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