Viewのサイズを自動調整する方法

[umemura]

View.set-size-from-child を利用することでうまく大きさを調整することができました。

Code:

{def fr1:Frame =
    {Frame
        background = "orange",
        width = {make-elastic preferred-size = 5in},
        height = {make-elastic preferred-size = 2in}
    }
}
{def fr2:Frame =
    {Frame
        background = "pink",
        width = {make-elastic preferred-size = 5in},
        height = {make-elastic preferred-size = 2in}
    }
}
{def fr3:Frame =
    {Frame
        background = "aqua",
        width = {make-elastic preferred-size = 5in},
        height = {make-elastic preferred-size = 2in}
    }
}
{def vb = {VBox fr1, fr3}}
{def v =  {View vb}}
{do  {v.show}}
{CommandButton
    label = "View のグラフィックを変更",
    {on Action do
        {vb.add index = 1, fr2}
    }
}
{CommandButton
    label = "View のサイズを調整",
    {on Action do
        {v.set-size-from-child}
    }
}