- Qt 5.5
- Qt Quick
- Qt Quick Examples - Right to Left
- layoutdirection.qml Example File
- Qt 5.5.1 Reference Documentation

# layoutdirection.qml Example File

righttoleft/layoutdirection/layoutdirection.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
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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
                    }
                }
            }
        }
    }