app/qml/components/SmoothItemDelegate.qml

import QtQuick 2.0
import QtQuick.Controls 2.2

ItemDelegate {
    id: control
    text: ""
    font.pixelSize: options_stack.text_pixelSize
    property color textColor: appTheme.style.textColor

    contentItem: Text {
        visible: false
    }

    Text {

        anchors {
            verticalCenter: parent.verticalCenter
            left: parent.left
            leftMargin: control.width * 0.02
        }

        text: control.text
        color: appTheme.style.textColor

        fontSizeMode: Text.Fit

        font.pixelSize: control.height * 0.4
    }

    width: parent.width

    background: Rectangle {
        opacity: enabled ? 1 : 0.3
        color: control.down ? appTheme.style.delegatePressedColor : appTheme.style.delegateBackgroundColor

        radius: height * 0.3

        Behavior on color {
            ColorAnimation {
                duration: 200
            }
        }
    }
}