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

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  view_barcode.c:  GLabels label barcode 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 <libgnomeprint/gnome-glyphlist.h>
  26
  27 #include "view-barcode.h"
  28 #include "canvas-hacktext.h"
  29
  30 #include "view-highlight.h"
  31
  32 #include "wdgt-bc-data.h"
  33 #include "wdgt-bc-props.h"
  34 #include "wdgt-bc-style.h"
  35 #include "wdgt-position.h"
  36 #include "color.h"
  37 #include "prefs.h"
  38
  39 #include "pixmaps/cursor_barcode.xbm"
  40 #include "pixmaps/cursor_barcode_mask.xbm"
  41
  42 #include "debug.h"
  43
  44 /*========================================================*/
  45 /* Private macros and constants.                          */
  46 /*========================================================*/
  47
  48 /*========================================================*/
  49 /* Private types.                                         */
  50 /*========================================================*/
  51
  52 struct _glViewBarcodePrivate {
  53
  54         GList     *item_list;
  55
  56         /* Page 0 widgets */
  57         GtkWidget *bc_data;
  58
  59         /* Page 1 widgets */
  60         GtkWidget *bc_props;
  61         GtkWidget *bc_style;
  62
  63         /* Page 2 widgets */
  64         GtkWidget *position;
  65 };
  66
  67 /*========================================================*/
  68 /* Private globals.                                       */
  69 /*========================================================*/
  70
  71 static glViewObjectClass *parent_class = NULL;
  72
  73
  74 /*========================================================*/
  75 /* Private function prototypes.                           */
  76 /*========================================================*/
  77
  78 static void      gl_view_barcode_class_init    (glViewBarcodeClass *klass);
  79 static void      gl_view_barcode_instance_init (glViewBarcode  *view_barcode);
  80 static void      gl_view_barcode_finalize      (GObject        *object);
  81
  82 static void      update_view_barcode_cb        (glLabelObject  *object,
  83                                                 glViewBarcode  *view_barcode);
  84
  85 static GtkWidget *construct_properties_dialog  (glViewObject   *view_object);
  86
  87 static void      response_cb                   (GtkDialog      *dialog,
  88                                                 gint            response,
  89                                                 glViewBarcode  *view_barcode);
  90
  91 static void      bc_data_changed_cb            (glWdgtBCData   *bc_data,
  92                                                 glViewBarcode  *view_barcode);
  93
  94 static void      bc_props_changed_cb           (glWdgtBCProps  *bc_props,
  95                                                 glViewBarcode  *view_barcode);
  96
  97 static void      bc_style_changed_cb           (glWdgtBCStyle  *bc_style,
  98                                                 glViewBarcode  *view_barcode);
  99
 100 static void      position_changed_cb           (glWdgtPosition *position,
 101                                                 glViewBarcode  *view_barcode);
 102
 103 static void      update_dialog_cb              (glLabelObject  *object,
 104                                                 glViewBarcode  *view_barcode);
 105
 106 static void      update_dialog_from_move_cb    (glLabelObject  *object,
 107                                                 gdouble         dx,
 108                                                 gdouble         dy,
 109                                                 glViewBarcode  *view_barcode);
 110
 111 static void      draw_barcode                  (glViewBarcode  *view_barcode);
 112
 113 \f
 114 /*****************************************************************************/
 115 /* Boilerplate object stuff.                                                 */
 116 /*****************************************************************************/
 117 GType
 118 gl_view_barcode_get_type (void)
 119 {
 120         static GType type = 0;
 121
 122         if (!type) {
 123                 GTypeInfo info = {
 124                         sizeof (glViewBarcodeClass),
 125                         NULL,
 126                         NULL,
 127                         (GClassInitFunc) gl_view_barcode_class_init,
 128                         NULL,
 129                         NULL,
 130                         sizeof (glViewBarcode),
 131                         0,
 132                         (GInstanceInitFunc) gl_view_barcode_instance_init,
 133                 };
 134
 135                 type = g_type_register_static (GL_TYPE_VIEW_OBJECT,
 136                                                "glViewBarcode", &info, 0);
 137         }
 138
 139         return type;
 140 }
 141
 142 static void
 143 gl_view_barcode_class_init (glViewBarcodeClass *klass)
 144 {
 145         GObjectClass      *object_class      = (GObjectClass *) klass;
 146         glViewObjectClass *view_object_class = (glViewObjectClass *) klass;
 147
 148         gl_debug (DEBUG_VIEW, "START");
 149
 150         parent_class = g_type_class_peek_parent (klass);
 151
 152         object_class->finalize = gl_view_barcode_finalize;
 153
 154         view_object_class->construct_dialog = construct_properties_dialog;
 155
 156         gl_debug (DEBUG_VIEW, "END");
 157 }
 158
 159 static void
 160 gl_view_barcode_instance_init (glViewBarcode *view_barcode)
 161 {
 162         gl_debug (DEBUG_VIEW, "START");
 163
 164         view_barcode->private = g_new0 (glViewBarcodePrivate, 1);
 165
 166         gl_debug (DEBUG_VIEW, "END");
 167 }
 168
 169 static void
 170 gl_view_barcode_finalize (GObject *object)
 171 {
 172         glLabel       *parent;
 173
 174         gl_debug (DEBUG_VIEW, "START");
 175
 176         g_return_if_fail (object && GL_IS_VIEW_BARCODE (object));
 177
 178         G_OBJECT_CLASS (parent_class)->finalize (object);
 179
 180         gl_debug (DEBUG_VIEW, "END");
 181 }
 182
 183 /*****************************************************************************/
 184 /* NEW barcode object view.                                                  */
 185 /*****************************************************************************/
 186 glViewObject *
 187 gl_view_barcode_new (glLabelBarcode *object,
 188                      glView         *view)
 189 {
 190         glViewBarcode      *view_barcode;
 191         GtkMenu            *menu;
 192
 193         gl_debug (DEBUG_VIEW, "START");
 194         g_return_if_fail (object && GL_IS_LABEL_BARCODE (object));
 195         g_return_if_fail (view && GL_IS_VIEW (view));
 196
 197         view_barcode = g_object_new (gl_view_barcode_get_type(), NULL);
 198
 199         gl_view_object_set_view (GL_VIEW_OBJECT(view_barcode), view);
 200         gl_view_object_set_object (GL_VIEW_OBJECT(view_barcode),
 201                                    GL_LABEL_OBJECT(object),
 202                                    GL_VIEW_HIGHLIGHT_SIMPLE);
 203
 204         /* Create analogous canvas items. */
 205         draw_barcode (view_barcode);
 206
 207         g_signal_connect (G_OBJECT (object), "changed",
 208                           G_CALLBACK (update_view_barcode_cb), view_barcode);
 209
 210         gl_debug (DEBUG_VIEW, "END");
 211
 212         return GL_VIEW_OBJECT (view_barcode);
 213 }
 214
 215 /*---------------------------------------------------------------------------*/
 216 /* PRIVATE. label object "changed" callback.                                 */
 217 /*---------------------------------------------------------------------------*/
 218 static void
 219 update_view_barcode_cb (glLabelObject *object,
 220                         glViewBarcode *view_barcode)
 221 {
 222         glView             *view;
 223         GnomeCanvasItem    *group;
 224
 225         gl_debug (DEBUG_VIEW, "START");
 226
 227         view = gl_view_object_get_view (GL_VIEW_OBJECT(view_barcode));
 228
 229         /* Adjust appearance of analogous canvas items. */
 230         draw_barcode (view_barcode);
 231
 232         gl_debug (DEBUG_VIEW, "END");
 233 }
 234
 235 /*****************************************************************************/
 236 /* Create a properties dialog for a barcode object.                          */
 237 /*****************************************************************************/
 238 static GtkWidget *
 239 construct_properties_dialog (glViewObject *view_object)
 240 {
 241         glViewBarcode      *view_barcode = (glViewBarcode *)view_object;
 242         GtkWidget          *dialog, *wsection;
 243         glLabelObject      *object;
 244         gdouble            x, y, w, h, label_width, label_height;
 245         glTextNode         *text_node;
 246         glBarcodeStyle     style;
 247         gboolean           text_flag;
 248         guint              color;
 249         gdouble            scale;
 250         glMerge            *merge;
 251         GtkSizeGroup       *label_size_group;
 252         GtkWidget          *window;
 253
 254         gl_debug (DEBUG_VIEW, "START");
 255
 256         /* retrieve object and query parameters */
 257         object = gl_view_object_get_object (view_object);
 258         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 259         text_node = gl_label_barcode_get_data(GL_LABEL_BARCODE(object));
 260         gl_label_barcode_get_props (GL_LABEL_BARCODE(object),
 261                                     &style, &text_flag, &color, &scale);
 262         gl_label_get_size (GL_LABEL(object->parent),
 263                            &label_width, &label_height);
 264         merge = gl_label_get_merge (GL_LABEL(object->parent));
 265
 266         /*-----------------------------------------------------------------*/
 267         /* Build dialog.                                                   */
 268         /*-----------------------------------------------------------------*/
 269         window = gtk_widget_get_toplevel (
 270                 GTK_WIDGET(gl_view_object_get_view(view_object)));
 271         dialog = gl_hig_dialog_new_with_buttons ( _("Edit barcode object properties"),
 272                                                   GTK_WINDOW (window),
 273                                                   GTK_DIALOG_DESTROY_WITH_PARENT,
 274                                                   GTK_STOCK_CLOSE,
 275                                                            GTK_RESPONSE_CLOSE,
 276                                                   NULL );
 277         gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
 278         g_signal_connect (G_OBJECT (dialog), "response",
 279                           G_CALLBACK (response_cb), view_object);
 280
 281         label_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
 282
 283         /*---------------------------*/
 284         /* Data section              */
 285         /*---------------------------*/
 286         wsection = gl_hig_category_new (_("Data"));
 287         gl_hig_dialog_add_widget (GL_HIG_DIALOG(dialog), wsection);
 288
 289         /* barcode data */
 290         view_barcode->private->bc_data =
 291                 gl_wdgt_bc_data_new (merge->field_defs);
 292         gl_wdgt_bc_data_set_label_size_group (GL_WDGT_BC_DATA(view_barcode->private->bc_data),
 293                                               label_size_group);
 294         gl_wdgt_bc_data_set_data (GL_WDGT_BC_DATA(view_barcode->private->bc_data),
 295                                   (merge->type != GL_MERGE_NONE),
 296                                   text_node);
 297         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 298                                     view_barcode->private->bc_data);
 299         g_signal_connect ( G_OBJECT(view_barcode->private->bc_data),
 300                            "changed", G_CALLBACK (bc_data_changed_cb),
 301                            view_barcode);
 302
 303
 304         /*---------------------------*/
 305         /* Appearance section        */
 306         /*---------------------------*/
 307         wsection = gl_hig_category_new (_("Properties"));
 308         gl_hig_dialog_add_widget (GL_HIG_DIALOG(dialog), wsection);
 309
 310         /* Barcode style widget */
 311         view_barcode->private->bc_style = gl_wdgt_bc_style_new ();
 312         gl_wdgt_bc_style_set_label_size_group (GL_WDGT_BC_STYLE(view_barcode->private->bc_style),
 313                                                label_size_group);
 314         gl_wdgt_bc_style_set_params (GL_WDGT_BC_STYLE (view_barcode->private->bc_style),
 315                                      style, text_flag);
 316         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 317                                     view_barcode->private->bc_style);
 318         g_signal_connect (G_OBJECT (view_barcode->private->bc_style),
 319                           "changed", G_CALLBACK (bc_style_changed_cb),
 320                           view_barcode);
 321
 322         /* barcode props entry */
 323         gl_debug (DEBUG_VIEW, "Creating props entry...");
 324         view_barcode->private->bc_props = gl_wdgt_bc_props_new ();
 325         gl_wdgt_bc_props_set_label_size_group (GL_WDGT_BC_PROPS(view_barcode->private->bc_props),
 326                                                label_size_group);
 327         gl_wdgt_bc_props_set_params (GL_WDGT_BC_PROPS(view_barcode->private->bc_props),
 328                                      scale, color);
 329         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 330                                     view_barcode->private->bc_props);
 331         g_signal_connect ( G_OBJECT(view_barcode->private->bc_props),
 332                            "changed", G_CALLBACK (bc_props_changed_cb),
 333                            view_barcode);
 334
 335
 336         /*----------------------------*/
 337         /* Position section           */
 338         /*----------------------------*/
 339         wsection = gl_hig_category_new (_("Position"));
 340         gl_hig_dialog_add_widget (GL_HIG_DIALOG(dialog), wsection);
 341
 342         /* ------ Position Frame ------ */
 343         view_barcode->private->position = gl_wdgt_position_new ();
 344         gl_wdgt_position_set_label_size_group (GL_WDGT_POSITION(view_barcode->private->position),
 345                                                label_size_group);
 346         gl_wdgt_position_set_params (GL_WDGT_POSITION (view_barcode->private->position),
 347                                      x, y,
 348                                      label_width, label_height);
 349         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 350                                     view_barcode->private->position);
 351         g_signal_connect (G_OBJECT (view_barcode->private->position),
 352                           "changed",
 353                           G_CALLBACK(position_changed_cb), view_barcode);
 354
 355
 356         /*----------------------------*/
 357         /* Track object changes.      */
 358         /*----------------------------*/
 359         g_signal_connect (G_OBJECT (object), "changed",
 360                           G_CALLBACK (update_dialog_cb), view_barcode);
 361         g_signal_connect (G_OBJECT (object), "moved",
 362                           G_CALLBACK (update_dialog_from_move_cb),
 363                           view_barcode);
 364
 365         gl_debug (DEBUG_VIEW, "END");
 366
 367         return dialog;
 368 }
 369
 370 /*---------------------------------------------------------------------------*/
 371 /* PRIVATE.  "Response" callback.                                            */
 372 /*---------------------------------------------------------------------------*/
 373 static void
 374 response_cb (GtkDialog     *dialog,
 375              gint          response,
 376              glViewBarcode   *view_barcode)
 377 {
 378         gl_debug (DEBUG_VIEW, "START");
 379
 380         g_return_if_fail(dialog != NULL);
 381         g_return_if_fail(GTK_IS_DIALOG(dialog));
 382
 383         switch(response) {
 384         case GTK_RESPONSE_CLOSE:
 385                 gtk_widget_hide (GTK_WIDGET(dialog));
 386                 break;
 387         case GTK_RESPONSE_DELETE_EVENT:
 388                 break;
 389         default:
 390                 g_print ("response = %d", response);
 391                 g_assert_not_reached();
 392         }
 393
 394         gl_debug (DEBUG_VIEW, "END");
 395 }
 396
 397 /*---------------------------------------------------------------------------*/
 398 /* PRIVATE.  barcode data "changed" callback.                                */
 399 /*---------------------------------------------------------------------------*/
 400 static void
 401 bc_data_changed_cb (glWdgtBCData        *bc_data,
 402                     glViewBarcode       *view_barcode)
 403 {
 404         glLabelObject    *object;
 405         glTextNode       *text_node;
 406
 407         gl_debug (DEBUG_VIEW, "START");
 408
 409         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_barcode));
 410
 411         text_node = gl_wdgt_bc_data_get_data (bc_data);
 412
 413         g_signal_handlers_block_by_func (G_OBJECT(object),
 414                                          update_dialog_cb, view_barcode);
 415         gl_label_barcode_set_data (GL_LABEL_BARCODE(object), text_node);
 416         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 417                                            update_dialog_cb, view_barcode);
 418
 419         gl_text_node_free (&text_node);
 420
 421         gl_debug (DEBUG_VIEW, "END");
 422 }
 423
 424 /*---------------------------------------------------------------------------*/
 425 /* PRIVATE.  barcode props "changed" callback.                               */
 426 /*---------------------------------------------------------------------------*/
 427 static void
 428 bc_props_changed_cb (glWdgtBCProps  *text_props,
 429                      glViewBarcode  *view_barcode)
 430 {
 431         glLabelObject      *object;
 432         glBarcodeStyle     style;
 433         gboolean           text_flag;
 434         guint              color;
 435         gdouble            scale;
 436
 437
 438         gl_debug (DEBUG_VIEW, "START");
 439
 440         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_barcode));
 441
 442         gl_label_barcode_get_props (GL_LABEL_BARCODE(object),
 443                                     &style, &text_flag, &color, &scale);
 444         gl_wdgt_bc_props_get_params (text_props, &scale, &color);
 445
 446         g_signal_handlers_block_by_func (G_OBJECT(object),
 447                                          update_dialog_cb, view_barcode);
 448         gl_label_barcode_set_props (GL_LABEL_BARCODE(object),
 449                                     style, text_flag, color, scale);
 450         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 451                                            update_dialog_cb, view_barcode);
 452
 453         gl_debug (DEBUG_VIEW, "END");
 454 }
 455
 456 /*---------------------------------------------------------------------------*/
 457 /* PRIVATE.  barcode style "changed" callback.                               */
 458 /*---------------------------------------------------------------------------*/
 459 static void
 460 bc_style_changed_cb (glWdgtBCStyle  *bc_style,
 461                      glViewBarcode  *view_barcode)
 462 {
 463         glLabelObject      *object;
 464         glBarcodeStyle     style;
 465         gboolean           text_flag;
 466         guint              color;
 467         gdouble            scale;
 468
 469
 470         gl_debug (DEBUG_VIEW, "START");
 471
 472         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_barcode));
 473
 474         gl_label_barcode_get_props (GL_LABEL_BARCODE(object),
 475                                     &style, &text_flag, &color, &scale);
 476         gl_wdgt_bc_style_get_params (bc_style, &style, &text_flag);
 477
 478         g_signal_handlers_block_by_func (G_OBJECT(object),
 479                                          update_dialog_cb, view_barcode);
 480         gl_label_barcode_set_props (GL_LABEL_BARCODE(object),
 481                                     style, text_flag, color, scale);
 482         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 483                                            update_dialog_cb, view_barcode);
 484
 485         gl_debug (DEBUG_VIEW, "END");
 486 }
 487
 488 /*---------------------------------------------------------------------------*/
 489 /* PRIVATE.  position "changed" callback.                                    */
 490 /*---------------------------------------------------------------------------*/
 491 static void
 492 position_changed_cb (glWdgtPosition     *position,
 493                      glViewBarcode         *view_barcode)
 494 {
 495         glLabelObject      *object;
 496         gdouble            x, y;
 497
 498         gl_debug (DEBUG_VIEW, "START");
 499
 500         gl_wdgt_position_get_position (GL_WDGT_POSITION (position), &x, &y);
 501
 502         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_barcode));
 503
 504         g_signal_handlers_block_by_func (G_OBJECT(object),
 505                                          update_dialog_cb, view_barcode);
 506         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 507         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 508                                            update_dialog_cb, view_barcode);
 509
 510         gl_debug (DEBUG_VIEW, "END");
 511 }
 512
 513 /*---------------------------------------------------------------------------*/
 514 /* PRIVATE. label object "changed" callback.                                 */
 515 /*---------------------------------------------------------------------------*/
 516 static void
 517 update_dialog_cb (glLabelObject  *object,
 518                   glViewBarcode     *view_barcode)
 519 {
 520         gdouble            x, y;
 521         glTextNode         *text_node;
 522         glBarcodeStyle     style;
 523         gboolean           text_flag;
 524         guint              color;
 525         gdouble            scale;
 526         glMerge            *merge;
 527
 528         gl_debug (DEBUG_VIEW, "START");
 529
 530         /* Query properties of object. */
 531         text_node = gl_label_barcode_get_data(GL_LABEL_BARCODE(object));
 532         gl_label_barcode_get_props (GL_LABEL_BARCODE(object),
 533                                     &style, &text_flag, &color, &scale);
 534         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 535         merge = gl_label_get_merge (GL_LABEL(object->parent));
 536
 537         /* Block widget handlers to prevent recursion */
 538         g_signal_handlers_block_by_func (G_OBJECT(view_barcode->private->bc_data),
 539                                          bc_data_changed_cb, view_barcode);
 540         g_signal_handlers_block_by_func (G_OBJECT(view_barcode->private->bc_props),
 541                                          bc_props_changed_cb, view_barcode);
 542         g_signal_handlers_block_by_func (G_OBJECT(view_barcode->private->bc_style),
 543                                          bc_style_changed_cb, view_barcode);
 544         g_signal_handlers_block_by_func (G_OBJECT(view_barcode->private->position),
 545                                          position_changed_cb, view_barcode);
 546
 547         /* Update widgets in property dialog */
 548
 549         gl_wdgt_bc_data_set_data (GL_WDGT_BC_DATA(view_barcode->private->bc_data),
 550                                   (merge->type != GL_MERGE_NONE),
 551                                   text_node);
 552         gl_wdgt_bc_data_set_field_defs (GL_WDGT_BC_DATA(view_barcode->private->bc_data),
 553                                         merge->field_defs);
 554         gl_wdgt_bc_props_set_params (GL_WDGT_BC_PROPS(view_barcode->private->bc_props),
 555                                      scale, color);
 556         gl_wdgt_bc_style_set_params (GL_WDGT_BC_STYLE(view_barcode->private->bc_style),
 557                                      style, text_flag);
 558         gl_wdgt_position_set_position (GL_WDGT_POSITION(view_barcode->private->position),
 559                                        x, y);
 560
 561         /* Unblock widget handlers */
 562         g_signal_handlers_unblock_by_func (G_OBJECT(view_barcode->private->bc_data),
 563                                            bc_data_changed_cb, view_barcode);
 564         g_signal_handlers_unblock_by_func (G_OBJECT(view_barcode->private->bc_props),
 565                                            bc_props_changed_cb, view_barcode);
 566         g_signal_handlers_unblock_by_func (G_OBJECT(view_barcode->private->bc_style),
 567                                            bc_style_changed_cb, view_barcode);
 568         g_signal_handlers_unblock_by_func (G_OBJECT(view_barcode->private->position),
 569                                            position_changed_cb, view_barcode);
 570
 571         gl_text_node_free (&text_node);
 572
 573         gl_debug (DEBUG_VIEW, "END");
 574 }
 575
 576 /*---------------------------------------------------------------------------*/
 577 /* PRIVATE. label object "moved" callback.                                   */
 578 /*---------------------------------------------------------------------------*/
 579 static void
 580 update_dialog_from_move_cb (glLabelObject *object,
 581                             gdouble        dx,
 582                             gdouble        dy,
 583                             glViewBarcode *view_barcode)
 584 {
 585         gdouble            x, y;
 586
 587         gl_debug (DEBUG_VIEW, "START");
 588
 589         /* Query properties of object. */
 590         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 591
 592         /* Block widget handlers to prevent recursion */
 593         g_signal_handlers_block_by_func (G_OBJECT(view_barcode->private->position),
 594                                          position_changed_cb, view_barcode);
 595
 596         /* Update widgets in property dialog */
 597         gl_wdgt_position_set_position (GL_WDGT_POSITION(view_barcode->private->position),
 598                                        x, y);
 599
 600         /* Unblock widget handlers */
 601         g_signal_handlers_unblock_by_func (G_OBJECT(view_barcode->private->position),
 602                                            position_changed_cb, view_barcode);
 603
 604         gl_debug (DEBUG_VIEW, "END");
 605 }
 606
 607 /*****************************************************************************/
 608 /* Return apropos cursor for create object mode.                             */
 609 /*****************************************************************************/
 610 GdkCursor *
 611 gl_view_barcode_get_create_cursor (void)
 612 {
 613         static GdkCursor *cursor = NULL;
 614         GdkPixmap        *pixmap_data, *pixmap_mask;
 615         GdkColor         fg = { 0, 0, 0, 0 };
 616         GdkColor         bg = { 0, 65535, 65535, 65535 };
 617
 618         gl_debug (DEBUG_VIEW, "START");
 619
 620         if (!cursor) {
 621                 pixmap_data = gdk_bitmap_create_from_data (NULL,
 622                                                            cursor_barcode_bits,
 623                                                            cursor_barcode_width,
 624                                                            cursor_barcode_height);
 625                 pixmap_mask = gdk_bitmap_create_from_data (NULL,
 626                                                            cursor_barcode_mask_bits,
 627                                                            cursor_barcode_mask_width,
 628                                                            cursor_barcode_mask_height);
 629                 cursor =
 630                     gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 631                                                 &bg, cursor_barcode_x_hot,
 632                                                 cursor_barcode_y_hot);
 633         }
 634
 635         gl_debug (DEBUG_VIEW, "END");
 636
 637         return cursor;
 638 }
 639
 640 /*****************************************************************************/
 641 /* Canvas event handler for creating barcode objects.                            */
 642 /*****************************************************************************/
 643 int
 644 gl_view_barcode_create_event_handler (GnomeCanvas *canvas,
 645                                       GdkEvent    *event,
 646                                       glView      *view)
 647 {
 648         static gdouble      x0, y0;
 649         static gboolean     dragging = FALSE;
 650         static glViewObject *view_barcode;
 651         static GObject      *object;
 652         gdouble             x, y;
 653         glTextNode          *text_node;
 654
 655         gl_debug (DEBUG_VIEW, "");
 656
 657         switch (event->type) {
 658
 659         case GDK_BUTTON_PRESS:
 660                 gl_debug (DEBUG_VIEW, "BUTTON_PRESS");
 661                 switch (event->button.button) {
 662                 case 1:
 663                         dragging = TRUE;
 664                         gnome_canvas_item_grab (canvas->root,
 665                                                 GDK_POINTER_MOTION_MASK |
 666                                                 GDK_BUTTON_RELEASE_MASK |
 667                                                 GDK_BUTTON_PRESS_MASK,
 668                                                 NULL, event->button.time);
 669                         gnome_canvas_window_to_world (canvas,
 670                                                       event->button.x,
 671                                                       event->button.y, &x, &y);
 672                         object = gl_label_barcode_new (view->label);
 673                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 674                                                      x, y);
 675                         text_node = gl_text_node_new_from_text ("123456789");
 676                         gl_label_barcode_set_data (GL_LABEL_BARCODE(object),
 677                                                    text_node);
 678                         gl_label_barcode_set_props (GL_LABEL_BARCODE(object),
 679                                                     GL_BARCODE_STYLE_POSTNET,
 680                                                     FALSE,
 681                                                     gl_color_set_opacity (gl_prefs->default_line_color, 0.5),
 682                                                     1.0);
 683                         view_barcode = gl_view_barcode_new (GL_LABEL_BARCODE(object),
 684                                                             view);
 685                         x0 = x;
 686                         y0 = y;
 687                         return TRUE;
 688
 689                 default:
 690                         return FALSE;
 691                 }
 692
 693         case GDK_BUTTON_RELEASE:
 694                 gl_debug (DEBUG_VIEW, "BUTTON_RELEASE");
 695                 switch (event->button.button) {
 696                 case 1:
 697                         dragging = FALSE;
 698                         gnome_canvas_item_ungrab (canvas->root, event->button.time);
 699                         gnome_canvas_window_to_world (canvas,
 700                                                       event->button.x,
 701                                                       event->button.y, &x, &y);
 702                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 703                                                       x, y);
 704                         gl_label_barcode_set_props (GL_LABEL_BARCODE(object),
 705                                                     GL_BARCODE_STYLE_POSTNET,
 706                                                     FALSE,
 707                                                     gl_prefs->default_line_color,
 708                                                     1.0);
 709                         gl_view_unselect_all (view);
 710                         gl_view_object_select (GL_VIEW_OBJECT(view_barcode));
 711                         gl_view_arrow_mode (view);
 712                         return TRUE;
 713
 714                 default:
 715                         return FALSE;
 716                 }
 717
 718         case GDK_MOTION_NOTIFY:
 719                 gl_debug (DEBUG_VIEW, "MOTION_NOTIFY");
 720                 if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
 721                         gnome_canvas_window_to_world (canvas,
 722                                                       event->motion.x,
 723                                                       event->motion.y, &x, &y);
 724                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 725                                                       x, y);
 726                         return TRUE;
 727                 } else {
 728                         return FALSE;
 729                 }
 730
 731         default:
 732                 return FALSE;
 733         }
 734
 735 }
 736
 737 /*--------------------------------------------------------------------------*/
 738 /* PRIVATE.  Draw barcode to item (group).                                  */
 739 /*--------------------------------------------------------------------------*/
 740 static void
 741 draw_barcode (glViewBarcode *view_barcode)
 742 {
 743         glLabelObject    *object;
 744         GnomeCanvasItem  *item;
 745         glTextNode *text_node;
 746         glBarcodeStyle style;
 747         gboolean text_flag;
 748         guint color;
 749         gdouble scale;
 750         glBarcodeLine *line;
 751         glBarcodeChar *bchar;
 752         glBarcode *gbc;
 753         GList *li;
 754         GList *item_list = NULL;
 755         GnomeCanvasPoints *points;
 756         gchar *digits, *cstring;
 757         GnomeFont *font;
 758         GnomeGlyphList *glyphlist;
 759         gdouble y_offset;
 760
 761         gl_debug (DEBUG_VIEW, "START");
 762
 763         /* Query label object and properties */
 764         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_barcode));
 765         gl_label_barcode_get_props (GL_LABEL_BARCODE(object),
 766                                     &style, &text_flag, &color, &scale);
 767         text_node = gl_label_barcode_get_data(GL_LABEL_BARCODE(object));
 768         if (text_node->field_flag) {
 769                 digits = gl_barcode_default_digits (style);
 770         } else {
 771                 digits = gl_text_node_expand (text_node, NULL);
 772         }
 773
 774         /* remove previous items from group. */
 775         for (li = view_barcode->private->item_list; li!=NULL; li = li->next) {
 776                 gl_debug (DEBUG_VIEW, "in loop");
 777                 gtk_object_destroy (GTK_OBJECT (li->data));
 778         }
 779         gl_debug (DEBUG_VIEW, "1");
 780         g_list_free (view_barcode->private->item_list);
 781         view_barcode->private->item_list = NULL;
 782         gl_debug (DEBUG_VIEW, "2");
 783
 784         /* get Gnome Font */
 785         font = gnome_font_find_closest_from_weight_slant (GL_BARCODE_FONT_FAMILY,
 786                                                           GL_BARCODE_FONT_WEIGHT,
 787                                                           FALSE,
 788                                                           10.0);
 789
 790         gbc = gl_barcode_new (style, text_flag, scale, digits);
 791         if (gbc == NULL) {
 792
 793                 cstring = _("Invalid barcode");
 794                 glyphlist = gnome_glyphlist_from_text_sized_dumb (font,
 795                                                                   color,
 796                                                                   0.0, 0.0,
 797                                                                   cstring,
 798                                                                   strlen
 799                                                                   (cstring));
 800                 y_offset = 10.0 - gnome_font_get_descender (font);
 801                 item = gl_view_object_item_new (GL_VIEW_OBJECT(view_barcode),
 802                                                 gl_canvas_hacktext_get_type (),
 803                                                 "x", 0.0,
 804                                                 "y", y_offset,
 805                                                 "glyphlist", glyphlist, NULL);
 806
 807                 view_barcode->private->item_list =
 808                         g_list_prepend (view_barcode->private->item_list, item);
 809         } else {
 810
 811                 points = gnome_canvas_points_new (2);
 812                 for (li = gbc->lines; li != NULL; li = li->next) {
 813                         line = (glBarcodeLine *) li->data;
 814
 815                         points->coords[0] = line->x;
 816                         points->coords[1] = line->y;
 817                         points->coords[2] = line->x;
 818                         points->coords[3] = line->y + line->length;
 819
 820                         item = gl_view_object_item_new (GL_VIEW_OBJECT(view_barcode),
 821                                                         gnome_canvas_line_get_type (),
 822                                                         "points", points,
 823                                                         "width_units", line->width,
 824                                                         "fill_color_rgba", color,
 825                                                         NULL);
 826                         view_barcode->private->item_list =
 827                                 g_list_prepend (view_barcode->private->item_list, item);
 828                 }
 829                 gnome_canvas_points_free (points);
 830
 831                 for (li = gbc->chars; li != NULL; li = li->next) {
 832                         bchar = (glBarcodeChar *) li->data;
 833
 834                         font = gnome_font_find_closest_from_weight_slant (
 835                                                        GL_BARCODE_FONT_FAMILY,
 836                                                        GL_BARCODE_FONT_WEIGHT,
 837                                                        FALSE, bchar->fsize);
 838                         glyphlist = gnome_glyphlist_from_text_sized_dumb (font,
 839                                                                           color,
 840                                                                           0.0,
 841                                                                           0.0,
 842                                                                           &
 843                                                                           (bchar->
 844                                                                            c),
 845                                                                           1);
 846                         y_offset =
 847                             bchar->fsize - gnome_font_get_descender (font);
 848                         item = gl_view_object_item_new (GL_VIEW_OBJECT(view_barcode),
 849                                                         gnome_canvas_hacktext_get_type (),
 850                                                         "x", bchar->x,
 851                                                         "y", bchar->y + y_offset,
 852                                                         "glyphlist", glyphlist,
 853                                                         NULL);
 854
 855                         view_barcode->private->item_list =
 856                                 g_list_prepend (view_barcode->private->item_list, item);
 857
 858                 }
 859
 860         }
 861
 862         /* clean up */
 863         gl_barcode_free (&gbc);
 864         g_free (digits);
 865
 866         gl_debug (DEBUG_VIEW, "END");
 867 }
 868