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 #include <vlc/vlc.h>
  29 #include <vlc_interface.h>
  30 #include <vlc_vout.h>
  31 #include <vlc_playlist.h>
  32
  33 #ifdef HAVE_UNISTD_H
  34 #    include <unistd.h>
  35 #endif
  36
  37 /*****************************************************************************
  38  * intf_sys_t: description and status of interface
  39  *****************************************************************************/
  40 struct intf_sys_t
  41 {
  42     vlc_object_t * p_vout;
  43     vlc_bool_t     b_button_pressed;
  44     vlc_bool_t     b_triggered;
  45     int            i_threshold;
  46 };
  47
  48 /*****************************************************************************
  49  * Local prototypes.
  50  *****************************************************************************/
  51 int  E_(Open) ( vlc_object_t * );
  52 void E_(Close)( vlc_object_t * );
  53 static void RunIntf( intf_thread_t *p_intf );
  54 static int  InitThread( intf_thread_t *p_intf );
  55 static int  MouseEvent( vlc_object_t *, char const *,
  56                         vlc_value_t, vlc_value_t, void * );
  57
  58 /*****************************************************************************
  59  * Module descriptor
  60  *****************************************************************************/
  61 #define THRESHOLD_TEXT N_( "Threshold" )
  62 #define THRESHOLD_LONGTEXT N_( "Height of the zone triggering the interface." )
  63
  64 vlc_module_begin();
  65     set_shortname( "Showintf" );
  66     add_integer( "showintf-threshold", 10, NULL, THRESHOLD_TEXT, THRESHOLD_LONGTEXT, VLC_TRUE );
  67     set_description( _("Show interface with mouse") );
  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 interface" );
 114         return;
 115     }
 116
 117     /* Main loop */
 118     while( !intf_ShouldDie( p_intf ) )
 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 = pl_Yield( p_intf );
 126             var_SetBool( p_playlist, "intf-show", VLC_TRUE );
 127             vlc_object_release( p_playlist );
 128             p_intf->p_sys->b_triggered = VLC_FALSE;
 129         }
 130
 131         vlc_mutex_unlock( &p_intf->change_lock );
 132
 133
 134         /* Take care of the video output */
 135         if( p_intf->p_sys->p_vout && p_intf->p_sys->p_vout->b_die )
 136         {
 137             var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 138                              MouseEvent, p_intf );
 139             var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 140                              MouseEvent, p_intf );
 141             vlc_object_release( p_intf->p_sys->p_vout );
 142             p_intf->p_sys->p_vout = NULL;
 143         }
 144
 145         if( p_intf->p_sys->p_vout == NULL )
 146         {
 147             p_intf->p_sys->p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 148                                                      FIND_ANYWHERE );
 149             if( p_intf->p_sys->p_vout )
 150             {
 151                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
 152                                  MouseEvent, p_intf );
 153                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 154                                  MouseEvent, p_intf );
 155             }
 156         }
 157
 158         /* Wait a bit */
 159         msleep( INTF_IDLE_SLEEP );
 160     }
 161
 162     if( p_intf->p_sys->p_vout )
 163     {
 164         var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 165                          MouseEvent, p_intf );
 166         var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 167                          MouseEvent, p_intf );
 168         vlc_object_release( p_intf->p_sys->p_vout );
 169     }
 170 }
 171
 172 /*****************************************************************************
 173  * InitThread:
 174  *****************************************************************************/
 175 static int InitThread( intf_thread_t * p_intf )
 176 {
 177     if( !intf_ShouldDie( p_intf ) )
 178     {
 179         vlc_mutex_lock( &p_intf->change_lock );
 180
 181         p_intf->p_sys->b_triggered = VLC_FALSE;
 182         p_intf->p_sys->b_button_pressed = VLC_FALSE;
 183         p_intf->p_sys->i_threshold =
 184             config_GetInt( p_intf, "showintf-threshold" );
 185
 186         vlc_mutex_unlock( &p_intf->change_lock );
 187
 188         return 0;
 189     }
 190     else
 191     {
 192         return -1;
 193     }
 194 }
 195
 196 /*****************************************************************************
 197  * MouseEvent: callback for mouse events
 198  *****************************************************************************/
 199 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 200                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 201 {
 202     vlc_value_t val;
 203
 204     int i_mouse_x, i_mouse_y;
 205     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 206
 207     /* Do nothing when the interface is already requested */
 208     if( p_intf->p_sys->b_triggered )
 209         return VLC_SUCCESS;
 210
 211     /* Nothing to do when not in fullscreen mode */
 212     var_Get( p_intf->p_sys->p_vout, "fullscreen", &val );
 213     if( !val.i_int )
 214         return VLC_SUCCESS;
 215
 216     vlc_mutex_lock( &p_intf->change_lock );
 217     if( !strcmp( psz_var, "mouse-moved" ) && !p_intf->p_sys->b_button_pressed )
 218     {
 219         var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
 220         i_mouse_x = val.i_int;
 221         var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
 222         i_mouse_y = val.i_int;
 223
 224         /* Very basic test, we even ignore the x value :) */
 225         if ( i_mouse_y < p_intf->p_sys->i_threshold )
 226         {
 227             msg_Dbg( p_intf, "interface showing requested" );
 228             p_intf->p_sys->b_triggered = VLC_TRUE;
 229         }
 230     }
 231
 232     /* We keep track of the button state to avoid interferences with the
 233      * gestures plugin */
 234     if( !p_intf->p_sys->b_button_pressed &&
 235         !strcmp( psz_var, "mouse-button-down" ) )
 236     {
 237         p_intf->p_sys->b_button_pressed = VLC_TRUE;
 238     }
 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 = VLC_FALSE;
 243     }
 244
 245     vlc_mutex_unlock( &p_intf->change_lock );
 246
 247     return VLC_SUCCESS;
 248 }