1 /*****************************************************************************
2 * pda.c : PDA Gtk2 plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
7 * Authors: Jean-Paul Saman <jpsaman@wxs.nl>
8 * Marc Ariberti <marcari@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
29 #include <errno.h> /* ENOMEM */
30 #include <string.h> /* strerror() */
38 #include "pda_callbacks.h"
39 #include "pda_interface.h"
40 #include "pda_support.h"
43 /*****************************************************************************
45 *****************************************************************************/
46 static int Open ( vlc_object_t * );
47 static void Close ( vlc_object_t * );
48 static void Run ( intf_thread_t * );
50 void GtkAutoPlayFile ( vlc_object_t * );
51 static int Manage ( intf_thread_t *p_intf );
52 void E_(GtkDisplayDate) ( GtkAdjustment *p_adj, gpointer userdata );
53 gint E_(GtkModeManage) ( intf_thread_t * p_intf );
55 /*****************************************************************************
57 *****************************************************************************/
58 #define AUTOPLAYFILE_TEXT N_("Autoplay selected file")
59 #define AUTOPLAYFILE_LONGTEXT N_("Automatically play a file when selected in the "\
60 "file selection list")
62 /*****************************************************************************
64 *****************************************************************************/
66 set_description( N_("PDA Linux Gtk2+ interface") );
67 // add_bool( "pda-autoplayfile", 1, GtkAutoPlayFile, AUTOPLAYFILE_TEXT, AUTOPLAYFILE_LONGTEXT, VLC_TRUE );
68 set_capability( "interface", 70 );
69 set_callbacks( Open, Close );
70 add_shortcut( "pda" );
73 /*****************************************************************************
74 * Open: initialize and create window
75 *****************************************************************************/
76 static int Open( vlc_object_t *p_this )
78 intf_thread_t *p_intf = (intf_thread_t *)p_this;
80 /* Allocate instance and initialize some members */
81 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
82 if( p_intf->p_sys == NULL )
84 msg_Err( p_intf, "out of memory" );
89 msg_Dbg( p_intf, "Using gui-helper" );
90 p_intf->p_sys->p_gtk_main =
91 module_Need( p_this, "gui-helper", "gtk2", VLC_TRUE );
92 if( p_intf->p_sys->p_gtk_main == NULL )
94 free( p_intf->p_sys );
99 /* Initialize Gtk+ thread */
100 p_intf->p_sys->p_input = NULL;
102 p_intf->p_sys->b_autoplayfile = 1;
103 p_intf->p_sys->b_playing = 0;
104 p_intf->p_sys->b_slider_free = 1;
106 p_intf->pf_run = Run;
111 /*****************************************************************************
112 * Close: destroy interface window
113 *****************************************************************************/
114 static void Close( vlc_object_t *p_this )
116 intf_thread_t *p_intf = (intf_thread_t *)p_this;
118 if( p_intf->p_sys->p_input )
120 vlc_object_release( p_intf->p_sys->p_input );
123 #ifdef NEED_GTK2_MAIN
124 msg_Dbg( p_intf, "Releasing gui-helper" );
125 module_Unneed( p_intf, p_intf->p_sys->p_gtk_main );
128 /* Destroy structure */
129 free( p_intf->p_sys );
132 /*****************************************************************************
134 *****************************************************************************
135 * this part of the interface is in a separate thread so that we can call
136 * gtk_main() from within it without annoying the rest of the program.
137 *****************************************************************************/
138 static void Run( intf_thread_t *p_intf )
140 #ifndef NEED_GTK2_MAIN
141 /* gtk_init needs to know the command line. We don't care, so we
142 * give it an empty one */
143 char *p_args[] = { "", NULL };
144 char **pp_args = p_args;
148 playlist_t *p_playlist;
149 GtkCellRenderer *p_renderer = NULL;
150 GtkTreeViewColumn *p_column = NULL;
151 GtkListStore *p_filelist = NULL;
152 GtkListStore *p_playlist_store = NULL;
154 #ifndef NEED_GTK2_MAIN
156 msg_Dbg( p_intf, "Starting pda GTK2+ interface" );
157 gtk_init( &i_args, &pp_args );
159 /* Initialize Gtk+ */
160 msg_Dbg( p_intf, "Starting pda GTK2+ interface thread" );
164 /* Create some useful widgets that will certainly be used */
165 /* FIXME: magic path */
166 add_pixmap_directory("share");
167 add_pixmap_directory("/usr/share/vlc");
169 /* Path for pixmaps under linupy 1.4 */
170 add_pixmap_directory("/usr/local/share/pixmaps/vlc");
171 /* Path for pixmaps under linupy 2.0 */
172 add_pixmap_directory("/usr/share/pixmaps/vlc");
174 p_intf->p_sys->p_window = create_pda();
175 if (p_intf->p_sys->p_window == NULL)
177 msg_Err( p_intf, "unable to create pda interface" );
180 /* Store p_intf to keep an eye on it */
181 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
184 /* Set the title of the main window */
185 gtk_window_set_title( GTK_WINDOW(p_intf->p_sys->p_window),
186 VOUT_TITLE " (PDA Linux interface)");
188 /* Get the notebook object */
189 p_intf->p_sys->p_notebook = GTK_NOTEBOOK( gtk_object_get_data(
190 GTK_OBJECT( p_intf->p_sys->p_window ), "notebook" ) );
192 /* Get the slider object */
193 p_intf->p_sys->p_slider = (GtkHScale*) lookup_widget( p_intf->p_sys->p_window, "timeSlider" );
194 p_intf->p_sys->p_slider_label = (GtkLabel*) lookup_widget( p_intf->p_sys->p_window, "timeLabel" );
195 if (p_intf->p_sys->p_slider == NULL)
196 msg_Err( p_intf, "Time slider widget not found." );
197 if (p_intf->p_sys->p_slider_label == NULL)
198 msg_Err( p_intf, "Time label widget not found." );
200 /* Connect the date display to the slider */
201 p_intf->p_sys->p_adj = gtk_range_get_adjustment( GTK_RANGE(p_intf->p_sys->p_slider) );
202 if (p_intf->p_sys->p_adj == NULL)
203 msg_Err( p_intf, "Adjustment range not found." );
204 g_signal_connect( GTK_OBJECT( p_intf->p_sys->p_adj ), "value_changed",
205 G_CALLBACK( E_(GtkDisplayDate) ), p_intf );
206 p_intf->p_sys->f_adj_oldvalue = 0;
207 p_intf->p_sys->i_adj_oldvalue = 0;
209 /* BEGIN OF FILEVIEW GTK_TREE_VIEW */
210 p_intf->p_sys->p_tvfile = NULL;
211 p_intf->p_sys->p_tvfile = (GtkTreeView *) lookup_widget( p_intf->p_sys->p_window,
213 if (NULL == p_intf->p_sys->p_tvfile)
214 msg_Err(p_intf, "Error obtaining pointer to File List");
216 /* Insert columns 0 */
217 p_renderer = gtk_cell_renderer_text_new ();
218 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvfile, 0, (gchar *) N_("Filename"), p_renderer, NULL);
219 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvfile, 0 );
220 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 0 );
221 gtk_tree_view_column_set_sort_column_id(p_column, 0);
222 /* Insert columns 1 */
223 p_renderer = gtk_cell_renderer_text_new ();
224 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvfile, 1, (gchar *) N_("Permissions"), p_renderer, NULL);
225 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvfile, 1 );
226 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 1 );
227 gtk_tree_view_column_set_sort_column_id(p_column, 1);
228 /* Insert columns 2 */
229 p_renderer = gtk_cell_renderer_text_new ();
230 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvfile, 2, (gchar *) N_("Size"), p_renderer, NULL);
231 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvfile, 2 );
232 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 2 );
233 gtk_tree_view_column_set_sort_column_id(p_column, 2);
234 /* Insert columns 3 */
235 p_renderer = gtk_cell_renderer_text_new ();
236 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvfile, 3, (gchar *) N_("Owner"), p_renderer, NULL);
237 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvfile, 3 );
238 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 3 );
239 gtk_tree_view_column_set_sort_column_id(p_column, 3);
240 /* Insert columns 4 */
241 p_renderer = gtk_cell_renderer_text_new ();
242 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvfile, 4, (gchar *) N_("Group"), p_renderer, NULL);
243 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvfile, 4 );
244 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 4 );
245 gtk_tree_view_column_set_sort_column_id(p_column, 4);
247 /* Get new directory listing */
248 p_filelist = gtk_list_store_new (5,
249 G_TYPE_STRING, /* Filename */
250 G_TYPE_STRING, /* permissions */
251 G_TYPE_UINT64, /* File size */
252 G_TYPE_STRING, /* Owner */
253 G_TYPE_STRING);/* Group */
254 ReadDirectory(p_intf, p_filelist, ".");
255 gtk_tree_view_set_model(GTK_TREE_VIEW(p_intf->p_sys->p_tvfile), GTK_TREE_MODEL(p_filelist));
256 g_object_unref(p_filelist); /* Model will be released by GtkTreeView */
257 gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(p_intf->p_sys->p_tvfile)),GTK_SELECTION_MULTIPLE);
259 /* Column properties */
260 gtk_tree_view_set_headers_visible(p_intf->p_sys->p_tvfile, TRUE);
261 gtk_tree_view_columns_autosize(p_intf->p_sys->p_tvfile);
262 gtk_tree_view_set_headers_clickable(GTK_TREE_VIEW(p_intf->p_sys->p_tvfile),TRUE);
263 /* END OF FILEVIEW GTK_TREE_VIEW */
265 /* BEGIN OF PLAYLIST GTK_TREE_VIEW */
266 p_intf->p_sys->p_tvplaylist = NULL;
267 p_intf->p_sys->p_tvplaylist = (GtkTreeView *) lookup_widget( p_intf->p_sys->p_window, "tvPlaylist");
268 if (NULL == p_intf->p_sys->p_tvplaylist)
269 msg_Err(p_intf, "Error obtaining pointer to Play List");
272 p_renderer = gtk_cell_renderer_text_new ();
273 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvplaylist, 0, (gchar *) N_("Filename"), p_renderer, NULL);
274 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvplaylist, 0 );
275 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 0 );
276 gtk_tree_view_column_set_sort_column_id(p_column, 0);
278 p_renderer = gtk_cell_renderer_text_new ();
279 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvplaylist, 1, (gchar *) N_("Time"), p_renderer, NULL);
280 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvplaylist, 1 );
281 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 1 );
282 gtk_tree_view_column_set_sort_column_id(p_column, 1);
284 /* Column 3 - is a hidden column used for reliable deleting items from the underlying playlist */
285 p_renderer = gtk_cell_renderer_text_new ();
286 gtk_tree_view_insert_column_with_attributes(p_intf->p_sys->p_tvplaylist, 2, (gchar *) N_("Index"), p_renderer, NULL);
287 p_column = gtk_tree_view_get_column(p_intf->p_sys->p_tvplaylist, 2 );
288 gtk_tree_view_column_add_attribute(p_column, p_renderer, "text", 2 );
289 gtk_tree_view_column_set_sort_column_id(p_column, 2);
291 /* update the playlist */
292 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
293 p_playlist_store = gtk_list_store_new (3,
294 G_TYPE_STRING, /* Filename */
295 G_TYPE_STRING, /* Time */
296 G_TYPE_UINT); /* Hidden index */
297 PlaylistRebuildListStore(p_playlist_store, p_playlist);
298 gtk_tree_view_set_model(GTK_TREE_VIEW(p_intf->p_sys->p_tvplaylist), GTK_TREE_MODEL(p_playlist_store));
299 g_object_unref(p_playlist_store);
300 vlc_object_release(p_playlist); /* Free the playlist */
301 gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(p_intf->p_sys->p_tvplaylist)),GTK_SELECTION_MULTIPLE);
303 /* Column properties */
304 gtk_tree_view_set_headers_visible(p_intf->p_sys->p_tvplaylist, TRUE);
305 gtk_tree_view_columns_autosize(p_intf->p_sys->p_tvplaylist);
306 gtk_tree_view_set_headers_clickable(p_intf->p_sys->p_tvplaylist, TRUE);
307 /* END OF PLAYLIST GTK_TREE_VIEW */
309 /* Hide the Preference TAB for now. */
310 GtkWidget *p_preference_tab = NULL;
311 p_preference_tab = gtk_notebook_get_nth_page(p_intf->p_sys->p_notebook,5);
312 if (p_preference_tab != NULL)
313 gtk_widget_hide(p_preference_tab);
315 /* Show the control window */
316 gtk_widget_show( p_intf->p_sys->p_window );
318 #ifdef NEED_GTK2_MAIN
319 msg_Dbg( p_intf, "Manage GTK keyboard events using threads" );
320 while( !p_intf->b_die )
324 /* Sleep to avoid using all CPU - since some interfaces need to
325 * access keyboard events, a 100ms delay is a good compromise */
327 if (p_intf->p_libvlc->i_cpu & CPU_CAPABILITY_FPU)
328 msleep( INTF_IDLE_SLEEP );
334 msg_Dbg( p_intf, "Manage GTK keyboard events using timeouts" );
335 /* Sleep to avoid using all CPU - since some interfaces needs to access
336 * keyboard events, a 1000ms delay is a good compromise */
337 if (p_intf->p_libvlc->i_cpu & CPU_CAPABILITY_FPU)
338 i_dummy = gtk_timeout_add( INTF_IDLE_SLEEP / 1000, (GtkFunction)Manage, p_intf );
340 i_dummy = gtk_timeout_add( 1000, (GtkFunction)Manage, p_intf );
344 /* Remove the timeout */
345 gtk_timeout_remove( i_dummy );
348 gtk_object_destroy( GTK_OBJECT(p_intf->p_sys->p_window) );
349 #ifdef NEED_GTK2_MAIN
354 /*****************************************************************************
355 * GtkAutoplayFile: Autoplay file depending on configuration settings
356 *****************************************************************************/
357 void GtkAutoPlayFile( vlc_object_t *p_this )
359 GtkWidget *cbautoplay;
360 intf_thread_t *p_intf;
362 vlc_list_t *p_list = vlc_list_find( p_this, VLC_OBJECT_INTF,
365 for( i_index = 0; i_index < p_list->i_count; i_index++ )
367 p_intf = (intf_thread_t *)p_list->p_values[i_index].p_object ;
369 if( strcmp( MODULE_STRING, p_intf->p_module->psz_object_name ) )
373 cbautoplay = GTK_WIDGET( gtk_object_get_data(
374 GTK_OBJECT( p_intf->p_sys->p_window ),
377 if( !config_GetInt( p_this, "pda-autoplayfile" ) )
379 p_intf->p_sys->b_autoplayfile = VLC_FALSE;
383 p_intf->p_sys->b_autoplayfile = VLC_TRUE;
385 gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( cbautoplay ),
386 p_intf->p_sys->b_autoplayfile );
388 vlc_list_release( p_list );
391 /* following functions are local */
393 /*****************************************************************************
394 * Manage: manage main thread messages
395 *****************************************************************************
396 * In this function, called approx. 10 times a second, we check what the
397 * main program wanted to tell us.
398 *****************************************************************************/
399 static int Manage( intf_thread_t *p_intf )
401 GtkListStore *p_liststore;
402 vlc_mutex_lock( &p_intf->change_lock );
404 /* Update the input */
405 if( p_intf->p_sys->p_input == NULL )
407 p_intf->p_sys->p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
410 else if( p_intf->p_sys->p_input->b_dead )
412 vlc_object_release( p_intf->p_sys->p_input );
413 p_intf->p_sys->p_input = NULL;
416 if( p_intf->p_sys->p_input )
418 input_thread_t *p_input = p_intf->p_sys->p_input;
420 vlc_mutex_lock( &p_input->stream.stream_lock );
421 if( !p_input->b_die )
423 /* New input or stream map change */
424 if( p_input->stream.b_changed )
426 playlist_t *p_playlist;
428 E_(GtkModeManage)( p_intf );
429 p_intf->p_sys->b_playing = 1;
431 /* update playlist interface */
432 p_playlist = (playlist_t *) vlc_object_find(
433 p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
434 if (p_playlist != NULL)
436 p_liststore = gtk_list_store_new (3,
439 G_TYPE_UINT); /* Hidden index */
440 PlaylistRebuildListStore(p_liststore, p_playlist);
441 gtk_tree_view_set_model(p_intf->p_sys->p_tvplaylist, (GtkTreeModel*) p_liststore);
442 g_object_unref(p_liststore);
443 vlc_object_release( p_playlist );
447 /* Manage the slider */
448 #define p_area p_input->stream.p_selected_area
449 if (p_intf->p_libvlc->i_cpu & CPU_CAPABILITY_FPU)
451 /* Manage the slider for CPU_CAPABILITY_FPU hardware */
452 if( p_input->stream.b_seekable && p_intf->p_sys->b_playing )
454 float newvalue = p_intf->p_sys->p_adj->value;
456 /* If the user hasn't touched the slider since the last time,
457 * then the input can safely change it */
458 if( newvalue == p_intf->p_sys->f_adj_oldvalue )
460 /* Update the value */
461 p_intf->p_sys->p_adj->value =
462 p_intf->p_sys->f_adj_oldvalue =
463 ( 100. * p_area->i_tell ) / p_area->i_size;
464 g_signal_emit_by_name( GTK_OBJECT( p_intf->p_sys->p_adj ),
467 /* Otherwise, send message to the input if the user has
468 * finished dragging the slider */
469 else if( p_intf->p_sys->b_slider_free )
471 double f_pos = (double)newvalue / 100.0;
473 /* release the lock to be able to seek */
474 vlc_mutex_unlock( &p_input->stream.stream_lock );
475 var_SetFloat( p_input, "position", f_pos );
476 vlc_mutex_lock( &p_input->stream.stream_lock );
478 /* Update the old value */
479 p_intf->p_sys->f_adj_oldvalue = newvalue;
485 /* Manage the slider without CPU_CAPABILITY_FPU hardware */
486 if( p_input->stream.b_seekable && p_intf->p_sys->b_playing )
488 off_t newvalue = p_intf->p_sys->p_adj->value;
490 /* If the user hasn't touched the slider since the last time,
491 * then the input can safely change it */
492 if( newvalue == p_intf->p_sys->i_adj_oldvalue )
494 /* Update the value */
495 p_intf->p_sys->p_adj->value =
496 p_intf->p_sys->i_adj_oldvalue =
497 ( 100 * p_area->i_tell ) / p_area->i_size;
498 g_signal_emit_by_name( GTK_OBJECT( p_intf->p_sys->p_adj ),
501 /* Otherwise, send message to the input if the user has
502 * finished dragging the slider */
503 else if( p_intf->p_sys->b_slider_free )
505 double f_pos = (double)newvalue / 100.0;
507 /* release the lock to be able to seek */
508 vlc_mutex_unlock( &p_input->stream.stream_lock );
509 var_SetFloat( p_input, "position", f_pos );
510 vlc_mutex_lock( &p_input->stream.stream_lock );
512 /* Update the old value */
513 p_intf->p_sys->i_adj_oldvalue = newvalue;
519 vlc_mutex_unlock( &p_input->stream.stream_lock );
521 else if( p_intf->p_sys->b_playing && !p_intf->b_die )
523 E_(GtkModeManage)( p_intf );
524 p_intf->p_sys->b_playing = 0;
527 #ifndef NEED_GTK2_MAIN
530 vlc_mutex_unlock( &p_intf->change_lock );
532 /* Prepare to die, young Skywalker */
539 vlc_mutex_unlock( &p_intf->change_lock );
544 /*****************************************************************************
545 * GtkDisplayDate: display stream date
546 *****************************************************************************
547 * This function displays the current date related to the position in
548 * the stream. It is called whenever the slider changes its value.
549 * The lock has to be taken before you call the function.
550 *****************************************************************************/
551 void E_(GtkDisplayDate)( GtkAdjustment *p_adj, gpointer userdata )
553 intf_thread_t *p_intf;
555 p_intf = (intf_thread_t*) userdata;
559 if( p_intf->p_sys->p_input )
561 #define p_area p_intf->p_sys->p_input->stream.p_selected_area
562 char psz_time[ MSTRTIME_MAX_SIZE ];
564 gtk_label_set_text( GTK_LABEL( p_intf->p_sys->p_slider_label ),
565 input_OffsetToTime( p_intf->p_sys->p_input, psz_time,
566 ( p_area->i_size * p_adj->value ) / 100 ) );
571 /*****************************************************************************
572 * GtkModeManage: actualize the aspect of the interface whenever the input
574 *****************************************************************************
575 * The lock has to be taken before you call the function.
576 *****************************************************************************/
577 gint E_(GtkModeManage)( intf_thread_t * p_intf )
579 GtkWidget * p_slider = NULL;
580 vlc_bool_t b_control;
582 if ( p_intf->p_sys->p_window == NULL )
583 msg_Err( p_intf, "Main widget not found" );
585 p_slider = lookup_widget( p_intf->p_sys->p_window, "timeSlider");
586 if (p_slider == NULL)
587 msg_Err( p_intf, "Slider widget not found" );
589 /* controls unavailable */
592 /* show the box related to current input mode */
593 if( p_intf->p_sys->p_input )
595 /* initialize and show slider for seekable streams */
596 if( p_intf->p_sys->p_input->stream.b_seekable )
598 gtk_widget_show( GTK_WIDGET( p_slider ) );
603 gtk_widget_hide( GTK_WIDGET( p_slider ) );
606 /* control buttons for free pace streams */
607 b_control = p_intf->p_sys->p_input->stream.b_pace_control;
609 p_intf->p_sys->p_input->stream.b_changed = 0;
610 msg_Dbg( p_intf, "stream has changed, refreshing interface" );
613 /* set control items */
614 gtk_widget_set_sensitive( lookup_widget( p_intf->p_sys->p_window, "tbRewind"), b_control );
615 gtk_widget_set_sensitive( lookup_widget( p_intf->p_sys->p_window, "tbPause"), b_control );
616 gtk_widget_set_sensitive( lookup_widget( p_intf->p_sys->p_window, "tbForward"), b_control );