Button.qml Example File

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 import QtQuick 2.0

 Rectangle {
     id: root
     color: textColor
     radius: 0.25 * height

     property string text
     property color bgColor: "white"
     property color bgColorSelected: "red"
     property color textColor: "black"
     property alias enabled: mouseArea.enabled

     signal clicked

     Rectangle {
         anchors { fill: parent; margins: 1 }
         color: mouseArea.pressed ? bgColorSelected : bgColor
         radius: 0.25 * height

         Text {
             id: text
             anchors.centerIn: parent
             text: root.text
             font.pixelSize: 0.5 * parent.height
             color: mouseArea.pressed ? bgColor : textColor
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
         }

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