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 VideoLAN
   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., 59 Temple Place - Suite 330, Boston, MA  02111, 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     set_category( CAT_INTERFACE );
  68     set_subcategory( SUBCAT_INTERFACE_CONTROL );
  69     add_integer( "showintf-threshold", 10, NULL, THRESHOLD_TEXT, THRESHOLD_LONGTEXT, VLC_TRUE );
  70     set_description( _("Interface showing control interface") );
  71
  72     set_capability( "interface", 0 );
  73     set_callbacks( E_(Open), E_(Close) );
  74 vlc_module_end();
  75
  76 /*****************************************************************************
  77  * Open: initialize interface
  78  *****************************************************************************/
  79 int E_(Open)( vlc_object_t *p_this )
  80 {
  81     intf_thread_t *p_intf = (intf_thread_t *)p_this;
  82
  83     /* Allocate instance and initialize some members */
  84     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
  85     if( p_intf->p_sys == NULL )
  86     {
  87         return( 1 );
  88     };
  89
  90     p_intf->pf_run = RunIntf;
  91
  92     return( 0 );
  93 }
  94
  95 /*****************************************************************************
  96  * Close: destroy interface
  97  *****************************************************************************/
  98 void E_(Close)( vlc_object_t *p_this )
  99 {
 100     intf_thread_t *p_intf = (intf_thread_t *)p_this;
 101
 102     /* Destroy structure */
 103     free( p_intf->p_sys );
 104 }
 105
 106
 107 /*****************************************************************************
 108  * RunIntf: main loop
 109  *****************************************************************************/
 110 static void RunIntf( intf_thread_t *p_intf )
 111 {
 112     p_intf->p_sys->p_vout = NULL;
 113
 114     if( InitThread( p_intf ) < 0 )
 115     {
 116         msg_Err( p_intf, "cannot initialize intf" );
 117         return;
 118     }
 119
 120     /* Main loop */
 121     while( !p_intf->b_die )
 122     {
 123         vlc_mutex_lock( &p_intf->change_lock );
 124
 125         /* Notify the interfaces */
 126         if( p_intf->p_sys->b_triggered )
 127         {
 128             playlist_t *p_playlist =
 129                 (playlist_t *)vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 130                                                FIND_ANYWHERE );
 131
 132             if( p_playlist != NULL )
 133             {
 134                 vlc_value_t val;
 135                 val.b_bool = VLC_TRUE;
 136                 var_Set( p_playlist, "intf-show", val );
 137                 vlc_object_release( p_playlist );
 138             }
 139             p_intf->p_sys->b_triggered = VLC_FALSE;
 140         }
 141
 142         vlc_mutex_unlock( &p_intf->change_lock );
 143
 144
 145         /* Take care of the video output */
 146         if( p_intf->p_sys->p_vout && p_intf->p_sys->p_vout->b_die )
 147         {
 148             var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 149                              MouseEvent, p_intf );
 150             var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 151                              MouseEvent, p_intf );
 152             vlc_object_release( p_intf->p_sys->p_vout );
 153             p_intf->p_sys->p_vout = NULL;
 154         }
 155
 156         if( p_intf->p_sys->p_vout == NULL )
 157         {
 158             p_intf->p_sys->p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 159                                                      FIND_ANYWHERE );
 160             if( p_intf->p_sys->p_vout )
 161             {
 162                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
 163                                  MouseEvent, p_intf );
 164                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 165                                  MouseEvent, p_intf );
 166             }
 167         }
 168
 169         /* Wait a bit */
 170         msleep( INTF_IDLE_SLEEP );
 171     }
 172
 173     if( p_intf->p_sys->p_vout )
 174     {
 175         var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 176                          MouseEvent, p_intf );
 177         var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 178                          MouseEvent, p_intf );
 179         vlc_object_release( p_intf->p_sys->p_vout );
 180     }
 181 }
 182
 183 /*****************************************************************************
 184  * InitThread:
 185  *****************************************************************************/
 186 static int InitThread( intf_thread_t * p_intf )
 187 {
 188     if( !p_intf->b_die )
 189     {
 190         vlc_mutex_lock( &p_intf->change_lock );
 191
 192         p_intf->p_sys->b_triggered = VLC_FALSE;
 193         p_intf->p_sys->b_button_pressed = VLC_FALSE;
 194         p_intf->p_sys->i_threshold =
 195             config_GetInt( p_intf, "showintf-threshold" );
 196
 197         vlc_mutex_unlock( &p_intf->change_lock );
 198
 199         return 0;
 200     }
 201     else
 202     {
 203         return -1;
 204     }
 205 }
 206
 207 /*****************************************************************************
 208  * MouseEvent: callback for mouse events
 209  *****************************************************************************/
 210 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 211                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 212 {
 213     vlc_value_t val;
 214
 215     int i_mouse_x, i_mouse_y;
 216     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 217
 218     /* Do nothing when the interface is already requested */
 219     if( p_intf->p_sys->b_triggered )
 220         return VLC_SUCCESS;
 221
 222     /* Nothing to do when not in fullscreen mode */
 223     var_Get( p_intf->p_sys->p_vout, "fullscreen", &val );
 224     if( !val.i_int )
 225         return VLC_SUCCESS;
 226
 227     vlc_mutex_lock( &p_intf->change_lock );
 228     if( !strcmp( psz_var, "mouse-moved" ) && !p_intf->p_sys->b_button_pressed )
 229     {
 230         var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
 231         i_mouse_x = val.i_int;
 232         var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
 233         i_mouse_y = val.i_int;
 234
 235         /* Very basic test, we even ignore the x value :) */
 236         if ( i_mouse_y < p_intf->p_sys->i_threshold )
 237         {
 238             msg_Dbg( p_intf, "interface showing requested" );
 239             p_intf->p_sys->b_triggered = VLC_TRUE;
 240         }
 241     }
 242
 243     /* We keep track of the button state to avoid interferences with the
 244      * gestures plugin */
 245     if( !p_intf->p_sys->b_button_pressed &&
 246         !strcmp( psz_var, "mouse-button-down" ) )
 247     {
 248         p_intf->p_sys->b_button_pressed = VLC_TRUE;
 249     }
 250     if( p_intf->p_sys->b_button_pressed &&
 251         !strcmp( psz_var, "mouse-button-down" ) )
 252     {
 253         p_intf->p_sys->b_button_pressed = VLC_FALSE;
 254     }
 255
 256     vlc_mutex_unlock( &p_intf->change_lock );
 257
 258     return VLC_SUCCESS;
 259 }