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 "preferences.h"
  42 #include "context-fns.h"
  43 #include "desktop-style.h"
  44 #include "transf_mat_3x4.h"
  45 #include "perspective-line.h"
  46 #include "persp3d.h"
  47 #include "box3d-side.h"
  48 #include "document-private.h"
  49 #include "line-geometry.h"
  50 #include "shape-editor.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 static void sp_box3d_context_finish(SPEventContext *ec);
  58
  59 static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  60 static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
  61
  62 static void sp_box3d_drag(Box3DContext &bc, guint state);
  63 static void sp_box3d_finish(Box3DContext *bc);
  64
  65 static SPEventContextClass *parent_class;
  66
  67 GtkType sp_box3d_context_get_type()
  68 {
  69     static GType type = 0;
  70     if (!type) {
  71         GTypeInfo info = {
  72             sizeof(Box3DContextClass),
  73             NULL, NULL,
  74             (GClassInitFunc) sp_box3d_context_class_init,
  75             NULL, NULL,
  76             sizeof(Box3DContext),
  77             4,
  78             (GInstanceInitFunc) sp_box3d_context_init,
  79             NULL,    /* value_table */
  80         };
  81         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "Box3DContext", &info, (GTypeFlags) 0);
  82     }
  83     return type;
  84 }
  85
  86 static void sp_box3d_context_class_init(Box3DContextClass *klass)
  87 {
  88     GObjectClass *object_class = (GObjectClass *) klass;
  89     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
  90
  91     parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass);
  92
  93     object_class->dispose = sp_box3d_context_dispose;
  94
  95     event_context_class->setup = sp_box3d_context_setup;
  96     event_context_class->finish = sp_box3d_context_finish;
  97     event_context_class->root_handler  = sp_box3d_context_root_handler;
  98     event_context_class->item_handler  = sp_box3d_context_item_handler;
  99 }
 100
 101 static void sp_box3d_context_init(Box3DContext *box3d_context)
 102 {
 103     SPEventContext *event_context = SP_EVENT_CONTEXT(box3d_context);
 104
 105     event_context->cursor_shape = cursor_3dbox_xpm;
 106     event_context->hot_x = 4;
 107     event_context->hot_y = 4;
 108     event_context->xp = 0;
 109     event_context->yp = 0;
 110     event_context->tolerance = 0;
 111     event_context->within_tolerance = false;
 112     event_context->item_to_select = NULL;
 113
 114     box3d_context->item = NULL;
 115
 116     box3d_context->ctrl_dragged = false;
 117     box3d_context->extruded = false;
 118
 119     box3d_context->_vpdrag = NULL;
 120
 121     new (&box3d_context->sel_changed_connection) sigc::connection();
 122 }
 123
 124 static void sp_box3d_context_finish(SPEventContext *ec)
 125 {
 126     Box3DContext *bc = SP_BOX3D_CONTEXT(ec);
 127     SPDesktop *desktop = ec->desktop;
 128
 129     sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), GDK_CURRENT_TIME);
 130     sp_box3d_finish(bc);
 131     bc->sel_changed_connection.disconnect();
 132 //    sp_repr_remove_listener_by_data(cc->active_shape_repr, cc);
 133
 134     if (((SPEventContextClass *) parent_class)->finish) {
 135         ((SPEventContextClass *) parent_class)->finish(ec);
 136     }
 137 }
 138
 139
 140 static void sp_box3d_context_dispose(GObject *object)
 141 {
 142     Box3DContext *bc = SP_BOX3D_CONTEXT(object);
 143     SPEventContext *ec = SP_EVENT_CONTEXT(object);
 144
 145     ec->enableGrDrag(false);
 146
 147     delete (bc->_vpdrag);
 148     bc->_vpdrag = NULL;
 149
 150     bc->sel_changed_connection.disconnect();
 151     bc->sel_changed_connection.~connection();
 152
 153     delete ec->shape_editor;
 154     ec->shape_editor = NULL;
 155
 156     /* fixme: This is necessary because we do not grab */
 157     if (bc->item) {
 158         sp_box3d_finish(bc);
 159     }
 160
 161     if (bc->_message_context) {
 162         delete bc->_message_context;
 163     }
 164
 165     G_OBJECT_CLASS(parent_class)->dispose(object);
 166 }
 167
 168 /**
 169 \brief  Callback that processes the "changed" signal on the selection;
 170 destroys old and creates new knotholder
 171 */
 172 static void sp_box3d_context_selection_changed(Inkscape::Selection *selection, gpointer data)
 173 {
 174     Box3DContext *bc = SP_BOX3D_CONTEXT(data);
 175     SPEventContext *ec = SP_EVENT_CONTEXT(bc);
 176
 177     ec->shape_editor->unset_item(SH_KNOTHOLDER);
 178     SPItem *item = selection->singleItem();
 179     ec->shape_editor->set_item(item, SH_KNOTHOLDER);
 180
 181     if (selection->perspList().size() == 1) {
 182         // selecting a single box changes the current perspective
 183         ec->desktop->doc()->setCurrentPersp3D(selection->perspList().front());
 184     }
 185 }
 186
 187 /* Create a default perspective in document defs if none is present (which can happen, among other
 188  * circumstances, after 'vacuum defs' or when a pre-0.46 file is opened).
 189  */
 190 static void sp_box3d_context_ensure_persp_in_defs(SPDocument *document) {
 191     SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
 192
 193     bool has_persp = false;
 194     for (SPObject *child = sp_object_first_child(defs); child != NULL; child = SP_OBJECT_NEXT(child) ) {
 195         if (SP_IS_PERSP3D(child)) {
 196             has_persp = true;
 197             break;
 198         }
 199     }
 200
 201     if (!has_persp) {
 202         document->setCurrentPersp3D(persp3d_create_xml_element (document));
 203     }
 204 }
 205
 206 static void sp_box3d_context_setup(SPEventContext *ec)
 207 {
 208     Box3DContext *bc = SP_BOX3D_CONTEXT(ec);
 209
 210     if (((SPEventContextClass *) parent_class)->setup) {
 211         ((SPEventContextClass *) parent_class)->setup(ec);
 212     }
 213
 214     ec->shape_editor = new ShapeEditor(ec->desktop);
 215
 216     SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
 217     if (item) {
 218         ec->shape_editor->set_item(item, SH_KNOTHOLDER);
 219     }
 220
 221     bc->sel_changed_connection.disconnect();
 222     bc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
 223         sigc::bind(sigc::ptr_fun(&sp_box3d_context_selection_changed), (gpointer)bc)
 224     );
 225
 226     bc->_vpdrag = new Box3D::VPDrag(sp_desktop_document (ec->desktop));
 227     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 228
 229     if (prefs->getBool("/tools/shapes/selcue")) {
 230         ec->enableSelectionCue();
 231     }
 232
 233     if (prefs->getBool("/tools/shapes/gradientdrag")) {
 234         ec->enableGrDrag();
 235     }
 236
 237     bc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 238 }
 239
 240 static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 241 {
 242     SPDesktop *desktop = event_context->desktop;
 243
 244     gint ret = FALSE;
 245
 246     switch (event->type) {
 247     case GDK_BUTTON_PRESS:
 248         if ( event->button.button == 1 && !event_context->space_panning) {
 249             Inkscape::setup_for_drag_start(desktop, event_context, event);
 250             ret = TRUE;
 251         }
 252         break;
 253         // motion and release are always on root (why?)
 254     default:
 255         break;
 256     }
 257
 258     if (((SPEventContextClass *) parent_class)->item_handler) {
 259         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 260     }
 261
 262     return ret;
 263 }
 264
 265 static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 266 {
 267     static bool dragging;
 268
 269     SPDesktop *desktop = event_context->desktop;
 270     SPDocument *document = sp_desktop_document (desktop);
 271     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 272     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 273     int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
 274
 275     Box3DContext *bc = SP_BOX3D_CONTEXT(event_context);
 276     Persp3D *cur_persp = document->getCurrentPersp3D();
 277
 278     event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
 279
 280     gint ret = FALSE;
 281     switch (event->type) {
 282     case GDK_BUTTON_PRESS:
 283         if ( event->button.button == 1  && !event_context->space_panning) {
 284             Geom::Point const button_w(event->button.x,
 285                                        event->button.y);
 286             Geom::Point button_dt(desktop->w2d(button_w));
 287
 288             // save drag origin
 289             event_context->xp = (gint) button_w[Geom::X];
 290             event_context->yp = (gint) button_w[Geom::Y];
 291             event_context->within_tolerance = true;
 292
 293             // remember clicked item, *not* disregarding groups (since a 3D box is a group), honoring Alt
 294             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);
 295
 296             dragging = true;
 297
 298             SnapManager &m = desktop->namedview->snap_manager;
 299             m.setup(desktop, true, bc->item);
 300             m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
 301             m.unSetup();
 302             bc->center = from_2geom(button_dt);
 303
 304             bc->drag_origin = from_2geom(button_dt);
 305             bc->drag_ptB = from_2geom(button_dt);
 306             bc->drag_ptC = from_2geom(button_dt);
 307
 308             // This can happen after saving when the last remaining perspective was purged and must be recreated.
 309             if (!cur_persp) {
 310                 sp_box3d_context_ensure_persp_in_defs(document);
 311                 cur_persp = document->getCurrentPersp3D();
 312             }
 313
 314             /* Projective preimages of clicked point under current perspective */
 315             bc->drag_origin_proj = cur_persp->perspective_impl->tmat.preimage (from_2geom(button_dt), 0, Proj::Z);
 316             bc->drag_ptB_proj = bc->drag_origin_proj;
 317             bc->drag_ptC_proj = bc->drag_origin_proj;
 318             bc->drag_ptC_proj.normalize();
 319             bc->drag_ptC_proj[Proj::Z] = 0.25;
 320
 321             sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
 322                                 ( GDK_KEY_PRESS_MASK |
 323                                   GDK_BUTTON_RELEASE_MASK       |
 324                                   GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK       |
 325                                   GDK_BUTTON_PRESS_MASK ),
 326                                 NULL, event->button.time);
 327             ret = TRUE;
 328         }
 329         break;
 330     case GDK_MOTION_NOTIFY:
 331         if ( dragging
 332              && ( event->motion.state & GDK_BUTTON1_MASK )  && !event_context->space_panning)
 333         {
 334             if ( event_context->within_tolerance
 335                  && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 336                  && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 337                 break; // do not drag if we're within tolerance from origin
 338             }
 339             // Once the user has moved farther than tolerance from the original location
 340             // (indicating they intend to draw, not click), then always process the
 341             // motion notify coordinates as given (no snapping back to origin)
 342             event_context->within_tolerance = false;
 343
 344             Geom::Point const motion_w(event->motion.x,
 345                                        event->motion.y);
 346             Geom::Point motion_dt(desktop->w2d(motion_w));
 347
 348             SnapManager &m = desktop->namedview->snap_manager;
 349             m.setup(desktop, true, bc->item);
 350             m.freeSnapReturnByRef(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
 351             bc->ctrl_dragged  = event->motion.state & GDK_CONTROL_MASK;
 352
 353             if (event->motion.state & GDK_SHIFT_MASK && !bc->extruded && bc->item) {
 354                 // once shift is pressed, set bc->extruded
 355                 bc->extruded = true;
 356             }
 357
 358             if (!bc->extruded) {
 359                 bc->drag_ptB = from_2geom(motion_dt);
 360                 bc->drag_ptC = from_2geom(motion_dt);
 361
 362                 bc->drag_ptB_proj = cur_persp->perspective_impl->tmat.preimage (from_2geom(motion_dt), 0, Proj::Z);
 363                 bc->drag_ptC_proj = bc->drag_ptB_proj;
 364                 bc->drag_ptC_proj.normalize();
 365                 bc->drag_ptC_proj[Proj::Z] = 0.25;
 366             } else {
 367                 // Without Ctrl, motion of the extruded corner is constrained to the
 368                 // perspective line from drag_ptB to vanishing point Y.
 369                 if (!bc->ctrl_dragged) {
 370                     /* snapping */
 371                     Box3D::PerspectiveLine pline (bc->drag_ptB, Proj::Z, document->getCurrentPersp3D());
 372                     bc->drag_ptC = pline.closest_to (from_2geom(motion_dt));
 373
 374                     bc->drag_ptB_proj.normalize();
 375                     bc->drag_ptC_proj = cur_persp->perspective_impl->tmat.preimage (bc->drag_ptC, bc->drag_ptB_proj[Proj::X], Proj::X);
 376                 } else {
 377                     bc->drag_ptC = from_2geom(motion_dt);
 378
 379                     bc->drag_ptB_proj.normalize();
 380                     bc->drag_ptC_proj = cur_persp->perspective_impl->tmat.preimage (from_2geom(motion_dt), bc->drag_ptB_proj[Proj::X], Proj::X);
 381                 }
 382                 m.freeSnapReturnByRef(bc->drag_ptC, Inkscape::SNAPSOURCE_NODE_HANDLE);
 383             }
 384             m.unSetup();
 385
 386             sp_box3d_drag(*bc, event->motion.state);
 387
 388             ret = TRUE;
 389         } else if (!sp_event_context_knot_mouseover(bc)) {
 390             SnapManager &m = desktop->namedview->snap_manager;
 391             m.setup(desktop);
 392
 393             Geom::Point const motion_w(event->motion.x, event->motion.y);
 394             Geom::Point motion_dt(desktop->w2d(motion_w));
 395             m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
 396             m.unSetup();
 397         }
 398         break;
 399     case GDK_BUTTON_RELEASE:
 400         event_context->xp = event_context->yp = 0;
 401         if ( event->button.button == 1  && !event_context->space_panning) {
 402             dragging = false;
 403             sp_event_context_discard_delayed_snap_event(event_context);
 404
 405             if (!event_context->within_tolerance) {
 406                 // we've been dragging, finish the box
 407                 sp_box3d_finish(bc);
 408             } else if (event_context->item_to_select) {
 409                 // no dragging, select clicked item if any
 410                 if (event->button.state & GDK_SHIFT_MASK) {
 411                     selection->toggle(event_context->item_to_select);
 412                 } else {
 413                     selection->set(event_context->item_to_select);
 414                 }
 415             } else {
 416                 // click in an empty space
 417                 selection->clear();
 418             }
 419
 420             event_context->item_to_select = NULL;
 421             ret = TRUE;
 422             sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
 423                                   event->button.time);
 424         }
 425         break;
 426     case GDK_KEY_PRESS:
 427         switch (get_group0_keyval (&event->key)) {
 428         case GDK_Up:
 429         case GDK_Down:
 430         case GDK_KP_Up:
 431         case GDK_KP_Down:
 432             // prevent the zoom field from activation
 433             if (!MOD__CTRL_ONLY)
 434                 ret = TRUE;
 435             break;
 436
 437         case GDK_bracketright:
 438             persp3d_rotate_VP (document->getCurrentPersp3D(), Proj::X, -180/snaps, MOD__ALT);
 439             sp_document_done(document, SP_VERB_CONTEXT_3DBOX,
 440                              _("Change perspective (angle of PLs)"));
 441             ret = true;
 442             break;
 443
 444         case GDK_bracketleft:
 445             persp3d_rotate_VP (document->getCurrentPersp3D(), Proj::X, 180/snaps, MOD__ALT);
 446             sp_document_done(document, SP_VERB_CONTEXT_3DBOX,
 447                              _("Change perspective (angle of PLs)"));
 448             ret = true;
 449             break;
 450
 451         case GDK_parenright:
 452             persp3d_rotate_VP (document->getCurrentPersp3D(), Proj::Y, -180/snaps, MOD__ALT);
 453             sp_document_done(document, SP_VERB_CONTEXT_3DBOX,
 454                              _("Change perspective (angle of PLs)"));
 455             ret = true;
 456             break;
 457
 458         case GDK_parenleft:
 459             persp3d_rotate_VP (document->getCurrentPersp3D(), Proj::Y, 180/snaps, MOD__ALT);
 460             sp_document_done(document, SP_VERB_CONTEXT_3DBOX,
 461                              _("Change perspective (angle of PLs)"));
 462             ret = true;
 463             break;
 464
 465         case GDK_braceright:
 466             persp3d_rotate_VP (document->getCurrentPersp3D(), Proj::Z, -180/snaps, MOD__ALT);
 467             sp_document_done(document, SP_VERB_CONTEXT_3DBOX,
 468                              _("Change perspective (angle of PLs)"));
 469             ret = true;
 470             break;
 471
 472         case GDK_braceleft:
 473             persp3d_rotate_VP (document->getCurrentPersp3D(), Proj::Z, 180/snaps, MOD__ALT);
 474             sp_document_done(document, SP_VERB_CONTEXT_3DBOX,
 475                              _("Change perspective (angle of PLs)"));
 476             ret = true;
 477             break;
 478
 479         /* TODO: what is this???
 480         case GDK_O:
 481             if (MOD__CTRL && MOD__SHIFT) {
 482                 Box3D::create_canvas_point(persp3d_get_VP(document()->getCurrentPersp3D(), Proj::W).affine(),
 483                                            6, 0xff00ff00);
 484             }
 485             ret = true;
 486             break;
 487         */
 488
 489         case GDK_g:
 490         case GDK_G:
 491             if (MOD__SHIFT_ONLY) {
 492                 sp_selection_to_guides(desktop);
 493                 ret = true;
 494             }
 495             break;
 496
 497         case GDK_p:
 498         case GDK_P:
 499             if (MOD__SHIFT_ONLY) {
 500                 if (document->getCurrentPersp3D()) {
 501                     persp3d_print_debugging_info (document->getCurrentPersp3D());
 502                 }
 503                 ret = true;
 504             }
 505             break;
 506
 507         case GDK_x:
 508         case GDK_X:
 509             if (MOD__ALT_ONLY) {
 510                 desktop->setToolboxFocusTo ("altx-box3d");
 511                 ret = TRUE;
 512             }
 513             if (MOD__SHIFT_ONLY) {
 514                 persp3d_toggle_VPs(selection->perspList(), Proj::X);
 515                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 516                 ret = true;
 517             }
 518             break;
 519
 520         case GDK_y:
 521         case GDK_Y:
 522             if (MOD__SHIFT_ONLY) {
 523                 persp3d_toggle_VPs(selection->perspList(), Proj::Y);
 524                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 525                 ret = true;
 526             }
 527             break;
 528
 529         case GDK_z:
 530         case GDK_Z:
 531             if (MOD__SHIFT_ONLY) {
 532                 persp3d_toggle_VPs(selection->perspList(), Proj::Z);
 533                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 534                 ret = true;
 535             }
 536             break;
 537
 538         case GDK_Escape:
 539             sp_desktop_selection(desktop)->clear();
 540             //TODO: make dragging escapable by Esc
 541             break;
 542
 543         case GDK_space:
 544             if (dragging) {
 545                 sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
 546                                       event->button.time);
 547                 dragging = false;
 548                 sp_event_context_discard_delayed_snap_event(event_context);
 549                 if (!event_context->within_tolerance) {
 550                     // we've been dragging, finish the box
 551                     sp_box3d_finish(bc);
 552                 }
 553                 // do not return true, so that space would work switching to selector
 554             }
 555             break;
 556
 557         default:
 558             break;
 559         }
 560         break;
 561     default:
 562         break;
 563     }
 564
 565     if (!ret) {
 566         if (((SPEventContextClass *) parent_class)->root_handler) {
 567             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 568         }
 569     }
 570
 571     return ret;
 572 }
 573
 574 static void sp_box3d_drag(Box3DContext &bc, guint /*state*/)
 575 {
 576     SPDesktop *desktop = SP_EVENT_CONTEXT(&bc)->desktop;
 577
 578     if (!bc.item) {
 579
 580         if (Inkscape::have_viable_layer(desktop, bc._message_context) == false) {
 581             return;
 582         }
 583
 584         /* Create object */
 585         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DOCUMENT(&bc));
 586         Inkscape::XML::Node *repr = xml_doc->createElement("svg:g");
 587         repr->setAttribute("sodipodi:type", "inkscape:box3d");
 588
 589         /* Set style */
 590         sp_desktop_apply_style_tool (desktop, repr, "/tools/shapes/3dbox", false);
 591
 592         bc.item = (SPItem *) desktop->currentLayer()->appendChildRepr(repr);
 593         Inkscape::GC::release(repr);
 594         Inkscape::XML::Node *repr_side;
 595         // TODO: Incorporate this in box3d-side.cpp!
 596         for (int i = 0; i < 6; ++i) {
 597             repr_side = xml_doc->createElement("svg:path");
 598             repr_side->setAttribute("sodipodi:type", "inkscape:box3dside");
 599             repr->addChild(repr_side, NULL);
 600
 601             Box3DSide *side = SP_BOX3D_SIDE(inkscape_active_document()->getObjectByRepr (repr_side));
 602
 603             guint desc = Box3D::int_to_face(i);
 604
 605             Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
 606             plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
 607             side->dir1 = Box3D::extract_first_axis_direction(plane);
 608             side->dir2 = Box3D::extract_second_axis_direction(plane);
 609             side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
 610
 611             /* Set style */
 612             box3d_side_apply_style(side);
 613
 614             SP_OBJECT(side)->updateRepr(); // calls box3d_side_write() and updates, e.g., the axes string description
 615         }
 616
 617         box3d_set_z_orders(SP_BOX3D(bc.item));
 618         bc.item->updateRepr();
 619
 620         // TODO: It would be nice to show the VPs during dragging, but since there is no selection
 621         //       at this point (only after finishing the box), we must do this "manually"
 622         /* bc._vpdrag->updateDraggers(); */
 623
 624         sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
 625     }
 626
 627     g_assert(bc.item);
 628
 629     SPBox3D *box = SP_BOX3D(bc.item);
 630
 631     box->orig_corner0 = bc.drag_origin_proj;
 632     box->orig_corner7 = bc.drag_ptC_proj;
 633
 634     box3d_check_for_swapped_coords(box);
 635
 636     /* we need to call this from here (instead of from box3d_position_set(), for example)
 637        because z-order setting must not interfere with display updates during undo/redo */
 638     box3d_set_z_orders (box);
 639
 640     box3d_position_set(box);
 641
 642     // status text
 643     bc._message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>3D Box</b>; with <b>Shift</b> to extrude along the Z axis"));
 644 }
 645
 646 static void sp_box3d_finish(Box3DContext *bc)
 647 {
 648     bc->_message_context->clear();
 649     bc->ctrl_dragged = false;
 650     bc->extruded = false;
 651
 652     if ( bc->item != NULL ) {
 653         SPDesktop * desktop = SP_EVENT_CONTEXT_DESKTOP(bc);
 654         SPDocument *doc = sp_desktop_document(desktop);
 655         if (!doc || !doc->getCurrentPersp3D())
 656             return;
 657
 658         SPBox3D *box = SP_BOX3D(bc->item);
 659
 660         box->orig_corner0 = bc->drag_origin_proj;
 661         box->orig_corner7 = bc->drag_ptC_proj;
 662
 663         box->updateRepr();
 664
 665         box3d_relabel_corners(box);
 666
 667         sp_canvas_end_forced_full_redraws(desktop->canvas);
 668
 669         sp_desktop_selection(desktop)->set(bc->item);
 670         sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 671                          _("Create 3D box"));
 672
 673         bc->item = NULL;
 674     }
 675 }
 676
 677 void sp_box3d_context_update_lines(SPEventContext *ec) {
 678     /*  update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
 679     if (SP_IS_BOX3D_CONTEXT (ec)) {
 680         Box3DContext *bc = SP_BOX3D_CONTEXT (ec);
 681         bc->_vpdrag->updateLines();
 682     }
 683 }
 684
 685 /*
 686   Local Variables:
 687   mode:c++
 688   c-file-style:"stroustrup"
 689   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 690   indent-tabs-mode:nil
 691   fill-column:99
 692   End:
 693 */
 694 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :