1 /*****************************************************************************
2 * intf_gnome.c: Gnome interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: intf_gnome.c,v 1.10 2001/02/13 04:29:46 sam Exp $
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
29 #include <errno.h> /* ENOMEM */
30 #include <stdlib.h> /* free() */
31 #include <string.h> /* strerror() */
37 #include <X11/Xutil.h>
38 #include <X11/keysym.h>
49 #include "stream_control.h"
50 #include "input_ext-intf.h"
53 #include "interface.h"
55 #include "gnome_sys.h"
56 #include "gnome_interface.h"
57 #include "gnome_support.h"
61 /*****************************************************************************
63 *****************************************************************************/
64 static int intf_Probe ( probedata_t *p_data );
65 static int intf_Open ( intf_thread_t *p_intf );
66 static void intf_Close ( intf_thread_t *p_intf );
67 static void intf_Run ( intf_thread_t *p_intf );
69 static gint GnomeManage ( gpointer p_data );
71 /*****************************************************************************
72 * g_atexit: kludge to avoid the Gnome thread to segfault at exit
73 *****************************************************************************
74 * gtk_init() makes several calls to g_atexit() which calls atexit() to
75 * register tidying callbacks to be called at program exit. Since the Gnome
76 * plugin is likely to be unloaded at program exit, we have to export this
77 * symbol to intercept the g_atexit() calls. Talk about crude hack.
78 *****************************************************************************/
79 void g_atexit( GVoidFunc func )
81 intf_thread_t *p_intf = p_main->p_intf;
83 if( p_intf->p_sys->pf_gdk_callback == NULL )
85 p_intf->p_sys->pf_gdk_callback = func;
87 else if( p_intf->p_sys->pf_gtk_callback == NULL )
89 p_intf->p_sys->pf_gtk_callback = func;
91 /* else nothing, but we could do something here */
95 /*****************************************************************************
96 * Functions exported as capabilities. They are declared as static so that
97 * we don't pollute the namespace too much.
98 *****************************************************************************/
99 void intf_getfunctions( function_list_t * p_function_list )
101 p_function_list->pf_probe = intf_Probe;
102 p_function_list->functions.intf.pf_open = intf_Open;
103 p_function_list->functions.intf.pf_close = intf_Close;
104 p_function_list->functions.intf.pf_run = intf_Run;
107 /*****************************************************************************
108 * intf_Probe: probe the interface and return a score
109 *****************************************************************************
110 * This function tries to initialize Gnome and returns a score to the
111 * plugin manager so that it can select the best plugin.
112 *****************************************************************************/
113 static int intf_Probe( probedata_t *p_data )
115 if( TestMethod( INTF_METHOD_VAR, "gnome" ) )
123 /*****************************************************************************
124 * intf_Open: initialize and create window
125 *****************************************************************************/
126 static int intf_Open( intf_thread_t *p_intf )
128 /* Allocate instance and initialize some members */
129 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
130 if( p_intf->p_sys == NULL )
132 intf_ErrMsg("error: %s", strerror(ENOMEM));
136 /* Initialize Gnome thread */
137 p_intf->p_sys->b_popup_changed = 0;
138 p_intf->p_sys->b_window_changed = 0;
139 p_intf->p_sys->b_playlist_changed = 0;
141 p_intf->p_sys->b_scale_isfree = 1;
143 p_intf->p_sys->pf_gtk_callback = NULL;
144 p_intf->p_sys->pf_gdk_callback = NULL;
149 /*****************************************************************************
150 * intf_Close: destroy interface window
151 *****************************************************************************/
152 static void intf_Close( intf_thread_t *p_intf )
154 /* Destroy structure */
155 free( p_intf->p_sys );
158 /*****************************************************************************
159 * intf_Run: Gnome thread
160 *****************************************************************************
161 * this part of the interface is in a separate thread so that we can call
162 * gtk_main() from within it without annoying the rest of the program.
163 * XXX: the approach may look kludgy, and probably is, but I could not find
164 * a better way to dynamically load a Gnome interface at runtime.
165 *****************************************************************************/
166 static void intf_Run( intf_thread_t *p_intf )
168 /* gnome_init needs to know the command line. We don't care, so we
169 * give it an empty one */
170 char *p_args[] = { };
172 /* Initialize Gnome */
173 gnome_init( p_main->psz_arg0, VERSION, 1, p_args );
175 /* create some useful widgets that will certainly be used */
176 p_intf->p_sys->p_window = create_intf_window();
177 p_intf->p_sys->p_popup = create_intf_popup( );
179 /* we don't create these ones yet because we perhaps won't need them */
180 p_intf->p_sys->p_about = NULL;
181 p_intf->p_sys->p_playlist = NULL;
182 p_intf->p_sys->p_fileopen = NULL;
184 /* store p_sys to keep an eye on it */
185 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
188 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_popup),
191 /* show the control window */
192 gtk_widget_show( p_intf->p_sys->p_window );
194 /* Sleep to avoid using all CPU - since some interfaces needs to access
195 * keyboard events, a 100ms delay is a good compromise */
196 p_intf->p_sys->i_timeout = gtk_timeout_add( INTF_IDLE_SLEEP / 1000,
197 GnomeManage, p_intf );
199 /* enter gnome mode */
202 /* launch stored callbacks */
203 if( p_intf->p_sys->pf_gtk_callback != NULL )
205 p_intf->p_sys->pf_gtk_callback();
207 if( p_intf->p_sys->pf_gdk_callback != NULL )
209 p_intf->p_sys->pf_gdk_callback();
214 /* following functions are local */
216 /*****************************************************************************
217 * GnomeManage: manage main thread messages
218 *****************************************************************************
219 * In this function, called approx. 10 times a second, we check what the
220 * main program wanted to tell us.
221 *****************************************************************************/
222 static gint GnomeManage( gpointer p_data )
224 intf_thread_t *p_intf = (void *)p_data;
226 vlc_mutex_lock( &p_intf->p_sys->change_lock );
228 /* If the "display popup" flag has changed */
229 if( p_intf->b_menu_change )
231 gnome_popup_menu_do_popup( p_intf->p_sys->p_popup,
232 NULL, NULL, NULL, NULL );
233 p_intf->b_menu_change = 0;
236 /* Manage the slider */
237 if( p_intf->p_input != NULL && p_intf->p_sys->p_window != NULL
238 && p_intf->p_sys->b_scale_isfree )
241 GtkAdjustment *p_adj;
243 p_scale = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
244 p_intf->p_sys->p_window ), "hscale" ) );
245 p_adj = gtk_range_get_adjustment ( GTK_RANGE( p_scale ) );
247 /* Update the value */
248 p_adj->value = ( 100. * p_intf->p_input->stream.i_tell )
249 / p_intf->p_input->stream.i_size;
251 /* Gtv does it this way. Why not. */
252 gtk_range_set_adjustment ( GTK_RANGE( p_scale ), p_adj );
253 gtk_range_slider_update ( GTK_RANGE( p_scale ) );
254 gtk_range_clear_background ( GTK_RANGE( p_scale ) );
255 gtk_range_draw_background ( GTK_RANGE( p_scale ) );
258 /* Manage core vlc functions through the callback */
259 p_intf->pf_manage( p_intf );
263 /* Make sure we won't be called again */
264 gtk_timeout_remove( p_intf->p_sys->i_timeout );
266 vlc_mutex_unlock( &p_intf->p_sys->change_lock );
268 /* prepare to die, young man */
273 vlc_mutex_unlock( &p_intf->p_sys->change_lock );