Merge branch 'master' into tweetsip

src/libtomahawk/playlist/dynamic/DynamicModel.cpp

@@ -110,6 +110,8 @@ DynamicModel::trackResolved()
         emit collapseFromTo( m_lastResolvedRow, m_currentAttempts );
     }
     m_currentAttempts = 0;
+
+    emit checkForOverflow();
 }
 
 void 

src/libtomahawk/playlist/dynamic/DynamicModel.h

@@ -43,8 +43,11 @@ public:
     void loadPlaylist( const dynplaylist_ptr& playlist );
     
     virtual void removeIndex( const QModelIndex& index, bool moreToCome = false );
+    
+    bool searchingForNext() const { return m_searchingForNext; }
 signals:
     void collapseFromTo( int startRow, int num );
+    void checkForOverflow();
 
     void trackGenerationFailure( const QString& msg );
     
@@ -60,6 +63,7 @@ private:
     bool m_startOnResolved;
     bool m_onDemandRunning;
     bool m_changeOnNext;
+    bool m_searchingForNext;
     int m_currentAttempts;
     int m_lastResolvedRow;
 };

src/libtomahawk/playlist/dynamic/DynamicView.cpp

@@ -37,6 +37,7 @@ using namespace Tomahawk;
 DynamicView::DynamicView( QWidget* parent )
         : PlaylistView( parent )
         , m_onDemand( false )
+        , m_checkOnCollapse( false )
 {
     m_fadeOutAnim.setDuration( FADE_LENGTH );
     m_fadeOutAnim.setCurveShape( QTimeLine::LinearCurve );
@@ -51,6 +52,7 @@ DynamicView::DynamicView( QWidget* parent )
     
     
     connect( &m_fadeOutAnim, SIGNAL( frameChanged( int ) ), viewport(), SLOT( update() ) );
+    connect( &m_fadeOutAnim, SIGNAL( finished() ), this, SLOT( animFinished() ) );
 }
 
 DynamicView::~DynamicView()
@@ -61,15 +63,22 @@ DynamicView::~DynamicView()
 void 
 DynamicView::setModel( DynamicModel* model)
 {
+    m_model = model;
     PlaylistView::setModel( model );
     
     connect( model, SIGNAL( trackCountChanged( unsigned int ) ), SLOT( onTrackCountChanged( unsigned int ) ) );
+    connect( model, SIGNAL( checkForOverflow() ), this, SLOT( checkForOverflow() ) );
 }
 
 void
 DynamicView::setOnDemand( bool onDemand )
 {
     m_onDemand = onDemand;
+    
+    if( m_onDemand )
+        setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
+    else
+        setVerticalScrollBarPolicy( Qt::ScrollBarAsNeeded );
 }
 
 void 
@@ -116,24 +125,54 @@ DynamicView::onTrackCountChanged( unsigned int tracks )
     }
     else
         overlay()->hide();
-    
-    // make sure we can see all our tracks
-    scrollTo( proxyModel()->index( proxyModel()->rowCount() - 1, 0, QModelIndex() ), EnsureVisible );
 }
 
 void
-DynamicView::collapseEntries( int startRow, int num )
+DynamicView::checkForOverflow()
 {
+    if( !m_onDemand || proxyModel()->rowCount( QModelIndex() ) == 0 )
+        return;
+
+    if( m_fadeOutAnim.state() == QTimeLine::Running )
+        m_checkOnCollapse = true;
+
+    /// We don't want stations to grow forever, because we don't want the view to have to scroll
+    /// So if there are too many tracks, we remove some that have already been played
+    /// Our threshold is 4 rows to the end. That's when we collapse.
+    QModelIndex last = proxyModel()->index( proxyModel()->rowCount( QModelIndex() ) - 1, 0, QModelIndex() );
+    QRect lastRect = visualRect( last );
+    qDebug() << "Checking viewport height of" << viewport()->height() << "and last track bottom:" << lastRect.bottomLeft().y() << "under threshold" << 4 * lastRect.height();
+    if( viewport()->height() - lastRect.bottomLeft().y() <= ( 4 * lastRect.height() ) ) {
+        qDebug() << "Deciding to remove some tracks from this station";
+
+        // figure out how many to remove. lets get rid of 1/3rd of the backlog, visually.
+        int toRemove = ( viewport()->height() / 3 ) / lastRect.height();
+        qDebug() << "Decided to remove" << toRemove << "rows!";
+        collapseEntries( 0, toRemove, proxyModel()->rowCount( QModelIndex() ) - toRemove );
+    }
+}
+
+void 
+DynamicView::collapseEntries( int startRow, int num, int numToKeep )
+{
+    qDebug() << "BEGINNING TO COLLAPSE FROM" << startRow << num << numToKeep;
     if( m_fadeOutAnim.state() == QTimeLine::Running )
         qDebug() << "COLLAPSING TWICE!";
-    // TODO if we are scrolled, we can't animate this way. 
+
-    //      we have to animate the top coming down, which i haven't implemented yet..
+    /// Two options: Either we are overflowing our view, or we're not. If we are, it's because the search for a playable track
-    if( verticalScrollBar()->sliderPosition() == 0 ) {
+    /// went past the limit of the view. Just fade out from the beginning to the end in that case. otherwise, animate a slide
+    bool justFade = false;
+    int realNum = num;
+    QModelIndex last = indexAt( QPoint( 3, viewport()->height() - 3 ) );
+    if( last.isValid() && last.row() < startRow + num ) {
+        justFade = true;
+        realNum = last.row();
+    }
      // we capture the image of the rows we're going to collapse
     // then we capture the image of the target row we're going to animate downwards
     // then we fade the first image out while sliding the second image up.
     QModelIndex topLeft = proxyModel()->index( startRow, 0, QModelIndex() );
-        QModelIndex bottomRight = proxyModel()->index( startRow + num - 1, proxyModel()->columnCount( QModelIndex() ) - 1, QModelIndex() );
+    QModelIndex bottomRight = proxyModel()->index( startRow + realNum - 1, proxyModel()->columnCount( QModelIndex() ) - 1, QModelIndex() );
     QItemSelection sel( topLeft, bottomRight );
     QRect fadingRect = visualRegionForSelection( sel ).boundingRect();
     QRect fadingRectViewport = fadingRect; // all values that we use in paintEvent() have to be in viewport coords
@@ -142,13 +181,20 @@ DynamicView::collapseEntries( int startRow, int num )
     m_fadingIndexes = QPixmap::grabWidget( this, fadingRect ); // but all values we use to grab the widgetr have to be in scrollarea coords :(
     m_fadingPointAnchor = QPoint( 0, fadingRectViewport.topLeft().y() );
     
+    m_fadeOutAnim.start();
+    
     qDebug() << "Grabbed fading indexes from rect:" << fadingRect << m_fadingIndexes.size();
     
-        topLeft = proxyModel()->index( startRow + num, 0, QModelIndex() );
+    if( !justFade ) {
-        bottomRight = proxyModel()->index( startRow + num, proxyModel()->columnCount( QModelIndex() ) - 1, QModelIndex() );
+    /// sanity checks. make sure we have all the rows we need
+        int firstSlider = startRow + realNum;
+        Q_ASSERT( firstSlider + numToKeep - 1 <= proxyModel()->rowCount() );
+     
+        topLeft = proxyModel()->index( startRow + realNum, 0, QModelIndex() );
+        bottomRight = proxyModel()->index( startRow + realNum + numToKeep - 1, proxyModel()->columnCount( QModelIndex() ) - 1, QModelIndex() );
         QRect slidingRect = visualRegionForSelection( QItemSelection( topLeft, bottomRight ) ).boundingRect();
         QRect slidingRectViewport = slidingRect;
-        // map internal view cord to external qscrollarea
+        // map internal view coord to external qscrollarea
         slidingRect.moveTo( viewport()->mapTo( this, slidingRect.topLeft() ) );
     
         m_slidingIndex = QPixmap::grabWidget( this, slidingRect );
@@ -161,9 +207,9 @@ DynamicView::collapseEntries( int startRow, int num )
         m_slideAnim.setDuration( SLIDE_LENGTH + frameRange * LONG_MULT );
         m_slideAnim.setFrameRange( slidingRectViewport.topLeft().y(), fadingRectViewport.topLeft().y() );
         
-        m_fadeOutAnim.start();
         QTimer::singleShot( SLIDE_OFFSET, &m_slideAnim, SLOT( start() ) );
     }
+    
     // delete the actual indices
     QModelIndexList todel;
     for( int i = 0; i < num; i++ ) {
@@ -174,6 +220,14 @@ DynamicView::collapseEntries( int startRow, int num )
     proxyModel()->removeIndexes( todel );
 }
 
+void
+DynamicView::animFinished()
+{
+    if( m_checkOnCollapse )
+        checkForOverflow();
+    m_checkOnCollapse = false;
+}
+
 void 
 DynamicView::paintEvent( QPaintEvent* event )
 {

src/libtomahawk/playlist/dynamic/DynamicView.h

@@ -21,6 +21,7 @@
 #include <QTimer>
 #include <QPropertyAnimation>
 #include <QTimeLine>
+#include <QMutex>
 
 class PlaylistModel;
 class TrackModel;
@@ -51,17 +52,22 @@ public slots:
     // collapse and animate the transition
     // there MUST be a row *after* startRow + num. that is, you can't collapse
     // entries unless there is at least one entry after the last collapsed row
-    void collapseEntries( int startRow, int num );
+    // optionally you can specify how  many rows are past the block of collapsed rows
+    void collapseEntries( int startRow, int num, int numToKeep = 1 );
     
 private slots:
     void onTrackCountChanged( unsigned int );
+    void checkForOverflow();
+    void animFinished();
 
 private:
+    DynamicModel* m_model;
     QString m_title;
     QString m_body;
     
     bool m_onDemand;
     bool m_readOnly;
+    bool m_checkOnCollapse;
 
     // for collapsing animation
     QPoint m_fadingPointAnchor;

src/libtomahawk/playlist/dynamic/widgets/DynamicWidget.cpp

@@ -64,7 +64,7 @@ DynamicWidget::DynamicWidget( const Tomahawk::dynplaylist_ptr& playlist, QWidget
     m_view->setContentsMargins( 0, 0, 0, 0 );
     m_layout->addWidget( m_view, 1 );
     
-    connect( m_model, SIGNAL( collapseFromTo( int, int ) ), m_view, SLOT( collapseEntries( int, int ) ), Qt::QueuedConnection );
+    connect( m_model, SIGNAL( collapseFromTo( int, int ) ), m_view, SLOT( collapseEntries( int, int ) ) );
     connect( m_model, SIGNAL( trackGenerationFailure( QString ) ), m_view, SLOT( showMessage( QString ) ) );