qt-everywhere-src-5.14.1/qtdeclarative/examples/quick/righttoleft/layoutdirection/layoutdirection.qml

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import QtQuick 2.0

Rectangle {
    id: root
    property bool mirror
    property int direction: Qt.application.layoutDirection
    LayoutMirroring.enabled: mirror
    LayoutMirroring.childrenInherit: true
    width: 320
    height: 480
    Column {
        id: columnA
        spacing: 10
        x: 10
        y: 10
        width: 140

        Item {
            id: rowCell
        }
        Text {
            text: "Row"
            anchors.horizontalCenter: parent.horizontalCenter
        }

        Row {
            layoutDirection: root.direction
            spacing: 10
            move: Transition {
                NumberAnimation {
                    properties: "x"
                }
            }
            Repeater {
                model: 3
                Loader {
                    property int value: index
                    sourceComponent: positionerDelegate
                }
            }
        }

        Text {
            text: "Grid"
            anchors.horizontalCenter: parent.horizontalCenter
        }

        Grid {
            layoutDirection: root.direction
            spacing: 10; columns: 3
            move: Transition {
                NumberAnimation {
                    properties: "x"
                }
            }
            Repeater {
                model: 8
                Loader {
                    property int value: index
                    sourceComponent: positionerDelegate
                }
            }
        }

        Text {
            text: "Flow"
            anchors.horizontalCenter: parent.horizontalCenter
        }

        Flow {
            layoutDirection: root.direction
            spacing: 10; width: parent.width
            move: Transition {
                NumberAnimation {
                    properties: "x"
                }
            }
            Repeater {
                model: 8
                Loader {
                    property int value: index
                    sourceComponent: positionerDelegate
                }
            }
        }
    }
    Column {
        id: columnB
        spacing: 10
        x: 160
        y: 10

        Text {
            text: "ListView"
            anchors.horizontalCenter: parent.horizontalCenter
        }

        ListView {
            id: listView
            clip: true
            width: parent.width; height: 40
            layoutDirection: root.direction
            orientation: Qt.Horizontal
            model: 48
            delegate: viewDelegate
        }

        Text {
            text: "GridView"
            anchors.horizontalCenter: parent.horizontalCenter
        }

        GridView {
            clip: true
            width: 150; height: 160
            cellWidth: 50; cellHeight: 50
            layoutDirection: root.direction
            model: 48
            delegate: viewDelegate
        }

        Rectangle {
            height: 50; width: parent.width
            color: mouseArea.pressed ? "black" : "gray"
            Column {
                anchors.centerIn: parent
                Text {
                    text: root.direction ? "Right to left" : "Left to right"
                    color: "white"
                    font.pixelSize: 16
                    anchors.horizontalCenter: parent.horizontalCenter
                }
                Text {
                    text: "(click here to toggle)"
                    color: "white"
                    font.pixelSize: 10
                    font.italic: true
                    anchors.horizontalCenter: parent.horizontalCenter
                }
            }
            MouseArea {
                id: mouseArea
                anchors.fill: parent
                onClicked: {
                    if (root.direction == Qt.LeftToRight) {
                        root.direction = Qt.RightToLeft;
                    } else {
                        root.direction = Qt.LeftToRight;
                    }
                }
            }
        }

        Rectangle {
            height: 50; width: parent.width
            color: mouseArea2.pressed ? "black" : "gray"
            Column {
                anchors.centerIn: parent
                Text {
                    text: root.mirror ? "Mirrored" : "Not mirrored"
                    color: "white"
                    font.pixelSize: 16
                    anchors.horizontalCenter: parent.horizontalCenter
                }
                Text {
                    text: "(click here to toggle)"
                    color: "white"
                    font.pixelSize: 10
                    font.italic: true
                    anchors.horizontalCenter: parent.horizontalCenter
                }
            }
            MouseArea {
                id: mouseArea2
                anchors.fill: parent
                onClicked: {
                    root.mirror = !root.mirror;
                }
            }
        }
    }

    Component {
        id: positionerDelegate
        Rectangle {
            width: 40; height: 40
            color: Qt.rgba(0.8/(parent.value+1),0.8/(parent.value+1),0.8/(parent.value+1),1.0)
            Text {
                text: parent.parent.value+1
                color: "white"
                font.pixelSize: 18
                anchors.centerIn: parent
            }
        }
    }
    Component {
        id: viewDelegate
        Item {
            width: (listView.effectiveLayoutDirection == Qt.LeftToRight  ? (index == 48 - 1) : (index == 0)) ? 40 : 50
            Rectangle {
                width: 40; height: 40
                color: Qt.rgba(0.5+(48 - index)*Math.random()/48,
                               0.3+index*Math.random()/48,
                               0.3*Math.random(),
                               1.0)
                Text {
                    text: index+1
                    color: "white"
                    font.pixelSize: 18
                    anchors.centerIn: parent
                }
            }
        }
    }
}