Qml GridLayout how to specify a column width?

问题

I have a column with two groupbox which each have a GridLayout.

Here is my code:

 Window {
    visible: true
    width: 500
    height: 480
    title: qsTr("GridLayoutTest")
Column
{
    GroupBox
    {
        contentWidth: gl1_.width
        contentHeight: gl1_.height
            GridLayout
            {
                id: gl1_
                columns: 2
                width: 200
                Rectangle { Layout.preferredWidth: 60; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 45; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 50; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 45; Layout.preferredHeight: 25; color: "purple"; }
            }
    }
    GroupBox
    {
        contentWidth: gl2_.width
        contentHeight: gl2_.height
            GridLayout
            {
                id: gl2_
                columns: 2
                width: 200
                Rectangle { Layout.preferredWidth: 60; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 60; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 35; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 60; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 60; Layout.preferredHeight: 25; color: "purple"; }
                Rectangle { Layout.preferredWidth: 60; Layout.preferredHeight: 25; color: "purple"; }
            }
    }
}

}

My problem is the following: each gridLayout have his own alignment and all my right elements are not correctly aligned. I want to have the same alignment for all my right elements.

Result:

It is a way to do this ?

回答1:

Ok, you have some problem with the sizes. You define your GridLayout width as 200px but also you define sizes for items, for example the first row id 60 + 25 = 85, not 200. So the layout has to fix it somehow. It stretches the cells, I guess according to items sizes.

So you have to set fixed size for the first column for all the layouts. The remaining space of the 2nd column you could wrap with Item:

Column {
    anchors.fill: parent
    anchors.margins: 20
    GroupBox {
        id: box1
        title: "group 1"
        width: parent.width
        GridLayout {
            width: parent.width
            columns: 2
            Rectangle { implicitHeight: 40; color: "orange"; Layout.preferredWidth: 250 }
            Item {
                Layout.fillWidth: true
                implicitHeight: 40;
                Rectangle { implicitHeight: 40; color: "lightgreen"; implicitWidth: 180 }
            }
            Rectangle { implicitHeight: 40; color: "orange"; Layout.preferredWidth: 250 }
            Item {
                Layout.fillWidth: true
                implicitHeight: 40;
                Rectangle { implicitHeight: 40; color: "lightgreen"; implicitWidth: 60 }
            }
        }
    }
    GroupBox {
        id: box2
        title: "group 2"
        width: parent.width
        GridLayout {
            width: parent.width
            columns: 2
            Rectangle { implicitHeight: 40; color: "orange"; Layout.preferredWidth: 250 }
            Item {
                Layout.fillWidth: true
                implicitHeight: 40;
                Rectangle { implicitHeight: 40; color: "lightgreen"; implicitWidth: 80 }
            }
            Rectangle { implicitHeight: 40; color: "orange"; Layout.preferredWidth: 250 }
            Item {
                Layout.fillWidth: true
                implicitHeight: 40;
                Rectangle { implicitHeight: 40; color: "lightgreen"; implicitWidth: 120 }
            }
        }
    }
}

来源：https://stackoverflow.com/questions/53155188/qml-gridlayout-how-to-specify-a-column-width

标签

qml

grid-layout

column-width