Hi all.
Reading the documentation for mapToItem/mapFromItem functions I've
understand that it is possibile to translate a point to/from the coordinate
system of the item itself. In particular, given the signature:
<itemName>.mapToItem(null, 0, 0)
it is possibile to map the coordinate system origin of the item to the
coordinate system of the top level window.
This seems to work, as long as I don't use a Window, i.e. the
following example gives different results (or correct ones which I
cannot understand?):
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: {
var coords = rec1.mapToItem(null, 0, 0)
console.log("rec1: " + coords.x + "," + coords.y)
}
}
Rectangle {
id: rec2
anchors.centerIn: parent
width: 200
height: 200
color: "blue"
opacity: 0.5
Component.onCompleted: {
var coords = rec2.mapToItem(null, 0, 0)
console.log("rec2: " + coords.x + "," + coords.y)
}
}
}
The resulting coordinates are:
qml: rec2: -100,-100
qml: rec1: 200,200
whereas I expected both rectangles to be at (200, 200). Window is not
an Item, I know. Is this behaviour correct and I'm missing something
trivial? Can the coordinates be traslated as expected?
Thanks in advance,
F.
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