || (keyval == GDK_Meta_L)
1077                          || (keyval == GDK_Meta_R));
1078
1079             if (Inkscape::Rubberband::get(desktop)->is_started()) {
1080                 // if Alt then change cursor to moving cursor:
1081                 if (alt) {
1082                     Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_RECT);
1083                 }
1084             } else {
1085                 if (alt) { // TODO: Should we have a variable like is_cycling or is it harmless to run this piece of code each time?
1086                     // quit cycle-selection and reset opacities
1087                     SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
1088                     NRArenaItem *arenaitem;
1089                     for (GList *l = sc->cycling_items; l != NULL; l = g_list_next(l)) {
1090                         arenaitem = SP_ITEM(l->data)->get_arenaitem(desktop->dkey);
1091                         nr_arena_item_set_opacity (arenaitem, 1.0);
1092                     }
1093                     g_list_free(sc->cycling_items);
1094                     g_list_free(sc->cycling_items_selected_before);
1095                     g_list_free(sc->cycling_items_cmp);
1096                     sc->cycling_items = NULL;
1097                     sc->cycling_items_selected_before = NULL;
1098                     sc->cycling_cur_item = NULL;
1099                     sc->cycling_items_cmp = NULL;
1100                 }
1101             }
1102
1103             }
1104             // set cursor to default.
1105             if (!desktop->isWaitingCursor()) {
1106                 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
1107             }
1108             break;
1109         default:
1110             break;
1111     }
1112
1113     if (!ret) {
1114         if (((SPEventContextClass *) parent_class)->root_handler)
1115             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
1116     }
1117
1118     return ret;
1119 }
1120
1121
1122 /*
1123   Local Variables:
1124   mode:c++
1125   c-file-style:"stroustrup"
1126   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1127   indent-tabs-mode:nil
1128   fill-column:99
1129   End:
1130 */
1131 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :