Fix libcamera id reference scope issues in CameraSource and SettingsMenu

qml/Application.qml

@@ -80,6 +80,7 @@ ApplicationWindow {
         height: parent.height
         width: parent.width
         collageMenu.printer : printer
+        libcamera: libcamera
 
         settingsMenu.switchPrinter.onCheckedChanged:
         {

qml/ApplicationFlowForm.ui.qml

@@ -11,6 +11,7 @@ Item {
     property alias collageMenu: collageMenu
     property alias galleryMenu: galleryMenu
     property alias settingsMenu: settingsMenu
+    property var libcamera
 
     property real slideValueCollageSelection: 0.0
     property real slideValueSnapshotMenu: 1.0
@@ -36,6 +37,7 @@ Item {
         width: root.width
         height: root.height
         state: "deactivated"
+        libcamera: root.libcamera
     }
 
     ImagePreview {
@@ -73,6 +75,7 @@ Item {
         z: 0
         width: root.width
         height: root.height
+        libcamera: root.libcamera
     }
 
     states: [

qml/SettingsMenu.qml

@@ -33,11 +33,13 @@ SettingsMenuForm {
         {
             listModel.push(gphotoCameras[i])
         }
-        var libcameras = libcamera.availableCameras();
-        console.log("Libcamera Camera Count: " + Number(libcameras.length).toString())
-        for(i = 0; i < libcameras.length; i++)
-        {
-            listModel.push(libcameras[i])
+        if (form.libcamera) {
+            var libcameras = form.libcamera.availableCameras();
+            console.log("Libcamera Camera Count: " + Number(libcameras.length).toString())
+            for(i = 0; i < libcameras.length; i++)
+            {
+                listModel.push(libcameras[i])
+            }
         }
         return listModel;
     }

qml/SettingsMenuForm.ui.qml

@@ -30,6 +30,7 @@ Item {
     property alias comboBoxCameraOrientation: comboBoxCameraOrientation
     property alias comboBoxNeuralNetworkRuntime: comboBoxNeuralNetworkRuntime
     property alias buttonSelectPhotoDirectory: buttonSelectPhotoDirectory
+    property var libcamera
 
     ColumnLayout {
         anchors.fill: parent

qml/SnapshotMenuForm.ui.qml

@@ -14,10 +14,12 @@ Item {
     property alias shutterButton: shutterButton
     property alias countdown: shutterButton.countDownTime
     property bool hideSnapshotSettingsPane: false
+    property var libcamera
 
     CameraRenderer {
         id: cameraRenderer
         anchors.fill: parent
+        libcamera: element.libcamera
 
         Text {
             id: failureText

qml/content/CameraRenderer.qml

@@ -18,6 +18,7 @@ Item {
    property alias backgroundFilter: backgroundFilter
    property bool backgroundFilterEnabled: false
    property url backgroundImage: ""
+   property var libcamera
 
    onCameraNameChanged:
    {
@@ -54,6 +55,7 @@ Item {
       anchors.fill: parent
 
       cameraName: renderer.cameraName
+      libcamera: renderer.libcamera
 
       onImageCaptured: function(image) {
          whiteOverlay.state = "released"

qml/content/CameraSource.qml

@@ -12,6 +12,7 @@ Item
    property alias output: output
    property string cameraName: ""
    property bool readyForCapture: ((cameraSession.imageCapture.readyForCapture) || (cameraSource.state === "GPhotoCamera") || (cameraSource.state === "Libcamera"))
+   property var libcamera
 
    signal imageCaptured(var image)
    signal errorOccurred(var errorString)
@@ -37,12 +38,14 @@ Item
             return
          }
       }
-      var libcameras = libcamera.availableCameras()
-      for (var j = 0; j < libcameras.length; j++) {
-         if (libcameras[j] === cameraName) {
-            cameraSource.state = "Libcamera"
-            console.log("CameraSource using Libcamera camera device: " + cameraName)
-            return
+      if (cameraSource.libcamera) {
+         var libcameras = cameraSource.libcamera.availableCameras()
+         for (var j = 0; j < libcameras.length; j++) {
+            if (libcameras[j] === cameraName) {
+               cameraSource.state = "Libcamera"
+               console.log("CameraSource using Libcamera camera device: " + cameraName)
+               return
+            }
          }
       }
 
@@ -62,7 +65,9 @@ Item
       }
       else if(state === "Libcamera")
       {
-         libcamera.startCamera(cameraName)
+         if (cameraSource.libcamera) {
+            cameraSource.libcamera.startCamera(cameraName)
+         }
       }
       else
       {
@@ -82,7 +87,9 @@ Item
       }
       else if(state === "Libcamera")
       {
-         libcamera.stopCamera()
+         if (cameraSource.libcamera) {
+            cameraSource.libcamera.stopCamera()
+         }
       }
       else
       {
@@ -100,7 +107,9 @@ Item
       else if(state === "Libcamera")
       {
          console.log("Libcamera capture")
-         libcamera.captureImage()
+         if (cameraSource.libcamera) {
+            cameraSource.libcamera.captureImage()
+         }
       }
       else if(state === "GPhotoCamera")
       {
@@ -118,7 +127,7 @@ Item
    }
 
    Connections {
-      target: libcamera
+      target: cameraSource.libcamera
       function onErrorOccurred(errorString) {
          if(state === "Libcamera")
          {
@@ -129,7 +138,7 @@ Item
 
    Connections
    {
-      target: libcamera
+      target: cameraSource.libcamera
       function onImageCaptured(image) {
             cameraSource.imageCaptured(image)
          }
@@ -262,7 +271,7 @@ Item
          name: "Libcamera"
          PropertyChanges {
             target: cameraSession
-            videoFrameInput: libcamera
+            videoFrameInput: cameraSource.libcamera
          }
       },
       State {