QML Signal for Orientation Change Complete - qt

Question

I am working on an ESRI AppStudio app (AppStudio 3.1, Qt 5.11) for iPad and need to do some resizing of a QML control when the orientation changes. I found this page which seems to describe the official way to do this: https://wiki.qt.io/QML_orientation_observer
import QtQuick.Window 2.2
Rectangle {
property bool isPortrait: Screen.primaryOrientation === Qt.PortraitOrientation || Screen.primaryOrientation === Qt.InvertedPortraitOrientation
onIsPortraitChanged: console.log("isPortrait", isPortrait)
}
However, I have found the statement on that page that the binding will be fired after the height and width changes are completed to be incorrect. What I saw when I implemented this is that onIsPortraitChanged does indeed fire when the orientation changes but it does so before the orientation change animation completes and before the width of the app is resized. Is there a way I can trigger my code after the width is finished changing?

Answer 1

Here's a solution that I found but it will only work for devices where the app is full screen and there might be a cleaner way to do this.
import QtQuick.Window 2.2
Window {
id: app
visible: true
width: 640
height: 480
Rectangle {
anchors.fill: parent
onWidthChanged: {
if(app.width === Screen.width || app.width === Screen.height) {
//calculate new size
}
}
}
}

Answer 2

I have no problem getting new width with correct signal for orientationchanged
import QtQuick.Window 2.12
Window {
id: app
visible: true
width: 640
height: 480
Screen.orientationUpdateMask: Qt.LandscapeOrientation | Qt.PortraitOrientation
...
...
Connections{
target: my_object
Screen.onPrimaryOrientationChanged:{
console.log("orinetation changed, width: " + width )
}
}
}