From af0d628a755009e83fe54a8e6d3ea4e88fb6b627 Mon Sep 17 00:00:00 2001
From: Leo Franchi <lfranchi@kde.org>
Date: Wed, 16 Feb 2011 09:39:49 -0500
Subject: [PATCH] fade out bg if we're not painting alternating row colors for
 empty rows

---
 src/libtomahawk/playlist/dynamic/DynamicView.cpp | 12 +++++++++++-
 src/libtomahawk/playlist/dynamic/DynamicView.h   |  1 +
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/libtomahawk/playlist/dynamic/DynamicView.cpp b/src/libtomahawk/playlist/dynamic/DynamicView.cpp
index 0516b3a55..0b37ef3a0 100644
--- a/src/libtomahawk/playlist/dynamic/DynamicView.cpp
+++ b/src/libtomahawk/playlist/dynamic/DynamicView.cpp
@@ -40,6 +40,7 @@ DynamicView::DynamicView( QWidget* parent )
         : PlaylistView( parent )
         , m_onDemand( false )
         , m_checkOnCollapse( false )
+        , m_fadebg( false )
 {
     m_fadeOutAnim.setDuration( FADE_LENGTH );
     m_fadeOutAnim.setCurveShape( QTimeLine::LinearCurve );
@@ -192,6 +193,7 @@ DynamicView::collapseEntries( int startRow, int num, int numToKeep )
     QStyleOptionViewItemV4 opt = viewOptions();
     // code taken from QTreeViewPrivate::paintAlternatingRowColors
     if( alternatingRowColors() ) {
+        m_fadebg = !style()->styleHint( QStyle::SH_ItemView_PaintAlternatingRowColorsForEmptyArea, &opt );
         qDebug() << "PAINTING ALTERNATING ROW BG!: " << fadingRectViewport;
         int rowHeight = itemDelegate()->sizeHint( opt, QModelIndex() ).height();
         int y = m_fadingIndexes.rect().topLeft().y();
@@ -266,8 +268,16 @@ DynamicView::paintEvent( QPaintEvent* event )
         p.save();
         QRect bg = m_fadingIndexes.rect();
         bg.moveTo( m_fadingPointAnchor ); // cover up the background
+        if( m_fadebg ) {
+            p.save();
+            p.fillRect( bg, Qt::white );
+            
+            p.setOpacity( 1 - m_fadeOutAnim.currentValue() );
+        }
         p.drawPixmap( bg, m_bg );
-        
+        if( m_fadebg ) {
+            p.restore();
+        }
         
 //         qDebug() << "FAST SETOPACITY:" << p.paintEngine()->hasFeature(QPaintEngine::ConstantOpacity);
         p.setOpacity( 1 - m_fadeOutAnim.currentValue() );
diff --git a/src/libtomahawk/playlist/dynamic/DynamicView.h b/src/libtomahawk/playlist/dynamic/DynamicView.h
index 73cc62035..f3dd452fc 100644
--- a/src/libtomahawk/playlist/dynamic/DynamicView.h
+++ b/src/libtomahawk/playlist/dynamic/DynamicView.h
@@ -76,6 +76,7 @@ private:
     QPixmap m_fadingIndexes;
     QPixmap m_slidingIndex;
     QPixmap m_bg;
+    bool m_fadebg;
     QTimeLine m_fadeOutAnim;
     QTimeLine m_slideAnim;
 };