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Code Issues Releases Wiki Activity

* 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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21
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() ) if ( !item || item->query().isNull() )
return; return;
float opacity = 0.0;
painter->save(); painter->save();
if ( item->query()->results().count() ) if ( item->query()->results().count() )
painter->setOpacity( item->query()->results().at( 0 )->score() ); opacity = item->query()->results().first()->score();
else
painter->setOpacity( 0.0 );
if ( painter->opacity() < 0.3 ) opacity = qMax( (float)0.3, opacity );
painter->setOpacity( 0.3 ); 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() ) if ( item->isPlaying() )
{ {
@@ -113,6 +117,13 @@ PlaylistItemDelegate::paint( QPainter* painter, const QStyleOptionViewItem& opti
} }
else else
{ {
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 ); QStyledItemDelegate::paint( painter, option, index );
} }