add some animation

src/libtomahawk/playlist/dynamic/DynamicModel.cpp

@@ -26,8 +26,10 @@ DynamicModel::DynamicModel( QObject* parent )
     , m_startOnResolved( false )
     , m_onDemandRunning( false )
     , m_currentAttempts( 0 )
+    , m_lastResolvedRow( 0 )
 {
-
+    
+    connect( AudioEngine::instance(), SIGNAL( loading( Tomahawk::result_ptr ) ), this, SLOT( newTrackLoading() ) );
 }
 
 DynamicModel::~DynamicModel()
@@ -38,6 +40,9 @@ DynamicModel::~DynamicModel()
 void 
 DynamicModel::loadPlaylist( const Tomahawk::dynplaylist_ptr& playlist )
 {
+    if( !m_playlist.isNull() ) {
+        disconnect( m_playlist->generator().data(), SIGNAL( nextTrackGenerated( Tomahawk::query_ptr ) ), this, SLOT( newTrackGenerated( Tomahawk::query_ptr ) ) );
+    }
     m_playlist = playlist;
     
     
@@ -50,7 +55,6 @@ DynamicModel::startOnDemand()
 {
     m_playlist->generator()->startOnDemand();
     
-    connect( AudioEngine::instance(), SIGNAL( loading( Tomahawk::result_ptr ) ), this, SLOT( newTrackLoading() ) );
     m_onDemandRunning = true;
     m_startOnResolved = true;
 }
@@ -79,21 +83,31 @@ DynamicModel::stopOnDemand()
 void 
 DynamicModel::trackResolved()
 {   
-    m_currentAttempts = 0;
-    
+    Query* q = qobject_cast<Query*>(sender());
+    qDebug() << "Got successful resolved track:" << q->track() << q->artist() << m_lastResolvedRow << m_currentAttempts;
     if( m_startOnResolved ) { // on first start
         m_startOnResolved = false;
         AudioEngine::instance()->play();
     }
+    
+    if( m_currentAttempts > 0 ) {
+        qDebug() << "EMITTING AN ASK FOR COLLAPSE:" << m_lastResolvedRow << m_currentAttempts;
+        emit collapseFromTo( m_lastResolvedRow, m_currentAttempts );
+    }
+    m_currentAttempts = 0;
 }
 
 void 
 DynamicModel::trackResolveFinished( bool success )
 {
     if( !success ) { // if it was successful, we've already gotten a trackResolved() signal
+        Query* q = qobject_cast<Query*>(sender());
+        qDebug() << "Got not resolved track:" << q->track() << q->artist() << m_lastResolvedRow << m_currentAttempts;
         m_currentAttempts++;
-        if( m_currentAttempts < 100 ) {
+        if( m_currentAttempts < 30 ) {
             m_playlist->generator()->fetchNext();
+        } else {
+            // TODO handle failure
         }
     }
 }
@@ -103,6 +117,21 @@ void
 DynamicModel::newTrackLoading()
 {
     if( m_onDemandRunning && m_currentAttempts == 0 ) { // if we're in dynamic mode and we're also currently idle
+        m_lastResolvedRow = rowCount( QModelIndex() );
         m_playlist->generator()->fetchNext();
     }
 }
+
+void 
+DynamicModel::removeIndex(const QModelIndex& index, bool moreToCome)
+{
+    if ( isReadOnly() )
+        return;
+    
+    if( m_playlist->mode() == OnDemand )
+        TrackModel::removeIndex( index );
+    // don't call onPlaylistChanged.
+        
+    if( !moreToCome )
+        m_lastResolvedRow = rowCount( QModelIndex() );
+}

src/libtomahawk/playlist/dynamic/DynamicModel.h

@@ -40,7 +40,11 @@ public:
     void stopOnDemand();
     
     void loadPlaylist( const dynplaylist_ptr& playlist );
-        
+    
+    virtual void removeIndex( const QModelIndex& index, bool moreToCome = false );
+signals:
+    void collapseFromTo( int startRow, int num );
+    
 private slots:    
     void newTrackGenerated( const Tomahawk::query_ptr& query );
     
@@ -53,6 +57,7 @@ private:
     bool m_startOnResolved;
     bool m_onDemandRunning;
     int m_currentAttempts;
+    int m_lastResolvedRow;
 };
     
 };

src/libtomahawk/playlist/dynamic/DynamicView.cpp

@@ -18,16 +18,35 @@
 
 #include "widgets/overlaywidget.h"
 #include "playlistmodel.h"
+#include "trackproxymodel.h"
 
 #include <QPainter>
+#include <QPaintEvent>
+#include <QtGui/qpaintengine.h>
 using namespace Tomahawk;
 
+#define FADE_LENGTH 800
+#define SLIDE_LENGTH 300
+#define SLIDE_OFFSET 500
+#define LONG_MULT 0.4 // to avoid superfast slides when the length is long, make it longer incrementally
 
 DynamicView::DynamicView( QWidget* parent )
         : PlaylistView( parent )
         , m_onDemand( false )
 {
+    m_fadeOutAnim.setDuration( FADE_LENGTH );
+    m_fadeOutAnim.setCurveShape( QTimeLine::LinearCurve );
+    m_fadeOutAnim.setFrameRange( 100, 0 );
+    m_fadeOutAnim.setUpdateInterval( 10 );
     
+    QEasingCurve curve( QEasingCurve::OutBounce );
+    curve.setAmplitude( .2 );
+    m_slideAnim.setEasingCurve( curve );
+    m_slideAnim.setDirection( QTimeLine::Forward );
+    m_fadeOutAnim.setUpdateInterval( 10 );
+    
+    
+    connect( &m_fadeOutAnim, SIGNAL( frameChanged( int ) ), viewport(), SLOT( update() ) );
 }
 
 DynamicView::~DynamicView()
@@ -74,3 +93,77 @@ DynamicView::onTrackCountChanged( unsigned int tracks )
     else
         overlay()->hide();
 }
+
+void 
+DynamicView::collapseEntries( int startRow, int num )
+{
+    if( m_fadeOutAnim.state() == QTimeLine::Running )
+        qDebug() << "COLLAPSING TWICE!";
+    // 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() );
+    QItemSelection sel( topLeft, bottomRight );
+    QRect fadingRect = visualRegionForSelection( sel ).boundingRect();
+    
+    m_fadingIndexes = QPixmap::grabWidget( viewport(), fadingRect );
+    m_fadingPointAnchor = fadingRect.topLeft();
+    
+    qDebug() << "Grabbed fading indexes from rect:" << fadingRect << m_fadingIndexes.size();
+    
+    topLeft = proxyModel()->index( startRow + num, 0, QModelIndex() );
+    bottomRight = proxyModel()->index( startRow + num, proxyModel()->columnCount( QModelIndex() ) - 1, QModelIndex() );
+    QRect slidingRect = visualRegionForSelection( QItemSelection( topLeft, bottomRight ) ).boundingRect();
+    
+    m_slidingIndex = QPixmap::grabWidget( viewport(), slidingRect );
+    m_bottomAnchor = slidingRect.topLeft();
+    qDebug() << "Grabbed sliding index from rect:" << slidingRect << m_slidingIndex.size();
+    
+    // slide from the current position to the new one
+    int frameRange = fadingRect.topLeft().y() - slidingRect.topLeft().y();
+    m_slideAnim.setDuration( SLIDE_LENGTH + frameRange * LONG_MULT );
+    m_slideAnim.setFrameRange( slidingRect.topLeft().y(), fadingRect.topLeft().y() );
+    
+    m_fadeOutAnim.start();
+    QTimer::singleShot( SLIDE_OFFSET, &m_slideAnim, SLOT( start() ) );
+    
+    QModelIndexList todel;
+    for( int i = 0; i < num; i++ ) {
+        for( int k = 0; k < proxyModel()->columnCount( QModelIndex() ); k++ ) {
+            todel << proxyModel()->index( startRow + i, k );
+        }
+    }
+    proxyModel()->removeIndexes( todel );
+}
+
+void 
+DynamicView::paintEvent( QPaintEvent* event )
+{
+    TrackView::paintEvent(event);
+    
+    QPainter p( viewport() );
+    if( m_fadeOutAnim.state() == QTimeLine::Running ) { // both run together
+        p.save();
+        QRect bg = m_fadingIndexes.rect();
+        bg.moveTo( m_fadingPointAnchor ); // cover up the background
+        p.fillRect( bg, Qt::white );
+        
+//         qDebug() << "FAST SETOPACITY:" << p.paintEngine()->hasFeature(QPaintEngine::ConstantOpacity);
+        p.setOpacity( m_fadeOutAnim.currentFrame() );
+        p.drawPixmap( m_fadingPointAnchor, m_fadingIndexes );
+        
+        p.restore();   
+        
+        if( m_slideAnim.state() == QTimeLine::Running ) {
+            // draw the collapsing entry
+            QRect bg = m_slidingIndex.rect();
+            bg.moveTo( m_bottomAnchor );
+            p.fillRect( bg, Qt::white );
+            p.drawPixmap( 0, m_slideAnim.currentFrame(), m_slidingIndex );
+        } else if( m_fadeOutAnim.state() == QTimeLine::Running ) {
+            p.drawPixmap( m_bottomAnchor, m_slidingIndex );
+        }
+    }
+}
+

src/libtomahawk/playlist/dynamic/DynamicView.h

@@ -20,6 +20,7 @@
 #include "playlist/playlistview.h"
 #include <QTimer>
 #include <QPropertyAnimation>
+#include <QTimeLine>
 
 class PlaylistModel;
 class TrackModel;
@@ -36,20 +37,33 @@ public:
     virtual void setModel( PlaylistModel* model );
     
     void setOnDemand( bool onDemand );
+    
+    virtual void paintEvent(QPaintEvent* event);
+    
 public slots:
     void showMessageTimeout( const QString& title, const QString& body );
     
+    // 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 );
+    
 private slots:
     void onTrackCountChanged( unsigned int );
     
 private:
-    QTimer m_showTimer;
-    QPropertyAnimation* m_fadeOut;
-    
     QString m_title;
     QString m_body;
     
     bool m_onDemand;
+    
+    // for collapsing animation
+    QPoint m_fadingPointAnchor;
+    QPoint m_bottomAnchor;
+    QPixmap m_fadingIndexes;
+    QPixmap m_slidingIndex;
+    QTimeLine m_fadeOutAnim;
+    QTimeLine m_slideAnim;
 };
     
 };

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

@@ -90,7 +90,7 @@ DynamicWidget::DynamicWidget( const Tomahawk::dynplaylist_ptr& playlist, QWidget
     m_view->setModel( m_model );
     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 );
         
     loadDynamicPlaylist( playlist );