src/playlist/PlaylistGraphicsView.cpp

   1 /***************************************************************************
   2  * copyright            : (C) 2007 Ian Monroe <ian@monroe.nu>              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License version 2        *
   6  *   as published by the Free Software Foundation.                         *
   7  ***************************************************************************/
   8
   9 #include "debug.h"
  10 #include "PlaylistModel.h"
  11 #include "PlaylistGraphicsItem.h"
  12 #include "PlaylistGraphicsView.h"
  13
  14 #include <QModelIndex>
  15 #include <QGraphicsScene>
  16
  17 PlaylistNS::GraphicsView::GraphicsView( QWidget* parent, PlaylistNS::Model* model )
  18     : QGraphicsView( parent )
  19     , m_model( model )
  20 {
  21 DEBUG_BLOCK
  22     setScene( new QGraphicsScene() );
  23     rowsInserted( QModelIndex(), 0, m_model->rowCount() - 1);
  24     connect( m_model, SIGNAL( modelReset() ), this, SLOT( modelReset() ) );
  25     connect( m_model, SIGNAL( rowsInserted( const QModelIndex&, int, int ) ), this, SLOT( rowsInserted( const QModelIndex &, int, int ) ) );
  26     connect( m_model, SIGNAL( rowsRemoved( const QModelIndex&, int, int ) ), this, SLOT( rowsRemoved( const QModelIndex&, int, int ) ) );
  27     show();
  28 }
  29
  30 void
  31 PlaylistNS::GraphicsView::rowsInserted( const QModelIndex& parent, int start, int end )
  32 {
  33     Q_UNUSED( parent );
  34     for( int i = start; i <= end; i++ )
  35     {
  36         PlaylistNS::GraphicsItem* item = new PlaylistNS::GraphicsItem();
  37         item->setPos( 0.0, PlaylistNS::GraphicsItem::height() * i );
  38         scene()->addItem( item );
  39         m_tracks.insert( i, item  );
  40     }
  41 }
  42
  43 void
  44 PlaylistNS::GraphicsView::rowsRemoved(const QModelIndex& parent, int start, int end )
  45 {
  46     Q_UNUSED( parent );
  47     for( int i = end; i >= start; i-- )
  48         delete m_tracks.takeAt( i );
  49 }
  50
  51 void
  52 PlaylistNS::GraphicsView::modelReset()
  53 {
  54     foreach( PlaylistNS::GraphicsItem* it, m_tracks )
  55     {
  56         delete it;
  57     }
  58     m_tracks.clear();
  59 }
  60
  61 #include "PlaylistGraphicsView.moc"