void QtTableView::updateScrollBars()

in win/Qt/qttableview.cpp [1962:2045]
68 lines of code
33 McCabe index (conditional complexity)

void QtTableView::updateScrollBars( uint f )
{
    sbDirty = sbDirty | f;
    if ( inSbUpdate )
	return;
    inSbUpdate = TRUE;

    if ( testTableFlags(Tbl_autoHScrollBar) && (sbDirty & horRange) ||
	 testTableFlags(Tbl_autoVScrollBar) && (sbDirty & verRange) )
					// if range change and auto
	doAutoScrollBars();		// turn scroll bars on/off if needed

    if ( !autoUpdate() ) {
	inSbUpdate = FALSE;
	return;
    }
    if ( yOffset() > 0 && testTableFlags( Tbl_autoVScrollBar ) &&
	 !testTableFlags( Tbl_vScrollBar ) ) {
	setYOffset( 0 );
    }
    if ( xOffset() > 0 && testTableFlags( Tbl_autoHScrollBar ) &&
	 !testTableFlags( Tbl_hScrollBar ) ) {
	setXOffset( 0 );
    }
    if ( !isVisible() ) {
	inSbUpdate = FALSE;
	return;
    }

    if ( testTableFlags(Tbl_hScrollBar) && (sbDirty & horMask) != 0 ) {
	if ( sbDirty & horGeometry )
	    hScrollBar->setGeometry( 0,height() - HSBEXT,
                                     viewWidth() + frameWidth()*2,
                                   HSBEXT);

	if ( sbDirty & horSteps ) {
	    if ( cellW )
		hScrollBar->setSteps( QMIN(cellW,viewWidth()/2), viewWidth() );
	    else
		hScrollBar->setSteps( 16, viewWidth() );
	}

	if ( sbDirty & horRange )
	    hScrollBar->setRange( 0, maxXOffset() );

	if ( sbDirty & horValue )
	    hScrollBar->setValue( xOffs );

			// show scrollbar only when it has a sane geometry
	if ( !hScrollBar->isVisible() )
	    hScrollBar->show();
    }

    if ( testTableFlags(Tbl_vScrollBar) && (sbDirty & verMask) != 0 ) {
	if ( sbDirty & verGeometry )
	    vScrollBar->setGeometry( width() - VSBEXT, 0,
                                     VSBEXT,
                                     viewHeight() + frameWidth()*2 );

	if ( sbDirty & verSteps ) {
	    if ( cellH )
		vScrollBar->setSteps( QMIN(cellH,viewHeight()/2), viewHeight() );
	    else
		vScrollBar->setSteps( 16, viewHeight() );  // fttb! ###
	}

	if ( sbDirty & verRange )
	    vScrollBar->setRange( 0, maxYOffset() );

	if ( sbDirty & verValue )
	    vScrollBar->setValue( yOffs );

			// show scrollbar only when it has a sane geometry
	if ( !vScrollBar->isVisible() )
	    vScrollBar->show();
    }
    if ( coveringCornerSquare &&
	 ( (sbDirty & verGeometry ) || (sbDirty & horGeometry)) )
	cornerSquare->move( maxViewX() + frameWidth() + 1,
			    maxViewY() + frameWidth() + 1 );

    sbDirty = 0;
    inSbUpdate = FALSE;
}