- Qt 5.5
- Qt Quick
- Qt Quick Examples - MouseArea
- mousearea.qml Example File
- Qt 5.5.1 Reference Documentation

# mousearea.qml Example File

mousearea/mousearea.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
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    import QtQuick 2.4

    Rectangle {
        id: box
        width: 320; height: 480

        Rectangle {
            id: redSquare
            width: 120; height: 120
            anchors.top: parent.top; anchors.left: parent.left; anchors.margins: 10
            color: "red"
            opacity: redSquareMouseArea.containsPress ? 0.6 : 1.0

            Text { text: "Click"; font.pixelSize: 16; anchors.centerIn: parent }

            MouseArea {
                id: redSquareMouseArea
                anchors.fill: parent
                hoverEnabled: true
                property string buttonID

                acceptedButtons: Qt.AllButtons
                // Value 'All.Buttons' is eqivalent to:
                // 'Qt::LeftButton | Qt::RightButton | Qt::MiddleButton  .... | Qt::ExtraButton24'

                onEntered: info.text = 'Entered'
                onExited: info.text = 'Exited (pressed=' + pressed + ')'

                onPressed: {
                    if (mouse.button == Qt.LeftButton)
                        buttonID = 'LeftButton'
                    else if (mouse.button == Qt.RightButton)
                        buttonID = 'RightButton'
                    else if (mouse.button == Qt.MidButton)
                        buttonID = 'MiddleButton'
                    else if (mouse.button == Qt.BackButton)
                        buttonID = 'BackButton'
                    else if (mouse.button == Qt.ForwardButton)
                        buttonID = 'ForwardButton'
                    else if (mouse.button == Qt.TaskButton)
                        buttonID = 'TaskButton'
                    else if (mouse.button == Qt.ExtraButton4)
                        buttonID = 'ExtraButton4'
                    else if (mouse.button == Qt.ExtraButton5)
                        buttonID = 'ExtraButton5'
                    else if (mouse.button == Qt.ExtraButton6)
                        buttonID = 'ExtraButton6'
                    else if (mouse.button == Qt.ExtraButton7)
                        buttonID = 'ExtraButton7'
                    else if (mouse.button == Qt.ExtraButton8)
                        buttonID = 'ExtraButton8'
                    else if (mouse.button == Qt.ExtraButton9)
                        buttonID = 'ExtraButton9'
                    else if (mouse.button == Qt.ExtraButton10)
                        buttonID = 'ExtraButton10'
                    else if (mouse.button == Qt.ExtraButton11)
                        buttonID = 'ExtraButton11'
                    else if (mouse.button == Qt.ExtraButton12)
                        buttonID = 'ExtraButton12'
                    else if (mouse.button == Qt.ExtraButton13)
                        buttonID = 'ExtraButton13'
                    else if (mouse.button == Qt.ExtraButton14)
                        buttonID = 'ExtraButton14'
                    else if (mouse.button == Qt.ExtraButton15)
                        buttonID = 'ExtraButton15'
                    else if (mouse.button == Qt.ExtraButton16)
                        buttonID = 'ExtraButton16'
                    else if (mouse.button == Qt.ExtraButton17)
                        buttonID = 'ExtraButton17'
                    else if (mouse.button == Qt.ExtraButton18)
                        buttonID = 'ExtraButton18'
                    else if (mouse.button == Qt.ExtraButton19)
                        buttonID = 'ExtraButton19'
                    else if (mouse.button == Qt.ExtraButton20)
                        buttonID = 'ExtraButton20'
                    else if (mouse.button == Qt.ExtraButton21)
                        buttonID = 'ExtraButton21'
                    else if (mouse.button == Qt.ExtraButton22)
                        buttonID = 'ExtraButton22'
                    else if (mouse.button == Qt.ExtraButton23)
                        buttonID = 'ExtraButton23'
                    else if (mouse.button == Qt.ExtraButton24)
                        buttonID = 'ExtraButton24'

                    info.text = 'Pressed (' + buttonID + ' shift='
                        + (mouse.modifiers & Qt.ShiftModifier ? 'true' : 'false') + ')'
                    var posInBox = redSquare.mapToItem(box, mouse.x, mouse.y)
                    posInfo.text = + mouse.x + ',' + mouse.y + ' in square'
                            + ' (' + posInBox.x + ',' + posInBox.y + ' in window)'
                }

                onReleased: {
                    btn.text = 'Released (isClick=' + mouse.isClick + ' wasHeld=' + mouse.wasHeld + ')'
                    posInfo.text = ''
                }

                onPressAndHold: btn.text = 'Press and hold'
                onClicked: btn.text = 'Clicked (wasHeld=' + mouse.wasHeld + ')'
                onDoubleClicked: btn.text = 'Double clicked'
            }
        }

        Rectangle {
            id: blueSquare
            width: 120; height: 120
            x: box.width - width - 10; y: 10    // making this item draggable, so don't use anchors
            color: "blue"

            Text { text: "Drag"; font.pixelSize: 16; color: "white"; anchors.centerIn: parent }

            MouseArea {
                anchors.fill: parent
                drag.target: blueSquare
                drag.axis: Drag.XAndYAxis
                drag.minimumX: 0
                drag.maximumX: box.width - parent.width
                drag.minimumY: 0
                drag.maximumY: box.height - parent.width
            }
        }

        Text {
            id: info
            anchors.bottom: btn.top; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 20

            onTextChanged: console.log(text)
        }

        Text {
            id: btn
            anchors.bottom: posInfo.top; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 20
        }

        Text {
            id: posInfo
            anchors.bottom: parent.bottom; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 20
        }
    }