src/pencil-context.cpp

   1 /** \file
   2  * Pencil event context implementation.
   3  */
   4
   5 /*
   6  * Authors:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *   bulia byak <buliabyak@users.sf.net>
   9  *
  10  * Copyright (C) 2000 Lauris Kaplinski
  11  * Copyright (C) 2000-2001 Ximian, Inc.
  12  * Copyright (C) 2002 Lauris Kaplinski
  13  * Copyright (C) 2004 Monash University
  14  *
  15  * Released under GNU GPL, read the file 'COPYING' for more information
  16  */
  17
  18 #include <gdk/gdkkeysyms.h>
  19
  20 #include "pencil-context.h"
  21 #include "desktop.h"
  22 #include "desktop-handles.h"
  23 #include "selection.h"
  24 #include "draw-anchor.h"
  25 #include "message-stack.h"
  26 #include "message-context.h"
  27 #include "modifier-fns.h"
  28 #include "sp-path.h"
  29 #include "prefs-utils.h"
  30 #include "snap.h"
  31 #include "pixmaps/cursor-pencil.xpm"
  32 #include "display/bezier-utils.h"
  33 #include "display/canvas-bpath.h"
  34 #include <glibmm/i18n.h>
  35 #include "libnr/in-svg-plane.h"
  36 #include "libnr/n-art-bpath.h"
  37 #include "context-fns.h"
  38 #include "sp-namedview.h"
  39
  40 static void sp_pencil_context_class_init(SPPencilContextClass *klass);
  41 static void sp_pencil_context_init(SPPencilContext *pc);
  42 static void sp_pencil_context_setup(SPEventContext *ec);
  43 static void sp_pencil_context_dispose(GObject *object);
  44
  45 static gint sp_pencil_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  46 static gint pencil_handle_button_press(SPPencilContext *const pc, GdkEventButton const &bevent);
  47 static gint pencil_handle_motion_notify(SPPencilContext *const pc, GdkEventMotion const &mevent);
  48 static gint pencil_handle_button_release(SPPencilContext *const pc, GdkEventButton const &revent);
  49 static gint pencil_handle_key_press(SPPencilContext *const pc, guint const keyval, guint const state);
  50
  51 static void spdc_set_startpoint(SPPencilContext *pc, NR::Point const p);
  52 static void spdc_set_endpoint(SPPencilContext *pc, NR::Point const p);
  53 static void spdc_finish_endpoint(SPPencilContext *pc);
  54 static void spdc_add_freehand_point(SPPencilContext *pc, NR::Point p, guint state);
  55 static void fit_and_split(SPPencilContext *pc);
  56
  57
  58 static SPDrawContextClass *pencil_parent_class;
  59
  60 /**
  61  * Register SPPencilContext class with Gdk and return its type number.
  62  */
  63 GType
  64 sp_pencil_context_get_type()
  65 {
  66     static GType type = 0;
  67     if (!type) {
  68         GTypeInfo info = {
  69             sizeof(SPPencilContextClass),
  70             NULL, NULL,
  71             (GClassInitFunc) sp_pencil_context_class_init,
  72             NULL, NULL,
  73             sizeof(SPPencilContext),
  74             4,
  75             (GInstanceInitFunc) sp_pencil_context_init,
  76             NULL,   /* value_table */
  77         };
  78         type = g_type_register_static(SP_TYPE_DRAW_CONTEXT, "SPPencilContext", &info, (GTypeFlags)0);
  79     }
  80     return type;
  81 }
  82
  83 /**
  84  * Initialize SPPencilContext vtable.
  85  */
  86 static void
  87 sp_pencil_context_class_init(SPPencilContextClass *klass)
  88 {
  89     GObjectClass *object_class;
  90     SPEventContextClass *event_context_class;
  91
  92     object_class = (GObjectClass *) klass;
  93     event_context_class = (SPEventContextClass *) klass;
  94
  95     pencil_parent_class = (SPDrawContextClass*)g_type_class_peek_parent(klass);
  96
  97     object_class->dispose = sp_pencil_context_dispose;
  98
  99     event_context_class->setup = sp_pencil_context_setup;
 100     event_context_class->root_handler = sp_pencil_context_root_handler;
 101 }
 102
 103 /**
 104  * Callback to initialize SPPencilContext object.
 105  */
 106 static void
 107 sp_pencil_context_init(SPPencilContext *pc)
 108 {
 109     SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
 110
 111     event_context->cursor_shape = cursor_pencil_xpm;
 112     event_context->hot_x = 4;
 113     event_context->hot_y = 4;
 114
 115     pc->npoints = 0;
 116     pc->state = SP_PENCIL_CONTEXT_IDLE;
 117     pc->req_tangent = NR::Point(0, 0);
 118 }
 119
 120 /**
 121  * Callback to setup SPPencilContext object.
 122  */
 123 static void
 124 sp_pencil_context_setup(SPEventContext *ec)
 125 {
 126     if (prefs_get_int_attribute("tools.freehand.pencil", "selcue", 0) != 0) {
 127         ec->enableSelectionCue();
 128     }
 129
 130     if (((SPEventContextClass *) pencil_parent_class)->setup) {
 131         ((SPEventContextClass *) pencil_parent_class)->setup(ec);
 132     }
 133
 134     SPPencilContext *const pc = SP_PENCIL_CONTEXT(ec);
 135     pc->is_drawing = false;
 136
 137     pc->anchor_statusbar = false;
 138 }
 139
 140 static void
 141 sp_pencil_context_dispose(GObject *object)
 142 {
 143     G_OBJECT_CLASS(pencil_parent_class)->dispose(object);
 144 }
 145
 146 /** Snaps new node relative to the previous node. */
 147 static void
 148 spdc_endpoint_snap(SPPencilContext const *pc, NR::Point &p, guint const state)
 149 {
 150     spdc_endpoint_snap_rotation(pc, p, pc->p[0], state);
 151     spdc_endpoint_snap_free(pc, p, state);
 152 }
 153
 154 /**
 155  * Callback for handling all pencil context events.
 156  */
 157 gint
 158 sp_pencil_context_root_handler(SPEventContext *const ec, GdkEvent *event)
 159 {
 160     SPPencilContext *const pc = SP_PENCIL_CONTEXT(ec);
 161
 162     gint ret = FALSE;
 163
 164     switch (event->type) {
 165         case GDK_BUTTON_PRESS:
 166             ret = pencil_handle_button_press(pc, event->button);
 167             break;
 168
 169         case GDK_MOTION_NOTIFY:
 170             ret = pencil_handle_motion_notify(pc, event->motion);
 171             break;
 172
 173         case GDK_BUTTON_RELEASE:
 174             ret = pencil_handle_button_release(pc, event->button);
 175             break;
 176
 177         case GDK_KEY_PRESS:
 178             ret = pencil_handle_key_press(pc, get_group0_keyval (&event->key), event->key.state);
 179             break;
 180
 181         default:
 182             break;
 183     }
 184
 185     if (!ret) {
 186         gint (*const parent_root_handler)(SPEventContext *, GdkEvent *)
 187             = ((SPEventContextClass *) pencil_parent_class)->root_handler;
 188         if (parent_root_handler) {
 189             ret = parent_root_handler(ec, event);
 190         }
 191     }
 192
 193     return ret;
 194 }
 195
 196 static gint
 197 pencil_handle_button_press(SPPencilContext *const pc, GdkEventButton const &bevent)
 198 {
 199     gint ret = FALSE;
 200     SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
 201     if ( bevent.button == 1  && !event_context->space_panning) {
 202
 203         SPDrawContext *dc = SP_DRAW_CONTEXT (pc);
 204         SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(dc);
 205         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 206
 207         if (Inkscape::have_viable_layer(desktop, dc->_message_context) == false) {
 208             return TRUE;
 209         }
 210
 211         NR::Point const button_w(bevent.x, bevent.y);
 212
 213         /* Find desktop coordinates */
 214         NR::Point p = pc->desktop->w2d(button_w);
 215
 216         /* Test whether we hit any anchor. */
 217         SPDrawAnchor *anchor = spdc_test_inside(pc, button_w);
 218
 219         switch (pc->state) {
 220             case SP_PENCIL_CONTEXT_ADDLINE:
 221                 /* Current segment will be finished with release */
 222                 ret = TRUE;
 223                 break;
 224             default:
 225                 /* Set first point of sequence */
 226                 if (anchor) {
 227                     p = anchor->dp;
 228                     desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Continuing selected path"));
 229                 } else {
 230
 231                     if (!(bevent.state & GDK_SHIFT_MASK)) {
 232
 233                         // This is the first click of a new curve; deselect item so that
 234                         // this curve is not combined with it (unless it is drawn from its
 235                         // anchor, which is handled by the sibling branch above)
 236                         selection->clear();
 237                         desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
 238                         SnapManager const &m = desktop->namedview->snap_manager;
 239                         p = m.freeSnap(Inkscape::Snapper::SNAPPOINT_BBOX | Inkscape::Snapper::SNAPPOINT_NODE, p, NULL).getPoint();
 240                     } else if (selection->singleItem() && SP_IS_PATH(selection->singleItem())) {
 241                         desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Appending to selected path"));
 242                     }
 243                 }
 244                 pc->sa = anchor;
 245                 spdc_set_startpoint(pc, p);
 246                 ret = TRUE;
 247                 break;
 248         }
 249
 250         pc->is_drawing = true;
 251     }
 252     return ret;
 253 }
 254
 255 static gint
 256 pencil_handle_motion_notify(SPPencilContext *const pc, GdkEventMotion const &mevent)
 257 {
 258     gint ret = FALSE;
 259     SPDesktop *const dt = pc->desktop;
 260
 261     SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
 262     if (event_context->space_panning || mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
 263         // allow scrolling
 264         return FALSE;
 265     }
 266
 267     if ( ( mevent.state & GDK_BUTTON1_MASK ) && !pc->grab && pc->is_drawing) {
 268         /* Grab mouse, so release will not pass unnoticed */
 269         pc->grab = SP_CANVAS_ITEM(dt->acetate);
 270         sp_canvas_item_grab(pc->grab, ( GDK_KEY_PRESS_MASK | GDK_BUTTON_PRESS_MASK   |
 271                                         GDK_BUTTON_RELEASE_MASK |
 272                                         GDK_POINTER_MOTION_MASK  ),
 273                             NULL, mevent.time);
 274     }
 275
 276     /* Find desktop coordinates */
 277     NR::Point p = dt->w2d(NR::Point(mevent.x, mevent.y));
 278
 279     /* Test whether we hit any anchor. */
 280     SPDrawAnchor *anchor = spdc_test_inside(pc, NR::Point(mevent.x, mevent.y));
 281
 282     switch (pc->state) {
 283         case SP_PENCIL_CONTEXT_ADDLINE:
 284             /* Set red endpoint */
 285             if (anchor) {
 286                 p = anchor->dp;
 287             } else {
 288                 spdc_endpoint_snap(pc, p, mevent.state);
 289             }
 290             spdc_set_endpoint(pc, p);
 291             ret = TRUE;
 292             break;
 293         default:
 294             /* We may be idle or already freehand */
 295             if ( mevent.state & GDK_BUTTON1_MASK && pc->is_drawing ) {
 296                 pc->state = SP_PENCIL_CONTEXT_FREEHAND;
 297                 if ( !pc->sa && !pc->green_anchor ) {
 298                     /* Create green anchor */
 299                     pc->green_anchor = sp_draw_anchor_new(pc, pc->green_curve, TRUE, pc->p[0]);
 300                 }
 301                 /** \todo
 302                  * fixme: I am not sure whether we want to snap to anchors
 303                  * in middle of freehand (Lauris)
 304                  */
 305                 if (anchor) {
 306                     p = anchor->dp;
 307                 } else if ((mevent.state & GDK_SHIFT_MASK) == 0) {
 308                     SnapManager const &m = dt->namedview->snap_manager;
 309                     p = m.freeSnap(Inkscape::Snapper::SNAPPOINT_BBOX | Inkscape::Snapper::SNAPPOINT_NODE, p, NULL).getPoint();
 310                 }
 311                 if ( pc->npoints != 0 ) { // buttonpress may have happened before we entered draw context!
 312                     spdc_add_freehand_point(pc, p, mevent.state);
 313                     ret = TRUE;
 314                 }
 315
 316                 if (anchor && !pc->anchor_statusbar) {
 317                     pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Release</b> here to close and finish the path."));
 318                     pc->anchor_statusbar = true;
 319                 } else if (!anchor && pc->anchor_statusbar) {
 320                     pc->_message_context->clear();
 321                     pc->anchor_statusbar = false;
 322                 } else if (!anchor) {
 323                     pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("Drawing a freehand path"));
 324                 }
 325
 326             } else {
 327                 if (anchor && !pc->anchor_statusbar) {
 328                     pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag</b> to continue the path from this point."));
 329                     pc->anchor_statusbar = true;
 330                 } else if (!anchor && pc->anchor_statusbar) {
 331                     pc->_message_context->clear();
 332                     pc->anchor_statusbar = false;
 333                 }
 334             }
 335             break;
 336     }
 337     return ret;
 338 }
 339
 340 static gint
 341 pencil_handle_button_release(SPPencilContext *const pc, GdkEventButton const &revent)
 342 {
 343     gint ret = FALSE;
 344
 345     SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
 346     if ( revent.button == 1 && pc->is_drawing && !event_context->space_panning) {
 347         SPDesktop *const dt = pc->desktop;
 348
 349         pc->is_drawing = false;
 350
 351         /* Find desktop coordinates */
 352         NR::Point p = dt->w2d(NR::Point(revent.x, revent.y));
 353
 354         /* Test whether we hit any anchor. */
 355         SPDrawAnchor *anchor = spdc_test_inside(pc, NR::Point(revent.x,
 356                                                               revent.y));
 357
 358         switch (pc->state) {
 359             case SP_PENCIL_CONTEXT_IDLE:
 360                 /* Releasing button in idle mode means single click */
 361                 /* We have already set up start point/anchor in button_press */
 362                 pc->state = SP_PENCIL_CONTEXT_ADDLINE;
 363                 ret = TRUE;
 364                 break;
 365             case SP_PENCIL_CONTEXT_ADDLINE:
 366                 /* Finish segment now */
 367                 if (anchor) {
 368                     p = anchor->dp;
 369                 } else {
 370                     spdc_endpoint_snap(pc, p, revent.state);
 371                 }
 372                 pc->ea = anchor;
 373                 spdc_set_endpoint(pc, p);
 374                 spdc_finish_endpoint(pc);
 375                 pc->state = SP_PENCIL_CONTEXT_IDLE;
 376                 ret = TRUE;
 377                 break;
 378             case SP_PENCIL_CONTEXT_FREEHAND:
 379                 /* Finish segment now */
 380                 /// \todo fixme: Clean up what follows (Lauris)
 381                 if (anchor) {
 382                     p = anchor->dp;
 383                 }
 384                 pc->ea = anchor;
 385                 /* Write curves to object */
 386
 387                 dt->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing freehand"));
 388
 389                 spdc_concat_colors_and_flush(pc, FALSE);
 390                 pc->sa = NULL;
 391                 pc->ea = NULL;
 392                 if (pc->green_anchor) {
 393                     pc->green_anchor = sp_draw_anchor_destroy(pc->green_anchor);
 394                 }
 395                 pc->state = SP_PENCIL_CONTEXT_IDLE;
 396                 ret = TRUE;
 397                 break;
 398             default:
 399                 break;
 400         }
 401
 402         if (pc->grab) {
 403             /* Release grab now */
 404             sp_canvas_item_ungrab(pc->grab, revent.time);
 405             pc->grab = NULL;
 406         }
 407
 408         ret = TRUE;
 409     }
 410     return ret;
 411 }
 412
 413 static void
 414 pencil_cancel (SPPencilContext *const pc)
 415 {
 416     if (pc->grab) {
 417         /* Release grab now */
 418         sp_canvas_item_ungrab(pc->grab, 0);
 419         pc->grab = NULL;
 420     }
 421
 422     pc->is_drawing = false;
 423
 424     pc->state = SP_PENCIL_CONTEXT_IDLE;
 425
 426     sp_curve_reset(pc->red_curve);
 427     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), NULL);
 428     while (pc->green_bpaths) {
 429         gtk_object_destroy(GTK_OBJECT(pc->green_bpaths->data));
 430         pc->green_bpaths = g_slist_remove(pc->green_bpaths, pc->green_bpaths->data);
 431     }
 432     sp_curve_reset(pc->green_curve);
 433     if (pc->green_anchor) {
 434         pc->green_anchor = sp_draw_anchor_destroy(pc->green_anchor);
 435     }
 436
 437     pc->_message_context->clear();
 438     pc->_message_context->flash(Inkscape::NORMAL_MESSAGE, _("Drawing cancelled"));
 439
 440     sp_canvas_end_forced_full_redraws(pc->desktop->canvas);
 441 }
 442
 443
 444 static gint
 445 pencil_handle_key_press(SPPencilContext *const pc, guint const keyval, guint const state)
 446 {
 447     gint ret = FALSE;
 448     switch (keyval) {
 449         case GDK_Up:
 450         case GDK_Down:
 451         case GDK_KP_Up:
 452         case GDK_KP_Down:
 453             // Prevent the zoom field from activation.
 454             if (!mod_ctrl_only(state)) {
 455                 ret = TRUE;
 456             }
 457             break;
 458         case GDK_Escape:
 459             if (pc->npoints != 0) {
 460                 // if drawing, cancel, otherwise pass it up for deselecting
 461                 if (pc->is_drawing) {
 462                     pencil_cancel (pc);
 463                     ret = TRUE;
 464                 }
 465             }
 466             break;
 467         case GDK_z:
 468         case GDK_Z:
 469             if (mod_ctrl_only(state) && pc->npoints != 0) {
 470                 // if drawing, cancel, otherwise pass it up for undo
 471                 if (pc->is_drawing) {
 472                     pencil_cancel (pc);
 473                     ret = TRUE;
 474                 }
 475             }
 476             break;
 477         default:
 478             break;
 479     }
 480     return ret;
 481 }
 482
 483 /**
 484  * Reset points and set new starting point.
 485  */
 486 static void
 487 spdc_set_startpoint(SPPencilContext *const pc, NR::Point const p)
 488 {
 489     pc->npoints = 0;
 490     pc->red_curve_is_valid = false;
 491     if (in_svg_plane(p)) {
 492         pc->p[pc->npoints++] = p;
 493     }
 494 }
 495
 496 /**
 497  * Change moving endpoint position.
 498  * <ul>
 499  * <li>Ctrl constrains to moving to H/V direction, snapping in given direction.
 500  * <li>Otherwise we snap freely to whatever attractors are available.
 501  * </ul>
 502  *
 503  * Number of points is (re)set to 2 always, 2nd point is modified.
 504  * We change RED curve.
 505  */
 506 static void
 507 spdc_set_endpoint(SPPencilContext *const pc, NR::Point const p)
 508 {
 509     if (pc->npoints == 0) {
 510         return;
 511         /* May occur if first point wasn't in SVG plane (e.g. weird w2d transform, perhaps from bad
 512          * zoom setting).
 513          */
 514     }
 515     g_return_if_fail( pc->npoints > 0 );
 516
 517     sp_curve_reset(pc->red_curve);
 518     if ( ( p == pc->p[0] )
 519          || !in_svg_plane(p) )
 520     {
 521         pc->npoints = 1;
 522     } else {
 523         pc->p[1] = p;
 524         pc->npoints = 2;
 525
 526         sp_curve_moveto(pc->red_curve, pc->p[0]);
 527         sp_curve_lineto(pc->red_curve, pc->p[1]);
 528         pc->red_curve_is_valid = true;
 529
 530         sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
 531     }
 532 }
 533
 534 /**
 535  * Finalize addline.
 536  *
 537  * \todo
 538  * fixme: I'd like remove red reset from concat colors (lauris).
 539  * Still not sure, how it will make most sense.
 540  */
 541 static void
 542 spdc_finish_endpoint(SPPencilContext *const pc)
 543 {
 544     if ( ( SP_CURVE_LENGTH(pc->red_curve) != 2 )
 545          || ( SP_CURVE_SEGMENT(pc->red_curve, 0)->c(3) ==
 546               SP_CURVE_SEGMENT(pc->red_curve, 1)->c(3)   ) )
 547     {
 548         sp_curve_reset(pc->red_curve);
 549         sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), NULL);
 550     } else {
 551         /* Write curves to object. */
 552         spdc_concat_colors_and_flush(pc, FALSE);
 553         pc->sa = NULL;
 554         pc->ea = NULL;
 555     }
 556 }
 557
 558 static void
 559 spdc_add_freehand_point(SPPencilContext *pc, NR::Point p, guint state)
 560 {
 561     g_assert( pc->npoints > 0 );
 562     g_return_if_fail(unsigned(pc->npoints) < G_N_ELEMENTS(pc->p));
 563
 564     if ( ( p != pc->p[ pc->npoints - 1 ] )
 565          && in_svg_plane(p) )
 566     {
 567         pc->p[pc->npoints++] = p;
 568         fit_and_split(pc);
 569     }
 570 }
 571
 572 static inline double
 573 square(double const x)
 574 {
 575     return x * x;
 576 }
 577
 578 static void
 579 fit_and_split(SPPencilContext *pc)
 580 {
 581     g_assert( pc->npoints > 1 );
 582
 583     double const tolerance_sq = square( NR::expansion(pc->desktop->w2d())
 584                                         * prefs_get_double_attribute_limited("tools.freehand.pencil",
 585                                                                              "tolerance", 10.0, 1.0, 100.0) );
 586
 587     NR::Point b[4];
 588     g_assert(is_zero(pc->req_tangent)
 589              || is_unit_vector(pc->req_tangent));
 590     NR::Point const tHatEnd(0, 0);
 591     int const n_segs = sp_bezier_fit_cubic_full(b, NULL, pc->p, pc->npoints,
 592                                                 pc->req_tangent, tHatEnd, tolerance_sq, 1);
 593     if ( n_segs > 0
 594          && unsigned(pc->npoints) < G_N_ELEMENTS(pc->p) )
 595     {
 596         /* Fit and draw and reset state */
 597         sp_curve_reset(pc->red_curve);
 598         sp_curve_moveto(pc->red_curve, b[0]);
 599         sp_curve_curveto(pc->red_curve, b[1], b[2], b[3]);
 600         sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
 601         pc->red_curve_is_valid = true;
 602     } else {
 603         /* Fit and draw and copy last point */
 604
 605         g_assert(!sp_curve_empty(pc->red_curve));
 606
 607         /* Set up direction of next curve. */
 608         {
 609             NArtBpath const &last_seg = *sp_curve_last_bpath(pc->red_curve);
 610             pc->p[0] = last_seg.c(3);
 611             pc->npoints = 1;
 612             g_assert( last_seg.code == NR_CURVETO );
 613             /* Relevance: validity of last_seg.c(2). */
 614             NR::Point const req_vec( pc->p[0] - last_seg.c(2) );
 615             pc->req_tangent = ( ( NR::is_zero(req_vec) || !in_svg_plane(req_vec) )
 616                                 ? NR::Point(0, 0)
 617                                 : NR::unit_vector(req_vec) );
 618         }
 619
 620         sp_curve_append_continuous(pc->green_curve, pc->red_curve, 0.0625);
 621         SPCurve *curve = sp_curve_copy(pc->red_curve);
 622
 623         /// \todo fixme:
 624         SPCanvasItem *cshape = sp_canvas_bpath_new(sp_desktop_sketch(pc->desktop), curve);
 625         sp_curve_unref(curve);
 626         sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cshape), pc->green_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
 627
 628         pc->green_bpaths = g_slist_prepend(pc->green_bpaths, cshape);
 629
 630         pc->red_curve_is_valid = false;
 631     }
 632 }
 633
 634
 635 /*
 636   Local Variables:
 637   mode:c++
 638   c-file-style:"stroustrup"
 639   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 640   indent-tabs-mode:nil
 641   fill-column:99
 642   End:
 643 */
 644 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :