Untitled

void ReportScene::drawBackground ( QPainter* painter, const QRectF & clip )
{
	painter->setRenderHint ( QPainter::Antialiasing, true );

	if ( _rd->propertySet()->property ( "ShowGrid" ).value().toBool() )
	{
		qreal major;
		int minor;
		qreal pixel_increment;
		bool found;
		QString u = _rd->propertySet()->property ( "PageUnit" ).value().toString();

		u = u.mid ( u.find ( "(" ) + 1, 2 );

		KoUnit unit = KoUnit::unit ( u, &found );

		if ( !found )
		{
			kDebug() << "Unable to find page unit" << endl;
			return;
		}
		if ( u == "cc" || u == "pi" || u == "mm" )
			major = POINT_TO_INCH ( unit.fromUserValue ( 10 ) ) * KoGlobal::dpiX();
		else if ( u == "pt" )
			major = POINT_TO_INCH ( unit.fromUserValue ( 100 ) ) * KoGlobal::dpiX();
		else
			major = POINT_TO_INCH ( unit.fromUserValue ( 1 ) ) * KoGlobal::dpiX();

		minor = _rd->propertySet()->property ( "GridDivisions" ).value().toInt();
		pixel_increment = ( major/minor );

		QPen pen = painter->pen();
		painter->setPen(QColor(212,212,212));

		if ( pixel_increment > 2 ) // dont bother painting points if increments are so small
		{
			for ( qreal y = 0.0; y < sceneRect().bottom(); y += pixel_increment )
			{
				for ( qreal x = 0.0; x < sceneRect().right(); x += pixel_increment )
				{
					if ( x >= clip.left() && y >= clip.top() )
					{
						painter->drawPoint ( QPointF ( x, y ) );
					}

				}

			}
		}
		
		//now draw the lines
		for ( qreal y = 0.0; y < sceneRect().bottom(); y += major )
		{
			for ( qreal x = 0.0; x < sceneRect().right(); x += major )
			{
				if ( x >= clip.left() && y >= clip.top() )
				{
					painter->drawLine ( QPointF ( x,y ),QPointF ( x,y+major ) );
					painter->drawLine ( QPointF ( x,y ),QPointF ( x+major,y ) );
				}
			}
		}
	
		pen.setWidth(1);
		update ( clip );
	}
}