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     int canc = vlc_savecancel( );
 115     p_intf->p_sys->p_vout = NULL;
 116
 117     if( InitThread( p_intf ) < 0 )
 118     {
 119         msg_Err( p_intf, "cannot initialize interface" );
 120         return;
 121     }
 122
 123     /* Main loop */
 124     while( vlc_object_alive( p_intf ) )
 125     {
 126         vlc_mutex_lock( &p_intf->change_lock );
 127
 128         /* Notify the interfaces */
 129         if( p_intf->p_sys->b_triggered )
 130         {
 131             var_SetBool( p_intf->p_libvlc, "intf-show", true );
 132             p_intf->p_sys->b_triggered = false;
 133         }
 134
 135         vlc_mutex_unlock( &p_intf->change_lock );
 136
 137
 138         /* Take care of the video output */
 139         if( p_intf->p_sys->p_vout && !vlc_object_alive (p_intf->p_sys->p_vout) )
 140         {
 141             var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 142                              MouseEvent, p_intf );
 143             var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 144                              MouseEvent, p_intf );
 145             vlc_object_release( p_intf->p_sys->p_vout );
 146             p_intf->p_sys->p_vout = NULL;
 147         }
 148
 149         if( p_intf->p_sys->p_vout == NULL )
 150         {
 151             p_intf->p_sys->p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 152                                                      FIND_ANYWHERE );
 153             if( p_intf->p_sys->p_vout )
 154             {
 155                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
 156                                  MouseEvent, p_intf );
 157                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 158                                  MouseEvent, p_intf );
 159             }
 160         }
 161
 162         /* Wait a bit */
 163         msleep( INTF_IDLE_SLEEP );
 164     }
 165
 166     if( p_intf->p_sys->p_vout )
 167     {
 168         var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 169                          MouseEvent, p_intf );
 170         var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 171                          MouseEvent, p_intf );
 172         vlc_object_release( p_intf->p_sys->p_vout );
 173     }
 174     vlc_restorecancel( canc );
 175 }
 176
 177 /*****************************************************************************
 178  * InitThread:
 179  *****************************************************************************/
 180 static int InitThread( intf_thread_t * p_intf )
 181 {
 182     if( vlc_object_alive( p_intf ) )
 183     {
 184         vlc_mutex_lock( &p_intf->change_lock );
 185
 186         p_intf->p_sys->b_triggered = false;
 187         p_intf->p_sys->b_button_pressed = false;
 188         p_intf->p_sys->i_threshold =
 189             config_GetInt( p_intf, "showintf-threshold" );
 190
 191         vlc_mutex_unlock( &p_intf->change_lock );
 192
 193         return 0;
 194     }
 195     else
 196     {
 197         return -1;
 198     }
 199 }
 200
 201 /*****************************************************************************
 202  * MouseEvent: callback for mouse events
 203  *****************************************************************************/
 204 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 205                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 206 {
 207     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(newval);
 208     vlc_value_t val;
 209
 210     int i_mouse_x, i_mouse_y;
 211     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 212
 213     /* Do nothing when the interface is already requested */
 214     if( p_intf->p_sys->b_triggered )
 215         return VLC_SUCCESS;
 216
 217     /* Nothing to do when not in fullscreen mode */
 218     var_Get( p_intf->p_sys->p_vout, "fullscreen", &val );
 219     if( !val.i_int )
 220         return VLC_SUCCESS;
 221
 222     vlc_mutex_lock( &p_intf->change_lock );
 223     if( !strcmp( psz_var, "mouse-moved" ) && !p_intf->p_sys->b_button_pressed )
 224     {
 225         var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
 226         i_mouse_x = val.i_int;
 227         var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
 228         i_mouse_y = val.i_int;
 229
 230         /* Very basic test, we even ignore the x value :) */
 231         if ( i_mouse_y < p_intf->p_sys->i_threshold )
 232         {
 233             msg_Dbg( p_intf, "interface showing requested" );
 234             p_intf->p_sys->b_triggered = true;
 235         }
 236     }
 237
 238     /* We keep track of the button state to avoid interferences with the
 239      * gestures plugin */
 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 = true;
 244     }
 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 = false;
 249     }
 250
 251     vlc_mutex_unlock( &p_intf->change_lock );
 252
 253     return VLC_SUCCESS;
 254 }