modules/gui/qt4/components/playlist/vlc_model.hpp

   1 /*****************************************************************************
   2  * vlc_model.hpp : base for playlist and ml model
   3  ****************************************************************************
   4  * Copyright (C) 2010 the VideoLAN team and AUTHORS
   5  * $Id$
   6  *
   7  * Authors: Srikanth Raju <srikiraju#gmail#com>
   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 #ifndef _VLC_MODEL_H_
  25 #define _VLC_MODEL_H_
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include "qt4.hpp"
  32 #include "sorting.h"
  33
  34 #include <vlc_input.h>
  35
  36 #include <QModelIndex>
  37 #include <QPixmapCache>
  38 #include <QSize>
  39 #include <QAbstractItemModel>
  40
  41
  42 class VLCModel : public QAbstractItemModel
  43 {
  44     Q_OBJECT
  45 public:
  46     enum {
  47       IsCurrentRole = Qt::UserRole,
  48       IsLeafNodeRole,
  49       IsCurrentsParentNodeRole
  50     };
  51
  52     VLCModel( intf_thread_t *_p_intf, QObject *parent = 0 );
  53     virtual int getId( QModelIndex index ) const = 0;
  54     virtual QModelIndex currentIndex() const = 0;
  55     virtual bool popup( const QModelIndex & index,
  56             const QPoint &point, const QModelIndexList &list ) = 0;
  57     virtual void doDelete( QModelIndexList ) = 0;
  58     virtual ~VLCModel();
  59     static QString getMeta( const QModelIndex & index, int meta );
  60     static QPixmap getArtPixmap( const QModelIndex & index, const QSize & size );
  61
  62     static int columnToMeta( int _column )
  63     {
  64         int meta = 1;
  65         int column = 0;
  66
  67         while( column != _column && meta != COLUMN_END )
  68         {
  69             meta <<= 1;
  70             column++;
  71         }
  72
  73         return meta;
  74     }
  75
  76     static int columnFromMeta( int meta_col )
  77     {
  78         int meta = 1;
  79         int column = 0;
  80
  81         while( meta != meta_col && meta != COLUMN_END )
  82         {
  83             meta <<= 1;
  84             column++;
  85         }
  86
  87         return column;
  88     }
  89
  90 public slots:
  91     virtual void activateItem( const QModelIndex &index ) = 0;
  92
  93 protected:
  94     intf_thread_t *p_intf;
  95
  96 };
  97
  98
  99 #endif