git.sur5r.net Git - glabels/blob - glabels2/src/view-line.c

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  view_line.c:  GLabels label line object widget
   5  *
   6  *  Copyright (C) 2001-2002  Jim Evins <evins@snaught.com>.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23 #include <glib.h>
  24
  25 #include "view-line.h"
  26
  27 #include "view-highlight.h"
  28
  29 #include "glabels.h"
  30 #include "wdgt-line.h"
  31 #include "wdgt-vector.h"
  32 #include "wdgt-position.h"
  33
  34 #include "pixmaps/cursor_line.xbm"
  35 #include "pixmaps/cursor_line_mask.xbm"
  36
  37 #include "debug.h"
  38
  39 /*========================================================*/
  40 /* Private macros and constants.                          */
  41 /*========================================================*/
  42 #define CREATE_LINE_COLOR   GNOME_CANVAS_COLOR_A (0, 0, 0, 192)
  43
  44 #define DEFAULT_LINE_COLOR  GNOME_CANVAS_COLOR_A (0, 0, 0, 255)
  45
  46 /*========================================================*/
  47 /* Private types.                                         */
  48 /*========================================================*/
  49
  50 struct _glViewLinePrivate {
  51         GnomeCanvasItem       *item;
  52
  53         /* Property dialog Page 0 widgets */
  54         GtkWidget             *line;
  55
  56         /* Property dialog Page 1 widgets */
  57         GtkWidget             *position;
  58         GtkWidget             *vector;
  59 };
  60
  61 /*========================================================*/
  62 /* Private globals.                                       */
  63 /*========================================================*/
  64
  65 static glViewObjectClass *parent_class = NULL;
  66
  67
  68 /*========================================================*/
  69 /* Private function prototypes.                           */
  70 /*========================================================*/
  71
  72 static void      gl_view_line_class_init    (glViewLineClass *klass);
  73 static void      gl_view_line_instance_init (glViewLine *view_line);
  74 static void      gl_view_line_finalize      (GObject *object);
  75
  76 static void      update_view_line_cb        (glLabelObject *object,
  77                                              glViewLine *view_line);
  78
  79 static GtkWidget *construct_properties_dialog (glViewLine *view_line);
  80
  81 static void      response_cb                (GtkDialog *dialog,
  82                                              gint response,
  83                                              glViewLine *view_line);
  84
  85 static void      line_changed_cb            (glWdgtLine *line,
  86                                              glViewLine *view_line);
  87
  88 static void      position_changed_cb        (glWdgtPosition *position,
  89                                              glViewLine *view_line);
  90
  91 static void      vector_changed_cb          (glWdgtVector *vector,
  92                                              glViewLine *view_line);
  93
  94 static void      update_dialog_cb           (glLabelObject *object,
  95                                              glViewLine *view_line);
  96
  97 \f
  98 /*****************************************************************************/
  99 /* Boilerplate object stuff.                                                 */
 100 /*****************************************************************************/
 101 GType
 102 gl_view_line_get_type (void)
 103 {
 104         static GType type = 0;
 105
 106         if (!type) {
 107                 GTypeInfo info = {
 108                         sizeof (glViewLineClass),
 109                         NULL,
 110                         NULL,
 111                         (GClassInitFunc) gl_view_line_class_init,
 112                         NULL,
 113                         NULL,
 114                         sizeof (glViewLine),
 115                         0,
 116                         (GInstanceInitFunc) gl_view_line_instance_init,
 117                 };
 118
 119                 type = g_type_register_static (GL_TYPE_VIEW_OBJECT,
 120                                                "glViewLine", &info, 0);
 121         }
 122
 123         return type;
 124 }
 125
 126 static void
 127 gl_view_line_class_init (glViewLineClass *klass)
 128 {
 129         GObjectClass *object_class = (GObjectClass *) klass;
 130
 131         gl_debug (DEBUG_VIEW, "START");
 132
 133         parent_class = g_type_class_peek_parent (klass);
 134
 135         object_class->finalize = gl_view_line_finalize;
 136
 137         gl_debug (DEBUG_VIEW, "END");
 138 }
 139
 140 static void
 141 gl_view_line_instance_init (glViewLine *view_line)
 142 {
 143         gl_debug (DEBUG_VIEW, "START");
 144
 145         view_line->private = g_new0 (glViewLinePrivate, 1);
 146
 147         gl_debug (DEBUG_VIEW, "END");
 148 }
 149
 150 static void
 151 gl_view_line_finalize (GObject *object)
 152 {
 153         glLabel       *parent;
 154
 155         gl_debug (DEBUG_VIEW, "START");
 156
 157         g_return_if_fail (object && GL_IS_VIEW_LINE (object));
 158
 159         G_OBJECT_CLASS (parent_class)->finalize (object);
 160
 161         gl_debug (DEBUG_VIEW, "END");
 162 }
 163
 164 /*****************************************************************************/
 165 /* NEW line object view.                                                  */
 166 /*****************************************************************************/
 167 glViewObject *
 168 gl_view_line_new (glLabelLine *object,
 169                   glView     *view)
 170 {
 171         glViewLine         *view_line;
 172         GnomeCanvasItem    *group;
 173         gdouble            line_width;
 174         guint              line_color;
 175         gdouble            w, h;
 176         GtkMenu            *menu;
 177         GtkWidget          *dialog;
 178         GnomeCanvasPoints  *points;
 179
 180         gl_debug (DEBUG_VIEW, "START");
 181         g_return_if_fail (object && GL_IS_LABEL_LINE (object));
 182         g_return_if_fail (view && GL_IS_VIEW (view));
 183
 184         view_line = g_object_new (gl_view_line_get_type(), NULL);
 185
 186         gl_view_object_set_view (GL_VIEW_OBJECT(view_line), view);
 187         gl_view_object_set_object (GL_VIEW_OBJECT(view_line),
 188                                    GL_LABEL_OBJECT(object),
 189                                    GL_VIEW_HIGHLIGHT_LINE_RESIZABLE);
 190
 191         /* Query properties of object. */
 192         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 193         line_width = gl_label_line_get_line_width(object);
 194         line_color = gl_label_line_get_line_color(object);
 195
 196         /* Create analogous canvas item. */
 197         group = gl_view_object_get_group (GL_VIEW_OBJECT(view_line));
 198
 199         points = gnome_canvas_points_new (2);
 200         points->coords[0] = 0.0;
 201         points->coords[1] = 0.0;
 202         points->coords[2] = w;
 203         points->coords[3] = h;
 204         view_line->private->item =
 205                 gnome_canvas_item_new (GNOME_CANVAS_GROUP(group),
 206                                        gnome_canvas_line_get_type (),
 207                                        "points", points,
 208                                        "width_units", line_width,
 209                                        "fill_color_rgba", line_color,
 210                                        NULL);
 211         gnome_canvas_points_free (points);
 212
 213         g_signal_connect (G_OBJECT (object), "changed",
 214                           G_CALLBACK (update_view_line_cb), view_line);
 215
 216         /* Create a dialog for controlling/viewing object properties. */
 217         dialog = construct_properties_dialog (view_line);
 218         gl_view_object_set_dialog     (GL_VIEW_OBJECT(view_line), dialog);
 219
 220         gl_debug (DEBUG_VIEW, "END");
 221
 222         return GL_VIEW_OBJECT (view_line);
 223 }
 224
 225 /*---------------------------------------------------------------------------*/
 226 /* PRIVATE. label object "changed" callback.                                 */
 227 /*---------------------------------------------------------------------------*/
 228 static void
 229 update_view_line_cb (glLabelObject *object,
 230                      glViewLine     *view_line)
 231 {
 232         gdouble            line_width;
 233         guint              line_color;
 234         gdouble            w, h;
 235         GnomeCanvasPoints  *points;
 236
 237         gl_debug (DEBUG_VIEW, "START");
 238
 239         /* Query properties of object. */
 240         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 241         line_width = gl_label_line_get_line_width(GL_LABEL_LINE(object));
 242         line_color = gl_label_line_get_line_color(GL_LABEL_LINE(object));
 243
 244         /* Adjust appearance of analogous canvas item. */
 245         points = gnome_canvas_points_new (2);
 246         points->coords[0] = 0.0;
 247         points->coords[1] = 0.0;
 248         points->coords[2] = w;
 249         points->coords[3] = h;
 250         gnome_canvas_item_set (view_line->private->item,
 251                                "points", points,
 252                                "width_units", line_width,
 253                                "fill_color_rgba", line_color,
 254                                NULL);
 255         gnome_canvas_points_free (points);
 256
 257         /* Adjust highlight */
 258         gl_view_object_update_highlight (GL_VIEW_OBJECT(view_line));
 259
 260         gl_debug (DEBUG_VIEW, "END");
 261 }
 262
 263 /*****************************************************************************/
 264 /* Create a properties dialog for a line object.                          */
 265 /*****************************************************************************/
 266 static GtkWidget *
 267 construct_properties_dialog (glViewLine *view_line)
 268 {
 269         GtkWidget          *dialog, *notebook, *wvbox;
 270         BonoboWindow       *win = glabels_get_active_window ();
 271         glLabelObject      *object;
 272         gdouble            line_width;
 273         guint              line_color;
 274         gdouble            x, y, w, h, label_width, label_height;
 275
 276         gl_debug (DEBUG_VIEW, "START");
 277
 278         /* retrieve object and query parameters */
 279         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_line));
 280         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 281         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 282         line_width = gl_label_line_get_line_width(GL_LABEL_LINE(object));
 283         line_color = gl_label_line_get_line_color(GL_LABEL_LINE(object));
 284         gl_label_get_size (GL_LABEL(object->parent),
 285                            &label_width, &label_height);
 286
 287         /*-----------------------------------------------------------------*/
 288         /* Build dialog with notebook.                                     */
 289         /*-----------------------------------------------------------------*/
 290         dialog = gtk_dialog_new_with_buttons ( _("Edit line object properties"),
 291                                                GTK_WINDOW (win),
 292                                                GTK_DIALOG_DESTROY_WITH_PARENT,
 293                                                GTK_STOCK_CLOSE,
 294                                                            GTK_RESPONSE_CLOSE,
 295                                                NULL );
 296         g_signal_connect (G_OBJECT (dialog), "response",
 297                           G_CALLBACK (response_cb), view_line);
 298
 299         notebook = gtk_notebook_new ();
 300         gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox),
 301                             notebook, TRUE, TRUE, 0);
 302
 303         /*---------------------------*/
 304         /* Appearance Notebook Tab   */
 305         /*---------------------------*/
 306         wvbox = gtk_vbox_new (FALSE, GNOME_PAD);
 307         gtk_container_set_border_width (GTK_CONTAINER (wvbox), 10);
 308         gtk_notebook_append_page (GTK_NOTEBOOK (notebook), wvbox,
 309                                   gtk_label_new (_("Appearance")));
 310
 311         /* ------ Line line ------ */
 312         view_line->private->line = gl_wdgt_line_new (_("Outline"));
 313         gl_wdgt_line_set_params (GL_WDGT_LINE (view_line->private->line),
 314                                  line_width,
 315                                  line_color);
 316         gtk_box_pack_start (GTK_BOX (wvbox), view_line->private->line,
 317                             FALSE, FALSE, 0);
 318         g_signal_connect (G_OBJECT (view_line->private->line), "changed",
 319                           G_CALLBACK(line_changed_cb), view_line);
 320
 321
 322         /*----------------------------*/
 323         /* Position/Size Notebook Tab */
 324         /*----------------------------*/
 325         wvbox = gtk_vbox_new (FALSE, GNOME_PAD);
 326         gtk_container_set_border_width (GTK_CONTAINER (wvbox), 10);
 327         gtk_notebook_append_page (GTK_NOTEBOOK (notebook), wvbox,
 328                                   gtk_label_new (_("Position/Size")));
 329
 330         /* ------ Position Frame ------ */
 331         view_line->private->position = gl_wdgt_position_new (_("Position"));
 332         gl_wdgt_position_set_params (GL_WDGT_POSITION (view_line->private->position),
 333                                      x, y,
 334                                      label_width, label_height);
 335         gtk_box_pack_start (GTK_BOX (wvbox),
 336                             view_line->private->position,
 337                             FALSE, FALSE, 0);
 338         g_signal_connect (G_OBJECT (view_line->private->position),
 339                           "changed",
 340                           G_CALLBACK(position_changed_cb), view_line);
 341
 342
 343         /* ------ Size Frame ------ */
 344         view_line->private->vector = gl_wdgt_vector_new (_("Size"));
 345         gl_wdgt_vector_set_params (GL_WDGT_VECTOR (view_line->private->vector),
 346                                    w, h,
 347                                    label_width, label_height);
 348         gtk_box_pack_start (GTK_BOX (wvbox), view_line->private->vector,
 349                                 FALSE, FALSE, 0);
 350         g_signal_connect (G_OBJECT (view_line->private->vector), "changed",
 351                           G_CALLBACK(vector_changed_cb), view_line);
 352
 353
 354         /*----------------------------*/
 355         /* Track object changes.      */
 356         /*----------------------------*/
 357         g_signal_connect (G_OBJECT (object), "changed",
 358                           G_CALLBACK (update_dialog_cb), view_line);
 359
 360         gl_debug (DEBUG_VIEW, "END");
 361
 362         return dialog;
 363 }
 364
 365 /*---------------------------------------------------------------------------*/
 366 /* PRIVATE.  "Response" callback.                                            */
 367 /*---------------------------------------------------------------------------*/
 368 static void
 369 response_cb (GtkDialog     *dialog,
 370              gint          response,
 371              glViewLine    *view_line)
 372 {
 373         gl_debug (DEBUG_VIEW, "START");
 374
 375         g_return_if_fail(dialog != NULL);
 376         g_return_if_fail(GTK_IS_DIALOG(dialog));
 377
 378         switch(response) {
 379         case GTK_RESPONSE_CLOSE:
 380                 gtk_widget_hide (GTK_WIDGET(dialog));
 381                 break;
 382         default:
 383                 g_assert_not_reached();
 384         }
 385
 386         gl_debug (DEBUG_VIEW, "END");
 387 }
 388
 389 /*---------------------------------------------------------------------------*/
 390 /* PRIVATE.  line properties "changed" callback.                             */
 391 /*---------------------------------------------------------------------------*/
 392 static void
 393 line_changed_cb (glWdgtLine     *line,
 394                  glViewLine     *view_line)
 395 {
 396         glLabelObject      *object;
 397         gdouble            line_width;
 398         guint              line_color;
 399
 400         gl_debug (DEBUG_VIEW, "START");
 401
 402         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_line));
 403
 404         gl_wdgt_line_get_params (GL_WDGT_LINE (line),
 405                                  &line_width,
 406                                  &line_color);
 407
 408         g_signal_handlers_block_by_func (G_OBJECT(object),
 409                                          update_dialog_cb, view_line);
 410         gl_label_line_set_line_width(GL_LABEL_LINE(object), line_width);
 411         gl_label_line_set_line_color(GL_LABEL_LINE(object), line_color);
 412         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 413                                            update_dialog_cb, view_line);
 414
 415         gl_debug (DEBUG_VIEW, "END");
 416 }
 417
 418 /*---------------------------------------------------------------------------*/
 419 /* PRIVATE.  position "changed" callback.                                    */
 420 /*---------------------------------------------------------------------------*/
 421 static void
 422 position_changed_cb (glWdgtPosition     *position,
 423                      glViewLine         *view_line)
 424 {
 425         glLabelObject      *object;
 426         gdouble            x, y;
 427
 428         gl_debug (DEBUG_VIEW, "START");
 429
 430         gl_wdgt_position_get_position (GL_WDGT_POSITION (position), &x, &y);
 431
 432         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_line));
 433
 434         g_signal_handlers_block_by_func (G_OBJECT(object),
 435                                          update_dialog_cb, view_line);
 436         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 437         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 438                                            update_dialog_cb, view_line);
 439
 440         gl_debug (DEBUG_VIEW, "END");
 441 }
 442
 443 /*---------------------------------------------------------------------------*/
 444 /* PRIVATE.  vector "changed" callback.                                      */
 445 /*---------------------------------------------------------------------------*/
 446 static void
 447 vector_changed_cb (glWdgtVector     *vector,
 448                    glViewLine     *view_line)
 449 {
 450         glLabelObject *object;
 451         gdouble       w, h;
 452         gboolean      keep_aspect_ratio_flag;
 453
 454         gl_debug (DEBUG_VIEW, "START");
 455
 456         gl_wdgt_vector_get_params (GL_WDGT_VECTOR (vector), &w, &h);
 457
 458         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_line));
 459
 460         g_signal_handlers_block_by_func (G_OBJECT(object),
 461                                          update_dialog_cb, view_line);
 462         gl_label_object_set_size (GL_LABEL_OBJECT(object), w, h);
 463         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 464                                            update_dialog_cb, view_line);
 465
 466         gl_debug (DEBUG_VIEW, "END");
 467 }
 468
 469 /*---------------------------------------------------------------------------*/
 470 /* PRIVATE. label object "changed" callback.                                 */
 471 /*---------------------------------------------------------------------------*/
 472 static void
 473 update_dialog_cb (glLabelObject     *object,
 474                   glViewLine        *view_line)
 475 {
 476         gdouble            line_width;
 477         guint              line_color;
 478         gdouble            x, y, w, h, label_width, label_height;
 479
 480         gl_debug (DEBUG_VIEW, "START");
 481
 482         /* Query properties of object. */
 483         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 484         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 485         line_width = gl_label_line_get_line_width(GL_LABEL_LINE(object));
 486         line_color = gl_label_line_get_line_color(GL_LABEL_LINE(object));
 487         gl_label_get_size (GL_LABEL(object->parent),
 488                            &label_width, &label_height);
 489
 490         /* Block widget handlers to prevent recursion */
 491         g_signal_handlers_block_by_func (G_OBJECT(view_line->private->line),
 492                                          line_changed_cb, view_line);
 493         g_signal_handlers_block_by_func (G_OBJECT(view_line->private->position),
 494                                          position_changed_cb, view_line);
 495         g_signal_handlers_block_by_func (G_OBJECT(view_line->private->vector),
 496                                          vector_changed_cb, view_line);
 497
 498         /* Update widgets in property dialog */
 499         gl_wdgt_line_set_params (GL_WDGT_LINE (view_line->private->line),
 500                                  line_width,
 501                                  line_color);
 502         gl_wdgt_position_set_position (GL_WDGT_POSITION(view_line->private->position),
 503                                        x, y);
 504         gl_wdgt_vector_set_params (GL_WDGT_VECTOR(view_line->private->vector),
 505                                    w, h, label_width, label_height);
 506
 507         /* Unblock widget handlers */
 508         g_signal_handlers_unblock_by_func (G_OBJECT(view_line->private->line),
 509                                            line_changed_cb, view_line);
 510         g_signal_handlers_unblock_by_func (G_OBJECT(view_line->private->position),
 511                                            position_changed_cb, view_line);
 512         g_signal_handlers_unblock_by_func (G_OBJECT(view_line->private->vector),
 513                                            vector_changed_cb, view_line);
 514
 515
 516         gl_debug (DEBUG_VIEW, "END");
 517 }
 518
 519 /*****************************************************************************/
 520 /* Return apropos cursor for create object mode.                             */
 521 /*****************************************************************************/
 522 GdkCursor *
 523 gl_view_line_get_create_cursor (void)
 524 {
 525         static GdkCursor *cursor = NULL;
 526         GdkPixmap        *pixmap_data, *pixmap_mask;
 527         GdkColor         fg = { 0, 0, 0, 0 };
 528         GdkColor         bg = { 0, 65535, 65535, 65535 };
 529
 530         gl_debug (DEBUG_VIEW, "START");
 531
 532         if (!cursor) {
 533                 pixmap_data = gdk_bitmap_create_from_data (NULL,
 534                                                            cursor_line_bits,
 535                                                            cursor_line_width,
 536                                                            cursor_line_height);
 537                 pixmap_mask = gdk_bitmap_create_from_data (NULL,
 538                                                            cursor_line_mask_bits,
 539                                                            cursor_line_mask_width,
 540                                                            cursor_line_mask_height);
 541                 cursor =
 542                     gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 543                                                 &bg, cursor_line_x_hot,
 544                                                 cursor_line_y_hot);
 545         }
 546
 547         gl_debug (DEBUG_VIEW, "END");
 548
 549         return cursor;
 550 }
 551
 552 /*****************************************************************************/
 553 /* Canvas event handler for creating line objects.                            */
 554 /*****************************************************************************/
 555 int
 556 gl_view_line_create_event_handler (GnomeCanvas *canvas,
 557                                    GdkEvent    *event,
 558                                    glView      *view)
 559 {
 560         static gdouble      x0, y0;
 561         static gboolean     dragging = FALSE;
 562         static glViewObject *view_line;
 563         static GObject      *object;
 564         gdouble             line_width;
 565         guint               line_color;
 566         gdouble             x, y, w, h;
 567
 568         gl_debug (DEBUG_VIEW, "");
 569
 570         switch (event->type) {
 571
 572         case GDK_BUTTON_PRESS:
 573                 switch (event->button.button) {
 574                 case 1:
 575                         dragging = TRUE;
 576                         gdk_pointer_grab (GTK_WIDGET (view->canvas)->window,
 577                                           FALSE,
 578                                           GDK_POINTER_MOTION_MASK |
 579                                           GDK_BUTTON_RELEASE_MASK |
 580                                           GDK_BUTTON_PRESS_MASK,
 581                                           NULL, NULL, event->button.time);
 582                         gnome_canvas_window_to_world (canvas,
 583                                                       event->button.x,
 584                                                       event->button.y, &x, &y);
 585                         object = gl_label_line_new (view->label);
 586                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 587                                                       x, y);
 588                         gl_label_object_set_size (GL_LABEL_OBJECT(object),
 589                                                   0.0, 0.0);
 590                         line_width = 1.0;
 591                         line_color = CREATE_LINE_COLOR;
 592                         gl_label_line_set_line_width (GL_LABEL_LINE(object),
 593                                                      line_width);
 594                         gl_label_line_set_line_color (GL_LABEL_LINE(object),
 595                                                      line_color);
 596                         view_line = gl_view_line_new (GL_LABEL_LINE(object),
 597                                                       view);
 598                         x0 = x;
 599                         y0 = y;
 600                         return TRUE;
 601
 602                 default:
 603                         return FALSE;
 604                 }
 605
 606         case GDK_BUTTON_RELEASE:
 607                 switch (event->button.button) {
 608                 case 1:
 609                         dragging = FALSE;
 610                         gdk_pointer_ungrab (event->button.time);
 611                         gnome_canvas_window_to_world (canvas,
 612                                                       event->button.x,
 613                                                       event->button.y, &x, &y);
 614                         if ((x0 == x) && (y0 == y)) {
 615                                 x = x0 + 36.0;
 616                                 y = y0 + 36.0;
 617                         }
 618                         w = x - x0;
 619                         h = y - y0;
 620                         gl_label_object_set_size (GL_LABEL_OBJECT(object),
 621                                                   w, h);
 622                         line_color = DEFAULT_LINE_COLOR;
 623                         gl_label_line_set_line_color (GL_LABEL_LINE(object),
 624                                                      line_color);
 625                         gl_view_unselect_all (view);
 626                         gl_view_object_select (GL_VIEW_OBJECT(view_line));
 627                         gl_view_arrow_mode (view);
 628                         return TRUE;
 629
 630                 default:
 631                         return FALSE;
 632                 }
 633
 634         case GDK_MOTION_NOTIFY:
 635                 if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
 636                         gnome_canvas_window_to_world (canvas,
 637                                                       event->button.x,
 638                                                       event->button.y, &x, &y);
 639                         w = x - x0;
 640                         h = y - y0;
 641                         gl_label_object_set_size (GL_LABEL_OBJECT(object),
 642                                                   w, h);
 643                         return TRUE;
 644                 } else {
 645                         return FALSE;
 646                 }
 647
 648         default:
 649                 return FALSE;
 650         }
 651
 652 }