question: protected Size2D arrangeFN ( BlockContainer container , Graphics2D g2 , RectangleConstraint constraint ) { double width = constraint . getWidth ( ) / this . columns ; RectangleConstraint bc = constraint . toFixedWidth ( width ) ; List blocks = container . getBlocks ( ) ; double maxH = 0.0 ; for ( int r = 0 ; r < this . rows ; r ++ ) { for ( int c = 0 ; c < this . columns ; c ++ ) { int index = r * this . columns + c ; if ( index >= blocks . size ( ) ) { break ; } Block b = ( Block ) blocks . get ( index ) ; if ( b != null ) { Size2D s = b . arrange ( g2 , bc ) ; maxH = Math . max ( maxH , s . getHeight ( ) ) ; } } } RectangleConstraint cc = constraint . toFixedHeight ( maxH * this . rows ) ; return arrange ( container , g2 , cc ) ; }
target:  Arrange with a fixed width and a height within a given range.