src/pen-context.cpp

   1 /** \file
   2  * Pen 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 "pen-context.h"
  21 #include "sp-namedview.h"
  22 #include "sp-metrics.h"
  23 #include "desktop.h"
  24 #include "desktop-handles.h"
  25 #include "selection.h"
  26 #include "draw-anchor.h"
  27 #include "message-stack.h"
  28 #include "message-context.h"
  29 #include "prefs-utils.h"
  30 #include "sp-path.h"
  31
  32 #include "pixmaps/cursor-pen.xpm"
  33 #include "pixmaps/cursor-pen.pixbuf"
  34 #include "display/canvas-bpath.h"
  35 #include "display/sp-ctrlline.h"
  36 #include "display/sodipodi-ctrl.h"
  37 #include <glibmm/i18n.h>
  38 #include "libnr/n-art-bpath.h"
  39 #include "helper/units.h"
  40 #include "macros.h"
  41 #include "context-fns.h"
  42
  43
  44 static void sp_pen_context_class_init(SPPenContextClass *klass);
  45 static void sp_pen_context_init(SPPenContext *pc);
  46 static void sp_pen_context_dispose(GObject *object);
  47
  48 static void sp_pen_context_setup(SPEventContext *ec);
  49 static void sp_pen_context_finish(SPEventContext *ec);
  50 static void sp_pen_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
  51 static gint sp_pen_context_root_handler(SPEventContext *ec, GdkEvent *event);
  52
  53 static void spdc_pen_set_initial_point(SPPenContext *pc, NR::Point const p);
  54 static void spdc_pen_set_subsequent_point(SPPenContext *pc, NR::Point const p, bool statusbar);
  55 static void spdc_pen_set_ctrl(SPPenContext *pc, NR::Point const p, guint state);
  56 static void spdc_pen_finish_segment(SPPenContext *pc, NR::Point p, guint state);
  57
  58 static void spdc_pen_finish(SPPenContext *pc, gboolean closed);
  59
  60 static gint pen_handle_button_press(SPPenContext *const pc, GdkEventButton const &bevent);
  61 static gint pen_handle_motion_notify(SPPenContext *const pc, GdkEventMotion const &mevent);
  62 static gint pen_handle_button_release(SPPenContext *const pc, GdkEventButton const &revent);
  63 static gint pen_handle_2button_press(SPPenContext *const pc);
  64 static gint pen_handle_key_press(SPPenContext *const pc, GdkEvent *event);
  65 static void spdc_reset_colors(SPPenContext *pc);
  66
  67 static void pen_disable_events(SPPenContext *const pc);
  68 static void pen_enable_events(SPPenContext *const pc);
  69
  70 static NR::Point pen_drag_origin_w(0, 0);
  71 static bool pen_within_tolerance = false;
  72
  73 static SPDrawContextClass *pen_parent_class;
  74
  75 /**
  76  * Register SPPenContext with Gdk and return its type.
  77  */
  78 GType
  79 sp_pen_context_get_type(void)
  80 {
  81     static GType type = 0;
  82     if (!type) {
  83         GTypeInfo info = {
  84             sizeof(SPPenContextClass),
  85             NULL, NULL,
  86             (GClassInitFunc) sp_pen_context_class_init,
  87             NULL, NULL,
  88             sizeof(SPPenContext),
  89             4,
  90             (GInstanceInitFunc) sp_pen_context_init,
  91             NULL,   /* value_table */
  92         };
  93         type = g_type_register_static(SP_TYPE_DRAW_CONTEXT, "SPPenContext", &info, (GTypeFlags)0);
  94     }
  95     return type;
  96 }
  97
  98 /**
  99  * Initialize the SPPenContext vtable.
 100  */
 101 static void
 102 sp_pen_context_class_init(SPPenContextClass *klass)
 103 {
 104     GObjectClass *object_class;
 105     SPEventContextClass *event_context_class;
 106
 107     object_class = (GObjectClass *) klass;
 108     event_context_class = (SPEventContextClass *) klass;
 109
 110     pen_parent_class = (SPDrawContextClass*)g_type_class_peek_parent(klass);
 111
 112     object_class->dispose = sp_pen_context_dispose;
 113
 114     event_context_class->setup = sp_pen_context_setup;
 115     event_context_class->finish = sp_pen_context_finish;
 116     event_context_class->set = sp_pen_context_set;
 117     event_context_class->root_handler = sp_pen_context_root_handler;
 118 }
 119
 120 /**
 121  * Callback to initialize SPPenContext object.
 122  */
 123 static void
 124 sp_pen_context_init(SPPenContext *pc)
 125 {
 126
 127     SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
 128
 129     event_context->cursor_shape = cursor_pen_xpm;
 130     event_context->cursor_pixbuf = gdk_pixbuf_new_from_inline(
 131             -1,
 132             cursor_pen_pixbuf,
 133             FALSE,
 134             NULL);
 135     event_context->hot_x = 4;
 136     event_context->hot_y = 4;
 137
 138     pc->npoints = 0;
 139     pc->mode = SP_PEN_CONTEXT_MODE_CLICK;
 140     pc->state = SP_PEN_CONTEXT_POINT;
 141
 142     pc->c0 = NULL;
 143     pc->c1 = NULL;
 144     pc->cl0 = NULL;
 145     pc->cl1 = NULL;
 146
 147     pc->events_disabled = 0;
 148 }
 149
 150 /**
 151  * Callback to destroy the SPPenContext object's members and itself.
 152  */
 153 static void
 154 sp_pen_context_dispose(GObject *object)
 155 {
 156     SPPenContext *pc;
 157
 158     pc = SP_PEN_CONTEXT(object);
 159
 160     if (pc->c0) {
 161         gtk_object_destroy(GTK_OBJECT(pc->c0));
 162         pc->c0 = NULL;
 163     }
 164     if (pc->c1) {
 165         gtk_object_destroy(GTK_OBJECT(pc->c1));
 166         pc->c1 = NULL;
 167     }
 168     if (pc->cl0) {
 169         gtk_object_destroy(GTK_OBJECT(pc->cl0));
 170         pc->cl0 = NULL;
 171     }
 172     if (pc->cl1) {
 173         gtk_object_destroy(GTK_OBJECT(pc->cl1));
 174         pc->cl1 = NULL;
 175     }
 176
 177     G_OBJECT_CLASS(pen_parent_class)->dispose(object);
 178 }
 179
 180 /**
 181  * Callback to initialize SPPenContext object.
 182  */
 183 static void
 184 sp_pen_context_setup(SPEventContext *ec)
 185 {
 186     SPPenContext *pc;
 187
 188     pc = SP_PEN_CONTEXT(ec);
 189
 190     if (((SPEventContextClass *) pen_parent_class)->setup) {
 191         ((SPEventContextClass *) pen_parent_class)->setup(ec);
 192     }
 193
 194     /* Pen indicators */
 195     pc->c0 = sp_canvas_item_new(sp_desktop_controls(SP_EVENT_CONTEXT_DESKTOP(ec)), SP_TYPE_CTRL, "shape", SP_CTRL_SHAPE_CIRCLE,
 196                                 "size", 4.0, "filled", 0, "fill_color", 0xff00007f, "stroked", 1, "stroke_color", 0x0000ff7f, NULL);
 197     pc->c1 = sp_canvas_item_new(sp_desktop_controls(SP_EVENT_CONTEXT_DESKTOP(ec)), SP_TYPE_CTRL, "shape", SP_CTRL_SHAPE_CIRCLE,
 198                                 "size", 4.0, "filled", 0, "fill_color", 0xff00007f, "stroked", 1, "stroke_color", 0x0000ff7f, NULL);
 199     pc->cl0 = sp_canvas_item_new(sp_desktop_controls(SP_EVENT_CONTEXT_DESKTOP(ec)), SP_TYPE_CTRLLINE, NULL);
 200     sp_ctrlline_set_rgba32(SP_CTRLLINE(pc->cl0), 0x0000007f);
 201     pc->cl1 = sp_canvas_item_new(sp_desktop_controls(SP_EVENT_CONTEXT_DESKTOP(ec)), SP_TYPE_CTRLLINE, NULL);
 202     sp_ctrlline_set_rgba32(SP_CTRLLINE(pc->cl1), 0x0000007f);
 203
 204     sp_canvas_item_hide(pc->c0);
 205     sp_canvas_item_hide(pc->c1);
 206     sp_canvas_item_hide(pc->cl0);
 207     sp_canvas_item_hide(pc->cl1);
 208
 209     sp_event_context_read(ec, "mode");
 210
 211     pc->anchor_statusbar = false;
 212
 213     if (prefs_get_int_attribute("tools.freehand.pen", "selcue", 0) != 0) {
 214         ec->enableSelectionCue();
 215     }
 216 }
 217
 218 static void
 219 pen_cancel (SPPenContext *const pc)
 220 {
 221     pc->state = SP_PEN_CONTEXT_STOP;
 222     spdc_reset_colors(pc);
 223     sp_canvas_item_hide(pc->c0);
 224     sp_canvas_item_hide(pc->c1);
 225     sp_canvas_item_hide(pc->cl0);
 226     sp_canvas_item_hide(pc->cl1);
 227     pc->_message_context->clear();
 228     pc->_message_context->flash(Inkscape::NORMAL_MESSAGE, _("Drawing cancelled"));
 229
 230     sp_canvas_end_forced_full_redraws(pc->desktop->canvas);
 231 }
 232
 233 /**
 234  * Finalization callback.
 235  */
 236 static void
 237 sp_pen_context_finish(SPEventContext *ec)
 238 {
 239     SPPenContext *pc = SP_PEN_CONTEXT(ec);
 240
 241     if (pc->npoints != 0) {
 242         pen_cancel (pc);
 243     }
 244
 245     if (((SPEventContextClass *) pen_parent_class)->finish) {
 246         ((SPEventContextClass *) pen_parent_class)->finish(ec);
 247     }
 248 }
 249
 250 /**
 251  * Callback that sets key to value in pen context.
 252  */
 253 static void
 254 sp_pen_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
 255 {
 256     SPPenContext *pc = SP_PEN_CONTEXT(ec);
 257
 258     if (!strcmp(key, "mode")) {
 259         if ( val && !strcmp(val, "drag") ) {
 260             pc->mode = SP_PEN_CONTEXT_MODE_DRAG;
 261         } else {
 262             pc->mode = SP_PEN_CONTEXT_MODE_CLICK;
 263         }
 264     }
 265 }
 266
 267 /**
 268  * Snaps new node relative to the previous node.
 269  */
 270 static void
 271 spdc_endpoint_snap(SPPenContext const *const pc, NR::Point &p, guint const state)
 272 {
 273     if (pc->npoints > 0) {
 274         spdc_endpoint_snap_rotation(pc, p, pc->p[0], state);
 275     }
 276
 277     spdc_endpoint_snap_free(pc, p, state);
 278 }
 279
 280 /**
 281  * Snaps new node's handle relative to the new node.
 282  */
 283 static void
 284 spdc_endpoint_snap_handle(SPPenContext const *const pc, NR::Point &p, guint const state)
 285 {
 286     g_return_if_fail(( pc->npoints == 2 ||
 287                        pc->npoints == 5   ));
 288
 289     spdc_endpoint_snap_rotation(pc, p, pc->p[pc->npoints - 2], state);
 290     spdc_endpoint_snap_free(pc, p, state);
 291 }
 292
 293 /**
 294  * Callback to handle all pen events.
 295  */
 296 static gint
 297 sp_pen_context_root_handler(SPEventContext *ec, GdkEvent *event)
 298 {
 299     SPPenContext *const pc = SP_PEN_CONTEXT(ec);
 300
 301     gint ret = FALSE;
 302
 303     switch (event->type) {
 304         case GDK_BUTTON_PRESS:
 305             ret = pen_handle_button_press(pc, event->button);
 306             break;
 307
 308         case GDK_MOTION_NOTIFY:
 309             ret = pen_handle_motion_notify(pc, event->motion);
 310             break;
 311
 312         case GDK_BUTTON_RELEASE:
 313             ret = pen_handle_button_release(pc, event->button);
 314             break;
 315
 316         case GDK_2BUTTON_PRESS:
 317             ret = pen_handle_2button_press(pc);
 318             break;
 319
 320         case GDK_KEY_PRESS:
 321             ret = pen_handle_key_press(pc, event);
 322             break;
 323
 324         default:
 325             break;
 326     }
 327
 328     if (!ret) {
 329         gint (*const parent_root_handler)(SPEventContext *, GdkEvent *)
 330             = ((SPEventContextClass *) pen_parent_class)->root_handler;
 331         if (parent_root_handler) {
 332             ret = parent_root_handler(ec, event);
 333         }
 334     }
 335
 336     return ret;
 337 }
 338
 339 /**
 340  * Handle mouse button press event.
 341  */
 342 static gint pen_handle_button_press(SPPenContext *const pc, GdkEventButton const &bevent)
 343 {
 344     if (pc->events_disabled) {
 345         // skip event processing if events are disabled
 346         return FALSE;
 347     }
 348
 349     gint ret = FALSE;
 350     if (bevent.button == 1) {
 351
 352         SPDrawContext * const dc = SP_DRAW_CONTEXT(pc);
 353         SPDesktop * const desktop = SP_EVENT_CONTEXT_DESKTOP(dc);
 354
 355         if (Inkscape::have_viable_layer(desktop, dc->_message_context) == false) {
 356             return TRUE;
 357         }
 358
 359         NR::Point const event_w(bevent.x, bevent.y);
 360         pen_drag_origin_w = event_w;
 361         pen_within_tolerance = true;
 362
 363         /* Test whether we hit any anchor. */
 364         SPDrawAnchor * const anchor = spdc_test_inside(pc, event_w);
 365
 366         NR::Point const event_dt(desktop->w2d(event_w));
 367         switch (pc->mode) {
 368             case SP_PEN_CONTEXT_MODE_CLICK:
 369                 /* In click mode we add point on release */
 370                 switch (pc->state) {
 371                     case SP_PEN_CONTEXT_POINT:
 372                     case SP_PEN_CONTEXT_CONTROL:
 373                     case SP_PEN_CONTEXT_CLOSE:
 374                         break;
 375                     case SP_PEN_CONTEXT_STOP:
 376                         /* This is allowed, if we just cancelled curve */
 377                         pc->state = SP_PEN_CONTEXT_POINT;
 378                         break;
 379                     default:
 380                         break;
 381                 }
 382                 break;
 383             case SP_PEN_CONTEXT_MODE_DRAG:
 384                 switch (pc->state) {
 385                     case SP_PEN_CONTEXT_STOP:
 386                         /* This is allowed, if we just cancelled curve */
 387                     case SP_PEN_CONTEXT_POINT:
 388                         if (pc->npoints == 0) {
 389
 390                             /* Set start anchor */
 391                             pc->sa = anchor;
 392                             NR::Point p;
 393                             if (anchor) {
 394
 395                                 /* Adjust point to anchor if needed */
 396                                 p = anchor->dp;
 397                                 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Continuing selected path"));
 398
 399                             } else {
 400
 401                                 // This is the first click of a new curve; deselect item so that
 402                                 // this curve is not combined with it (unless it is drawn from its
 403                                 // anchor, which is handled by the sibling branch above)
 404                                 Inkscape::Selection * const selection = sp_desktop_selection(desktop);
 405                                 if (!(bevent.state & GDK_SHIFT_MASK)) {
 406
 407                                     selection->clear();
 408                                     desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
 409
 410                                 } else if (selection->singleItem() && SP_IS_PATH(selection->singleItem())) {
 411
 412                                     desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Appending to selected path"));
 413                                 }
 414
 415                                 /* Create green anchor */
 416                                 p = event_dt;
 417                                 spdc_endpoint_snap(pc, p, bevent.state);
 418                                 pc->green_anchor = sp_draw_anchor_new(pc, pc->green_curve, TRUE, p);
 419                             }
 420                             spdc_pen_set_initial_point(pc, p);
 421                         } else {
 422
 423                             /* Set end anchor */
 424                             pc->ea = anchor;
 425                             NR::Point p;
 426                             if (anchor) {
 427
 428                                 p = anchor->dp;
 429                                 // we hit an anchor, will finish the curve (either with or without closing)
 430                                 // in release handler
 431                                 pc->state = SP_PEN_CONTEXT_CLOSE;
 432
 433                                 if (pc->green_anchor && pc->green_anchor->active) {
 434                                     // we clicked on the current curve start, so close it even if
 435                                     // we drag a handle away from it
 436                                     dc->green_closed = TRUE;
 437                                 }
 438                                 ret = TRUE;
 439                                 break;
 440
 441                             } else {
 442
 443                                 p = event_dt;
 444                                 spdc_endpoint_snap(pc, p, bevent.state); /* Snap node only if not hitting anchor. */
 445                                 spdc_pen_set_subsequent_point(pc, p, true);
 446                             }
 447
 448                         }
 449                         pc->state = SP_PEN_CONTEXT_CONTROL;
 450                         ret = TRUE;
 451                         break;
 452                     case SP_PEN_CONTEXT_CONTROL:
 453                         g_warning("Button down in CONTROL state");
 454                         break;
 455                     case SP_PEN_CONTEXT_CLOSE:
 456                         g_warning("Button down in CLOSE state");
 457                         break;
 458                     default:
 459                         break;
 460                 }
 461                 break;
 462             default:
 463                 break;
 464         }
 465     } else if (bevent.button == 3) {
 466         if (pc->npoints != 0) {
 467             spdc_pen_finish(pc, FALSE);
 468             ret = TRUE;
 469         }
 470     }
 471
 472     return ret;
 473 }
 474
 475 /**
 476  * Handle motion_notify event.
 477  */
 478 static gint
 479 pen_handle_motion_notify(SPPenContext *const pc, GdkEventMotion const &mevent)
 480 {
 481     gint ret = FALSE;
 482
 483     if (mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
 484         // allow middle-button scrolling
 485         return FALSE;
 486     }
 487
 488     if (pc->events_disabled) {
 489         // skip motion events if pen events are disabled
 490         return FALSE;
 491     }
 492
 493     NR::Point const event_w(mevent.x,
 494                             mevent.y);
 495     if (pen_within_tolerance) {
 496         gint const tolerance = prefs_get_int_attribute_limited("options.dragtolerance",
 497                                                                "value", 0, 0, 100);
 498         if ( NR::LInfty( event_w - pen_drag_origin_w ) < tolerance ) {
 499             return FALSE;   // Do not drag if we're within tolerance from origin.
 500         }
 501     }
 502     // Once the user has moved farther than tolerance from the original location
 503     // (indicating they intend to move the object, not click), then always process the
 504     // motion notify coordinates as given (no snapping back to origin)
 505     pen_within_tolerance = false;
 506
 507     SPDesktop *const dt = pc->desktop;
 508     if ( ( mevent.state & GDK_BUTTON1_MASK ) && !pc->grab ) {
 509         /* Grab mouse, so release will not pass unnoticed */
 510         pc->grab = SP_CANVAS_ITEM(dt->acetate);
 511         sp_canvas_item_grab(pc->grab, ( GDK_KEY_PRESS_MASK | GDK_BUTTON_PRESS_MASK   |
 512                                         GDK_BUTTON_RELEASE_MASK |
 513                                         GDK_POINTER_MOTION_MASK  ),
 514                             NULL, mevent.time);
 515     }
 516
 517     /* Find desktop coordinates */
 518     NR::Point p = dt->w2d(event_w);
 519
 520     /* Test, whether we hit any anchor */
 521     SPDrawAnchor *anchor = spdc_test_inside(pc, event_w);
 522
 523     switch (pc->mode) {
 524         case SP_PEN_CONTEXT_MODE_CLICK:
 525             switch (pc->state) {
 526                 case SP_PEN_CONTEXT_POINT:
 527                     if ( pc->npoints != 0 ) {
 528                         /* Only set point, if we are already appending */
 529                         spdc_endpoint_snap(pc, p, mevent.state);
 530                         spdc_pen_set_subsequent_point(pc, p, true);
 531                         ret = TRUE;
 532                     }
 533                     break;
 534                 case SP_PEN_CONTEXT_CONTROL:
 535                 case SP_PEN_CONTEXT_CLOSE:
 536                     /* Placing controls is last operation in CLOSE state */
 537                     spdc_endpoint_snap(pc, p, mevent.state);
 538                     spdc_pen_set_ctrl(pc, p, mevent.state);
 539                     ret = TRUE;
 540                     break;
 541                 case SP_PEN_CONTEXT_STOP:
 542                     /* This is perfectly valid */
 543                     break;
 544                 default:
 545                     break;
 546             }
 547             break;
 548         case SP_PEN_CONTEXT_MODE_DRAG:
 549             switch (pc->state) {
 550                 case SP_PEN_CONTEXT_POINT:
 551                     if ( pc->npoints > 0 ) {
 552                         /* Only set point, if we are already appending */
 553
 554                         if (!anchor) {   /* Snap node only if not hitting anchor */
 555                             spdc_endpoint_snap(pc, p, mevent.state);
 556                         }
 557
 558                         spdc_pen_set_subsequent_point(pc, p, !anchor);
 559
 560                         if (anchor && !pc->anchor_statusbar) {
 561                             pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> or <b>click and drag</b> to close and finish the path."));
 562                             pc->anchor_statusbar = true;
 563                         } else if (!anchor && pc->anchor_statusbar) {
 564                             pc->_message_context->clear();
 565                             pc->anchor_statusbar = false;
 566                         }
 567
 568                         ret = TRUE;
 569                     } else {
 570                         if (anchor && !pc->anchor_statusbar) {
 571                             pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> or <b>click and drag</b> to continue the path from this point."));
 572                             pc->anchor_statusbar = true;
 573                         } else if (!anchor && pc->anchor_statusbar) {
 574                             pc->_message_context->clear();
 575                             pc->anchor_statusbar = false;
 576                         }
 577                     }
 578                     break;
 579                 case SP_PEN_CONTEXT_CONTROL:
 580                 case SP_PEN_CONTEXT_CLOSE:
 581                     /* Placing controls is last operation in CLOSE state */
 582
 583                     // snap the handle
 584                     spdc_endpoint_snap_handle(pc, p, mevent.state);
 585
 586                     spdc_pen_set_ctrl(pc, p, mevent.state);
 587                     ret = TRUE;
 588                     break;
 589                 case SP_PEN_CONTEXT_STOP:
 590                     /* This is perfectly valid */
 591                     break;
 592                 default:
 593                     break;
 594             }
 595             break;
 596         default:
 597             break;
 598     }
 599     return ret;
 600 }
 601
 602 /**
 603  * Handle mouse button release event.
 604  */
 605 static gint
 606 pen_handle_button_release(SPPenContext *const pc, GdkEventButton const &revent)
 607 {
 608     if (pc->events_disabled) {
 609         // skip event processing if events are disabled
 610         return FALSE;
 611     }
 612
 613     gint ret = FALSE;
 614     if ( revent.button == 1 ) {
 615
 616         SPDrawContext *dc = SP_DRAW_CONTEXT (pc);
 617
 618         NR::Point const event_w(revent.x,
 619                                 revent.y);
 620         /* Find desktop coordinates */
 621         NR::Point p = pc->desktop->w2d(event_w);
 622
 623         /* Test whether we hit any anchor. */
 624         SPDrawAnchor *anchor = spdc_test_inside(pc, event_w);
 625
 626         switch (pc->mode) {
 627             case SP_PEN_CONTEXT_MODE_CLICK:
 628                 switch (pc->state) {
 629                     case SP_PEN_CONTEXT_POINT:
 630                         if ( pc->npoints == 0 ) {
 631                             /* Start new thread only with button release */
 632                             if (anchor) {
 633                                 p = anchor->dp;
 634                             }
 635                             pc->sa = anchor;
 636                             spdc_pen_set_initial_point(pc, p);
 637                         } else {
 638                             /* Set end anchor here */
 639                             pc->ea = anchor;
 640                             if (anchor) {
 641                                 p = anchor->dp;
 642                             }
 643                         }
 644                         pc->state = SP_PEN_CONTEXT_CONTROL;
 645                         ret = TRUE;
 646                         break;
 647                     case SP_PEN_CONTEXT_CONTROL:
 648                         /* End current segment */
 649                         spdc_endpoint_snap(pc, p, revent.state);
 650                         spdc_pen_finish_segment(pc, p, revent.state);
 651                         pc->state = SP_PEN_CONTEXT_POINT;
 652                         ret = TRUE;
 653                         break;
 654                     case SP_PEN_CONTEXT_CLOSE:
 655                         /* End current segment */
 656                         if (!anchor) {   /* Snap node only if not hitting anchor */
 657                             spdc_endpoint_snap(pc, p, revent.state);
 658                         }
 659                         spdc_pen_finish_segment(pc, p, revent.state);
 660                         spdc_pen_finish(pc, TRUE);
 661                         pc->state = SP_PEN_CONTEXT_POINT;
 662                         ret = TRUE;
 663                         break;
 664                     case SP_PEN_CONTEXT_STOP:
 665                         /* This is allowed, if we just cancelled curve */
 666                         pc->state = SP_PEN_CONTEXT_POINT;
 667                         ret = TRUE;
 668                         break;
 669                     default:
 670                         break;
 671                 }
 672                 break;
 673             case SP_PEN_CONTEXT_MODE_DRAG:
 674                 switch (pc->state) {
 675                     case SP_PEN_CONTEXT_POINT:
 676                     case SP_PEN_CONTEXT_CONTROL:
 677                         spdc_endpoint_snap(pc, p, revent.state);
 678                         spdc_pen_finish_segment(pc, p, revent.state);
 679                         break;
 680                     case SP_PEN_CONTEXT_CLOSE:
 681                         spdc_endpoint_snap(pc, p, revent.state);
 682                         spdc_pen_finish_segment(pc, p, revent.state);
 683                         if (pc->green_closed) {
 684                             // finishing at the start anchor, close curve
 685                             spdc_pen_finish(pc, TRUE);
 686                         } else {
 687                             // finishing at some other anchor, finish curve but not close
 688                             spdc_pen_finish(pc, FALSE);
 689                         }
 690                         break;
 691                     case SP_PEN_CONTEXT_STOP:
 692                         /* This is allowed, if we just cancelled curve */
 693                         break;
 694                     default:
 695                         break;
 696                 }
 697                 pc->state = SP_PEN_CONTEXT_POINT;
 698                 ret = TRUE;
 699                 break;
 700             default:
 701                 break;
 702         }
 703
 704         if (pc->grab) {
 705             /* Release grab now */
 706             sp_canvas_item_ungrab(pc->grab, revent.time);
 707             pc->grab = NULL;
 708         }
 709
 710         ret = TRUE;
 711
 712         dc->green_closed = FALSE;
 713     }
 714
 715     return ret;
 716 }
 717
 718 static gint
 719 pen_handle_2button_press(SPPenContext *const pc)
 720 {
 721     gint ret = FALSE;
 722     if (pc->npoints != 0) {
 723         spdc_pen_finish(pc, FALSE);
 724         ret = TRUE;
 725     }
 726     return ret;
 727 }
 728
 729 void
 730 pen_redraw_all (SPPenContext *const pc)
 731 {
 732     // green
 733     if (pc->green_bpaths) {
 734         // remove old piecewise green canvasitems
 735         while (pc->green_bpaths) {
 736             gtk_object_destroy(GTK_OBJECT(pc->green_bpaths->data));
 737             pc->green_bpaths = g_slist_remove(pc->green_bpaths, pc->green_bpaths->data);
 738         }
 739         // one canvas bpath for all of green_curve
 740         SPCanvasItem *cshape = sp_canvas_bpath_new(sp_desktop_sketch(pc->desktop), pc->green_curve);
 741         sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cshape), pc->green_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
 742         sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(cshape), 0, SP_WIND_RULE_NONZERO);
 743
 744         pc->green_bpaths = g_slist_prepend(pc->green_bpaths, cshape);
 745     }
 746
 747     if (pc->green_anchor)
 748         SP_CTRL(pc->green_anchor->ctrl)->moveto(pc->green_anchor->dp);
 749
 750     sp_curve_reset(pc->red_curve);
 751     sp_curve_moveto(pc->red_curve, pc->p[0]);
 752     sp_curve_curveto(pc->red_curve, pc->p[1], pc->p[2], pc->p[3]);
 753     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
 754
 755     // handles
 756     if (pc->p[0] != pc->p[1]) {
 757         SP_CTRL(pc->c1)->moveto(pc->p[1]);
 758         sp_ctrlline_set_coords(SP_CTRLLINE(pc->cl1), pc->p[0], pc->p[1]);
 759         sp_canvas_item_show (pc->c1);
 760         sp_canvas_item_show (pc->cl1);
 761     } else {
 762         sp_canvas_item_hide (pc->c1);
 763         sp_canvas_item_hide (pc->cl1);
 764     }
 765
 766     NArtBpath *const bpath = sp_curve_last_bpath(pc->green_curve);
 767     if (bpath) {
 768         if (bpath->code == NR_CURVETO && NR::Point(bpath->x2, bpath->y2) != pc->p[0]) {
 769             SP_CTRL(pc->c0)->moveto(NR::Point(bpath->x2, bpath->y2));
 770             sp_ctrlline_set_coords(SP_CTRLLINE(pc->cl0), NR::Point(bpath->x2, bpath->y2), pc->p[0]);
 771             sp_canvas_item_show (pc->c0);
 772             sp_canvas_item_show (pc->cl0);
 773         } else {
 774             sp_canvas_item_hide (pc->c0);
 775             sp_canvas_item_hide (pc->cl0);
 776         }
 777     }
 778 }
 779
 780 void
 781 pen_lastpoint_move (SPPenContext *const pc, gdouble x, gdouble y)
 782 {
 783     if (pc->npoints != 5)
 784         return;
 785
 786     // green
 787     NArtBpath *const bpath = sp_curve_last_bpath(pc->green_curve);
 788     if (bpath) {
 789         if (bpath->code == NR_CURVETO) {
 790             bpath->x2 += x;
 791             bpath->y2 += y;
 792         }
 793         bpath->x3 += x;
 794         bpath->y3 += y;
 795     } else {
 796         // start anchor too
 797         if (pc->green_anchor) {
 798             pc->green_anchor->dp += NR::Point(x, y);
 799         }
 800     }
 801
 802     // red
 803     pc->p[0] += NR::Point(x, y);
 804     pc->p[1] += NR::Point(x, y);
 805     pen_redraw_all(pc);
 806 }
 807
 808 void
 809 pen_lastpoint_move_screen (SPPenContext *const pc, gdouble x, gdouble y)
 810 {
 811     pen_lastpoint_move (pc, x / pc->desktop->current_zoom(), y / pc->desktop->current_zoom());
 812 }
 813
 814 void
 815 pen_lastpoint_tocurve (SPPenContext *const pc)
 816 {
 817     if (pc->npoints != 5)
 818         return;
 819
 820     // red
 821     NArtBpath *const bpath = sp_curve_last_bpath(pc->green_curve);
 822     if (bpath && bpath->code == NR_CURVETO) {
 823         pc->p[1] = pc->p[0] + (NR::Point(bpath->x3, bpath->y3) - NR::Point(bpath->x2, bpath->y2));
 824     } else {
 825         pc->p[1] = pc->p[0] + (pc->p[3] - pc->p[0])*(1/3);
 826     }
 827
 828     pen_redraw_all(pc);
 829 }
 830
 831 void
 832 pen_lastpoint_toline (SPPenContext *const pc)
 833 {
 834     if (pc->npoints != 5)
 835         return;
 836
 837     pc->p[1] = pc->p[0];
 838
 839     pen_redraw_all(pc);
 840 }
 841
 842
 843 static gint
 844 pen_handle_key_press(SPPenContext *const pc, GdkEvent *event)
 845 {
 846     gint ret = FALSE;
 847     gdouble const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px
 848
 849     switch (get_group0_keyval (&event->key)) {
 850
 851         case GDK_Left: // move last point left
 852         case GDK_KP_Left:
 853         case GDK_KP_4:
 854             if (!MOD__CTRL) { // not ctrl
 855                 if (MOD__ALT) { // alt
 856                     if (MOD__SHIFT) pen_lastpoint_move_screen(pc, -10, 0); // shift
 857                     else pen_lastpoint_move_screen(pc, -1, 0); // no shift
 858                 }
 859                 else { // no alt
 860                     if (MOD__SHIFT) pen_lastpoint_move(pc, -10*nudge, 0); // shift
 861                     else pen_lastpoint_move(pc, -nudge, 0); // no shift
 862                 }
 863                 ret = TRUE;
 864             }
 865             break;
 866         case GDK_Up: // move last point up
 867         case GDK_KP_Up:
 868         case GDK_KP_8:
 869             if (!MOD__CTRL) { // not ctrl
 870                 if (MOD__ALT) { // alt
 871                     if (MOD__SHIFT) pen_lastpoint_move_screen(pc, 0, 10); // shift
 872                     else pen_lastpoint_move_screen(pc, 0, 1); // no shift
 873                 }
 874                 else { // no alt
 875                     if (MOD__SHIFT) pen_lastpoint_move(pc, 0, 10*nudge); // shift
 876                     else pen_lastpoint_move(pc, 0, nudge); // no shift
 877                 }
 878                 ret = TRUE;
 879             }
 880             break;
 881         case GDK_Right: // move last point right
 882         case GDK_KP_Right:
 883         case GDK_KP_6:
 884             if (!MOD__CTRL) { // not ctrl
 885                 if (MOD__ALT) { // alt
 886                     if (MOD__SHIFT) pen_lastpoint_move_screen(pc, 10, 0); // shift
 887                     else pen_lastpoint_move_screen(pc, 1, 0); // no shift
 888                 }
 889                 else { // no alt
 890                     if (MOD__SHIFT) pen_lastpoint_move(pc, 10*nudge, 0); // shift
 891                     else pen_lastpoint_move(pc, nudge, 0); // no shift
 892                 }
 893                 ret = TRUE;
 894             }
 895             break;
 896         case GDK_Down: // move last point down
 897         case GDK_KP_Down:
 898         case GDK_KP_2:
 899             if (!MOD__CTRL) { // not ctrl
 900                 if (MOD__ALT) { // alt
 901                     if (MOD__SHIFT) pen_lastpoint_move_screen(pc, 0, -10); // shift
 902                     else pen_lastpoint_move_screen(pc, 0, -1); // no shift
 903                 }
 904                 else { // no alt
 905                     if (MOD__SHIFT) pen_lastpoint_move(pc, 0, -10*nudge); // shift
 906                     else pen_lastpoint_move(pc, 0, -nudge); // no shift
 907                 }
 908                 ret = TRUE;
 909             }
 910             break;
 911
 912         case GDK_U:
 913         case GDK_u:
 914             if (MOD__SHIFT_ONLY) {
 915                 pen_lastpoint_tocurve(pc);
 916                 ret = TRUE;
 917             }
 918             break;
 919         case GDK_L:
 920         case GDK_l:
 921             if (MOD__SHIFT_ONLY) {
 922                 pen_lastpoint_toline(pc);
 923                 ret = TRUE;
 924             }
 925             break;
 926
 927         case GDK_Return:
 928         case GDK_KP_Enter:
 929             if (pc->npoints != 0) {
 930                 spdc_pen_finish(pc, FALSE);
 931                 ret = TRUE;
 932             }
 933             break;
 934         case GDK_Escape:
 935             if (pc->npoints != 0) {
 936                 // if drawing, cancel, otherwise pass it up for deselecting
 937                 pen_cancel (pc);
 938                 ret = TRUE;
 939             }
 940             break;
 941         case GDK_z:
 942         case GDK_Z:
 943             if (MOD__CTRL_ONLY && pc->npoints != 0) {
 944                 // if drawing, cancel, otherwise pass it up for undo
 945                 pen_cancel (pc);
 946                 ret = TRUE;
 947             }
 948             break;
 949         case GDK_BackSpace:
 950         case GDK_Delete:
 951         case GDK_KP_Delete:
 952             if (sp_curve_is_empty(pc->green_curve)) {
 953                 pen_cancel (pc);
 954                 ret = TRUE;
 955             } else {
 956                 /* Reset red curve */
 957                 sp_curve_reset(pc->red_curve);
 958                 /* Destroy topmost green bpath */
 959                 if (pc->green_bpaths) {
 960                     if (pc->green_bpaths->data)
 961                         gtk_object_destroy(GTK_OBJECT(pc->green_bpaths->data));
 962                     pc->green_bpaths = g_slist_remove(pc->green_bpaths, pc->green_bpaths->data);
 963                 }
 964                 /* Get last segment */
 965                 NArtBpath const *const p = SP_CURVE_BPATH(pc->green_curve);
 966                 gint const e = SP_CURVE_LENGTH(pc->green_curve);
 967                 if ( e < 2 ) {
 968                     g_warning("Green curve length is %d", e);
 969                     break;
 970                 }
 971                 pc->p[0] = p[e - 2].c(3);
 972                 if (p[e - 1].code == NR_CURVETO) {
 973                     pc->p[1] = p[e - 1].c(1);
 974                 } else {
 975                     pc->p[1] = pc->p[0];
 976                 }
 977                 NR::Point const pt(( pc->npoints < 4
 978                                      ? p[e - 1].c(3)
 979                                      : pc->p[3] ));
 980                 pc->npoints = 2;
 981                 sp_curve_backspace(pc->green_curve);
 982                 sp_canvas_item_hide(pc->c0);
 983                 sp_canvas_item_hide(pc->c1);
 984                 sp_canvas_item_hide(pc->cl0);
 985                 sp_canvas_item_hide(pc->cl1);
 986                 pc->state = SP_PEN_CONTEXT_POINT;
 987                 spdc_pen_set_subsequent_point(pc, pt, true);
 988                 ret = TRUE;
 989             }
 990             break;
 991         default:
 992             break;
 993     }
 994     return ret;
 995 }
 996
 997 static void
 998 spdc_reset_colors(SPPenContext *pc)
 999 {
1000     /* Red */
1001     sp_curve_reset(pc->red_curve);
1002     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), NULL);
1003     /* Blue */
1004     sp_curve_reset(pc->blue_curve);
1005     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->blue_bpath), NULL);
1006     /* Green */
1007     while (pc->green_bpaths) {
1008         gtk_object_destroy(GTK_OBJECT(pc->green_bpaths->data));
1009         pc->green_bpaths = g_slist_remove(pc->green_bpaths, pc->green_bpaths->data);
1010     }
1011     sp_curve_reset(pc->green_curve);
1012     if (pc->green_anchor) {
1013         pc->green_anchor = sp_draw_anchor_destroy(pc->green_anchor);
1014     }
1015     pc->sa = NULL;
1016     pc->ea = NULL;
1017     pc->npoints = 0;
1018     pc->red_curve_is_valid = false;
1019 }
1020
1021
1022 static void
1023 spdc_pen_set_initial_point(SPPenContext *const pc, NR::Point const p)
1024 {
1025     g_assert( pc->npoints == 0 );
1026
1027     pc->p[0] = p;
1028     pc->p[1] = p;
1029     pc->npoints = 2;
1030     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), NULL);
1031
1032     sp_canvas_force_full_redraw_after_interruptions(pc->desktop->canvas, 5);
1033 }
1034
1035 static void
1036 spdc_pen_set_subsequent_point(SPPenContext *const pc, NR::Point const p, bool statusbar)
1037 {
1038     g_assert( pc->npoints != 0 );
1039     /* todo: Check callers to see whether 2 <= npoints is guaranteed. */
1040
1041     pc->p[2] = p;
1042     pc->p[3] = p;
1043     pc->p[4] = p;
1044     pc->npoints = 5;
1045     sp_curve_reset(pc->red_curve);
1046     sp_curve_moveto(pc->red_curve, pc->p[0]);
1047     bool is_curve;
1048     if ( (pc->onlycurves)
1049          || ( pc->p[1] != pc->p[0] ) )
1050     {
1051         sp_curve_curveto(pc->red_curve, pc->p[1], p, p);
1052         is_curve = true;
1053     } else {
1054         sp_curve_lineto(pc->red_curve, p);
1055         is_curve = false;
1056     }
1057
1058     sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
1059
1060     if (statusbar) {
1061         // status text
1062         SPDesktop *desktop = SP_EVENT_CONTEXT(pc)->desktop;
1063         NR::Point rel = p - pc->p[0];
1064         GString *dist = SP_PX_TO_METRIC_STRING(NR::L2(rel), desktop->namedview->getDefaultMetric());
1065         double angle = atan2(rel[NR::Y], rel[NR::X]) * 180 / M_PI;
1066         if (prefs_get_int_attribute("options.compassangledisplay", "value", 0) != 0)
1067             angle = angle_to_compass (angle);
1068         pc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>%s</b>: angle %3.2f&#176;, distance %s; with <b>Ctrl</b> to snap angle, <b>Enter</b> to finish the path"), is_curve? "Curve segment" : "Line segment", angle, dist->str);
1069         g_string_free(dist, FALSE);
1070     }
1071 }
1072
1073 static void
1074 spdc_pen_set_ctrl(SPPenContext *const pc, NR::Point const p, guint const state)
1075 {
1076     sp_canvas_item_show(pc->c1);
1077     sp_canvas_item_show(pc->cl1);
1078
1079     if ( pc->npoints == 2 ) {
1080         pc->p[1] = p;
1081         sp_canvas_item_hide(pc->c0);
1082         sp_canvas_item_hide(pc->cl0);
1083         SP_CTRL(pc->c1)->moveto(pc->p[1]);
1084         sp_ctrlline_set_coords(SP_CTRLLINE(pc->cl1), pc->p[0], pc->p[1]);
1085
1086         // status text
1087         SPDesktop *desktop = SP_EVENT_CONTEXT(pc)->desktop;
1088         NR::Point rel = p - pc->p[0];
1089         GString *dist = SP_PX_TO_METRIC_STRING(NR::L2(rel), desktop->namedview->getDefaultMetric());
1090         double angle = atan2(rel[NR::Y], rel[NR::X]) * 180 / M_PI;
1091         if (prefs_get_int_attribute("options.compassangledisplay", "value", 0) != 0)
1092             angle = angle_to_compass (angle);
1093         pc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>Curve handle</b>: angle %3.2f&#176;, length %s; with <b>Ctrl</b> to snap angle"), angle, dist->str);
1094         g_string_free(dist, FALSE);
1095
1096     } else if ( pc->npoints == 5 ) {
1097         pc->p[4] = p;
1098         sp_canvas_item_show(pc->c0);
1099         sp_canvas_item_show(pc->cl0);
1100         bool is_symm = false;
1101         if ( ( ( pc->mode == SP_PEN_CONTEXT_MODE_CLICK ) && ( state & GDK_CONTROL_MASK ) ) ||
1102              ( ( pc->mode == SP_PEN_CONTEXT_MODE_DRAG ) &&  !( state & GDK_SHIFT_MASK  ) ) ) {
1103             NR::Point delta = p - pc->p[3];
1104             pc->p[2] = pc->p[3] - delta;
1105             is_symm = true;
1106             sp_curve_reset(pc->red_curve);
1107             sp_curve_moveto(pc->red_curve, pc->p[0]);
1108             sp_curve_curveto(pc->red_curve, pc->p[1], pc->p[2], pc->p[3]);
1109             sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
1110         }
1111         SP_CTRL(pc->c0)->moveto(pc->p[2]);
1112         sp_ctrlline_set_coords(SP_CTRLLINE(pc->cl0), pc->p[3], pc->p[2]);
1113         SP_CTRL(pc->c1)->moveto(pc->p[4]);
1114         sp_ctrlline_set_coords(SP_CTRLLINE(pc->cl1), pc->p[3], pc->p[4]);
1115
1116         // status text
1117         SPDesktop *desktop = SP_EVENT_CONTEXT(pc)->desktop;
1118         NR::Point rel = p - pc->p[3];
1119         GString *dist = SP_PX_TO_METRIC_STRING(NR::L2(rel), desktop->namedview->getDefaultMetric());
1120         double angle = atan2(rel[NR::Y], rel[NR::X]) * 180 / M_PI;
1121         if (prefs_get_int_attribute("options.compassangledisplay", "value", 0) != 0)
1122             angle = angle_to_compass (angle);
1123         pc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>%s</b>: angle %3.2f&#176;, length %s; with <b>Ctrl</b> to snap angle, with <b>Shift</b> to move this handle only"), is_symm? "Curve handle, symmetric" : "Curve handle", angle, dist->str);
1124         g_string_free(dist, FALSE);
1125
1126     } else {
1127         g_warning("Something bad happened - npoints is %d", pc->npoints);
1128     }
1129 }
1130
1131 static void
1132 spdc_pen_finish_segment(SPPenContext *const pc, NR::Point const p, guint const state)
1133 {
1134     if (!sp_curve_empty(pc->red_curve)) {
1135         sp_curve_append_continuous(pc->green_curve, pc->red_curve, 0.0625);
1136         SPCurve *curve = sp_curve_copy(pc->red_curve);
1137         /// \todo fixme:
1138         SPCanvasItem *cshape = sp_canvas_bpath_new(sp_desktop_sketch(pc->desktop), curve);
1139         sp_curve_unref(curve);
1140         sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cshape), pc->green_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
1141
1142         pc->green_bpaths = g_slist_prepend(pc->green_bpaths, cshape);
1143
1144         pc->p[0] = pc->p[3];
1145         pc->p[1] = pc->p[4];
1146         pc->npoints = 2;
1147
1148         sp_curve_reset(pc->red_curve);
1149     }
1150 }
1151
1152 static void
1153 spdc_pen_finish(SPPenContext *const pc, gboolean const closed)
1154 {
1155     pen_disable_events(pc);
1156
1157     SPDesktop *const desktop = pc->desktop;
1158     pc->_message_context->clear();
1159     desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Drawing finished"));
1160
1161     sp_curve_reset(pc->red_curve);
1162     spdc_concat_colors_and_flush(pc, closed);
1163     pc->sa = NULL;
1164     pc->ea = NULL;
1165
1166     pc->npoints = 0;
1167     pc->state = SP_PEN_CONTEXT_POINT;
1168
1169     sp_canvas_item_hide(pc->c0);
1170     sp_canvas_item_hide(pc->c1);
1171     sp_canvas_item_hide(pc->cl0);
1172     sp_canvas_item_hide(pc->cl1);
1173
1174     if (pc->green_anchor) {
1175         pc->green_anchor = sp_draw_anchor_destroy(pc->green_anchor);
1176     }
1177
1178
1179     sp_canvas_end_forced_full_redraws(pc->desktop->canvas);
1180
1181     pen_enable_events(pc);
1182 }
1183
1184 static void
1185 pen_disable_events(SPPenContext *const pc) {
1186   pc->events_disabled++;
1187 }
1188
1189 static void
1190 pen_enable_events(SPPenContext *const pc) {
1191   g_return_if_fail(pc->events_disabled != 0);
1192
1193   pc->events_disabled--;
1194 }
1195
1196 /*
1197   Local Variables:
1198   mode:c++
1199   c-file-style:"stroustrup"
1200   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1201   indent-tabs-mode:nil
1202   fill-column:99
1203   End:
1204 */
1205 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :