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

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  label_barcode.c:  GLabels label text object
   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 "label-barcode.h"
  24
  25 #include <glib/gmem.h>
  26 #include <glib/gstrfuncs.h>
  27 #include <glib/gmessages.h>
  28
  29 #include "pixmaps/checkerboard.xpm"
  30
  31 #include "debug.h"
  32
  33 /*========================================================*/
  34 /* Private macros and constants.                          */
  35 /*========================================================*/
  36
  37 /*========================================================*/
  38 /* Private types.                                         */
  39 /*========================================================*/
  40
  41 struct _glLabelBarcodePrivate {
  42         glTextNode     *text_node;
  43         gchar          *id;
  44         glColorNode    *color_node;
  45         gboolean        text_flag;
  46         gboolean        checksum_flag;
  47         guint           format_digits;
  48 };
  49
  50 /*========================================================*/
  51 /* Private globals.                                       */
  52 /*========================================================*/
  53
  54 static glLabelObjectClass *parent_class = NULL;
  55
  56 static guint instance = 0;
  57
  58 /*========================================================*/
  59 /* Private function prototypes.                           */
  60 /*========================================================*/
  61
  62 static void  gl_label_barcode_class_init    (glLabelBarcodeClass *klass);
  63 static void  gl_label_barcode_instance_init (glLabelBarcode      *lbc);
  64 static void  gl_label_barcode_finalize      (GObject             *object);
  65
  66 static void  copy                           (glLabelObject       *dst_object,
  67                                              glLabelObject       *src_object);
  68
  69 static void  get_size                       (glLabelObject       *object,
  70                                              gdouble             *w,
  71                                              gdouble             *h);
  72
  73 static void  set_line_color                 (glLabelObject       *object,
  74                                              glColorNode         *line_color);
  75
  76 static glColorNode *get_line_color           (glLabelObject       *object);
  77
  78
  79 \f
  80 /*****************************************************************************/
  81 /* Boilerplate object stuff.                                                 */
  82 /*****************************************************************************/
  83 GType
  84 gl_label_barcode_get_type (void)
  85 {
  86         static GType type = 0;
  87
  88         if (!type) {
  89                 static const GTypeInfo info = {
  90                         sizeof (glLabelBarcodeClass),
  91                         NULL,
  92                         NULL,
  93                         (GClassInitFunc) gl_label_barcode_class_init,
  94                         NULL,
  95                         NULL,
  96                         sizeof (glLabelBarcode),
  97                         0,
  98                         (GInstanceInitFunc) gl_label_barcode_instance_init,
  99                         NULL
 100                 };
 101
 102                 type = g_type_register_static (GL_TYPE_LABEL_OBJECT,
 103                                                "glLabelBarcode", &info, 0);
 104         }
 105
 106         return type;
 107 }
 108
 109 static void
 110 gl_label_barcode_class_init (glLabelBarcodeClass *klass)
 111 {
 112         GObjectClass       *object_class       = (GObjectClass *) klass;
 113         glLabelObjectClass *label_object_class = (glLabelObjectClass *) klass;
 114
 115         parent_class = g_type_class_peek_parent (klass);
 116
 117         label_object_class->copy           = copy;
 118         label_object_class->get_size       = get_size;
 119         label_object_class->set_line_color = set_line_color;
 120         label_object_class->get_line_color = get_line_color;
 121
 122         object_class->finalize = gl_label_barcode_finalize;
 123 }
 124
 125 static void
 126 gl_label_barcode_instance_init (glLabelBarcode *lbc)
 127 {
 128         lbc->private = g_new0 (glLabelBarcodePrivate, 1);
 129         lbc->private->color_node = gl_color_node_new_default ();
 130 }
 131
 132 static void
 133 gl_label_barcode_finalize (GObject *object)
 134 {
 135         glLabelBarcode *lbc;
 136
 137         g_return_if_fail (object && GL_IS_LABEL_BARCODE (object));
 138
 139         lbc = GL_LABEL_BARCODE (object);
 140
 141         gl_color_node_free (&(lbc->private->color_node));
 142         gl_text_node_free (&lbc->private->text_node);
 143         g_free (lbc->private);
 144
 145         G_OBJECT_CLASS (parent_class)->finalize (object);
 146 }
 147
 148 /*****************************************************************************/
 149 /* NEW label "text" object.                                               */
 150 /*****************************************************************************/
 151 GObject *
 152 gl_label_barcode_new (glLabel *label)
 153 {
 154         glLabelBarcode *lbc;
 155
 156         lbc = g_object_new (gl_label_barcode_get_type(), NULL);
 157
 158         gl_label_object_set_parent (GL_LABEL_OBJECT(lbc), label);
 159
 160         return G_OBJECT (lbc);
 161 }
 162
 163 /*****************************************************************************/
 164 /* Copy object contents.                                                     */
 165 /*****************************************************************************/
 166 static void
 167 copy (glLabelObject *dst_object,
 168       glLabelObject *src_object)
 169 {
 170         glLabelBarcode      *lbc     = (glLabelBarcode *)src_object;
 171         glLabelBarcode      *new_lbc = (glLabelBarcode *)dst_object;
 172         glTextNode          *text_node;
 173         gchar               *id;
 174         gboolean             text_flag;
 175         gboolean             checksum_flag;
 176         glColorNode         *color_node;
 177         guint                format_digits;
 178
 179         gl_debug (DEBUG_LABEL, "START");
 180
 181         g_return_if_fail (lbc && GL_IS_LABEL_BARCODE (lbc));
 182         g_return_if_fail (new_lbc && GL_IS_LABEL_BARCODE (new_lbc));
 183
 184         text_node = gl_label_barcode_get_data (lbc);
 185         gl_label_barcode_get_props (lbc, &id, &text_flag, &checksum_flag, &format_digits);
 186         color_node = get_line_color (src_object);
 187
 188         gl_label_barcode_set_data (new_lbc, text_node);
 189         gl_label_barcode_set_props (new_lbc, id, text_flag, checksum_flag, format_digits);
 190         set_line_color (dst_object, color_node);
 191
 192         gl_color_node_free (&color_node);
 193         gl_text_node_free (&text_node);
 194         g_free (id);
 195
 196         gl_debug (DEBUG_LABEL, "END");
 197 }
 198
 199
 200 /*****************************************************************************/
 201 /* Set object params.                                                        */
 202 /*****************************************************************************/
 203 void
 204 gl_label_barcode_set_data (glLabelBarcode *lbc,
 205                            glTextNode     *text_node)
 206 {
 207         gl_debug (DEBUG_LABEL, "START");
 208
 209         g_return_if_fail (lbc && GL_IS_LABEL_BARCODE (lbc));
 210
 211         if (!gl_text_node_equal (lbc->private->text_node, text_node)) {
 212
 213                 gl_text_node_free (&lbc->private->text_node);
 214                 lbc->private->text_node = gl_text_node_dup (text_node);
 215
 216                 gl_label_object_emit_changed (GL_LABEL_OBJECT(lbc));
 217
 218         }
 219
 220         gl_debug (DEBUG_LABEL, "END");
 221 }
 222
 223 void
 224 gl_label_barcode_set_props (glLabelBarcode *lbc,
 225                             gchar          *id,
 226                             gboolean        text_flag,
 227                             gboolean        checksum_flag,
 228                             guint           format_digits)
 229 {
 230         gl_debug (DEBUG_LABEL, "START");
 231
 232         g_return_if_fail (lbc && GL_IS_LABEL_BARCODE (lbc));
 233
 234         if ( ((lbc->private->id == NULL) && (id != NULL))
 235              || (g_strcasecmp (lbc->private->id, id) != 0)
 236              || (lbc->private->text_flag != text_flag)
 237              || (lbc->private->checksum_flag != checksum_flag)
 238              || (lbc->private->format_digits != format_digits)) {
 239
 240                 lbc->private->id               = g_strdup (id);
 241                 lbc->private->text_flag        = text_flag;
 242                 lbc->private->checksum_flag    = checksum_flag;
 243                 lbc->private->format_digits    = format_digits;
 244
 245                 gl_label_object_emit_changed (GL_LABEL_OBJECT(lbc));
 246
 247         }
 248
 249         gl_debug (DEBUG_LABEL, "END");
 250 }
 251
 252
 253 /*****************************************************************************/
 254 /* Get object params.                                                        */
 255 /*****************************************************************************/
 256 glTextNode *
 257 gl_label_barcode_get_data (glLabelBarcode *lbc)
 258 {
 259         g_return_val_if_fail (lbc && GL_IS_LABEL_BARCODE (lbc), NULL);
 260
 261         return gl_text_node_dup (lbc->private->text_node);
 262 }
 263
 264 void
 265 gl_label_barcode_get_props (glLabelBarcode *lbc,
 266                             gchar          **id,
 267                             gboolean       *text_flag,
 268                             gboolean       *checksum_flag,
 269                             guint          *format_digits)
 270 {
 271         g_return_if_fail (lbc && GL_IS_LABEL_BARCODE (lbc));
 272
 273         *id               = g_strdup (lbc->private->id);
 274         *text_flag        = lbc->private->text_flag;
 275         *checksum_flag    = lbc->private->checksum_flag;
 276         *format_digits    = lbc->private->format_digits;
 277 }
 278
 279 /*---------------------------------------------------------------------------*/
 280 /* PRIVATE.  Get object size method.                                         */
 281 /*---------------------------------------------------------------------------*/
 282 static void
 283 get_size (glLabelObject *object,
 284           gdouble       *w,
 285           gdouble       *h)
 286 {
 287         glLabelBarcode      *lbc = (glLabelBarcode *)object;
 288         gchar               *data;
 289         gdouble              w_parent, h_parent;
 290         glBarcode           *gbc;
 291
 292         gl_debug (DEBUG_LABEL, "START");
 293
 294         g_return_if_fail (lbc && GL_IS_LABEL_BARCODE (lbc));
 295
 296         (* parent_class->get_size) (object, &w_parent, &h_parent);
 297
 298
 299         if (lbc->private->text_node->field_flag) {
 300                 data = gl_barcode_default_digits (lbc->private->id,
 301                                                   lbc->private->format_digits);
 302         } else {
 303                 data = gl_text_node_expand (lbc->private->text_node, NULL);
 304         }
 305
 306         gbc = gl_barcode_new (lbc->private->id,
 307                               lbc->private->text_flag,
 308                               lbc->private->checksum_flag,
 309                               w_parent,
 310                               h_parent,
 311                               data);
 312
 313         if ( gbc == NULL ) {
 314                 /* Try again with default digits. */
 315                 data = gl_barcode_default_digits (lbc->private->id,
 316                                                   lbc->private->format_digits);
 317                 gbc = gl_barcode_new (lbc->private->id,
 318                                       lbc->private->text_flag,
 319                                       lbc->private->checksum_flag,
 320                                       w_parent,
 321                                       h_parent,
 322                                       data);
 323         }
 324
 325         *w = gbc->width;
 326         *h = gbc->height;
 327
 328         gl_barcode_free (&gbc);
 329         g_free (data);
 330
 331         gl_debug (DEBUG_LABEL, "END");
 332 }
 333
 334 /*---------------------------------------------------------------------------*/
 335 /* PRIVATE.  Set line color method.                                          */
 336 /*---------------------------------------------------------------------------*/
 337 static void
 338 set_line_color (glLabelObject *object,
 339                 glColorNode   *line_color_node)
 340 {
 341         glLabelBarcode *lbarcode = (glLabelBarcode *)object;
 342
 343         g_return_if_fail (lbarcode && GL_IS_LABEL_BARCODE (lbarcode));
 344
 345         if ( !gl_color_node_equal(lbarcode->private->color_node, line_color_node) ) {
 346
 347                 gl_color_node_free (&(lbarcode->private->color_node));
 348                 lbarcode->private->color_node = gl_color_node_dup (line_color_node);
 349                 gl_label_object_emit_changed (GL_LABEL_OBJECT(lbarcode));
 350         }
 351 }
 352
 353 /*---------------------------------------------------------------------------*/
 354 /* PRIVATE.  Get line color method.                                          */
 355 /*---------------------------------------------------------------------------*/
 356 static glColorNode*
 357 get_line_color (glLabelObject *object)
 358 {
 359         glLabelBarcode *lbarcode = (glLabelBarcode *)object;
 360
 361         g_return_if_fail (lbarcode && GL_IS_LABEL_BARCODE (lbarcode));
 362
 363         return gl_color_node_dup (lbarcode->private->color_node);
 364 }