Wrong coordinates white getting real position of item relative to its parent

Question

I have simple scene with only 2 Rectangles. The difference is that first one uses absolute coordinates and second one uses anchors. In this case bo

Answer 1

Both rectangles have same coordinates but on different time:

import QtQuick 2.4
import QtQuick.Window 2.2

Window {
    visible: true
    width: 600
    height: 600
    Rectangle {
        id: rec1
        x: 200
        y: 200
        width: 200
        height: 200
        color: "green"
        opacity: 0.5
        Component.onCompleted: console.log("rec1: " + rec1.x + "," + rec1.y);
    }

    Rectangle {
        id: rec2
        anchors.centerIn: parent
        width: 200
        height: 200
        color: "blue"
        opacity: 0.5
        Component.onCompleted: console.log("rec2: " + rec2.x + "," + rec2.y);
        onXChanged: console.log("rec2.x: " + rec2.x);
        onYChanged: console.log("rec2.y: " + rec2.y);
    }
}