如何进行布局？

如何修复缩进并使代码更简单：

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Layouts 1.12

Window {
    id: root
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    RowLayout {
        id: _rootLayout
        anchors.fill: parent
        anchors.margins: 10
        spacing: 10

        ColumnLayout {
            id: _1_2_6
            Layout.fillHeight: true
            Layout.preferredWidth: (_rootLayout.width - _rootLayout.spacing) * 0.66
            RowLayout {
                id: _1_2
                Layout.fillWidth: true
                Rectangle {
                    id: _1
                    Layout.fillHeight: true
                    Layout.preferredWidth: (_1_2_6.width - _1_2_6.spacing) * 0.33
                    color: "green"
                    Text {
                        text: "1"
                    }
                }
                Rectangle {
                    id: _2
                    Layout.fillHeight: true
                    Layout.preferredWidth: _1_2_6.width - _1_2_6.spacing - _1.width
                    color: "lightgreen"
                    Text {
                        text: "2"
                    }
                }
            }
            Rectangle {
                id: _6
                Layout.fillWidth: true
                Layout.preferredHeight: (_1_2_6.height - _1_2_6.spacing) * 0.33
                color: "grey"
                Text {
                    text: "6"
                }
            }
        }
        ColumnLayout {
            id: _3_4_5
            Layout.fillHeight: true
            Layout.preferredWidth: (_rootLayout.width - _rootLayout.spacing) - _1_2_6.width
            Rectangle {
                id: _3
                Layout.fillWidth: true
                Layout.fillHeight: true
                color: "lightgray"
                Text {
                    text: "3"
                }
            }
            Rectangle {
                id: _4
                Layout.fillWidth: true
                Layout.fillHeight: true
                color: "orange"
                Text {
                    text: "4"
                }
            }
            Rectangle {
                id: _5
                Layout.fillWidth: true
                Layout.fillHeight: true
                color: "skyblue"
                Text {
                    text: "5"
                }
            }
        }
    }
}

如您所见，左列和右列之间的填充比其他地方多。此外，4-5 之间的差距并不总是与差距 2-6（屏幕 2）在高度上匹配。

我也不喜欢这样，如果你_1_2_6有更多的列，你需要减去更多的间距（像这样：）Layout.preferredWidth: (_rootLayout.width - 2 * _rootLayout.spacing) * 0.66。是否可以像 QWidget layout Stretch 那样设置拉伸因子？

最后，Qt Quick Layouts: Polish loop detected. Aborting after two iterations当我水平缩小时，日志中会显示一条“ ”消息。为什么？