src/knot.cpp

   1 #define __SP_KNOT_C__
   2
   3 /** \file
   4  * SPKnot implementation
   5  *
   6  * Authors:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *   bulia byak <buliabyak@users.sf.net>
   9  *
  10  * Copyright (C) 1999-2005 authors
  11  * Copyright (C) 2001-2002 Ximian, Inc.
  12  *
  13  * Released under GNU GPL, read the file 'COPYING' for more information
  14  */
  15
  16 #ifdef HAVE_CONFIG_H
  17 # include <config.h>
  18 #endif
  19 #include <gdk/gdkkeysyms.h>
  20 #include <glibmm/i18n.h>
  21 #include "helper/sp-marshal.h"
  22 #include "display/sodipodi-ctrl.h"
  23 #include "desktop.h"
  24 #include "desktop-handles.h"
  25 #include "knot.h"
  26 #include "document.h"
  27 #include "prefs-utils.h"
  28 #include "message-stack.h"
  29 #include "message-context.h"
  30 #include "event-context.h"
  31
  32
  33 #define KNOT_EVENT_MASK (GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | \
  34                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | \
  35                          GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK)
  36
  37 static bool nograb = false;
  38
  39 static bool grabbed = FALSE;
  40 static bool moved = FALSE;
  41
  42 static gint xp = 0, yp = 0; // where drag started
  43 static gint tolerance = 0;
  44 static bool within_tolerance = false;
  45
  46 static bool transform_escaped = false; // true iff resize or rotate was cancelled by esc.
  47
  48 enum {
  49     EVENT,
  50     CLICKED,
  51     DOUBLECLICKED,
  52     GRABBED,
  53     UNGRABBED,
  54     MOVED,
  55     REQUEST,
  56     DISTANCE,
  57     LAST_SIGNAL
  58 };
  59
  60 static void sp_knot_class_init(SPKnotClass *klass);
  61 static void sp_knot_init(SPKnot *knot);
  62 static void sp_knot_dispose(GObject *object);
  63
  64 static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot);
  65 static void sp_knot_set_flag(SPKnot *knot, guint flag, bool set);
  66 static void sp_knot_set_ctrl_state(SPKnot *knot);
  67
  68 static GObjectClass *parent_class;
  69 static guint knot_signals[LAST_SIGNAL] = { 0 };
  70
  71 /**
  72  * Registers SPKnot class and returns its type number.
  73  */
  74 GType sp_knot_get_type()
  75 {
  76     static GType type = 0;
  77     if (!type) {
  78         GTypeInfo info = {
  79             sizeof(SPKnotClass),
  80             NULL,       /* base_init */
  81             NULL,       /* base_finalize */
  82             (GClassInitFunc) sp_knot_class_init,
  83             NULL,       /* class_finalize */
  84             NULL,       /* class_data */
  85             sizeof (SPKnot),
  86             16, /* n_preallocs */
  87             (GInstanceInitFunc) sp_knot_init,
  88             NULL
  89         };
  90         type = g_type_register_static (G_TYPE_OBJECT, "SPKnot", &info, (GTypeFlags) 0);
  91     }
  92     return type;
  93 }
  94
  95 /**
  96  * SPKnot vtable initialization.
  97  */
  98 static void sp_knot_class_init(SPKnotClass *klass)
  99 {
 100     GObjectClass *object_class = (GObjectClass *) klass;
 101
 102     parent_class = (GObjectClass*) g_type_class_peek_parent(klass);
 103
 104     object_class->dispose = sp_knot_dispose;
 105
 106     knot_signals[EVENT] = g_signal_new("event",
 107                                        G_TYPE_FROM_CLASS(klass),
 108                                        G_SIGNAL_RUN_LAST,
 109                                        G_STRUCT_OFFSET(SPKnotClass, event),
 110                                        NULL, NULL,
 111                                        sp_marshal_BOOLEAN__POINTER,
 112                                        G_TYPE_BOOLEAN, 1,
 113                                        GDK_TYPE_EVENT);
 114
 115     knot_signals[CLICKED] = g_signal_new("clicked",
 116                                          G_TYPE_FROM_CLASS(klass),
 117                                          G_SIGNAL_RUN_FIRST,
 118                                          G_STRUCT_OFFSET(SPKnotClass, clicked),
 119                                          NULL, NULL,
 120                                          sp_marshal_NONE__UINT,
 121                                          G_TYPE_NONE, 1,
 122                                          G_TYPE_UINT);
 123
 124     knot_signals[DOUBLECLICKED] = g_signal_new("doubleclicked",
 125                                                G_TYPE_FROM_CLASS(klass),
 126                                                G_SIGNAL_RUN_FIRST,
 127                                                G_STRUCT_OFFSET(SPKnotClass, doubleclicked),
 128                                                NULL, NULL,
 129                                                sp_marshal_NONE__UINT,
 130                                                G_TYPE_NONE, 1,
 131                                                G_TYPE_UINT);
 132
 133     knot_signals[GRABBED] = g_signal_new("grabbed",
 134                                           G_TYPE_FROM_CLASS(klass),
 135                                           G_SIGNAL_RUN_FIRST,
 136                                           G_STRUCT_OFFSET(SPKnotClass, grabbed),
 137                                           NULL, NULL,
 138                                           sp_marshal_NONE__UINT,
 139                                           G_TYPE_NONE, 1,
 140                                           G_TYPE_UINT);
 141
 142     knot_signals[UNGRABBED] = g_signal_new("ungrabbed",
 143                                             G_TYPE_FROM_CLASS(klass),
 144                                             G_SIGNAL_RUN_FIRST,
 145                                             G_STRUCT_OFFSET(SPKnotClass, ungrabbed),
 146                                             NULL, NULL,
 147                                             sp_marshal_NONE__UINT,
 148                                             G_TYPE_NONE, 1,
 149                                             G_TYPE_UINT);
 150
 151     knot_signals[MOVED] = g_signal_new("moved",
 152                                         G_TYPE_FROM_CLASS(klass),
 153                                         G_SIGNAL_RUN_FIRST,
 154                                         G_STRUCT_OFFSET(SPKnotClass, moved),
 155                                         NULL, NULL,
 156                                         sp_marshal_NONE__POINTER_UINT,
 157                                         G_TYPE_NONE, 2,
 158                                         G_TYPE_POINTER, G_TYPE_UINT);
 159
 160     knot_signals[REQUEST] = g_signal_new("request",
 161                                          G_TYPE_FROM_CLASS(klass),
 162                                          G_SIGNAL_RUN_LAST,
 163                                          G_STRUCT_OFFSET(SPKnotClass, request),
 164                                          NULL, NULL,
 165                                          sp_marshal_BOOLEAN__POINTER_UINT,
 166                                          G_TYPE_BOOLEAN, 2,
 167                                          G_TYPE_POINTER, G_TYPE_UINT);
 168
 169     knot_signals[DISTANCE] = g_signal_new("distance",
 170                                            G_TYPE_FROM_CLASS(klass),
 171                                            G_SIGNAL_RUN_LAST,
 172                                            G_STRUCT_OFFSET(SPKnotClass, distance),
 173                                            NULL, NULL,
 174                                            sp_marshal_DOUBLE__POINTER_UINT,
 175                                            G_TYPE_DOUBLE, 2,
 176                                            G_TYPE_POINTER, G_TYPE_UINT);
 177
 178     const gchar *nograbenv = getenv("INKSCAPE_NO_GRAB");
 179     nograb = (nograbenv && *nograbenv && (*nograbenv != '0'));
 180 }
 181
 182 /**
 183  * Callback for SPKnot initialization.
 184  */
 185 static void sp_knot_init(SPKnot *knot)
 186 {
 187     knot->desktop = NULL;
 188     knot->item = NULL;
 189     knot->flags = 0;
 190
 191     knot->size = 8;
 192     knot->pos = NR::Point(0, 0);
 193     knot->grabbed_rel_pos = NR::Point(0, 0);
 194     knot->anchor = GTK_ANCHOR_CENTER;
 195     knot->shape = SP_KNOT_SHAPE_SQUARE;
 196     knot->mode = SP_KNOT_MODE_XOR;
 197     knot->tip = NULL;
 198     knot->_event_handler_id = 0;
 199
 200     knot->fill[SP_KNOT_STATE_NORMAL] = 0xffffff00;
 201     knot->fill[SP_KNOT_STATE_MOUSEOVER] = 0xff0000ff;
 202     knot->fill[SP_KNOT_STATE_DRAGGING] = 0x0000ffff;
 203
 204     knot->stroke[SP_KNOT_STATE_NORMAL] = 0x01000000;
 205     knot->stroke[SP_KNOT_STATE_MOUSEOVER] = 0x01000000;
 206     knot->stroke[SP_KNOT_STATE_DRAGGING] = 0x01000000;
 207
 208     knot->image[SP_KNOT_STATE_NORMAL] = NULL;
 209     knot->image[SP_KNOT_STATE_MOUSEOVER] = NULL;
 210     knot->image[SP_KNOT_STATE_DRAGGING] = NULL;
 211
 212     knot->cursor[SP_KNOT_STATE_NORMAL] = NULL;
 213     knot->cursor[SP_KNOT_STATE_MOUSEOVER] = NULL;
 214     knot->cursor[SP_KNOT_STATE_DRAGGING] = NULL;
 215
 216     knot->saved_cursor = NULL;
 217     knot->pixbuf = NULL;
 218 }
 219
 220 /**
 221  * Called before SPKnot destruction.
 222  */
 223 static void sp_knot_dispose(GObject *object)
 224 {
 225     SPKnot *knot = (SPKnot *) object;
 226
 227     if ((knot->flags & SP_KNOT_GRABBED) && gdk_pointer_is_grabbed ()) {
 228         // This happens e.g. when deleting a node in node tool while dragging it
 229         gdk_pointer_ungrab (GDK_CURRENT_TIME);
 230     }
 231
 232     if (knot->_event_handler_id > 0)
 233         {
 234         g_signal_handler_disconnect(G_OBJECT (knot->item), knot->_event_handler_id);
 235         knot->_event_handler_id = 0;
 236         }
 237
 238     if (knot->item) {
 239         gtk_object_destroy (GTK_OBJECT (knot->item));
 240         knot->item = NULL;
 241     }
 242
 243     for (gint i = 0; i < SP_KNOT_VISIBLE_STATES; i++) {
 244         if (knot->cursor[i]) {
 245             gdk_cursor_unref(knot->cursor[i]);
 246             knot->cursor[i] = NULL;
 247         }
 248     }
 249
 250     if (knot->tip) {
 251         g_free(knot->tip);
 252         knot->tip = NULL;
 253     }
 254
 255     if (((GObjectClass *) (parent_class))->dispose) {
 256         (* ((GObjectClass *) (parent_class))->dispose) (object);
 257     }
 258 }
 259
 260 /**
 261  * Update knot for dragging and tell canvas an item was grabbed.
 262  */
 263 void sp_knot_start_dragging(SPKnot *knot, NR::Point p, gint x, gint y, guint32 etime)
 264 {
 265     // save drag origin
 266     xp = x;
 267     yp = y;
 268     within_tolerance = true;
 269
 270     knot->grabbed_rel_pos = p - knot->pos;
 271     knot->drag_origin = knot->pos;
 272     if (!nograb) {
 273         sp_canvas_item_grab(knot->item,
 274                             KNOT_EVENT_MASK,
 275                             knot->cursor[SP_KNOT_STATE_DRAGGING],
 276                             etime);
 277     }
 278     sp_knot_set_flag(knot, SP_KNOT_GRABBED, TRUE);
 279     grabbed = TRUE;
 280 }
 281
 282 /**
 283  * Called to handle events on knots.
 284  */
 285 static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
 286 {
 287     g_assert(knot != NULL);
 288     g_assert(SP_IS_KNOT(knot));
 289
 290     g_object_ref(G_OBJECT(knot));
 291     tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
 292
 293     gboolean consumed = FALSE;
 294
 295     /* Run client universal event handler, if present */
 296
 297     g_signal_emit(G_OBJECT(knot), knot_signals[EVENT], 0, event, &consumed);
 298
 299     if (consumed) {
 300         return TRUE;
 301     }
 302
 303     switch (event->type) {
 304         case GDK_2BUTTON_PRESS:
 305             if (event->button.button == 1) {
 306                 g_signal_emit(G_OBJECT(knot), knot_signals[DOUBLECLICKED], 0, event->button.state);
 307
 308                 grabbed = FALSE;
 309                 moved = FALSE;
 310                 consumed = TRUE;
 311             }
 312             break;
 313         case GDK_BUTTON_PRESS:
 314             if (event->button.button == 1) {
 315                 NR::Point const p = knot->desktop->w2d(NR::Point(event->button.x, event->button.y));
 316                 sp_knot_start_dragging(knot, p, (gint) event->button.x, (gint) event->button.y, event->button.time);
 317                 consumed = TRUE;
 318             }
 319             break;
 320         case GDK_BUTTON_RELEASE:
 321             if (event->button.button == 1) {
 322                 if (transform_escaped) {
 323                     transform_escaped = false;
 324                     consumed = TRUE;
 325                 } else {
 326                     sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
 327                     if (!nograb) {
 328                         sp_canvas_item_ungrab(knot->item, event->button.time);
 329                     }
 330                     if (moved) {
 331                         sp_knot_set_flag(knot,
 332                                          SP_KNOT_DRAGGING,
 333                                          FALSE);
 334                         g_signal_emit(G_OBJECT (knot),
 335                                       knot_signals[UNGRABBED], 0,
 336                                       event->button.state);
 337                     } else {
 338                         g_signal_emit(G_OBJECT (knot),
 339                                       knot_signals[CLICKED], 0,
 340                                       event->button.state);
 341                     }
 342                     grabbed = FALSE;
 343                     moved = FALSE;
 344                     consumed = TRUE;
 345                 }
 346             }
 347             break;
 348         case GDK_MOTION_NOTIFY:
 349             if (grabbed) {
 350                 consumed = TRUE;
 351
 352                 if ( within_tolerance
 353                      && ( abs( (gint) event->motion.x - xp ) < tolerance )
 354                      && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
 355                     break; // do not drag if we're within tolerance from origin
 356                 }
 357
 358                 // Once the user has moved farther than tolerance from the original location
 359                 // (indicating they intend to move the object, not click), then always process the
 360                 // motion notify coordinates as given (no snapping back to origin)
 361                 within_tolerance = false;
 362
 363                 if (!moved) {
 364                     g_signal_emit(G_OBJECT (knot),
 365                                   knot_signals[GRABBED], 0,
 366                                   event->motion.state);
 367                     sp_knot_set_flag(knot,
 368                                      SP_KNOT_DRAGGING,
 369                                      TRUE);
 370                 }
 371                 NR::Point const motion_w(event->motion.x, event->motion.y);
 372                 NR::Point const motion_dt = knot->desktop->w2d(motion_w);
 373                 NR::Point p = motion_dt - knot->grabbed_rel_pos;
 374                 sp_knot_request_position (knot, &p, event->motion.state);
 375                 knot->desktop->scroll_to_point (&motion_dt);
 376                 moved = TRUE;
 377             }
 378             break;
 379         case GDK_ENTER_NOTIFY:
 380             sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, TRUE);
 381             sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
 382
 383             if (knot->tip) {
 384                 knot->desktop->event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, knot->tip);
 385             }
 386
 387             grabbed = FALSE;
 388             moved = FALSE;
 389             consumed = TRUE;
 390             break;
 391         case GDK_LEAVE_NOTIFY:
 392             sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, FALSE);
 393             sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
 394
 395             if (knot->tip) {
 396                 knot->desktop->event_context->defaultMessageContext()->clear();
 397             }
 398
 399             grabbed = FALSE;
 400             moved = FALSE;
 401
 402             consumed = TRUE;
 403             break;
 404         case GDK_KEY_PRESS: // keybindings for knot
 405             switch (get_group0_keyval(&event->key)) {
 406                 case GDK_Escape:
 407                     sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
 408                     if (!nograb) {
 409                         sp_canvas_item_ungrab(knot->item, event->button.time);
 410                     }
 411                     if (moved) {
 412                         sp_knot_set_flag(knot,
 413                                          SP_KNOT_DRAGGING,
 414                                          FALSE);
 415                         g_signal_emit(G_OBJECT(knot),
 416                                       knot_signals[UNGRABBED], 0,
 417                                       event->button.state);
 418                         sp_document_undo(SP_DT_DOCUMENT(knot->desktop));
 419                         knot->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Node or handle drag canceled."));
 420                         transform_escaped = true;
 421                         consumed = TRUE;
 422                     }
 423                     grabbed = FALSE;
 424                     moved = FALSE;
 425                     break;
 426                 default:
 427                     consumed = FALSE;
 428                     break;
 429             }
 430             break;
 431         default:
 432             break;
 433     }
 434
 435     g_object_unref(G_OBJECT(knot));
 436
 437     return consumed;
 438 }
 439
 440 /**
 441  * Return new knot object.
 442  */
 443 SPKnot *sp_knot_new(SPDesktop *desktop, const gchar *tip)
 444 {
 445     g_return_val_if_fail(desktop != NULL, NULL);
 446
 447     SPKnot * knot = (SPKnot*) g_object_new(SP_TYPE_KNOT, 0);
 448
 449     knot->desktop = desktop;
 450     knot->flags = SP_KNOT_VISIBLE;
 451     if (tip) {
 452         knot->tip = g_strdup (tip);
 453     }
 454
 455     knot->item = sp_canvas_item_new(SP_DT_CONTROLS (desktop),
 456                                     SP_TYPE_CTRL,
 457                                     "anchor", GTK_ANCHOR_CENTER,
 458                                     "size", 8.0,
 459                                     "filled", TRUE,
 460                                     "fill_color", 0xffffff00,
 461                                     "stroked", TRUE,
 462                                     "stroke_color", 0x01000000,
 463                                     "mode", SP_KNOT_MODE_XOR,
 464                                     NULL);
 465
 466     knot->_event_handler_id = gtk_signal_connect(GTK_OBJECT(knot->item), "event",
 467                                                  GTK_SIGNAL_FUNC(sp_knot_handler), knot);
 468
 469     return knot;
 470 }
 471
 472 /**
 473  * Show knot on its canvas.
 474  */
 475 void sp_knot_show(SPKnot *knot)
 476 {
 477     g_return_if_fail(knot != NULL);
 478     g_return_if_fail(SP_IS_KNOT (knot));
 479
 480     sp_knot_set_flag(knot, SP_KNOT_VISIBLE, TRUE);
 481 }
 482
 483 /**
 484  * Hide knot on its canvas.
 485  */
 486 void sp_knot_hide(SPKnot *knot)
 487 {
 488     g_return_if_fail(knot != NULL);
 489     g_return_if_fail(SP_IS_KNOT(knot));
 490
 491     sp_knot_set_flag(knot, SP_KNOT_VISIBLE, FALSE);
 492 }
 493
 494 /**
 495  * Request or set new position for knot.
 496  */
 497 void sp_knot_request_position(SPKnot *knot, NR::Point *p, guint state)
 498 {
 499     g_return_if_fail(knot != NULL);
 500     g_return_if_fail(SP_IS_KNOT(knot));
 501
 502     gboolean done = FALSE;
 503
 504     g_signal_emit(G_OBJECT (knot),
 505                   knot_signals[REQUEST], 0,
 506                   p,
 507                   state,
 508                   &done);
 509
 510     /* If user did not complete, we simply move knot to new position */
 511
 512     if (!done) {
 513         sp_knot_set_position (knot, p, state);
 514     }
 515 }
 516
 517 /**
 518  * Return distance of point to knot's position; unused.
 519  */
 520 gdouble sp_knot_distance(SPKnot * knot, NR::Point *p, guint state)
 521 {
 522     g_return_val_if_fail(knot != NULL, 1e18);
 523     g_return_val_if_fail(SP_IS_KNOT(knot), 1e18);
 524
 525     gdouble distance = NR::L2(*p - knot->pos);
 526
 527     g_signal_emit(G_OBJECT(knot),
 528                   knot_signals[DISTANCE], 0,
 529                   p,
 530                   state,
 531                   &distance);
 532
 533     return distance;
 534 }
 535
 536 /**
 537  * Move knot to new position.
 538  */
 539 void sp_knot_set_position(SPKnot *knot, NR::Point *p, guint state)
 540 {
 541     g_return_if_fail(knot != NULL);
 542     g_return_if_fail(SP_IS_KNOT (knot));
 543
 544     knot->pos = *p;
 545
 546     if (knot->item) {
 547         SP_CTRL(knot->item)->moveto (*p);
 548     }
 549
 550     g_signal_emit(G_OBJECT (knot),
 551                   knot_signals[MOVED], 0,
 552                   p,
 553                   state);
 554 }
 555
 556 /**
 557  * Move knot to new position, without emitting a MOVED signal.
 558  */
 559 void sp_knot_moveto(SPKnot *knot, NR::Point *p)
 560 {
 561     g_return_if_fail(knot != NULL);
 562     g_return_if_fail(SP_IS_KNOT(knot));
 563
 564     knot->pos = *p;
 565
 566     if (knot->item) {
 567         SP_CTRL(knot->item)->moveto (*p);
 568     }
 569 }
 570
 571 /**
 572  * Returns position of knot.
 573  */
 574 NR::Point sp_knot_position(SPKnot const *knot)
 575 {
 576     g_assert(knot != NULL);
 577     g_assert(SP_IS_KNOT (knot));
 578
 579     return knot->pos;
 580 }
 581
 582 /**
 583  * Set flag in knot, with side effects.
 584  */
 585 static void sp_knot_set_flag(SPKnot *knot, guint flag, bool set)
 586 {
 587     g_assert(knot != NULL);
 588     g_assert(SP_IS_KNOT(knot));
 589
 590     if (set) {
 591         knot->flags |= flag;
 592     } else {
 593         knot->flags &= ~flag;
 594     }
 595
 596     switch (flag) {
 597         case SP_KNOT_VISIBLE:
 598             if (set) {
 599                 sp_canvas_item_show(knot->item);
 600             } else {
 601                 sp_canvas_item_hide(knot->item);
 602             }
 603             break;
 604         case SP_KNOT_MOUSEOVER:
 605         case SP_KNOT_DRAGGING:
 606             sp_knot_set_ctrl_state(knot);
 607             break;
 608         case SP_KNOT_GRABBED:
 609             break;
 610         default:
 611             g_assert_not_reached();
 612             break;
 613     }
 614 }
 615
 616 /**
 617  * Update knot's pixbuf and set its control state.
 618  */
 619 void sp_knot_update_ctrl(SPKnot *knot)
 620 {
 621     if (!knot->item) {
 622         return;
 623     }
 624
 625     gtk_object_set(GTK_OBJECT(knot->item), "shape", knot->shape, NULL);
 626     gtk_object_set(GTK_OBJECT(knot->item), "mode", knot->mode, NULL);
 627     gtk_object_set(GTK_OBJECT(knot->item), "size", (gdouble) knot->size, NULL);
 628     gtk_object_set(GTK_OBJECT(knot->item), "anchor", knot->anchor, NULL);
 629     if (knot->pixbuf) {
 630         gtk_object_set(GTK_OBJECT (knot->item), "pixbuf", knot->pixbuf, NULL);
 631     }
 632
 633     sp_knot_set_ctrl_state(knot);
 634 }
 635
 636 /**
 637  * Set knot control state (dragging/mouseover/normal).
 638  */
 639 static void sp_knot_set_ctrl_state(SPKnot *knot)
 640 {
 641     if (knot->flags & SP_KNOT_DRAGGING) {
 642         gtk_object_set(GTK_OBJECT (knot->item),
 643                        "fill_color",
 644                        knot->fill[SP_KNOT_STATE_DRAGGING],
 645                        NULL);
 646         gtk_object_set(GTK_OBJECT (knot->item),
 647                        "stroke_color",
 648                        knot->stroke[SP_KNOT_STATE_DRAGGING],
 649                        NULL);
 650     } else if (knot->flags & SP_KNOT_MOUSEOVER) {
 651         gtk_object_set(GTK_OBJECT(knot->item),
 652                        "fill_color",
 653                        knot->fill[SP_KNOT_STATE_MOUSEOVER],
 654                        NULL);
 655         gtk_object_set(GTK_OBJECT(knot->item),
 656                        "stroke_color",
 657                        knot->stroke[SP_KNOT_STATE_MOUSEOVER],
 658                        NULL);
 659     } else {
 660         gtk_object_set(GTK_OBJECT(knot->item),
 661                        "fill_color",
 662                         knot->fill[SP_KNOT_STATE_NORMAL],
 663                        NULL);
 664         gtk_object_set(GTK_OBJECT(knot->item),
 665                        "stroke_color",
 666                        knot->stroke[SP_KNOT_STATE_NORMAL],
 667                        NULL);
 668     }
 669 }
 670
 671
 672
 673 /*
 674   Local Variables:
 675   mode:c++
 676   c-file-style:"stroustrup"
 677   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 678   indent-tabs-mode:nil
 679   fill-column:99
 680   End:
 681 */
 682 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :