git.sur5r.net Git - glabels/blob - glabels2/src/wdgt-media-select.c

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  wdgt_media_select.c:  media selection widget module
   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 <config.h>
  24
  25 #include "wdgt-media-select.h"
  26 #include "hig.h"
  27 #include "template.h"
  28 #include "wdgt-mini-preview.h"
  29 #include "prefs.h"
  30 #include "util.h"
  31 #include "marshal.h"
  32
  33 #include "debug.h"
  34
  35 #define WDGT_MINI_PREVIEW_WIDTH  160
  36 #define WDGT_MINI_PREVIEW_HEIGHT 200
  37
  38 /*===========================================*/
  39 /* Private types                             */
  40 /*===========================================*/
  41
  42 enum {
  43         CHANGED,
  44         LAST_SIGNAL
  45 };
  46
  47 typedef void (*glWdgtMediaSelectSignal) (GObject * object, gpointer data);
  48
  49 /*===========================================*/
  50 /* Private globals                           */
  51 /*===========================================*/
  52
  53 static GObjectClass *parent_class;
  54
  55 static gint wdgt_media_select_signals[LAST_SIGNAL] = { 0 };
  56
  57 /*===========================================*/
  58 /* Local function prototypes                 */
  59 /*===========================================*/
  60
  61 static void gl_wdgt_media_select_class_init    (glWdgtMediaSelectClass * class);
  62 static void gl_wdgt_media_select_instance_init (glWdgtMediaSelect * media_select);
  63 static void gl_wdgt_media_select_finalize      (GObject * object);
  64
  65 static void gl_wdgt_media_select_construct     (glWdgtMediaSelect * media_select);
  66
  67 static void page_size_entry_changed_cb         (GtkEntry * entry,
  68                                                 gpointer user_data);
  69 static void template_entry_changed_cb          (GtkEntry * entry,
  70                                                 gpointer user_data);
  71
  72 static void details_update                     (glWdgtMediaSelect * media_select,
  73                                                 gchar * name);
  74 \f
  75 /****************************************************************************/
  76 /* Boilerplate Object stuff.                                                */
  77 /****************************************************************************/
  78 guint
  79 gl_wdgt_media_select_get_type (void)
  80 {
  81         static guint wdgt_media_select_type = 0;
  82
  83         if (!wdgt_media_select_type) {
  84                 GTypeInfo wdgt_media_select_info = {
  85                         sizeof (glWdgtMediaSelectClass),
  86                         NULL,
  87                         NULL,
  88                         (GClassInitFunc) gl_wdgt_media_select_class_init,
  89                         NULL,
  90                         NULL,
  91                         sizeof (glWdgtMediaSelect),
  92                         0,
  93                         (GInstanceInitFunc) gl_wdgt_media_select_instance_init,
  94                 };
  95
  96                 wdgt_media_select_type =
  97                         g_type_register_static (gtk_vbox_get_type (),
  98                                                 "glWdgtMediaSelect",
  99                                                 &wdgt_media_select_info, 0);
 100         }
 101
 102         return wdgt_media_select_type;
 103 }
 104
 105 static void
 106 gl_wdgt_media_select_class_init (glWdgtMediaSelectClass * class)
 107 {
 108         GObjectClass *object_class;
 109
 110         gl_debug (DEBUG_MEDIA_SELECT, "START");
 111
 112         object_class = (GObjectClass *) class;
 113
 114         parent_class = gtk_type_class (gtk_vbox_get_type ());
 115
 116         object_class->finalize = gl_wdgt_media_select_finalize;
 117
 118         wdgt_media_select_signals[CHANGED] =
 119             g_signal_new ("changed",
 120                           G_OBJECT_CLASS_TYPE(object_class),
 121                           G_SIGNAL_RUN_LAST,
 122                           G_STRUCT_OFFSET (glWdgtMediaSelectClass, changed),
 123                           NULL, NULL,
 124                           gl_marshal_VOID__VOID,
 125                           G_TYPE_NONE, 0);
 126
 127         gl_debug (DEBUG_MEDIA_SELECT, "END");
 128 }
 129
 130 static void
 131 gl_wdgt_media_select_instance_init (glWdgtMediaSelect * media_select)
 132 {
 133         gl_debug (DEBUG_MEDIA_SELECT, "START");
 134
 135         media_select->page_size_entry = NULL;
 136         media_select->template_entry = NULL;
 137
 138         media_select->mini_preview = NULL;
 139
 140         media_select->desc_label = NULL;
 141         media_select->sheet_size_label = NULL;
 142         media_select->number_label = NULL;
 143         media_select->label_size_label = NULL;
 144
 145         gl_debug (DEBUG_MEDIA_SELECT, "END");
 146 }
 147
 148 static void
 149 gl_wdgt_media_select_finalize (GObject * object)
 150 {
 151         glWdgtMediaSelect *media_select;
 152         glWdgtMediaSelectClass *class;
 153
 154         gl_debug (DEBUG_MEDIA_SELECT, "START");
 155
 156         g_return_if_fail (object != NULL);
 157         g_return_if_fail (GL_IS_WDGT_MEDIA_SELECT (object));
 158
 159         media_select = GL_WDGT_MEDIA_SELECT (object);
 160
 161         G_OBJECT_CLASS (parent_class)->finalize (object);
 162
 163         gl_debug (DEBUG_MEDIA_SELECT, "END");
 164 }
 165
 166 GtkWidget *
 167 gl_wdgt_media_select_new (void)
 168 {
 169         glWdgtMediaSelect *media_select;
 170
 171         gl_debug (DEBUG_MEDIA_SELECT, "START");
 172
 173         media_select = g_object_new (gl_wdgt_media_select_get_type (), NULL);
 174
 175         gl_wdgt_media_select_construct (media_select);
 176
 177         gl_debug (DEBUG_MEDIA_SELECT, "END");
 178
 179         return GTK_WIDGET (media_select);
 180 }
 181
 182 /*--------------------------------------------------------------------------*/
 183 /* PRIVATE.  Construct composite widget.                                    */
 184 /*--------------------------------------------------------------------------*/
 185 static void
 186 gl_wdgt_media_select_construct (glWdgtMediaSelect * media_select)
 187 {
 188         GtkWidget *whbox, *wvbox, *wcombo, *wvbox1, *whbox1;
 189         gchar *name;
 190         GList *template_names, *page_sizes = NULL;
 191         const gchar *page_size;
 192
 193         gl_debug (DEBUG_MEDIA_SELECT, "START");
 194
 195         page_size = gl_prefs_get_page_size ();
 196
 197         wvbox = GTK_WIDGET (media_select);
 198         gtk_box_set_spacing (GTK_BOX(wvbox), GL_HIG_SPACING);
 199
 200         whbox = gtk_hbox_new (FALSE, GL_HIG_SPACING);
 201         gtk_box_pack_start (GTK_BOX (wvbox), whbox, TRUE, TRUE, 0);
 202
 203         /* Page size selection control */
 204         gl_debug (DEBUG_MEDIA_SELECT, "Creating page size combo...");
 205         wcombo = gtk_combo_new ();
 206         page_sizes = gl_template_get_page_size_list ();
 207         gtk_combo_set_popdown_strings (GTK_COMBO (wcombo), page_sizes);
 208         gl_template_free_page_size_list (&page_sizes);
 209         media_select->page_size_entry = GTK_COMBO (wcombo)->entry;
 210         gtk_entry_set_editable (GTK_ENTRY (media_select->page_size_entry),
 211                                 FALSE);
 212         gtk_combo_set_value_in_list (GTK_COMBO(wcombo), TRUE, FALSE);
 213         gtk_widget_set_size_request (media_select->page_size_entry, 100, -1);
 214         gtk_entry_set_text (GTK_ENTRY (media_select->page_size_entry),
 215                             page_size);
 216         gtk_box_pack_start (GTK_BOX (whbox), wcombo, FALSE, FALSE, 0);
 217
 218         /* Actual selection control */
 219         gl_debug (DEBUG_MEDIA_SELECT, "Creating template combo...");
 220         gl_debug (DEBUG_MEDIA_SELECT, "page_size = %s", page_size);
 221         template_names = gl_template_get_name_list (page_size);
 222         media_select->template_combo = gtk_combo_new ();
 223         gtk_combo_set_popdown_strings (GTK_COMBO (media_select->template_combo),
 224                                        template_names);
 225         gl_template_free_name_list (&template_names);
 226         media_select->template_entry =
 227             GTK_COMBO (media_select->template_combo)->entry;
 228         gtk_entry_set_editable (GTK_ENTRY (media_select->template_entry),
 229                                 FALSE);
 230         gtk_combo_set_value_in_list (GTK_COMBO(media_select->template_combo),
 231                                      TRUE, FALSE);
 232         gtk_widget_set_size_request (media_select->template_entry, 400, -1);
 233         gtk_box_pack_start (GTK_BOX (whbox), media_select->template_combo,
 234                             FALSE, FALSE, 0);
 235
 236         whbox = gtk_hbox_new (FALSE, GL_HIG_SPACING);
 237         gtk_box_pack_start (GTK_BOX (wvbox), whbox, TRUE, TRUE, 0);
 238
 239         /* mini_preview canvas */
 240         gl_debug (DEBUG_MEDIA_SELECT, "Creating mini preview...");
 241         media_select->mini_preview = gl_wdgt_mini_preview_new ( WDGT_MINI_PREVIEW_HEIGHT,
 242                                                            WDGT_MINI_PREVIEW_WIDTH);
 243         gtk_box_pack_start (GTK_BOX (whbox), media_select->mini_preview,
 244                             FALSE, FALSE, 0);
 245
 246         /* Label column */
 247         gl_debug (DEBUG_MEDIA_SELECT, "Creating label column...");
 248         wvbox1 = gtk_vbox_new (FALSE, GL_HIG_SPACING);
 249         gtk_box_pack_start (GTK_BOX (whbox), wvbox1, FALSE, FALSE, 0);
 250
 251         whbox1 = gtk_hbox_new (FALSE, 0);
 252         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 253         gtk_box_pack_start (GTK_BOX (whbox1),
 254                             gtk_label_new (_("Description:")),
 255                             FALSE, FALSE, 0);
 256         whbox1 = gtk_hbox_new (FALSE, 0);
 257         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 258         gtk_box_pack_start (GTK_BOX (whbox1),
 259                             gtk_label_new (_("Page size:")),
 260                             FALSE, FALSE, 0);
 261         whbox1 = gtk_hbox_new (FALSE, 0);
 262         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 263         gtk_box_pack_start (GTK_BOX (whbox1),
 264                             gtk_label_new (_("Label size:")),
 265                             FALSE, FALSE, 0);
 266         whbox1 = gtk_hbox_new (FALSE, 0);
 267         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 268         gtk_box_pack_start (GTK_BOX (whbox1),
 269                             gtk_label_new (_("Layout:")),
 270                             FALSE, FALSE, 0);
 271
 272         /* detail widgets column */
 273         gl_debug (DEBUG_MEDIA_SELECT, "Creating details column...");
 274         wvbox1 = gtk_vbox_new (FALSE, GL_HIG_SPACING);
 275         gtk_box_pack_start (GTK_BOX (whbox), wvbox1, FALSE, FALSE, 0);
 276
 277         whbox1 = gtk_hbox_new (FALSE, 0);
 278         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 279         media_select->desc_label = gtk_label_new ("");
 280         gtk_box_pack_start (GTK_BOX (whbox1), media_select->desc_label,
 281                             FALSE, FALSE, 0);
 282         whbox1 = gtk_hbox_new (FALSE, 0);
 283         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 284         media_select->sheet_size_label = gtk_label_new ("");
 285         gtk_box_pack_start (GTK_BOX (whbox1), media_select->sheet_size_label,
 286                             FALSE, FALSE, 0);
 287         whbox1 = gtk_hbox_new (FALSE, 0);
 288         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 289         media_select->label_size_label = gtk_label_new ("");
 290         gtk_box_pack_start (GTK_BOX (whbox1), media_select->label_size_label,
 291                             FALSE, FALSE, 0);
 292         whbox1 = gtk_hbox_new (FALSE, 0);
 293         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 294         media_select->number_label = gtk_label_new ("");
 295         gtk_box_pack_start (GTK_BOX (whbox1), media_select->number_label,
 296                             FALSE, FALSE, 0);
 297
 298         /* Update mini_preview and details from default template */
 299
 300         gl_debug (DEBUG_MEDIA_SELECT, "template_entry = %p",
 301                   media_select->template_entry);
 302         name =
 303             gtk_editable_get_chars (GTK_EDITABLE (media_select->template_entry),
 304                                     0, -1);
 305         gl_debug (DEBUG_MEDIA_SELECT, "name = \"%s\"", name);
 306         gl_wdgt_mini_preview_set_label (GL_WDGT_MINI_PREVIEW (media_select->mini_preview),
 307                                    name);
 308         details_update (media_select, name);
 309         g_free (name);
 310
 311         /* Connect signals to controls */
 312         g_signal_connect (G_OBJECT (media_select->page_size_entry), "changed",
 313                           G_CALLBACK (page_size_entry_changed_cb),
 314                           media_select);
 315         g_signal_connect (G_OBJECT (media_select->template_entry), "changed",
 316                           G_CALLBACK (template_entry_changed_cb),
 317                           media_select);
 318
 319         gl_debug (DEBUG_MEDIA_SELECT, "END");
 320 }
 321
 322 /*--------------------------------------------------------------------------*/
 323 /* PRIVATE.  modify widget due to change in selection                       */
 324 /*--------------------------------------------------------------------------*/
 325 static void
 326 page_size_entry_changed_cb (GtkEntry * entry,
 327                             gpointer user_data)
 328 {
 329         glWdgtMediaSelect *media_select = GL_WDGT_MEDIA_SELECT (user_data);
 330         gchar *page_size;
 331         GList *template_names;
 332
 333         gl_debug (DEBUG_MEDIA_SELECT, "START");
 334
 335
 336         /* Update template selections for new page size */
 337         page_size = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);
 338         if ( strlen(page_size) ) {
 339                 gl_debug (DEBUG_MEDIA_SELECT, "page_size = \"%s\"", page_size);
 340                 template_names = gl_template_get_name_list (page_size);
 341                 gtk_combo_set_popdown_strings (GTK_COMBO (media_select->template_combo),
 342                                                template_names);
 343                 gl_template_free_name_list (&template_names);
 344         }
 345         g_free (page_size);
 346
 347         gl_debug (DEBUG_MEDIA_SELECT, "END");
 348 }
 349
 350 /*--------------------------------------------------------------------------*/
 351 /* PRIVATE.  modify widget due to change in selection                       */
 352 /*--------------------------------------------------------------------------*/
 353 static void
 354 template_entry_changed_cb (GtkEntry * entry,
 355                            gpointer user_data)
 356 {
 357         glWdgtMediaSelect *media_select = GL_WDGT_MEDIA_SELECT (user_data);
 358         gchar *name;
 359
 360         gl_debug (DEBUG_MEDIA_SELECT, "START");
 361
 362         /* Update mini_preview canvas & details with template */
 363         gl_debug (DEBUG_MEDIA_SELECT, "template_entry = %p", entry);
 364         name = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);
 365         if ( strlen(name) ) {
 366                 gl_debug (DEBUG_MEDIA_SELECT, "name = \"%s\"", name);
 367                 gl_wdgt_mini_preview_set_label (GL_WDGT_MINI_PREVIEW (media_select->mini_preview),
 368                                            name);
 369                 gl_debug (DEBUG_MEDIA_SELECT, "m1");
 370                 details_update (media_select, name);
 371                 gl_debug (DEBUG_MEDIA_SELECT, "m2");
 372
 373                 /* Emit our "changed" signal */
 374                 g_signal_emit (G_OBJECT (user_data),
 375                                wdgt_media_select_signals[CHANGED], 0);
 376         }
 377         g_free (name);
 378
 379         gl_debug (DEBUG_MEDIA_SELECT, "END");
 380 }
 381
 382 /*--------------------------------------------------------------------------*/
 383 /* PRIVATE. update "details" widgets from new template.               */
 384 /*--------------------------------------------------------------------------*/
 385 static void
 386 details_update (glWdgtMediaSelect * media_select,
 387                 gchar * name)
 388 {
 389         glTemplate *template;
 390         gchar *text;
 391         glPrefsUnits units;
 392         const gchar *units_string;
 393         gdouble units_per_point;
 394
 395         gl_debug (DEBUG_MEDIA_SELECT, "START");
 396
 397         units = gl_prefs_get_units ();
 398         units_string = gl_prefs_get_units_string ();
 399         units_per_point = gl_prefs_get_units_per_point ();
 400
 401         /* Fetch template */
 402         template = gl_template_from_name (name);
 403
 404         gtk_label_set_text (GTK_LABEL (media_select->desc_label),
 405                             template->description);
 406
 407         gtk_label_set_text (GTK_LABEL (media_select->sheet_size_label),
 408                             template->page_size);
 409
 410         text = gl_template_get_layout_desc (template);
 411         gtk_label_set_text (GTK_LABEL (media_select->number_label), text);
 412         g_free (text);
 413
 414         text = gl_template_get_label_size_desc (template);
 415         gtk_label_set_text (GTK_LABEL (media_select->label_size_label), text);
 416         g_free (text);
 417
 418         gl_template_free( &template );
 419
 420         gl_debug (DEBUG_MEDIA_SELECT, "END");
 421 }
 422
 423 /****************************************************************************/
 424 /* query selected label template name.                                      */
 425 /****************************************************************************/
 426 gchar *
 427 gl_wdgt_media_select_get_name (glWdgtMediaSelect * media_select)
 428 {
 429         gl_debug (DEBUG_MEDIA_SELECT, "");
 430         return
 431             gtk_editable_get_chars (GTK_EDITABLE (media_select->template_entry),
 432                                     0, -1);
 433 }
 434
 435 /****************************************************************************/
 436 /* set selected label template name.                                        */
 437 /****************************************************************************/
 438 void
 439 gl_wdgt_media_select_set_name (glWdgtMediaSelect * media_select,
 440                                gchar * name)
 441 {
 442         gint pos;
 443
 444         gl_debug (DEBUG_MEDIA_SELECT, "START");
 445
 446         g_signal_handlers_block_by_func (G_OBJECT(media_select->template_entry),
 447                                         G_CALLBACK(template_entry_changed_cb),
 448                                         media_select);
 449         gtk_editable_delete_text (GTK_EDITABLE (media_select->template_entry),
 450                                   0, -1);
 451         g_signal_handlers_unblock_by_func (G_OBJECT(media_select->template_entry),
 452                                            G_CALLBACK(template_entry_changed_cb),
 453                                            media_select);
 454
 455         pos = 0;
 456         gtk_editable_insert_text (GTK_EDITABLE (media_select->template_entry),
 457                                   name, strlen (name), &pos);
 458
 459         gl_debug (DEBUG_MEDIA_SELECT, "END");
 460 }
 461
 462 /****************************************************************************/
 463 /* query selected label template page size.                                 */
 464 /****************************************************************************/
 465 gchar *
 466 gl_wdgt_media_select_get_page_size (glWdgtMediaSelect * media_select)
 467 {
 468         gl_debug (DEBUG_MEDIA_SELECT, "");
 469
 470         return
 471             gtk_editable_get_chars (GTK_EDITABLE
 472                                     (media_select->page_size_entry), 0, -1);
 473 }
 474
 475 /****************************************************************************/
 476 /* set selected label template page size.                                   */
 477 /****************************************************************************/
 478 void
 479 gl_wdgt_media_select_set_page_size (glWdgtMediaSelect * media_select,
 480                                     gchar * page_size)
 481 {
 482         gint pos;
 483
 484         gl_debug (DEBUG_MEDIA_SELECT, "START");
 485
 486         g_signal_handlers_block_by_func (G_OBJECT(media_select->page_size_entry),
 487                                         G_CALLBACK(page_size_entry_changed_cb),
 488                                         media_select);
 489         gtk_editable_delete_text (GTK_EDITABLE (media_select->page_size_entry),
 490                                   0, -1);
 491         g_signal_handlers_unblock_by_func (G_OBJECT(media_select->page_size_entry),
 492                                           G_CALLBACK(page_size_entry_changed_cb),
 493                                           media_select);
 494
 495         pos = 0;
 496         gtk_editable_insert_text (GTK_EDITABLE (media_select->page_size_entry),
 497                                   page_size, strlen (page_size), &pos);
 498
 499         gl_debug (DEBUG_MEDIA_SELECT, "END");
 500 }