1 /*****************************************************************************
2 * intf_gtk.c: Gtk+ interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: intf_gtk.c,v 1.21 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 gtk
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"
50 #include "interface.h"
52 #include "intf_playlist.h"
55 #include "video_output.h"
57 #include "gtk_callbacks.h"
58 #include "gtk_interface.h"
59 #include "gtk_support.h"
61 #include "gtk_display.h"
66 /*****************************************************************************
68 *****************************************************************************/
69 static int intf_Probe ( probedata_t *p_data );
70 static int intf_Open ( intf_thread_t *p_intf );
71 static void intf_Close ( intf_thread_t *p_intf );
72 static void intf_Run ( intf_thread_t *p_intf );
74 static gint GtkManage ( gpointer p_data );
76 /*****************************************************************************
77 * g_atexit: kludge to avoid the Gtk+ thread to segfault at exit
78 *****************************************************************************
79 * gtk_init() makes several calls to g_atexit() which calls atexit() to
80 * register tidying callbacks to be called at program exit. Since the Gtk+
81 * plugin is likely to be unloaded at program exit, we have to export this
82 * symbol to intercept the g_atexit() calls. Talk about crude hack.
83 *****************************************************************************/
84 void g_atexit( GVoidFunc func )
86 intf_thread_t *p_intf = p_main->p_intf;
88 if( p_intf->p_sys->pf_gdk_callback == NULL )
90 p_intf->p_sys->pf_gdk_callback = func;
92 else if( p_intf->p_sys->pf_gtk_callback == NULL )
94 p_intf->p_sys->pf_gtk_callback = func;
96 /* else nothing, but we could do something here */
100 /*****************************************************************************
101 * Functions exported as capabilities. They are declared as static so that
102 * we don't pollute the namespace too much.
103 *****************************************************************************/
104 void _M( intf_getfunctions )( function_list_t * p_function_list )
106 p_function_list->pf_probe = intf_Probe;
107 p_function_list->functions.intf.pf_open = intf_Open;
108 p_function_list->functions.intf.pf_close = intf_Close;
109 p_function_list->functions.intf.pf_run = intf_Run;
112 /*****************************************************************************
113 * intf_Probe: probe the interface and return a score
114 *****************************************************************************
115 * This function tries to initialize Gtk+ and returns a score to the
116 * plugin manager so that it can select the best plugin.
117 *****************************************************************************/
118 static int intf_Probe( probedata_t *p_data )
120 if( TestMethod( INTF_METHOD_VAR, "gtk" ) )
125 if( TestProgram( "gvlc" ) )
133 /*****************************************************************************
134 * intf_Open: initialize and create window
135 *****************************************************************************/
136 static int intf_Open( intf_thread_t *p_intf )
138 /* Allocate instance and initialize some members */
139 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
140 if( p_intf->p_sys == NULL )
142 intf_ErrMsg("error: %s", strerror(ENOMEM));
146 /* Initialize Gtk+ thread */
147 p_intf->p_sys->b_popup_changed = 0;
148 p_intf->p_sys->b_window_changed = 0;
149 p_intf->p_sys->b_playlist_changed = 0;
151 p_intf->p_sys->i_playing = -1;
152 p_intf->p_sys->b_slider_free = 1;
154 p_intf->p_sys->pf_gtk_callback = NULL;
155 p_intf->p_sys->pf_gdk_callback = NULL;
160 /*****************************************************************************
161 * intf_Close: destroy interface window
162 *****************************************************************************/
163 static void intf_Close( intf_thread_t *p_intf )
165 /* Destroy structure */
166 free( p_intf->p_sys );
169 /*****************************************************************************
170 * intf_Run: Gtk+ thread
171 *****************************************************************************
172 * this part of the interface is in a separate thread so that we can call
173 * gtk_main() from within it without annoying the rest of the program.
174 * XXX: the approach may look kludgy, and probably is, but I could not find
175 * a better way to dynamically load a Gtk+ interface at runtime.
176 *****************************************************************************/
177 static void intf_Run( intf_thread_t *p_intf )
179 /* gtk_init needs to know the command line. We don't care, so we
180 * give it an empty one */
181 char *p_args[] = { "" };
182 char **pp_args = 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 Gtk+ */
196 gtk_init( &i_args, &pp_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 " (Gtk+ 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 );
212 /* Accept file drops on the playlist window */
213 gtk_drag_dest_set( GTK_WIDGET( lookup_widget( p_intf->p_sys->p_playlist,
215 GTK_DEST_DEFAULT_ALL, target_table,
216 1, GDK_ACTION_COPY );
218 /* Get the interface labels */
219 p_intf->p_sys->p_slider_frame = GTK_FRAME( gtk_object_get_data(
220 GTK_OBJECT(p_intf->p_sys->p_window ), "slider_frame" ) );
222 #define P_LABEL( name ) GTK_LABEL( gtk_object_get_data( \
223 GTK_OBJECT( p_intf->p_sys->p_window ), name ) )
224 p_intf->p_sys->p_label_title = P_LABEL( "title_label" );
225 p_intf->p_sys->p_label_chapter = P_LABEL( "chapter_label" );
228 /* Connect the date display to the slider */
229 #define P_SLIDER GTK_RANGE( gtk_object_get_data( \
230 GTK_OBJECT( p_intf->p_sys->p_window ), "slider" ) )
231 p_intf->p_sys->p_adj = gtk_range_get_adjustment( P_SLIDER );
233 gtk_signal_connect ( GTK_OBJECT( p_intf->p_sys->p_adj ), "value_changed",
234 GTK_SIGNAL_FUNC( GtkDisplayDate ), NULL );
235 p_intf->p_sys->f_adj_oldvalue = 0;
238 /* We don't create these ones yet because we perhaps won't need them */
239 p_intf->p_sys->p_about = NULL;
240 p_intf->p_sys->p_modules = NULL;
241 p_intf->p_sys->p_fileopen = NULL;
242 p_intf->p_sys->p_disc = NULL;
243 p_intf->p_sys->p_network = NULL;
244 p_intf->p_sys->p_preferences = NULL;
245 p_intf->p_sys->p_jump = NULL;
247 /* Store p_intf to keep an eye on it */
248 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
251 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_popup),
254 gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_playlist ),
257 gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_adj),
260 /* Show the control window */
261 gtk_widget_show( p_intf->p_sys->p_window );
263 /* Sleep to avoid using all CPU - since some interfaces needs to access
264 * keyboard events, a 100ms delay is a good compromise */
265 i_timeout = gtk_timeout_add( INTF_IDLE_SLEEP / 1000, GtkManage, p_intf );
270 /* Remove the timeout */
271 gtk_timeout_remove( i_timeout );
273 /* Launch stored callbacks */
274 if( p_intf->p_sys->pf_gtk_callback != NULL )
276 p_intf->p_sys->pf_gtk_callback();
278 if( p_intf->p_sys->pf_gdk_callback != NULL )
280 p_intf->p_sys->pf_gdk_callback();
285 /* following functions are local */
287 /*****************************************************************************
288 * GtkManage: manage main thread messages
289 *****************************************************************************
290 * In this function, called approx. 10 times a second, we check what the
291 * main program wanted to tell us.
292 *****************************************************************************/
293 static gint GtkManage( gpointer p_data )
295 #define p_intf ((intf_thread_t *)p_data)
297 vlc_mutex_lock( &p_intf->change_lock );
299 /* If the "display popup" flag has changed */
300 if( p_intf->b_menu_change )
302 if( !GTK_IS_WIDGET( p_intf->p_sys->p_popup ) )
304 p_intf->p_sys->p_popup = create_intf_popup();
305 gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_popup ),
308 gtk_menu_popup( GTK_MENU( p_intf->p_sys->p_popup ),
309 NULL, NULL, NULL, NULL, 0, GDK_CURRENT_TIME );
310 p_intf->b_menu_change = 0;
313 /* update the playlist */
314 GtkPlayListManage( p_data );
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 )
329 float newvalue = p_intf->p_sys->p_adj->value;
331 #define p_area p_intf->p_input->stream.p_selected_area
332 /* If the user hasn't touched the slider since the last time,
333 * then the input can safely change it */
334 if( newvalue == p_intf->p_sys->f_adj_oldvalue )
336 /* Update the value */
337 p_intf->p_sys->p_adj->value = p_intf->p_sys->f_adj_oldvalue =
338 ( 100. * p_area->i_tell ) / p_area->i_size;
340 gtk_signal_emit_by_name( GTK_OBJECT( p_intf->p_sys->p_adj ),
343 /* Otherwise, send message to the input if the user has
344 * finished dragging the slider */
345 else if( p_intf->p_sys->b_slider_free )
347 off_t i_seek = ( newvalue * p_area->i_size ) / 100;
349 /* release the lock to be able to seek */
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 );