Board.qml Example File

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import QtQuick 2.0
import QtQuick.Window 2.1

Rectangle {
    id: board
    width: 600
    height: 300

    // 1 - server role; left pedal
    // 2 - client role; right pedal
    property int roleSide: pingPong.role
    onRoleSideChanged: {
        if (pingPong.role == 1) {
            rightMouse.opacity = 0.7
            rightMouse.enabled = false
        }
        else if (pingPong.role == 2) {
            leftMouse.opacity = 0.7
            leftMouse.enabled = false
        }
    }

    property bool deviceMessage: pingPong.showDialog
    onDeviceMessageChanged: {
        if (pingPong.showDialog) {
            info.visible = true;
            board.opacity = 0.5;
        } else {
            info.visible = false;
            board.opacity = 1;
        }
    }

    // Left pedal - server role
    Rectangle {
        id: leftblock
        y: (parent.height/2)
        width: (parent.width/27)
        height: (parent.height/5)
        anchors.left: parent.left
        color: "#363636"
        radius: 10

        MouseArea {
            id: leftMouse
            anchors.fill: parent
            acceptedButtons: Qt.LeftButton
            drag.target: leftblock
            drag.axis: Drag.YAxis
            drag.minimumY: 0
            drag.maximumY: (board.height - leftblock.height)
        }
    }

    // Right pedal - client role
    Rectangle {
        id: rightblock
        y: (parent.height/2)
        width: (parent.width/27)
        height: (parent.height/5)
        anchors.right: parent.right
        color: "#363636"
        radius: 10

        MouseArea {
            id: rightMouse
            anchors.fill: parent
            acceptedButtons: Qt.LeftButton
            drag.target: rightblock
            drag.axis: Drag.YAxis
            drag.minimumY: 0
            drag.maximumY: (board.height - rightblock.height)
        }
    }

    property double leftBlockY: leftblock.y
    onLeftBlockYChanged: pingPong.updateLeftBlock(leftblock.y)

    property double leftBlockUpdate: pingPong.leftBlockY
    onLeftBlockUpdateChanged: leftblock.y = pingPong.leftBlockY

    property double rightBlockY: rightblock.y
    onRightBlockYChanged: pingPong.updateRightBlock(rightblock.y)

    property double rightBlockUpdate: pingPong.rightBlockY
    onRightBlockUpdateChanged: rightblock.y = pingPong.rightBlockY

    Rectangle {
        id: splitter
        color: "#363636"
        anchors.horizontalCenter: parent.horizontalCenter
        height: parent.height
        width: parent.width/100
    }

    Text {
        id: leftResult
        text: pingPong.leftResult
        font.bold: true
        font.pixelSize: 30
        anchors.right: splitter.left
        anchors.top: parent.top
        anchors.margins: 15
    }

    Text {
        id: rightResult
        text: pingPong.rightResult
        font.bold: true
        font.pixelSize: 30
        anchors.left: splitter.right
        anchors.top: parent.top
        anchors.margins: 15
    }

    Rectangle {
        id: ball
        width: leftblock.width/2
        height: leftblock.width/2
        radius: width
        color: "#363636"
        x: pingPong.ballX
        y: pingPong.ballY

        SequentialAnimation {
            running: true
            NumberAnimation { target: ball; property: "x"; duration: 50 }
            NumberAnimation { target: ball; property: "y"; duration: 50 }
        }
    }

    Component.onCompleted: {
        if (menulist.height == Screen.height && menulist.width == Screen.width)
            pingPong.setSize(Screen.width, Screen.height)
        else
            pingPong.setSize(board.width, board.height)
        pingPong.updateLeftBlock(leftblock.y)
        pingPong.updateRightBlock(rightblock.y)
    }
}