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