Originally Posted by coderus

Solution:

Code:

import QtQuick 2.0
import Sailfish.Silica 1.0

Page {
    id: page

    MouseArea {
        id: dragArea
        width: 270
        height: 270

        Connections {
            target: dragArea.parent
            onHeightChanged: {
                var xx = dragArea.x
                var yy = dragArea.y
                if (dragArea.parent.width > dragArea.parent.height) {
                    dragArea.x = yy
                    dragArea.y = dragArea.parent.height - dragArea.height - xx
                } else {
                    dragArea.x = dragArea.parent.width - dragArea.width - yy
                    dragArea.y = xx
                }
            }
        }

        Rectangle {
            anchors.fill: parent
            color: "red"
        }

        drag.target: dragArea
        drag.minimumX: 0
        drag.minimumY: 0
        drag.maximumY: parent.height - height
        drag.maximumX: parent.width - width
    }
}