Help me to make an Animation :-(

[x3ex]

I want to animate ui when the view will be changed...
Here is my code -->

@import QtQuick 2.2
import QtQuick.Controls 1.1

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

Loader {
    id: pageLoader
    anchors.centerIn: parent
}

MouseArea {
    anchors.fill: parent
    onClicked: {
        if(pageLoader.source == "") {
            pageLoader.source = "Page1.qml"
        } else {
            pageLoader.source = ""
        }
    }
}

menuBar: MenuBar {
    Menu {
        title: qsTr("File")
        MenuItem {
            text: qsTr("Exit")
            onTriggered: Qt.quit();
        }
    }
}

}@

I want something like when the Page1.qml will come, It'll come from left side with a "Linear" animation... How can I do that ?