FixSizeConstraints
static void FixSizeConstraints(float& min, float& max,
static void FixSizeConstraints(BSize& min, BSize& max,
BLayoutUtils::FixSizeConstraints(min, max, preferred);
FixSizeConstraints(min.width, max.width, preferred.width);
FixSizeConstraints(min.height, max.height, preferred.height);