git.sesse.net Git - vlc/blob - plugins/gnome/intf_gnome.c

   1 /*****************************************************************************
   2  * intf_gnome.c: Gnome interface
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000 VideoLAN
   5  * $Id: intf_gnome.c,v 1.20 2001/03/07 11:56:33 stef Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #define MODULE_NAME gnome
  25 #include "modules_inner.h"
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include "defs.h"
  31
  32 #include <errno.h>                                                 /* ENOMEM */
  33 #include <stdlib.h>                                                /* free() */
  34 #include <string.h>                                            /* strerror() */
  35 #include <stdio.h>
  36
  37 #include <gnome.h>
  38
  39 #include "config.h"
  40 #include "common.h"
  41 #include "threads.h"
  42 #include "mtime.h"
  43 #include "tests.h"
  44 #include "modules.h"
  45
  46 #include "stream_control.h"
  47 #include "input_ext-intf.h"
  48
  49 #include "intf_msg.h"
  50 #include "interface.h"
  51
  52 #include "gnome_sys.h"
  53 #include "gnome_callbacks.h"
  54 #include "gnome_interface.h"
  55 #include "gnome_support.h"
  56
  57 #include "main.h"
  58
  59 /*****************************************************************************
  60  * Local prototypes.
  61  *****************************************************************************/
  62 static int  intf_Probe     ( probedata_t *p_data );
  63 static int  intf_Open      ( intf_thread_t *p_intf );
  64 static void intf_Close     ( intf_thread_t *p_intf );
  65 static void intf_Run       ( intf_thread_t *p_intf );
  66
  67 static gint GnomeManage    ( gpointer p_data );
  68 static gint GnomeLanguageMenus( gpointer, GtkWidget *, es_descriptor_t *, gint,
  69                               void (*pf_activate)(GtkMenuItem *, gpointer) );
  70 static gint GnomeChapterMenu  ( gpointer, GtkWidget *,
  71                               void (*pf_activate)(GtkMenuItem *, gpointer) );
  72 static gint GnomeTitleMenu    ( gpointer, GtkWidget *,
  73                               void (*pf_activate)(GtkMenuItem *, gpointer) );
  74
  75 /*****************************************************************************
  76  * g_atexit: kludge to avoid the Gnome thread to segfault at exit
  77  *****************************************************************************
  78  * gtk_init() makes several calls to g_atexit() which calls atexit() to
  79  * register tidying callbacks to be called at program exit. Since the Gnome
  80  * plugin is likely to be unloaded at program exit, we have to export this
  81  * symbol to intercept the g_atexit() calls. Talk about crude hack.
  82  *****************************************************************************/
  83 void g_atexit( GVoidFunc func )
  84 {
  85     intf_thread_t *p_intf = p_main->p_intf;
  86
  87     if( p_intf->p_sys->pf_gdk_callback == NULL )
  88     {
  89         p_intf->p_sys->pf_gdk_callback = func;
  90     }
  91     else if( p_intf->p_sys->pf_gtk_callback == NULL )
  92     {
  93         p_intf->p_sys->pf_gtk_callback = func;
  94     }
  95     /* else nothing, but we could do something here */
  96     return;
  97 }
  98
  99 /*****************************************************************************
 100  * Functions exported as capabilities. They are declared as static so that
 101  * we don't pollute the namespace too much.
 102  *****************************************************************************/
 103 void _M( intf_getfunctions )( function_list_t * p_function_list )
 104 {
 105     p_function_list->pf_probe = intf_Probe;
 106     p_function_list->functions.intf.pf_open  = intf_Open;
 107     p_function_list->functions.intf.pf_close = intf_Close;
 108     p_function_list->functions.intf.pf_run   = intf_Run;
 109 }
 110
 111 /*****************************************************************************
 112  * intf_Probe: probe the interface and return a score
 113  *****************************************************************************
 114  * This function tries to initialize Gnome and returns a score to the
 115  * plugin manager so that it can select the best plugin.
 116  *****************************************************************************/
 117 static int intf_Probe( probedata_t *p_data )
 118 {
 119     if( TestMethod( INTF_METHOD_VAR, "gnome" ) )
 120     {
 121         return( 999 );
 122     }
 123
 124     return( 100 );
 125 }
 126
 127 /*****************************************************************************
 128  * intf_Open: initialize and create window
 129  *****************************************************************************/
 130 static int intf_Open( intf_thread_t *p_intf )
 131 {
 132     /* Allocate instance and initialize some members */
 133     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
 134     if( p_intf->p_sys == NULL )
 135     {
 136         intf_ErrMsg("error: %s", strerror(ENOMEM));
 137         return( 1 );
 138     }
 139
 140     /* Initialize Gnome thread */
 141     p_intf->p_sys->b_popup_changed = 0;
 142     p_intf->p_sys->b_window_changed = 0;
 143     p_intf->p_sys->b_playlist_changed = 0;
 144
 145     p_intf->p_sys->b_scale_isfree = 1;
 146
 147     p_intf->p_sys->pf_gtk_callback = NULL;
 148     p_intf->p_sys->pf_gdk_callback = NULL;
 149
 150     /* Initialize lock */
 151     vlc_mutex_init( &p_intf->p_sys->change_lock );
 152
 153     return( 0 );
 154 }
 155
 156 /*****************************************************************************
 157  * intf_Close: destroy interface window
 158  *****************************************************************************/
 159 static void intf_Close( intf_thread_t *p_intf )
 160 {
 161     /* Destroy lock */
 162     vlc_mutex_destroy( &p_intf->p_sys->change_lock );
 163
 164     /* Destroy structure */
 165     free( p_intf->p_sys );
 166 }
 167
 168 /*****************************************************************************
 169  * intf_Run: Gnome thread
 170  *****************************************************************************
 171  * this part of the interface is in a separate thread so that we can call
 172  * gtk_main() from within it without annoying the rest of the program.
 173  * XXX: the approach may look kludgy, and probably is, but I could not find
 174  * a better way to dynamically load a Gnome interface at runtime.
 175  *****************************************************************************/
 176 static void intf_Run( intf_thread_t *p_intf )
 177 {
 178     /* gnome_init needs to know the command line. We don't care, so we
 179      * give it an empty one */
 180     char *p_args[] = { "" };
 181
 182     /* The data types we are allowed to receive */
 183     static GtkTargetEntry target_table[] =
 184     {
 185         { "text/uri-list", 0, DROP_ACCEPT_TEXT_URI_LIST },
 186         { "text/plain", 0, DROP_ACCEPT_TEXT_PLAIN }
 187     };
 188
 189     /* Initialize Gnome */
 190     gnome_init( p_main->psz_arg0, VERSION, 1, p_args );
 191
 192     /* Create some useful widgets that will certainly be used */
 193     p_intf->p_sys->p_window = create_intf_window( );
 194     p_intf->p_sys->p_popup = create_intf_popup( );
 195
 196     /* Set the title of the main window */
 197     gtk_window_set_title( GTK_WINDOW(p_intf->p_sys->p_window),
 198                           VOUT_TITLE " (Gnome interface)");
 199
 200     /* Accept file drops on the main window */
 201     gtk_drag_dest_set( GTK_WIDGET( p_intf->p_sys->p_window ),
 202                        GTK_DEST_DEFAULT_ALL, target_table,
 203                        1, GDK_ACTION_COPY );
 204
 205     /* We don't create these ones yet because we perhaps won't need them */
 206     p_intf->p_sys->p_about = NULL;
 207     p_intf->p_sys->p_playlist = NULL;
 208     p_intf->p_sys->p_modules = NULL;
 209     p_intf->p_sys->p_fileopen = NULL;
 210     p_intf->p_sys->p_disc = NULL;
 211
 212     /* Store p_intf to keep an eye on it */
 213     gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
 214                          "p_intf", p_intf );
 215
 216     gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_popup),
 217                          "p_intf", p_intf );
 218
 219     /* Show the control window */
 220     gtk_widget_show( p_intf->p_sys->p_window );
 221
 222     /* Sleep to avoid using all CPU - since some interfaces needs to access
 223      * keyboard events, a 100ms delay is a good compromise */
 224     p_intf->p_sys->i_timeout = gtk_timeout_add( INTF_IDLE_SLEEP / 1000,
 225                                                 GnomeManage, p_intf );
 226
 227
 228     /* Enter gnome mode */
 229     gtk_main();
 230
 231     /* launch stored callbacks */
 232     if( p_intf->p_sys->pf_gtk_callback != NULL )
 233     {
 234         p_intf->p_sys->pf_gtk_callback();
 235
 236         if( p_intf->p_sys->pf_gdk_callback != NULL )
 237         {
 238             p_intf->p_sys->pf_gdk_callback();
 239         }
 240     }
 241 }
 242
 243 /* following functions are local */
 244
 245 /*****************************************************************************
 246  * GnomeManage: manage main thread messages
 247  *****************************************************************************
 248  * In this function, called approx. 10 times a second, we check what the
 249  * main program wanted to tell us.
 250  *****************************************************************************/
 251 static gint GnomeManage( gpointer p_data )
 252 {
 253     intf_thread_t *p_intf = (void *)p_data;
 254
 255     vlc_mutex_lock( &p_intf->p_sys->change_lock );
 256
 257     /* If the "display popup" flag has changed */
 258     if( p_intf->b_menu_change )
 259     {
 260         gnome_popup_menu_do_popup( p_intf->p_sys->p_popup,
 261                                    NULL, NULL, NULL, NULL );
 262         p_intf->b_menu_change = 0;
 263     }
 264
 265     /* Update language/chapter menus after user request */
 266     if( p_intf->p_input != NULL && p_intf->p_sys->p_window != NULL &&
 267         p_intf->p_sys->b_menus_update )
 268     {
 269         es_descriptor_t *   p_audio_es;
 270         es_descriptor_t *   p_spu_es;
 271         GtkWidget *         p_menubar_menu;
 272         GtkWidget *         p_popup_menu;
 273         gint                i;
 274
 275         p_menubar_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 276                      p_intf->p_sys->p_window ), "menubar_title" ) );
 277
 278         GnomeTitleMenu( p_intf, p_menubar_menu, on_menubar_title_activate );
 279
 280         p_menubar_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 281                      p_intf->p_sys->p_window ), "menubar_chapter" ) );
 282
 283         GnomeChapterMenu( p_intf, p_menubar_menu, on_menubar_chapter_activate );
 284
 285         p_popup_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 286                      p_intf->p_sys->p_popup ), "popup_navigation" ) );
 287
 288         GnomeTitleMenu( p_intf, p_popup_menu, on_popup_navigation_activate );
 289
 290         /* look for selected ES */
 291         p_audio_es = NULL;
 292         p_spu_es = NULL;
 293
 294         for( i = 0 ; i < p_intf->p_input->stream.i_selected_es_number ; i++ )
 295         {
 296             if( p_intf->p_input->stream.pp_es[i]->b_audio )
 297             {
 298                 p_audio_es = p_intf->p_input->stream.pp_es[i];
 299             }
 300
 301             if( p_intf->p_input->stream.pp_es[i]->b_spu )
 302             {
 303                 p_spu_es = p_intf->p_input->stream.pp_es[i];
 304             }
 305         }
 306
 307         /* audio menus */
 308
 309         /* find audio root menu */
 310         p_menubar_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 311                              p_intf->p_sys->p_window ), "menubar_audio" ) );
 312
 313         p_popup_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 314                      p_intf->p_sys->p_popup ), "popup_audio" ) );
 315
 316         GnomeLanguageMenus( p_intf, p_menubar_menu, p_audio_es, 1,
 317                           on_menubar_audio_activate );
 318         GnomeLanguageMenus( p_intf, p_popup_menu, p_audio_es, 1,
 319                           on_popup_audio_activate );
 320
 321         /* sub picture menus */
 322
 323         /* find spu root menu */
 324         p_menubar_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 325                           p_intf->p_sys->p_window ), "menubar_subtitle" ) );
 326
 327         p_popup_menu = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 328                      p_intf->p_sys->p_popup ), "popup_subtitle" ) );
 329
 330         GnomeLanguageMenus( p_intf, p_menubar_menu, p_spu_es, 2,
 331                           on_menubar_subtitle_activate  );
 332         GnomeLanguageMenus( p_intf, p_popup_menu, p_spu_es, 2,
 333                           on_popup_subtitle_activate );
 334
 335         /* everything is ready */
 336         p_intf->p_sys->b_menus_update = 0;
 337     }
 338
 339     /* Manage the slider */
 340     if( p_intf->p_input != NULL && p_intf->p_sys->p_window != NULL
 341          && p_intf->p_sys->b_scale_isfree )
 342     {
 343         GtkWidget *p_scale;
 344         GtkAdjustment *p_adj;
 345
 346         p_scale = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 347                                   p_intf->p_sys->p_window ), "hscale" ) );
 348         p_adj = gtk_range_get_adjustment ( GTK_RANGE( p_scale ) );
 349
 350         /* Update the value */
 351         p_adj->value = ( 100. *
 352                          p_intf->p_input->stream.p_selected_area->i_tell ) /
 353                          p_intf->p_input->stream.p_selected_area->i_size;
 354
 355         /* Gtv does it this way. Why not. */
 356         gtk_range_set_adjustment ( GTK_RANGE( p_scale ), p_adj );
 357         gtk_range_slider_update ( GTK_RANGE( p_scale ) );
 358         gtk_range_clear_background ( GTK_RANGE( p_scale ) );
 359         gtk_range_draw_background ( GTK_RANGE( p_scale ) );
 360     }
 361
 362     /* Manage core vlc functions through the callback */
 363     p_intf->pf_manage( p_intf );
 364
 365     if( p_intf->b_die )
 366     {
 367         /* Make sure we won't be called again */
 368         gtk_timeout_remove( p_intf->p_sys->i_timeout );
 369
 370         vlc_mutex_unlock( &p_intf->p_sys->change_lock );
 371
 372         /* Prepare to die, young Skywalker */
 373         gtk_main_quit();
 374         return( FALSE );
 375     }
 376
 377     vlc_mutex_unlock( &p_intf->p_sys->change_lock );
 378
 379     return( TRUE );
 380 }
 381
 382 /*****************************************************************************
 383  * GnomeMenuRadioItem: give a menu item adapted to language/title selection,
 384  * ie the menu item is a radio button.
 385  *****************************************************************************/
 386 static GtkWidget * GnomeMenuRadioItem( GtkWidget * p_menu,
 387                                        GSList **   p_button_group,
 388                                        gint        b_active,
 389                                        char *      psz_name )
 390 {
 391     GtkWidget *     p_item;
 392
 393 #if 0
 394     GtkWidget *     p_button;
 395
 396     /* create button */
 397     p_button =
 398         gtk_radio_button_new_with_label( *p_button_group, psz_name );
 399
 400     /* add button to group */
 401     *p_button_group =
 402         gtk_radio_button_group( GTK_RADIO_BUTTON( p_button ) );
 403
 404     /* prepare button for display */
 405     gtk_widget_show( p_button );
 406
 407     /* create menu item to store button */
 408     p_item = gtk_menu_item_new();
 409
 410     /* put button inside item */
 411     gtk_container_add( GTK_CONTAINER( p_item ), p_button );
 412
 413     /* add item to menu */
 414     gtk_menu_append( GTK_MENU( p_menu ), p_item );
 415
 416           gtk_signal_connect( GTK_OBJECT( p_item ), "activate",
 417                GTK_SIGNAL_FUNC( on_audio_toggle ),
 418                NULL );
 419
 420
 421     /* prepare item for display */
 422     gtk_widget_show( p_item );
 423
 424     /* is it the selected item ? */
 425     if( b_active )
 426     {
 427         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( p_button ), TRUE );
 428     }
 429 #else
 430     p_item = gtk_menu_item_new_with_label( psz_name );
 431     gtk_menu_append( GTK_MENU( p_menu ), p_item );
 432     gtk_widget_show( p_item );
 433
 434 #endif
 435     return p_item;
 436 }
 437
 438 /*****************************************************************************
 439  * GnomeLanguageMenus: update interactive menus of the interface
 440  *****************************************************************************
 441  * Sets up menus with information from input:
 442  *  -languages
 443  *  -sub-pictures
 444  * Warning: since this function is designed to be called by management
 445  * function, the interface lock has to be taken
 446  *****************************************************************************/
 447 static gint GnomeLanguageMenus( gpointer          p_data,
 448                                 GtkWidget *       p_root,
 449                                 es_descriptor_t * p_es,
 450                                 gint              i_type,
 451                           void(*pf_activate )( GtkMenuItem *, gpointer ) )
 452 {
 453     intf_thread_t *     p_intf;
 454     GtkWidget *         p_menu;
 455     GtkWidget *         p_separator;
 456     GtkWidget *         p_item;
 457     GSList *            p_button_group;
 458     char *              psz_name;
 459     gint                b_active;
 460     gint                b_audio;
 461     gint                b_spu;
 462     gint                i;
 463
 464
 465
 466     /* cast */
 467     p_intf = (intf_thread_t *)p_data;
 468
 469     vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
 470
 471     b_audio = ( i_type == 1 );
 472     p_button_group = NULL;
 473
 474     /* menu container for audio */
 475     p_menu = gtk_menu_new();
 476
 477     /* create a set of language buttons and append them to the container */
 478     b_active = ( p_es == NULL ) ? 1 : 0;
 479     psz_name = "Off";
 480
 481     p_item = GnomeMenuRadioItem( p_menu, &p_button_group, b_active, psz_name );
 482
 483     /* setup signal hanling */
 484     gtk_signal_connect( GTK_OBJECT( p_item ), "activate",
 485             GTK_SIGNAL_FUNC ( pf_activate ), NULL );
 486
 487     p_separator = gtk_menu_item_new();
 488     gtk_widget_show( p_separator );
 489     gtk_menu_append( GTK_MENU( p_menu ), p_separator );
 490     gtk_widget_set_sensitive( p_separator, FALSE );
 491
 492     for( i = 0 ; i < p_intf->p_input->stream.i_es_number ; i++ )
 493     {
 494
 495         b_audio = ( i_type == 1 ) && p_intf->p_input->stream.pp_es[i]->b_audio;
 496         b_spu   = ( i_type == 2 ) && p_intf->p_input->stream.pp_es[i]->b_spu;
 497
 498         if( b_audio || b_spu )
 499         {
 500             b_active = ( p_es == p_intf->p_input->stream.pp_es[i] ) ? 1 : 0;
 501             psz_name = p_intf->p_input->stream.pp_es[i]->psz_desc;
 502
 503             p_item = GnomeMenuRadioItem( p_menu, &p_button_group,
 504                                          b_active, psz_name );
 505
 506             /* setup signal hanling */
 507             gtk_signal_connect( GTK_OBJECT( p_item ), "activate",
 508                GTK_SIGNAL_FUNC( pf_activate ),
 509                  (gpointer)( p_intf->p_input->stream.pp_es[i] ) );
 510
 511         }
 512     }
 513
 514     /* link the new menu to the menubar item */
 515     gtk_menu_item_set_submenu( GTK_MENU_ITEM( p_root ), p_menu );
 516
 517     /* be sure that menu is sensitive */
 518     gtk_widget_set_sensitive( p_root, TRUE );
 519
 520     vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
 521
 522     return TRUE;
 523 }
 524
 525 /*****************************************************************************
 526  * GnomeChapterMenu: generate chapter menu foir current title
 527  *****************************************************************************/
 528 static gint GnomeChapterMenu( gpointer p_data, GtkWidget * p_chapter,
 529                         void(*pf_activate )( GtkMenuItem *, gpointer ) )
 530 {
 531     intf_thread_t *     p_intf;
 532     char                psz_name[10];
 533     GtkWidget *         p_chapter_menu;
 534     GtkWidget *         p_item;
 535     GSList *            p_chapter_button_group;
 536     gint                i_title;
 537     gint                i_chapter;
 538     gint                b_active;
 539
 540     /* cast */
 541     p_intf = (intf_thread_t*)p_data;
 542
 543     i_title = p_intf->p_input->stream.p_selected_area->i_id;
 544     p_chapter_menu = gtk_menu_new();
 545
 546     for( i_chapter = 0;
 547          i_chapter < p_intf->p_input->stream.pp_areas[i_title]->i_part_nb ;
 548          i_chapter++ )
 549     {
 550         b_active = ( p_intf->p_input->stream.pp_areas[i_title]->i_part
 551                      == i_chapter + 1 ) ? 1 : 0;
 552
 553         sprintf( psz_name, "Chapter %d", i_chapter + 1 );
 554
 555         p_item = GnomeMenuRadioItem( p_chapter_menu, &p_chapter_button_group,
 556                                      b_active, psz_name );
 557         /* setup signal hanling */
 558         gtk_signal_connect( GTK_OBJECT( p_item ),
 559                         "activate",
 560                         GTK_SIGNAL_FUNC( pf_activate ),
 561                         (gpointer)(i_chapter + 1) );
 562     }
 563
 564     /* link the new menu to the title menu item */
 565     gtk_menu_item_set_submenu( GTK_MENU_ITEM( p_chapter ),
 566                                p_chapter_menu );
 567
 568     /* be sure that chapter menu is sensitive */
 569     gtk_widget_set_sensitive( p_chapter, TRUE );
 570
 571     return TRUE;
 572 }
 573
 574 /*****************************************************************************
 575  * GnomeTitleMenu: sets menus for titles and chapters selection
 576  *****************************************************************************
 577  * Generates two type of menus:
 578  *  -simple list of titles
 579  *  -cascaded lists of chapters for each title
 580  *****************************************************************************/
 581 static gint GnomeTitleMenu( gpointer       p_data,
 582                             GtkWidget *    p_navigation,
 583                             void(*pf_activate )( GtkMenuItem *, gpointer ) )
 584 {
 585     intf_thread_t *     p_intf;
 586     char                psz_name[10];
 587     GtkWidget *         p_title_menu;
 588     GtkWidget *         p_title_item;
 589     GtkWidget *         p_chapter_menu;
 590     GtkWidget *         p_item;
 591     GSList *            p_title_button_group;
 592     GSList *            p_chapter_button_group;
 593     gint                i_title;
 594     gint                i_chapter;
 595     gint                b_active;
 596
 597     /* cast */
 598     p_intf = (intf_thread_t*)p_data;
 599
 600     p_title_menu = gtk_menu_new();
 601     p_title_button_group = NULL;
 602     p_chapter_button_group = NULL;
 603
 604     /* loop on titles */
 605     for( i_title = 1 ;
 606          i_title < p_intf->p_input->stream.i_area_nb ;
 607          i_title++ )
 608     {
 609         b_active = ( p_intf->p_input->stream.pp_areas[i_title] ==
 610                      p_intf->p_input->stream.p_selected_area ) ? 1 : 0;
 611         sprintf( psz_name, "Title %d", i_title );
 612
 613         p_title_item = GnomeMenuRadioItem( p_title_menu, &p_title_button_group,
 614                                            b_active, psz_name );
 615
 616         if( pf_activate == on_menubar_title_activate )
 617         {
 618             /* setup signal hanling */
 619             gtk_signal_connect( GTK_OBJECT( p_title_item ),
 620                      "activate",
 621                      GTK_SIGNAL_FUNC( pf_activate ),
 622                      (gpointer)(p_intf->p_input->stream.pp_areas[i_title]) );
 623         }
 624         else
 625         {
 626             p_chapter_menu = gtk_menu_new();
 627
 628             for( i_chapter = 0;
 629                  i_chapter <
 630                         p_intf->p_input->stream.pp_areas[i_title]->i_part_nb ;
 631                  i_chapter++ )
 632             {
 633                 b_active = ( p_intf->p_input->stream.pp_areas[i_title]->i_part
 634                              == i_chapter + 1 ) ? 1 : 0;
 635
 636                 sprintf( psz_name, "Chapter %d", i_chapter + 1 );
 637
 638                 p_item = GnomeMenuRadioItem( p_chapter_menu,
 639                                              &p_chapter_button_group,
 640                                              b_active, psz_name );
 641
 642                 /* setup signal hanling */
 643                 gtk_signal_connect( GTK_OBJECT( p_item ),
 644                            "activate",
 645                            GTK_SIGNAL_FUNC( pf_activate ),
 646                            (gpointer)( ( i_title * 100 ) + ( i_chapter + 1) ) );
 647         }
 648
 649         /* link the new menu to the title menu item */
 650         gtk_menu_item_set_submenu( GTK_MENU_ITEM( p_title_item ),
 651                                    p_chapter_menu );
 652         }
 653
 654         /* be sure that chapter menu is sensitive */
 655         gtk_widget_set_sensitive( p_title_menu, TRUE );
 656
 657     }
 658
 659     /* link the new menu to the menubar audio item */
 660     gtk_menu_item_set_submenu( GTK_MENU_ITEM( p_navigation ), p_title_menu );
 661
 662     /* be sure that audio menu is sensitive */
 663     gtk_widget_set_sensitive( p_navigation, TRUE );
 664
 665
 666     return TRUE;
 667 }