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  InitThread( intf_thread_t *p_intf );
  61 static int  MouseEvent( vlc_object_t *, char const *,
  62                         vlc_value_t, vlc_value_t, void * );
  63
  64 /*****************************************************************************
  65  * Module descriptor
  66  *****************************************************************************/
  67 #define THRESHOLD_TEXT N_( "Threshold" )
  68 #define THRESHOLD_LONGTEXT N_( "Height of the zone triggering the interface." )
  69
  70 vlc_module_begin ()
  71     set_shortname( "Showintf" )
  72     add_integer( "showintf-threshold", 10, NULL, THRESHOLD_TEXT, THRESHOLD_LONGTEXT, true )
  73     set_description( N_("Show interface with mouse") )
  74
  75     set_capability( "interface", 0 )
  76     set_callbacks( Open, Close )
  77 vlc_module_end ()
  78
  79 /*****************************************************************************
  80  * Open: initialize interface
  81  *****************************************************************************/
  82 int Open( vlc_object_t *p_this )
  83 {
  84     intf_thread_t *p_intf = (intf_thread_t *)p_this;
  85
  86     /* Allocate instance and initialize some members */
  87     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
  88     if( p_intf->p_sys == NULL )
  89     {
  90         return( 1 );
  91     };
  92
  93     vlc_mutex_init( &p_intf->p_sys->lock );
  94     p_intf->pf_run = RunIntf;
  95
  96     return( 0 );
  97 }
  98
  99 /*****************************************************************************
 100  * Close: destroy interface
 101  *****************************************************************************/
 102 void Close( vlc_object_t *p_this )
 103 {
 104     intf_thread_t *p_intf = (intf_thread_t *)p_this;
 105
 106     /* Destroy structure */
 107     vlc_mutex_destroy( &p_intf->p_sys->lock );
 108     free( p_intf->p_sys );
 109 }
 110
 111
 112 /*****************************************************************************
 113  * RunIntf: main loop
 114  *****************************************************************************/
 115 static void RunIntf( intf_thread_t *p_intf )
 116 {
 117     int canc = vlc_savecancel( );
 118     p_intf->p_sys->p_vout = NULL;
 119
 120     if( InitThread( p_intf ) < 0 )
 121     {
 122         msg_Err( p_intf, "cannot initialize interface" );
 123         return;
 124     }
 125
 126     /* Main loop */
 127     while( vlc_object_alive( p_intf ) )
 128     {
 129         vlc_mutex_lock( &p_intf->p_sys->lock );
 130
 131         /* Notify the interfaces */
 132         if( p_intf->p_sys->b_triggered )
 133         {
 134             var_SetBool( p_intf->p_libvlc, "intf-show", true );
 135             p_intf->p_sys->b_triggered = false;
 136         }
 137
 138         vlc_mutex_unlock( &p_intf->p_sys->lock );
 139
 140
 141         /* Take care of the video output */
 142         if( p_intf->p_sys->p_vout && !vlc_object_alive (p_intf->p_sys->p_vout) )
 143         {
 144             var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 145                              MouseEvent, p_intf );
 146             var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 147                              MouseEvent, p_intf );
 148             vlc_object_release( p_intf->p_sys->p_vout );
 149             p_intf->p_sys->p_vout = NULL;
 150         }
 151
 152         if( p_intf->p_sys->p_vout == NULL )
 153         {
 154             p_intf->p_sys->p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 155                                                      FIND_ANYWHERE );
 156             if( p_intf->p_sys->p_vout )
 157             {
 158                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
 159                                  MouseEvent, p_intf );
 160                 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 161                                  MouseEvent, p_intf );
 162             }
 163         }
 164
 165         /* Wait a bit */
 166         msleep( INTF_IDLE_SLEEP );
 167     }
 168
 169     if( p_intf->p_sys->p_vout )
 170     {
 171         var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
 172                          MouseEvent, p_intf );
 173         var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
 174                          MouseEvent, p_intf );
 175         vlc_object_release( p_intf->p_sys->p_vout );
 176     }
 177     vlc_restorecancel( canc );
 178 }
 179
 180 /*****************************************************************************
 181  * InitThread:
 182  *****************************************************************************/
 183 static int InitThread( intf_thread_t * p_intf )
 184 {
 185     if( vlc_object_alive( p_intf ) )
 186     {
 187         vlc_mutex_lock( &p_intf->p_sys->lock );
 188
 189         p_intf->p_sys->b_triggered = false;
 190         p_intf->p_sys->b_button_pressed = false;
 191         p_intf->p_sys->i_threshold =
 192             config_GetInt( p_intf, "showintf-threshold" );
 193
 194         vlc_mutex_unlock( &p_intf->p_sys->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_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(newval);
 211     vlc_value_t val;
 212
 213     int i_mouse_x, i_mouse_y;
 214     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 215
 216     /* Do nothing when the interface is already requested */
 217     if( p_intf->p_sys->b_triggered )
 218         return VLC_SUCCESS;
 219
 220     /* Nothing to do when not in fullscreen mode */
 221     var_Get( p_intf->p_sys->p_vout, "fullscreen", &val );
 222     if( !val.i_int )
 223         return VLC_SUCCESS;
 224
 225     vlc_mutex_lock( &p_intf->p_sys->lock );
 226     if( !strcmp( psz_var, "mouse-moved" ) && !p_intf->p_sys->b_button_pressed )
 227     {
 228         var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
 229         i_mouse_x = val.i_int;
 230         var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
 231         i_mouse_y = val.i_int;
 232
 233         /* Very basic test, we even ignore the x value :) */
 234         if ( i_mouse_y < p_intf->p_sys->i_threshold )
 235         {
 236             msg_Dbg( p_intf, "interface showing requested" );
 237             p_intf->p_sys->b_triggered = true;
 238         }
 239     }
 240
 241     /* We keep track of the button state to avoid interferences with the
 242      * gestures plugin */
 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 = true;
 247     }
 248     if( p_intf->p_sys->b_button_pressed &&
 249         !strcmp( psz_var, "mouse-button-down" ) )
 250     {
 251         p_intf->p_sys->b_button_pressed = false;
 252     }
 253
 254     vlc_mutex_unlock( &p_intf->p_sys->lock );
 255
 256     return VLC_SUCCESS;
 257 }