Button.qml Example File

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 import QtQuick 1.0

 Rectangle {
     id: button

     property alias source: image.source
     property alias mouseAreaScale: mouseArea.scale

     signal clicked

     width: 50; height: 50
     color: "transparent"

     Behavior on scale { NumberAnimation { duration: 50 } }

     Image {
         id: image

         anchors.fill: parent
         smooth: true
     }

     MouseArea {
         id: mouseArea

         anchors.fill: parent
         onClicked: { button.clicked() }
         onEntered: { button.scale = 0.9 }
         onExited: { button.scale = 1.0 }
     }
 }