Question

我想要一个具有列布局的动态可调整大小的窗口，这样任何剩余的空间都会被列中的最后一项填充。我可以通过动态计算javascript中最后一项的高度来做到这一点。我还可以将最后一个项目移出列并将顶部绑定到列的底部和容器的底部，但是我还必须从其内容中计算列的新大小。

import QtQuick 2.0
import QtQuick.Controls 1.1

Rectangle {
    id: rect
    anchors.fill: parent
    Column {
        id: myColumn
        anchors.fill: parent
        Rectangle {
            id: container
            signal clicked
            width: label.width + 20; height: label.height + 6
            anchors { right: parent.right }
            border.width: 1
            MouseArea {
                id: mouseArea
                anchors.fill: parent
                onClicked:  {
                    if (myColumn.state == 'hidden') { myColumn.state = '' }
                    else { myColumn.state = 'hidden'; }
                }
            }
            Text {
                id: label
                text: { if (myColumn.state == '') {"Hide"} else {"Show"} }
                anchors.centerIn: parent
            }
        }
        Text {
            id: textualBox
            text: "A Big Box"
            verticalAlignment: Text.AlignVCenter
            horizontalAlignment: Text.AlignHCenter
            anchors { left: parent.left; right: parent.right }
            height: 200
        }

        TableView {
            id: table
            width: parent.width
            height: { myColumn.height - container.height - textualBox.height }
            model: myData
            TableViewColumn { role: "name"; title: "name"; width: 60 }
            TableViewColumn { role: "stuff"; title: "stuff"; width: 60 }
        }

        states: State {
            name: 'hidden'
            PropertyChanges {
                target: textualBox
                height: 20
                text: "a little box"
            }
        }
    }    
    ListModel {
       id: myData
       ListElement{ name: "content" ; stuff: "4.5" }
       ListElement{ name: "content" ; stuff: "4.5" }
       ListElement{ name: "content" ; stuff: "4.5" }
    }
}

有更优雅的方式吗？

Answer 1

您可以使用ColumnLayout和Layout.fillHeight附加属性代替Column

import QtQuick 2.3
import QtQuick.Controls 1.2
import QtQuick.Layouts 1.1

ApplicationWindow {
    visible: true
    width: 640
    height: 480

    ColumnLayout{
        anchors.fill: parent
        Rectangle {
            color: "red"
            Layout.fillWidth: true
            height: 30
        }
        Rectangle {
            color: "blue"
            Layout.fillWidth: true
            Layout.fillHeight: true
        }
    }
}

Answer 2

您不需要计算所有子元素，您只需要使用parent.height - y代表Column，或者parent.width - x代表Row，

当调整ApplicationWindow的大小时，这也适用

import QtQuick 2.7
import QtQuick.Controls 2.0

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")


        Column{
            anchors.fill: parent

            Rectangle{
                color:  "#ff0000"
                anchors.right: parent.right
                anchors.left: parent.left
                height: 100
            }


            Rectangle{
                color:  "#ffff00"
                anchors.right: parent.right
                anchors.left: parent.left
                height: 100
            }
            Rectangle{
                color:  "#ff00ff"
                anchors.right: parent.right
                anchors.left: parent.left
                height: parent.height - y

                Text {
                    text: qsTr("top line -----------------  ")
                    anchors.top: parent.top
                }

                Text {
                    text: qsTr("bottom line -----------------  ")
                    anchors.bottom: parent.bottom
                }
            }
        }

}

如何使QML容器中的最后一项填充剩余空间？

2 个答案: