constraints.lzx

<canvas>
  <view width="140" height="140" bgcolor="black">
    <view x="1" y="1" width="${parent.width - 2}" height="${parent.height - 2}">
      <simplelayout axis="y"/>
      
      <view width="${parent.width*.25}" height="20" bgcolor="red"/>
      <view width="${parent.width*.50}" height="20" bgcolor="green"/>
      <view width="${parent.width*.75}" height="20" bgcolor="blue"/>
      <view width="${parent.width}" height="20" bgcolor="yellow"/>
    </view>
  </view>
</canvas>