QtQuickColouringBook/qml/ColouringBook/Button.qml

import QtQuick 1.0

Image {
    id: button

    property string sourceImage

    signal clicked

    width: 60
    height: 60

    source: mouseArea.pressed ? "gfx/"+sourceImage+"_down.png" : "gfx/"+sourceImage+"_up.png"

    MouseArea {
        id: mouseArea
        anchors.fill: parent
        onClicked: button.clicked()
    }
}