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_mutex_t   lock;
  48     vlc_object_t *p_vout;
  49     bool          b_button_pressed;
  50     bool          b_triggered;
  51     int           i_threshold;
  52 };
  53
  54 /*****************************************************************************
  55  * Local prototypes.
  56  *****************************************************************************/
  57 int  Open ( vlc_object_t * );
  58 void Close( vlc_object_t * );
  59 static void RunIntf( 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     intf_sys_t *p_sys = p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
  87     if( p_sys == NULL )
  88         return VLC_ENOMEM;
  89
  90     vlc_mutex_init( &p_sys->lock );
  91     p_sys->p_vout = NULL;
  92     p_sys->b_button_pressed = false;
  93     p_sys->b_triggered = false;
  94     p_sys->i_threshold = config_GetInt( p_intf, "showintf-threshold" );
  95
  96     p_intf->pf_run = RunIntf;
  97
  98     return VLC_SUCCESS;
  99 }
 100
 101 /*****************************************************************************
 102  * Close: destroy interface
 103  *****************************************************************************/
 104 void Close( vlc_object_t *p_this )
 105 {
 106     intf_thread_t *p_intf = (intf_thread_t *)p_this;
 107
 108     /* Destroy structure */
 109     vlc_mutex_destroy( &p_intf->p_sys->lock );
 110     free( p_intf->p_sys );
 111 }
 112
 113
 114 /*****************************************************************************
 115  * RunIntf: main loop
 116  *****************************************************************************/
 117 static void RunIntf( intf_thread_t *p_intf )
 118 {
 119     int canc = vlc_savecancel( );
 120
 121     /* Main loop */
 122     while( vlc_object_alive( p_intf ) )
 123     {
 124         vlc_mutex_lock( &p_intf->p_sys->lock );
 125
 126         /* Notify the interfaces */
 127         if( p_intf->p_sys->b_triggered )
 128         {
 129             var_SetBool( p_intf->p_libvlc, "intf-show", true );
 130             p_intf->p_sys->b_triggered = false;
 131         }
 132
 133         vlc_mutex_unlock( &p_intf->p_sys->lock );
 134
 135
 136         /* Take care of the video output */
 137         if( p_intf->p_sys->p_vout && !vlc_object_alive (p_intf->p_sys->p_vout) )
 138         {
 139             var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 140                              MouseEvent, p_intf );
 141             var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 142                              MouseEvent, p_intf );
 143             vlc_object_release( p_intf->p_sys->p_vout );
 144             p_intf->p_sys->p_vout = NULL;
 145         }
 146
 147         if( p_intf->p_sys->p_vout == NULL )
 148         {
 149             p_intf->p_sys->p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 150                                                      FIND_ANYWHERE );
 151             if( p_intf->p_sys->p_vout )
 152             {
 153                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
 154                                  MouseEvent, p_intf );
 155                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 156                                  MouseEvent, p_intf );
 157             }
 158         }
 159
 160         /* Wait a bit */
 161         msleep( INTF_IDLE_SLEEP );
 162     }
 163
 164     if( p_intf->p_sys->p_vout )
 165     {
 166         var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 167                          MouseEvent, p_intf );
 168         var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 169                          MouseEvent, p_intf );
 170         vlc_object_release( p_intf->p_sys->p_vout );
 171     }
 172     vlc_restorecancel( canc );
 173 }
 174
 175 /*****************************************************************************
 176  * MouseEvent: callback for mouse events
 177  *****************************************************************************/
 178 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 179                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 180 {
 181     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(newval);
 182
 183     int i_mouse_x, i_mouse_y;
 184     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 185
 186     /* Do nothing when the interface is already requested */
 187     if( p_intf->p_sys->b_triggered )
 188         return VLC_SUCCESS;
 189
 190     /* Nothing to do when not in fullscreen mode */
 191     if( !var_GetBool( p_intf->p_sys->p_vout, "fullscreen" ) )
 192         return VLC_SUCCESS;
 193
 194     vlc_mutex_lock( &p_intf->p_sys->lock );
 195     if( !strcmp( psz_var, "mouse-moved" ) && !p_intf->p_sys->b_button_pressed )
 196     {
 197         i_mouse_x = var_GetInteger( p_intf->p_sys->p_vout, "mouse-x" );
 198         i_mouse_y = var_GetInteger( p_intf->p_sys->p_vout, "mouse-y" );
 199
 200         /* Very basic test, we even ignore the x value :) */
 201         if ( i_mouse_y < p_intf->p_sys->i_threshold )
 202         {
 203             msg_Dbg( p_intf, "interface showing requested" );
 204             p_intf->p_sys->b_triggered = true;
 205         }
 206     }
 207
 208     /* We keep track of the button state to avoid interferences with the
 209      * gestures plugin */
 210     if( !p_intf->p_sys->b_button_pressed &&
 211         !strcmp( psz_var, "mouse-button-down" ) )
 212     {
 213         p_intf->p_sys->b_button_pressed = true;
 214     }
 215     if( p_intf->p_sys->b_button_pressed &&
 216         !strcmp( psz_var, "mouse-button-down" ) )
 217     {
 218         p_intf->p_sys->b_button_pressed = false;
 219     }
 220
 221     vlc_mutex_unlock( &p_intf->p_sys->lock );
 222
 223     return VLC_SUCCESS;
 224 }