1 /*****************************************************************************
2 * intf_gnome.c: Gnome interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: intf_gnome.c,v 1.1 2001/05/23 23:08:20 stef 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() */
47 #include "stream_control.h"
48 #include "input_ext-intf.h"
51 #include "interface.h"
52 #include "intf_playlist.h"
55 #include "video_output.h"
57 #include "gnome_callbacks.h"
58 #include "gnome_interface.h"
59 #include "gnome_support.h"
60 #include "gtk_display.h"
65 /*****************************************************************************
67 *****************************************************************************/
68 static int intf_Probe ( probedata_t *p_data );
69 static int intf_Open ( intf_thread_t *p_intf );
70 static void intf_Close ( intf_thread_t *p_intf );
71 static void intf_Run ( intf_thread_t *p_intf );
73 static gint GnomeManage ( gpointer p_data );
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 )
85 intf_thread_t *p_intf = p_main->p_intf;
87 if( p_intf->p_sys->pf_gdk_callback == NULL )
89 p_intf->p_sys->pf_gdk_callback = func;
91 else if( p_intf->p_sys->pf_gtk_callback == NULL )
93 p_intf->p_sys->pf_gtk_callback = func;
95 /* else nothing, but we could do something here */
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 )
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;
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 )
119 if( TestMethod( INTF_METHOD_VAR, "gnome" ) )
124 if( TestProgram( "gnome-vlc" ) )
132 /*****************************************************************************
133 * intf_Open: initialize and create window
134 *****************************************************************************/
135 static int intf_Open( intf_thread_t *p_intf )
137 /* Allocate instance and initialize some members */
138 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
139 if( p_intf->p_sys == NULL )
141 intf_ErrMsg("error: %s", strerror(ENOMEM));
145 /* Initialize Gnome thread */
146 p_intf->p_sys->b_popup_changed = 0;
147 p_intf->p_sys->b_window_changed = 0;
148 p_intf->p_sys->b_playlist_changed = 0;
150 p_intf->p_sys->i_playing = -1;
151 p_intf->p_sys->b_slider_free = 1;
153 p_intf->p_sys->pf_gtk_callback = NULL;
154 p_intf->p_sys->pf_gdk_callback = NULL;
159 /*****************************************************************************
160 * intf_Close: destroy interface window
161 *****************************************************************************/
162 static void intf_Close( intf_thread_t *p_intf )
164 /* Destroy structure */
165 free( p_intf->p_sys );
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 )
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[] = { "" };
183 /* The data types we are allowed to receive */
184 static GtkTargetEntry target_table[] =
186 { "text/uri-list", 0, DROP_ACCEPT_TEXT_URI_LIST },
187 { "text/plain", 0, DROP_ACCEPT_TEXT_PLAIN }
190 /* intf_Manage callback timeout */
193 /* Initialize Gnome */
194 gnome_init( p_main->psz_arg0, VERSION, i_args, p_args );
196 /* Create some useful widgets that will certainly be used */
197 p_intf->p_sys->p_window = create_intf_window( );
198 p_intf->p_sys->p_popup = create_intf_popup( );
199 p_intf->p_sys->p_playlist = create_intf_playlist();
201 /* Set the title of the main window */
202 gtk_window_set_title( GTK_WINDOW(p_intf->p_sys->p_window),
203 VOUT_TITLE " (Gnome interface)");
205 /* Accept file drops on the main window */
206 gtk_drag_dest_set( GTK_WIDGET( p_intf->p_sys->p_window ),
207 GTK_DEST_DEFAULT_ALL, target_table,
208 1, GDK_ACTION_COPY );
209 /* Accept file drops on the playlist window */
210 gtk_drag_dest_set( GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
211 p_intf->p_sys->p_playlist ), "playlist_clist") ),
212 GTK_DEST_DEFAULT_ALL, target_table,
213 1, GDK_ACTION_COPY );
215 /* Get the interface labels */
216 p_intf->p_sys->p_slider_frame = gtk_object_get_data(
217 GTK_OBJECT( p_intf->p_sys->p_window ), "slider_frame" );
218 #define P_LABEL( name ) GTK_LABEL( gtk_object_get_data( \
219 GTK_OBJECT( p_intf->p_sys->p_window ), name ) )
220 p_intf->p_sys->p_label_title = P_LABEL( "title_label" );
221 p_intf->p_sys->p_label_chapter = P_LABEL( "chapter_label" );
224 /* Connect the date display to the slider */
225 #define P_SLIDER GTK_RANGE( gtk_object_get_data( \
226 GTK_OBJECT( p_intf->p_sys->p_window ), "slider" ) )
227 p_intf->p_sys->p_adj = gtk_range_get_adjustment( P_SLIDER );
229 gtk_signal_connect ( GTK_OBJECT( p_intf->p_sys->p_adj ), "value_changed",
230 GTK_SIGNAL_FUNC( GtkDisplayDate ), NULL );
231 p_intf->p_sys->f_adj_oldvalue = 0;
234 /* We don't create these ones yet because we perhaps won't need them */
235 p_intf->p_sys->p_about = NULL;
236 p_intf->p_sys->p_modules = NULL;
237 p_intf->p_sys->p_fileopen = NULL;
238 p_intf->p_sys->p_disc = NULL;
239 p_intf->p_sys->p_network = NULL;
240 p_intf->p_sys->p_preferences = NULL;
241 p_intf->p_sys->p_jump = NULL;
243 /* Store p_intf to keep an eye on it */
244 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
247 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_popup),
250 gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_playlist ),
253 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_adj),
256 /* Show the control window */
257 gtk_widget_show( p_intf->p_sys->p_window );
259 /* Sleep to avoid using all CPU - since some interfaces needs to access
260 * keyboard events, a 100ms delay is a good compromise */
261 i_timeout = gtk_timeout_add( INTF_IDLE_SLEEP / 1000, GnomeManage, p_intf );
263 /* Enter gnome mode */
266 /* Remove the timeout */
267 gtk_timeout_remove( i_timeout );
269 /* Get rid of stored callbacks so we can unload the plugin */
270 if( p_intf->p_sys->pf_gtk_callback != NULL )
272 p_intf->p_sys->pf_gtk_callback( );
273 p_intf->p_sys->pf_gtk_callback = NULL;
277 if( p_intf->p_sys->pf_gdk_callback != NULL )
279 p_intf->p_sys->pf_gdk_callback( );
280 p_intf->p_sys->pf_gdk_callback = NULL;
284 /* following functions are local */
286 /*****************************************************************************
287 * GnomeManage: manage main thread messages
288 *****************************************************************************
289 * In this function, called approx. 10 times a second, we check what the
290 * main program wanted to tell us.
291 *****************************************************************************/
292 static gint GnomeManage( gpointer p_data )
294 #define p_intf ((intf_thread_t *)p_data)
296 vlc_mutex_lock( &p_intf->change_lock );
298 /* If the "display popup" flag has changed */
299 if( p_intf->b_menu_change )
301 if( !GTK_IS_WIDGET( p_intf->p_sys->p_popup ) )
303 p_intf->p_sys->p_popup = create_intf_popup();
304 gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_popup ),
308 gnome_popup_menu_do_popup( p_intf->p_sys->p_popup,
309 NULL, NULL, NULL, NULL );
310 p_intf->b_menu_change = 0;
313 /* update the playlist */
314 GtkPlayListManage( p_intf );
316 if( p_intf->p_input != NULL && !p_intf->b_die )
318 vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
320 /* New input or stream map change */
321 if( p_intf->p_input->stream.b_changed )
323 GtkModeManage( p_intf );
326 /* Manage the slider */
327 if( p_intf->p_input->stream.b_seekable )
330 newvalue = p_intf->p_sys->p_adj->value;
332 #define p_area p_intf->p_input->stream.p_selected_area
333 /* If the user hasn't touched the slider since the last time,
334 * then the input can safely change it */
335 if( newvalue == p_intf->p_sys->f_adj_oldvalue )
337 /* Update the value */
338 p_intf->p_sys->p_adj->value = p_intf->p_sys->f_adj_oldvalue =
339 ( 100. * p_area->i_tell ) / p_area->i_size;
341 gtk_signal_emit_by_name( GTK_OBJECT( p_intf->p_sys->p_adj ),
344 /* Otherwise, send message to the input if the user has
345 * finished dragging the slider */
346 else if( p_intf->p_sys->b_slider_free )
348 off_t i_seek = ( newvalue * p_area->i_size ) / 100;
350 vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
351 input_Seek( p_intf->p_input, i_seek );
352 vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
354 /* Update the old value */
355 p_intf->p_sys->f_adj_oldvalue = newvalue;
359 vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
361 if( p_intf->p_sys->i_part !=
362 p_intf->p_input->stream.p_selected_area->i_part )
364 p_intf->p_sys->b_chapter_update = 1;
365 GtkSetupMenus( p_intf );
369 else if( !p_intf->b_die )
371 GtkModeManage( p_intf );
374 /* Manage core vlc functions through the callback */
375 p_intf->pf_manage( p_intf );
379 vlc_mutex_unlock( &p_intf->change_lock );
381 /* Prepare to die, young Skywalker */
388 vlc_mutex_unlock( &p_intf->change_lock );