TagBrowserWidget::TagBrowserWidget(PlaydarConnection* playdar, QWidget* parent) :
QWidget(parent),
m_playdar(playdar)
{
m_tagCloudModel = new PlaydarTagCloudModel(playdar);
m_filter = new RelevanceFilter();
m_filter->setSourceModel(m_tagCloudModel);
QVBoxLayout* vlayout = new QVBoxLayout(this);
m_history = new HistoryWidget();
m_history->newItem("all");
connect(m_history, SIGNAL(clicked(int, QString)),
SLOT(onHistoryClicked(int, QString)));
QPushButton* button = new QPushButton("filter irrelevant tags");
connect(button, SIGNAL(clicked()), SLOT(onFilterClicked()));
vlayout->addWidget(button);
vlayout->addWidget(m_history);
QWidget* w = new QWidget(this);
m_view = new TagCloudView(w);
m_view->setModel(m_filter);
connect(m_tagCloudModel, SIGNAL(tagItem(BoffinTagItem)), m_view, SLOT(onTag(BoffinTagItem)));
connect(m_tagCloudModel, SIGNAL(fetchedTags()), m_view, SLOT(onFetchedTags()));
m_view->setItemDelegate(new TagDelegate);
connect(m_view->selectionModel(),
SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
SLOT(onSelectionChanged(QItemSelection, QItemSelection)));
vlayout->addWidget(m_view);
// not interested in the playlist widget right now:
// m_playlistModel = new PlaylistModel(this);
// m_playlistWidget = new PlaylistWidget(m_playdar, this);
// m_playlistWidget->setModel(m_playlistModel);
// vlayout->addWidget(m_playlistWidget);
m_tagCloudModel->startGetTags();
this->setLayout(vlayout);
}
void
PlaydarTagCloudModel::onTag(BoffinTagItem tag)
{
if( m_loadingTimer )
m_loadingTimer->stop();
// check if the host is being filtered.
if (!m_hostFilter.contains(tag.m_host)) {
m_hosts.insert(tag.m_host);
if( int i = m_tagListBuffer.indexOf( tag ) >= 0 )
{
// merge into existing tag
m_tagListBuffer[ i ].m_weight += tag.m_weight;
m_tagListBuffer[ i ].m_count += tag.m_count;
m_tagListBuffer[ i ].m_logCount = log( (float) m_tagListBuffer[i].m_count );
m_maxWeight = qMax( m_tagListBuffer[i].m_weight, m_maxWeight);
m_maxLogCount = qMax( m_tagListBuffer[i].m_logCount, m_maxLogCount);
}
else
{
// new tag
tag.m_logCount = log( (float) tag.m_count );
m_tagListBuffer << tag;
m_maxTrackCount = qMax( tag.m_count, m_maxTrackCount );
m_maxWeight = qMax( tag.m_weight, m_maxWeight );
m_maxLogCount = qMax( m_maxLogCount, tag.m_logCount );
m_minLogCount = qMin( m_minLogCount, tag.m_logCount );
}
}
// fire onFetchedTags after 1 second of idle-ness
if( !m_loadingTimer )
{
m_loadingTimer = new QTimer();
m_loadingTimer->setSingleShot( true );
connect( m_loadingTimer, SIGNAL( timeout()), SLOT(onFetchedTags()));
}
m_loadingTimer->start( 1000 );
}
