static QWidget *qwtBGWidget( QWidget *widget )
{
QWidget *w = widget;
for ( ; w->parentWidget() != NULL; w = w->parentWidget() )
{
if ( w->autoFillBackground() ||
w->testAttribute( Qt::WA_StyledBackground ) )
{
return w;
}
}
return w;
}
void QwtPlotAbstractCanvas::drawUnstyled( QPainter *painter )
{
fillBackground( painter );
QWidget *w = canvasWidget();
if ( w->autoFillBackground() )
{
const QRect canvasRect = w->rect();
painter->save();
painter->setPen( Qt::NoPen );
painter->setBrush( w->palette().brush( w->backgroundRole() ) );
const QRect frameRect = w->property( "frameRect" ).toRect();
if ( borderRadius() > 0.0 && ( canvasRect == frameRect ) )
{
const int frameWidth = w->property( "frameWidth" ).toInt();
if ( frameWidth > 0 )
{
painter->setClipPath( borderPath2( canvasRect ) );
painter->drawRect( canvasRect );
}
else
{
painter->setRenderHint( QPainter::Antialiasing, true );
painter->drawPath( borderPath2( canvasRect ) );
}
}
else
{
painter->drawRect( canvasRect );
}
painter->restore();
}
drawCanvas( painter );
}