git.sesse.net Git - vlc/blob - plugins/gnome/intf_gnome.c

   1 /*****************************************************************************
   2  * intf_gnome.c: Gnome interface
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000 VideoLAN
   5  *
   6  * Authors:
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include "defs.h"
  27
  28 #include <errno.h>                                                 /* ENOMEM */
  29 #include <stdlib.h>                                                /* free() */
  30 #include <string.h>                                            /* strerror() */
  31 #include <sys/types.h>                        /* on BSD, uio.h needs types.h */
  32 #include <sys/uio.h>                                          /* for input.h */
  33
  34 #include <X11/Xlib.h>
  35 #include <X11/Xutil.h>
  36 #include <X11/keysym.h>
  37
  38 #include "config.h"
  39 #include "common.h"
  40 #include "threads.h"
  41 #include "mtime.h"
  42 #include "plugins.h"
  43
  44 #include "input.h"
  45 #include "video.h"
  46 #include "video_output.h"
  47
  48 #include "audio_output.h" /* needed for mute */
  49
  50 #include "intf_msg.h"
  51 #include "interface.h"
  52
  53 #include "main.h"
  54
  55 #include <stdio.h>
  56
  57 #include <gnome.h>
  58
  59 #include "intf_gnome_thread.h"
  60 #include "intf_gnome.h"
  61 #include "intf_gnome_interface.h"
  62 #include "intf_gnome_support.h"
  63
  64 /*****************************************************************************
  65  * intf_SysCreate: initialize and create window
  66  *****************************************************************************/
  67 int intf_SysCreate( intf_thread_t *p_intf )
  68 {
  69     char       *psz_display;
  70
  71     /* Allocate instance and initialize some members */
  72     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
  73     if( p_intf->p_sys == NULL )
  74     {
  75         intf_ErrMsg("error: %s\n", strerror(ENOMEM));
  76         return( 1 );
  77     }
  78
  79     p_intf->p_sys->p_gnome = malloc( sizeof( gnome_thread_t ) );
  80     if( p_intf->p_sys->p_gnome == NULL )
  81     {
  82         intf_ErrMsg("error: %s\n", strerror(ENOMEM));
  83         free( p_intf->p_sys );
  84         return( 1 );
  85     }
  86
  87     /* Open display, unsing 'vlc_display' or DISPLAY environment variable */
  88     psz_display = XDisplayName( main_GetPszVariable( VOUT_DISPLAY_VAR, NULL ) );
  89     p_intf->p_sys->p_display = XOpenDisplay( psz_display );
  90     if( !p_intf->p_sys->p_display )                                 /* error */
  91     {
  92         intf_ErrMsg("error: can't open display %s\n", psz_display );
  93         free( p_intf->p_sys->p_gnome );
  94         free( p_intf->p_sys );
  95         return( 1 );
  96     }
  97     p_intf->p_sys->i_screen = DefaultScreen( p_intf->p_sys->p_display );
  98
  99     /* Spawn base window - this window will include the video output window */
 100     if( GnomeCreateWindow( p_intf ) )
 101     {
 102         intf_ErrMsg( "error: can't create output window\n" );
 103         XCloseDisplay( p_intf->p_sys->p_display );
 104         free( p_intf->p_sys->p_gnome );
 105         free( p_intf->p_sys );
 106         return( 1 );
 107     }
 108
 109     /* Spawn video output thread */
 110     if( p_main->b_video )
 111     {
 112         p_intf->p_vout = vout_CreateThread( psz_display, p_intf->p_sys->window,
 113                                             p_intf->p_sys->i_width,
 114                                             p_intf->p_sys->i_height, NULL, 0,
 115                                             (void *)&p_intf->p_sys->colormap );
 116
 117         if( p_intf->p_vout == NULL )                                /* error */
 118         {
 119             intf_ErrMsg("error: can't create video output thread\n" );
 120             GnomeDestroyWindow( p_intf );
 121             XCloseDisplay( p_intf->p_sys->p_display );
 122             free( p_intf->p_sys->p_gnome );
 123             free( p_intf->p_sys );
 124             return( 1 );
 125         }
 126     }
 127
 128     /* Spawn Gnome thread */
 129     p_intf->p_sys->p_gnome->b_die = 0;
 130     p_intf->p_sys->p_gnome->b_error = 0;
 131
 132     p_intf->p_sys->p_gnome->b_popup_changed = 0;
 133     p_intf->p_sys->p_gnome->b_window_changed = 0;
 134     p_intf->p_sys->p_gnome->b_playlist_changed = 0;
 135
 136     vlc_thread_create( &p_intf->p_sys->p_gnome->thread_id, "gnome",
 137                        (void *)GnomeThread, p_intf->p_sys->p_gnome );
 138
 139     /* Disable screen saver and return */
 140     p_intf->p_sys->i_ss_count = 1;
 141     GnomeDisableScreenSaver( p_intf );
 142     return( 0 );
 143 }
 144
 145 /*****************************************************************************
 146  * intf_SysDestroy: destroy interface window
 147  *****************************************************************************/
 148 void intf_SysDestroy( intf_thread_t *p_intf )
 149 {
 150     /* Enable screen saver */
 151     GnomeEnableScreenSaver( p_intf );
 152
 153     /* Close input thread, if any (blocking) */
 154     if( p_intf->p_input )
 155     {
 156         input_DestroyThread( p_intf->p_input, NULL );
 157     }
 158
 159     /* Close video output thread, if any (blocking) */
 160     if( p_intf->p_vout )
 161     {
 162         vout_DestroyThread( p_intf->p_vout, NULL );
 163     }
 164
 165     /* Close gnome thread, if any (blocking) */
 166     if( p_intf->p_sys->p_gnome->thread_id )
 167     {
 168         p_intf->p_sys->p_gnome->b_die = 1;
 169         intf_Msg( "waiting for Gnome thread to terminate\n" );
 170         vlc_thread_join( p_intf->p_sys->p_gnome->thread_id );
 171         intf_Msg( "Gnome thread terminated\n" );
 172     }
 173
 174     /* Close main window and display */
 175     GnomeDestroyWindow( p_intf );
 176     XCloseDisplay( p_intf->p_sys->p_display );
 177
 178     /* Destroy structures */
 179     free( p_intf->p_sys->p_gnome );
 180     free( p_intf->p_sys );
 181 }
 182
 183 /*****************************************************************************
 184  * intf_SysManage: event loop
 185  *****************************************************************************/
 186 void intf_SysManage( intf_thread_t *p_intf )
 187 {
 188     /* Manage main window */
 189     GnomeManageWindow( p_intf );
 190
 191     /* Manage messages from the Gnome interface */
 192     GnomeManageInterface( p_intf );
 193 }
 194
 195 /* following functions are local */
 196
 197 /*****************************************************************************
 198  * GnomeCreateWindow: open and set-up X11 main window
 199  *****************************************************************************/
 200 static int GnomeCreateWindow( intf_thread_t *p_intf )
 201 {
 202     XSizeHints              xsize_hints;
 203     XSetWindowAttributes    xwindow_attributes;
 204     XGCValues               xgcvalues;
 205     XEvent                  xevent;
 206     boolean_t               b_expose;
 207     boolean_t               b_configure_notify;
 208     boolean_t               b_map_notify;
 209
 210     /* Set main window's size */
 211     p_intf->p_sys->i_width =  main_GetIntVariable( VOUT_WIDTH_VAR,
 212                                                    VOUT_WIDTH_DEFAULT );
 213     p_intf->p_sys->i_height = main_GetIntVariable( VOUT_HEIGHT_VAR,
 214                                                    VOUT_HEIGHT_DEFAULT );
 215
 216     /* Prepare window manager hints and properties */
 217     xsize_hints.base_width =            p_intf->p_sys->i_width;
 218     xsize_hints.base_height =           p_intf->p_sys->i_height;
 219     xsize_hints.flags =                 PSize;
 220     p_intf->p_sys->wm_protocols =       XInternAtom( p_intf->p_sys->p_display,
 221                                                      "WM_PROTOCOLS", True );
 222     p_intf->p_sys->wm_delete_window =   XInternAtom( p_intf->p_sys->p_display,
 223                                                      "WM_DELETE_WINDOW", True );
 224
 225     /* Prepare window attributes */
 226     xwindow_attributes.backing_store = Always;       /* save the hidden part */
 227     xwindow_attributes.background_pixel = WhitePixel( p_intf->p_sys->p_display,
 228                                                       p_intf->p_sys->i_screen );
 229
 230     xwindow_attributes.event_mask = ExposureMask | StructureNotifyMask;
 231
 232     /* Create the window and set hints - the window must receive ConfigureNotify
 233      * events, and, until it is displayed, Expose and MapNotify events. */
 234     p_intf->p_sys->window =
 235             XCreateWindow( p_intf->p_sys->p_display,
 236                            DefaultRootWindow( p_intf->p_sys->p_display ),
 237                            0, 0,
 238                            p_intf->p_sys->i_width, p_intf->p_sys->i_height, 1,
 239                            0, InputOutput, 0,
 240                            CWBackingStore | CWBackPixel | CWEventMask,
 241                            &xwindow_attributes );
 242
 243     /* Set window manager hints and properties: size hints, command,
 244      * window's name, and accepted protocols */
 245     XSetWMNormalHints( p_intf->p_sys->p_display, p_intf->p_sys->window,
 246                        &xsize_hints );
 247     XSetCommand( p_intf->p_sys->p_display, p_intf->p_sys->window,
 248                  p_main->ppsz_argv, p_main->i_argc );
 249     XStoreName( p_intf->p_sys->p_display, p_intf->p_sys->window, VOUT_TITLE );
 250     if( (p_intf->p_sys->wm_protocols == None)        /* use WM_DELETE_WINDOW */
 251         || (p_intf->p_sys->wm_delete_window == None)
 252         || !XSetWMProtocols( p_intf->p_sys->p_display, p_intf->p_sys->window,
 253                              &p_intf->p_sys->wm_delete_window, 1 ) )
 254     {
 255         /* WM_DELETE_WINDOW is not supported by window manager */
 256         intf_Msg("error: missing or bad window manager - please exit program kindly.\n");
 257     }
 258
 259     /* Creation of a graphic context that doesn't generate a GraphicsExpose
 260      * event when using functions like XCopyArea */
 261     xgcvalues.graphics_exposures = False;
 262     p_intf->p_sys->gc =  XCreateGC( p_intf->p_sys->p_display, p_intf->p_sys->window,
 263                                     GCGraphicsExposures, &xgcvalues);
 264
 265     /* Send orders to server, and wait until window is displayed - three
 266      * events must be received: a MapNotify event, an Expose event allowing
 267      * drawing in the window, and a ConfigureNotify to get the window
 268      * dimensions. Once those events have been received, only ConfigureNotify
 269      * events need to be received. */
 270     b_expose = 0;
 271     b_configure_notify = 0;
 272     b_map_notify = 0;
 273     XMapWindow( p_intf->p_sys->p_display, p_intf->p_sys->window);
 274     do
 275     {
 276         XNextEvent( p_intf->p_sys->p_display, &xevent);
 277         if( (xevent.type == Expose)
 278             && (xevent.xexpose.window == p_intf->p_sys->window) )
 279         {
 280             b_expose = 1;
 281         }
 282         else if( (xevent.type == MapNotify)
 283                  && (xevent.xmap.window == p_intf->p_sys->window) )
 284         {
 285             b_map_notify = 1;
 286         }
 287         else if( (xevent.type == ConfigureNotify)
 288                  && (xevent.xconfigure.window == p_intf->p_sys->window) )
 289         {
 290             b_configure_notify = 1;
 291             p_intf->p_sys->i_width = xevent.xconfigure.width;
 292             p_intf->p_sys->i_height = xevent.xconfigure.height;
 293         }
 294     } while( !( b_expose && b_configure_notify && b_map_notify ) );
 295
 296     XSelectInput( p_intf->p_sys->p_display, p_intf->p_sys->window,
 297                   StructureNotifyMask | KeyPressMask | ButtonPressMask );
 298
 299     if( XDefaultDepth(p_intf->p_sys->p_display, p_intf->p_sys->i_screen) == 8 )
 300     {
 301         /* Allocate a new palette */
 302         p_intf->p_sys->colormap = XCreateColormap( p_intf->p_sys->p_display,
 303                               DefaultRootWindow( p_intf->p_sys->p_display ),
 304                               DefaultVisual( p_intf->p_sys->p_display,
 305                                              p_intf->p_sys->i_screen ),
 306                               AllocAll );
 307
 308         xwindow_attributes.colormap = p_intf->p_sys->colormap;
 309         XChangeWindowAttributes( p_intf->p_sys->p_display,
 310                                  p_intf->p_sys->window,
 311                                  CWColormap, &xwindow_attributes );
 312     }
 313
 314     /* At this stage, the window is open, displayed, and ready to receive data */
 315     return( 0 );
 316 }
 317
 318 /*****************************************************************************
 319  * GnomeDestroyWindow: destroy X11 main window
 320  *****************************************************************************/
 321 static void GnomeDestroyWindow( intf_thread_t *p_intf )
 322 {
 323     XUnmapWindow( p_intf->p_sys->p_display, p_intf->p_sys->window );
 324     XFreeGC( p_intf->p_sys->p_display, p_intf->p_sys->gc );
 325     XDestroyWindow( p_intf->p_sys->p_display, p_intf->p_sys->window );
 326 }
 327
 328 /*****************************************************************************
 329  * GnomeManageWindow: manage X11 main window
 330  *****************************************************************************/
 331 static void GnomeManageWindow( intf_thread_t *p_intf )
 332 {
 333     XEvent      xevent;                                         /* X11 event */
 334     boolean_t   b_resized;                        /* window has been resized */
 335     char        i_key;                                    /* ISO Latin-1 key */
 336
 337     /* Handle X11 events: ConfigureNotify events are parsed to know if the
 338      * output window's size changed, MapNotify and UnmapNotify to know if the
 339      * window is mapped (and if the display is useful), and ClientMessages
 340      * to intercept window destruction requests */
 341     b_resized = 0;
 342     while( XCheckWindowEvent( p_intf->p_sys->p_display, p_intf->p_sys->window,
 343                               StructureNotifyMask | KeyPressMask |
 344                               ButtonPressMask, &xevent ) == True )
 345     {
 346         /* ConfigureNotify event: prepare  */
 347         if( (xevent.type == ConfigureNotify)
 348             && ((xevent.xconfigure.width != p_intf->p_sys->i_width)
 349                 || (xevent.xconfigure.height != p_intf->p_sys->i_height)) )
 350         {
 351             /* Update dimensions */
 352             b_resized = 1;
 353             p_intf->p_sys->i_width = xevent.xconfigure.width;
 354             p_intf->p_sys->i_height = xevent.xconfigure.height;
 355         }
 356         /* MapNotify event: change window status and disable screen saver */
 357         else if( xevent.type == MapNotify)
 358         {
 359             if( (p_intf->p_vout != NULL) && !p_intf->p_vout->b_active )
 360             {
 361                 GnomeDisableScreenSaver( p_intf );
 362                 p_intf->p_vout->b_active = 1;
 363             }
 364         }
 365         /* UnmapNotify event: change window status and enable screen saver */
 366         else if( xevent.type == UnmapNotify )
 367         {
 368             if( (p_intf->p_vout != NULL) && p_intf->p_vout->b_active )
 369             {
 370                 GnomeEnableScreenSaver( p_intf );
 371                 p_intf->p_vout->b_active = 0;
 372             }
 373         }
 374         /* Keyboard event */
 375         else if( xevent.type == KeyPress )
 376         {
 377             if( XLookupString( &xevent.xkey, &i_key, 1, NULL, NULL ) )
 378             {
 379                 if( intf_ProcessKey( p_intf, i_key ) )
 380                 {
 381                     intf_DbgMsg( "unhandled key '%c' (%i)\n", (char) i_key, i_key );
 382                 }
 383             }
 384         }
 385         /* Mouse click */
 386         else if( xevent.type == ButtonPress )
 387         {
 388             switch( ((XButtonEvent *)&xevent)->button )
 389             {
 390                 case Button1:
 391                     /* in this part we will eventually manage
 392                      * clicks for DVD navigation for instance */
 393                     break;
 394
 395                 case Button2:
 396                     GnomeTogglePointer( p_intf );
 397                     break;
 398
 399                 case Button3:
 400                     /* toggle the menu display */
 401                     vlc_mutex_lock( &p_intf->p_sys->p_gnome->change_lock );
 402                     p_intf->p_sys->p_gnome->b_popup_changed = 1;
 403                     vlc_mutex_unlock( &p_intf->p_sys->p_gnome->change_lock );
 404                     break;
 405             }
 406
 407         }
 408 #ifdef DEBUG
 409         /* Other event */
 410         else
 411         {
 412             intf_DbgMsg( "%p -> unhandled event type %d received\n",
 413                          p_intf, xevent.type );
 414         }
 415 #endif
 416     }
 417
 418     /* ClientMessage event - only WM_PROTOCOLS with WM_DELETE_WINDOW data
 419      * are handled - according to the man pages, the format is always 32
 420      * in this case */
 421     while( XCheckTypedEvent( p_intf->p_sys->p_display,
 422                              ClientMessage, &xevent ) )
 423     {
 424         if( (xevent.xclient.message_type == p_intf->p_sys->wm_protocols)
 425             && (xevent.xclient.data.l[0] == p_intf->p_sys->wm_delete_window ) )
 426         {
 427             p_intf->b_die = 1;
 428         }
 429         else
 430         {
 431             intf_DbgMsg( "%p -> unhandled ClientMessage received\n", p_intf );
 432         }
 433     }
 434
 435     /*
 436      * Handle vout or interface windows resizing
 437      */
 438     if( p_intf->p_vout != NULL )
 439     {
 440         if( b_resized )
 441         {
 442             /* If interface window has been resized, change vout size */
 443             intf_DbgMsg( "resizing output window\n" );
 444             vlc_mutex_lock( &p_intf->p_vout->change_lock );
 445             p_intf->p_vout->i_width =  p_intf->p_sys->i_width;
 446             p_intf->p_vout->i_height = p_intf->p_sys->i_height;
 447             p_intf->p_vout->i_changes |= VOUT_SIZE_CHANGE;
 448             vlc_mutex_unlock( &p_intf->p_vout->change_lock );
 449         }
 450         else if( (p_intf->p_vout->i_width  != p_intf->p_sys->i_width) ||
 451                  (p_intf->p_vout->i_height != p_intf->p_sys->i_height) )
 452         {
 453            /* If video output size has changed, change interface window size */
 454             intf_DbgMsg( "resizing output window\n" );
 455             p_intf->p_sys->i_width =    p_intf->p_vout->i_width;
 456             p_intf->p_sys->i_height =   p_intf->p_vout->i_height;
 457             XResizeWindow( p_intf->p_sys->p_display, p_intf->p_sys->window,
 458                            p_intf->p_sys->i_width, p_intf->p_sys->i_height );
 459         }
 460     }
 461 }
 462
 463 /*****************************************************************************
 464  * GnomeEnableScreenSaver: enable screen saver
 465  *****************************************************************************
 466  * This function enable the screen saver on a display after it had been
 467  * disabled by XDisableScreenSaver. Both functions use a counter mechanism to
 468  * know wether the screen saver can be activated or not: if n successive calls
 469  * are made to XDisableScreenSaver, n successive calls to XEnableScreenSaver
 470  * will be required before the screen saver could effectively be activated.
 471  *****************************************************************************/
 472 void GnomeEnableScreenSaver( intf_thread_t *p_intf )
 473 {
 474     if( p_intf->p_sys->i_ss_count++ == 0 )
 475     {
 476         intf_Msg( "Enabling screen saver\n" );
 477         XSetScreenSaver( p_intf->p_sys->p_display, p_intf->p_sys->i_ss_timeout,
 478                          p_intf->p_sys->i_ss_interval, p_intf->p_sys->i_ss_blanking,
 479                          p_intf->p_sys->i_ss_exposure );
 480     }
 481 }
 482
 483 /*****************************************************************************
 484  * GnomeDisableScreenSaver: disable screen saver
 485  *****************************************************************************
 486  * See XEnableScreenSaver
 487  *****************************************************************************/
 488 void GnomeDisableScreenSaver( intf_thread_t *p_intf )
 489 {
 490     if( --p_intf->p_sys->i_ss_count == 0 )
 491     {
 492         /* Save screen saver informations */
 493         XGetScreenSaver( p_intf->p_sys->p_display, &p_intf->p_sys->i_ss_timeout,
 494                          &p_intf->p_sys->i_ss_interval, &p_intf->p_sys->i_ss_blanking,
 495                          &p_intf->p_sys->i_ss_exposure );
 496
 497         /* Disable screen saver */
 498         intf_Msg("Disabling screen saver\n");
 499         XSetScreenSaver( p_intf->p_sys->p_display, 0,
 500                          p_intf->p_sys->i_ss_interval, p_intf->p_sys->i_ss_blanking,
 501                          p_intf->p_sys->i_ss_exposure );
 502     }
 503 }
 504
 505 /*****************************************************************************
 506  * GnomeTogglePointer: hide or show the mouse pointer
 507  *****************************************************************************
 508  * This function hides the X pointer if it is visible by putting it at
 509  * coordinates (32,32) and setting the pointer sprite to a blank one. To
 510  * show it again, we disable the sprite and restore the original coordinates.
 511  *****************************************************************************/
 512 void GnomeTogglePointer( intf_thread_t *p_intf )
 513 {
 514     static Cursor cursor;
 515     static boolean_t b_cursor = 0;
 516
 517     if( p_intf->p_sys->b_mouse )
 518     {
 519         p_intf->p_sys->b_mouse = 0;
 520
 521         if( !b_cursor )
 522         {
 523             XColor color;
 524             Pixmap blank = XCreatePixmap( p_intf->p_sys->p_display,
 525                                DefaultRootWindow(p_intf->p_sys->p_display),
 526                                1, 1, 1 );
 527
 528             XParseColor( p_intf->p_sys->p_display,
 529                          XCreateColormap( p_intf->p_sys->p_display,
 530                                           DefaultRootWindow(
 531                                                   p_intf->p_sys->p_display ),
 532                                           DefaultVisual(
 533                                                   p_intf->p_sys->p_display,
 534                                                   p_intf->p_sys->i_screen ),
 535                                           AllocNone ),
 536                          "black", &color );
 537
 538             cursor = XCreatePixmapCursor( p_intf->p_sys->p_display,
 539                            blank, blank, &color, &color, 1, 1 );
 540
 541             b_cursor = 1;
 542         }
 543         XDefineCursor( p_intf->p_sys->p_display,
 544                        p_intf->p_sys->window, cursor );
 545     }
 546     else
 547     {
 548         p_intf->p_sys->b_mouse = 1;
 549
 550         XUndefineCursor( p_intf->p_sys->p_display, p_intf->p_sys->window );
 551     }
 552 }
 553
 554 /*****************************************************************************
 555  * GnomeManageInterface: manage messages from the Gnome interface
 556
 557  *****************************************************************************
 558  * In this function, called approx. 10 times a second, we check what the
 559  * Gnome interface wanted to tell us.
 560  *****************************************************************************/
 561 static void GnomeManageInterface( intf_thread_t *p_intf )
 562 {
 563     gnome_thread_t *p_gnome = p_intf->p_sys->p_gnome;
 564
 565     /* lock the change structure */
 566     vlc_mutex_lock( &p_gnome->change_lock );
 567
 568     /* you killed my father, prepare to die */
 569     if( p_gnome->b_die )
 570     {
 571         p_intf->b_die = 1;
 572     }
 573
 574     if( p_gnome->b_activity_changed )
 575     {
 576         vlc_mutex_lock( &p_intf->p_vout->picture_lock );
 577         p_intf->p_vout->b_active = p_gnome->b_activity;
 578         /* having to access p_main sucks */
 579         p_main->p_aout->b_active = p_gnome->b_activity;
 580         vlc_mutex_unlock( &p_intf->p_vout->picture_lock );
 581
 582         p_gnome->b_activity_changed = 0;
 583     }
 584
 585     /* unlock the change structure */
 586     vlc_mutex_unlock( &p_gnome->change_lock );
 587 }
 588
 589 /*****************************************************************************
 590  * GnomeManageMain: manage main thread messages
 591  *****************************************************************************
 592  * In this function, called approx. 10 times a second, we check what the
 593  * main program wanted to tell us.
 594  *****************************************************************************/
 595 static gint GnomeManageMain( gpointer p_data )
 596 {
 597     gnome_thread_t *p_gnome = (void *)p_data;
 598
 599     /* lock the change structure */
 600     vlc_mutex_lock( &p_gnome->change_lock );
 601
 602     if( p_gnome->b_die )
 603     {
 604         /* unlock the change structure */
 605         vlc_mutex_unlock( &p_gnome->change_lock );
 606
 607         /* prepare to die, young man */
 608         gtk_main_quit();
 609         return( FALSE );
 610     }
 611
 612     /* if the "display popup" flag has changed */
 613     if( p_gnome->b_popup_changed )
 614     {
 615         gnome_popup_menu_do_popup( p_gnome->p_popup,
 616                                    NULL, NULL, NULL, NULL );
 617         p_gnome->b_popup_changed = 0;
 618     }
 619
 620     /* unlock the change structure */
 621     vlc_mutex_unlock( &p_gnome->change_lock );
 622
 623     return( TRUE );
 624 }
 625
 626 /*****************************************************************************
 627  * GnomeThread: special Gnome thread
 628  *****************************************************************************
 629  * this part of the interface is in a separate thread so that we can call
 630  * gtk_main() from within it without annoying the rest of the program.
 631  * XXX: the approach may look kludgy, and probably is, but I could not find
 632  * a better way to dynamically load a Gnome interface at runtime.
 633  *****************************************************************************/
 634 void GnomeThread( gnome_thread_t *p_gnome )
 635 {
 636     /* gnome_init needs to know the command line. We don't care, so we
 637      * give it an empty one */
 638     char *p_args[] = { };
 639
 640     /* Sleep to avoid using all CPU - since some interfaces needs to access
 641      * keyboard events, a 100ms delay is a good compromise */
 642     gtk_timeout_add( INTF_IDLE_SLEEP / 1000, GnomeManageMain, p_gnome );
 643
 644     gnome_init( "vlc", VERSION, 1, p_args );
 645
 646     /* create some useful widgets that will certainly be used */
 647     p_gnome->p_window = create_intf_window();
 648     p_gnome->p_popup = create_intf_popup( );
 649
 650     /* we don't create these ones yet because we perhaps won't need them */
 651     p_gnome->p_about = NULL;
 652     p_gnome->p_playlist = NULL;
 653
 654     /* store p_sys to keep an eye on it */
 655     gtk_object_set_data( GTK_OBJECT(p_gnome->p_window), "p_gnome", p_gnome );
 656     gtk_object_set_data( GTK_OBJECT(p_gnome->p_popup), "p_gnome", p_gnome );
 657
 658     /* show the control window */
 659     //gtk_widget_show( p_gnome->p_window );
 660
 661     /* enter gnome mode */
 662     gtk_main();
 663 }
 664