selectscreen: open in same screen as app

This fixes the screen used by selectscreencreation to set the window position.

Change-Id: I805027ee84cd439e9801496025e0cae070153a32
GitLab: #656

src/mainview/components/CallOverlay.qml

@@ -160,7 +160,7 @@ Item {
         if (Qt.application.screens.length === 1) {
             AvAdapter.shareEntireScreen(0)
         } else {
-            SelectScreenWindowCreation.createSelectScreenWindowObject()
+            SelectScreenWindowCreation.createSelectScreenWindowObject(JamiQmlUtils.mainApplicationScreen)
             SelectScreenWindowCreation.showSelectScreenWindow(callPreviewId, false)
         }
     }
@@ -169,7 +169,7 @@ Item {
         AvAdapter.muteCamera = !sharingActive && root.isVideoMuted
         AvAdapter.getListWindows()
         if (AvAdapter.windowsNames.length >= 1) {
-            SelectScreenWindowCreation.createSelectScreenWindowObject()
+            SelectScreenWindowCreation.createSelectScreenWindowObject(JamiQmlUtils.mainApplicationScreen)
             SelectScreenWindowCreation.showSelectScreenWindow(callPreviewId, true)
         }
     }

src/mainview/components/SelectScreen.qml

@@ -78,8 +78,6 @@ Window {
     width: minWidth
     height: minHeight
 
-    screen: JamiQmlUtils.mainApplicationScreen
-
     Rectangle {
         id: selectScreenWindowRect
 

src/mainview/js/selectscreenwindowcreation.js

@@ -20,11 +20,12 @@
 var selectScreenWindowComponent
 var selectScreenWindowObject
 
-function createSelectScreenWindowObject() {
+function createSelectScreenWindowObject(providedScreen) {
     if (selectScreenWindowObject)
         return
     selectScreenWindowComponent = Qt.createComponent(
                 "../components/SelectScreen.qml")
+    selectScreenWindowComponent.screen = providedScreen
     if (selectScreenWindowComponent.status === Component.Ready)
         finishCreation()
     else if (selectScreenWindowComponent.status === Component.Error)
@@ -44,12 +45,11 @@ function finishCreation() {
 }
 
 function showSelectScreenWindow(previewId, window) {
-    console.log("previewId", previewId)
     selectScreenWindowObject.currentPreview = previewId
     selectScreenWindowObject.window = window
     selectScreenWindowObject.show()
 
-    var screen = selectScreenWindowObject.screen
+    var screen = selectScreenWindowComponent.screen
     selectScreenWindowObject.x = screen.virtualX +
             (screen.width - selectScreenWindowObject.width) / 2
     selectScreenWindowObject.y = screen.virtualY +