modules/gui/qt4/components/epg/EPGView.cpp

   1 /*****************************************************************************
   2  * EPGView.cpp: EPGView
   3  ****************************************************************************
   4  * Copyright © 2009-2010 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Ludovic Fauvet <etix@l0cal.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 Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #include "EPGView.hpp"
  25 #include "EPGItem.hpp"
  26
  27 #include <QDateTime>
  28 #include <QMatrix>
  29 #include <QPaintEvent>
  30 #include <QScrollBar>
  31 #include <QtDebug>
  32 #include <QGraphicsTextItem>
  33
  34 EPGView::EPGView( QWidget *parent ) : QGraphicsView( parent )
  35 {
  36     setContentsMargins( 0, 0, 0, 0 );
  37     setFrameStyle( QFrame::Box );
  38     setAlignment( Qt::AlignLeft | Qt::AlignTop );
  39
  40     m_startTime = QDateTime::currentDateTime();
  41
  42     QGraphicsScene *EPGscene = new QGraphicsScene( this );
  43
  44     setScene( EPGscene );
  45 }
  46
  47 void EPGView::setScale( double scaleFactor )
  48 {
  49     m_scaleFactor = scaleFactor;
  50     QMatrix matrix;
  51     matrix.scale( scaleFactor, 1 );
  52     setMatrix( matrix );
  53 }
  54
  55 void EPGView::updateStartTime()
  56 {
  57     QList<QGraphicsItem*> itemList = items();
  58
  59     /* Set the new start time. */
  60     for ( int i = 0; i < itemList.count(); ++i )
  61     {
  62         EPGItem* item = qgraphicsitem_cast<EPGItem*>( itemList.at( i ) );
  63         if ( !item )
  64             continue;
  65         if( i == 0 )
  66             m_startTime = item->start();
  67         if ( item->start() < m_startTime )
  68             m_startTime = item->start();
  69     }
  70
  71     /* Update the position of all items. */
  72     for ( int i = 0; i < itemList.count(); ++i )
  73     {
  74         EPGItem* item = qgraphicsitem_cast<EPGItem*>( itemList.at( i ) );
  75         if ( !item )
  76             continue;
  77         item->updatePos();
  78     }
  79
  80     // Our start time may have changed.
  81     emit startTimeChanged( m_startTime );
  82 }
  83
  84 const QDateTime& EPGView::startTime()
  85 {
  86     return m_startTime;
  87 }
  88
  89 void EPGView::addEvent( EPGEvent* event )
  90 {
  91     if ( !m_channels.contains( event->channelName ) )
  92         m_channels.append( event->channelName );
  93
  94     EPGItem* item = new EPGItem( this );
  95     item->setChannel( m_channels.indexOf( event->channelName ) );
  96     item->setStart( event->start );
  97     item->setDuration( event->duration );
  98     item->setName( event->name );
  99     item->setDescription( event->description );
 100     item->setShortDescription( event->shortDescription );
 101     item->setCurrent( event->current );
 102
 103     event->item = item;
 104
 105     scene()->addItem( item );
 106 }
 107
 108 void EPGView::delEvent( EPGEvent* event )
 109 {
 110     if( event->item != NULL )
 111         scene()->removeItem( event->item );
 112     event->item = NULL;
 113 }
 114
 115 void EPGView::updateDuration()
 116 {
 117     QDateTime lastItem;
 118     QList<QGraphicsItem*> list = items();
 119
 120     for ( int i = 0; i < list.count(); ++i )
 121     {
 122         EPGItem* item = qgraphicsitem_cast<EPGItem*>( list.at( i ) );
 123         if ( !item ) continue;
 124         QDateTime itemEnd = item->start().addSecs( item->duration() );
 125
 126         if ( itemEnd > lastItem )
 127             lastItem = itemEnd;
 128     }
 129     m_duration = m_startTime.secsTo( lastItem );
 130     emit durationChanged( m_duration );
 131 }
 132
 133 QList<QString> EPGView::getChannelList()
 134 {
 135     return m_channels;
 136 }
 137
 138 void EPGView::eventFocused( EPGEvent *ev )
 139 {
 140     emit eventFocusedChanged( ev );
 141 }