src/box3d-context.cpp

   1 #define __SP_BOX3D_CONTEXT_C__
   2
   3 /*
   4  * 3D box drawing context
   5  *
   6  * Author:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *   bulia byak <buliabyak@users.sf.net>
   9  *
  10  * Copyright (C) 2007      Maximilian Albert <Anhalter42@gmx.de>
  11  * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
  12  * Copyright (C) 2000-2005 authors
  13  * Copyright (C) 2000-2001 Ximian, Inc.
  14  *
  15  * Released under GNU GPL, read the file 'COPYING' for more information
  16  */
  17
  18 #include "config.h"
  19
  20 #include <gdk/gdkkeysyms.h>
  21
  22 #include "macros.h"
  23 #include "display/sp-canvas.h"
  24 #include "document.h"
  25 #include "sp-namedview.h"
  26 #include "selection.h"
  27 #include "selection-chemistry.h"
  28 #include "desktop-handles.h"
  29 #include "snap.h"
  30 #include "display/curve.h"
  31 #include "desktop.h"
  32 #include "message-context.h"
  33 #include "pixmaps/cursor-3dbox.xpm"
  34 #include "box3d.h"
  35 #include "box3d-context.h"
  36 #include "sp-metrics.h"
  37 #include <glibmm/i18n.h>
  38 #include "object-edit.h"
  39 #include "xml/repr.h"
  40 #include "xml/node-event-vector.h"
  41 #include "prefs-utils.h"
  42 #include "context-fns.h"
  43 #include "inkscape.h"
  44 #include "desktop-style.h"
  45 #include "transf_mat_3x4.h"
  46 #include "perspective-line.h"
  47 #include "persp3d.h"
  48 #include "box3d-side.h"
  49 #include "document-private.h"
  50 #include "line-geometry.h"
  51
  52 static void sp_box3d_context_class_init(Box3DContextClass *klass);
  53 static void sp_box3d_context_init(Box3DContext *box3d_context);
  54 static void sp_box3d_context_dispose(GObject *object);
  55
  56 static void sp_box3d_context_setup(SPEventContext *ec);
  57
  58 static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  59 static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
  60
  61 static void sp_box3d_drag(Box3DContext &bc, guint state);
  62 static void sp_box3d_finish(Box3DContext *bc);
  63
  64 static SPEventContextClass *parent_class;
  65
  66 GtkType sp_box3d_context_get_type()
  67 {
  68     static GType type = 0;
  69     if (!type) {
  70         GTypeInfo info = {
  71             sizeof(Box3DContextClass),
  72             NULL, NULL,
  73             (GClassInitFunc) sp_box3d_context_class_init,
  74             NULL, NULL,
  75             sizeof(Box3DContext),
  76             4,
  77             (GInstanceInitFunc) sp_box3d_context_init,
  78             NULL,    /* value_table */
  79         };
  80         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "Box3DContext", &info, (GTypeFlags) 0);
  81     }
  82     return type;
  83 }
  84
  85 static void sp_box3d_context_class_init(Box3DContextClass *klass)
  86 {
  87     GObjectClass *object_class = (GObjectClass *) klass;
  88     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
  89
  90     parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass);
  91
  92     object_class->dispose = sp_box3d_context_dispose;
  93
  94     event_context_class->setup = sp_box3d_context_setup;
  95     event_context_class->root_handler  = sp_box3d_context_root_handler;
  96     event_context_class->item_handler  = sp_box3d_context_item_handler;
  97 }
  98
  99 static void sp_box3d_context_init(Box3DContext *box3d_context)
 100 {
 101     SPEventContext *event_context = SP_EVENT_CONTEXT(box3d_context);
 102
 103     event_context->cursor_shape = cursor_3dbox_xpm;
 104     event_context->hot_x = 4;
 105     event_context->hot_y = 4;
 106     event_context->xp = 0;
 107     event_context->yp = 0;
 108     event_context->tolerance = 0;
 109     event_context->within_tolerance = false;
 110     event_context->item_to_select = NULL;
 111
 112     event_context->shape_repr = NULL;
 113     event_context->shape_knot_holder = NULL;
 114
 115     box3d_context->item = NULL;
 116
 117     box3d_context->ctrl_dragged = false;
 118     box3d_context->extruded = false;
 119
 120     box3d_context->_vpdrag = NULL;
 121
 122     new (&box3d_context->sel_changed_connection) sigc::connection();
 123 }
 124
 125 static void sp_box3d_context_dispose(GObject *object)
 126 {
 127     Box3DContext *bc = SP_BOX3D_CONTEXT(object);
 128     SPEventContext *ec = SP_EVENT_CONTEXT(object);
 129
 130     ec->enableGrDrag(false);
 131
 132     delete (bc->_vpdrag);
 133     bc->_vpdrag = NULL;
 134
 135     bc->sel_changed_connection.disconnect();
 136     bc->sel_changed_connection.~connection();
 137
 138     /* fixme: This is necessary because we do not grab */
 139     if (bc->item) {
 140         sp_box3d_finish(bc);
 141     }
 142
 143     if (ec->shape_knot_holder) {
 144         sp_knot_holder_destroy(ec->shape_knot_holder);
 145         ec->shape_knot_holder = NULL;
 146     }
 147
 148     if (ec->shape_repr) { // remove old listener
 149         sp_repr_remove_listener_by_data(ec->shape_repr, ec);
 150         Inkscape::GC::release(ec->shape_repr);
 151         ec->shape_repr = 0;
 152     }
 153
 154     if (bc->_message_context) {
 155         delete bc->_message_context;
 156     }
 157
 158     G_OBJECT_CLASS(parent_class)->dispose(object);
 159 }
 160
 161 static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
 162     NULL, /* child_added */
 163     NULL, /* child_removed */
 164     ec_shape_event_attr_changed,
 165     NULL, /* content_changed */
 166     NULL  /* order_changed */
 167 };
 168
 169 /**
 170 \brief  Callback that processes the "changed" signal on the selection;
 171 destroys old and creates new knotholder
 172 */
 173 static void sp_box3d_context_selection_changed(Inkscape::Selection *selection, gpointer data)
 174 {
 175     Box3DContext *bc = SP_BOX3D_CONTEXT(data);
 176     SPEventContext *ec = SP_EVENT_CONTEXT(bc);
 177
 178     if (ec->shape_knot_holder) { // destroy knotholder
 179         sp_knot_holder_destroy(ec->shape_knot_holder);
 180         ec->shape_knot_holder = NULL;
 181     }
 182
 183     if (ec->shape_repr) { // remove old listener
 184         sp_repr_remove_listener_by_data(ec->shape_repr, ec);
 185         Inkscape::GC::release(ec->shape_repr);
 186         ec->shape_repr = 0;
 187     }
 188
 189     SPDocument *doc = sp_desktop_document(bc->desktop);
 190     doc->persps_sel.clear();
 191     doc->persps_sel = persp3d_currently_selected_persps();
 192
 193     SPItem *item = selection->singleItem();
 194     if (item) {
 195         ec->shape_knot_holder = sp_item_knot_holder(item, ec->desktop);
 196         Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
 197         if (shape_repr) {
 198             ec->shape_repr = shape_repr;
 199             Inkscape::GC::anchor(shape_repr);
 200             sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
 201         }
 202     }
 203
 204     if (doc->persps_sel.size() == 1) {
 205         // selecting a single box changes the current perspective
 206         doc->current_persp3d = *(doc->persps_sel.begin());
 207     }
 208 }
 209
 210 /* create a default perspective in document defs if none is present
 211    (can happen after 'vacuum defs' or when a pre-0.46 file is opened) */
 212 static void sp_box3d_context_check_for_persp_in_defs(SPDocument *document) {
 213     SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
 214
 215     bool has_persp = false;
 216     for (SPObject *child = sp_object_first_child(defs); child != NULL; child = SP_OBJECT_NEXT(child) ) {
 217         if (SP_IS_PERSP3D(child)) {
 218             has_persp = true;
 219             break;
 220         }
 221     }
 222
 223     if (!has_persp) {
 224         document->current_persp3d = persp3d_create_xml_element (document);
 225     }
 226 }
 227
 228 static void sp_box3d_context_setup(SPEventContext *ec)
 229 {
 230     Box3DContext *bc = SP_BOX3D_CONTEXT(ec);
 231
 232     if (((SPEventContextClass *) parent_class)->setup) {
 233         ((SPEventContextClass *) parent_class)->setup(ec);
 234     }
 235
 236     sp_box3d_context_check_for_persp_in_defs(sp_desktop_document (ec->desktop));
 237
 238     SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
 239     if (item) {
 240         ec->shape_knot_holder = sp_item_knot_holder(item, ec->desktop);
 241         Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
 242         if (shape_repr) {
 243             ec->shape_repr = shape_repr;
 244             Inkscape::GC::anchor(shape_repr);
 245             sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
 246         }
 247     }
 248
 249     bc->sel_changed_connection.disconnect();
 250     bc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
 251         sigc::bind(sigc::ptr_fun(&sp_box3d_context_selection_changed), (gpointer)bc)
 252     );
 253
 254     bc->_vpdrag = new Box3D::VPDrag(sp_desktop_document (ec->desktop));
 255
 256     if (prefs_get_int_attribute("tools.shapes", "selcue", 0) != 0) {
 257         ec->enableSelectionCue();
 258     }
 259
 260     if (prefs_get_int_attribute("tools.shapes", "gradientdrag", 0) != 0) {
 261         ec->enableGrDrag();
 262     }
 263
 264     bc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 265 }
 266
 267 static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 268 {
 269     SPDesktop *desktop = event_context->desktop;
 270
 271     gint ret = FALSE;
 272
 273     switch (event->type) {
 274     case GDK_BUTTON_PRESS:
 275         if ( event->button.button == 1 && !event_context->space_panning) {
 276             Inkscape::setup_for_drag_start(desktop, event_context, event);
 277             ret = TRUE;
 278         }
 279         break;
 280         // motion and release are always on root (why?)
 281     default:
 282         break;
 283     }
 284
 285     if (((SPEventContextClass *) parent_class)->item_handler) {
 286         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 287     }
 288
 289     return ret;
 290 }
 291
 292 static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 293 {
 294     static bool dragging;
 295
 296     SPDesktop *desktop = event_context->desktop;
 297     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 298     int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
 299
 300     Box3DContext *bc = SP_BOX3D_CONTEXT(event_context);
 301     g_assert (SP_ACTIVE_DOCUMENT->current_persp3d);
 302     Persp3D *cur_persp = SP_ACTIVE_DOCUMENT->current_persp3d;
 303
 304     event_context->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
 305
 306     gint ret = FALSE;
 307     switch (event->type) {
 308     case GDK_BUTTON_PRESS:
 309         if ( event->button.button == 1  && !event_context->space_panning) {
 310             NR::Point const button_w(event->button.x,
 311                                      event->button.y);
 312
 313             // save drag origin
 314             event_context->xp = (gint) button_w[NR::X];
 315             event_context->yp = (gint) button_w[NR::Y];
 316             event_context->within_tolerance = true;
 317
 318             // remember clicked item, *not* disregarding groups (since a 3D box is a group), honoring Alt
 319             event_context->item_to_select = sp_event_context_find_item (desktop, button_w, event->button.state & GDK_MOD1_MASK, event->button.state & GDK_CONTROL_MASK);
 320
 321             dragging = true;
 322
 323             /*  */
 324             NR::Point const button_dt(desktop->w2d(button_w));
 325             bc->drag_origin = button_dt;
 326             bc->drag_ptB = button_dt;
 327             bc->drag_ptC = button_dt;
 328
 329             /* Projective preimages of clicked point under current perspective */
 330             bc->drag_origin_proj = cur_persp->tmat.preimage (button_dt, 0, Proj::Z);
 331             bc->drag_ptB_proj = bc->drag_origin_proj;
 332             bc->drag_ptC_proj = bc->drag_origin_proj;
 333             bc->drag_ptC_proj.normalize();
 334             bc->drag_ptC_proj[Proj::Z] = 0.25;
 335
 336             /* Snap center */
 337             SnapManager const &m = desktop->namedview->snap_manager;
 338             bc->center = m.freeSnap(Inkscape::Snapper::SNAPPOINT_NODE,
 339                                     button_dt, bc->item).getPoint();
 340
 341             sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
 342                                 ( GDK_KEY_PRESS_MASK |
 343                                   GDK_BUTTON_RELEASE_MASK       |
 344                                   GDK_POINTER_MOTION_MASK       |
 345                                   GDK_BUTTON_PRESS_MASK ),
 346                                 NULL, event->button.time);
 347             ret = TRUE;
 348         }
 349         break;
 350     case GDK_MOTION_NOTIFY:
 351         if ( dragging
 352              && ( event->motion.state & GDK_BUTTON1_MASK )  && !event_context->space_panning)
 353         {
 354             if ( event_context->within_tolerance
 355                  && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 356                  && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 357                 break; // do not drag if we're within tolerance from origin
 358             }
 359             // Once the user has moved farther than tolerance from the original location
 360             // (indicating they intend to draw, not click), then always process the
 361             // motion notify coordinates as given (no snapping back to origin)
 362             event_context->within_tolerance = false;
 363
 364             NR::Point const motion_w(event->motion.x,
 365                                      event->motion.y);
 366             NR::Point motion_dt(desktop->w2d(motion_w));
 367
 368             SnapManager const &m = desktop->namedview->snap_manager;
 369             motion_dt = m.freeSnap(Inkscape::Snapper::SNAPPOINT_NODE, motion_dt, bc->item).getPoint();
 370
 371             bc->ctrl_dragged  = event->motion.state & GDK_CONTROL_MASK;
 372
 373             if (event->motion.state & GDK_SHIFT_MASK && !bc->extruded && bc->item) {
 374                 // once shift is pressed, set bc->extruded
 375                 bc->extruded = true;
 376             }
 377
 378             if (!bc->extruded) {
 379                 bc->drag_ptB = motion_dt;
 380                 bc->drag_ptC = motion_dt;
 381
 382                 bc->drag_ptB_proj = cur_persp->tmat.preimage (motion_dt, 0, Proj::Z);
 383                 bc->drag_ptC_proj = bc->drag_ptB_proj;
 384                 bc->drag_ptC_proj.normalize();
 385                 bc->drag_ptC_proj[Proj::Z] = 0.25;
 386             } else {
 387                 // Without Ctrl, motion of the extruded corner is constrained to the
 388                 // perspective line from drag_ptB to vanishing point Y.
 389                 if (!bc->ctrl_dragged) {
 390                     /* snapping */
 391                     Box3D::PerspectiveLine pline (bc->drag_ptB, Proj::Z, SP_ACTIVE_DOCUMENT->current_persp3d);
 392                     bc->drag_ptC = pline.closest_to (motion_dt);
 393
 394                     bc->drag_ptB_proj.normalize();
 395                     bc->drag_ptC_proj = cur_persp->tmat.preimage (bc->drag_ptC, bc->drag_ptB_proj[Proj::X], Proj::X);
 396                 } else {
 397                     bc->drag_ptC = motion_dt;
 398
 399                     bc->drag_ptB_proj.normalize();
 400                     bc->drag_ptC_proj = cur_persp->tmat.preimage (motion_dt, bc->drag_ptB_proj[Proj::X], Proj::X);
 401                 }
 402                 bc->drag_ptC = m.freeSnap(Inkscape::Snapper::SNAPPOINT_NODE, bc->drag_ptC, bc->item).getPoint();
 403             }
 404
 405             sp_box3d_drag(*bc, event->motion.state);
 406
 407             ret = TRUE;
 408         }
 409         break;
 410     case GDK_BUTTON_RELEASE:
 411         event_context->xp = event_context->yp = 0;
 412         if ( event->button.button == 1  && !event_context->space_panning) {
 413             dragging = false;
 414
 415             if (!event_context->within_tolerance) {
 416                 // we've been dragging, finish the box
 417                 sp_box3d_finish(bc);
 418             } else if (event_context->item_to_select) {
 419                 // no dragging, select clicked item if any
 420                 if (event->button.state & GDK_SHIFT_MASK) {
 421                     selection->toggle(event_context->item_to_select);
 422                 } else {
 423                     selection->set(event_context->item_to_select);
 424                 }
 425             } else {
 426                 // click in an empty space
 427                 selection->clear();
 428             }
 429
 430             event_context->item_to_select = NULL;
 431             ret = TRUE;
 432             sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
 433                                   event->button.time);
 434         }
 435         break;
 436     case GDK_KEY_PRESS:
 437         switch (get_group0_keyval (&event->key)) {
 438         case GDK_Up:
 439         case GDK_Down:
 440         case GDK_KP_Up:
 441         case GDK_KP_Down:
 442             // prevent the zoom field from activation
 443             if (!MOD__CTRL_ONLY)
 444                 ret = TRUE;
 445             break;
 446
 447         case GDK_bracketright:
 448             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::X, -180/snaps, MOD__ALT);
 449             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 450                              _("Change perspective (angle of PLs)"));
 451             ret = true;
 452             break;
 453
 454         case GDK_bracketleft:
 455             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::X, 180/snaps, MOD__ALT);
 456             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 457                              _("Change perspective (angle of PLs)"));
 458             ret = true;
 459             break;
 460
 461         case GDK_parenright:
 462             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Y, -180/snaps, MOD__ALT);
 463             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 464                              _("Change perspective (angle of PLs)"));
 465             ret = true;
 466             break;
 467
 468         case GDK_parenleft:
 469             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Y, 180/snaps, MOD__ALT);
 470             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 471                              _("Change perspective (angle of PLs)"));
 472             ret = true;
 473             break;
 474
 475         case GDK_braceright:
 476             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Z, -180/snaps, MOD__ALT);
 477             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 478                              _("Change perspective (angle of PLs)"));
 479             ret = true;
 480             break;
 481
 482         case GDK_braceleft:
 483             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Z, 180/snaps, MOD__ALT);
 484             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 485                              _("Change perspective (angle of PLs)"));
 486             ret = true;
 487             break;
 488
 489         case GDK_O:
 490             if (MOD__CTRL && MOD__SHIFT) {
 491                 Box3D::create_canvas_point(persp3d_get_VP(inkscape_active_document()->current_persp3d, Proj::W).affine(),
 492                                            6, 0xff00ff00);
 493             }
 494             ret = true;
 495             break;
 496
 497         case GDK_g:
 498         case GDK_G:
 499             if (MOD__SHIFT_ONLY) {
 500                 sp_selection_to_guides();
 501                 ret = true;
 502             }
 503             break;
 504
 505         case GDK_x:
 506         case GDK_X:
 507             if (MOD__ALT_ONLY) {
 508                 desktop->setToolboxFocusTo ("altx-box3d");
 509                 ret = TRUE;
 510             }
 511             if (MOD__SHIFT_ONLY) {
 512                 persp3d_toggle_VPs(persp3d_currently_selected_persps(), Proj::X);
 513                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 514                 ret = true;
 515             }
 516             break;
 517
 518         case GDK_y:
 519         case GDK_Y:
 520             if (MOD__SHIFT_ONLY) {
 521                 persp3d_toggle_VPs(persp3d_currently_selected_persps(), Proj::Y);
 522                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 523                 ret = true;
 524             }
 525             break;
 526
 527         case GDK_z:
 528         case GDK_Z:
 529             if (MOD__SHIFT_ONLY) {
 530                 persp3d_toggle_VPs(persp3d_currently_selected_persps(), Proj::Z);
 531                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 532                 ret = true;
 533             }
 534             break;
 535
 536         case GDK_Escape:
 537             sp_desktop_selection(desktop)->clear();
 538             //TODO: make dragging escapable by Esc
 539             break;
 540
 541         case GDK_space:
 542             if (dragging) {
 543                 sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
 544                                       event->button.time);
 545                 dragging = false;
 546                 if (!event_context->within_tolerance) {
 547                     // we've been dragging, finish the box
 548                     sp_box3d_finish(bc);
 549                 }
 550                 // do not return true, so that space would work switching to selector
 551             }
 552             break;
 553
 554         default:
 555             break;
 556         }
 557         break;
 558     default:
 559         break;
 560     }
 561
 562     if (!ret) {
 563         if (((SPEventContextClass *) parent_class)->root_handler) {
 564             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 565         }
 566     }
 567
 568     return ret;
 569 }
 570
 571 static void sp_box3d_drag(Box3DContext &bc, guint /*state*/)
 572 {
 573     SPDesktop *desktop = SP_EVENT_CONTEXT(&bc)->desktop;
 574
 575     if (!bc.item) {
 576
 577         if (Inkscape::have_viable_layer(desktop, bc._message_context) == false) {
 578             return;
 579         }
 580
 581         /* Create object */
 582         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DOCUMENT(&bc));
 583         Inkscape::XML::Node *repr = xml_doc->createElement("svg:g");
 584         repr->setAttribute("sodipodi:type", "inkscape:box3d");
 585
 586         /* Set style */
 587         sp_desktop_apply_style_tool (desktop, repr, "tools.shapes.3dbox", false);
 588
 589         bc.item = (SPItem *) desktop->currentLayer()->appendChildRepr(repr);
 590         Inkscape::GC::release(repr);
 591         Inkscape::XML::Node *repr_side;
 592         // TODO: Incorporate this in box3d-side.cpp!
 593         for (int i = 0; i < 6; ++i) {
 594             repr_side = xml_doc->createElement("svg:path");
 595             repr_side->setAttribute("sodipodi:type", "inkscape:box3dside");
 596             repr->addChild(repr_side, NULL);
 597
 598             Box3DSide *side = SP_BOX3D_SIDE(inkscape_active_document()->getObjectByRepr (repr_side));
 599
 600             guint desc = Box3D::int_to_face(i);
 601
 602             Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
 603             plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
 604             side->dir1 = Box3D::extract_first_axis_direction(plane);
 605             side->dir2 = Box3D::extract_second_axis_direction(plane);
 606             side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
 607
 608             /* Set style */
 609             box3d_side_apply_style(side);
 610
 611             SP_OBJECT(side)->updateRepr(); // calls box3d_side_write() and updates, e.g., the axes string description
 612         }
 613
 614         box3d_set_z_orders(SP_BOX3D(bc.item));
 615         bc.item->updateRepr();
 616
 617         // TODO: It would be nice to show the VPs during dragging, but since there is no selection
 618         //       at this point (only after finishing the box), we must do this "manually"
 619         /**** bc._vpdrag->updateDraggers(); ****/
 620
 621         sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
 622     }
 623
 624     g_assert(bc.item);
 625
 626     SPBox3D *box = SP_BOX3D(bc.item);
 627
 628     box->orig_corner0 = bc.drag_origin_proj;
 629     box->orig_corner7 = bc.drag_ptC_proj;
 630
 631     box3d_check_for_swapped_coords(box);
 632
 633     /* we need to call this from here (instead of from box3d_position_set(), for example)
 634        because z-order setting must not interfere with display updates during undo/redo */
 635     box3d_set_z_orders (box);
 636
 637     box3d_position_set(box);
 638
 639     // status text
 640     bc._message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>3D Box</b>; with <b>Shift</b> to extrude along the Z axis"));
 641 }
 642
 643 static void sp_box3d_finish(Box3DContext *bc)
 644 {
 645     bc->_message_context->clear();
 646     g_assert (SP_ACTIVE_DOCUMENT->current_persp3d);
 647
 648     if ( bc->item != NULL ) {
 649         SPDesktop * desktop = SP_EVENT_CONTEXT_DESKTOP(bc);
 650
 651         SPBox3D *box = SP_BOX3D(bc->item);
 652
 653         box->orig_corner0 = bc->drag_origin_proj;
 654         box->orig_corner7 = bc->drag_ptC_proj;
 655
 656         box->updateRepr();
 657
 658         box3d_relabel_corners(box);
 659
 660         sp_canvas_end_forced_full_redraws(desktop->canvas);
 661
 662         sp_desktop_selection(desktop)->set(bc->item);
 663         sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 664                          _("Create 3D box"));
 665
 666         bc->item = NULL;
 667     }
 668
 669     bc->ctrl_dragged = false;
 670     bc->extruded = false;
 671 }
 672
 673 /*
 674   Local Variables:
 675   mode:c++
 676   c-file-style:"stroustrup"
 677   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 678   indent-tabs-mode:nil
 679   fill-column:99
 680   End:
 681 */
 682 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :