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