CustomButton.qml

import QtQuick 2.11
import QtQuick.Controls 2.4
import QtQuick.Controls.impl 2.4
import QtQuick.Templates 2.4 as T

T.Button {
    id: control

    property string iconFamily
    property string iconName
    property int iconSize
    property int textSize
    property string iconMargin
    property string btnTxt
    property string mTextMargin
    property string mTextSize
    property string qColor
    property string qTextColor

    leftPadding: padding + 2
    rightPadding: padding + 2
    implicitWidth: mContentItem.width + leftPadding + rightPadding
    implicitHeight: mContentItem.height + topPadding + bottomPadding

    Rectangle {
        id: mParent
        anchors.fill: parent
        clip: true
        color: control.enabled ? qColor : "#9E9E9E"
        opacity: control.enabled ? 1 : 0.5

        Rectangle {
            id: mContentItem
            anchors.centerIn: parent
            width: mText.width + mIcon.width + 20
            height: mText.height + 20
            color: qColor
            clip: true

            Text {
                id: mText
                anchors.right: mIcon.left
                anchors.rightMargin: 5
                anchors.verticalCenter: parent.verticalCenter
                font.pixelSize: textSize ? textSize : 15
                color: qTextColor ? qTextColor : "white"
                text: btnTxt
                clip: true
            }

            Text {
                id: mIcon
                font.family: iconFamily
                text: iconName
                anchors.right: parent.right
                anchors.rightMargin: iconMargin ? iconMargin : 10
                anchors.verticalCenter: parent.verticalCenter
                font.pixelSize: iconSize ? iconSize : 18
                color: qTextColor ? qTextColor : "white"
            }
        }
    }
}