git.sesse.net Git - vlc/blob - plugins/gtk/intf_gtk.c

   1 /*****************************************************************************
   2  * intf_gtk.c: Gtk+ interface
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000 VideoLAN
   5  * $Id: intf_gtk.c,v 1.20 2001/05/19 00:39:30 stef Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Stéphane Borel <stef@via.ecp.fr>
   9  *
  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.
  14  *
  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.
  19  *
  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  *****************************************************************************/
  24
  25 #define MODULE_NAME gtk
  26 #include "modules_inner.h"
  27
  28 /*****************************************************************************
  29  * Preamble
  30  *****************************************************************************/
  31 #include "defs.h"
  32
  33 #include <errno.h>                                                 /* ENOMEM */
  34 #include <stdlib.h>                                                /* free() */
  35 #include <string.h>                                            /* strerror() */
  36 #include <stdio.h>
  37
  38 #include <gtk/gtk.h>
  39
  40 #include "config.h"
  41 #include "common.h"
  42 #include "threads.h"
  43 #include "mtime.h"
  44 #include "tests.h"
  45 #include "modules.h"
  46
  47 #include "stream_control.h"
  48 #include "input_ext-intf.h"
  49
  50 #include "interface.h"
  51 #include "intf_msg.h"
  52 #include "intf_playlist.h"
  53
  54 #include "video.h"
  55 #include "video_output.h"
  56
  57 #include "gtk_callbacks.h"
  58 #include "gtk_interface.h"
  59 #include "gtk_support.h"
  60 #include "gtk_menu.h"
  61 #include "intf_gtk.h"
  62
  63 #include "main.h"
  64
  65 /*****************************************************************************
  66  * Local prototypes.
  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 );
  72
  73 static gint GtkManage       ( gpointer p_data );
  74 static gint GtkModeManage   ( intf_thread_t * p_intf );
  75 static void GtkDisplayDate  ( GtkAdjustment *p_adj );
  76
  77 /*****************************************************************************
  78  * g_atexit: kludge to avoid the Gtk+ 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 Gtk+
  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 )
  86 {
  87     intf_thread_t *p_intf = p_main->p_intf;
  88
  89     if( p_intf->p_sys->pf_gdk_callback == NULL )
  90     {
  91         p_intf->p_sys->pf_gdk_callback = func;
  92     }
  93     else if( p_intf->p_sys->pf_gtk_callback == NULL )
  94     {
  95         p_intf->p_sys->pf_gtk_callback = func;
  96     }
  97     /* else nothing, but we could do something here */
  98     return;
  99 }
 100
 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 )
 106 {
 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;
 111 }
 112
 113 /*****************************************************************************
 114  * intf_Probe: probe the interface and return a score
 115  *****************************************************************************
 116  * This function tries to initialize Gtk+ 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 )
 120 {
 121     if( TestMethod( INTF_METHOD_VAR, "gtk" ) )
 122     {
 123         return( 999 );
 124     }
 125
 126     if( TestProgram( "gvlc" ) )
 127     {
 128         return( 190 );
 129     }
 130
 131     return( 90 );
 132 }
 133
 134 /*****************************************************************************
 135  * intf_Open: initialize and create window
 136  *****************************************************************************/
 137 static int intf_Open( intf_thread_t *p_intf )
 138 {
 139     /* Allocate instance and initialize some members */
 140     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
 141     if( p_intf->p_sys == NULL )
 142     {
 143         intf_ErrMsg("error: %s", strerror(ENOMEM));
 144         return( 1 );
 145     }
 146
 147     /* Initialize Gtk+ 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;
 151
 152     p_intf->p_sys->b_slider_free = 1;
 153
 154     p_intf->p_sys->pf_gtk_callback = NULL;
 155     p_intf->p_sys->pf_gdk_callback = NULL;
 156
 157     return( 0 );
 158 }
 159
 160 /*****************************************************************************
 161  * intf_Close: destroy interface window
 162  *****************************************************************************/
 163 static void intf_Close( intf_thread_t *p_intf )
 164 {
 165     /* Destroy structure */
 166     free( p_intf->p_sys );
 167 }
 168
 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 )
 178 {
 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;
 183     int    i_args   = 1;
 184
 185     /* The data types we are allowed to receive */
 186     static GtkTargetEntry target_table[] =
 187     {
 188         { "text/uri-list", 0, DROP_ACCEPT_TEXT_URI_LIST },
 189         { "text/plain", 0, DROP_ACCEPT_TEXT_PLAIN }
 190     };
 191
 192     /* intf_Manage callback timeout */
 193     int i_timeout;
 194
 195     /* Initialize Gtk+ */
 196     gtk_init( &i_args, &pp_args );
 197
 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();
 202
 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)");
 206
 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
 212     /* Accept file drops on the playlist window */
 213     gtk_drag_dest_set( GTK_WIDGET( lookup_widget( p_intf->p_sys->p_playlist,
 214                                    "playlist_clist") ),
 215                        GTK_DEST_DEFAULT_ALL, target_table,
 216                        1, GDK_ACTION_COPY );
 217
 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" ) );
 221
 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" );
 226 #undef P_LABEL
 227
 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 );
 232
 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;
 236 #undef P_SLIDER
 237
 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;
 246
 247     /* Store p_intf to keep an eye on it */
 248     gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_window),
 249                          "p_intf", p_intf );
 250
 251     gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_popup),
 252                          "p_intf", p_intf );
 253
 254     gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_playlist ),
 255                          "p_intf", p_intf );
 256
 257     gtk_object_set_data( GTK_OBJECT(p_intf->p_sys->p_adj),
 258                          "p_intf", p_intf );
 259
 260     /* Show the control window */
 261     gtk_widget_show( p_intf->p_sys->p_window );
 262
 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 );
 266
 267     /* Enter Gtk mode */
 268     gtk_main();
 269
 270     /* Remove the timeout */
 271     gtk_timeout_remove( i_timeout );
 272
 273     /* Launch stored callbacks */
 274     if( p_intf->p_sys->pf_gtk_callback != NULL )
 275     {
 276         p_intf->p_sys->pf_gtk_callback();
 277
 278         if( p_intf->p_sys->pf_gdk_callback != NULL )
 279         {
 280             p_intf->p_sys->pf_gdk_callback();
 281         }
 282     }
 283 }
 284
 285 /* following functions are local */
 286
 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
 294 static gint GtkManage( gpointer p_data )
 295 {
 296 #define p_intf ((intf_thread_t *)p_data)
 297
 298     vlc_mutex_lock( &p_intf->change_lock );
 299
 300     /* If the "display popup" flag has changed */
 301     if( p_intf->b_menu_change )
 302     {
 303         if( !GTK_IS_WIDGET( p_intf->p_sys->p_popup ) )
 304         {
 305             p_intf->p_sys->p_popup = create_intf_popup();
 306             gtk_object_set_data( GTK_OBJECT( p_intf->p_sys->p_popup ),
 307                                  "p_popup", p_intf );
 308         }
 309         gtk_menu_popup( GTK_MENU( p_intf->p_sys->p_popup ),
 310                         NULL, NULL, NULL, NULL, 0, GDK_CURRENT_TIME );
 311         p_intf->b_menu_change = 0;
 312     }
 313
 314     /* update the playlist */
 315 //    GtkPlayListManage( p_data );
 316
 317     if( p_intf->p_input != NULL && !p_intf->b_die )
 318     {
 319         vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
 320
 321         /* New input or stream map change */
 322         if( p_intf->p_input->stream.b_changed )
 323         {
 324             GtkModeManage( p_intf );
 325         }
 326
 327         /* Manage the slider */
 328         if( p_intf->p_input->stream.b_seekable )
 329         {
 330             float newvalue = p_intf->p_sys->p_adj->value;
 331
 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 )
 336             {
 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;
 340
 341                 gtk_signal_emit_by_name( GTK_OBJECT( p_intf->p_sys->p_adj ),
 342                                          "value_changed" );
 343             }
 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 )
 347             {
 348                 off_t i_seek = ( newvalue * p_area->i_size ) / 100;
 349
 350                 /* release the lock to be able to seek */
 351                 vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
 352                 input_Seek( p_intf->p_input, i_seek );
 353                 vlc_mutex_lock( &p_intf->p_input->stream.stream_lock );
 354
 355                 /* Update the old value */
 356                 p_intf->p_sys->f_adj_oldvalue = newvalue;
 357             }
 358 #undef p_area
 359         }
 360         vlc_mutex_unlock( &p_intf->p_input->stream.stream_lock );
 361
 362         if( p_intf->p_sys->i_part !=
 363             p_intf->p_input->stream.p_selected_area->i_part )
 364         {
 365             p_intf->p_sys->b_chapter_update = 1;
 366             GtkSetupMenus( p_intf );
 367         }
 368
 369     }
 370     else if( !p_intf->b_die )
 371     {
 372         GtkModeManage( p_intf );
 373     }
 374
 375     /* Manage core vlc functions through the callback */
 376     p_intf->pf_manage( p_intf );
 377
 378     if( p_intf->b_die )
 379     {
 380         vlc_mutex_unlock( &p_intf->change_lock );
 381
 382         /* Prepare to die, young Skywalker */
 383         gtk_main_quit();
 384
 385         /* Just in case */
 386         return( FALSE );
 387     }
 388
 389     vlc_mutex_unlock( &p_intf->change_lock );
 390
 391     return( TRUE );
 392
 393 #undef p_intf
 394 }
 395
 396 /*****************************************************************************
 397  * GtkDisplayDate: display stream date
 398  *****************************************************************************
 399  * This function displays the current date related to the position in
 400  * the stream. It is called whenever the slider changes its value.
 401  * The lock has to be taken before you call the function.
 402  *****************************************************************************/
 403 void GtkDisplayDate( GtkAdjustment *p_adj )
 404 {
 405     intf_thread_t *p_intf;
 406
 407     p_intf = gtk_object_get_data( GTK_OBJECT( p_adj ), "p_intf" );
 408
 409     if( p_intf->p_input != NULL )
 410     {
 411 #define p_area p_intf->p_input->stream.p_selected_area
 412         char psz_time[ OFFSETTOTIME_MAX_SIZE ];
 413
 414         gtk_frame_set_label( GTK_FRAME( p_intf->p_sys->p_slider_frame ),
 415                             input_OffsetToTime( p_intf->p_input, psz_time,
 416                                    ( p_area->i_size * p_adj->value ) / 100 ) );
 417 #undef p_area
 418      }
 419 }
 420
 421
 422 /*****************************************************************************
 423  * GtkModeManage: actualise the aspect of the interface whenever the input
 424  *                changes.
 425  *****************************************************************************
 426  * The lock has to be taken before you call the function.
 427  *****************************************************************************/
 428 static gint GtkModeManage( intf_thread_t * p_intf )
 429 {
 430     GtkWidget *     p_dvd_box;
 431     GtkWidget *     p_file_box;
 432     GtkWidget *     p_network_box;
 433     GtkWidget *     p_slider;
 434     GtkWidget *     p_label;
 435     boolean_t       b_control;
 436
 437 #define GETWIDGET( ptr, name ) GTK_WIDGET( gtk_object_get_data( GTK_OBJECT( \
 438                            p_intf->p_sys->ptr ) , ( name ) ) )
 439     /* hide all boxes except default file box */
 440     p_file_box = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 441                  p_intf->p_sys->p_window ), "file_box" ) );
 442     gtk_widget_hide( GTK_WIDGET( p_file_box ) );
 443
 444     p_network_box = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 445                  p_intf->p_sys->p_window ), "network_box" ) );
 446     gtk_widget_hide( GTK_WIDGET( p_network_box ) );
 447
 448     p_dvd_box = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 449                  p_intf->p_sys->p_window ), "dvd_box" ) );
 450     gtk_widget_hide( GTK_WIDGET( p_dvd_box ) );
 451
 452     /* hide slider */
 453     p_slider = GTK_WIDGET( gtk_object_get_data( GTK_OBJECT(
 454                            p_intf->p_sys->p_window ), "slider_frame" ) );
 455     gtk_widget_hide( GTK_WIDGET( p_slider ) );
 456
 457     /* controls unavailable */
 458     b_control = 0;
 459
 460     /* show the box related to current input mode */
 461     if( p_intf->p_input != NULL )
 462     {
 463         switch( p_intf->p_input->stream.i_method & 0xf0 )
 464         {
 465             case INPUT_METHOD_FILE:
 466                 gtk_widget_show( GTK_WIDGET( p_file_box ) );
 467                 p_label = gtk_object_get_data( GTK_OBJECT(
 468                             p_intf->p_sys->p_window ),
 469                             "label_status" );
 470                 gtk_label_set_text( GTK_LABEL( p_label ),
 471                                     p_intf->p_input->p_source );
 472                 break;
 473             case INPUT_METHOD_DISC:
 474                 gtk_widget_show( GTK_WIDGET( p_dvd_box ) );
 475                 break;
 476             case INPUT_METHOD_NETWORK:
 477                 gtk_widget_show( GTK_WIDGET( p_network_box ) );
 478                 p_label = gtk_object_get_data( GTK_OBJECT(
 479                             p_intf->p_sys->p_window ),
 480                             "network_address_label" );
 481                 gtk_label_set_text( GTK_LABEL( p_label ),
 482                                     p_intf->p_input->p_source );
 483                 break;
 484             default:
 485                 intf_ErrMsg( "intf error: can't determine input method" );
 486                 break;
 487         }
 488
 489         /* slider for seekable streams */
 490         if( p_intf->p_input->stream.b_seekable )
 491         {
 492             gtk_widget_show( GTK_WIDGET( p_slider ) );
 493         }
 494
 495         /* control buttons for free pace streams */
 496         b_control = p_intf->p_input->stream.b_pace_control;
 497
 498         /* get ready for menu regeneration */
 499         p_intf->p_sys->b_title_update = 1;
 500         p_intf->p_sys->b_chapter_update = 1;
 501         p_intf->p_sys->b_angle_update = 1;
 502         p_intf->p_sys->b_audio_update = 1;
 503         p_intf->p_sys->b_spu_update = 1;
 504         p_intf->p_sys->i_part = 0;
 505
 506         p_intf->p_input->stream.b_changed = 0;
 507         intf_WarnMsg( 3,
 508                       "intf info: menus refreshed as stream has changed" );
 509     }
 510     else
 511     {
 512         /* default mode */
 513         p_label = gtk_object_get_data( GTK_OBJECT( p_intf->p_sys->p_window ),
 514                         "label_status" );
 515         gtk_label_set_text( GTK_LABEL( p_label ), "" );
 516         gtk_widget_show( GTK_WIDGET( p_file_box ) );
 517
 518         /* unsensitize menus */
 519         gtk_widget_set_sensitive( GETWIDGET(p_window,"menubar_title"), FALSE );
 520         gtk_widget_set_sensitive( GETWIDGET(p_window,"menubar_chapter"),
 521                                   FALSE );
 522         gtk_widget_set_sensitive( GETWIDGET(p_window,"menubar_angle"), FALSE );
 523         gtk_widget_set_sensitive( GETWIDGET(p_window,"menubar_audio"), FALSE );
 524         gtk_widget_set_sensitive( GETWIDGET(p_window,"menubar_subpictures"),
 525                                   FALSE );
 526         gtk_widget_set_sensitive( GETWIDGET(p_popup,"popup_navigation"),
 527                                   FALSE );
 528         gtk_widget_set_sensitive( GETWIDGET(p_popup,"popup_angle"), FALSE );
 529         gtk_widget_set_sensitive( GETWIDGET(p_popup,"popup_audio"), FALSE );
 530         gtk_widget_set_sensitive( GETWIDGET(p_popup,"popup_subpictures"),
 531                                   FALSE );
 532     }
 533
 534     /* set control items */
 535     gtk_widget_set_sensitive( GETWIDGET(p_window, "toolbar_back"), FALSE );
 536     gtk_widget_set_sensitive( GETWIDGET(p_window, "toolbar_stop"), b_control );
 537     gtk_widget_set_sensitive( GETWIDGET(p_window, "toolbar_pause"), b_control );
 538     gtk_widget_set_sensitive( GETWIDGET(p_window, "toolbar_slow"), b_control );
 539     gtk_widget_set_sensitive( GETWIDGET(p_window, "toolbar_fast"), b_control );
 540     gtk_widget_set_sensitive( GETWIDGET(p_popup, "popup_back"), FALSE );
 541     gtk_widget_set_sensitive( GETWIDGET(p_popup, "popup_stop"), b_control );
 542     gtk_widget_set_sensitive( GETWIDGET(p_popup, "popup_pause"), b_control );
 543     gtk_widget_set_sensitive( GETWIDGET(p_popup, "popup_slow"), b_control );
 544     gtk_widget_set_sensitive( GETWIDGET(p_popup, "popup_fast"), b_control );
 545
 546 #undef GETWIDGET
 547     return TRUE;
 548 }