modules/gui/qt4/variables.cpp

   1 /*****************************************************************************
   2  * variables.cpp : VLC variable class
   3  ****************************************************************************
   4  * Copyright (C) 2009 Rémi Denis-Courmont
   5  * Copyright (C) 2006 the VideoLAN team
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  20  *****************************************************************************/
  21
  22 #ifdef HAVE_CONFIG_H
  23 # include <config.h>
  24 #endif
  25
  26 #include "qt4.hpp"
  27 #include "variables.hpp"
  28
  29 QVLCVariable::QVLCVariable (vlc_object_t *obj, const char *varname, int type,
  30                             bool inherit)
  31     : object (obj), name (qfu(varname))
  32 {
  33     vlc_object_hold (object);
  34
  35     if (inherit)
  36         type |= VLC_VAR_DOINHERIT;
  37     var_Create (object, qtu(name), type);
  38     var_AddCallback (object, qtu(name), callback, this);
  39 }
  40
  41 QVLCVariable::~QVLCVariable (void)
  42 {
  43     var_DelCallback (object, qtu(name), callback, this);
  44     var_Destroy (object, qtu(name));
  45     vlc_object_release (object);
  46 }
  47
  48 int QVLCVariable::callback (vlc_object_t *object, const char *,
  49                             vlc_value_t old, vlc_value_t cur, void *data)
  50 {
  51     VLC_UNUSED(object);
  52
  53     QVLCVariable *self = static_cast<QVLCVariable *>(data);
  54
  55     self->trigger (self->object, old, cur);
  56     return VLC_SUCCESS;
  57 }
  58
  59
  60 QVLCPointer::QVLCPointer (vlc_object_t *obj, const char *varname, bool inherit)
  61     : QVLCVariable (obj, varname, VLC_VAR_ADDRESS, inherit)
  62 {
  63 }
  64
  65 void QVLCPointer::trigger (vlc_object_t *obj, vlc_value_t old, vlc_value_t cur)
  66 {
  67     emit pointerChanged (obj, old.p_address, cur.p_address);
  68     emit pointerChanged (obj, cur.p_address);
  69 }
  70
  71
  72 QVLCInteger::QVLCInteger (vlc_object_t *obj, const char *varname, bool inherit)
  73     : QVLCVariable (obj, varname, VLC_VAR_INTEGER, inherit)
  74 {
  75 }
  76
  77 void QVLCInteger::trigger (vlc_object_t *obj, vlc_value_t old, vlc_value_t cur)
  78 {
  79     emit integerChanged (obj, old.i_int, cur.i_int);
  80     emit integerChanged (obj, cur.i_int);
  81 }