Qt: VLCModel/TreeView: delegate cover rendering (fix #10206)

modules/gui/qt4/components/playlist/playlist_model.cpp

@@ -381,7 +381,7 @@ QVariant PLModel::data( const QModelIndex &index, const int role ) const
                         break;
                 }
             }
-            return QVariant( artUrl );
+            return artUrl;
         }
         else
         {
@@ -391,51 +391,25 @@ QVariant PLModel::data( const QModelIndex &index, const int role ) const
         }
         return QVariant( returninfo );
     }
-    else if( role == Qt::DecorationRole && index.column() == 0  )
+    else if( role == Qt::DecorationRole )
     {
-        /* Used to segfault here because i_type wasn't always initialized */
-        return QVariant( icons[item->inputItem()->i_type] );
+        switch( columnToMeta(index.column()) )
+        {
+        case COLUMN_TITLE:
+            /* Used to segfault here because i_type wasn't always initialized */
+            return QVariant( icons[item->inputItem()->i_type] );
+        case COLUMN_COVER:
+            /* !warn: changes tree item line height. Otherwise, override
+             * delegate's sizehint */
+            return getArtPixmap( index, QSize(16,16) );
+        default:
+            return QVariant();
+        }
     }
     else if( role == Qt::FontRole )
     {
         return QVariant( QFont() );
     }
-    else if( role == Qt::ToolTipRole )
-    {
-        int i_art_policy = var_GetInteger( p_playlist, "album-art" );
-        QString artUrl;
-        /* FIXME: Skip, as we don't want the pixmap and do not know the cached art file */
-        if ( i_art_policy == ALBUM_ART_ALL )
-            artUrl = getArtUrl( index );
-        if ( artUrl.isEmpty() ) artUrl = ":/noart";
-        QString duration = qtr( "unknown" );
-        QString name;
-        PL_LOCK;
-        input_item_t *p_item = item->inputItem();
-        if ( !p_item )
-        {
-            PL_UNLOCK;
-            return QVariant();
-        }
-        if ( p_item->i_duration > 0 )
-        {
-            char *psz = psz_column_meta( item->inputItem(), COLUMN_DURATION );
-            duration = qfu( psz );
-            free( psz );
-        }
-        name = qfu( p_item->psz_name );
-        PL_UNLOCK;
-        QPixmap image = getArtPixmap( index, QSize( 128, 128 ) );
-        QByteArray bytes;
-        QBuffer buffer( &bytes );
-        buffer.open( QIODevice::WriteOnly );
-        image.save(&buffer, "BMP"); /* uncompressed, see qpixmap#reading-and-writing-image-files */
-        return QVariant( QString("<img width=\"128\" height=\"128\" align=\"left\" src=\"data:image/bmp;base64,%1\"/><div><b>%2</b><br/>%3</div>")
-                         .arg( bytes.toBase64().constData() )
-                         .arg( name )
-                         .arg( qtr("Duration") + ": " + duration )
-                        );
-    }
     else if( role == Qt::BackgroundRole && isCurrent( index ) )
     {
         return QVariant( QBrush( Qt::gray ) );

modules/gui/qt4/components/playlist/sorting.h

@@ -61,7 +61,7 @@ static inline const char * psz_column_title( uint32_t i_column )
     case COLUMN_DESCRIPTION:     return VLC_META_DESCRIPTION;
     case COLUMN_URI:             return _("URI");
     case COLUMN_RATING:          return VLC_META_RATING;
-    case COLUMN_COVER:           return VLC_META_ART_URL;
+    case COLUMN_COVER:           return _("Cover");
     default: abort();
     }
 }

modules/gui/qt4/components/playlist/views.cpp

@@ -288,6 +288,13 @@ void PlTreeViewItemDelegate::paint( QPainter * painter, const QStyleOptionViewIt
     }
 }
 
+void CellPixmapDelegate::paint( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
+{
+    QPixmap pixmap = index.data( Qt::DecorationRole ).value<QPixmap>();
+    painter->drawPixmap( option.rect.topLeft(),
+                         pixmap.scaled( option.rect.size(), Qt::KeepAspectRatio ) );
+}
+
 static inline void plViewStartDrag( QAbstractItemView *view, const Qt::DropActions & supportedActions )
 {
     QDrag *drag = new QDrag( view );
@@ -415,7 +422,8 @@ bool PlListView::viewportEvent ( QEvent * event )
 PlTreeView::PlTreeView( QAbstractItemModel *, QWidget *parent ) : QTreeView( parent )
 {
     setItemDelegate( new PlTreeViewItemDelegate( this ) );
-
+    setItemDelegateForColumn( VLCModel::metaToColumn(COLUMN_COVER),
+                              new CellPixmapDelegate( this ) );
     setIconSize( QSize( 20, 20 ) );
     setAlternatingRowColors( true );
     setAnimated( true );

modules/gui/qt4/components/playlist/views.hpp

@@ -78,6 +78,15 @@ public:
     virtual void paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const;
 };
 
+class CellPixmapDelegate : public QStyledItemDelegate
+{
+    Q_OBJECT
+
+public:
+    CellPixmapDelegate(QWidget *parent = 0) : QStyledItemDelegate(parent) {}
+    virtual void paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const;
+};
+
 class PlIconView : public QListView
 {
     Q_OBJECT

modules/gui/qt4/components/playlist/vlc_model.cpp

@@ -76,18 +76,10 @@ QString VLCModel::getMeta( const QModelIndex & index, int meta )
         data().toString();
 }
 
-QString VLCModel::getArtUrl( const QModelIndex & index )
-{
-    return index.model()->index( index.row(),
-                    columnFromMeta( COLUMN_COVER ),
-                    index.parent() )
-           .data().toString();
-}
-
 QPixmap VLCModel::getArtPixmap( const QModelIndex & index, const QSize & size )
 {
-    QString artUrl = VLCModel::getArtUrl( index ) ;
-
+    QString artUrl = index.sibling( index.row(),
+                     VLCModel::columnFromMeta(COLUMN_COVER) ).data().toString();
     QPixmap artPix;
 
     QString key = artUrl + QString("%1%2").arg(size.width()).arg(size.height());
@@ -141,6 +133,21 @@ int VLCModel::columnToMeta( int _column )
     return meta;
 }
 
+int VLCModel::metaToColumn( int _meta )
+{
+    int meta = 1, column = 0;
+
+    while( meta != COLUMN_END )
+    {
+        if ( meta & _meta )
+            break;
+        meta <<= 1;
+        column++;
+    }
+
+    return column;
+}
+
 int VLCModel::itemId( const QModelIndex &index, int type ) const
 {
     AbstractPLItem *item = getItem( index );
@@ -198,8 +205,8 @@ void VLCModel::ensureArtRequested( const QModelIndex &index )
         QModelIndex child;
         for( int row = 0 ; row < nbnodes ; row++ )
         {
-            child = index.child( row, 0 );
-            if ( child.isValid() && getArtUrl( child ).isEmpty() )
+            child = index.child( row, COLUMN_COVER );
+            if ( child.isValid() && child.data().toString().isEmpty() )
                 THEMIM->getIM()->requestArtUpdate( getInputItem( child ) );
         }
     }

modules/gui/qt4/components/playlist/vlc_model.hpp

@@ -163,9 +163,9 @@ public:
 
     /* Custom */
     static int columnToMeta( int _column );
+    static int metaToColumn( int meta );
     static QString getMeta( const QModelIndex & index, int meta );
     static QPixmap getArtPixmap( const QModelIndex & index, const QSize & size );
-    static QString getArtUrl( const QModelIndex & index );
 
 protected:
     /* Custom methods / helpers */