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
  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     box3d_context->item = NULL;
 113
 114     box3d_context->ctrl_dragged = false;
 115     box3d_context->extruded = false;
 116
 117     box3d_context->_vpdrag = NULL;
 118
 119     new (&box3d_context->sel_changed_connection) sigc::connection();
 120 }
 121
 122 static void sp_box3d_context_dispose(GObject *object)
 123 {
 124     Box3DContext *bc = SP_BOX3D_CONTEXT(object);
 125     SPEventContext *ec = SP_EVENT_CONTEXT(object);
 126
 127     ec->enableGrDrag(false);
 128
 129     delete (bc->_vpdrag);
 130     bc->_vpdrag = NULL;
 131
 132     bc->sel_changed_connection.disconnect();
 133     bc->sel_changed_connection.~connection();
 134
 135     delete ec->shape_editor;
 136     ec->shape_editor = NULL;
 137
 138     /* fixme: This is necessary because we do not grab */
 139     if (bc->item) {
 140         sp_box3d_finish(bc);
 141     }
 142
 143     if (bc->_message_context) {
 144         delete bc->_message_context;
 145     }
 146
 147     G_OBJECT_CLASS(parent_class)->dispose(object);
 148 }
 149
 150 /**
 151 \brief  Callback that processes the "changed" signal on the selection;
 152 destroys old and creates new knotholder
 153 */
 154 static void sp_box3d_context_selection_changed(Inkscape::Selection *selection, gpointer data)
 155 {
 156     Box3DContext *bc = SP_BOX3D_CONTEXT(data);
 157     SPEventContext *ec = SP_EVENT_CONTEXT(bc);
 158
 159     ec->shape_editor->unset_item(SH_KNOTHOLDER);
 160     SPItem *item = selection->singleItem();
 161     ec->shape_editor->set_item(item, SH_KNOTHOLDER);
 162
 163     if (selection->perspList().size() == 1) {
 164         // selecting a single box changes the current perspective
 165         ec->desktop->doc()->current_persp3d = selection->perspList().front();
 166     }
 167 }
 168
 169 /* create a default perspective in document defs if none is present
 170    (can happen after 'vacuum defs' or when a pre-0.46 file is opened) */
 171 static void sp_box3d_context_check_for_persp_in_defs(SPDocument *document) {
 172     SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
 173
 174     bool has_persp = false;
 175     for (SPObject *child = sp_object_first_child(defs); child != NULL; child = SP_OBJECT_NEXT(child) ) {
 176         if (SP_IS_PERSP3D(child)) {
 177             has_persp = true;
 178             break;
 179         }
 180     }
 181
 182     if (!has_persp) {
 183         document->current_persp3d = persp3d_create_xml_element (document);
 184     }
 185 }
 186
 187 static void sp_box3d_context_setup(SPEventContext *ec)
 188 {
 189     Box3DContext *bc = SP_BOX3D_CONTEXT(ec);
 190
 191     if (((SPEventContextClass *) parent_class)->setup) {
 192         ((SPEventContextClass *) parent_class)->setup(ec);
 193     }
 194
 195     sp_box3d_context_check_for_persp_in_defs(sp_desktop_document (ec->desktop));
 196
 197     ec->shape_editor = new ShapeEditor(ec->desktop);
 198
 199     SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
 200     if (item) {
 201         ec->shape_editor->set_item(item, SH_KNOTHOLDER);
 202     }
 203
 204     bc->sel_changed_connection.disconnect();
 205     bc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
 206         sigc::bind(sigc::ptr_fun(&sp_box3d_context_selection_changed), (gpointer)bc)
 207     );
 208
 209     bc->_vpdrag = new Box3D::VPDrag(sp_desktop_document (ec->desktop));
 210     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 211
 212     if (prefs->getBool("/tools/shapes/selcue")) {
 213         ec->enableSelectionCue();
 214     }
 215
 216     if (prefs->getBool("/tools/shapes/gradientdrag")) {
 217         ec->enableGrDrag();
 218     }
 219
 220     bc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 221 }
 222
 223 static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 224 {
 225     SPDesktop *desktop = event_context->desktop;
 226
 227     gint ret = FALSE;
 228
 229     switch (event->type) {
 230     case GDK_BUTTON_PRESS:
 231         if ( event->button.button == 1 && !event_context->space_panning) {
 232             Inkscape::setup_for_drag_start(desktop, event_context, event);
 233             ret = TRUE;
 234         }
 235         break;
 236         // motion and release are always on root (why?)
 237     default:
 238         break;
 239     }
 240
 241     if (((SPEventContextClass *) parent_class)->item_handler) {
 242         ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
 243     }
 244
 245     return ret;
 246 }
 247
 248 static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event)
 249 {
 250     static bool dragging;
 251
 252     SPDesktop *desktop = event_context->desktop;
 253     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 254     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 255     int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
 256
 257     Box3DContext *bc = SP_BOX3D_CONTEXT(event_context);
 258     g_assert (SP_ACTIVE_DOCUMENT->current_persp3d);
 259     Persp3D *cur_persp = SP_ACTIVE_DOCUMENT->current_persp3d;
 260
 261     event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
 262
 263     gint ret = FALSE;
 264     switch (event->type) {
 265     case GDK_BUTTON_PRESS:
 266         if ( event->button.button == 1  && !event_context->space_panning) {
 267             Geom::Point const button_w(event->button.x,
 268                                        event->button.y);
 269
 270             // save drag origin
 271             event_context->xp = (gint) button_w[Geom::X];
 272             event_context->yp = (gint) button_w[Geom::Y];
 273             event_context->within_tolerance = true;
 274
 275             // remember clicked item, *not* disregarding groups (since a 3D box is a group), honoring Alt
 276             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);
 277
 278             dragging = true;
 279
 280             /*  */
 281             Geom::Point button_dt(desktop->w2d(button_w));
 282             bc->drag_origin = from_2geom(button_dt);
 283             bc->drag_ptB = from_2geom(button_dt);
 284             bc->drag_ptC = from_2geom(button_dt);
 285
 286             /* Projective preimages of clicked point under current perspective */
 287             bc->drag_origin_proj = cur_persp->tmat.preimage (from_2geom(button_dt), 0, Proj::Z);
 288             bc->drag_ptB_proj = bc->drag_origin_proj;
 289             bc->drag_ptC_proj = bc->drag_origin_proj;
 290             bc->drag_ptC_proj.normalize();
 291             bc->drag_ptC_proj[Proj::Z] = 0.25;
 292
 293             /* Snap center */
 294             SnapManager &m = desktop->namedview->snap_manager;
 295             m.setup(desktop, true, bc->item);
 296             m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, button_dt);
 297             bc->center = from_2geom(button_dt);
 298
 299             sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
 300                                 ( GDK_KEY_PRESS_MASK |
 301                                   GDK_BUTTON_RELEASE_MASK       |
 302                                   GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK       |
 303                                   GDK_BUTTON_PRESS_MASK ),
 304                                 NULL, event->button.time);
 305             ret = TRUE;
 306         }
 307         break;
 308     case GDK_MOTION_NOTIFY:
 309         if ( dragging
 310              && ( event->motion.state & GDK_BUTTON1_MASK )  && !event_context->space_panning)
 311         {
 312             if ( event_context->within_tolerance
 313                  && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
 314                  && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
 315                 break; // do not drag if we're within tolerance from origin
 316             }
 317             // Once the user has moved farther than tolerance from the original location
 318             // (indicating they intend to draw, not click), then always process the
 319             // motion notify coordinates as given (no snapping back to origin)
 320             event_context->within_tolerance = false;
 321
 322             Geom::Point const motion_w(event->motion.x,
 323                                        event->motion.y);
 324             Geom::Point motion_dt(desktop->w2d(motion_w));
 325
 326             SnapManager &m = desktop->namedview->snap_manager;
 327             m.setup(desktop, true, bc->item);
 328             m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, motion_dt);
 329
 330             bc->ctrl_dragged  = event->motion.state & GDK_CONTROL_MASK;
 331
 332             if (event->motion.state & GDK_SHIFT_MASK && !bc->extruded && bc->item) {
 333                 // once shift is pressed, set bc->extruded
 334                 bc->extruded = true;
 335             }
 336
 337             if (!bc->extruded) {
 338                 bc->drag_ptB = from_2geom(motion_dt);
 339                 bc->drag_ptC = from_2geom(motion_dt);
 340
 341                 bc->drag_ptB_proj = cur_persp->tmat.preimage (from_2geom(motion_dt), 0, Proj::Z);
 342                 bc->drag_ptC_proj = bc->drag_ptB_proj;
 343                 bc->drag_ptC_proj.normalize();
 344                 bc->drag_ptC_proj[Proj::Z] = 0.25;
 345             } else {
 346                 // Without Ctrl, motion of the extruded corner is constrained to the
 347                 // perspective line from drag_ptB to vanishing point Y.
 348                 if (!bc->ctrl_dragged) {
 349                     /* snapping */
 350                     Box3D::PerspectiveLine pline (bc->drag_ptB, Proj::Z, SP_ACTIVE_DOCUMENT->current_persp3d);
 351                     bc->drag_ptC = pline.closest_to (from_2geom(motion_dt));
 352
 353                     bc->drag_ptB_proj.normalize();
 354                     bc->drag_ptC_proj = cur_persp->tmat.preimage (bc->drag_ptC, bc->drag_ptB_proj[Proj::X], Proj::X);
 355                 } else {
 356                     bc->drag_ptC = from_2geom(motion_dt);
 357
 358                     bc->drag_ptB_proj.normalize();
 359                     bc->drag_ptC_proj = cur_persp->tmat.preimage (from_2geom(motion_dt), bc->drag_ptB_proj[Proj::X], Proj::X);
 360                 }
 361                 Geom::Point pt2g = to_2geom(bc->drag_ptC);
 362                 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, pt2g);
 363                 bc->drag_ptC = from_2geom(pt2g);
 364             }
 365
 366             sp_box3d_drag(*bc, event->motion.state);
 367
 368             ret = TRUE;
 369         }
 370         break;
 371     case GDK_BUTTON_RELEASE:
 372         event_context->xp = event_context->yp = 0;
 373         if ( event->button.button == 1  && !event_context->space_panning) {
 374             dragging = false;
 375
 376             if (!event_context->within_tolerance) {
 377                 // we've been dragging, finish the box
 378                 sp_box3d_finish(bc);
 379             } else if (event_context->item_to_select) {
 380                 // no dragging, select clicked item if any
 381                 if (event->button.state & GDK_SHIFT_MASK) {
 382                     selection->toggle(event_context->item_to_select);
 383                 } else {
 384                     selection->set(event_context->item_to_select);
 385                 }
 386             } else {
 387                 // click in an empty space
 388                 selection->clear();
 389             }
 390
 391             event_context->item_to_select = NULL;
 392             ret = TRUE;
 393             sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
 394                                   event->button.time);
 395         }
 396         break;
 397     case GDK_KEY_PRESS:
 398         switch (get_group0_keyval (&event->key)) {
 399         case GDK_Up:
 400         case GDK_Down:
 401         case GDK_KP_Up:
 402         case GDK_KP_Down:
 403             // prevent the zoom field from activation
 404             if (!MOD__CTRL_ONLY)
 405                 ret = TRUE;
 406             break;
 407
 408         case GDK_bracketright:
 409             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::X, -180/snaps, MOD__ALT);
 410             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 411                              _("Change perspective (angle of PLs)"));
 412             ret = true;
 413             break;
 414
 415         case GDK_bracketleft:
 416             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::X, 180/snaps, MOD__ALT);
 417             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 418                              _("Change perspective (angle of PLs)"));
 419             ret = true;
 420             break;
 421
 422         case GDK_parenright:
 423             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Y, -180/snaps, MOD__ALT);
 424             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 425                              _("Change perspective (angle of PLs)"));
 426             ret = true;
 427             break;
 428
 429         case GDK_parenleft:
 430             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Y, 180/snaps, MOD__ALT);
 431             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 432                              _("Change perspective (angle of PLs)"));
 433             ret = true;
 434             break;
 435
 436         case GDK_braceright:
 437             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Z, -180/snaps, MOD__ALT);
 438             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 439                              _("Change perspective (angle of PLs)"));
 440             ret = true;
 441             break;
 442
 443         case GDK_braceleft:
 444             persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Z, 180/snaps, MOD__ALT);
 445             sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 446                              _("Change perspective (angle of PLs)"));
 447             ret = true;
 448             break;
 449
 450         case GDK_O:
 451             if (MOD__CTRL && MOD__SHIFT) {
 452                 Box3D::create_canvas_point(persp3d_get_VP(inkscape_active_document()->current_persp3d, Proj::W).affine(),
 453                                            6, 0xff00ff00);
 454             }
 455             ret = true;
 456             break;
 457
 458         case GDK_g:
 459         case GDK_G:
 460             if (MOD__SHIFT_ONLY) {
 461                 sp_selection_to_guides(desktop);
 462                 ret = true;
 463             }
 464             break;
 465
 466         case GDK_x:
 467         case GDK_X:
 468             if (MOD__ALT_ONLY) {
 469                 desktop->setToolboxFocusTo ("altx-box3d");
 470                 ret = TRUE;
 471             }
 472             if (MOD__SHIFT_ONLY) {
 473                 persp3d_toggle_VPs(selection->perspList(), Proj::X);
 474                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 475                 ret = true;
 476             }
 477             break;
 478
 479         case GDK_y:
 480         case GDK_Y:
 481             if (MOD__SHIFT_ONLY) {
 482                 persp3d_toggle_VPs(selection->perspList(), Proj::Y);
 483                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 484                 ret = true;
 485             }
 486             break;
 487
 488         case GDK_z:
 489         case GDK_Z:
 490             if (MOD__SHIFT_ONLY) {
 491                 persp3d_toggle_VPs(selection->perspList(), Proj::Z);
 492                 bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
 493                 ret = true;
 494             }
 495             break;
 496
 497         case GDK_Escape:
 498             sp_desktop_selection(desktop)->clear();
 499             //TODO: make dragging escapable by Esc
 500             break;
 501
 502         case GDK_space:
 503             if (dragging) {
 504                 sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
 505                                       event->button.time);
 506                 dragging = false;
 507                 if (!event_context->within_tolerance) {
 508                     // we've been dragging, finish the box
 509                     sp_box3d_finish(bc);
 510                 }
 511                 // do not return true, so that space would work switching to selector
 512             }
 513             break;
 514
 515         default:
 516             break;
 517         }
 518         break;
 519     default:
 520         break;
 521     }
 522
 523     if (!ret) {
 524         if (((SPEventContextClass *) parent_class)->root_handler) {
 525             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
 526         }
 527     }
 528
 529     return ret;
 530 }
 531
 532 static void sp_box3d_drag(Box3DContext &bc, guint /*state*/)
 533 {
 534     SPDesktop *desktop = SP_EVENT_CONTEXT(&bc)->desktop;
 535
 536     if (!bc.item) {
 537
 538         if (Inkscape::have_viable_layer(desktop, bc._message_context) == false) {
 539             return;
 540         }
 541
 542         /* Create object */
 543         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DOCUMENT(&bc));
 544         Inkscape::XML::Node *repr = xml_doc->createElement("svg:g");
 545         repr->setAttribute("sodipodi:type", "inkscape:box3d");
 546
 547         /* Set style */
 548         sp_desktop_apply_style_tool (desktop, repr, "/tools/shapes/3dbox", false);
 549
 550         bc.item = (SPItem *) desktop->currentLayer()->appendChildRepr(repr);
 551         Inkscape::GC::release(repr);
 552         Inkscape::XML::Node *repr_side;
 553         // TODO: Incorporate this in box3d-side.cpp!
 554         for (int i = 0; i < 6; ++i) {
 555             repr_side = xml_doc->createElement("svg:path");
 556             repr_side->setAttribute("sodipodi:type", "inkscape:box3dside");
 557             repr->addChild(repr_side, NULL);
 558
 559             Box3DSide *side = SP_BOX3D_SIDE(inkscape_active_document()->getObjectByRepr (repr_side));
 560
 561             guint desc = Box3D::int_to_face(i);
 562
 563             Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
 564             plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
 565             side->dir1 = Box3D::extract_first_axis_direction(plane);
 566             side->dir2 = Box3D::extract_second_axis_direction(plane);
 567             side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
 568
 569             /* Set style */
 570             box3d_side_apply_style(side);
 571
 572             SP_OBJECT(side)->updateRepr(); // calls box3d_side_write() and updates, e.g., the axes string description
 573         }
 574
 575         box3d_set_z_orders(SP_BOX3D(bc.item));
 576         bc.item->updateRepr();
 577
 578         // TODO: It would be nice to show the VPs during dragging, but since there is no selection
 579         //       at this point (only after finishing the box), we must do this "manually"
 580         /**** bc._vpdrag->updateDraggers(); ****/
 581
 582         sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
 583     }
 584
 585     g_assert(bc.item);
 586
 587     SPBox3D *box = SP_BOX3D(bc.item);
 588
 589     box->orig_corner0 = bc.drag_origin_proj;
 590     box->orig_corner7 = bc.drag_ptC_proj;
 591
 592     box3d_check_for_swapped_coords(box);
 593
 594     /* we need to call this from here (instead of from box3d_position_set(), for example)
 595        because z-order setting must not interfere with display updates during undo/redo */
 596     box3d_set_z_orders (box);
 597
 598     box3d_position_set(box);
 599
 600     // status text
 601     bc._message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>3D Box</b>; with <b>Shift</b> to extrude along the Z axis"));
 602 }
 603
 604 static void sp_box3d_finish(Box3DContext *bc)
 605 {
 606     bc->_message_context->clear();
 607     g_assert (SP_ACTIVE_DOCUMENT->current_persp3d);
 608
 609     if ( bc->item != NULL ) {
 610         SPDesktop * desktop = SP_EVENT_CONTEXT_DESKTOP(bc);
 611
 612         SPBox3D *box = SP_BOX3D(bc->item);
 613
 614         box->orig_corner0 = bc->drag_origin_proj;
 615         box->orig_corner7 = bc->drag_ptC_proj;
 616
 617         box->updateRepr();
 618
 619         box3d_relabel_corners(box);
 620
 621         sp_canvas_end_forced_full_redraws(desktop->canvas);
 622
 623         sp_desktop_selection(desktop)->set(bc->item);
 624         sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX,
 625                          _("Create 3D box"));
 626
 627         bc->item = NULL;
 628     }
 629
 630     bc->ctrl_dragged = false;
 631     bc->extruded = false;
 632 }
 633
 634 void sp_box3d_context_update_lines(SPEventContext *ec) {
 635     /*  update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
 636     if (SP_IS_BOX3D_CONTEXT (ec)) {
 637         Box3DContext *bc = SP_BOX3D_CONTEXT (ec);
 638         bc->_vpdrag->updateLines();
 639     }
 640 }
 641
 642 /*
 643   Local Variables:
 644   mode:c++
 645   c-file-style:"stroustrup"
 646   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 647   indent-tabs-mode:nil
 648   fill-column:99
 649   End:
 650 */
 651 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :