src/draw-context.cpp

   1 #define __SP_DRAW_CONTEXT_C__
   2
   3 /*
   4  * Generic drawing context
   5  *
   6  * Author:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *
   9  * Copyright (C) 2000 Lauris Kaplinski
  10  * Copyright (C) 2000-2001 Ximian, Inc.
  11  * Copyright (C) 2002 Lauris Kaplinski
  12  *
  13  * Released under GNU GPL, read the file 'COPYING' for more information
  14  */
  15
  16 #define DRAW_VERBOSE
  17
  18 #ifdef HAVE_CONFIG_H
  19 # include "config.h"
  20 #endif
  21 #include <gdk/gdkkeysyms.h>
  22
  23 #include "display/canvas-bpath.h"
  24 #include "xml/repr.h"
  25 #include "svg/svg.h"
  26 #include <glibmm/i18n.h>
  27 #include "libnr/n-art-bpath.h"
  28 #include "desktop.h"
  29 #include "desktop-affine.h"
  30 #include "desktop-handles.h"
  31 #include "desktop-style.h"
  32 #include "document.h"
  33 #include "draw-anchor.h"
  34 #include "macros.h"
  35 #include "message-stack.h"
  36 #include "pen-context.h"
  37 #include "prefs-utils.h"
  38 #include "selection.h"
  39 #include "selection-chemistry.h"
  40 #include "snap.h"
  41 #include "sp-path.h"
  42 #include "sp-namedview.h"
  43
  44 static void sp_draw_context_class_init(SPDrawContextClass *klass);
  45 static void sp_draw_context_init(SPDrawContext *dc);
  46 static void sp_draw_context_dispose(GObject *object);
  47
  48 static void sp_draw_context_setup(SPEventContext *ec);
  49 static void sp_draw_context_set(SPEventContext *ec, gchar const *key, gchar const *value);
  50 static void sp_draw_context_finish(SPEventContext *ec);
  51
  52 static gint sp_draw_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  53
  54 static void spdc_selection_changed(Inkscape::Selection *sel, SPDrawContext *dc);
  55 static void spdc_selection_modified(Inkscape::Selection *sel, guint flags, SPDrawContext *dc);
  56
  57 static void spdc_attach_selection(SPDrawContext *dc, Inkscape::Selection *sel);
  58
  59 static void spdc_flush_white(SPDrawContext *dc, SPCurve *gc);
  60
  61 static void spdc_reset_white(SPDrawContext *dc);
  62 static void spdc_free_colors(SPDrawContext *dc);
  63
  64
  65 static SPEventContextClass *draw_parent_class;
  66
  67
  68 GType
  69 sp_draw_context_get_type(void)
  70 {
  71     static GType type = 0;
  72     if (!type) {
  73         GTypeInfo info = {
  74             sizeof(SPDrawContextClass),
  75             NULL, NULL,
  76             (GClassInitFunc) sp_draw_context_class_init,
  77             NULL, NULL,
  78             sizeof(SPDrawContext),
  79             4,
  80             (GInstanceInitFunc) sp_draw_context_init,
  81             NULL,   /* value_table */
  82         };
  83         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPDrawContext", &info, (GTypeFlags)0);
  84     }
  85     return type;
  86 }
  87
  88 static void
  89 sp_draw_context_class_init(SPDrawContextClass *klass)
  90 {
  91     GObjectClass *object_class;
  92     SPEventContextClass *ec_class;
  93
  94     object_class = (GObjectClass *)klass;
  95     ec_class = (SPEventContextClass *) klass;
  96
  97     draw_parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
  98
  99     object_class->dispose = sp_draw_context_dispose;
 100
 101     ec_class->setup = sp_draw_context_setup;
 102     ec_class->set = sp_draw_context_set;
 103     ec_class->finish = sp_draw_context_finish;
 104     ec_class->root_handler = sp_draw_context_root_handler;
 105 }
 106
 107 static void
 108 sp_draw_context_init(SPDrawContext *dc)
 109 {
 110     dc->attach = FALSE;
 111
 112     dc->red_color = 0xff00007f;
 113     dc->blue_color = 0x0000ff7f;
 114     dc->green_color = 0x00ff007f;
 115     dc->red_curve_is_valid = false;
 116
 117     new (&dc->sel_changed_connection) sigc::connection();
 118     new (&dc->sel_modified_connection) sigc::connection();
 119 }
 120
 121 static void
 122 sp_draw_context_dispose(GObject *object)
 123 {
 124     SPDrawContext *dc = SP_DRAW_CONTEXT(object);
 125
 126     dc->sel_changed_connection.~connection();
 127     dc->sel_modified_connection.~connection();
 128
 129     if (dc->grab) {
 130         sp_canvas_item_ungrab(dc->grab, GDK_CURRENT_TIME);
 131         dc->grab = NULL;
 132     }
 133
 134     if (dc->selection) {
 135         dc->selection = NULL;
 136     }
 137
 138     spdc_free_colors(dc);
 139
 140     G_OBJECT_CLASS(draw_parent_class)->dispose(object);
 141 }
 142
 143 static void
 144 sp_draw_context_setup(SPEventContext *ec)
 145 {
 146     SPDrawContext *dc = SP_DRAW_CONTEXT(ec);
 147     SPDesktop *dt = ec->desktop;
 148
 149     if (((SPEventContextClass *) draw_parent_class)->setup) {
 150         ((SPEventContextClass *) draw_parent_class)->setup(ec);
 151     }
 152
 153     dc->selection = sp_desktop_selection(dt);
 154
 155     /* Connect signals to track selection changes */
 156     dc->sel_changed_connection = dc->selection->connectChanged(
 157         sigc::bind(sigc::ptr_fun(&spdc_selection_changed), dc)
 158     );
 159     dc->sel_modified_connection = dc->selection->connectModified(
 160         sigc::bind(sigc::ptr_fun(&spdc_selection_modified), dc)
 161     );
 162
 163     /* Create red bpath */
 164     dc->red_bpath = sp_canvas_bpath_new(sp_desktop_sketch(ec->desktop), NULL);
 165     sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->red_bpath), dc->red_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
 166     /* Create red curve */
 167     dc->red_curve = sp_curve_new_sized(4);
 168
 169     /* Create blue bpath */
 170     dc->blue_bpath = sp_canvas_bpath_new(sp_desktop_sketch(ec->desktop), NULL);
 171     sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->blue_bpath), dc->blue_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
 172     /* Create blue curve */
 173     dc->blue_curve = sp_curve_new_sized(8);
 174
 175     /* Create green curve */
 176     dc->green_curve = sp_curve_new_sized(64);
 177     /* No green anchor by default */
 178     dc->green_anchor = NULL;
 179     dc->green_closed = FALSE;
 180
 181     dc->attach = TRUE;
 182     spdc_attach_selection(dc, dc->selection);
 183 }
 184
 185 static void
 186 sp_draw_context_finish(SPEventContext *ec)
 187 {
 188     SPDrawContext *dc = SP_DRAW_CONTEXT(ec);
 189
 190     dc->sel_changed_connection.disconnect();
 191     dc->sel_modified_connection.disconnect();
 192
 193     if (dc->grab) {
 194         sp_canvas_item_ungrab(dc->grab, GDK_CURRENT_TIME);
 195     }
 196
 197     if (dc->selection) {
 198         dc->selection = NULL;
 199     }
 200
 201     spdc_free_colors(dc);
 202 }
 203
 204 static void
 205 sp_draw_context_set(SPEventContext *ec, const gchar *key, const gchar *value)
 206 {
 207 }
 208
 209 gint
 210 sp_draw_context_root_handler(SPEventContext *ec, GdkEvent *event)
 211 {
 212     //SPDrawContext *dc = SP_DRAW_CONTEXT(ec);
 213     SPDesktop *desktop = ec->desktop;
 214
 215     gint ret = FALSE;
 216
 217     switch (event->type) {
 218         case GDK_KEY_PRESS:
 219             switch (get_group0_keyval (&event->key)) {
 220                 case GDK_Escape:
 221                     sp_desktop_selection(desktop)->clear();
 222                     ret = TRUE;
 223                     break;
 224                 case GDK_Up:
 225                 case GDK_Down:
 226                 case GDK_KP_Up:
 227                 case GDK_KP_Down:
 228                     // prevent the zoom field from activation
 229                     if (!MOD__CTRL_ONLY) {
 230                         ret = TRUE;
 231                     }
 232                     break;
 233                 default:
 234             break;
 235         }
 236         break;
 237     default:
 238         break;
 239     }
 240
 241     if (!ret) {
 242         if (((SPEventContextClass *) draw_parent_class)->root_handler) {
 243             ret = ((SPEventContextClass *) draw_parent_class)->root_handler(ec, event);
 244         }
 245     }
 246
 247     return ret;
 248 }
 249
 250
 251 /*
 252  * Selection handlers
 253  */
 254
 255 static void
 256 spdc_selection_changed(Inkscape::Selection *sel, SPDrawContext *dc)
 257 {
 258     if (dc->attach) {
 259         spdc_attach_selection(dc, sel);
 260     }
 261 }
 262
 263 /* fixme: We have to ensure this is not delayed (Lauris) */
 264
 265 static void
 266 spdc_selection_modified(Inkscape::Selection *sel, guint flags, SPDrawContext *dc)
 267 {
 268     if (dc->attach) {
 269         spdc_attach_selection(dc, sel);
 270     }
 271 }
 272
 273 static void
 274 spdc_attach_selection(SPDrawContext *dc, Inkscape::Selection *sel)
 275 {
 276     /* We reset white and forget white/start/end anchors */
 277     spdc_reset_white(dc);
 278     dc->sa = NULL;
 279     dc->ea = NULL;
 280
 281     SPItem *item = dc->selection ? dc->selection->singleItem() : NULL;
 282
 283     if ( item && SP_IS_PATH(item) ) {
 284         /* Create new white data */
 285         /* Item */
 286         dc->white_item = item;
 287         /* Curve list */
 288         /* We keep it in desktop coordinates to eliminate calculation errors */
 289         SPCurve *norm = sp_shape_get_curve(SP_SHAPE(item));
 290         sp_curve_transform(norm, sp_item_i2d_affine(dc->white_item));
 291         g_return_if_fail( norm != NULL );
 292         dc->white_curves = g_slist_reverse(sp_curve_split(norm));
 293         sp_curve_unref(norm);
 294         /* Anchor list */
 295         for (GSList *l = dc->white_curves; l != NULL; l = l->next) {
 296             SPCurve *c;
 297             c = (SPCurve*)l->data;
 298             g_return_if_fail( c->end > 1 );
 299             if ( SP_CURVE_BPATH(c)->code == NR_MOVETO_OPEN ) {
 300                 NArtBpath *s, *e;
 301                 SPDrawAnchor *a;
 302                 s = sp_curve_first_bpath(c);
 303                 e = sp_curve_last_bpath(c);
 304                 a = sp_draw_anchor_new(dc, c, TRUE, NR::Point(s->x3, s->y3));
 305                 dc->white_anchors = g_slist_prepend(dc->white_anchors, a);
 306                 a = sp_draw_anchor_new(dc, c, FALSE, NR::Point(e->x3, e->y3));
 307                 dc->white_anchors = g_slist_prepend(dc->white_anchors, a);
 308             }
 309         }
 310         /* fixme: recalculate active anchor? */
 311     }
 312 }
 313
 314
 315 /**
 316  *  Snaps node or handle to PI/rotationsnapsperpi degree increments.
 317  *
 318  *  \param dc draw context
 319  *  \param p cursor point (to be changed by snapping)
 320  *  \param o origin point
 321  *  \param state  keyboard state to check if ctrl was pressed
 322 */
 323
 324 void spdc_endpoint_snap_rotation(SPEventContext const *const ec, NR::Point &p, NR::Point const o,
 325                                  guint state)
 326 {
 327     /* Control must be down for this snap to work */
 328     if ((state & GDK_CONTROL_MASK) == 0) {
 329         return;
 330     }
 331
 332     unsigned const snaps = abs(prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12));
 333     /* 0 means no snapping. */
 334
 335     /* mirrored by fabs, so this corresponds to 15 degrees */
 336     NR::Point best; /* best solution */
 337     double bn = NR_HUGE; /* best normal */
 338     double bdot = 0;
 339     NR::Point v = NR::Point(0, 1);
 340     double const r00 = cos(M_PI / snaps), r01 = sin(M_PI / snaps);
 341     double const r10 = -r01, r11 = r00;
 342
 343     NR::Point delta = p - o;
 344
 345     for (unsigned i = 0; i < snaps; i++) {
 346         double const ndot = fabs(dot(v,NR::rot90(delta)));
 347         NR::Point t(r00*v[NR::X] + r01*v[NR::Y],
 348                     r10*v[NR::X] + r11*v[NR::Y]);
 349         if (ndot < bn) {
 350             /* I think it is better numerically to use the normal, rather than the dot product
 351              * to assess solutions, but I haven't proven it. */
 352             bn = ndot;
 353             best = v;
 354             bdot = dot(v, delta);
 355         }
 356         v = t;
 357     }
 358
 359     if (fabs(bdot) > 0) {
 360         p = o + bdot * best;
 361
 362         /* Snap it along best vector */
 363         SnapManager const &m = SP_EVENT_CONTEXT_DESKTOP(ec)->namedview->snap_manager;
 364         p = m.constrainedSnap(Inkscape::Snapper::SNAP_POINT | Inkscape::Snapper::BBOX_POINT,
 365                               p, Inkscape::Snapper::ConstraintLine(best), NULL).getPoint();
 366     }
 367 }
 368
 369
 370 void spdc_endpoint_snap_free(SPEventContext const * const ec, NR::Point& p, guint const state)
 371 {
 372     /* Shift disables this snap */
 373     if (state & GDK_SHIFT_MASK) {
 374         return;
 375     }
 376
 377     /* FIXME: this should be doing bbox snap as well */
 378     SnapManager const &m = SP_EVENT_CONTEXT_DESKTOP(ec)->namedview->snap_manager;
 379     p = m.freeSnap(Inkscape::Snapper::BBOX_POINT | Inkscape::Snapper::SNAP_POINT, p, NULL).getPoint();
 380 }
 381
 382 static SPCurve *
 383 reverse_then_unref(SPCurve *orig)
 384 {
 385     SPCurve *ret = sp_curve_reverse(orig);
 386     sp_curve_unref(orig);
 387     return ret;
 388 }
 389
 390 /**
 391  * Concats red, blue and green.
 392  * If any anchors are defined, process these, optionally removing curves from white list
 393  * Invoke _flush_white to write result back to object.
 394  */
 395 void
 396 spdc_concat_colors_and_flush(SPDrawContext *dc, gboolean forceclosed)
 397 {
 398     /* Concat RBG */
 399     SPCurve *c = dc->green_curve;
 400
 401     /* Green */
 402     dc->green_curve = sp_curve_new_sized(64);
 403     while (dc->green_bpaths) {
 404         gtk_object_destroy(GTK_OBJECT(dc->green_bpaths->data));
 405         dc->green_bpaths = g_slist_remove(dc->green_bpaths, dc->green_bpaths->data);
 406     }
 407     /* Blue */
 408     sp_curve_append_continuous(c, dc->blue_curve, 0.0625);
 409     sp_curve_reset(dc->blue_curve);
 410     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(dc->blue_bpath), NULL);
 411     /* Red */
 412     if (dc->red_curve_is_valid) {
 413         sp_curve_append_continuous(c, dc->red_curve, 0.0625);
 414     }
 415     sp_curve_reset(dc->red_curve);
 416     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(dc->red_bpath), NULL);
 417
 418     if (sp_curve_empty(c)) {
 419         sp_curve_unref(c);
 420         return;
 421     }
 422
 423     /* Step A - test, whether we ended on green anchor */
 424     if ( forceclosed || ( dc->green_anchor && dc->green_anchor->active ) ) {
 425         // We hit green anchor, closing Green-Blue-Red
 426         SP_EVENT_CONTEXT_DESKTOP(dc)->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Path is closed."));
 427         sp_curve_closepath_current(c);
 428         /* Closed path, just flush */
 429         spdc_flush_white(dc, c);
 430         sp_curve_unref(c);
 431         return;
 432     }
 433
 434     /* Step B - both start and end anchored to same curve */
 435     if ( dc->sa && dc->ea
 436          && ( dc->sa->curve == dc->ea->curve )
 437          && ( ( dc->sa != dc->ea )
 438               || dc->sa->curve->closed ) )
 439     {
 440         // We hit bot start and end of single curve, closing paths
 441         SP_EVENT_CONTEXT_DESKTOP(dc)->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Closing path."));
 442         if (dc->sa->start && !(dc->sa->curve->closed) ) {
 443             c = reverse_then_unref(c);
 444         }
 445         sp_curve_append_continuous(dc->sa->curve, c, 0.0625);
 446         sp_curve_unref(c);
 447         sp_curve_closepath_current(dc->sa->curve);
 448         spdc_flush_white(dc, NULL);
 449         return;
 450     }
 451
 452     /* Step C - test start */
 453     if (dc->sa) {
 454         SPCurve *s = dc->sa->curve;
 455         dc->white_curves = g_slist_remove(dc->white_curves, s);
 456         if (dc->sa->start) {
 457             s = reverse_then_unref(s);
 458         }
 459         sp_curve_append_continuous(s, c, 0.0625);
 460         sp_curve_unref(c);
 461         c = s;
 462     } else /* Step D - test end */ if (dc->ea) {
 463         SPCurve *e = dc->ea->curve;
 464         dc->white_curves = g_slist_remove(dc->white_curves, e);
 465         if (!dc->ea->start) {
 466             e = reverse_then_unref(e);
 467         }
 468         sp_curve_append_continuous(c, e, 0.0625);
 469         sp_curve_unref(e);
 470     }
 471
 472
 473     spdc_flush_white(dc, c);
 474
 475     sp_curve_unref(c);
 476 }
 477
 478 static char const *
 479 tool_name(SPDrawContext *dc)
 480 {
 481     return ( SP_IS_PEN_CONTEXT(dc)
 482              ? "tools.freehand.pen"
 483              : "tools.freehand.pencil" );
 484 }
 485
 486 /*
 487  * Flushes white curve(s) and additional curve into object
 488  *
 489  * No cleaning of colored curves - this has to be done by caller
 490  * No rereading of white data, so if you cannot rely on ::modified, do it in caller
 491  *
 492  */
 493
 494 static void
 495 spdc_flush_white(SPDrawContext *dc, SPCurve *gc)
 496 {
 497     SPCurve *c;
 498
 499     if (dc->white_curves) {
 500         g_assert(dc->white_item);
 501         c = sp_curve_concat(dc->white_curves);
 502         g_slist_free(dc->white_curves);
 503         dc->white_curves = NULL;
 504         if (gc) {
 505             sp_curve_append(c, gc, FALSE);
 506         }
 507     } else if (gc) {
 508         c = gc;
 509         sp_curve_ref(c);
 510     } else {
 511         return;
 512     }
 513
 514     /* Now we have to go back to item coordinates at last */
 515     sp_curve_transform(c, ( dc->white_item
 516                             ? sp_item_dt2i_affine(dc->white_item)
 517                             : sp_desktop_dt2root_affine(SP_EVENT_CONTEXT_DESKTOP(dc)) ));
 518
 519     SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(dc);
 520     SPDocument *doc = sp_desktop_document(desktop);
 521
 522     if ( c && !sp_curve_empty(c) ) {
 523         /* We actually have something to write */
 524
 525         Inkscape::XML::Node *repr;
 526         if (dc->white_item) {
 527             repr = SP_OBJECT_REPR(dc->white_item);
 528         } else {
 529             repr = sp_repr_new("svg:path");
 530             /* Set style */
 531             sp_desktop_apply_style_tool(desktop, repr, tool_name(dc), false);
 532         }
 533
 534         gchar *str = sp_svg_write_path(SP_CURVE_BPATH(c));
 535         g_assert( str != NULL );
 536         repr->setAttribute("d", str);
 537         g_free(str);
 538
 539         if (!dc->white_item) {
 540             /* Attach repr */
 541             SPItem *item = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr));
 542             dc->selection->set(repr);
 543             Inkscape::GC::release(repr);
 544             item->transform = i2i_affine(desktop->currentRoot(), desktop->currentLayer());
 545             item->updateRepr();
 546         }
 547
 548         sp_document_done(doc, SP_IS_PEN_CONTEXT(dc)? SP_VERB_CONTEXT_PEN : SP_VERB_CONTEXT_PENCIL,
 549                          _("Draw path"));
 550     }
 551
 552     sp_curve_unref(c);
 553
 554     /* Flush pending updates */
 555     sp_document_ensure_up_to_date(doc);
 556 }
 557
 558 /**
 559  * Returns FIRST active anchor (the activated one).
 560  */
 561 SPDrawAnchor *
 562 spdc_test_inside(SPDrawContext *dc, NR::Point p)
 563 {
 564     SPDrawAnchor *active = NULL;
 565
 566     /* Test green anchor */
 567     if (dc->green_anchor) {
 568         active = sp_draw_anchor_test(dc->green_anchor, p, TRUE);
 569     }
 570
 571     for (GSList *l = dc->white_anchors; l != NULL; l = l->next) {
 572         SPDrawAnchor *na = sp_draw_anchor_test((SPDrawAnchor *) l->data, p, !active);
 573         if ( !active && na ) {
 574             active = na;
 575         }
 576     }
 577
 578     return active;
 579 }
 580
 581 static void
 582 spdc_reset_white(SPDrawContext *dc)
 583 {
 584     if (dc->white_item) {
 585         /* We do not hold refcount */
 586         dc->white_item = NULL;
 587     }
 588     while (dc->white_curves) {
 589         sp_curve_unref((SPCurve *) dc->white_curves->data);
 590         dc->white_curves = g_slist_remove(dc->white_curves, dc->white_curves->data);
 591     }
 592     while (dc->white_anchors) {
 593         sp_draw_anchor_destroy((SPDrawAnchor *) dc->white_anchors->data);
 594         dc->white_anchors = g_slist_remove(dc->white_anchors, dc->white_anchors->data);
 595     }
 596 }
 597
 598 static void
 599 spdc_free_colors(SPDrawContext *dc)
 600 {
 601     /* Red */
 602     if (dc->red_bpath) {
 603         gtk_object_destroy(GTK_OBJECT(dc->red_bpath));
 604         dc->red_bpath = NULL;
 605     }
 606     if (dc->red_curve) {
 607         dc->red_curve = sp_curve_unref(dc->red_curve);
 608     }
 609     /* Blue */
 610     if (dc->blue_bpath) {
 611         gtk_object_destroy(GTK_OBJECT(dc->blue_bpath));
 612         dc->blue_bpath = NULL;
 613     }
 614     if (dc->blue_curve) {
 615         dc->blue_curve = sp_curve_unref(dc->blue_curve);
 616     }
 617     /* Green */
 618     while (dc->green_bpaths) {
 619         gtk_object_destroy(GTK_OBJECT(dc->green_bpaths->data));
 620         dc->green_bpaths = g_slist_remove(dc->green_bpaths, dc->green_bpaths->data);
 621     }
 622     if (dc->green_curve) {
 623         dc->green_curve = sp_curve_unref(dc->green_curve);
 624     }
 625     if (dc->green_anchor) {
 626         dc->green_anchor = sp_draw_anchor_destroy(dc->green_anchor);
 627     }
 628     /* White */
 629     if (dc->white_item) {
 630         /* We do not hold refcount */
 631         dc->white_item = NULL;
 632     }
 633     while (dc->white_curves) {
 634         sp_curve_unref((SPCurve *) dc->white_curves->data);
 635         dc->white_curves = g_slist_remove(dc->white_curves, dc->white_curves->data);
 636     }
 637     while (dc->white_anchors) {
 638         sp_draw_anchor_destroy((SPDrawAnchor *) dc->white_anchors->data);
 639         dc->white_anchors = g_slist_remove(dc->white_anchors, dc->white_anchors->data);
 640     }
 641 }
 642
 643
 644 /*
 645   Local Variables:
 646   mode:c++
 647   c-file-style:"stroustrup"
 648   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 649   indent-tabs-mode:nil
 650   fill-column:99
 651   End:
 652 */
 653 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :