git.sesse.net Git - vlc/blob - modules/control/showintf.c

   1 /*****************************************************************************
   2  * showintf.c: control the display of the interface in fullscreen mode
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Olivier Teuliere <ipkiss@via.ecp.fr>
   8  *
   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.
  13  *
  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.
  18  *
  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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc_interface.h>
  34 #include <vlc_vout.h>
  35 #include <vlc_playlist.h>
  36
  37 #ifdef HAVE_UNISTD_H
  38 #    include <unistd.h>
  39 #endif
  40
  41 /*****************************************************************************
  42  * intf_sys_t: description and status of interface
  43  *****************************************************************************/
  44 struct intf_sys_t
  45 {
  46     vlc_object_t * p_vout;
  47     bool     b_button_pressed;
  48     bool     b_triggered;
  49     int            i_threshold;
  50 };
  51
  52 /*****************************************************************************
  53  * Local prototypes.
  54  *****************************************************************************/
  55 int  E_(Open) ( vlc_object_t * );
  56 void E_(Close)( vlc_object_t * );
  57 static void RunIntf( intf_thread_t *p_intf );
  58 static int  InitThread( intf_thread_t *p_intf );
  59 static int  MouseEvent( vlc_object_t *, char const *,
  60                         vlc_value_t, vlc_value_t, void * );
  61
  62 /*****************************************************************************
  63  * Module descriptor
  64  *****************************************************************************/
  65 #define THRESHOLD_TEXT N_( "Threshold" )
  66 #define THRESHOLD_LONGTEXT N_( "Height of the zone triggering the interface." )
  67
  68 vlc_module_begin();
  69     set_shortname( "Showintf" );
  70     add_integer( "showintf-threshold", 10, NULL, THRESHOLD_TEXT, THRESHOLD_LONGTEXT, true );
  71     set_description( _("Show interface with mouse") );
  72
  73     set_capability( "interface", 0 );
  74     set_callbacks( E_(Open), E_(Close) );
  75 vlc_module_end();
  76
  77 /*****************************************************************************
  78  * Open: initialize interface
  79  *****************************************************************************/
  80 int E_(Open)( vlc_object_t *p_this )
  81 {
  82     intf_thread_t *p_intf = (intf_thread_t *)p_this;
  83
  84     /* Allocate instance and initialize some members */
  85     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
  86     if( p_intf->p_sys == NULL )
  87     {
  88         return( 1 );
  89     };
  90
  91     p_intf->pf_run = RunIntf;
  92
  93     return( 0 );
  94 }
  95
  96 /*****************************************************************************
  97  * Close: destroy interface
  98  *****************************************************************************/
  99 void E_(Close)( vlc_object_t *p_this )
 100 {
 101     intf_thread_t *p_intf = (intf_thread_t *)p_this;
 102
 103     /* Destroy structure */
 104     free( p_intf->p_sys );
 105 }
 106
 107
 108 /*****************************************************************************
 109  * RunIntf: main loop
 110  *****************************************************************************/
 111 static void RunIntf( intf_thread_t *p_intf )
 112 {
 113     p_intf->p_sys->p_vout = NULL;
 114
 115     if( InitThread( p_intf ) < 0 )
 116     {
 117         msg_Err( p_intf, "cannot initialize interface" );
 118         return;
 119     }
 120
 121     /* Main loop */
 122     while( !intf_ShouldDie( p_intf ) )
 123     {
 124         vlc_mutex_lock( &p_intf->change_lock );
 125
 126         /* Notify the interfaces */
 127         if( p_intf->p_sys->b_triggered )
 128         {
 129             playlist_t *p_playlist = pl_Yield( p_intf );
 130             var_SetBool( p_playlist, "intf-show", true );
 131             vlc_object_release( p_playlist );
 132             p_intf->p_sys->b_triggered = false;
 133         }
 134
 135         vlc_mutex_unlock( &p_intf->change_lock );
 136
 137
 138         /* Take care of the video output */
 139         if( p_intf->p_sys->p_vout && p_intf->p_sys->p_vout->b_die )
 140         {
 141             var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 142                              MouseEvent, p_intf );
 143             var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 144                              MouseEvent, p_intf );
 145             vlc_object_release( p_intf->p_sys->p_vout );
 146             p_intf->p_sys->p_vout = NULL;
 147         }
 148
 149         if( p_intf->p_sys->p_vout == NULL )
 150         {
 151             p_intf->p_sys->p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 152                                                      FIND_ANYWHERE );
 153             if( p_intf->p_sys->p_vout )
 154             {
 155                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
 156                                  MouseEvent, p_intf );
 157                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 158                                  MouseEvent, p_intf );
 159             }
 160         }
 161
 162         /* Wait a bit */
 163         msleep( INTF_IDLE_SLEEP );
 164     }
 165
 166     if( p_intf->p_sys->p_vout )
 167     {
 168         var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 169                          MouseEvent, p_intf );
 170         var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 171                          MouseEvent, p_intf );
 172         vlc_object_release( p_intf->p_sys->p_vout );
 173     }
 174 }
 175
 176 /*****************************************************************************
 177  * InitThread:
 178  *****************************************************************************/
 179 static int InitThread( intf_thread_t * p_intf )
 180 {
 181     if( !intf_ShouldDie( p_intf ) )
 182     {
 183         vlc_mutex_lock( &p_intf->change_lock );
 184
 185         p_intf->p_sys->b_triggered = false;
 186         p_intf->p_sys->b_button_pressed = false;
 187         p_intf->p_sys->i_threshold =
 188             config_GetInt( p_intf, "showintf-threshold" );
 189
 190         vlc_mutex_unlock( &p_intf->change_lock );
 191
 192         return 0;
 193     }
 194     else
 195     {
 196         return -1;
 197     }
 198 }
 199
 200 /*****************************************************************************
 201  * MouseEvent: callback for mouse events
 202  *****************************************************************************/
 203 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 204                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 205 {
 206     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(newval);
 207     vlc_value_t val;
 208
 209     int i_mouse_x, i_mouse_y;
 210     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 211
 212     /* Do nothing when the interface is already requested */
 213     if( p_intf->p_sys->b_triggered )
 214         return VLC_SUCCESS;
 215
 216     /* Nothing to do when not in fullscreen mode */
 217     var_Get( p_intf->p_sys->p_vout, "fullscreen", &val );
 218     if( !val.i_int )
 219         return VLC_SUCCESS;
 220
 221     vlc_mutex_lock( &p_intf->change_lock );
 222     if( !strcmp( psz_var, "mouse-moved" ) && !p_intf->p_sys->b_button_pressed )
 223     {
 224         var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
 225         i_mouse_x = val.i_int;
 226         var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
 227         i_mouse_y = val.i_int;
 228
 229         /* Very basic test, we even ignore the x value :) */
 230         if ( i_mouse_y < p_intf->p_sys->i_threshold )
 231         {
 232             msg_Dbg( p_intf, "interface showing requested" );
 233             p_intf->p_sys->b_triggered = true;
 234         }
 235     }
 236
 237     /* We keep track of the button state to avoid interferences with the
 238      * gestures plugin */
 239     if( !p_intf->p_sys->b_button_pressed &&
 240         !strcmp( psz_var, "mouse-button-down" ) )
 241     {
 242         p_intf->p_sys->b_button_pressed = true;
 243     }
 244     if( p_intf->p_sys->b_button_pressed &&
 245         !strcmp( psz_var, "mouse-button-down" ) )
 246     {
 247         p_intf->p_sys->b_button_pressed = false;
 248     }
 249
 250     vlc_mutex_unlock( &p_intf->change_lock );
 251
 252     return VLC_SUCCESS;
 253 }