From 2c3e7492a5df183e14dbea7ac4a7059dcbf83328 Mon Sep 17 00:00:00 2001
From: Leo Franchi <lfranchi@kde.org>
Date: Mon, 30 Jul 2012 19:51:47 -0400
Subject: [PATCH] Jump to and scroll to playing track in grid view on track
 page

---
 src/libtomahawk/playlist/GridView.cpp         | 11 ++++++
 src/libtomahawk/playlist/GridView.h           |  1 +
 .../widgets/infowidgets/TrackInfoWidget.cpp   | 39 +++++++++++++------
 .../widgets/infowidgets/TrackInfoWidget.h     |  4 +-
 4 files changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/libtomahawk/playlist/GridView.cpp b/src/libtomahawk/playlist/GridView.cpp
index 6714bd97f..4c5e635ca 100644
--- a/src/libtomahawk/playlist/GridView.cpp
+++ b/src/libtomahawk/playlist/GridView.cpp
@@ -417,4 +417,15 @@ GridView::jumpToCurrentTrack()
     return true;
 }
 
+
+QRect
+GridView::currentTrackRect() const
+{
+    if ( !m_playing.isValid() )
+        return QRect();
+
+    return visualRect( m_playing );
+}
+
+
 #include "GridView.moc"
diff --git a/src/libtomahawk/playlist/GridView.h b/src/libtomahawk/playlist/GridView.h
index 13e8fa10b..a5b006d2b 100644
--- a/src/libtomahawk/playlist/GridView.h
+++ b/src/libtomahawk/playlist/GridView.h
@@ -72,6 +72,7 @@ public:
 
     virtual bool setFilter( const QString& filter );
     virtual bool jumpToCurrentTrack();
+    QRect currentTrackRect() const;
 
     virtual bool isBeingPlayed() const { return m_playing.isValid(); }
 
diff --git a/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.cpp b/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.cpp
index 98d20957f..c8c4f4a45 100644
--- a/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.cpp
+++ b/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.cpp
@@ -38,6 +38,7 @@ using namespace Tomahawk;
 TrackInfoWidget::TrackInfoWidget( const Tomahawk::query_ptr& query, QWidget* parent )
     : QWidget( parent )
     , ui( new Ui::TrackInfoWidget )
+    , m_scrollArea( 0 )
 {
     QWidget* widget = new QWidget;
     ui->setupUi( widget );
@@ -98,17 +99,17 @@ TrackInfoWidget::TrackInfoWidget( const Tomahawk::query_ptr& query, QWidget* par
     m_pixmap = TomahawkUtils::defaultPixmap( TomahawkUtils::DefaultAlbumCover, TomahawkUtils::ScaledCover, QSize( 48, 48 ) );
     ui->cover->setPixmap( TomahawkUtils::defaultPixmap( TomahawkUtils::DefaultTrackImage, TomahawkUtils::ScaledCover, QSize( ui->cover->sizeHint() ) ) );
 
-    QScrollArea* area = new QScrollArea();
-    area->setWidgetResizable( true );
-    area->setWidget( widget );
-    area->setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOn );
+    m_scrollArea = new QScrollArea();
+    m_scrollArea->setWidgetResizable( true );
+    m_scrollArea->setWidget( widget );
+    m_scrollArea->setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOn );
 
-    area->setStyleSheet( "QScrollArea { background-color: #454e59 }" );
-    area->setFrameShape( QFrame::NoFrame );
-    area->setAttribute( Qt::WA_MacShowFocusRect, 0 );
+    m_scrollArea->setStyleSheet( "QScrollArea { background-color: #454e59 }" );
+    m_scrollArea->setFrameShape( QFrame::NoFrame );
+    m_scrollArea->setAttribute( Qt::WA_MacShowFocusRect, 0 );
 
     QVBoxLayout* layout = new QVBoxLayout();
-    layout->addWidget( area );
+    layout->addWidget( m_scrollArea );
     setLayout( layout );
     TomahawkUtils::unmarginLayout( layout );
 
@@ -141,12 +142,28 @@ TrackInfoWidget::playlistInterface() const
 bool
 TrackInfoWidget::isBeingPlayed() const
 {
-    //tDebug() << Q_FUNC_INFO << "audioengine playlistInterface = " << AudioEngine::instance()->currentTrackPlaylist()->id();
-    //tDebug() << Q_FUNC_INFO << "albumsView playlistInterface = " << ui->albumsView->playlistInterface()->id();
-    //tDebug() << Q_FUNC_INFO << "tracksView playlistInterface = " << ui->tracksView->playlistInterface()->id();
     if ( ui->similarTracksView->playlistInterface() == AudioEngine::instance()->currentTrackPlaylist() )
         return true;
 
+    if ( ui->similarTracksView->playlistInterface()->hasChildInterface( AudioEngine::instance()->currentTrackPlaylist() ) )
+        return true;
+
+    return false;
+}
+
+
+bool
+TrackInfoWidget::jumpToCurrentTrack()
+{
+    if ( ui->similarTracksView->jumpToCurrentTrack() && !ui->similarTracksView->currentTrackRect().isEmpty() )
+    {
+        // We embed the view in a scrollarea, so we have to manually ensure we make it visible
+        const QRect itemRect = ui->similarTracksView->currentTrackRect();
+        m_scrollArea->ensureVisible( itemRect.right(), itemRect.bottom(), 50, 50 );
+
+        return true;
+    }
+
     return false;
 }
 
diff --git a/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.h b/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.h
index 48766be37..1e26ebfae 100644
--- a/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.h
+++ b/src/libtomahawk/widgets/infowidgets/TrackInfoWidget.h
@@ -40,6 +40,7 @@
 #include "Typedefs.h"
 
 class PlayableModel;
+class QScrollArea;
 
 namespace Ui
 {
@@ -68,7 +69,7 @@ public:
     virtual bool isTemporaryPage() const { return true; }
     virtual bool showInfoBar() const { return false; }
 
-    virtual bool jumpToCurrentTrack() { return false; }
+    virtual bool jumpToCurrentTrack();
 
 public slots:
     void load( const Tomahawk::query_ptr& query );
@@ -88,6 +89,7 @@ private slots:
 
 private:
     Ui::TrackInfoWidget *ui;
+    QScrollArea* m_scrollArea;
 
     Tomahawk::query_ptr m_query;
     Tomahawk::artist_ptr m_artist;