class Strip: Row {
    function measure(self: Strip, mount: Mount, constraints: Constraints): MeasureResult {
        return MeasureResult(340, 60)
    }
}
class Actions {
    first: RectBlock
    second: RectBlock
    function grow(self: Actions): Unit {
        self.first.flexMin = 0
        self.first.flexMax = 105
        self.first.flexBasis = 100
        self.second.flexBasis = 100
        self.first.flex = 1
        self.second.flex = 3
    }
    function shrink(self: Actions): Unit {
        self.first.flexMax = 300
        self.first.flexMin = 150
        self.first.flexBasis = 200
        self.second.flexBasis = 200
        self.first.flex = 0
        self.second.flex = 0
        self.first.flexShrink = 1
        self.second.flexShrink = 1
    }
}
first = RectBlock(20, 20, 4, "#A4C8F0")
second = RectBlock(40, 20, 4, "#A6D8B2")
fixed = RectBlock(60, 20, 4, "#E8C990")
actions = Actions(first, second)
grow = Button("增长：上限后重新分配")
grow.onClick(actions.grow)
shrink = Button("收缩：最小尺寸后重新分配")
shrink.onClick(actions.shrink)
actions.grow()
strip = Strip(10, 10, first, second, fixed)
page = Page()
page.title = "基础尺寸与边界"
page.render(Column(20, 12, Row(0, 10, grow, shrink), strip, TextBlock("增长：105 / 135 / 60；收缩：150 / 90 / 60。")))