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 (gl_hig_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 = g_type_class_peek_parent (class);
 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, *wlabel;
 189         GtkSizeGroup *label_size_group;
 190         gchar *name;
 191         GList *template_names, *page_sizes = NULL;
 192         const gchar *page_size;
 193
 194         gl_debug (DEBUG_MEDIA_SELECT, "START");
 195
 196         page_size = gl_prefs_get_page_size ();
 197
 198         wvbox = GTK_WIDGET (media_select);
 199
 200         whbox = gl_hig_hbox_new ();
 201         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox), whbox);
 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         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox), wcombo);
 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         media_select->template_entry =
 226             GTK_COMBO (media_select->template_combo)->entry;
 227         gtk_entry_set_editable (GTK_ENTRY (media_select->template_entry),
 228                                 FALSE);
 229         gtk_combo_set_value_in_list (GTK_COMBO(media_select->template_combo),
 230                                      TRUE, FALSE);
 231         gtk_widget_set_size_request (media_select->template_entry, 400, -1);
 232         gtk_entry_set_text (GTK_ENTRY (media_select->template_entry),
 233                             template_names->data);
 234         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox),
 235                                 media_select->template_combo);
 236         gl_template_free_name_list (&template_names);
 237
 238         whbox = gl_hig_hbox_new ();
 239         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox), whbox);
 240
 241         /* mini_preview canvas */
 242         gl_debug (DEBUG_MEDIA_SELECT, "Creating mini preview...");
 243         media_select->mini_preview = gl_wdgt_mini_preview_new ( WDGT_MINI_PREVIEW_HEIGHT,
 244                                                            WDGT_MINI_PREVIEW_WIDTH);
 245         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox),
 246                                 media_select->mini_preview);
 247
 248         /* ---- Information area ---- */
 249         wvbox1 = gl_hig_vbox_new (GL_HIG_VBOX_INNER);
 250         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox), wvbox1);
 251         label_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
 252
 253         /* blank line */
 254         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox1), gtk_label_new (""));
 255
 256         /* Description line */
 257         whbox1 = gl_hig_hbox_new ();
 258         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox1), whbox1);
 259         wlabel = gtk_label_new (_("Description:"));
 260         gtk_size_group_add_widget (label_size_group, wlabel);
 261         gtk_misc_set_alignment (GTK_MISC(wlabel), 0.0, 0.0);
 262         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1), wlabel);
 263         media_select->desc_label = gtk_label_new ("");
 264         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1), media_select->desc_label);
 265
 266         /* Page size line */
 267         whbox1 = gl_hig_hbox_new ();
 268         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox1), whbox1);
 269         wlabel = gtk_label_new (_("Page size:"));
 270         gtk_size_group_add_widget (label_size_group, wlabel);
 271         gtk_misc_set_alignment (GTK_MISC(wlabel), 0.0, 0.0);
 272         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1), wlabel);
 273         media_select->sheet_size_label = gtk_label_new ("");
 274         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1),
 275                                 media_select->sheet_size_label);
 276
 277         /* Label size line */
 278         whbox1 = gl_hig_hbox_new ();
 279         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox1), whbox1);
 280         wlabel = gtk_label_new (_("Label size:"));
 281         gtk_size_group_add_widget (label_size_group, wlabel);
 282         gtk_misc_set_alignment (GTK_MISC(wlabel), 0.0, 0.0);
 283         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1), wlabel);
 284         media_select->label_size_label = gtk_label_new ("");
 285         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1),
 286                                 media_select->label_size_label);
 287
 288         /* Layout line */
 289         whbox1 = gl_hig_hbox_new ();
 290         gl_hig_vbox_add_widget (GL_HIG_VBOX(wvbox1), whbox1);
 291         wlabel = gtk_label_new (_("Layout:"));
 292         gtk_size_group_add_widget (label_size_group, wlabel);
 293         gtk_misc_set_alignment (GTK_MISC(wlabel), 0.0, 0.0);
 294         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1), wlabel);
 295         media_select->number_label = gtk_label_new ("");
 296         gl_hig_hbox_add_widget (GL_HIG_HBOX(whbox1),
 297                                 media_select->number_label);
 298
 299         /* Update mini_preview and details from default template */
 300
 301         gl_debug (DEBUG_MEDIA_SELECT, "template_entry = %p",
 302                   media_select->template_entry);
 303         name =
 304             gtk_editable_get_chars (GTK_EDITABLE (media_select->template_entry),
 305                                     0, -1);
 306         gl_debug (DEBUG_MEDIA_SELECT, "name = \"%s\"", name);
 307         gl_wdgt_mini_preview_set_label (GL_WDGT_MINI_PREVIEW (media_select->mini_preview),
 308                                    name);
 309         details_update (media_select, name);
 310         g_free (name);
 311
 312         /* Connect signals to controls */
 313         g_signal_connect (G_OBJECT (media_select->page_size_entry), "changed",
 314                           G_CALLBACK (page_size_entry_changed_cb),
 315                           media_select);
 316         g_signal_connect (G_OBJECT (media_select->template_entry), "changed",
 317                           G_CALLBACK (template_entry_changed_cb),
 318                           media_select);
 319
 320         gl_debug (DEBUG_MEDIA_SELECT, "END");
 321 }
 322
 323 /*--------------------------------------------------------------------------*/
 324 /* PRIVATE.  modify widget due to change in selection                       */
 325 /*--------------------------------------------------------------------------*/
 326 static void
 327 page_size_entry_changed_cb (GtkEntry * entry,
 328                             gpointer user_data)
 329 {
 330         glWdgtMediaSelect *media_select = GL_WDGT_MEDIA_SELECT (user_data);
 331         gchar *page_size;
 332         GList *template_names;
 333
 334         gl_debug (DEBUG_MEDIA_SELECT, "START");
 335
 336
 337         /* Update template selections for new page size */
 338         page_size = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);
 339         if ( strlen(page_size) ) {
 340                 gl_debug (DEBUG_MEDIA_SELECT, "page_size = \"%s\"", page_size);
 341                 template_names = gl_template_get_name_list (page_size);
 342                 gtk_combo_set_popdown_strings (GTK_COMBO (media_select->template_combo),
 343                                                template_names);
 344                 gtk_entry_set_text (GTK_ENTRY (media_select->template_entry),
 345                                     template_names->data);
 346                 gl_template_free_name_list (&template_names);
 347         }
 348         g_free (page_size);
 349
 350         gl_debug (DEBUG_MEDIA_SELECT, "END");
 351 }
 352
 353 /*--------------------------------------------------------------------------*/
 354 /* PRIVATE.  modify widget due to change in selection                       */
 355 /*--------------------------------------------------------------------------*/
 356 static void
 357 template_entry_changed_cb (GtkEntry * entry,
 358                            gpointer user_data)
 359 {
 360         glWdgtMediaSelect *media_select = GL_WDGT_MEDIA_SELECT (user_data);
 361         gchar *name;
 362
 363         gl_debug (DEBUG_MEDIA_SELECT, "START");
 364
 365         /* Update mini_preview canvas & details with template */
 366         gl_debug (DEBUG_MEDIA_SELECT, "template_entry = %p", entry);
 367         name = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);
 368         if ( strlen(name) ) {
 369                 gl_debug (DEBUG_MEDIA_SELECT, "name = \"%s\"", name);
 370                 gl_wdgt_mini_preview_set_label (GL_WDGT_MINI_PREVIEW (media_select->mini_preview),
 371                                            name);
 372                 gl_debug (DEBUG_MEDIA_SELECT, "m1");
 373                 details_update (media_select, name);
 374                 gl_debug (DEBUG_MEDIA_SELECT, "m2");
 375
 376                 /* Emit our "changed" signal */
 377                 g_signal_emit (G_OBJECT (user_data),
 378                                wdgt_media_select_signals[CHANGED], 0);
 379         }
 380         g_free (name);
 381
 382         gl_debug (DEBUG_MEDIA_SELECT, "END");
 383 }
 384
 385 /*--------------------------------------------------------------------------*/
 386 /* PRIVATE. update "details" widgets from new template.               */
 387 /*--------------------------------------------------------------------------*/
 388 static void
 389 details_update (glWdgtMediaSelect * media_select,
 390                 gchar * name)
 391 {
 392         glTemplate *template;
 393         gchar *text;
 394         glPrefsUnits units;
 395         const gchar *units_string;
 396         gdouble units_per_point;
 397
 398         gl_debug (DEBUG_MEDIA_SELECT, "START");
 399
 400         units = gl_prefs_get_units ();
 401         units_string = gl_prefs_get_units_string ();
 402         units_per_point = gl_prefs_get_units_per_point ();
 403
 404         /* Fetch template */
 405         template = gl_template_from_name (name);
 406
 407         gtk_label_set_text (GTK_LABEL (media_select->desc_label),
 408                             template->description);
 409
 410         gtk_label_set_text (GTK_LABEL (media_select->sheet_size_label),
 411                             template->page_size);
 412
 413         text = gl_template_get_layout_desc (template);
 414         gtk_label_set_text (GTK_LABEL (media_select->number_label), text);
 415         g_free (text);
 416
 417         text = gl_template_get_label_size_desc (template);
 418         gtk_label_set_text (GTK_LABEL (media_select->label_size_label), text);
 419         g_free (text);
 420
 421         gl_template_free( &template );
 422
 423         gl_debug (DEBUG_MEDIA_SELECT, "END");
 424 }
 425
 426 /****************************************************************************/
 427 /* query selected label template name.                                      */
 428 /****************************************************************************/
 429 gchar *
 430 gl_wdgt_media_select_get_name (glWdgtMediaSelect * media_select)
 431 {
 432         gl_debug (DEBUG_MEDIA_SELECT, "");
 433         return
 434             gtk_editable_get_chars (GTK_EDITABLE (media_select->template_entry),
 435                                     0, -1);
 436 }
 437
 438 /****************************************************************************/
 439 /* set selected label template name.                                        */
 440 /****************************************************************************/
 441 void
 442 gl_wdgt_media_select_set_name (glWdgtMediaSelect * media_select,
 443                                gchar * name)
 444 {
 445         gint pos;
 446
 447         gl_debug (DEBUG_MEDIA_SELECT, "START");
 448
 449         g_signal_handlers_block_by_func (G_OBJECT(media_select->template_entry),
 450                                         G_CALLBACK(template_entry_changed_cb),
 451                                         media_select);
 452         gtk_editable_delete_text (GTK_EDITABLE (media_select->template_entry),
 453                                   0, -1);
 454         g_signal_handlers_unblock_by_func (G_OBJECT(media_select->template_entry),
 455                                            G_CALLBACK(template_entry_changed_cb),
 456                                            media_select);
 457
 458         pos = 0;
 459         gtk_editable_insert_text (GTK_EDITABLE (media_select->template_entry),
 460                                   name, strlen (name), &pos);
 461
 462         gl_debug (DEBUG_MEDIA_SELECT, "END");
 463 }
 464
 465 /****************************************************************************/
 466 /* query selected label template page size.                                 */
 467 /****************************************************************************/
 468 gchar *
 469 gl_wdgt_media_select_get_page_size (glWdgtMediaSelect * media_select)
 470 {
 471         gl_debug (DEBUG_MEDIA_SELECT, "");
 472
 473         return
 474             gtk_editable_get_chars (GTK_EDITABLE
 475                                     (media_select->page_size_entry), 0, -1);
 476 }
 477
 478 /****************************************************************************/
 479 /* set selected label template page size.                                   */
 480 /****************************************************************************/
 481 void
 482 gl_wdgt_media_select_set_page_size (glWdgtMediaSelect * media_select,
 483                                     gchar * page_size)
 484 {
 485         gint pos;
 486
 487         gl_debug (DEBUG_MEDIA_SELECT, "START");
 488
 489         g_signal_handlers_block_by_func (G_OBJECT(media_select->page_size_entry),
 490                                         G_CALLBACK(page_size_entry_changed_cb),
 491                                         media_select);
 492         gtk_editable_delete_text (GTK_EDITABLE (media_select->page_size_entry),
 493                                   0, -1);
 494         g_signal_handlers_unblock_by_func (G_OBJECT(media_select->page_size_entry),
 495                                           G_CALLBACK(page_size_entry_changed_cb),
 496                                           media_select);
 497
 498         pos = 0;
 499         gtk_editable_insert_text (GTK_EDITABLE (media_select->page_size_entry),
 500                                   page_size, strlen (page_size), &pos);
 501
 502         gl_debug (DEBUG_MEDIA_SELECT, "END");
 503 }