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