1 /*****************************************************************************
2 * intf_gnome.c: Gnome interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: intf_gnome.c,v 1.2 2001/05/30 17:03:12 sam Exp $
7 * Authors: Samuel Hocevar <sam@zoy.org>
8 * Stéphane Borel <stef@via.ecp.fr>
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 #define MODULE_NAME gnome
26 #include "modules_inner.h"
28 /*****************************************************************************
30 *****************************************************************************/
33 #include <errno.h> /* ENOMEM */
34 #include <stdlib.h> /* free() */
35 #include <string.h> /* strerror() */
46 #include "stream_control.h"
47 #include "input_ext-intf.h"
50 #include "interface.h"
51 #include "intf_playlist.h"
54 #include "video_output.h"
56 #include "gnome_callbacks.h"
57 #include "gnome_interface.h"
58 #include "gnome_support.h"
59 #include "gtk_display.h"
65 #include "modules_export.h"
67 /*****************************************************************************
69 *****************************************************************************/
70 static int intf_Probe ( probedata_t *p_data );
71 static int intf_Open ( intf_thread_t *p_intf );
72 static void intf_Close ( intf_thread_t *p_intf );
73 static void intf_Run ( intf_thread_t *p_intf );
75 static gint GnomeManage ( gpointer p_data );
77 /*****************************************************************************
78 * g_atexit: kludge to avoid the Gnome thread to segfault at exit
79 *****************************************************************************
80 * gtk_init() makes several calls to g_atexit() which calls atexit() to
81 * register tidying callbacks to be called at program exit. Since the Gnome
82 * plugin is likely to be unloaded at program exit, we have to export this
83 * symbol to intercept the g_atexit() calls. Talk about crude hack.
84 *****************************************************************************/
85 void g_atexit( GVoidFunc func )
87 intf_thread_t *p_intf = p_main->p_intf;
89 if( p_intf->p_sys->pf_gdk_callback == NULL )
91 p_intf->p_sys->pf_gdk_callback = func;
93 else if( p_intf->p_sys->pf_gtk_callback == NULL )
95 p_intf->p_sys->pf_gtk_callback = func;
97 /* else nothing, but we could do something here */
101 /*****************************************************************************
102 * Functions exported as capabilities. They are declared as static so that
103 * we don't pollute the namespace too much.
104 *****************************************************************************/
105 void _M( intf_getfunctions )( function_list_t * p_function_list )
107 p_function_list->pf_probe = intf_Probe;
108 p_function_list->functions.intf.pf_open = intf_Open;
109 p_function_list->functions.intf.pf_close = intf_Close;
110 p_function_list->functions.intf.pf_run = intf_Run;
113 /*****************************************************************************
114 * intf_Probe: probe the interface and return a score
115 *****************************************************************************
116 * This function tries to initialize Gnome and returns a score to the
117 * plugin manager so that it can select the best plugin.
118 *****************************************************************************/
119 static int intf_Probe( probedata_t *p_data )
121 if( TestMethod( INTF_METHOD_VAR, "gnome" ) )
126 if( TestProgram( "gnome-vlc" ) )
134 /*****************************************************************************
135 * intf_Open: initialize and create window
136 *****************************************************************************/
137 static int intf_Open( intf_thread_t *p_intf )
139 /* Allocate instance and initialize some members */
140 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
141 if( p_intf->p_sys == NULL )
143 intf_ErrMsg("error: %s", strerror(ENOMEM));
147 /* Initialize Gnome thread */
148 p_intf->p_sys->b_popup_changed = 0;
149 p_intf->p_sys->b_window_changed = 0;
150 p_intf->p_sys->b_playlist_changed = 0;
152 p_intf->p_sys->i_playing = -1;
153 p_intf->p_sys->b_slider_free = 1;
155 p_intf->p_sys->pf_gtk_callback = NULL;
156 p_intf->p_sys->pf_gdk_callback = NULL;
161 /*****************************************************************************
162 * intf_Close: destroy interface window
163 *****************************************************************************/
164 static void intf_Close( intf_thread_t *p_intf )
166 /* Destroy structure */
167 free( p_intf->p_sys );
170 /*****************************************************************************
171 * intf_Run: Gnome thread
172 *****************************************************************************
173 * this part of the interface is in a separate thread so that we can call
174 * gtk_main() from within it without annoying the rest of the program.
175 * XXX: the approach may look kludgy, and probably is, but I could not find
176 * a better way to dynamically load a Gnome interface at runtime.
177 *****************************************************************************/
178 static void intf_Run( intf_thread_t *p_intf )
180 /* gnome_init needs to know the command line. We don't care, so we
181 * give it an empty one */
182 char *p_args[] = { "" };
185 /* The data types we are allowed to receive */
186 static GtkTargetEntry target_table[] =
188 { "text/uri-list", 0, DROP_ACCEPT_TEXT_URI_LIST },
189 { "text/plain", 0, DROP_ACCEPT_TEXT_PLAIN }
192 /* intf_Manage callback timeout */
195 /* Initialize Gnome */
196 gnome_init( p_main->psz_arg0, VERSION, i_args, p_args );
198 /* Create some useful widgets that will certainly be used */
199 p_intf->p_sys->p_window = create_intf_window( );
200 p_intf->p_sys->p_popup = create_intf_popup( );
201 p_intf->p_sys->p_playlist = create_intf_playlist();
203 /* Set the title of the main window */
204 gtk_window_set_title( GTK_WINDOW(p_intf->p_sys->p_window),
205 VOUT_TITLE " (Gnome interface)");
207 /* Accept file drops on the main window */
208 gtk_drag_dest_set( GTK_WIDGET( p_intf->p_sys->p_window ),
209 GTK_DEST_DEFAULT_ALL, target_table,
210 1, GDK_ACTION_COPY );
211 /* Accept file drops on the playlist window */
212 gtk_drag_dest_set( GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
213 p_intf->p_sys->p_playlist ), "playlist_clist") ),
214 GTK_DEST_DEFAULT_ALL, target_table,
215 1, GDK_ACTION_COPY );
217 /* Get the interface labels */
218 p_intf->p_sys->p_slider_frame = gtk_object_get_data(
219 GTK_OBJECT( p_intf->p_sys->p_window ), "slider_frame" );
220 #define P_LABEL( name ) GTK_LABEL( gtk_object_get_data( \
221 GTK_OBJECT( p_intf->p_sys->p_window ), name ) )
222 p_intf->p_sys->p_label_title = P_LABEL( "title_label" );
223 p_intf->p_sys->p_label_chapter = P_LABEL( "chapter_label" );
226 /* Connect the date display to the slider */
227 #define P_SLIDER GTK_RANGE( gtk_object_get_data( \
228 GTK_OBJECT( p_intf->p_sys->p_window ), "slider" ) )
229 p_intf->p_sys->p_adj = gtk_range_get_adjustment( P_SLIDER );
231 gtk_signal_connect ( GTK_OBJECT( p_intf->p_sys->p_adj ), "value_changed",
232 GTK_SIGNAL_FUNC( GtkDisplayDate ), NULL );
233 p_intf->p_sys->f_adj_oldvalue = 0;
236 /* We don't create these ones yet because we perhaps won't need them */
237 p_intf->p_sys->p_about = NULL;
238 p_intf->p_sys->p_modules = NULL;
239 p_intf->p_sys->p_fileopen = NULL;
240 p_intf->p_sys->p_disc = NULL;
241 p_intf->p_sys->p_network = NULL;
242 p_intf->p_sys->p_preferences = NULL;
243 p_intf->p_sys->p_jump = NULL;
245 /* Store p_intf to keep an eye on it */
246 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
249 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_popup),
252 gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_playlist ),
255 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_adj),
258 /* Show the control window */
259 gtk_widget_show( p_intf->p_sys->p_window );
261 /* Sleep to avoid using all CPU - since some interfaces needs to access
262 * keyboard events, a 100ms delay is a good compromise */
263 i_timeout = gtk_timeout_add( INTF_IDLE_SLEEP / 1000, GnomeManage, p_intf );
265 /* Enter gnome mode */
268 /* Remove the timeout */
269 gtk_timeout_remove( i_timeout );
271 /* Get rid of stored callbacks so we can unload the plugin */
272 if( p_intf->p_sys->pf_gtk_callback != NULL )
274 p_intf->p_sys->pf_gtk_callback( );
275 p_intf->p_sys->pf_gtk_callback = NULL;
279 if( p_intf->p_sys->pf_gdk_callback != NULL )
281 p_intf->p_sys->pf_gdk_callback( );
282 p_intf->p_sys->pf_gdk_callback = NULL;
286 /* following functions are local */
288 /*****************************************************************************
289 * GnomeManage: manage main thread messages
290 *****************************************************************************
291 * In this function, called approx. 10 times a second, we check what the
292 * main program wanted to tell us.
293 *****************************************************************************/
294 static gint GnomeManage( gpointer p_data )
296 #define p_intf ((intf_thread_t *)p_data)
298 vlc_mutex_lock( &p_intf->change_lock );
300 /* If the "display popup" flag has changed */
301 if( p_intf->b_menu_change )
303 if( !GTK_IS_WIDGET( p_intf->p_sys->p_popup ) )
305 p_intf->p_sys->p_popup = create_intf_popup();
306 gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_popup ),
310 gnome_popup_menu_do_popup( p_intf->p_sys->p_popup,
311 NULL, NULL, NULL, NULL );
312 p_intf->b_menu_change = 0;
315 /* update the playlist */
316 GtkPlayListManage( p_intf );
318 if( p_intf->p_input != NULL && !p_intf->b_die )
320 vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
322 /* New input or stream map change */
323 if( p_intf->p_input->stream.b_changed )
325 GtkModeManage( p_intf );
328 /* Manage the slider */
329 if( p_intf->p_input->stream.b_seekable )
332 newvalue = p_intf->p_sys->p_adj->value;
334 #define p_area p_intf->p_input->stream.p_selected_area
335 /* If the user hasn't touched the slider since the last time,
336 * then the input can safely change it */
337 if( newvalue == p_intf->p_sys->f_adj_oldvalue )
339 /* Update the value */
340 p_intf->p_sys->p_adj->value = p_intf->p_sys->f_adj_oldvalue =
341 ( 100. * p_area->i_tell ) / p_area->i_size;
343 gtk_signal_emit_by_name( GTK_OBJECT( p_intf->p_sys->p_adj ),
346 /* Otherwise, send message to the input if the user has
347 * finished dragging the slider */
348 else if( p_intf->p_sys->b_slider_free )
350 off_t i_seek = ( newvalue * p_area->i_size ) / 100;
352 vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
353 input_Seek( p_intf->p_input, i_seek );
354 vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
356 /* Update the old value */
357 p_intf->p_sys->f_adj_oldvalue = newvalue;
361 vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
363 if( p_intf->p_sys->i_part !=
364 p_intf->p_input->stream.p_selected_area->i_part )
366 p_intf->p_sys->b_chapter_update = 1;
367 GtkSetupMenus( p_intf );
371 else if( !p_intf->b_die )
373 GtkModeManage( p_intf );
376 /* Manage core vlc functions through the callback */
377 p_intf->pf_manage( p_intf );
381 vlc_mutex_unlock( &p_intf->change_lock );
383 /* Prepare to die, young Skywalker */
390 vlc_mutex_unlock( &p_intf->change_lock );