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 "template.h"
  27 #include "wdgt-mini-preview.h"
  28 #include "prefs.h"
  29 #include "util.h"
  30 #include "marshal.h"
  31
  32 #include "debug.h"
  33
  34 #define WDGT_MINI_PREVIEW_WIDTH  160
  35 #define WDGT_MINI_PREVIEW_HEIGHT 200
  36
  37 /*===========================================*/
  38 /* Private types                             */
  39 /*===========================================*/
  40
  41 enum {
  42         CHANGED,
  43         LAST_SIGNAL
  44 };
  45
  46 typedef void (*glWdgtMediaSelectSignal) (GObject * object, gpointer data);
  47
  48 /*===========================================*/
  49 /* Private globals                           */
  50 /*===========================================*/
  51
  52 static GObjectClass *parent_class;
  53
  54 static gint wdgt_media_select_signals[LAST_SIGNAL] = { 0 };
  55
  56 /*===========================================*/
  57 /* Local function prototypes                 */
  58 /*===========================================*/
  59
  60 static void gl_wdgt_media_select_class_init    (glWdgtMediaSelectClass * class);
  61 static void gl_wdgt_media_select_instance_init (glWdgtMediaSelect * media_select);
  62 static void gl_wdgt_media_select_finalize      (GObject * object);
  63
  64 static void gl_wdgt_media_select_construct     (glWdgtMediaSelect * media_select);
  65
  66 static void page_size_entry_changed_cb         (GtkEntry * entry,
  67                                                 gpointer user_data);
  68 static void template_entry_changed_cb          (GtkEntry * entry,
  69                                                 gpointer user_data);
  70
  71 static void details_update                     (glWdgtMediaSelect * media_select,
  72                                                 gchar * name);
  73 \f
  74 /****************************************************************************/
  75 /* Boilerplate Object stuff.                                                */
  76 /****************************************************************************/
  77 guint
  78 gl_wdgt_media_select_get_type (void)
  79 {
  80         static guint wdgt_media_select_type = 0;
  81
  82         if (!wdgt_media_select_type) {
  83                 GTypeInfo wdgt_media_select_info = {
  84                         sizeof (glWdgtMediaSelectClass),
  85                         NULL,
  86                         NULL,
  87                         (GClassInitFunc) gl_wdgt_media_select_class_init,
  88                         NULL,
  89                         NULL,
  90                         sizeof (glWdgtMediaSelect),
  91                         0,
  92                         (GInstanceInitFunc) gl_wdgt_media_select_instance_init,
  93                 };
  94
  95                 wdgt_media_select_type =
  96                         g_type_register_static (gtk_vbox_get_type (),
  97                                                 "glWdgtMediaSelect",
  98                                                 &wdgt_media_select_info, 0);
  99         }
 100
 101         return wdgt_media_select_type;
 102 }
 103
 104 static void
 105 gl_wdgt_media_select_class_init (glWdgtMediaSelectClass * class)
 106 {
 107         GObjectClass *object_class;
 108
 109         gl_debug (DEBUG_MEDIA_SELECT, "START");
 110
 111         object_class = (GObjectClass *) class;
 112
 113         parent_class = gtk_type_class (gtk_vbox_get_type ());
 114
 115         object_class->finalize = gl_wdgt_media_select_finalize;
 116
 117         wdgt_media_select_signals[CHANGED] =
 118             g_signal_new ("changed",
 119                           G_OBJECT_CLASS_TYPE(object_class),
 120                           G_SIGNAL_RUN_LAST,
 121                           G_STRUCT_OFFSET (glWdgtMediaSelectClass, changed),
 122                           NULL, NULL,
 123                           gl_marshal_VOID__VOID,
 124                           G_TYPE_NONE, 0);
 125
 126         gl_debug (DEBUG_MEDIA_SELECT, "END");
 127 }
 128
 129 static void
 130 gl_wdgt_media_select_instance_init (glWdgtMediaSelect * media_select)
 131 {
 132         gl_debug (DEBUG_MEDIA_SELECT, "START");
 133
 134         media_select->page_size_entry = NULL;
 135         media_select->template_entry = NULL;
 136
 137         media_select->mini_preview = NULL;
 138
 139         media_select->desc_label = NULL;
 140         media_select->sheet_size_label = NULL;
 141         media_select->number_label = NULL;
 142         media_select->label_size_label = NULL;
 143
 144         gl_debug (DEBUG_MEDIA_SELECT, "END");
 145 }
 146
 147 static void
 148 gl_wdgt_media_select_finalize (GObject * object)
 149 {
 150         glWdgtMediaSelect *media_select;
 151         glWdgtMediaSelectClass *class;
 152
 153         gl_debug (DEBUG_MEDIA_SELECT, "START");
 154
 155         g_return_if_fail (object != NULL);
 156         g_return_if_fail (GL_IS_WDGT_MEDIA_SELECT (object));
 157
 158         media_select = GL_WDGT_MEDIA_SELECT (object);
 159
 160         G_OBJECT_CLASS (parent_class)->finalize (object);
 161
 162         gl_debug (DEBUG_MEDIA_SELECT, "END");
 163 }
 164
 165 GtkWidget *
 166 gl_wdgt_media_select_new (void)
 167 {
 168         glWdgtMediaSelect *media_select;
 169
 170         gl_debug (DEBUG_MEDIA_SELECT, "START");
 171
 172         media_select = g_object_new (gl_wdgt_media_select_get_type (), NULL);
 173
 174         gl_wdgt_media_select_construct (media_select);
 175
 176         gl_debug (DEBUG_MEDIA_SELECT, "END");
 177
 178         return GTK_WIDGET (media_select);
 179 }
 180
 181 /*--------------------------------------------------------------------------*/
 182 /* PRIVATE.  Construct composite widget.                                    */
 183 /*--------------------------------------------------------------------------*/
 184 static void
 185 gl_wdgt_media_select_construct (glWdgtMediaSelect * media_select)
 186 {
 187         GtkWidget *whbox, *wvbox, *wcombo, *wvbox1, *whbox1;
 188         gchar *name;
 189         GList *template_names, *page_sizes = NULL;
 190         const gchar *page_size;
 191
 192         gl_debug (DEBUG_MEDIA_SELECT, "START");
 193
 194         page_size = gl_prefs_get_page_size ();
 195
 196         wvbox = GTK_WIDGET (media_select);
 197
 198         whbox = gtk_hbox_new (FALSE, GNOME_PAD);
 199         gtk_box_pack_start (GTK_BOX (wvbox), whbox, TRUE, TRUE, GNOME_PAD);
 200
 201         /* Page size selection control */
 202         gl_debug (DEBUG_MEDIA_SELECT, "Creating page size combo...");
 203         wcombo = gtk_combo_new ();
 204         page_sizes = gl_template_get_page_size_list ();
 205         gtk_combo_set_popdown_strings (GTK_COMBO (wcombo), page_sizes);
 206         gl_template_free_page_size_list (&page_sizes);
 207         media_select->page_size_entry = GTK_COMBO (wcombo)->entry;
 208         gtk_entry_set_editable (GTK_ENTRY (media_select->page_size_entry),
 209                                 FALSE);
 210         gtk_combo_set_value_in_list (GTK_COMBO(wcombo), TRUE, FALSE);
 211         gtk_widget_set_size_request (media_select->page_size_entry, 100, -1);
 212         gtk_entry_set_text (GTK_ENTRY (media_select->page_size_entry),
 213                             page_size);
 214         gtk_box_pack_start (GTK_BOX (whbox), wcombo, FALSE, FALSE, GNOME_PAD);
 215
 216         /* Actual selection control */
 217         gl_debug (DEBUG_MEDIA_SELECT, "Creating template combo...");
 218         gl_debug (DEBUG_MEDIA_SELECT, "page_size = %s", page_size);
 219         template_names = gl_template_get_name_list (page_size);
 220         media_select->template_combo = gtk_combo_new ();
 221         gtk_combo_set_popdown_strings (GTK_COMBO (media_select->template_combo),
 222                                        template_names);
 223         gl_template_free_name_list (&template_names);
 224         media_select->template_entry =
 225             GTK_COMBO (media_select->template_combo)->entry;
 226         gtk_entry_set_editable (GTK_ENTRY (media_select->template_entry),
 227                                 FALSE);
 228         gtk_combo_set_value_in_list (GTK_COMBO(media_select->template_combo),
 229                                      TRUE, FALSE);
 230         gtk_widget_set_size_request (media_select->template_entry, 400, -1);
 231         gtk_box_pack_start (GTK_BOX (whbox), media_select->template_combo,
 232                             FALSE, FALSE, GNOME_PAD);
 233
 234         whbox = gtk_hbox_new (FALSE, GNOME_PAD);
 235         gtk_box_pack_start (GTK_BOX (wvbox), whbox, TRUE, TRUE, GNOME_PAD);
 236
 237         /* mini_preview canvas */
 238         gl_debug (DEBUG_MEDIA_SELECT, "Creating mini preview...");
 239         media_select->mini_preview = gl_wdgt_mini_preview_new ( WDGT_MINI_PREVIEW_HEIGHT,
 240                                                            WDGT_MINI_PREVIEW_WIDTH);
 241         gtk_box_pack_start (GTK_BOX (whbox), media_select->mini_preview,
 242                             FALSE, FALSE, GNOME_PAD);
 243
 244         /* Label column */
 245         gl_debug (DEBUG_MEDIA_SELECT, "Creating label column...");
 246         wvbox1 = gtk_vbox_new (FALSE, GNOME_PAD);
 247         gtk_box_pack_start (GTK_BOX (whbox), wvbox1, FALSE, FALSE, 0);
 248
 249         whbox1 = gtk_hbox_new (FALSE, 0);
 250         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 251         gtk_box_pack_start (GTK_BOX (whbox1),
 252                             gtk_label_new (_("Description:")),
 253                             FALSE, FALSE, GNOME_PAD);
 254         whbox1 = gtk_hbox_new (FALSE, 0);
 255         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 256         gtk_box_pack_start (GTK_BOX (whbox1),
 257                             gtk_label_new (_("Page size:")),
 258                             FALSE, FALSE, GNOME_PAD);
 259         whbox1 = gtk_hbox_new (FALSE, 0);
 260         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 261         gtk_box_pack_start (GTK_BOX (whbox1),
 262                             gtk_label_new (_("Label size:")),
 263                             FALSE, FALSE, GNOME_PAD);
 264         whbox1 = gtk_hbox_new (FALSE, 0);
 265         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 266         gtk_box_pack_start (GTK_BOX (whbox1),
 267                             gtk_label_new (_("Layout:")),
 268                             FALSE, FALSE, GNOME_PAD);
 269
 270         /* detail widgets column */
 271         gl_debug (DEBUG_MEDIA_SELECT, "Creating details column...");
 272         wvbox1 = gtk_vbox_new (FALSE, GNOME_PAD);
 273         gtk_box_pack_start (GTK_BOX (whbox), wvbox1, FALSE, FALSE, 0);
 274
 275         whbox1 = gtk_hbox_new (FALSE, 0);
 276         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 277         media_select->desc_label = gtk_label_new ("");
 278         gtk_box_pack_start (GTK_BOX (whbox1), media_select->desc_label,
 279                             FALSE, FALSE, GNOME_PAD);
 280         whbox1 = gtk_hbox_new (FALSE, 0);
 281         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 282         media_select->sheet_size_label = gtk_label_new ("");
 283         gtk_box_pack_start (GTK_BOX (whbox1), media_select->sheet_size_label,
 284                             FALSE, FALSE, GNOME_PAD);
 285         whbox1 = gtk_hbox_new (FALSE, 0);
 286         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 287         media_select->label_size_label = gtk_label_new ("");
 288         gtk_box_pack_start (GTK_BOX (whbox1), media_select->label_size_label,
 289                             FALSE, FALSE, GNOME_PAD);
 290         whbox1 = gtk_hbox_new (FALSE, 0);
 291         gtk_box_pack_start (GTK_BOX (wvbox1), whbox1, FALSE, FALSE, 0);
 292         media_select->number_label = gtk_label_new ("");
 293         gtk_box_pack_start (GTK_BOX (whbox1), media_select->number_label,
 294                             FALSE, FALSE, GNOME_PAD);
 295
 296         /* Update mini_preview and details from default template */
 297
 298         gl_debug (DEBUG_MEDIA_SELECT, "template_entry = %p",
 299                   media_select->template_entry);
 300         name =
 301             gtk_editable_get_chars (GTK_EDITABLE (media_select->template_entry),
 302                                     0, -1);
 303         gl_debug (DEBUG_MEDIA_SELECT, "name = \"%s\"", name);
 304         gl_wdgt_mini_preview_set_label (GL_WDGT_MINI_PREVIEW (media_select->mini_preview),
 305                                    name);
 306         details_update (media_select, name);
 307         g_free (name);
 308
 309         /* Connect signals to controls */
 310         g_signal_connect (G_OBJECT (media_select->page_size_entry), "changed",
 311                           G_CALLBACK (page_size_entry_changed_cb),
 312                           media_select);
 313         g_signal_connect (G_OBJECT (media_select->template_entry), "changed",
 314                           G_CALLBACK (template_entry_changed_cb),
 315                           media_select);
 316
 317         gl_debug (DEBUG_MEDIA_SELECT, "END");
 318 }
 319
 320 /*--------------------------------------------------------------------------*/
 321 /* PRIVATE.  modify widget due to change in selection                       */
 322 /*--------------------------------------------------------------------------*/
 323 static void
 324 page_size_entry_changed_cb (GtkEntry * entry,
 325                             gpointer user_data)
 326 {
 327         glWdgtMediaSelect *media_select = GL_WDGT_MEDIA_SELECT (user_data);
 328         gchar *page_size;
 329         GList *template_names;
 330
 331         gl_debug (DEBUG_MEDIA_SELECT, "START");
 332
 333
 334         /* Update template selections for new page size */
 335         page_size = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);
 336         if ( strlen(page_size) ) {
 337                 gl_debug (DEBUG_MEDIA_SELECT, "page_size = \"%s\"", page_size);
 338                 template_names = gl_template_get_name_list (page_size);
 339                 gtk_combo_set_popdown_strings (GTK_COMBO (media_select->template_combo),
 340                                                template_names);
 341                 gl_template_free_name_list (&template_names);
 342         }
 343         g_free (page_size);
 344
 345         gl_debug (DEBUG_MEDIA_SELECT, "END");
 346 }
 347
 348 /*--------------------------------------------------------------------------*/
 349 /* PRIVATE.  modify widget due to change in selection                       */
 350 /*--------------------------------------------------------------------------*/
 351 static void
 352 template_entry_changed_cb (GtkEntry * entry,
 353                            gpointer user_data)
 354 {
 355         glWdgtMediaSelect *media_select = GL_WDGT_MEDIA_SELECT (user_data);
 356         gchar *name;
 357
 358         gl_debug (DEBUG_MEDIA_SELECT, "START");
 359
 360         /* Update mini_preview canvas & details with template */
 361         gl_debug (DEBUG_MEDIA_SELECT, "template_entry = %p", entry);
 362         name = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);
 363         if ( strlen(name) ) {
 364                 gl_debug (DEBUG_MEDIA_SELECT, "name = \"%s\"", name);
 365                 gl_wdgt_mini_preview_set_label (GL_WDGT_MINI_PREVIEW (media_select->mini_preview),
 366                                            name);
 367                 gl_debug (DEBUG_MEDIA_SELECT, "m1");
 368                 details_update (media_select, name);
 369                 gl_debug (DEBUG_MEDIA_SELECT, "m2");
 370
 371                 /* Emit our "changed" signal */
 372                 g_signal_emit (G_OBJECT (user_data),
 373                                wdgt_media_select_signals[CHANGED], 0);
 374         }
 375         g_free (name);
 376
 377         gl_debug (DEBUG_MEDIA_SELECT, "END");
 378 }
 379
 380 /*--------------------------------------------------------------------------*/
 381 /* PRIVATE. update "details" widgets from new template.               */
 382 /*--------------------------------------------------------------------------*/
 383 static void
 384 details_update (glWdgtMediaSelect * media_select,
 385                 gchar * name)
 386 {
 387         glTemplate *template;
 388         gchar *text;
 389         glPrefsUnits units;
 390         const gchar *units_string;
 391         gdouble units_per_point;
 392
 393         gl_debug (DEBUG_MEDIA_SELECT, "START");
 394
 395         units = gl_prefs_get_units ();
 396         units_string = gl_prefs_get_units_string ();
 397         units_per_point = gl_prefs_get_units_per_point ();
 398
 399         /* Fetch template */
 400         template = gl_template_from_name (name);
 401
 402         gtk_label_set_text (GTK_LABEL (media_select->desc_label),
 403                             template->description);
 404
 405         gtk_label_set_text (GTK_LABEL (media_select->sheet_size_label),
 406                             template->page_size);
 407
 408         text = g_strdup_printf (_("%d x %d  (%d per sheet)"),
 409                                 template->nx, template->ny,
 410                                 template->nx * template->ny);
 411
 412         gtk_label_set_text (GTK_LABEL (media_select->number_label), text);
 413         g_free (text);
 414
 415         if ( units == GL_PREFS_UNITS_INCHES ) {
 416                 gchar *xstr, *ystr;
 417
 418                 xstr = gl_util_fraction (template->label_height
 419                                          * units_per_point);
 420                 ystr = gl_util_fraction (template->label_width
 421                                          * units_per_point);
 422                 text = g_strdup_printf (_("%s x %s %s"),
 423                                         xstr, ystr, units_string);
 424                 g_free (xstr);
 425                 g_free (ystr);
 426         } else {
 427                 text = g_strdup_printf (_("%.5g x %.5g %s"),
 428                                         template->label_height*units_per_point,
 429                                         template->label_width*units_per_point,
 430                                         units_string);
 431         }
 432         gtk_label_set_text (GTK_LABEL (media_select->label_size_label), text);
 433         g_free (text);
 434
 435         gl_template_free( &template );
 436
 437         gl_debug (DEBUG_MEDIA_SELECT, "END");
 438 }
 439
 440 /****************************************************************************/
 441 /* query selected label template name.                                      */
 442 /****************************************************************************/
 443 gchar *
 444 gl_wdgt_media_select_get_name (glWdgtMediaSelect * media_select)
 445 {
 446         gl_debug (DEBUG_MEDIA_SELECT, "");
 447         return
 448             gtk_editable_get_chars (GTK_EDITABLE (media_select->template_entry),
 449                                     0, -1);
 450 }
 451
 452 /****************************************************************************/
 453 /* set selected label template name.                                        */
 454 /****************************************************************************/
 455 void
 456 gl_wdgt_media_select_set_name (glWdgtMediaSelect * media_select,
 457                                gchar * name)
 458 {
 459         gint pos;
 460
 461         gl_debug (DEBUG_MEDIA_SELECT, "START");
 462
 463         g_signal_handlers_block_by_func (G_OBJECT(media_select->template_entry),
 464                                         G_CALLBACK(template_entry_changed_cb),
 465                                         media_select);
 466         gtk_editable_delete_text (GTK_EDITABLE (media_select->template_entry),
 467                                   0, -1);
 468         g_signal_handlers_unblock_by_func (G_OBJECT(media_select->template_entry),
 469                                            G_CALLBACK(template_entry_changed_cb),
 470                                            media_select);
 471
 472         pos = 0;
 473         gtk_editable_insert_text (GTK_EDITABLE (media_select->template_entry),
 474                                   name, strlen (name), &pos);
 475
 476         gl_debug (DEBUG_MEDIA_SELECT, "END");
 477 }
 478
 479 /****************************************************************************/
 480 /* query selected label template page size.                                 */
 481 /****************************************************************************/
 482 gchar *
 483 gl_wdgt_media_select_get_page_size (glWdgtMediaSelect * media_select)
 484 {
 485         gl_debug (DEBUG_MEDIA_SELECT, "");
 486
 487         return
 488             gtk_editable_get_chars (GTK_EDITABLE
 489                                     (media_select->page_size_entry), 0, -1);
 490 }
 491
 492 /****************************************************************************/
 493 /* set selected label template page size.                                   */
 494 /****************************************************************************/
 495 void
 496 gl_wdgt_media_select_set_page_size (glWdgtMediaSelect * media_select,
 497                                     gchar * page_size)
 498 {
 499         gint pos;
 500
 501         gl_debug (DEBUG_MEDIA_SELECT, "START");
 502
 503         g_signal_handlers_block_by_func (G_OBJECT(media_select->page_size_entry),
 504                                         G_CALLBACK(page_size_entry_changed_cb),
 505                                         media_select);
 506         gtk_editable_delete_text (GTK_EDITABLE (media_select->page_size_entry),
 507                                   0, -1);
 508         g_signal_handlers_unblock_by_func (G_OBJECT(media_select->page_size_entry),
 509                                           G_CALLBACK(page_size_entry_changed_cb),
 510                                           media_select);
 511
 512         pos = 0;
 513         gtk_editable_insert_text (GTK_EDITABLE (media_select->page_size_entry),
 514                                   page_size, strlen (page_size), &pos);
 515
 516         gl_debug (DEBUG_MEDIA_SELECT, "END");
 517 }