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* Made PlaylistItemDelegate's paint method a lot faster with manual alpha-blending.

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This commit is contained in:
Christian Muehlhaeuser 2011-04-03 11:20:35 +02:00
parent b625b9a265
commit 84f6886e8d
1 changed files with 17 additions and 6 deletions
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23
src/libtomahawk/playlist/playlistitemdelegate.cpp
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@ -72,14 +72,18 @@ PlaylistItemDelegate::paint( QPainter* painter, const QStyleOptionViewItem& opti
if ( !item || item->query().isNull() )
return;
float opacity = 0.0;
painter->save();
if ( item->query()->results().count() )
painter->setOpacity( item->query()->results().at( 0 )->score() );
else
painter->setOpacity( 0.0 );
opacity = item->query()->results().first()->score();
if ( painter->opacity() < 0.3 )
painter->setOpacity( 0.3 );
opacity = qMax( (float)0.3, opacity );
int r = 0, g = 0, b = 0;
r = opacity * r + ( 1 - opacity ) * 255;
g = opacity * g + ( 1 - opacity ) * 255;
b = opacity * b + ( 1 - opacity ) * 255;
QColor tc( r, g, b );
if ( item->isPlaying() )
{
@ -113,7 +117,14 @@ PlaylistItemDelegate::paint( QPainter* painter, const QStyleOptionViewItem& opti
}
else
{
QStyledItemDelegate::paint( painter, option, index );
if ( const QStyleOptionViewItem *vioption = qstyleoption_cast<const QStyleOptionViewItem *>(&option))
{
QStyleOptionViewItemV4 o( *vioption );
o.palette.setColor( QPalette::Text, tc );
QStyledItemDelegate::paint( painter, o, index );
}
else
QStyledItemDelegate::paint( painter, option, index );
}
painter->restore();