if (this.leftBlock != null) {
            RectangleConstraint c3 = new RectangleConstraint(0.0,
                    new Range(0.0, constraint.getWidth()),
                    LengthConstraintType.RANGE, h[2], null,
                    LengthConstraintType.FIXED);
            Size2D size = this.leftBlock.arrange(g2, c3);
            w[2] = size.width;